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3f518509 MW |
1 | /* |
2 | * Driver for Marvell PPv2 network controller for Armada 375 SoC. | |
3 | * | |
4 | * Copyright (C) 2014 Marvell | |
5 | * | |
6 | * Marcin Wojtas <mw@semihalf.com> | |
7 | * | |
8 | * This file is licensed under the terms of the GNU General Public | |
9 | * License version 2. This program is licensed "as is" without any | |
10 | * warranty of any kind, whether express or implied. | |
11 | */ | |
12 | ||
13 | #include <linux/kernel.h> | |
14 | #include <linux/netdevice.h> | |
15 | #include <linux/etherdevice.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/skbuff.h> | |
18 | #include <linux/inetdevice.h> | |
19 | #include <linux/mbus.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/interrupt.h> | |
22 | #include <linux/cpumask.h> | |
23 | #include <linux/of.h> | |
24 | #include <linux/of_irq.h> | |
25 | #include <linux/of_mdio.h> | |
26 | #include <linux/of_net.h> | |
27 | #include <linux/of_address.h> | |
28 | #include <linux/phy.h> | |
29 | #include <linux/clk.h> | |
edc660fa MW |
30 | #include <linux/hrtimer.h> |
31 | #include <linux/ktime.h> | |
3f518509 MW |
32 | #include <uapi/linux/ppp_defs.h> |
33 | #include <net/ip.h> | |
34 | #include <net/ipv6.h> | |
35 | ||
36 | /* RX Fifo Registers */ | |
37 | #define MVPP2_RX_DATA_FIFO_SIZE_REG(port) (0x00 + 4 * (port)) | |
38 | #define MVPP2_RX_ATTR_FIFO_SIZE_REG(port) (0x20 + 4 * (port)) | |
39 | #define MVPP2_RX_MIN_PKT_SIZE_REG 0x60 | |
40 | #define MVPP2_RX_FIFO_INIT_REG 0x64 | |
41 | ||
42 | /* RX DMA Top Registers */ | |
43 | #define MVPP2_RX_CTRL_REG(port) (0x140 + 4 * (port)) | |
44 | #define MVPP2_RX_LOW_LATENCY_PKT_SIZE(s) (((s) & 0xfff) << 16) | |
45 | #define MVPP2_RX_USE_PSEUDO_FOR_CSUM_MASK BIT(31) | |
46 | #define MVPP2_POOL_BUF_SIZE_REG(pool) (0x180 + 4 * (pool)) | |
47 | #define MVPP2_POOL_BUF_SIZE_OFFSET 5 | |
48 | #define MVPP2_RXQ_CONFIG_REG(rxq) (0x800 + 4 * (rxq)) | |
49 | #define MVPP2_SNOOP_PKT_SIZE_MASK 0x1ff | |
50 | #define MVPP2_SNOOP_BUF_HDR_MASK BIT(9) | |
51 | #define MVPP2_RXQ_POOL_SHORT_OFFS 20 | |
52 | #define MVPP2_RXQ_POOL_SHORT_MASK 0x700000 | |
53 | #define MVPP2_RXQ_POOL_LONG_OFFS 24 | |
54 | #define MVPP2_RXQ_POOL_LONG_MASK 0x7000000 | |
55 | #define MVPP2_RXQ_PACKET_OFFSET_OFFS 28 | |
56 | #define MVPP2_RXQ_PACKET_OFFSET_MASK 0x70000000 | |
57 | #define MVPP2_RXQ_DISABLE_MASK BIT(31) | |
58 | ||
59 | /* Parser Registers */ | |
60 | #define MVPP2_PRS_INIT_LOOKUP_REG 0x1000 | |
61 | #define MVPP2_PRS_PORT_LU_MAX 0xf | |
62 | #define MVPP2_PRS_PORT_LU_MASK(port) (0xff << ((port) * 4)) | |
63 | #define MVPP2_PRS_PORT_LU_VAL(port, val) ((val) << ((port) * 4)) | |
64 | #define MVPP2_PRS_INIT_OFFS_REG(port) (0x1004 + ((port) & 4)) | |
65 | #define MVPP2_PRS_INIT_OFF_MASK(port) (0x3f << (((port) % 4) * 8)) | |
66 | #define MVPP2_PRS_INIT_OFF_VAL(port, val) ((val) << (((port) % 4) * 8)) | |
67 | #define MVPP2_PRS_MAX_LOOP_REG(port) (0x100c + ((port) & 4)) | |
68 | #define MVPP2_PRS_MAX_LOOP_MASK(port) (0xff << (((port) % 4) * 8)) | |
69 | #define MVPP2_PRS_MAX_LOOP_VAL(port, val) ((val) << (((port) % 4) * 8)) | |
70 | #define MVPP2_PRS_TCAM_IDX_REG 0x1100 | |
71 | #define MVPP2_PRS_TCAM_DATA_REG(idx) (0x1104 + (idx) * 4) | |
72 | #define MVPP2_PRS_TCAM_INV_MASK BIT(31) | |
73 | #define MVPP2_PRS_SRAM_IDX_REG 0x1200 | |
74 | #define MVPP2_PRS_SRAM_DATA_REG(idx) (0x1204 + (idx) * 4) | |
75 | #define MVPP2_PRS_TCAM_CTRL_REG 0x1230 | |
76 | #define MVPP2_PRS_TCAM_EN_MASK BIT(0) | |
77 | ||
78 | /* Classifier Registers */ | |
79 | #define MVPP2_CLS_MODE_REG 0x1800 | |
80 | #define MVPP2_CLS_MODE_ACTIVE_MASK BIT(0) | |
81 | #define MVPP2_CLS_PORT_WAY_REG 0x1810 | |
82 | #define MVPP2_CLS_PORT_WAY_MASK(port) (1 << (port)) | |
83 | #define MVPP2_CLS_LKP_INDEX_REG 0x1814 | |
84 | #define MVPP2_CLS_LKP_INDEX_WAY_OFFS 6 | |
85 | #define MVPP2_CLS_LKP_TBL_REG 0x1818 | |
86 | #define MVPP2_CLS_LKP_TBL_RXQ_MASK 0xff | |
87 | #define MVPP2_CLS_LKP_TBL_LOOKUP_EN_MASK BIT(25) | |
88 | #define MVPP2_CLS_FLOW_INDEX_REG 0x1820 | |
89 | #define MVPP2_CLS_FLOW_TBL0_REG 0x1824 | |
90 | #define MVPP2_CLS_FLOW_TBL1_REG 0x1828 | |
91 | #define MVPP2_CLS_FLOW_TBL2_REG 0x182c | |
92 | #define MVPP2_CLS_OVERSIZE_RXQ_LOW_REG(port) (0x1980 + ((port) * 4)) | |
93 | #define MVPP2_CLS_OVERSIZE_RXQ_LOW_BITS 3 | |
94 | #define MVPP2_CLS_OVERSIZE_RXQ_LOW_MASK 0x7 | |
95 | #define MVPP2_CLS_SWFWD_P2HQ_REG(port) (0x19b0 + ((port) * 4)) | |
96 | #define MVPP2_CLS_SWFWD_PCTRL_REG 0x19d0 | |
97 | #define MVPP2_CLS_SWFWD_PCTRL_MASK(port) (1 << (port)) | |
98 | ||
99 | /* Descriptor Manager Top Registers */ | |
100 | #define MVPP2_RXQ_NUM_REG 0x2040 | |
101 | #define MVPP2_RXQ_DESC_ADDR_REG 0x2044 | |
102 | #define MVPP2_RXQ_DESC_SIZE_REG 0x2048 | |
103 | #define MVPP2_RXQ_DESC_SIZE_MASK 0x3ff0 | |
104 | #define MVPP2_RXQ_STATUS_UPDATE_REG(rxq) (0x3000 + 4 * (rxq)) | |
105 | #define MVPP2_RXQ_NUM_PROCESSED_OFFSET 0 | |
106 | #define MVPP2_RXQ_NUM_NEW_OFFSET 16 | |
107 | #define MVPP2_RXQ_STATUS_REG(rxq) (0x3400 + 4 * (rxq)) | |
108 | #define MVPP2_RXQ_OCCUPIED_MASK 0x3fff | |
109 | #define MVPP2_RXQ_NON_OCCUPIED_OFFSET 16 | |
110 | #define MVPP2_RXQ_NON_OCCUPIED_MASK 0x3fff0000 | |
111 | #define MVPP2_RXQ_THRESH_REG 0x204c | |
112 | #define MVPP2_OCCUPIED_THRESH_OFFSET 0 | |
113 | #define MVPP2_OCCUPIED_THRESH_MASK 0x3fff | |
114 | #define MVPP2_RXQ_INDEX_REG 0x2050 | |
115 | #define MVPP2_TXQ_NUM_REG 0x2080 | |
116 | #define MVPP2_TXQ_DESC_ADDR_REG 0x2084 | |
117 | #define MVPP2_TXQ_DESC_SIZE_REG 0x2088 | |
118 | #define MVPP2_TXQ_DESC_SIZE_MASK 0x3ff0 | |
119 | #define MVPP2_AGGR_TXQ_UPDATE_REG 0x2090 | |
120 | #define MVPP2_TXQ_THRESH_REG 0x2094 | |
121 | #define MVPP2_TRANSMITTED_THRESH_OFFSET 16 | |
122 | #define MVPP2_TRANSMITTED_THRESH_MASK 0x3fff0000 | |
123 | #define MVPP2_TXQ_INDEX_REG 0x2098 | |
124 | #define MVPP2_TXQ_PREF_BUF_REG 0x209c | |
125 | #define MVPP2_PREF_BUF_PTR(desc) ((desc) & 0xfff) | |
126 | #define MVPP2_PREF_BUF_SIZE_4 (BIT(12) | BIT(13)) | |
127 | #define MVPP2_PREF_BUF_SIZE_16 (BIT(12) | BIT(14)) | |
128 | #define MVPP2_PREF_BUF_THRESH(val) ((val) << 17) | |
129 | #define MVPP2_TXQ_DRAIN_EN_MASK BIT(31) | |
130 | #define MVPP2_TXQ_PENDING_REG 0x20a0 | |
131 | #define MVPP2_TXQ_PENDING_MASK 0x3fff | |
132 | #define MVPP2_TXQ_INT_STATUS_REG 0x20a4 | |
133 | #define MVPP2_TXQ_SENT_REG(txq) (0x3c00 + 4 * (txq)) | |
134 | #define MVPP2_TRANSMITTED_COUNT_OFFSET 16 | |
135 | #define MVPP2_TRANSMITTED_COUNT_MASK 0x3fff0000 | |
136 | #define MVPP2_TXQ_RSVD_REQ_REG 0x20b0 | |
137 | #define MVPP2_TXQ_RSVD_REQ_Q_OFFSET 16 | |
138 | #define MVPP2_TXQ_RSVD_RSLT_REG 0x20b4 | |
139 | #define MVPP2_TXQ_RSVD_RSLT_MASK 0x3fff | |
140 | #define MVPP2_TXQ_RSVD_CLR_REG 0x20b8 | |
141 | #define MVPP2_TXQ_RSVD_CLR_OFFSET 16 | |
142 | #define MVPP2_AGGR_TXQ_DESC_ADDR_REG(cpu) (0x2100 + 4 * (cpu)) | |
143 | #define MVPP2_AGGR_TXQ_DESC_SIZE_REG(cpu) (0x2140 + 4 * (cpu)) | |
144 | #define MVPP2_AGGR_TXQ_DESC_SIZE_MASK 0x3ff0 | |
145 | #define MVPP2_AGGR_TXQ_STATUS_REG(cpu) (0x2180 + 4 * (cpu)) | |
146 | #define MVPP2_AGGR_TXQ_PENDING_MASK 0x3fff | |
147 | #define MVPP2_AGGR_TXQ_INDEX_REG(cpu) (0x21c0 + 4 * (cpu)) | |
148 | ||
149 | /* MBUS bridge registers */ | |
150 | #define MVPP2_WIN_BASE(w) (0x4000 + ((w) << 2)) | |
151 | #define MVPP2_WIN_SIZE(w) (0x4020 + ((w) << 2)) | |
152 | #define MVPP2_WIN_REMAP(w) (0x4040 + ((w) << 2)) | |
153 | #define MVPP2_BASE_ADDR_ENABLE 0x4060 | |
154 | ||
155 | /* Interrupt Cause and Mask registers */ | |
156 | #define MVPP2_ISR_RX_THRESHOLD_REG(rxq) (0x5200 + 4 * (rxq)) | |
157 | #define MVPP2_ISR_RXQ_GROUP_REG(rxq) (0x5400 + 4 * (rxq)) | |
158 | #define MVPP2_ISR_ENABLE_REG(port) (0x5420 + 4 * (port)) | |
159 | #define MVPP2_ISR_ENABLE_INTERRUPT(mask) ((mask) & 0xffff) | |
160 | #define MVPP2_ISR_DISABLE_INTERRUPT(mask) (((mask) << 16) & 0xffff0000) | |
161 | #define MVPP2_ISR_RX_TX_CAUSE_REG(port) (0x5480 + 4 * (port)) | |
162 | #define MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK 0xffff | |
163 | #define MVPP2_CAUSE_TXQ_OCCUP_DESC_ALL_MASK 0xff0000 | |
164 | #define MVPP2_CAUSE_RX_FIFO_OVERRUN_MASK BIT(24) | |
165 | #define MVPP2_CAUSE_FCS_ERR_MASK BIT(25) | |
166 | #define MVPP2_CAUSE_TX_FIFO_UNDERRUN_MASK BIT(26) | |
167 | #define MVPP2_CAUSE_TX_EXCEPTION_SUM_MASK BIT(29) | |
168 | #define MVPP2_CAUSE_RX_EXCEPTION_SUM_MASK BIT(30) | |
169 | #define MVPP2_CAUSE_MISC_SUM_MASK BIT(31) | |
170 | #define MVPP2_ISR_RX_TX_MASK_REG(port) (0x54a0 + 4 * (port)) | |
171 | #define MVPP2_ISR_PON_RX_TX_MASK_REG 0x54bc | |
172 | #define MVPP2_PON_CAUSE_RXQ_OCCUP_DESC_ALL_MASK 0xffff | |
173 | #define MVPP2_PON_CAUSE_TXP_OCCUP_DESC_ALL_MASK 0x3fc00000 | |
174 | #define MVPP2_PON_CAUSE_MISC_SUM_MASK BIT(31) | |
175 | #define MVPP2_ISR_MISC_CAUSE_REG 0x55b0 | |
176 | ||
177 | /* Buffer Manager registers */ | |
178 | #define MVPP2_BM_POOL_BASE_REG(pool) (0x6000 + ((pool) * 4)) | |
179 | #define MVPP2_BM_POOL_BASE_ADDR_MASK 0xfffff80 | |
180 | #define MVPP2_BM_POOL_SIZE_REG(pool) (0x6040 + ((pool) * 4)) | |
181 | #define MVPP2_BM_POOL_SIZE_MASK 0xfff0 | |
182 | #define MVPP2_BM_POOL_READ_PTR_REG(pool) (0x6080 + ((pool) * 4)) | |
183 | #define MVPP2_BM_POOL_GET_READ_PTR_MASK 0xfff0 | |
184 | #define MVPP2_BM_POOL_PTRS_NUM_REG(pool) (0x60c0 + ((pool) * 4)) | |
185 | #define MVPP2_BM_POOL_PTRS_NUM_MASK 0xfff0 | |
186 | #define MVPP2_BM_BPPI_READ_PTR_REG(pool) (0x6100 + ((pool) * 4)) | |
187 | #define MVPP2_BM_BPPI_PTRS_NUM_REG(pool) (0x6140 + ((pool) * 4)) | |
188 | #define MVPP2_BM_BPPI_PTR_NUM_MASK 0x7ff | |
189 | #define MVPP2_BM_BPPI_PREFETCH_FULL_MASK BIT(16) | |
190 | #define MVPP2_BM_POOL_CTRL_REG(pool) (0x6200 + ((pool) * 4)) | |
191 | #define MVPP2_BM_START_MASK BIT(0) | |
192 | #define MVPP2_BM_STOP_MASK BIT(1) | |
193 | #define MVPP2_BM_STATE_MASK BIT(4) | |
194 | #define MVPP2_BM_LOW_THRESH_OFFS 8 | |
195 | #define MVPP2_BM_LOW_THRESH_MASK 0x7f00 | |
196 | #define MVPP2_BM_LOW_THRESH_VALUE(val) ((val) << \ | |
197 | MVPP2_BM_LOW_THRESH_OFFS) | |
198 | #define MVPP2_BM_HIGH_THRESH_OFFS 16 | |
199 | #define MVPP2_BM_HIGH_THRESH_MASK 0x7f0000 | |
200 | #define MVPP2_BM_HIGH_THRESH_VALUE(val) ((val) << \ | |
201 | MVPP2_BM_HIGH_THRESH_OFFS) | |
202 | #define MVPP2_BM_INTR_CAUSE_REG(pool) (0x6240 + ((pool) * 4)) | |
203 | #define MVPP2_BM_RELEASED_DELAY_MASK BIT(0) | |
204 | #define MVPP2_BM_ALLOC_FAILED_MASK BIT(1) | |
205 | #define MVPP2_BM_BPPE_EMPTY_MASK BIT(2) | |
206 | #define MVPP2_BM_BPPE_FULL_MASK BIT(3) | |
207 | #define MVPP2_BM_AVAILABLE_BP_LOW_MASK BIT(4) | |
208 | #define MVPP2_BM_INTR_MASK_REG(pool) (0x6280 + ((pool) * 4)) | |
209 | #define MVPP2_BM_PHY_ALLOC_REG(pool) (0x6400 + ((pool) * 4)) | |
210 | #define MVPP2_BM_PHY_ALLOC_GRNTD_MASK BIT(0) | |
211 | #define MVPP2_BM_VIRT_ALLOC_REG 0x6440 | |
212 | #define MVPP2_BM_PHY_RLS_REG(pool) (0x6480 + ((pool) * 4)) | |
213 | #define MVPP2_BM_PHY_RLS_MC_BUFF_MASK BIT(0) | |
214 | #define MVPP2_BM_PHY_RLS_PRIO_EN_MASK BIT(1) | |
215 | #define MVPP2_BM_PHY_RLS_GRNTD_MASK BIT(2) | |
216 | #define MVPP2_BM_VIRT_RLS_REG 0x64c0 | |
217 | #define MVPP2_BM_MC_RLS_REG 0x64c4 | |
218 | #define MVPP2_BM_MC_ID_MASK 0xfff | |
219 | #define MVPP2_BM_FORCE_RELEASE_MASK BIT(12) | |
220 | ||
221 | /* TX Scheduler registers */ | |
222 | #define MVPP2_TXP_SCHED_PORT_INDEX_REG 0x8000 | |
223 | #define MVPP2_TXP_SCHED_Q_CMD_REG 0x8004 | |
224 | #define MVPP2_TXP_SCHED_ENQ_MASK 0xff | |
225 | #define MVPP2_TXP_SCHED_DISQ_OFFSET 8 | |
226 | #define MVPP2_TXP_SCHED_CMD_1_REG 0x8010 | |
227 | #define MVPP2_TXP_SCHED_PERIOD_REG 0x8018 | |
228 | #define MVPP2_TXP_SCHED_MTU_REG 0x801c | |
229 | #define MVPP2_TXP_MTU_MAX 0x7FFFF | |
230 | #define MVPP2_TXP_SCHED_REFILL_REG 0x8020 | |
231 | #define MVPP2_TXP_REFILL_TOKENS_ALL_MASK 0x7ffff | |
232 | #define MVPP2_TXP_REFILL_PERIOD_ALL_MASK 0x3ff00000 | |
233 | #define MVPP2_TXP_REFILL_PERIOD_MASK(v) ((v) << 20) | |
234 | #define MVPP2_TXP_SCHED_TOKEN_SIZE_REG 0x8024 | |
235 | #define MVPP2_TXP_TOKEN_SIZE_MAX 0xffffffff | |
236 | #define MVPP2_TXQ_SCHED_REFILL_REG(q) (0x8040 + ((q) << 2)) | |
237 | #define MVPP2_TXQ_REFILL_TOKENS_ALL_MASK 0x7ffff | |
238 | #define MVPP2_TXQ_REFILL_PERIOD_ALL_MASK 0x3ff00000 | |
239 | #define MVPP2_TXQ_REFILL_PERIOD_MASK(v) ((v) << 20) | |
240 | #define MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(q) (0x8060 + ((q) << 2)) | |
241 | #define MVPP2_TXQ_TOKEN_SIZE_MAX 0x7fffffff | |
242 | #define MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(q) (0x8080 + ((q) << 2)) | |
243 | #define MVPP2_TXQ_TOKEN_CNTR_MAX 0xffffffff | |
244 | ||
245 | /* TX general registers */ | |
246 | #define MVPP2_TX_SNOOP_REG 0x8800 | |
247 | #define MVPP2_TX_PORT_FLUSH_REG 0x8810 | |
248 | #define MVPP2_TX_PORT_FLUSH_MASK(port) (1 << (port)) | |
249 | ||
250 | /* LMS registers */ | |
251 | #define MVPP2_SRC_ADDR_MIDDLE 0x24 | |
252 | #define MVPP2_SRC_ADDR_HIGH 0x28 | |
08a23755 MW |
253 | #define MVPP2_PHY_AN_CFG0_REG 0x34 |
254 | #define MVPP2_PHY_AN_STOP_SMI0_MASK BIT(7) | |
3f518509 MW |
255 | #define MVPP2_MIB_COUNTERS_BASE(port) (0x1000 + ((port) >> 1) * \ |
256 | 0x400 + (port) * 0x400) | |
257 | #define MVPP2_MIB_LATE_COLLISION 0x7c | |
258 | #define MVPP2_ISR_SUM_MASK_REG 0x220c | |
259 | #define MVPP2_MNG_EXTENDED_GLOBAL_CTRL_REG 0x305c | |
260 | #define MVPP2_EXT_GLOBAL_CTRL_DEFAULT 0x27 | |
261 | ||
262 | /* Per-port registers */ | |
263 | #define MVPP2_GMAC_CTRL_0_REG 0x0 | |
264 | #define MVPP2_GMAC_PORT_EN_MASK BIT(0) | |
265 | #define MVPP2_GMAC_MAX_RX_SIZE_OFFS 2 | |
266 | #define MVPP2_GMAC_MAX_RX_SIZE_MASK 0x7ffc | |
267 | #define MVPP2_GMAC_MIB_CNTR_EN_MASK BIT(15) | |
268 | #define MVPP2_GMAC_CTRL_1_REG 0x4 | |
b5c0a800 | 269 | #define MVPP2_GMAC_PERIODIC_XON_EN_MASK BIT(1) |
3f518509 MW |
270 | #define MVPP2_GMAC_GMII_LB_EN_MASK BIT(5) |
271 | #define MVPP2_GMAC_PCS_LB_EN_BIT 6 | |
272 | #define MVPP2_GMAC_PCS_LB_EN_MASK BIT(6) | |
273 | #define MVPP2_GMAC_SA_LOW_OFFS 7 | |
274 | #define MVPP2_GMAC_CTRL_2_REG 0x8 | |
275 | #define MVPP2_GMAC_INBAND_AN_MASK BIT(0) | |
276 | #define MVPP2_GMAC_PCS_ENABLE_MASK BIT(3) | |
277 | #define MVPP2_GMAC_PORT_RGMII_MASK BIT(4) | |
278 | #define MVPP2_GMAC_PORT_RESET_MASK BIT(6) | |
279 | #define MVPP2_GMAC_AUTONEG_CONFIG 0xc | |
280 | #define MVPP2_GMAC_FORCE_LINK_DOWN BIT(0) | |
281 | #define MVPP2_GMAC_FORCE_LINK_PASS BIT(1) | |
282 | #define MVPP2_GMAC_CONFIG_MII_SPEED BIT(5) | |
283 | #define MVPP2_GMAC_CONFIG_GMII_SPEED BIT(6) | |
284 | #define MVPP2_GMAC_AN_SPEED_EN BIT(7) | |
08a23755 | 285 | #define MVPP2_GMAC_FC_ADV_EN BIT(9) |
3f518509 MW |
286 | #define MVPP2_GMAC_CONFIG_FULL_DUPLEX BIT(12) |
287 | #define MVPP2_GMAC_AN_DUPLEX_EN BIT(13) | |
288 | #define MVPP2_GMAC_PORT_FIFO_CFG_1_REG 0x1c | |
289 | #define MVPP2_GMAC_TX_FIFO_MIN_TH_OFFS 6 | |
290 | #define MVPP2_GMAC_TX_FIFO_MIN_TH_ALL_MASK 0x1fc0 | |
291 | #define MVPP2_GMAC_TX_FIFO_MIN_TH_MASK(v) (((v) << 6) & \ | |
292 | MVPP2_GMAC_TX_FIFO_MIN_TH_ALL_MASK) | |
293 | ||
294 | #define MVPP2_CAUSE_TXQ_SENT_DESC_ALL_MASK 0xff | |
295 | ||
296 | /* Descriptor ring Macros */ | |
297 | #define MVPP2_QUEUE_NEXT_DESC(q, index) \ | |
298 | (((index) < (q)->last_desc) ? ((index) + 1) : 0) | |
299 | ||
300 | /* Various constants */ | |
301 | ||
302 | /* Coalescing */ | |
303 | #define MVPP2_TXDONE_COAL_PKTS_THRESH 15 | |
edc660fa | 304 | #define MVPP2_TXDONE_HRTIMER_PERIOD_NS 1000000UL |
3f518509 MW |
305 | #define MVPP2_RX_COAL_PKTS 32 |
306 | #define MVPP2_RX_COAL_USEC 100 | |
307 | ||
308 | /* The two bytes Marvell header. Either contains a special value used | |
309 | * by Marvell switches when a specific hardware mode is enabled (not | |
310 | * supported by this driver) or is filled automatically by zeroes on | |
311 | * the RX side. Those two bytes being at the front of the Ethernet | |
312 | * header, they allow to have the IP header aligned on a 4 bytes | |
313 | * boundary automatically: the hardware skips those two bytes on its | |
314 | * own. | |
315 | */ | |
316 | #define MVPP2_MH_SIZE 2 | |
317 | #define MVPP2_ETH_TYPE_LEN 2 | |
318 | #define MVPP2_PPPOE_HDR_SIZE 8 | |
319 | #define MVPP2_VLAN_TAG_LEN 4 | |
320 | ||
321 | /* Lbtd 802.3 type */ | |
322 | #define MVPP2_IP_LBDT_TYPE 0xfffa | |
323 | ||
3f518509 MW |
324 | #define MVPP2_TX_CSUM_MAX_SIZE 9800 |
325 | ||
326 | /* Timeout constants */ | |
327 | #define MVPP2_TX_DISABLE_TIMEOUT_MSEC 1000 | |
328 | #define MVPP2_TX_PENDING_TIMEOUT_MSEC 1000 | |
329 | ||
330 | #define MVPP2_TX_MTU_MAX 0x7ffff | |
331 | ||
332 | /* Maximum number of T-CONTs of PON port */ | |
333 | #define MVPP2_MAX_TCONT 16 | |
334 | ||
335 | /* Maximum number of supported ports */ | |
336 | #define MVPP2_MAX_PORTS 4 | |
337 | ||
338 | /* Maximum number of TXQs used by single port */ | |
339 | #define MVPP2_MAX_TXQ 8 | |
340 | ||
341 | /* Maximum number of RXQs used by single port */ | |
342 | #define MVPP2_MAX_RXQ 8 | |
343 | ||
344 | /* Dfault number of RXQs in use */ | |
345 | #define MVPP2_DEFAULT_RXQ 4 | |
346 | ||
347 | /* Total number of RXQs available to all ports */ | |
348 | #define MVPP2_RXQ_TOTAL_NUM (MVPP2_MAX_PORTS * MVPP2_MAX_RXQ) | |
349 | ||
350 | /* Max number of Rx descriptors */ | |
351 | #define MVPP2_MAX_RXD 128 | |
352 | ||
353 | /* Max number of Tx descriptors */ | |
354 | #define MVPP2_MAX_TXD 1024 | |
355 | ||
356 | /* Amount of Tx descriptors that can be reserved at once by CPU */ | |
357 | #define MVPP2_CPU_DESC_CHUNK 64 | |
358 | ||
359 | /* Max number of Tx descriptors in each aggregated queue */ | |
360 | #define MVPP2_AGGR_TXQ_SIZE 256 | |
361 | ||
362 | /* Descriptor aligned size */ | |
363 | #define MVPP2_DESC_ALIGNED_SIZE 32 | |
364 | ||
365 | /* Descriptor alignment mask */ | |
366 | #define MVPP2_TX_DESC_ALIGN (MVPP2_DESC_ALIGNED_SIZE - 1) | |
367 | ||
368 | /* RX FIFO constants */ | |
369 | #define MVPP2_RX_FIFO_PORT_DATA_SIZE 0x2000 | |
370 | #define MVPP2_RX_FIFO_PORT_ATTR_SIZE 0x80 | |
371 | #define MVPP2_RX_FIFO_PORT_MIN_PKT 0x80 | |
372 | ||
373 | /* RX buffer constants */ | |
374 | #define MVPP2_SKB_SHINFO_SIZE \ | |
375 | SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) | |
376 | ||
377 | #define MVPP2_RX_PKT_SIZE(mtu) \ | |
378 | ALIGN((mtu) + MVPP2_MH_SIZE + MVPP2_VLAN_TAG_LEN + \ | |
4a0a12d2 | 379 | ETH_HLEN + ETH_FCS_LEN, cache_line_size()) |
3f518509 MW |
380 | |
381 | #define MVPP2_RX_BUF_SIZE(pkt_size) ((pkt_size) + NET_SKB_PAD) | |
382 | #define MVPP2_RX_TOTAL_SIZE(buf_size) ((buf_size) + MVPP2_SKB_SHINFO_SIZE) | |
383 | #define MVPP2_RX_MAX_PKT_SIZE(total_size) \ | |
384 | ((total_size) - NET_SKB_PAD - MVPP2_SKB_SHINFO_SIZE) | |
385 | ||
386 | #define MVPP2_BIT_TO_BYTE(bit) ((bit) / 8) | |
387 | ||
388 | /* IPv6 max L3 address size */ | |
389 | #define MVPP2_MAX_L3_ADDR_SIZE 16 | |
390 | ||
391 | /* Port flags */ | |
392 | #define MVPP2_F_LOOPBACK BIT(0) | |
393 | ||
394 | /* Marvell tag types */ | |
395 | enum mvpp2_tag_type { | |
396 | MVPP2_TAG_TYPE_NONE = 0, | |
397 | MVPP2_TAG_TYPE_MH = 1, | |
398 | MVPP2_TAG_TYPE_DSA = 2, | |
399 | MVPP2_TAG_TYPE_EDSA = 3, | |
400 | MVPP2_TAG_TYPE_VLAN = 4, | |
401 | MVPP2_TAG_TYPE_LAST = 5 | |
402 | }; | |
403 | ||
404 | /* Parser constants */ | |
405 | #define MVPP2_PRS_TCAM_SRAM_SIZE 256 | |
406 | #define MVPP2_PRS_TCAM_WORDS 6 | |
407 | #define MVPP2_PRS_SRAM_WORDS 4 | |
408 | #define MVPP2_PRS_FLOW_ID_SIZE 64 | |
409 | #define MVPP2_PRS_FLOW_ID_MASK 0x3f | |
410 | #define MVPP2_PRS_TCAM_ENTRY_INVALID 1 | |
411 | #define MVPP2_PRS_TCAM_DSA_TAGGED_BIT BIT(5) | |
412 | #define MVPP2_PRS_IPV4_HEAD 0x40 | |
413 | #define MVPP2_PRS_IPV4_HEAD_MASK 0xf0 | |
414 | #define MVPP2_PRS_IPV4_MC 0xe0 | |
415 | #define MVPP2_PRS_IPV4_MC_MASK 0xf0 | |
416 | #define MVPP2_PRS_IPV4_BC_MASK 0xff | |
417 | #define MVPP2_PRS_IPV4_IHL 0x5 | |
418 | #define MVPP2_PRS_IPV4_IHL_MASK 0xf | |
419 | #define MVPP2_PRS_IPV6_MC 0xff | |
420 | #define MVPP2_PRS_IPV6_MC_MASK 0xff | |
421 | #define MVPP2_PRS_IPV6_HOP_MASK 0xff | |
422 | #define MVPP2_PRS_TCAM_PROTO_MASK 0xff | |
423 | #define MVPP2_PRS_TCAM_PROTO_MASK_L 0x3f | |
424 | #define MVPP2_PRS_DBL_VLANS_MAX 100 | |
425 | ||
426 | /* Tcam structure: | |
427 | * - lookup ID - 4 bits | |
428 | * - port ID - 1 byte | |
429 | * - additional information - 1 byte | |
430 | * - header data - 8 bytes | |
431 | * The fields are represented by MVPP2_PRS_TCAM_DATA_REG(5)->(0). | |
432 | */ | |
433 | #define MVPP2_PRS_AI_BITS 8 | |
434 | #define MVPP2_PRS_PORT_MASK 0xff | |
435 | #define MVPP2_PRS_LU_MASK 0xf | |
436 | #define MVPP2_PRS_TCAM_DATA_BYTE(offs) \ | |
437 | (((offs) - ((offs) % 2)) * 2 + ((offs) % 2)) | |
438 | #define MVPP2_PRS_TCAM_DATA_BYTE_EN(offs) \ | |
439 | (((offs) * 2) - ((offs) % 2) + 2) | |
440 | #define MVPP2_PRS_TCAM_AI_BYTE 16 | |
441 | #define MVPP2_PRS_TCAM_PORT_BYTE 17 | |
442 | #define MVPP2_PRS_TCAM_LU_BYTE 20 | |
443 | #define MVPP2_PRS_TCAM_EN_OFFS(offs) ((offs) + 2) | |
444 | #define MVPP2_PRS_TCAM_INV_WORD 5 | |
445 | /* Tcam entries ID */ | |
446 | #define MVPP2_PE_DROP_ALL 0 | |
447 | #define MVPP2_PE_FIRST_FREE_TID 1 | |
448 | #define MVPP2_PE_LAST_FREE_TID (MVPP2_PRS_TCAM_SRAM_SIZE - 31) | |
449 | #define MVPP2_PE_IP6_EXT_PROTO_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 30) | |
450 | #define MVPP2_PE_MAC_MC_IP6 (MVPP2_PRS_TCAM_SRAM_SIZE - 29) | |
451 | #define MVPP2_PE_IP6_ADDR_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 28) | |
452 | #define MVPP2_PE_IP4_ADDR_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 27) | |
453 | #define MVPP2_PE_LAST_DEFAULT_FLOW (MVPP2_PRS_TCAM_SRAM_SIZE - 26) | |
454 | #define MVPP2_PE_FIRST_DEFAULT_FLOW (MVPP2_PRS_TCAM_SRAM_SIZE - 19) | |
455 | #define MVPP2_PE_EDSA_TAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 18) | |
456 | #define MVPP2_PE_EDSA_UNTAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 17) | |
457 | #define MVPP2_PE_DSA_TAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 16) | |
458 | #define MVPP2_PE_DSA_UNTAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 15) | |
459 | #define MVPP2_PE_ETYPE_EDSA_TAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 14) | |
460 | #define MVPP2_PE_ETYPE_EDSA_UNTAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 13) | |
461 | #define MVPP2_PE_ETYPE_DSA_TAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 12) | |
462 | #define MVPP2_PE_ETYPE_DSA_UNTAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 11) | |
463 | #define MVPP2_PE_MH_DEFAULT (MVPP2_PRS_TCAM_SRAM_SIZE - 10) | |
464 | #define MVPP2_PE_DSA_DEFAULT (MVPP2_PRS_TCAM_SRAM_SIZE - 9) | |
465 | #define MVPP2_PE_IP6_PROTO_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 8) | |
466 | #define MVPP2_PE_IP4_PROTO_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 7) | |
467 | #define MVPP2_PE_ETH_TYPE_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 6) | |
468 | #define MVPP2_PE_VLAN_DBL (MVPP2_PRS_TCAM_SRAM_SIZE - 5) | |
469 | #define MVPP2_PE_VLAN_NONE (MVPP2_PRS_TCAM_SRAM_SIZE - 4) | |
470 | #define MVPP2_PE_MAC_MC_ALL (MVPP2_PRS_TCAM_SRAM_SIZE - 3) | |
471 | #define MVPP2_PE_MAC_PROMISCUOUS (MVPP2_PRS_TCAM_SRAM_SIZE - 2) | |
472 | #define MVPP2_PE_MAC_NON_PROMISCUOUS (MVPP2_PRS_TCAM_SRAM_SIZE - 1) | |
473 | ||
474 | /* Sram structure | |
475 | * The fields are represented by MVPP2_PRS_TCAM_DATA_REG(3)->(0). | |
476 | */ | |
477 | #define MVPP2_PRS_SRAM_RI_OFFS 0 | |
478 | #define MVPP2_PRS_SRAM_RI_WORD 0 | |
479 | #define MVPP2_PRS_SRAM_RI_CTRL_OFFS 32 | |
480 | #define MVPP2_PRS_SRAM_RI_CTRL_WORD 1 | |
481 | #define MVPP2_PRS_SRAM_RI_CTRL_BITS 32 | |
482 | #define MVPP2_PRS_SRAM_SHIFT_OFFS 64 | |
483 | #define MVPP2_PRS_SRAM_SHIFT_SIGN_BIT 72 | |
484 | #define MVPP2_PRS_SRAM_UDF_OFFS 73 | |
485 | #define MVPP2_PRS_SRAM_UDF_BITS 8 | |
486 | #define MVPP2_PRS_SRAM_UDF_MASK 0xff | |
487 | #define MVPP2_PRS_SRAM_UDF_SIGN_BIT 81 | |
488 | #define MVPP2_PRS_SRAM_UDF_TYPE_OFFS 82 | |
489 | #define MVPP2_PRS_SRAM_UDF_TYPE_MASK 0x7 | |
490 | #define MVPP2_PRS_SRAM_UDF_TYPE_L3 1 | |
491 | #define MVPP2_PRS_SRAM_UDF_TYPE_L4 4 | |
492 | #define MVPP2_PRS_SRAM_OP_SEL_SHIFT_OFFS 85 | |
493 | #define MVPP2_PRS_SRAM_OP_SEL_SHIFT_MASK 0x3 | |
494 | #define MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD 1 | |
495 | #define MVPP2_PRS_SRAM_OP_SEL_SHIFT_IP4_ADD 2 | |
496 | #define MVPP2_PRS_SRAM_OP_SEL_SHIFT_IP6_ADD 3 | |
497 | #define MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS 87 | |
498 | #define MVPP2_PRS_SRAM_OP_SEL_UDF_BITS 2 | |
499 | #define MVPP2_PRS_SRAM_OP_SEL_UDF_MASK 0x3 | |
500 | #define MVPP2_PRS_SRAM_OP_SEL_UDF_ADD 0 | |
501 | #define MVPP2_PRS_SRAM_OP_SEL_UDF_IP4_ADD 2 | |
502 | #define MVPP2_PRS_SRAM_OP_SEL_UDF_IP6_ADD 3 | |
503 | #define MVPP2_PRS_SRAM_OP_SEL_BASE_OFFS 89 | |
504 | #define MVPP2_PRS_SRAM_AI_OFFS 90 | |
505 | #define MVPP2_PRS_SRAM_AI_CTRL_OFFS 98 | |
506 | #define MVPP2_PRS_SRAM_AI_CTRL_BITS 8 | |
507 | #define MVPP2_PRS_SRAM_AI_MASK 0xff | |
508 | #define MVPP2_PRS_SRAM_NEXT_LU_OFFS 106 | |
509 | #define MVPP2_PRS_SRAM_NEXT_LU_MASK 0xf | |
510 | #define MVPP2_PRS_SRAM_LU_DONE_BIT 110 | |
511 | #define MVPP2_PRS_SRAM_LU_GEN_BIT 111 | |
512 | ||
513 | /* Sram result info bits assignment */ | |
514 | #define MVPP2_PRS_RI_MAC_ME_MASK 0x1 | |
515 | #define MVPP2_PRS_RI_DSA_MASK 0x2 | |
516 | #define MVPP2_PRS_RI_VLAN_MASK 0xc | |
517 | #define MVPP2_PRS_RI_VLAN_NONE ~(BIT(2) | BIT(3)) | |
518 | #define MVPP2_PRS_RI_VLAN_SINGLE BIT(2) | |
519 | #define MVPP2_PRS_RI_VLAN_DOUBLE BIT(3) | |
520 | #define MVPP2_PRS_RI_VLAN_TRIPLE (BIT(2) | BIT(3)) | |
521 | #define MVPP2_PRS_RI_CPU_CODE_MASK 0x70 | |
522 | #define MVPP2_PRS_RI_CPU_CODE_RX_SPEC BIT(4) | |
523 | #define MVPP2_PRS_RI_L2_CAST_MASK 0x600 | |
524 | #define MVPP2_PRS_RI_L2_UCAST ~(BIT(9) | BIT(10)) | |
525 | #define MVPP2_PRS_RI_L2_MCAST BIT(9) | |
526 | #define MVPP2_PRS_RI_L2_BCAST BIT(10) | |
527 | #define MVPP2_PRS_RI_PPPOE_MASK 0x800 | |
528 | #define MVPP2_PRS_RI_L3_PROTO_MASK 0x7000 | |
529 | #define MVPP2_PRS_RI_L3_UN ~(BIT(12) | BIT(13) | BIT(14)) | |
530 | #define MVPP2_PRS_RI_L3_IP4 BIT(12) | |
531 | #define MVPP2_PRS_RI_L3_IP4_OPT BIT(13) | |
532 | #define MVPP2_PRS_RI_L3_IP4_OTHER (BIT(12) | BIT(13)) | |
533 | #define MVPP2_PRS_RI_L3_IP6 BIT(14) | |
534 | #define MVPP2_PRS_RI_L3_IP6_EXT (BIT(12) | BIT(14)) | |
535 | #define MVPP2_PRS_RI_L3_ARP (BIT(13) | BIT(14)) | |
536 | #define MVPP2_PRS_RI_L3_ADDR_MASK 0x18000 | |
537 | #define MVPP2_PRS_RI_L3_UCAST ~(BIT(15) | BIT(16)) | |
538 | #define MVPP2_PRS_RI_L3_MCAST BIT(15) | |
539 | #define MVPP2_PRS_RI_L3_BCAST (BIT(15) | BIT(16)) | |
540 | #define MVPP2_PRS_RI_IP_FRAG_MASK 0x20000 | |
541 | #define MVPP2_PRS_RI_UDF3_MASK 0x300000 | |
542 | #define MVPP2_PRS_RI_UDF3_RX_SPECIAL BIT(21) | |
543 | #define MVPP2_PRS_RI_L4_PROTO_MASK 0x1c00000 | |
544 | #define MVPP2_PRS_RI_L4_TCP BIT(22) | |
545 | #define MVPP2_PRS_RI_L4_UDP BIT(23) | |
546 | #define MVPP2_PRS_RI_L4_OTHER (BIT(22) | BIT(23)) | |
547 | #define MVPP2_PRS_RI_UDF7_MASK 0x60000000 | |
548 | #define MVPP2_PRS_RI_UDF7_IP6_LITE BIT(29) | |
549 | #define MVPP2_PRS_RI_DROP_MASK 0x80000000 | |
550 | ||
551 | /* Sram additional info bits assignment */ | |
552 | #define MVPP2_PRS_IPV4_DIP_AI_BIT BIT(0) | |
553 | #define MVPP2_PRS_IPV6_NO_EXT_AI_BIT BIT(0) | |
554 | #define MVPP2_PRS_IPV6_EXT_AI_BIT BIT(1) | |
555 | #define MVPP2_PRS_IPV6_EXT_AH_AI_BIT BIT(2) | |
556 | #define MVPP2_PRS_IPV6_EXT_AH_LEN_AI_BIT BIT(3) | |
557 | #define MVPP2_PRS_IPV6_EXT_AH_L4_AI_BIT BIT(4) | |
558 | #define MVPP2_PRS_SINGLE_VLAN_AI 0 | |
559 | #define MVPP2_PRS_DBL_VLAN_AI_BIT BIT(7) | |
560 | ||
561 | /* DSA/EDSA type */ | |
562 | #define MVPP2_PRS_TAGGED true | |
563 | #define MVPP2_PRS_UNTAGGED false | |
564 | #define MVPP2_PRS_EDSA true | |
565 | #define MVPP2_PRS_DSA false | |
566 | ||
567 | /* MAC entries, shadow udf */ | |
568 | enum mvpp2_prs_udf { | |
569 | MVPP2_PRS_UDF_MAC_DEF, | |
570 | MVPP2_PRS_UDF_MAC_RANGE, | |
571 | MVPP2_PRS_UDF_L2_DEF, | |
572 | MVPP2_PRS_UDF_L2_DEF_COPY, | |
573 | MVPP2_PRS_UDF_L2_USER, | |
574 | }; | |
575 | ||
576 | /* Lookup ID */ | |
577 | enum mvpp2_prs_lookup { | |
578 | MVPP2_PRS_LU_MH, | |
579 | MVPP2_PRS_LU_MAC, | |
580 | MVPP2_PRS_LU_DSA, | |
581 | MVPP2_PRS_LU_VLAN, | |
582 | MVPP2_PRS_LU_L2, | |
583 | MVPP2_PRS_LU_PPPOE, | |
584 | MVPP2_PRS_LU_IP4, | |
585 | MVPP2_PRS_LU_IP6, | |
586 | MVPP2_PRS_LU_FLOWS, | |
587 | MVPP2_PRS_LU_LAST, | |
588 | }; | |
589 | ||
590 | /* L3 cast enum */ | |
591 | enum mvpp2_prs_l3_cast { | |
592 | MVPP2_PRS_L3_UNI_CAST, | |
593 | MVPP2_PRS_L3_MULTI_CAST, | |
594 | MVPP2_PRS_L3_BROAD_CAST | |
595 | }; | |
596 | ||
597 | /* Classifier constants */ | |
598 | #define MVPP2_CLS_FLOWS_TBL_SIZE 512 | |
599 | #define MVPP2_CLS_FLOWS_TBL_DATA_WORDS 3 | |
600 | #define MVPP2_CLS_LKP_TBL_SIZE 64 | |
601 | ||
602 | /* BM constants */ | |
603 | #define MVPP2_BM_POOLS_NUM 8 | |
604 | #define MVPP2_BM_LONG_BUF_NUM 1024 | |
605 | #define MVPP2_BM_SHORT_BUF_NUM 2048 | |
606 | #define MVPP2_BM_POOL_SIZE_MAX (16*1024 - MVPP2_BM_POOL_PTR_ALIGN/4) | |
607 | #define MVPP2_BM_POOL_PTR_ALIGN 128 | |
608 | #define MVPP2_BM_SWF_LONG_POOL(port) ((port > 2) ? 2 : port) | |
609 | #define MVPP2_BM_SWF_SHORT_POOL 3 | |
610 | ||
611 | /* BM cookie (32 bits) definition */ | |
612 | #define MVPP2_BM_COOKIE_POOL_OFFS 8 | |
613 | #define MVPP2_BM_COOKIE_CPU_OFFS 24 | |
614 | ||
615 | /* BM short pool packet size | |
616 | * These value assure that for SWF the total number | |
617 | * of bytes allocated for each buffer will be 512 | |
618 | */ | |
619 | #define MVPP2_BM_SHORT_PKT_SIZE MVPP2_RX_MAX_PKT_SIZE(512) | |
620 | ||
621 | enum mvpp2_bm_type { | |
622 | MVPP2_BM_FREE, | |
623 | MVPP2_BM_SWF_LONG, | |
624 | MVPP2_BM_SWF_SHORT | |
625 | }; | |
626 | ||
627 | /* Definitions */ | |
628 | ||
629 | /* Shared Packet Processor resources */ | |
630 | struct mvpp2 { | |
631 | /* Shared registers' base addresses */ | |
632 | void __iomem *base; | |
633 | void __iomem *lms_base; | |
634 | ||
635 | /* Common clocks */ | |
636 | struct clk *pp_clk; | |
637 | struct clk *gop_clk; | |
638 | ||
639 | /* List of pointers to port structures */ | |
640 | struct mvpp2_port **port_list; | |
641 | ||
642 | /* Aggregated TXQs */ | |
643 | struct mvpp2_tx_queue *aggr_txqs; | |
644 | ||
645 | /* BM pools */ | |
646 | struct mvpp2_bm_pool *bm_pools; | |
647 | ||
648 | /* PRS shadow table */ | |
649 | struct mvpp2_prs_shadow *prs_shadow; | |
650 | /* PRS auxiliary table for double vlan entries control */ | |
651 | bool *prs_double_vlans; | |
652 | ||
653 | /* Tclk value */ | |
654 | u32 tclk; | |
655 | }; | |
656 | ||
657 | struct mvpp2_pcpu_stats { | |
658 | struct u64_stats_sync syncp; | |
659 | u64 rx_packets; | |
660 | u64 rx_bytes; | |
661 | u64 tx_packets; | |
662 | u64 tx_bytes; | |
663 | }; | |
664 | ||
edc660fa MW |
665 | /* Per-CPU port control */ |
666 | struct mvpp2_port_pcpu { | |
667 | struct hrtimer tx_done_timer; | |
668 | bool timer_scheduled; | |
669 | /* Tasklet for egress finalization */ | |
670 | struct tasklet_struct tx_done_tasklet; | |
671 | }; | |
672 | ||
3f518509 MW |
673 | struct mvpp2_port { |
674 | u8 id; | |
675 | ||
676 | int irq; | |
677 | ||
678 | struct mvpp2 *priv; | |
679 | ||
680 | /* Per-port registers' base address */ | |
681 | void __iomem *base; | |
682 | ||
683 | struct mvpp2_rx_queue **rxqs; | |
684 | struct mvpp2_tx_queue **txqs; | |
685 | struct net_device *dev; | |
686 | ||
687 | int pkt_size; | |
688 | ||
689 | u32 pending_cause_rx; | |
690 | struct napi_struct napi; | |
691 | ||
edc660fa MW |
692 | /* Per-CPU port control */ |
693 | struct mvpp2_port_pcpu __percpu *pcpu; | |
694 | ||
3f518509 MW |
695 | /* Flags */ |
696 | unsigned long flags; | |
697 | ||
698 | u16 tx_ring_size; | |
699 | u16 rx_ring_size; | |
700 | struct mvpp2_pcpu_stats __percpu *stats; | |
701 | ||
702 | struct phy_device *phy_dev; | |
703 | phy_interface_t phy_interface; | |
704 | struct device_node *phy_node; | |
705 | unsigned int link; | |
706 | unsigned int duplex; | |
707 | unsigned int speed; | |
708 | ||
709 | struct mvpp2_bm_pool *pool_long; | |
710 | struct mvpp2_bm_pool *pool_short; | |
711 | ||
712 | /* Index of first port's physical RXQ */ | |
713 | u8 first_rxq; | |
714 | }; | |
715 | ||
716 | /* The mvpp2_tx_desc and mvpp2_rx_desc structures describe the | |
717 | * layout of the transmit and reception DMA descriptors, and their | |
718 | * layout is therefore defined by the hardware design | |
719 | */ | |
720 | ||
721 | #define MVPP2_TXD_L3_OFF_SHIFT 0 | |
722 | #define MVPP2_TXD_IP_HLEN_SHIFT 8 | |
723 | #define MVPP2_TXD_L4_CSUM_FRAG BIT(13) | |
724 | #define MVPP2_TXD_L4_CSUM_NOT BIT(14) | |
725 | #define MVPP2_TXD_IP_CSUM_DISABLE BIT(15) | |
726 | #define MVPP2_TXD_PADDING_DISABLE BIT(23) | |
727 | #define MVPP2_TXD_L4_UDP BIT(24) | |
728 | #define MVPP2_TXD_L3_IP6 BIT(26) | |
729 | #define MVPP2_TXD_L_DESC BIT(28) | |
730 | #define MVPP2_TXD_F_DESC BIT(29) | |
731 | ||
732 | #define MVPP2_RXD_ERR_SUMMARY BIT(15) | |
733 | #define MVPP2_RXD_ERR_CODE_MASK (BIT(13) | BIT(14)) | |
734 | #define MVPP2_RXD_ERR_CRC 0x0 | |
735 | #define MVPP2_RXD_ERR_OVERRUN BIT(13) | |
736 | #define MVPP2_RXD_ERR_RESOURCE (BIT(13) | BIT(14)) | |
737 | #define MVPP2_RXD_BM_POOL_ID_OFFS 16 | |
738 | #define MVPP2_RXD_BM_POOL_ID_MASK (BIT(16) | BIT(17) | BIT(18)) | |
739 | #define MVPP2_RXD_HWF_SYNC BIT(21) | |
740 | #define MVPP2_RXD_L4_CSUM_OK BIT(22) | |
741 | #define MVPP2_RXD_IP4_HEADER_ERR BIT(24) | |
742 | #define MVPP2_RXD_L4_TCP BIT(25) | |
743 | #define MVPP2_RXD_L4_UDP BIT(26) | |
744 | #define MVPP2_RXD_L3_IP4 BIT(28) | |
745 | #define MVPP2_RXD_L3_IP6 BIT(30) | |
746 | #define MVPP2_RXD_BUF_HDR BIT(31) | |
747 | ||
748 | struct mvpp2_tx_desc { | |
749 | u32 command; /* Options used by HW for packet transmitting.*/ | |
750 | u8 packet_offset; /* the offset from the buffer beginning */ | |
751 | u8 phys_txq; /* destination queue ID */ | |
752 | u16 data_size; /* data size of transmitted packet in bytes */ | |
753 | u32 buf_phys_addr; /* physical addr of transmitted buffer */ | |
754 | u32 buf_cookie; /* cookie for access to TX buffer in tx path */ | |
755 | u32 reserved1[3]; /* hw_cmd (for future use, BM, PON, PNC) */ | |
756 | u32 reserved2; /* reserved (for future use) */ | |
757 | }; | |
758 | ||
759 | struct mvpp2_rx_desc { | |
760 | u32 status; /* info about received packet */ | |
761 | u16 reserved1; /* parser_info (for future use, PnC) */ | |
762 | u16 data_size; /* size of received packet in bytes */ | |
763 | u32 buf_phys_addr; /* physical address of the buffer */ | |
764 | u32 buf_cookie; /* cookie for access to RX buffer in rx path */ | |
765 | u16 reserved2; /* gem_port_id (for future use, PON) */ | |
766 | u16 reserved3; /* csum_l4 (for future use, PnC) */ | |
767 | u8 reserved4; /* bm_qset (for future use, BM) */ | |
768 | u8 reserved5; | |
769 | u16 reserved6; /* classify_info (for future use, PnC) */ | |
770 | u32 reserved7; /* flow_id (for future use, PnC) */ | |
771 | u32 reserved8; | |
772 | }; | |
773 | ||
774 | /* Per-CPU Tx queue control */ | |
775 | struct mvpp2_txq_pcpu { | |
776 | int cpu; | |
777 | ||
778 | /* Number of Tx DMA descriptors in the descriptor ring */ | |
779 | int size; | |
780 | ||
781 | /* Number of currently used Tx DMA descriptor in the | |
782 | * descriptor ring | |
783 | */ | |
784 | int count; | |
785 | ||
786 | /* Number of Tx DMA descriptors reserved for each CPU */ | |
787 | int reserved_num; | |
788 | ||
789 | /* Array of transmitted skb */ | |
790 | struct sk_buff **tx_skb; | |
791 | ||
71ce391d MW |
792 | /* Array of transmitted buffers' physical addresses */ |
793 | dma_addr_t *tx_buffs; | |
794 | ||
3f518509 MW |
795 | /* Index of last TX DMA descriptor that was inserted */ |
796 | int txq_put_index; | |
797 | ||
798 | /* Index of the TX DMA descriptor to be cleaned up */ | |
799 | int txq_get_index; | |
800 | }; | |
801 | ||
802 | struct mvpp2_tx_queue { | |
803 | /* Physical number of this Tx queue */ | |
804 | u8 id; | |
805 | ||
806 | /* Logical number of this Tx queue */ | |
807 | u8 log_id; | |
808 | ||
809 | /* Number of Tx DMA descriptors in the descriptor ring */ | |
810 | int size; | |
811 | ||
812 | /* Number of currently used Tx DMA descriptor in the descriptor ring */ | |
813 | int count; | |
814 | ||
815 | /* Per-CPU control of physical Tx queues */ | |
816 | struct mvpp2_txq_pcpu __percpu *pcpu; | |
817 | ||
818 | /* Array of transmitted skb */ | |
819 | struct sk_buff **tx_skb; | |
820 | ||
821 | u32 done_pkts_coal; | |
822 | ||
823 | /* Virtual address of thex Tx DMA descriptors array */ | |
824 | struct mvpp2_tx_desc *descs; | |
825 | ||
826 | /* DMA address of the Tx DMA descriptors array */ | |
827 | dma_addr_t descs_phys; | |
828 | ||
829 | /* Index of the last Tx DMA descriptor */ | |
830 | int last_desc; | |
831 | ||
832 | /* Index of the next Tx DMA descriptor to process */ | |
833 | int next_desc_to_proc; | |
834 | }; | |
835 | ||
836 | struct mvpp2_rx_queue { | |
837 | /* RX queue number, in the range 0-31 for physical RXQs */ | |
838 | u8 id; | |
839 | ||
840 | /* Num of rx descriptors in the rx descriptor ring */ | |
841 | int size; | |
842 | ||
843 | u32 pkts_coal; | |
844 | u32 time_coal; | |
845 | ||
846 | /* Virtual address of the RX DMA descriptors array */ | |
847 | struct mvpp2_rx_desc *descs; | |
848 | ||
849 | /* DMA address of the RX DMA descriptors array */ | |
850 | dma_addr_t descs_phys; | |
851 | ||
852 | /* Index of the last RX DMA descriptor */ | |
853 | int last_desc; | |
854 | ||
855 | /* Index of the next RX DMA descriptor to process */ | |
856 | int next_desc_to_proc; | |
857 | ||
858 | /* ID of port to which physical RXQ is mapped */ | |
859 | int port; | |
860 | ||
861 | /* Port's logic RXQ number to which physical RXQ is mapped */ | |
862 | int logic_rxq; | |
863 | }; | |
864 | ||
865 | union mvpp2_prs_tcam_entry { | |
866 | u32 word[MVPP2_PRS_TCAM_WORDS]; | |
867 | u8 byte[MVPP2_PRS_TCAM_WORDS * 4]; | |
868 | }; | |
869 | ||
870 | union mvpp2_prs_sram_entry { | |
871 | u32 word[MVPP2_PRS_SRAM_WORDS]; | |
872 | u8 byte[MVPP2_PRS_SRAM_WORDS * 4]; | |
873 | }; | |
874 | ||
875 | struct mvpp2_prs_entry { | |
876 | u32 index; | |
877 | union mvpp2_prs_tcam_entry tcam; | |
878 | union mvpp2_prs_sram_entry sram; | |
879 | }; | |
880 | ||
881 | struct mvpp2_prs_shadow { | |
882 | bool valid; | |
883 | bool finish; | |
884 | ||
885 | /* Lookup ID */ | |
886 | int lu; | |
887 | ||
888 | /* User defined offset */ | |
889 | int udf; | |
890 | ||
891 | /* Result info */ | |
892 | u32 ri; | |
893 | u32 ri_mask; | |
894 | }; | |
895 | ||
896 | struct mvpp2_cls_flow_entry { | |
897 | u32 index; | |
898 | u32 data[MVPP2_CLS_FLOWS_TBL_DATA_WORDS]; | |
899 | }; | |
900 | ||
901 | struct mvpp2_cls_lookup_entry { | |
902 | u32 lkpid; | |
903 | u32 way; | |
904 | u32 data; | |
905 | }; | |
906 | ||
907 | struct mvpp2_bm_pool { | |
908 | /* Pool number in the range 0-7 */ | |
909 | int id; | |
910 | enum mvpp2_bm_type type; | |
911 | ||
912 | /* Buffer Pointers Pool External (BPPE) size */ | |
913 | int size; | |
914 | /* Number of buffers for this pool */ | |
915 | int buf_num; | |
916 | /* Pool buffer size */ | |
917 | int buf_size; | |
918 | /* Packet size */ | |
919 | int pkt_size; | |
920 | ||
921 | /* BPPE virtual base address */ | |
922 | u32 *virt_addr; | |
923 | /* BPPE physical base address */ | |
924 | dma_addr_t phys_addr; | |
925 | ||
926 | /* Ports using BM pool */ | |
927 | u32 port_map; | |
928 | ||
929 | /* Occupied buffers indicator */ | |
930 | atomic_t in_use; | |
931 | int in_use_thresh; | |
3f518509 MW |
932 | }; |
933 | ||
934 | struct mvpp2_buff_hdr { | |
935 | u32 next_buff_phys_addr; | |
936 | u32 next_buff_virt_addr; | |
937 | u16 byte_count; | |
938 | u16 info; | |
939 | u8 reserved1; /* bm_qset (for future use, BM) */ | |
940 | }; | |
941 | ||
942 | /* Buffer header info bits */ | |
943 | #define MVPP2_B_HDR_INFO_MC_ID_MASK 0xfff | |
944 | #define MVPP2_B_HDR_INFO_MC_ID(info) ((info) & MVPP2_B_HDR_INFO_MC_ID_MASK) | |
945 | #define MVPP2_B_HDR_INFO_LAST_OFFS 12 | |
946 | #define MVPP2_B_HDR_INFO_LAST_MASK BIT(12) | |
947 | #define MVPP2_B_HDR_INFO_IS_LAST(info) \ | |
948 | ((info & MVPP2_B_HDR_INFO_LAST_MASK) >> MVPP2_B_HDR_INFO_LAST_OFFS) | |
949 | ||
950 | /* Static declaractions */ | |
951 | ||
952 | /* Number of RXQs used by single port */ | |
953 | static int rxq_number = MVPP2_DEFAULT_RXQ; | |
954 | /* Number of TXQs used by single port */ | |
955 | static int txq_number = MVPP2_MAX_TXQ; | |
956 | ||
957 | #define MVPP2_DRIVER_NAME "mvpp2" | |
958 | #define MVPP2_DRIVER_VERSION "1.0" | |
959 | ||
960 | /* Utility/helper methods */ | |
961 | ||
962 | static void mvpp2_write(struct mvpp2 *priv, u32 offset, u32 data) | |
963 | { | |
964 | writel(data, priv->base + offset); | |
965 | } | |
966 | ||
967 | static u32 mvpp2_read(struct mvpp2 *priv, u32 offset) | |
968 | { | |
969 | return readl(priv->base + offset); | |
970 | } | |
971 | ||
972 | static void mvpp2_txq_inc_get(struct mvpp2_txq_pcpu *txq_pcpu) | |
973 | { | |
974 | txq_pcpu->txq_get_index++; | |
975 | if (txq_pcpu->txq_get_index == txq_pcpu->size) | |
976 | txq_pcpu->txq_get_index = 0; | |
977 | } | |
978 | ||
979 | static void mvpp2_txq_inc_put(struct mvpp2_txq_pcpu *txq_pcpu, | |
71ce391d MW |
980 | struct sk_buff *skb, |
981 | struct mvpp2_tx_desc *tx_desc) | |
3f518509 MW |
982 | { |
983 | txq_pcpu->tx_skb[txq_pcpu->txq_put_index] = skb; | |
71ce391d MW |
984 | if (skb) |
985 | txq_pcpu->tx_buffs[txq_pcpu->txq_put_index] = | |
986 | tx_desc->buf_phys_addr; | |
3f518509 MW |
987 | txq_pcpu->txq_put_index++; |
988 | if (txq_pcpu->txq_put_index == txq_pcpu->size) | |
989 | txq_pcpu->txq_put_index = 0; | |
990 | } | |
991 | ||
992 | /* Get number of physical egress port */ | |
993 | static inline int mvpp2_egress_port(struct mvpp2_port *port) | |
994 | { | |
995 | return MVPP2_MAX_TCONT + port->id; | |
996 | } | |
997 | ||
998 | /* Get number of physical TXQ */ | |
999 | static inline int mvpp2_txq_phys(int port, int txq) | |
1000 | { | |
1001 | return (MVPP2_MAX_TCONT + port) * MVPP2_MAX_TXQ + txq; | |
1002 | } | |
1003 | ||
1004 | /* Parser configuration routines */ | |
1005 | ||
1006 | /* Update parser tcam and sram hw entries */ | |
1007 | static int mvpp2_prs_hw_write(struct mvpp2 *priv, struct mvpp2_prs_entry *pe) | |
1008 | { | |
1009 | int i; | |
1010 | ||
1011 | if (pe->index > MVPP2_PRS_TCAM_SRAM_SIZE - 1) | |
1012 | return -EINVAL; | |
1013 | ||
1014 | /* Clear entry invalidation bit */ | |
1015 | pe->tcam.word[MVPP2_PRS_TCAM_INV_WORD] &= ~MVPP2_PRS_TCAM_INV_MASK; | |
1016 | ||
1017 | /* Write tcam index - indirect access */ | |
1018 | mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, pe->index); | |
1019 | for (i = 0; i < MVPP2_PRS_TCAM_WORDS; i++) | |
1020 | mvpp2_write(priv, MVPP2_PRS_TCAM_DATA_REG(i), pe->tcam.word[i]); | |
1021 | ||
1022 | /* Write sram index - indirect access */ | |
1023 | mvpp2_write(priv, MVPP2_PRS_SRAM_IDX_REG, pe->index); | |
1024 | for (i = 0; i < MVPP2_PRS_SRAM_WORDS; i++) | |
1025 | mvpp2_write(priv, MVPP2_PRS_SRAM_DATA_REG(i), pe->sram.word[i]); | |
1026 | ||
1027 | return 0; | |
1028 | } | |
1029 | ||
1030 | /* Read tcam entry from hw */ | |
1031 | static int mvpp2_prs_hw_read(struct mvpp2 *priv, struct mvpp2_prs_entry *pe) | |
1032 | { | |
1033 | int i; | |
1034 | ||
1035 | if (pe->index > MVPP2_PRS_TCAM_SRAM_SIZE - 1) | |
1036 | return -EINVAL; | |
1037 | ||
1038 | /* Write tcam index - indirect access */ | |
1039 | mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, pe->index); | |
1040 | ||
1041 | pe->tcam.word[MVPP2_PRS_TCAM_INV_WORD] = mvpp2_read(priv, | |
1042 | MVPP2_PRS_TCAM_DATA_REG(MVPP2_PRS_TCAM_INV_WORD)); | |
1043 | if (pe->tcam.word[MVPP2_PRS_TCAM_INV_WORD] & MVPP2_PRS_TCAM_INV_MASK) | |
1044 | return MVPP2_PRS_TCAM_ENTRY_INVALID; | |
1045 | ||
1046 | for (i = 0; i < MVPP2_PRS_TCAM_WORDS; i++) | |
1047 | pe->tcam.word[i] = mvpp2_read(priv, MVPP2_PRS_TCAM_DATA_REG(i)); | |
1048 | ||
1049 | /* Write sram index - indirect access */ | |
1050 | mvpp2_write(priv, MVPP2_PRS_SRAM_IDX_REG, pe->index); | |
1051 | for (i = 0; i < MVPP2_PRS_SRAM_WORDS; i++) | |
1052 | pe->sram.word[i] = mvpp2_read(priv, MVPP2_PRS_SRAM_DATA_REG(i)); | |
1053 | ||
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | /* Invalidate tcam hw entry */ | |
1058 | static void mvpp2_prs_hw_inv(struct mvpp2 *priv, int index) | |
1059 | { | |
1060 | /* Write index - indirect access */ | |
1061 | mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, index); | |
1062 | mvpp2_write(priv, MVPP2_PRS_TCAM_DATA_REG(MVPP2_PRS_TCAM_INV_WORD), | |
1063 | MVPP2_PRS_TCAM_INV_MASK); | |
1064 | } | |
1065 | ||
1066 | /* Enable shadow table entry and set its lookup ID */ | |
1067 | static void mvpp2_prs_shadow_set(struct mvpp2 *priv, int index, int lu) | |
1068 | { | |
1069 | priv->prs_shadow[index].valid = true; | |
1070 | priv->prs_shadow[index].lu = lu; | |
1071 | } | |
1072 | ||
1073 | /* Update ri fields in shadow table entry */ | |
1074 | static void mvpp2_prs_shadow_ri_set(struct mvpp2 *priv, int index, | |
1075 | unsigned int ri, unsigned int ri_mask) | |
1076 | { | |
1077 | priv->prs_shadow[index].ri_mask = ri_mask; | |
1078 | priv->prs_shadow[index].ri = ri; | |
1079 | } | |
1080 | ||
1081 | /* Update lookup field in tcam sw entry */ | |
1082 | static void mvpp2_prs_tcam_lu_set(struct mvpp2_prs_entry *pe, unsigned int lu) | |
1083 | { | |
1084 | int enable_off = MVPP2_PRS_TCAM_EN_OFFS(MVPP2_PRS_TCAM_LU_BYTE); | |
1085 | ||
1086 | pe->tcam.byte[MVPP2_PRS_TCAM_LU_BYTE] = lu; | |
1087 | pe->tcam.byte[enable_off] = MVPP2_PRS_LU_MASK; | |
1088 | } | |
1089 | ||
1090 | /* Update mask for single port in tcam sw entry */ | |
1091 | static void mvpp2_prs_tcam_port_set(struct mvpp2_prs_entry *pe, | |
1092 | unsigned int port, bool add) | |
1093 | { | |
1094 | int enable_off = MVPP2_PRS_TCAM_EN_OFFS(MVPP2_PRS_TCAM_PORT_BYTE); | |
1095 | ||
1096 | if (add) | |
1097 | pe->tcam.byte[enable_off] &= ~(1 << port); | |
1098 | else | |
1099 | pe->tcam.byte[enable_off] |= 1 << port; | |
1100 | } | |
1101 | ||
1102 | /* Update port map in tcam sw entry */ | |
1103 | static void mvpp2_prs_tcam_port_map_set(struct mvpp2_prs_entry *pe, | |
1104 | unsigned int ports) | |
1105 | { | |
1106 | unsigned char port_mask = MVPP2_PRS_PORT_MASK; | |
1107 | int enable_off = MVPP2_PRS_TCAM_EN_OFFS(MVPP2_PRS_TCAM_PORT_BYTE); | |
1108 | ||
1109 | pe->tcam.byte[MVPP2_PRS_TCAM_PORT_BYTE] = 0; | |
1110 | pe->tcam.byte[enable_off] &= ~port_mask; | |
1111 | pe->tcam.byte[enable_off] |= ~ports & MVPP2_PRS_PORT_MASK; | |
1112 | } | |
1113 | ||
1114 | /* Obtain port map from tcam sw entry */ | |
1115 | static unsigned int mvpp2_prs_tcam_port_map_get(struct mvpp2_prs_entry *pe) | |
1116 | { | |
1117 | int enable_off = MVPP2_PRS_TCAM_EN_OFFS(MVPP2_PRS_TCAM_PORT_BYTE); | |
1118 | ||
1119 | return ~(pe->tcam.byte[enable_off]) & MVPP2_PRS_PORT_MASK; | |
1120 | } | |
1121 | ||
1122 | /* Set byte of data and its enable bits in tcam sw entry */ | |
1123 | static void mvpp2_prs_tcam_data_byte_set(struct mvpp2_prs_entry *pe, | |
1124 | unsigned int offs, unsigned char byte, | |
1125 | unsigned char enable) | |
1126 | { | |
1127 | pe->tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE(offs)] = byte; | |
1128 | pe->tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE_EN(offs)] = enable; | |
1129 | } | |
1130 | ||
1131 | /* Get byte of data and its enable bits from tcam sw entry */ | |
1132 | static void mvpp2_prs_tcam_data_byte_get(struct mvpp2_prs_entry *pe, | |
1133 | unsigned int offs, unsigned char *byte, | |
1134 | unsigned char *enable) | |
1135 | { | |
1136 | *byte = pe->tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE(offs)]; | |
1137 | *enable = pe->tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE_EN(offs)]; | |
1138 | } | |
1139 | ||
1140 | /* Compare tcam data bytes with a pattern */ | |
1141 | static bool mvpp2_prs_tcam_data_cmp(struct mvpp2_prs_entry *pe, int offs, | |
1142 | u16 data) | |
1143 | { | |
1144 | int off = MVPP2_PRS_TCAM_DATA_BYTE(offs); | |
1145 | u16 tcam_data; | |
1146 | ||
1147 | tcam_data = (8 << pe->tcam.byte[off + 1]) | pe->tcam.byte[off]; | |
1148 | if (tcam_data != data) | |
1149 | return false; | |
1150 | return true; | |
1151 | } | |
1152 | ||
1153 | /* Update ai bits in tcam sw entry */ | |
1154 | static void mvpp2_prs_tcam_ai_update(struct mvpp2_prs_entry *pe, | |
1155 | unsigned int bits, unsigned int enable) | |
1156 | { | |
1157 | int i, ai_idx = MVPP2_PRS_TCAM_AI_BYTE; | |
1158 | ||
1159 | for (i = 0; i < MVPP2_PRS_AI_BITS; i++) { | |
1160 | ||
1161 | if (!(enable & BIT(i))) | |
1162 | continue; | |
1163 | ||
1164 | if (bits & BIT(i)) | |
1165 | pe->tcam.byte[ai_idx] |= 1 << i; | |
1166 | else | |
1167 | pe->tcam.byte[ai_idx] &= ~(1 << i); | |
1168 | } | |
1169 | ||
1170 | pe->tcam.byte[MVPP2_PRS_TCAM_EN_OFFS(ai_idx)] |= enable; | |
1171 | } | |
1172 | ||
1173 | /* Get ai bits from tcam sw entry */ | |
1174 | static int mvpp2_prs_tcam_ai_get(struct mvpp2_prs_entry *pe) | |
1175 | { | |
1176 | return pe->tcam.byte[MVPP2_PRS_TCAM_AI_BYTE]; | |
1177 | } | |
1178 | ||
1179 | /* Set ethertype in tcam sw entry */ | |
1180 | static void mvpp2_prs_match_etype(struct mvpp2_prs_entry *pe, int offset, | |
1181 | unsigned short ethertype) | |
1182 | { | |
1183 | mvpp2_prs_tcam_data_byte_set(pe, offset + 0, ethertype >> 8, 0xff); | |
1184 | mvpp2_prs_tcam_data_byte_set(pe, offset + 1, ethertype & 0xff, 0xff); | |
1185 | } | |
1186 | ||
1187 | /* Set bits in sram sw entry */ | |
1188 | static void mvpp2_prs_sram_bits_set(struct mvpp2_prs_entry *pe, int bit_num, | |
1189 | int val) | |
1190 | { | |
1191 | pe->sram.byte[MVPP2_BIT_TO_BYTE(bit_num)] |= (val << (bit_num % 8)); | |
1192 | } | |
1193 | ||
1194 | /* Clear bits in sram sw entry */ | |
1195 | static void mvpp2_prs_sram_bits_clear(struct mvpp2_prs_entry *pe, int bit_num, | |
1196 | int val) | |
1197 | { | |
1198 | pe->sram.byte[MVPP2_BIT_TO_BYTE(bit_num)] &= ~(val << (bit_num % 8)); | |
1199 | } | |
1200 | ||
1201 | /* Update ri bits in sram sw entry */ | |
1202 | static void mvpp2_prs_sram_ri_update(struct mvpp2_prs_entry *pe, | |
1203 | unsigned int bits, unsigned int mask) | |
1204 | { | |
1205 | unsigned int i; | |
1206 | ||
1207 | for (i = 0; i < MVPP2_PRS_SRAM_RI_CTRL_BITS; i++) { | |
1208 | int ri_off = MVPP2_PRS_SRAM_RI_OFFS; | |
1209 | ||
1210 | if (!(mask & BIT(i))) | |
1211 | continue; | |
1212 | ||
1213 | if (bits & BIT(i)) | |
1214 | mvpp2_prs_sram_bits_set(pe, ri_off + i, 1); | |
1215 | else | |
1216 | mvpp2_prs_sram_bits_clear(pe, ri_off + i, 1); | |
1217 | ||
1218 | mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_RI_CTRL_OFFS + i, 1); | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | /* Obtain ri bits from sram sw entry */ | |
1223 | static int mvpp2_prs_sram_ri_get(struct mvpp2_prs_entry *pe) | |
1224 | { | |
1225 | return pe->sram.word[MVPP2_PRS_SRAM_RI_WORD]; | |
1226 | } | |
1227 | ||
1228 | /* Update ai bits in sram sw entry */ | |
1229 | static void mvpp2_prs_sram_ai_update(struct mvpp2_prs_entry *pe, | |
1230 | unsigned int bits, unsigned int mask) | |
1231 | { | |
1232 | unsigned int i; | |
1233 | int ai_off = MVPP2_PRS_SRAM_AI_OFFS; | |
1234 | ||
1235 | for (i = 0; i < MVPP2_PRS_SRAM_AI_CTRL_BITS; i++) { | |
1236 | ||
1237 | if (!(mask & BIT(i))) | |
1238 | continue; | |
1239 | ||
1240 | if (bits & BIT(i)) | |
1241 | mvpp2_prs_sram_bits_set(pe, ai_off + i, 1); | |
1242 | else | |
1243 | mvpp2_prs_sram_bits_clear(pe, ai_off + i, 1); | |
1244 | ||
1245 | mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_AI_CTRL_OFFS + i, 1); | |
1246 | } | |
1247 | } | |
1248 | ||
1249 | /* Read ai bits from sram sw entry */ | |
1250 | static int mvpp2_prs_sram_ai_get(struct mvpp2_prs_entry *pe) | |
1251 | { | |
1252 | u8 bits; | |
1253 | int ai_off = MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_AI_OFFS); | |
1254 | int ai_en_off = ai_off + 1; | |
1255 | int ai_shift = MVPP2_PRS_SRAM_AI_OFFS % 8; | |
1256 | ||
1257 | bits = (pe->sram.byte[ai_off] >> ai_shift) | | |
1258 | (pe->sram.byte[ai_en_off] << (8 - ai_shift)); | |
1259 | ||
1260 | return bits; | |
1261 | } | |
1262 | ||
1263 | /* In sram sw entry set lookup ID field of the tcam key to be used in the next | |
1264 | * lookup interation | |
1265 | */ | |
1266 | static void mvpp2_prs_sram_next_lu_set(struct mvpp2_prs_entry *pe, | |
1267 | unsigned int lu) | |
1268 | { | |
1269 | int sram_next_off = MVPP2_PRS_SRAM_NEXT_LU_OFFS; | |
1270 | ||
1271 | mvpp2_prs_sram_bits_clear(pe, sram_next_off, | |
1272 | MVPP2_PRS_SRAM_NEXT_LU_MASK); | |
1273 | mvpp2_prs_sram_bits_set(pe, sram_next_off, lu); | |
1274 | } | |
1275 | ||
1276 | /* In the sram sw entry set sign and value of the next lookup offset | |
1277 | * and the offset value generated to the classifier | |
1278 | */ | |
1279 | static void mvpp2_prs_sram_shift_set(struct mvpp2_prs_entry *pe, int shift, | |
1280 | unsigned int op) | |
1281 | { | |
1282 | /* Set sign */ | |
1283 | if (shift < 0) { | |
1284 | mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_SHIFT_SIGN_BIT, 1); | |
1285 | shift = 0 - shift; | |
1286 | } else { | |
1287 | mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_SHIFT_SIGN_BIT, 1); | |
1288 | } | |
1289 | ||
1290 | /* Set value */ | |
1291 | pe->sram.byte[MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_SHIFT_OFFS)] = | |
1292 | (unsigned char)shift; | |
1293 | ||
1294 | /* Reset and set operation */ | |
1295 | mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_SHIFT_OFFS, | |
1296 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_MASK); | |
1297 | mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_OP_SEL_SHIFT_OFFS, op); | |
1298 | ||
1299 | /* Set base offset as current */ | |
1300 | mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_BASE_OFFS, 1); | |
1301 | } | |
1302 | ||
1303 | /* In the sram sw entry set sign and value of the user defined offset | |
1304 | * generated to the classifier | |
1305 | */ | |
1306 | static void mvpp2_prs_sram_offset_set(struct mvpp2_prs_entry *pe, | |
1307 | unsigned int type, int offset, | |
1308 | unsigned int op) | |
1309 | { | |
1310 | /* Set sign */ | |
1311 | if (offset < 0) { | |
1312 | mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_UDF_SIGN_BIT, 1); | |
1313 | offset = 0 - offset; | |
1314 | } else { | |
1315 | mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_UDF_SIGN_BIT, 1); | |
1316 | } | |
1317 | ||
1318 | /* Set value */ | |
1319 | mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_UDF_OFFS, | |
1320 | MVPP2_PRS_SRAM_UDF_MASK); | |
1321 | mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_UDF_OFFS, offset); | |
1322 | pe->sram.byte[MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_UDF_OFFS + | |
1323 | MVPP2_PRS_SRAM_UDF_BITS)] &= | |
1324 | ~(MVPP2_PRS_SRAM_UDF_MASK >> (8 - (MVPP2_PRS_SRAM_UDF_OFFS % 8))); | |
1325 | pe->sram.byte[MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_UDF_OFFS + | |
1326 | MVPP2_PRS_SRAM_UDF_BITS)] |= | |
1327 | (offset >> (8 - (MVPP2_PRS_SRAM_UDF_OFFS % 8))); | |
1328 | ||
1329 | /* Set offset type */ | |
1330 | mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_UDF_TYPE_OFFS, | |
1331 | MVPP2_PRS_SRAM_UDF_TYPE_MASK); | |
1332 | mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_UDF_TYPE_OFFS, type); | |
1333 | ||
1334 | /* Set offset operation */ | |
1335 | mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS, | |
1336 | MVPP2_PRS_SRAM_OP_SEL_UDF_MASK); | |
1337 | mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS, op); | |
1338 | ||
1339 | pe->sram.byte[MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS + | |
1340 | MVPP2_PRS_SRAM_OP_SEL_UDF_BITS)] &= | |
1341 | ~(MVPP2_PRS_SRAM_OP_SEL_UDF_MASK >> | |
1342 | (8 - (MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS % 8))); | |
1343 | ||
1344 | pe->sram.byte[MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS + | |
1345 | MVPP2_PRS_SRAM_OP_SEL_UDF_BITS)] |= | |
1346 | (op >> (8 - (MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS % 8))); | |
1347 | ||
1348 | /* Set base offset as current */ | |
1349 | mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_BASE_OFFS, 1); | |
1350 | } | |
1351 | ||
1352 | /* Find parser flow entry */ | |
1353 | static struct mvpp2_prs_entry *mvpp2_prs_flow_find(struct mvpp2 *priv, int flow) | |
1354 | { | |
1355 | struct mvpp2_prs_entry *pe; | |
1356 | int tid; | |
1357 | ||
1358 | pe = kzalloc(sizeof(*pe), GFP_KERNEL); | |
1359 | if (!pe) | |
1360 | return NULL; | |
1361 | mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_FLOWS); | |
1362 | ||
1363 | /* Go through the all entires with MVPP2_PRS_LU_FLOWS */ | |
1364 | for (tid = MVPP2_PRS_TCAM_SRAM_SIZE - 1; tid >= 0; tid--) { | |
1365 | u8 bits; | |
1366 | ||
1367 | if (!priv->prs_shadow[tid].valid || | |
1368 | priv->prs_shadow[tid].lu != MVPP2_PRS_LU_FLOWS) | |
1369 | continue; | |
1370 | ||
1371 | pe->index = tid; | |
1372 | mvpp2_prs_hw_read(priv, pe); | |
1373 | bits = mvpp2_prs_sram_ai_get(pe); | |
1374 | ||
1375 | /* Sram store classification lookup ID in AI bits [5:0] */ | |
1376 | if ((bits & MVPP2_PRS_FLOW_ID_MASK) == flow) | |
1377 | return pe; | |
1378 | } | |
1379 | kfree(pe); | |
1380 | ||
1381 | return NULL; | |
1382 | } | |
1383 | ||
1384 | /* Return first free tcam index, seeking from start to end */ | |
1385 | static int mvpp2_prs_tcam_first_free(struct mvpp2 *priv, unsigned char start, | |
1386 | unsigned char end) | |
1387 | { | |
1388 | int tid; | |
1389 | ||
1390 | if (start > end) | |
1391 | swap(start, end); | |
1392 | ||
1393 | if (end >= MVPP2_PRS_TCAM_SRAM_SIZE) | |
1394 | end = MVPP2_PRS_TCAM_SRAM_SIZE - 1; | |
1395 | ||
1396 | for (tid = start; tid <= end; tid++) { | |
1397 | if (!priv->prs_shadow[tid].valid) | |
1398 | return tid; | |
1399 | } | |
1400 | ||
1401 | return -EINVAL; | |
1402 | } | |
1403 | ||
1404 | /* Enable/disable dropping all mac da's */ | |
1405 | static void mvpp2_prs_mac_drop_all_set(struct mvpp2 *priv, int port, bool add) | |
1406 | { | |
1407 | struct mvpp2_prs_entry pe; | |
1408 | ||
1409 | if (priv->prs_shadow[MVPP2_PE_DROP_ALL].valid) { | |
1410 | /* Entry exist - update port only */ | |
1411 | pe.index = MVPP2_PE_DROP_ALL; | |
1412 | mvpp2_prs_hw_read(priv, &pe); | |
1413 | } else { | |
1414 | /* Entry doesn't exist - create new */ | |
1415 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
1416 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC); | |
1417 | pe.index = MVPP2_PE_DROP_ALL; | |
1418 | ||
1419 | /* Non-promiscuous mode for all ports - DROP unknown packets */ | |
1420 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_DROP_MASK, | |
1421 | MVPP2_PRS_RI_DROP_MASK); | |
1422 | ||
1423 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
1424 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
1425 | ||
1426 | /* Update shadow table */ | |
1427 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC); | |
1428 | ||
1429 | /* Mask all ports */ | |
1430 | mvpp2_prs_tcam_port_map_set(&pe, 0); | |
1431 | } | |
1432 | ||
1433 | /* Update port mask */ | |
1434 | mvpp2_prs_tcam_port_set(&pe, port, add); | |
1435 | ||
1436 | mvpp2_prs_hw_write(priv, &pe); | |
1437 | } | |
1438 | ||
1439 | /* Set port to promiscuous mode */ | |
1440 | static void mvpp2_prs_mac_promisc_set(struct mvpp2 *priv, int port, bool add) | |
1441 | { | |
1442 | struct mvpp2_prs_entry pe; | |
1443 | ||
dbedd44e | 1444 | /* Promiscuous mode - Accept unknown packets */ |
3f518509 MW |
1445 | |
1446 | if (priv->prs_shadow[MVPP2_PE_MAC_PROMISCUOUS].valid) { | |
1447 | /* Entry exist - update port only */ | |
1448 | pe.index = MVPP2_PE_MAC_PROMISCUOUS; | |
1449 | mvpp2_prs_hw_read(priv, &pe); | |
1450 | } else { | |
1451 | /* Entry doesn't exist - create new */ | |
1452 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
1453 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC); | |
1454 | pe.index = MVPP2_PE_MAC_PROMISCUOUS; | |
1455 | ||
1456 | /* Continue - set next lookup */ | |
1457 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_DSA); | |
1458 | ||
1459 | /* Set result info bits */ | |
1460 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L2_UCAST, | |
1461 | MVPP2_PRS_RI_L2_CAST_MASK); | |
1462 | ||
1463 | /* Shift to ethertype */ | |
1464 | mvpp2_prs_sram_shift_set(&pe, 2 * ETH_ALEN, | |
1465 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
1466 | ||
1467 | /* Mask all ports */ | |
1468 | mvpp2_prs_tcam_port_map_set(&pe, 0); | |
1469 | ||
1470 | /* Update shadow table */ | |
1471 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC); | |
1472 | } | |
1473 | ||
1474 | /* Update port mask */ | |
1475 | mvpp2_prs_tcam_port_set(&pe, port, add); | |
1476 | ||
1477 | mvpp2_prs_hw_write(priv, &pe); | |
1478 | } | |
1479 | ||
1480 | /* Accept multicast */ | |
1481 | static void mvpp2_prs_mac_multi_set(struct mvpp2 *priv, int port, int index, | |
1482 | bool add) | |
1483 | { | |
1484 | struct mvpp2_prs_entry pe; | |
1485 | unsigned char da_mc; | |
1486 | ||
1487 | /* Ethernet multicast address first byte is | |
1488 | * 0x01 for IPv4 and 0x33 for IPv6 | |
1489 | */ | |
1490 | da_mc = (index == MVPP2_PE_MAC_MC_ALL) ? 0x01 : 0x33; | |
1491 | ||
1492 | if (priv->prs_shadow[index].valid) { | |
1493 | /* Entry exist - update port only */ | |
1494 | pe.index = index; | |
1495 | mvpp2_prs_hw_read(priv, &pe); | |
1496 | } else { | |
1497 | /* Entry doesn't exist - create new */ | |
1498 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
1499 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC); | |
1500 | pe.index = index; | |
1501 | ||
1502 | /* Continue - set next lookup */ | |
1503 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_DSA); | |
1504 | ||
1505 | /* Set result info bits */ | |
1506 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L2_MCAST, | |
1507 | MVPP2_PRS_RI_L2_CAST_MASK); | |
1508 | ||
1509 | /* Update tcam entry data first byte */ | |
1510 | mvpp2_prs_tcam_data_byte_set(&pe, 0, da_mc, 0xff); | |
1511 | ||
1512 | /* Shift to ethertype */ | |
1513 | mvpp2_prs_sram_shift_set(&pe, 2 * ETH_ALEN, | |
1514 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
1515 | ||
1516 | /* Mask all ports */ | |
1517 | mvpp2_prs_tcam_port_map_set(&pe, 0); | |
1518 | ||
1519 | /* Update shadow table */ | |
1520 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC); | |
1521 | } | |
1522 | ||
1523 | /* Update port mask */ | |
1524 | mvpp2_prs_tcam_port_set(&pe, port, add); | |
1525 | ||
1526 | mvpp2_prs_hw_write(priv, &pe); | |
1527 | } | |
1528 | ||
1529 | /* Set entry for dsa packets */ | |
1530 | static void mvpp2_prs_dsa_tag_set(struct mvpp2 *priv, int port, bool add, | |
1531 | bool tagged, bool extend) | |
1532 | { | |
1533 | struct mvpp2_prs_entry pe; | |
1534 | int tid, shift; | |
1535 | ||
1536 | if (extend) { | |
1537 | tid = tagged ? MVPP2_PE_EDSA_TAGGED : MVPP2_PE_EDSA_UNTAGGED; | |
1538 | shift = 8; | |
1539 | } else { | |
1540 | tid = tagged ? MVPP2_PE_DSA_TAGGED : MVPP2_PE_DSA_UNTAGGED; | |
1541 | shift = 4; | |
1542 | } | |
1543 | ||
1544 | if (priv->prs_shadow[tid].valid) { | |
1545 | /* Entry exist - update port only */ | |
1546 | pe.index = tid; | |
1547 | mvpp2_prs_hw_read(priv, &pe); | |
1548 | } else { | |
1549 | /* Entry doesn't exist - create new */ | |
1550 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
1551 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_DSA); | |
1552 | pe.index = tid; | |
1553 | ||
1554 | /* Shift 4 bytes if DSA tag or 8 bytes in case of EDSA tag*/ | |
1555 | mvpp2_prs_sram_shift_set(&pe, shift, | |
1556 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
1557 | ||
1558 | /* Update shadow table */ | |
1559 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_DSA); | |
1560 | ||
1561 | if (tagged) { | |
1562 | /* Set tagged bit in DSA tag */ | |
1563 | mvpp2_prs_tcam_data_byte_set(&pe, 0, | |
1564 | MVPP2_PRS_TCAM_DSA_TAGGED_BIT, | |
1565 | MVPP2_PRS_TCAM_DSA_TAGGED_BIT); | |
1566 | /* Clear all ai bits for next iteration */ | |
1567 | mvpp2_prs_sram_ai_update(&pe, 0, | |
1568 | MVPP2_PRS_SRAM_AI_MASK); | |
1569 | /* If packet is tagged continue check vlans */ | |
1570 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VLAN); | |
1571 | } else { | |
1572 | /* Set result info bits to 'no vlans' */ | |
1573 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_NONE, | |
1574 | MVPP2_PRS_RI_VLAN_MASK); | |
1575 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2); | |
1576 | } | |
1577 | ||
1578 | /* Mask all ports */ | |
1579 | mvpp2_prs_tcam_port_map_set(&pe, 0); | |
1580 | } | |
1581 | ||
1582 | /* Update port mask */ | |
1583 | mvpp2_prs_tcam_port_set(&pe, port, add); | |
1584 | ||
1585 | mvpp2_prs_hw_write(priv, &pe); | |
1586 | } | |
1587 | ||
1588 | /* Set entry for dsa ethertype */ | |
1589 | static void mvpp2_prs_dsa_tag_ethertype_set(struct mvpp2 *priv, int port, | |
1590 | bool add, bool tagged, bool extend) | |
1591 | { | |
1592 | struct mvpp2_prs_entry pe; | |
1593 | int tid, shift, port_mask; | |
1594 | ||
1595 | if (extend) { | |
1596 | tid = tagged ? MVPP2_PE_ETYPE_EDSA_TAGGED : | |
1597 | MVPP2_PE_ETYPE_EDSA_UNTAGGED; | |
1598 | port_mask = 0; | |
1599 | shift = 8; | |
1600 | } else { | |
1601 | tid = tagged ? MVPP2_PE_ETYPE_DSA_TAGGED : | |
1602 | MVPP2_PE_ETYPE_DSA_UNTAGGED; | |
1603 | port_mask = MVPP2_PRS_PORT_MASK; | |
1604 | shift = 4; | |
1605 | } | |
1606 | ||
1607 | if (priv->prs_shadow[tid].valid) { | |
1608 | /* Entry exist - update port only */ | |
1609 | pe.index = tid; | |
1610 | mvpp2_prs_hw_read(priv, &pe); | |
1611 | } else { | |
1612 | /* Entry doesn't exist - create new */ | |
1613 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
1614 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_DSA); | |
1615 | pe.index = tid; | |
1616 | ||
1617 | /* Set ethertype */ | |
1618 | mvpp2_prs_match_etype(&pe, 0, ETH_P_EDSA); | |
1619 | mvpp2_prs_match_etype(&pe, 2, 0); | |
1620 | ||
1621 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_DSA_MASK, | |
1622 | MVPP2_PRS_RI_DSA_MASK); | |
1623 | /* Shift ethertype + 2 byte reserved + tag*/ | |
1624 | mvpp2_prs_sram_shift_set(&pe, 2 + MVPP2_ETH_TYPE_LEN + shift, | |
1625 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
1626 | ||
1627 | /* Update shadow table */ | |
1628 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_DSA); | |
1629 | ||
1630 | if (tagged) { | |
1631 | /* Set tagged bit in DSA tag */ | |
1632 | mvpp2_prs_tcam_data_byte_set(&pe, | |
1633 | MVPP2_ETH_TYPE_LEN + 2 + 3, | |
1634 | MVPP2_PRS_TCAM_DSA_TAGGED_BIT, | |
1635 | MVPP2_PRS_TCAM_DSA_TAGGED_BIT); | |
1636 | /* Clear all ai bits for next iteration */ | |
1637 | mvpp2_prs_sram_ai_update(&pe, 0, | |
1638 | MVPP2_PRS_SRAM_AI_MASK); | |
1639 | /* If packet is tagged continue check vlans */ | |
1640 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VLAN); | |
1641 | } else { | |
1642 | /* Set result info bits to 'no vlans' */ | |
1643 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_NONE, | |
1644 | MVPP2_PRS_RI_VLAN_MASK); | |
1645 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2); | |
1646 | } | |
1647 | /* Mask/unmask all ports, depending on dsa type */ | |
1648 | mvpp2_prs_tcam_port_map_set(&pe, port_mask); | |
1649 | } | |
1650 | ||
1651 | /* Update port mask */ | |
1652 | mvpp2_prs_tcam_port_set(&pe, port, add); | |
1653 | ||
1654 | mvpp2_prs_hw_write(priv, &pe); | |
1655 | } | |
1656 | ||
1657 | /* Search for existing single/triple vlan entry */ | |
1658 | static struct mvpp2_prs_entry *mvpp2_prs_vlan_find(struct mvpp2 *priv, | |
1659 | unsigned short tpid, int ai) | |
1660 | { | |
1661 | struct mvpp2_prs_entry *pe; | |
1662 | int tid; | |
1663 | ||
1664 | pe = kzalloc(sizeof(*pe), GFP_KERNEL); | |
1665 | if (!pe) | |
1666 | return NULL; | |
1667 | mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_VLAN); | |
1668 | ||
1669 | /* Go through the all entries with MVPP2_PRS_LU_VLAN */ | |
1670 | for (tid = MVPP2_PE_FIRST_FREE_TID; | |
1671 | tid <= MVPP2_PE_LAST_FREE_TID; tid++) { | |
1672 | unsigned int ri_bits, ai_bits; | |
1673 | bool match; | |
1674 | ||
1675 | if (!priv->prs_shadow[tid].valid || | |
1676 | priv->prs_shadow[tid].lu != MVPP2_PRS_LU_VLAN) | |
1677 | continue; | |
1678 | ||
1679 | pe->index = tid; | |
1680 | ||
1681 | mvpp2_prs_hw_read(priv, pe); | |
1682 | match = mvpp2_prs_tcam_data_cmp(pe, 0, swab16(tpid)); | |
1683 | if (!match) | |
1684 | continue; | |
1685 | ||
1686 | /* Get vlan type */ | |
1687 | ri_bits = mvpp2_prs_sram_ri_get(pe); | |
1688 | ri_bits &= MVPP2_PRS_RI_VLAN_MASK; | |
1689 | ||
1690 | /* Get current ai value from tcam */ | |
1691 | ai_bits = mvpp2_prs_tcam_ai_get(pe); | |
1692 | /* Clear double vlan bit */ | |
1693 | ai_bits &= ~MVPP2_PRS_DBL_VLAN_AI_BIT; | |
1694 | ||
1695 | if (ai != ai_bits) | |
1696 | continue; | |
1697 | ||
1698 | if (ri_bits == MVPP2_PRS_RI_VLAN_SINGLE || | |
1699 | ri_bits == MVPP2_PRS_RI_VLAN_TRIPLE) | |
1700 | return pe; | |
1701 | } | |
1702 | kfree(pe); | |
1703 | ||
1704 | return NULL; | |
1705 | } | |
1706 | ||
1707 | /* Add/update single/triple vlan entry */ | |
1708 | static int mvpp2_prs_vlan_add(struct mvpp2 *priv, unsigned short tpid, int ai, | |
1709 | unsigned int port_map) | |
1710 | { | |
1711 | struct mvpp2_prs_entry *pe; | |
1712 | int tid_aux, tid; | |
43737473 | 1713 | int ret = 0; |
3f518509 MW |
1714 | |
1715 | pe = mvpp2_prs_vlan_find(priv, tpid, ai); | |
1716 | ||
1717 | if (!pe) { | |
1718 | /* Create new tcam entry */ | |
1719 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_LAST_FREE_TID, | |
1720 | MVPP2_PE_FIRST_FREE_TID); | |
1721 | if (tid < 0) | |
1722 | return tid; | |
1723 | ||
1724 | pe = kzalloc(sizeof(*pe), GFP_KERNEL); | |
1725 | if (!pe) | |
1726 | return -ENOMEM; | |
1727 | ||
1728 | /* Get last double vlan tid */ | |
1729 | for (tid_aux = MVPP2_PE_LAST_FREE_TID; | |
1730 | tid_aux >= MVPP2_PE_FIRST_FREE_TID; tid_aux--) { | |
1731 | unsigned int ri_bits; | |
1732 | ||
1733 | if (!priv->prs_shadow[tid_aux].valid || | |
1734 | priv->prs_shadow[tid_aux].lu != MVPP2_PRS_LU_VLAN) | |
1735 | continue; | |
1736 | ||
1737 | pe->index = tid_aux; | |
1738 | mvpp2_prs_hw_read(priv, pe); | |
1739 | ri_bits = mvpp2_prs_sram_ri_get(pe); | |
1740 | if ((ri_bits & MVPP2_PRS_RI_VLAN_MASK) == | |
1741 | MVPP2_PRS_RI_VLAN_DOUBLE) | |
1742 | break; | |
1743 | } | |
1744 | ||
43737473 SM |
1745 | if (tid <= tid_aux) { |
1746 | ret = -EINVAL; | |
1747 | goto error; | |
1748 | } | |
3f518509 MW |
1749 | |
1750 | memset(pe, 0 , sizeof(struct mvpp2_prs_entry)); | |
1751 | mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_VLAN); | |
1752 | pe->index = tid; | |
1753 | ||
1754 | mvpp2_prs_match_etype(pe, 0, tpid); | |
1755 | ||
1756 | mvpp2_prs_sram_next_lu_set(pe, MVPP2_PRS_LU_L2); | |
1757 | /* Shift 4 bytes - skip 1 vlan tag */ | |
1758 | mvpp2_prs_sram_shift_set(pe, MVPP2_VLAN_TAG_LEN, | |
1759 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
1760 | /* Clear all ai bits for next iteration */ | |
1761 | mvpp2_prs_sram_ai_update(pe, 0, MVPP2_PRS_SRAM_AI_MASK); | |
1762 | ||
1763 | if (ai == MVPP2_PRS_SINGLE_VLAN_AI) { | |
1764 | mvpp2_prs_sram_ri_update(pe, MVPP2_PRS_RI_VLAN_SINGLE, | |
1765 | MVPP2_PRS_RI_VLAN_MASK); | |
1766 | } else { | |
1767 | ai |= MVPP2_PRS_DBL_VLAN_AI_BIT; | |
1768 | mvpp2_prs_sram_ri_update(pe, MVPP2_PRS_RI_VLAN_TRIPLE, | |
1769 | MVPP2_PRS_RI_VLAN_MASK); | |
1770 | } | |
1771 | mvpp2_prs_tcam_ai_update(pe, ai, MVPP2_PRS_SRAM_AI_MASK); | |
1772 | ||
1773 | mvpp2_prs_shadow_set(priv, pe->index, MVPP2_PRS_LU_VLAN); | |
1774 | } | |
1775 | /* Update ports' mask */ | |
1776 | mvpp2_prs_tcam_port_map_set(pe, port_map); | |
1777 | ||
1778 | mvpp2_prs_hw_write(priv, pe); | |
1779 | ||
43737473 | 1780 | error: |
3f518509 MW |
1781 | kfree(pe); |
1782 | ||
43737473 | 1783 | return ret; |
3f518509 MW |
1784 | } |
1785 | ||
1786 | /* Get first free double vlan ai number */ | |
1787 | static int mvpp2_prs_double_vlan_ai_free_get(struct mvpp2 *priv) | |
1788 | { | |
1789 | int i; | |
1790 | ||
1791 | for (i = 1; i < MVPP2_PRS_DBL_VLANS_MAX; i++) { | |
1792 | if (!priv->prs_double_vlans[i]) | |
1793 | return i; | |
1794 | } | |
1795 | ||
1796 | return -EINVAL; | |
1797 | } | |
1798 | ||
1799 | /* Search for existing double vlan entry */ | |
1800 | static struct mvpp2_prs_entry *mvpp2_prs_double_vlan_find(struct mvpp2 *priv, | |
1801 | unsigned short tpid1, | |
1802 | unsigned short tpid2) | |
1803 | { | |
1804 | struct mvpp2_prs_entry *pe; | |
1805 | int tid; | |
1806 | ||
1807 | pe = kzalloc(sizeof(*pe), GFP_KERNEL); | |
1808 | if (!pe) | |
1809 | return NULL; | |
1810 | mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_VLAN); | |
1811 | ||
1812 | /* Go through the all entries with MVPP2_PRS_LU_VLAN */ | |
1813 | for (tid = MVPP2_PE_FIRST_FREE_TID; | |
1814 | tid <= MVPP2_PE_LAST_FREE_TID; tid++) { | |
1815 | unsigned int ri_mask; | |
1816 | bool match; | |
1817 | ||
1818 | if (!priv->prs_shadow[tid].valid || | |
1819 | priv->prs_shadow[tid].lu != MVPP2_PRS_LU_VLAN) | |
1820 | continue; | |
1821 | ||
1822 | pe->index = tid; | |
1823 | mvpp2_prs_hw_read(priv, pe); | |
1824 | ||
1825 | match = mvpp2_prs_tcam_data_cmp(pe, 0, swab16(tpid1)) | |
1826 | && mvpp2_prs_tcam_data_cmp(pe, 4, swab16(tpid2)); | |
1827 | ||
1828 | if (!match) | |
1829 | continue; | |
1830 | ||
1831 | ri_mask = mvpp2_prs_sram_ri_get(pe) & MVPP2_PRS_RI_VLAN_MASK; | |
1832 | if (ri_mask == MVPP2_PRS_RI_VLAN_DOUBLE) | |
1833 | return pe; | |
1834 | } | |
1835 | kfree(pe); | |
1836 | ||
1837 | return NULL; | |
1838 | } | |
1839 | ||
1840 | /* Add or update double vlan entry */ | |
1841 | static int mvpp2_prs_double_vlan_add(struct mvpp2 *priv, unsigned short tpid1, | |
1842 | unsigned short tpid2, | |
1843 | unsigned int port_map) | |
1844 | { | |
1845 | struct mvpp2_prs_entry *pe; | |
43737473 | 1846 | int tid_aux, tid, ai, ret = 0; |
3f518509 MW |
1847 | |
1848 | pe = mvpp2_prs_double_vlan_find(priv, tpid1, tpid2); | |
1849 | ||
1850 | if (!pe) { | |
1851 | /* Create new tcam entry */ | |
1852 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
1853 | MVPP2_PE_LAST_FREE_TID); | |
1854 | if (tid < 0) | |
1855 | return tid; | |
1856 | ||
1857 | pe = kzalloc(sizeof(*pe), GFP_KERNEL); | |
1858 | if (!pe) | |
1859 | return -ENOMEM; | |
1860 | ||
1861 | /* Set ai value for new double vlan entry */ | |
1862 | ai = mvpp2_prs_double_vlan_ai_free_get(priv); | |
43737473 SM |
1863 | if (ai < 0) { |
1864 | ret = ai; | |
1865 | goto error; | |
1866 | } | |
3f518509 MW |
1867 | |
1868 | /* Get first single/triple vlan tid */ | |
1869 | for (tid_aux = MVPP2_PE_FIRST_FREE_TID; | |
1870 | tid_aux <= MVPP2_PE_LAST_FREE_TID; tid_aux++) { | |
1871 | unsigned int ri_bits; | |
1872 | ||
1873 | if (!priv->prs_shadow[tid_aux].valid || | |
1874 | priv->prs_shadow[tid_aux].lu != MVPP2_PRS_LU_VLAN) | |
1875 | continue; | |
1876 | ||
1877 | pe->index = tid_aux; | |
1878 | mvpp2_prs_hw_read(priv, pe); | |
1879 | ri_bits = mvpp2_prs_sram_ri_get(pe); | |
1880 | ri_bits &= MVPP2_PRS_RI_VLAN_MASK; | |
1881 | if (ri_bits == MVPP2_PRS_RI_VLAN_SINGLE || | |
1882 | ri_bits == MVPP2_PRS_RI_VLAN_TRIPLE) | |
1883 | break; | |
1884 | } | |
1885 | ||
43737473 SM |
1886 | if (tid >= tid_aux) { |
1887 | ret = -ERANGE; | |
1888 | goto error; | |
1889 | } | |
3f518509 MW |
1890 | |
1891 | memset(pe, 0, sizeof(struct mvpp2_prs_entry)); | |
1892 | mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_VLAN); | |
1893 | pe->index = tid; | |
1894 | ||
1895 | priv->prs_double_vlans[ai] = true; | |
1896 | ||
1897 | mvpp2_prs_match_etype(pe, 0, tpid1); | |
1898 | mvpp2_prs_match_etype(pe, 4, tpid2); | |
1899 | ||
1900 | mvpp2_prs_sram_next_lu_set(pe, MVPP2_PRS_LU_VLAN); | |
1901 | /* Shift 8 bytes - skip 2 vlan tags */ | |
1902 | mvpp2_prs_sram_shift_set(pe, 2 * MVPP2_VLAN_TAG_LEN, | |
1903 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
1904 | mvpp2_prs_sram_ri_update(pe, MVPP2_PRS_RI_VLAN_DOUBLE, | |
1905 | MVPP2_PRS_RI_VLAN_MASK); | |
1906 | mvpp2_prs_sram_ai_update(pe, ai | MVPP2_PRS_DBL_VLAN_AI_BIT, | |
1907 | MVPP2_PRS_SRAM_AI_MASK); | |
1908 | ||
1909 | mvpp2_prs_shadow_set(priv, pe->index, MVPP2_PRS_LU_VLAN); | |
1910 | } | |
1911 | ||
1912 | /* Update ports' mask */ | |
1913 | mvpp2_prs_tcam_port_map_set(pe, port_map); | |
1914 | mvpp2_prs_hw_write(priv, pe); | |
1915 | ||
43737473 | 1916 | error: |
3f518509 | 1917 | kfree(pe); |
43737473 | 1918 | return ret; |
3f518509 MW |
1919 | } |
1920 | ||
1921 | /* IPv4 header parsing for fragmentation and L4 offset */ | |
1922 | static int mvpp2_prs_ip4_proto(struct mvpp2 *priv, unsigned short proto, | |
1923 | unsigned int ri, unsigned int ri_mask) | |
1924 | { | |
1925 | struct mvpp2_prs_entry pe; | |
1926 | int tid; | |
1927 | ||
1928 | if ((proto != IPPROTO_TCP) && (proto != IPPROTO_UDP) && | |
1929 | (proto != IPPROTO_IGMP)) | |
1930 | return -EINVAL; | |
1931 | ||
1932 | /* Fragmented packet */ | |
1933 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
1934 | MVPP2_PE_LAST_FREE_TID); | |
1935 | if (tid < 0) | |
1936 | return tid; | |
1937 | ||
1938 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
1939 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4); | |
1940 | pe.index = tid; | |
1941 | ||
1942 | /* Set next lu to IPv4 */ | |
1943 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4); | |
1944 | mvpp2_prs_sram_shift_set(&pe, 12, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
1945 | /* Set L4 offset */ | |
1946 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4, | |
1947 | sizeof(struct iphdr) - 4, | |
1948 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
1949 | mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT, | |
1950 | MVPP2_PRS_IPV4_DIP_AI_BIT); | |
1951 | mvpp2_prs_sram_ri_update(&pe, ri | MVPP2_PRS_RI_IP_FRAG_MASK, | |
1952 | ri_mask | MVPP2_PRS_RI_IP_FRAG_MASK); | |
1953 | ||
1954 | mvpp2_prs_tcam_data_byte_set(&pe, 5, proto, MVPP2_PRS_TCAM_PROTO_MASK); | |
1955 | mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV4_DIP_AI_BIT); | |
1956 | /* Unmask all ports */ | |
1957 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
1958 | ||
1959 | /* Update shadow table and hw entry */ | |
1960 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4); | |
1961 | mvpp2_prs_hw_write(priv, &pe); | |
1962 | ||
1963 | /* Not fragmented packet */ | |
1964 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
1965 | MVPP2_PE_LAST_FREE_TID); | |
1966 | if (tid < 0) | |
1967 | return tid; | |
1968 | ||
1969 | pe.index = tid; | |
1970 | /* Clear ri before updating */ | |
1971 | pe.sram.word[MVPP2_PRS_SRAM_RI_WORD] = 0x0; | |
1972 | pe.sram.word[MVPP2_PRS_SRAM_RI_CTRL_WORD] = 0x0; | |
1973 | mvpp2_prs_sram_ri_update(&pe, ri, ri_mask); | |
1974 | ||
1975 | mvpp2_prs_tcam_data_byte_set(&pe, 2, 0x00, MVPP2_PRS_TCAM_PROTO_MASK_L); | |
1976 | mvpp2_prs_tcam_data_byte_set(&pe, 3, 0x00, MVPP2_PRS_TCAM_PROTO_MASK); | |
1977 | ||
1978 | /* Update shadow table and hw entry */ | |
1979 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4); | |
1980 | mvpp2_prs_hw_write(priv, &pe); | |
1981 | ||
1982 | return 0; | |
1983 | } | |
1984 | ||
1985 | /* IPv4 L3 multicast or broadcast */ | |
1986 | static int mvpp2_prs_ip4_cast(struct mvpp2 *priv, unsigned short l3_cast) | |
1987 | { | |
1988 | struct mvpp2_prs_entry pe; | |
1989 | int mask, tid; | |
1990 | ||
1991 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
1992 | MVPP2_PE_LAST_FREE_TID); | |
1993 | if (tid < 0) | |
1994 | return tid; | |
1995 | ||
1996 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
1997 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4); | |
1998 | pe.index = tid; | |
1999 | ||
2000 | switch (l3_cast) { | |
2001 | case MVPP2_PRS_L3_MULTI_CAST: | |
2002 | mvpp2_prs_tcam_data_byte_set(&pe, 0, MVPP2_PRS_IPV4_MC, | |
2003 | MVPP2_PRS_IPV4_MC_MASK); | |
2004 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_MCAST, | |
2005 | MVPP2_PRS_RI_L3_ADDR_MASK); | |
2006 | break; | |
2007 | case MVPP2_PRS_L3_BROAD_CAST: | |
2008 | mask = MVPP2_PRS_IPV4_BC_MASK; | |
2009 | mvpp2_prs_tcam_data_byte_set(&pe, 0, mask, mask); | |
2010 | mvpp2_prs_tcam_data_byte_set(&pe, 1, mask, mask); | |
2011 | mvpp2_prs_tcam_data_byte_set(&pe, 2, mask, mask); | |
2012 | mvpp2_prs_tcam_data_byte_set(&pe, 3, mask, mask); | |
2013 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_BCAST, | |
2014 | MVPP2_PRS_RI_L3_ADDR_MASK); | |
2015 | break; | |
2016 | default: | |
2017 | return -EINVAL; | |
2018 | } | |
2019 | ||
2020 | /* Finished: go to flowid generation */ | |
2021 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2022 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
2023 | ||
2024 | mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT, | |
2025 | MVPP2_PRS_IPV4_DIP_AI_BIT); | |
2026 | /* Unmask all ports */ | |
2027 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2028 | ||
2029 | /* Update shadow table and hw entry */ | |
2030 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4); | |
2031 | mvpp2_prs_hw_write(priv, &pe); | |
2032 | ||
2033 | return 0; | |
2034 | } | |
2035 | ||
2036 | /* Set entries for protocols over IPv6 */ | |
2037 | static int mvpp2_prs_ip6_proto(struct mvpp2 *priv, unsigned short proto, | |
2038 | unsigned int ri, unsigned int ri_mask) | |
2039 | { | |
2040 | struct mvpp2_prs_entry pe; | |
2041 | int tid; | |
2042 | ||
2043 | if ((proto != IPPROTO_TCP) && (proto != IPPROTO_UDP) && | |
2044 | (proto != IPPROTO_ICMPV6) && (proto != IPPROTO_IPIP)) | |
2045 | return -EINVAL; | |
2046 | ||
2047 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2048 | MVPP2_PE_LAST_FREE_TID); | |
2049 | if (tid < 0) | |
2050 | return tid; | |
2051 | ||
2052 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2053 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6); | |
2054 | pe.index = tid; | |
2055 | ||
2056 | /* Finished: go to flowid generation */ | |
2057 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2058 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
2059 | mvpp2_prs_sram_ri_update(&pe, ri, ri_mask); | |
2060 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4, | |
2061 | sizeof(struct ipv6hdr) - 6, | |
2062 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
2063 | ||
2064 | mvpp2_prs_tcam_data_byte_set(&pe, 0, proto, MVPP2_PRS_TCAM_PROTO_MASK); | |
2065 | mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT, | |
2066 | MVPP2_PRS_IPV6_NO_EXT_AI_BIT); | |
2067 | /* Unmask all ports */ | |
2068 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2069 | ||
2070 | /* Write HW */ | |
2071 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP6); | |
2072 | mvpp2_prs_hw_write(priv, &pe); | |
2073 | ||
2074 | return 0; | |
2075 | } | |
2076 | ||
2077 | /* IPv6 L3 multicast entry */ | |
2078 | static int mvpp2_prs_ip6_cast(struct mvpp2 *priv, unsigned short l3_cast) | |
2079 | { | |
2080 | struct mvpp2_prs_entry pe; | |
2081 | int tid; | |
2082 | ||
2083 | if (l3_cast != MVPP2_PRS_L3_MULTI_CAST) | |
2084 | return -EINVAL; | |
2085 | ||
2086 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2087 | MVPP2_PE_LAST_FREE_TID); | |
2088 | if (tid < 0) | |
2089 | return tid; | |
2090 | ||
2091 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2092 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6); | |
2093 | pe.index = tid; | |
2094 | ||
2095 | /* Finished: go to flowid generation */ | |
2096 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6); | |
2097 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_MCAST, | |
2098 | MVPP2_PRS_RI_L3_ADDR_MASK); | |
2099 | mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT, | |
2100 | MVPP2_PRS_IPV6_NO_EXT_AI_BIT); | |
2101 | /* Shift back to IPv6 NH */ | |
2102 | mvpp2_prs_sram_shift_set(&pe, -18, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
2103 | ||
2104 | mvpp2_prs_tcam_data_byte_set(&pe, 0, MVPP2_PRS_IPV6_MC, | |
2105 | MVPP2_PRS_IPV6_MC_MASK); | |
2106 | mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV6_NO_EXT_AI_BIT); | |
2107 | /* Unmask all ports */ | |
2108 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2109 | ||
2110 | /* Update shadow table and hw entry */ | |
2111 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP6); | |
2112 | mvpp2_prs_hw_write(priv, &pe); | |
2113 | ||
2114 | return 0; | |
2115 | } | |
2116 | ||
2117 | /* Parser per-port initialization */ | |
2118 | static void mvpp2_prs_hw_port_init(struct mvpp2 *priv, int port, int lu_first, | |
2119 | int lu_max, int offset) | |
2120 | { | |
2121 | u32 val; | |
2122 | ||
2123 | /* Set lookup ID */ | |
2124 | val = mvpp2_read(priv, MVPP2_PRS_INIT_LOOKUP_REG); | |
2125 | val &= ~MVPP2_PRS_PORT_LU_MASK(port); | |
2126 | val |= MVPP2_PRS_PORT_LU_VAL(port, lu_first); | |
2127 | mvpp2_write(priv, MVPP2_PRS_INIT_LOOKUP_REG, val); | |
2128 | ||
2129 | /* Set maximum number of loops for packet received from port */ | |
2130 | val = mvpp2_read(priv, MVPP2_PRS_MAX_LOOP_REG(port)); | |
2131 | val &= ~MVPP2_PRS_MAX_LOOP_MASK(port); | |
2132 | val |= MVPP2_PRS_MAX_LOOP_VAL(port, lu_max); | |
2133 | mvpp2_write(priv, MVPP2_PRS_MAX_LOOP_REG(port), val); | |
2134 | ||
2135 | /* Set initial offset for packet header extraction for the first | |
2136 | * searching loop | |
2137 | */ | |
2138 | val = mvpp2_read(priv, MVPP2_PRS_INIT_OFFS_REG(port)); | |
2139 | val &= ~MVPP2_PRS_INIT_OFF_MASK(port); | |
2140 | val |= MVPP2_PRS_INIT_OFF_VAL(port, offset); | |
2141 | mvpp2_write(priv, MVPP2_PRS_INIT_OFFS_REG(port), val); | |
2142 | } | |
2143 | ||
2144 | /* Default flow entries initialization for all ports */ | |
2145 | static void mvpp2_prs_def_flow_init(struct mvpp2 *priv) | |
2146 | { | |
2147 | struct mvpp2_prs_entry pe; | |
2148 | int port; | |
2149 | ||
2150 | for (port = 0; port < MVPP2_MAX_PORTS; port++) { | |
2151 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2152 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2153 | pe.index = MVPP2_PE_FIRST_DEFAULT_FLOW - port; | |
2154 | ||
2155 | /* Mask all ports */ | |
2156 | mvpp2_prs_tcam_port_map_set(&pe, 0); | |
2157 | ||
2158 | /* Set flow ID*/ | |
2159 | mvpp2_prs_sram_ai_update(&pe, port, MVPP2_PRS_FLOW_ID_MASK); | |
2160 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_DONE_BIT, 1); | |
2161 | ||
2162 | /* Update shadow table and hw entry */ | |
2163 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_FLOWS); | |
2164 | mvpp2_prs_hw_write(priv, &pe); | |
2165 | } | |
2166 | } | |
2167 | ||
2168 | /* Set default entry for Marvell Header field */ | |
2169 | static void mvpp2_prs_mh_init(struct mvpp2 *priv) | |
2170 | { | |
2171 | struct mvpp2_prs_entry pe; | |
2172 | ||
2173 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2174 | ||
2175 | pe.index = MVPP2_PE_MH_DEFAULT; | |
2176 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MH); | |
2177 | mvpp2_prs_sram_shift_set(&pe, MVPP2_MH_SIZE, | |
2178 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
2179 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_MAC); | |
2180 | ||
2181 | /* Unmask all ports */ | |
2182 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2183 | ||
2184 | /* Update shadow table and hw entry */ | |
2185 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MH); | |
2186 | mvpp2_prs_hw_write(priv, &pe); | |
2187 | } | |
2188 | ||
2189 | /* Set default entires (place holder) for promiscuous, non-promiscuous and | |
2190 | * multicast MAC addresses | |
2191 | */ | |
2192 | static void mvpp2_prs_mac_init(struct mvpp2 *priv) | |
2193 | { | |
2194 | struct mvpp2_prs_entry pe; | |
2195 | ||
2196 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2197 | ||
2198 | /* Non-promiscuous mode for all ports - DROP unknown packets */ | |
2199 | pe.index = MVPP2_PE_MAC_NON_PROMISCUOUS; | |
2200 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC); | |
2201 | ||
2202 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_DROP_MASK, | |
2203 | MVPP2_PRS_RI_DROP_MASK); | |
2204 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
2205 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2206 | ||
2207 | /* Unmask all ports */ | |
2208 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2209 | ||
2210 | /* Update shadow table and hw entry */ | |
2211 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC); | |
2212 | mvpp2_prs_hw_write(priv, &pe); | |
2213 | ||
2214 | /* place holders only - no ports */ | |
2215 | mvpp2_prs_mac_drop_all_set(priv, 0, false); | |
2216 | mvpp2_prs_mac_promisc_set(priv, 0, false); | |
2217 | mvpp2_prs_mac_multi_set(priv, MVPP2_PE_MAC_MC_ALL, 0, false); | |
2218 | mvpp2_prs_mac_multi_set(priv, MVPP2_PE_MAC_MC_IP6, 0, false); | |
2219 | } | |
2220 | ||
2221 | /* Set default entries for various types of dsa packets */ | |
2222 | static void mvpp2_prs_dsa_init(struct mvpp2 *priv) | |
2223 | { | |
2224 | struct mvpp2_prs_entry pe; | |
2225 | ||
2226 | /* None tagged EDSA entry - place holder */ | |
2227 | mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_UNTAGGED, | |
2228 | MVPP2_PRS_EDSA); | |
2229 | ||
2230 | /* Tagged EDSA entry - place holder */ | |
2231 | mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA); | |
2232 | ||
2233 | /* None tagged DSA entry - place holder */ | |
2234 | mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_UNTAGGED, | |
2235 | MVPP2_PRS_DSA); | |
2236 | ||
2237 | /* Tagged DSA entry - place holder */ | |
2238 | mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_TAGGED, MVPP2_PRS_DSA); | |
2239 | ||
2240 | /* None tagged EDSA ethertype entry - place holder*/ | |
2241 | mvpp2_prs_dsa_tag_ethertype_set(priv, 0, false, | |
2242 | MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA); | |
2243 | ||
2244 | /* Tagged EDSA ethertype entry - place holder*/ | |
2245 | mvpp2_prs_dsa_tag_ethertype_set(priv, 0, false, | |
2246 | MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA); | |
2247 | ||
2248 | /* None tagged DSA ethertype entry */ | |
2249 | mvpp2_prs_dsa_tag_ethertype_set(priv, 0, true, | |
2250 | MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA); | |
2251 | ||
2252 | /* Tagged DSA ethertype entry */ | |
2253 | mvpp2_prs_dsa_tag_ethertype_set(priv, 0, true, | |
2254 | MVPP2_PRS_TAGGED, MVPP2_PRS_DSA); | |
2255 | ||
2256 | /* Set default entry, in case DSA or EDSA tag not found */ | |
2257 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2258 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_DSA); | |
2259 | pe.index = MVPP2_PE_DSA_DEFAULT; | |
2260 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VLAN); | |
2261 | ||
2262 | /* Shift 0 bytes */ | |
2263 | mvpp2_prs_sram_shift_set(&pe, 0, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
2264 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC); | |
2265 | ||
2266 | /* Clear all sram ai bits for next iteration */ | |
2267 | mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_SRAM_AI_MASK); | |
2268 | ||
2269 | /* Unmask all ports */ | |
2270 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2271 | ||
2272 | mvpp2_prs_hw_write(priv, &pe); | |
2273 | } | |
2274 | ||
2275 | /* Match basic ethertypes */ | |
2276 | static int mvpp2_prs_etype_init(struct mvpp2 *priv) | |
2277 | { | |
2278 | struct mvpp2_prs_entry pe; | |
2279 | int tid; | |
2280 | ||
2281 | /* Ethertype: PPPoE */ | |
2282 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2283 | MVPP2_PE_LAST_FREE_TID); | |
2284 | if (tid < 0) | |
2285 | return tid; | |
2286 | ||
2287 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2288 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2); | |
2289 | pe.index = tid; | |
2290 | ||
2291 | mvpp2_prs_match_etype(&pe, 0, ETH_P_PPP_SES); | |
2292 | ||
2293 | mvpp2_prs_sram_shift_set(&pe, MVPP2_PPPOE_HDR_SIZE, | |
2294 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
2295 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_PPPOE); | |
2296 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_PPPOE_MASK, | |
2297 | MVPP2_PRS_RI_PPPOE_MASK); | |
2298 | ||
2299 | /* Update shadow table and hw entry */ | |
2300 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2); | |
2301 | priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF; | |
2302 | priv->prs_shadow[pe.index].finish = false; | |
2303 | mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_PPPOE_MASK, | |
2304 | MVPP2_PRS_RI_PPPOE_MASK); | |
2305 | mvpp2_prs_hw_write(priv, &pe); | |
2306 | ||
2307 | /* Ethertype: ARP */ | |
2308 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2309 | MVPP2_PE_LAST_FREE_TID); | |
2310 | if (tid < 0) | |
2311 | return tid; | |
2312 | ||
2313 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2314 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2); | |
2315 | pe.index = tid; | |
2316 | ||
2317 | mvpp2_prs_match_etype(&pe, 0, ETH_P_ARP); | |
2318 | ||
2319 | /* Generate flow in the next iteration*/ | |
2320 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2321 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
2322 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_ARP, | |
2323 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2324 | /* Set L3 offset */ | |
2325 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3, | |
2326 | MVPP2_ETH_TYPE_LEN, | |
2327 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
2328 | ||
2329 | /* Update shadow table and hw entry */ | |
2330 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2); | |
2331 | priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF; | |
2332 | priv->prs_shadow[pe.index].finish = true; | |
2333 | mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_ARP, | |
2334 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2335 | mvpp2_prs_hw_write(priv, &pe); | |
2336 | ||
2337 | /* Ethertype: LBTD */ | |
2338 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2339 | MVPP2_PE_LAST_FREE_TID); | |
2340 | if (tid < 0) | |
2341 | return tid; | |
2342 | ||
2343 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2344 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2); | |
2345 | pe.index = tid; | |
2346 | ||
2347 | mvpp2_prs_match_etype(&pe, 0, MVPP2_IP_LBDT_TYPE); | |
2348 | ||
2349 | /* Generate flow in the next iteration*/ | |
2350 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2351 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
2352 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_CPU_CODE_RX_SPEC | | |
2353 | MVPP2_PRS_RI_UDF3_RX_SPECIAL, | |
2354 | MVPP2_PRS_RI_CPU_CODE_MASK | | |
2355 | MVPP2_PRS_RI_UDF3_MASK); | |
2356 | /* Set L3 offset */ | |
2357 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3, | |
2358 | MVPP2_ETH_TYPE_LEN, | |
2359 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
2360 | ||
2361 | /* Update shadow table and hw entry */ | |
2362 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2); | |
2363 | priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF; | |
2364 | priv->prs_shadow[pe.index].finish = true; | |
2365 | mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_CPU_CODE_RX_SPEC | | |
2366 | MVPP2_PRS_RI_UDF3_RX_SPECIAL, | |
2367 | MVPP2_PRS_RI_CPU_CODE_MASK | | |
2368 | MVPP2_PRS_RI_UDF3_MASK); | |
2369 | mvpp2_prs_hw_write(priv, &pe); | |
2370 | ||
2371 | /* Ethertype: IPv4 without options */ | |
2372 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2373 | MVPP2_PE_LAST_FREE_TID); | |
2374 | if (tid < 0) | |
2375 | return tid; | |
2376 | ||
2377 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2378 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2); | |
2379 | pe.index = tid; | |
2380 | ||
2381 | mvpp2_prs_match_etype(&pe, 0, ETH_P_IP); | |
2382 | mvpp2_prs_tcam_data_byte_set(&pe, MVPP2_ETH_TYPE_LEN, | |
2383 | MVPP2_PRS_IPV4_HEAD | MVPP2_PRS_IPV4_IHL, | |
2384 | MVPP2_PRS_IPV4_HEAD_MASK | | |
2385 | MVPP2_PRS_IPV4_IHL_MASK); | |
2386 | ||
2387 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4); | |
2388 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP4, | |
2389 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2390 | /* Skip eth_type + 4 bytes of IP header */ | |
2391 | mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN + 4, | |
2392 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
2393 | /* Set L3 offset */ | |
2394 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3, | |
2395 | MVPP2_ETH_TYPE_LEN, | |
2396 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
2397 | ||
2398 | /* Update shadow table and hw entry */ | |
2399 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2); | |
2400 | priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF; | |
2401 | priv->prs_shadow[pe.index].finish = false; | |
2402 | mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_IP4, | |
2403 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2404 | mvpp2_prs_hw_write(priv, &pe); | |
2405 | ||
2406 | /* Ethertype: IPv4 with options */ | |
2407 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2408 | MVPP2_PE_LAST_FREE_TID); | |
2409 | if (tid < 0) | |
2410 | return tid; | |
2411 | ||
2412 | pe.index = tid; | |
2413 | ||
2414 | /* Clear tcam data before updating */ | |
2415 | pe.tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE(MVPP2_ETH_TYPE_LEN)] = 0x0; | |
2416 | pe.tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE_EN(MVPP2_ETH_TYPE_LEN)] = 0x0; | |
2417 | ||
2418 | mvpp2_prs_tcam_data_byte_set(&pe, MVPP2_ETH_TYPE_LEN, | |
2419 | MVPP2_PRS_IPV4_HEAD, | |
2420 | MVPP2_PRS_IPV4_HEAD_MASK); | |
2421 | ||
2422 | /* Clear ri before updating */ | |
2423 | pe.sram.word[MVPP2_PRS_SRAM_RI_WORD] = 0x0; | |
2424 | pe.sram.word[MVPP2_PRS_SRAM_RI_CTRL_WORD] = 0x0; | |
2425 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP4_OPT, | |
2426 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2427 | ||
2428 | /* Update shadow table and hw entry */ | |
2429 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2); | |
2430 | priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF; | |
2431 | priv->prs_shadow[pe.index].finish = false; | |
2432 | mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_IP4_OPT, | |
2433 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2434 | mvpp2_prs_hw_write(priv, &pe); | |
2435 | ||
2436 | /* Ethertype: IPv6 without options */ | |
2437 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2438 | MVPP2_PE_LAST_FREE_TID); | |
2439 | if (tid < 0) | |
2440 | return tid; | |
2441 | ||
2442 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2443 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2); | |
2444 | pe.index = tid; | |
2445 | ||
2446 | mvpp2_prs_match_etype(&pe, 0, ETH_P_IPV6); | |
2447 | ||
2448 | /* Skip DIP of IPV6 header */ | |
2449 | mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN + 8 + | |
2450 | MVPP2_MAX_L3_ADDR_SIZE, | |
2451 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
2452 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6); | |
2453 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP6, | |
2454 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2455 | /* Set L3 offset */ | |
2456 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3, | |
2457 | MVPP2_ETH_TYPE_LEN, | |
2458 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
2459 | ||
2460 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2); | |
2461 | priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF; | |
2462 | priv->prs_shadow[pe.index].finish = false; | |
2463 | mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_IP6, | |
2464 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2465 | mvpp2_prs_hw_write(priv, &pe); | |
2466 | ||
2467 | /* Default entry for MVPP2_PRS_LU_L2 - Unknown ethtype */ | |
2468 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2469 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2); | |
2470 | pe.index = MVPP2_PE_ETH_TYPE_UN; | |
2471 | ||
2472 | /* Unmask all ports */ | |
2473 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2474 | ||
2475 | /* Generate flow in the next iteration*/ | |
2476 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
2477 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2478 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UN, | |
2479 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2480 | /* Set L3 offset even it's unknown L3 */ | |
2481 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3, | |
2482 | MVPP2_ETH_TYPE_LEN, | |
2483 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
2484 | ||
2485 | /* Update shadow table and hw entry */ | |
2486 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2); | |
2487 | priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF; | |
2488 | priv->prs_shadow[pe.index].finish = true; | |
2489 | mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_UN, | |
2490 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2491 | mvpp2_prs_hw_write(priv, &pe); | |
2492 | ||
2493 | return 0; | |
2494 | } | |
2495 | ||
2496 | /* Configure vlan entries and detect up to 2 successive VLAN tags. | |
2497 | * Possible options: | |
2498 | * 0x8100, 0x88A8 | |
2499 | * 0x8100, 0x8100 | |
2500 | * 0x8100 | |
2501 | * 0x88A8 | |
2502 | */ | |
2503 | static int mvpp2_prs_vlan_init(struct platform_device *pdev, struct mvpp2 *priv) | |
2504 | { | |
2505 | struct mvpp2_prs_entry pe; | |
2506 | int err; | |
2507 | ||
2508 | priv->prs_double_vlans = devm_kcalloc(&pdev->dev, sizeof(bool), | |
2509 | MVPP2_PRS_DBL_VLANS_MAX, | |
2510 | GFP_KERNEL); | |
2511 | if (!priv->prs_double_vlans) | |
2512 | return -ENOMEM; | |
2513 | ||
2514 | /* Double VLAN: 0x8100, 0x88A8 */ | |
2515 | err = mvpp2_prs_double_vlan_add(priv, ETH_P_8021Q, ETH_P_8021AD, | |
2516 | MVPP2_PRS_PORT_MASK); | |
2517 | if (err) | |
2518 | return err; | |
2519 | ||
2520 | /* Double VLAN: 0x8100, 0x8100 */ | |
2521 | err = mvpp2_prs_double_vlan_add(priv, ETH_P_8021Q, ETH_P_8021Q, | |
2522 | MVPP2_PRS_PORT_MASK); | |
2523 | if (err) | |
2524 | return err; | |
2525 | ||
2526 | /* Single VLAN: 0x88a8 */ | |
2527 | err = mvpp2_prs_vlan_add(priv, ETH_P_8021AD, MVPP2_PRS_SINGLE_VLAN_AI, | |
2528 | MVPP2_PRS_PORT_MASK); | |
2529 | if (err) | |
2530 | return err; | |
2531 | ||
2532 | /* Single VLAN: 0x8100 */ | |
2533 | err = mvpp2_prs_vlan_add(priv, ETH_P_8021Q, MVPP2_PRS_SINGLE_VLAN_AI, | |
2534 | MVPP2_PRS_PORT_MASK); | |
2535 | if (err) | |
2536 | return err; | |
2537 | ||
2538 | /* Set default double vlan entry */ | |
2539 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2540 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VLAN); | |
2541 | pe.index = MVPP2_PE_VLAN_DBL; | |
2542 | ||
2543 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2); | |
2544 | /* Clear ai for next iterations */ | |
2545 | mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_SRAM_AI_MASK); | |
2546 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_DOUBLE, | |
2547 | MVPP2_PRS_RI_VLAN_MASK); | |
2548 | ||
2549 | mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_DBL_VLAN_AI_BIT, | |
2550 | MVPP2_PRS_DBL_VLAN_AI_BIT); | |
2551 | /* Unmask all ports */ | |
2552 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2553 | ||
2554 | /* Update shadow table and hw entry */ | |
2555 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VLAN); | |
2556 | mvpp2_prs_hw_write(priv, &pe); | |
2557 | ||
2558 | /* Set default vlan none entry */ | |
2559 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2560 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VLAN); | |
2561 | pe.index = MVPP2_PE_VLAN_NONE; | |
2562 | ||
2563 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2); | |
2564 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_NONE, | |
2565 | MVPP2_PRS_RI_VLAN_MASK); | |
2566 | ||
2567 | /* Unmask all ports */ | |
2568 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2569 | ||
2570 | /* Update shadow table and hw entry */ | |
2571 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VLAN); | |
2572 | mvpp2_prs_hw_write(priv, &pe); | |
2573 | ||
2574 | return 0; | |
2575 | } | |
2576 | ||
2577 | /* Set entries for PPPoE ethertype */ | |
2578 | static int mvpp2_prs_pppoe_init(struct mvpp2 *priv) | |
2579 | { | |
2580 | struct mvpp2_prs_entry pe; | |
2581 | int tid; | |
2582 | ||
2583 | /* IPv4 over PPPoE with options */ | |
2584 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2585 | MVPP2_PE_LAST_FREE_TID); | |
2586 | if (tid < 0) | |
2587 | return tid; | |
2588 | ||
2589 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2590 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_PPPOE); | |
2591 | pe.index = tid; | |
2592 | ||
2593 | mvpp2_prs_match_etype(&pe, 0, PPP_IP); | |
2594 | ||
2595 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4); | |
2596 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP4_OPT, | |
2597 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2598 | /* Skip eth_type + 4 bytes of IP header */ | |
2599 | mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN + 4, | |
2600 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
2601 | /* Set L3 offset */ | |
2602 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3, | |
2603 | MVPP2_ETH_TYPE_LEN, | |
2604 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
2605 | ||
2606 | /* Update shadow table and hw entry */ | |
2607 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_PPPOE); | |
2608 | mvpp2_prs_hw_write(priv, &pe); | |
2609 | ||
2610 | /* IPv4 over PPPoE without options */ | |
2611 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2612 | MVPP2_PE_LAST_FREE_TID); | |
2613 | if (tid < 0) | |
2614 | return tid; | |
2615 | ||
2616 | pe.index = tid; | |
2617 | ||
2618 | mvpp2_prs_tcam_data_byte_set(&pe, MVPP2_ETH_TYPE_LEN, | |
2619 | MVPP2_PRS_IPV4_HEAD | MVPP2_PRS_IPV4_IHL, | |
2620 | MVPP2_PRS_IPV4_HEAD_MASK | | |
2621 | MVPP2_PRS_IPV4_IHL_MASK); | |
2622 | ||
2623 | /* Clear ri before updating */ | |
2624 | pe.sram.word[MVPP2_PRS_SRAM_RI_WORD] = 0x0; | |
2625 | pe.sram.word[MVPP2_PRS_SRAM_RI_CTRL_WORD] = 0x0; | |
2626 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP4, | |
2627 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2628 | ||
2629 | /* Update shadow table and hw entry */ | |
2630 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_PPPOE); | |
2631 | mvpp2_prs_hw_write(priv, &pe); | |
2632 | ||
2633 | /* IPv6 over PPPoE */ | |
2634 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2635 | MVPP2_PE_LAST_FREE_TID); | |
2636 | if (tid < 0) | |
2637 | return tid; | |
2638 | ||
2639 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2640 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_PPPOE); | |
2641 | pe.index = tid; | |
2642 | ||
2643 | mvpp2_prs_match_etype(&pe, 0, PPP_IPV6); | |
2644 | ||
2645 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6); | |
2646 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP6, | |
2647 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2648 | /* Skip eth_type + 4 bytes of IPv6 header */ | |
2649 | mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN + 4, | |
2650 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
2651 | /* Set L3 offset */ | |
2652 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3, | |
2653 | MVPP2_ETH_TYPE_LEN, | |
2654 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
2655 | ||
2656 | /* Update shadow table and hw entry */ | |
2657 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_PPPOE); | |
2658 | mvpp2_prs_hw_write(priv, &pe); | |
2659 | ||
2660 | /* Non-IP over PPPoE */ | |
2661 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2662 | MVPP2_PE_LAST_FREE_TID); | |
2663 | if (tid < 0) | |
2664 | return tid; | |
2665 | ||
2666 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2667 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_PPPOE); | |
2668 | pe.index = tid; | |
2669 | ||
2670 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UN, | |
2671 | MVPP2_PRS_RI_L3_PROTO_MASK); | |
2672 | ||
2673 | /* Finished: go to flowid generation */ | |
2674 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2675 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
2676 | /* Set L3 offset even if it's unknown L3 */ | |
2677 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3, | |
2678 | MVPP2_ETH_TYPE_LEN, | |
2679 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
2680 | ||
2681 | /* Update shadow table and hw entry */ | |
2682 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_PPPOE); | |
2683 | mvpp2_prs_hw_write(priv, &pe); | |
2684 | ||
2685 | return 0; | |
2686 | } | |
2687 | ||
2688 | /* Initialize entries for IPv4 */ | |
2689 | static int mvpp2_prs_ip4_init(struct mvpp2 *priv) | |
2690 | { | |
2691 | struct mvpp2_prs_entry pe; | |
2692 | int err; | |
2693 | ||
2694 | /* Set entries for TCP, UDP and IGMP over IPv4 */ | |
2695 | err = mvpp2_prs_ip4_proto(priv, IPPROTO_TCP, MVPP2_PRS_RI_L4_TCP, | |
2696 | MVPP2_PRS_RI_L4_PROTO_MASK); | |
2697 | if (err) | |
2698 | return err; | |
2699 | ||
2700 | err = mvpp2_prs_ip4_proto(priv, IPPROTO_UDP, MVPP2_PRS_RI_L4_UDP, | |
2701 | MVPP2_PRS_RI_L4_PROTO_MASK); | |
2702 | if (err) | |
2703 | return err; | |
2704 | ||
2705 | err = mvpp2_prs_ip4_proto(priv, IPPROTO_IGMP, | |
2706 | MVPP2_PRS_RI_CPU_CODE_RX_SPEC | | |
2707 | MVPP2_PRS_RI_UDF3_RX_SPECIAL, | |
2708 | MVPP2_PRS_RI_CPU_CODE_MASK | | |
2709 | MVPP2_PRS_RI_UDF3_MASK); | |
2710 | if (err) | |
2711 | return err; | |
2712 | ||
2713 | /* IPv4 Broadcast */ | |
2714 | err = mvpp2_prs_ip4_cast(priv, MVPP2_PRS_L3_BROAD_CAST); | |
2715 | if (err) | |
2716 | return err; | |
2717 | ||
2718 | /* IPv4 Multicast */ | |
2719 | err = mvpp2_prs_ip4_cast(priv, MVPP2_PRS_L3_MULTI_CAST); | |
2720 | if (err) | |
2721 | return err; | |
2722 | ||
2723 | /* Default IPv4 entry for unknown protocols */ | |
2724 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2725 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4); | |
2726 | pe.index = MVPP2_PE_IP4_PROTO_UN; | |
2727 | ||
2728 | /* Set next lu to IPv4 */ | |
2729 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4); | |
2730 | mvpp2_prs_sram_shift_set(&pe, 12, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
2731 | /* Set L4 offset */ | |
2732 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4, | |
2733 | sizeof(struct iphdr) - 4, | |
2734 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
2735 | mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT, | |
2736 | MVPP2_PRS_IPV4_DIP_AI_BIT); | |
2737 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L4_OTHER, | |
2738 | MVPP2_PRS_RI_L4_PROTO_MASK); | |
2739 | ||
2740 | mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV4_DIP_AI_BIT); | |
2741 | /* Unmask all ports */ | |
2742 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2743 | ||
2744 | /* Update shadow table and hw entry */ | |
2745 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4); | |
2746 | mvpp2_prs_hw_write(priv, &pe); | |
2747 | ||
2748 | /* Default IPv4 entry for unicast address */ | |
2749 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2750 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4); | |
2751 | pe.index = MVPP2_PE_IP4_ADDR_UN; | |
2752 | ||
2753 | /* Finished: go to flowid generation */ | |
2754 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2755 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
2756 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UCAST, | |
2757 | MVPP2_PRS_RI_L3_ADDR_MASK); | |
2758 | ||
2759 | mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT, | |
2760 | MVPP2_PRS_IPV4_DIP_AI_BIT); | |
2761 | /* Unmask all ports */ | |
2762 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2763 | ||
2764 | /* Update shadow table and hw entry */ | |
2765 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4); | |
2766 | mvpp2_prs_hw_write(priv, &pe); | |
2767 | ||
2768 | return 0; | |
2769 | } | |
2770 | ||
2771 | /* Initialize entries for IPv6 */ | |
2772 | static int mvpp2_prs_ip6_init(struct mvpp2 *priv) | |
2773 | { | |
2774 | struct mvpp2_prs_entry pe; | |
2775 | int tid, err; | |
2776 | ||
2777 | /* Set entries for TCP, UDP and ICMP over IPv6 */ | |
2778 | err = mvpp2_prs_ip6_proto(priv, IPPROTO_TCP, | |
2779 | MVPP2_PRS_RI_L4_TCP, | |
2780 | MVPP2_PRS_RI_L4_PROTO_MASK); | |
2781 | if (err) | |
2782 | return err; | |
2783 | ||
2784 | err = mvpp2_prs_ip6_proto(priv, IPPROTO_UDP, | |
2785 | MVPP2_PRS_RI_L4_UDP, | |
2786 | MVPP2_PRS_RI_L4_PROTO_MASK); | |
2787 | if (err) | |
2788 | return err; | |
2789 | ||
2790 | err = mvpp2_prs_ip6_proto(priv, IPPROTO_ICMPV6, | |
2791 | MVPP2_PRS_RI_CPU_CODE_RX_SPEC | | |
2792 | MVPP2_PRS_RI_UDF3_RX_SPECIAL, | |
2793 | MVPP2_PRS_RI_CPU_CODE_MASK | | |
2794 | MVPP2_PRS_RI_UDF3_MASK); | |
2795 | if (err) | |
2796 | return err; | |
2797 | ||
2798 | /* IPv4 is the last header. This is similar case as 6-TCP or 17-UDP */ | |
2799 | /* Result Info: UDF7=1, DS lite */ | |
2800 | err = mvpp2_prs_ip6_proto(priv, IPPROTO_IPIP, | |
2801 | MVPP2_PRS_RI_UDF7_IP6_LITE, | |
2802 | MVPP2_PRS_RI_UDF7_MASK); | |
2803 | if (err) | |
2804 | return err; | |
2805 | ||
2806 | /* IPv6 multicast */ | |
2807 | err = mvpp2_prs_ip6_cast(priv, MVPP2_PRS_L3_MULTI_CAST); | |
2808 | if (err) | |
2809 | return err; | |
2810 | ||
2811 | /* Entry for checking hop limit */ | |
2812 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
2813 | MVPP2_PE_LAST_FREE_TID); | |
2814 | if (tid < 0) | |
2815 | return tid; | |
2816 | ||
2817 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2818 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6); | |
2819 | pe.index = tid; | |
2820 | ||
2821 | /* Finished: go to flowid generation */ | |
2822 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2823 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
2824 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UN | | |
2825 | MVPP2_PRS_RI_DROP_MASK, | |
2826 | MVPP2_PRS_RI_L3_PROTO_MASK | | |
2827 | MVPP2_PRS_RI_DROP_MASK); | |
2828 | ||
2829 | mvpp2_prs_tcam_data_byte_set(&pe, 1, 0x00, MVPP2_PRS_IPV6_HOP_MASK); | |
2830 | mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT, | |
2831 | MVPP2_PRS_IPV6_NO_EXT_AI_BIT); | |
2832 | ||
2833 | /* Update shadow table and hw entry */ | |
2834 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4); | |
2835 | mvpp2_prs_hw_write(priv, &pe); | |
2836 | ||
2837 | /* Default IPv6 entry for unknown protocols */ | |
2838 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2839 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6); | |
2840 | pe.index = MVPP2_PE_IP6_PROTO_UN; | |
2841 | ||
2842 | /* Finished: go to flowid generation */ | |
2843 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2844 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
2845 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L4_OTHER, | |
2846 | MVPP2_PRS_RI_L4_PROTO_MASK); | |
2847 | /* Set L4 offset relatively to our current place */ | |
2848 | mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4, | |
2849 | sizeof(struct ipv6hdr) - 4, | |
2850 | MVPP2_PRS_SRAM_OP_SEL_UDF_ADD); | |
2851 | ||
2852 | mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT, | |
2853 | MVPP2_PRS_IPV6_NO_EXT_AI_BIT); | |
2854 | /* Unmask all ports */ | |
2855 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2856 | ||
2857 | /* Update shadow table and hw entry */ | |
2858 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4); | |
2859 | mvpp2_prs_hw_write(priv, &pe); | |
2860 | ||
2861 | /* Default IPv6 entry for unknown ext protocols */ | |
2862 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2863 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6); | |
2864 | pe.index = MVPP2_PE_IP6_EXT_PROTO_UN; | |
2865 | ||
2866 | /* Finished: go to flowid generation */ | |
2867 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS); | |
2868 | mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1); | |
2869 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L4_OTHER, | |
2870 | MVPP2_PRS_RI_L4_PROTO_MASK); | |
2871 | ||
2872 | mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_EXT_AI_BIT, | |
2873 | MVPP2_PRS_IPV6_EXT_AI_BIT); | |
2874 | /* Unmask all ports */ | |
2875 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2876 | ||
2877 | /* Update shadow table and hw entry */ | |
2878 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4); | |
2879 | mvpp2_prs_hw_write(priv, &pe); | |
2880 | ||
2881 | /* Default IPv6 entry for unicast address */ | |
2882 | memset(&pe, 0, sizeof(struct mvpp2_prs_entry)); | |
2883 | mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6); | |
2884 | pe.index = MVPP2_PE_IP6_ADDR_UN; | |
2885 | ||
2886 | /* Finished: go to IPv6 again */ | |
2887 | mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6); | |
2888 | mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UCAST, | |
2889 | MVPP2_PRS_RI_L3_ADDR_MASK); | |
2890 | mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT, | |
2891 | MVPP2_PRS_IPV6_NO_EXT_AI_BIT); | |
2892 | /* Shift back to IPV6 NH */ | |
2893 | mvpp2_prs_sram_shift_set(&pe, -18, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
2894 | ||
2895 | mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV6_NO_EXT_AI_BIT); | |
2896 | /* Unmask all ports */ | |
2897 | mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK); | |
2898 | ||
2899 | /* Update shadow table and hw entry */ | |
2900 | mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP6); | |
2901 | mvpp2_prs_hw_write(priv, &pe); | |
2902 | ||
2903 | return 0; | |
2904 | } | |
2905 | ||
2906 | /* Parser default initialization */ | |
2907 | static int mvpp2_prs_default_init(struct platform_device *pdev, | |
2908 | struct mvpp2 *priv) | |
2909 | { | |
2910 | int err, index, i; | |
2911 | ||
2912 | /* Enable tcam table */ | |
2913 | mvpp2_write(priv, MVPP2_PRS_TCAM_CTRL_REG, MVPP2_PRS_TCAM_EN_MASK); | |
2914 | ||
2915 | /* Clear all tcam and sram entries */ | |
2916 | for (index = 0; index < MVPP2_PRS_TCAM_SRAM_SIZE; index++) { | |
2917 | mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, index); | |
2918 | for (i = 0; i < MVPP2_PRS_TCAM_WORDS; i++) | |
2919 | mvpp2_write(priv, MVPP2_PRS_TCAM_DATA_REG(i), 0); | |
2920 | ||
2921 | mvpp2_write(priv, MVPP2_PRS_SRAM_IDX_REG, index); | |
2922 | for (i = 0; i < MVPP2_PRS_SRAM_WORDS; i++) | |
2923 | mvpp2_write(priv, MVPP2_PRS_SRAM_DATA_REG(i), 0); | |
2924 | } | |
2925 | ||
2926 | /* Invalidate all tcam entries */ | |
2927 | for (index = 0; index < MVPP2_PRS_TCAM_SRAM_SIZE; index++) | |
2928 | mvpp2_prs_hw_inv(priv, index); | |
2929 | ||
2930 | priv->prs_shadow = devm_kcalloc(&pdev->dev, MVPP2_PRS_TCAM_SRAM_SIZE, | |
2931 | sizeof(struct mvpp2_prs_shadow), | |
2932 | GFP_KERNEL); | |
2933 | if (!priv->prs_shadow) | |
2934 | return -ENOMEM; | |
2935 | ||
2936 | /* Always start from lookup = 0 */ | |
2937 | for (index = 0; index < MVPP2_MAX_PORTS; index++) | |
2938 | mvpp2_prs_hw_port_init(priv, index, MVPP2_PRS_LU_MH, | |
2939 | MVPP2_PRS_PORT_LU_MAX, 0); | |
2940 | ||
2941 | mvpp2_prs_def_flow_init(priv); | |
2942 | ||
2943 | mvpp2_prs_mh_init(priv); | |
2944 | ||
2945 | mvpp2_prs_mac_init(priv); | |
2946 | ||
2947 | mvpp2_prs_dsa_init(priv); | |
2948 | ||
2949 | err = mvpp2_prs_etype_init(priv); | |
2950 | if (err) | |
2951 | return err; | |
2952 | ||
2953 | err = mvpp2_prs_vlan_init(pdev, priv); | |
2954 | if (err) | |
2955 | return err; | |
2956 | ||
2957 | err = mvpp2_prs_pppoe_init(priv); | |
2958 | if (err) | |
2959 | return err; | |
2960 | ||
2961 | err = mvpp2_prs_ip6_init(priv); | |
2962 | if (err) | |
2963 | return err; | |
2964 | ||
2965 | err = mvpp2_prs_ip4_init(priv); | |
2966 | if (err) | |
2967 | return err; | |
2968 | ||
2969 | return 0; | |
2970 | } | |
2971 | ||
2972 | /* Compare MAC DA with tcam entry data */ | |
2973 | static bool mvpp2_prs_mac_range_equals(struct mvpp2_prs_entry *pe, | |
2974 | const u8 *da, unsigned char *mask) | |
2975 | { | |
2976 | unsigned char tcam_byte, tcam_mask; | |
2977 | int index; | |
2978 | ||
2979 | for (index = 0; index < ETH_ALEN; index++) { | |
2980 | mvpp2_prs_tcam_data_byte_get(pe, index, &tcam_byte, &tcam_mask); | |
2981 | if (tcam_mask != mask[index]) | |
2982 | return false; | |
2983 | ||
2984 | if ((tcam_mask & tcam_byte) != (da[index] & mask[index])) | |
2985 | return false; | |
2986 | } | |
2987 | ||
2988 | return true; | |
2989 | } | |
2990 | ||
2991 | /* Find tcam entry with matched pair <MAC DA, port> */ | |
2992 | static struct mvpp2_prs_entry * | |
2993 | mvpp2_prs_mac_da_range_find(struct mvpp2 *priv, int pmap, const u8 *da, | |
2994 | unsigned char *mask, int udf_type) | |
2995 | { | |
2996 | struct mvpp2_prs_entry *pe; | |
2997 | int tid; | |
2998 | ||
2999 | pe = kzalloc(sizeof(*pe), GFP_KERNEL); | |
3000 | if (!pe) | |
3001 | return NULL; | |
3002 | mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_MAC); | |
3003 | ||
3004 | /* Go through the all entires with MVPP2_PRS_LU_MAC */ | |
3005 | for (tid = MVPP2_PE_FIRST_FREE_TID; | |
3006 | tid <= MVPP2_PE_LAST_FREE_TID; tid++) { | |
3007 | unsigned int entry_pmap; | |
3008 | ||
3009 | if (!priv->prs_shadow[tid].valid || | |
3010 | (priv->prs_shadow[tid].lu != MVPP2_PRS_LU_MAC) || | |
3011 | (priv->prs_shadow[tid].udf != udf_type)) | |
3012 | continue; | |
3013 | ||
3014 | pe->index = tid; | |
3015 | mvpp2_prs_hw_read(priv, pe); | |
3016 | entry_pmap = mvpp2_prs_tcam_port_map_get(pe); | |
3017 | ||
3018 | if (mvpp2_prs_mac_range_equals(pe, da, mask) && | |
3019 | entry_pmap == pmap) | |
3020 | return pe; | |
3021 | } | |
3022 | kfree(pe); | |
3023 | ||
3024 | return NULL; | |
3025 | } | |
3026 | ||
3027 | /* Update parser's mac da entry */ | |
3028 | static int mvpp2_prs_mac_da_accept(struct mvpp2 *priv, int port, | |
3029 | const u8 *da, bool add) | |
3030 | { | |
3031 | struct mvpp2_prs_entry *pe; | |
3032 | unsigned int pmap, len, ri; | |
3033 | unsigned char mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; | |
3034 | int tid; | |
3035 | ||
3036 | /* Scan TCAM and see if entry with this <MAC DA, port> already exist */ | |
3037 | pe = mvpp2_prs_mac_da_range_find(priv, (1 << port), da, mask, | |
3038 | MVPP2_PRS_UDF_MAC_DEF); | |
3039 | ||
3040 | /* No such entry */ | |
3041 | if (!pe) { | |
3042 | if (!add) | |
3043 | return 0; | |
3044 | ||
3045 | /* Create new TCAM entry */ | |
3046 | /* Find first range mac entry*/ | |
3047 | for (tid = MVPP2_PE_FIRST_FREE_TID; | |
3048 | tid <= MVPP2_PE_LAST_FREE_TID; tid++) | |
3049 | if (priv->prs_shadow[tid].valid && | |
3050 | (priv->prs_shadow[tid].lu == MVPP2_PRS_LU_MAC) && | |
3051 | (priv->prs_shadow[tid].udf == | |
3052 | MVPP2_PRS_UDF_MAC_RANGE)) | |
3053 | break; | |
3054 | ||
3055 | /* Go through the all entries from first to last */ | |
3056 | tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID, | |
3057 | tid - 1); | |
3058 | if (tid < 0) | |
3059 | return tid; | |
3060 | ||
3061 | pe = kzalloc(sizeof(*pe), GFP_KERNEL); | |
3062 | if (!pe) | |
c2bb7bc5 | 3063 | return -ENOMEM; |
3f518509 MW |
3064 | mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_MAC); |
3065 | pe->index = tid; | |
3066 | ||
3067 | /* Mask all ports */ | |
3068 | mvpp2_prs_tcam_port_map_set(pe, 0); | |
3069 | } | |
3070 | ||
3071 | /* Update port mask */ | |
3072 | mvpp2_prs_tcam_port_set(pe, port, add); | |
3073 | ||
3074 | /* Invalidate the entry if no ports are left enabled */ | |
3075 | pmap = mvpp2_prs_tcam_port_map_get(pe); | |
3076 | if (pmap == 0) { | |
3077 | if (add) { | |
3078 | kfree(pe); | |
c2bb7bc5 | 3079 | return -EINVAL; |
3f518509 MW |
3080 | } |
3081 | mvpp2_prs_hw_inv(priv, pe->index); | |
3082 | priv->prs_shadow[pe->index].valid = false; | |
3083 | kfree(pe); | |
3084 | return 0; | |
3085 | } | |
3086 | ||
3087 | /* Continue - set next lookup */ | |
3088 | mvpp2_prs_sram_next_lu_set(pe, MVPP2_PRS_LU_DSA); | |
3089 | ||
3090 | /* Set match on DA */ | |
3091 | len = ETH_ALEN; | |
3092 | while (len--) | |
3093 | mvpp2_prs_tcam_data_byte_set(pe, len, da[len], 0xff); | |
3094 | ||
3095 | /* Set result info bits */ | |
3096 | if (is_broadcast_ether_addr(da)) | |
3097 | ri = MVPP2_PRS_RI_L2_BCAST; | |
3098 | else if (is_multicast_ether_addr(da)) | |
3099 | ri = MVPP2_PRS_RI_L2_MCAST; | |
3100 | else | |
3101 | ri = MVPP2_PRS_RI_L2_UCAST | MVPP2_PRS_RI_MAC_ME_MASK; | |
3102 | ||
3103 | mvpp2_prs_sram_ri_update(pe, ri, MVPP2_PRS_RI_L2_CAST_MASK | | |
3104 | MVPP2_PRS_RI_MAC_ME_MASK); | |
3105 | mvpp2_prs_shadow_ri_set(priv, pe->index, ri, MVPP2_PRS_RI_L2_CAST_MASK | | |
3106 | MVPP2_PRS_RI_MAC_ME_MASK); | |
3107 | ||
3108 | /* Shift to ethertype */ | |
3109 | mvpp2_prs_sram_shift_set(pe, 2 * ETH_ALEN, | |
3110 | MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD); | |
3111 | ||
3112 | /* Update shadow table and hw entry */ | |
3113 | priv->prs_shadow[pe->index].udf = MVPP2_PRS_UDF_MAC_DEF; | |
3114 | mvpp2_prs_shadow_set(priv, pe->index, MVPP2_PRS_LU_MAC); | |
3115 | mvpp2_prs_hw_write(priv, pe); | |
3116 | ||
3117 | kfree(pe); | |
3118 | ||
3119 | return 0; | |
3120 | } | |
3121 | ||
3122 | static int mvpp2_prs_update_mac_da(struct net_device *dev, const u8 *da) | |
3123 | { | |
3124 | struct mvpp2_port *port = netdev_priv(dev); | |
3125 | int err; | |
3126 | ||
3127 | /* Remove old parser entry */ | |
3128 | err = mvpp2_prs_mac_da_accept(port->priv, port->id, dev->dev_addr, | |
3129 | false); | |
3130 | if (err) | |
3131 | return err; | |
3132 | ||
3133 | /* Add new parser entry */ | |
3134 | err = mvpp2_prs_mac_da_accept(port->priv, port->id, da, true); | |
3135 | if (err) | |
3136 | return err; | |
3137 | ||
3138 | /* Set addr in the device */ | |
3139 | ether_addr_copy(dev->dev_addr, da); | |
3140 | ||
3141 | return 0; | |
3142 | } | |
3143 | ||
3144 | /* Delete all port's multicast simple (not range) entries */ | |
3145 | static void mvpp2_prs_mcast_del_all(struct mvpp2 *priv, int port) | |
3146 | { | |
3147 | struct mvpp2_prs_entry pe; | |
3148 | int index, tid; | |
3149 | ||
3150 | for (tid = MVPP2_PE_FIRST_FREE_TID; | |
3151 | tid <= MVPP2_PE_LAST_FREE_TID; tid++) { | |
3152 | unsigned char da[ETH_ALEN], da_mask[ETH_ALEN]; | |
3153 | ||
3154 | if (!priv->prs_shadow[tid].valid || | |
3155 | (priv->prs_shadow[tid].lu != MVPP2_PRS_LU_MAC) || | |
3156 | (priv->prs_shadow[tid].udf != MVPP2_PRS_UDF_MAC_DEF)) | |
3157 | continue; | |
3158 | ||
3159 | /* Only simple mac entries */ | |
3160 | pe.index = tid; | |
3161 | mvpp2_prs_hw_read(priv, &pe); | |
3162 | ||
3163 | /* Read mac addr from entry */ | |
3164 | for (index = 0; index < ETH_ALEN; index++) | |
3165 | mvpp2_prs_tcam_data_byte_get(&pe, index, &da[index], | |
3166 | &da_mask[index]); | |
3167 | ||
3168 | if (is_multicast_ether_addr(da) && !is_broadcast_ether_addr(da)) | |
3169 | /* Delete this entry */ | |
3170 | mvpp2_prs_mac_da_accept(priv, port, da, false); | |
3171 | } | |
3172 | } | |
3173 | ||
3174 | static int mvpp2_prs_tag_mode_set(struct mvpp2 *priv, int port, int type) | |
3175 | { | |
3176 | switch (type) { | |
3177 | case MVPP2_TAG_TYPE_EDSA: | |
3178 | /* Add port to EDSA entries */ | |
3179 | mvpp2_prs_dsa_tag_set(priv, port, true, | |
3180 | MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA); | |
3181 | mvpp2_prs_dsa_tag_set(priv, port, true, | |
3182 | MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA); | |
3183 | /* Remove port from DSA entries */ | |
3184 | mvpp2_prs_dsa_tag_set(priv, port, false, | |
3185 | MVPP2_PRS_TAGGED, MVPP2_PRS_DSA); | |
3186 | mvpp2_prs_dsa_tag_set(priv, port, false, | |
3187 | MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA); | |
3188 | break; | |
3189 | ||
3190 | case MVPP2_TAG_TYPE_DSA: | |
3191 | /* Add port to DSA entries */ | |
3192 | mvpp2_prs_dsa_tag_set(priv, port, true, | |
3193 | MVPP2_PRS_TAGGED, MVPP2_PRS_DSA); | |
3194 | mvpp2_prs_dsa_tag_set(priv, port, true, | |
3195 | MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA); | |
3196 | /* Remove port from EDSA entries */ | |
3197 | mvpp2_prs_dsa_tag_set(priv, port, false, | |
3198 | MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA); | |
3199 | mvpp2_prs_dsa_tag_set(priv, port, false, | |
3200 | MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA); | |
3201 | break; | |
3202 | ||
3203 | case MVPP2_TAG_TYPE_MH: | |
3204 | case MVPP2_TAG_TYPE_NONE: | |
3205 | /* Remove port form EDSA and DSA entries */ | |
3206 | mvpp2_prs_dsa_tag_set(priv, port, false, | |
3207 | MVPP2_PRS_TAGGED, MVPP2_PRS_DSA); | |
3208 | mvpp2_prs_dsa_tag_set(priv, port, false, | |
3209 | MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA); | |
3210 | mvpp2_prs_dsa_tag_set(priv, port, false, | |
3211 | MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA); | |
3212 | mvpp2_prs_dsa_tag_set(priv, port, false, | |
3213 | MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA); | |
3214 | break; | |
3215 | ||
3216 | default: | |
3217 | if ((type < 0) || (type > MVPP2_TAG_TYPE_EDSA)) | |
3218 | return -EINVAL; | |
3219 | } | |
3220 | ||
3221 | return 0; | |
3222 | } | |
3223 | ||
3224 | /* Set prs flow for the port */ | |
3225 | static int mvpp2_prs_def_flow(struct mvpp2_port *port) | |
3226 | { | |
3227 | struct mvpp2_prs_entry *pe; | |
3228 | int tid; | |
3229 | ||
3230 | pe = mvpp2_prs_flow_find(port->priv, port->id); | |
3231 | ||
3232 | /* Such entry not exist */ | |
3233 | if (!pe) { | |
3234 | /* Go through the all entires from last to first */ | |
3235 | tid = mvpp2_prs_tcam_first_free(port->priv, | |
3236 | MVPP2_PE_LAST_FREE_TID, | |
3237 | MVPP2_PE_FIRST_FREE_TID); | |
3238 | if (tid < 0) | |
3239 | return tid; | |
3240 | ||
3241 | pe = kzalloc(sizeof(*pe), GFP_KERNEL); | |
3242 | if (!pe) | |
3243 | return -ENOMEM; | |
3244 | ||
3245 | mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_FLOWS); | |
3246 | pe->index = tid; | |
3247 | ||
3248 | /* Set flow ID*/ | |
3249 | mvpp2_prs_sram_ai_update(pe, port->id, MVPP2_PRS_FLOW_ID_MASK); | |
3250 | mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_LU_DONE_BIT, 1); | |
3251 | ||
3252 | /* Update shadow table */ | |
3253 | mvpp2_prs_shadow_set(port->priv, pe->index, MVPP2_PRS_LU_FLOWS); | |
3254 | } | |
3255 | ||
3256 | mvpp2_prs_tcam_port_map_set(pe, (1 << port->id)); | |
3257 | mvpp2_prs_hw_write(port->priv, pe); | |
3258 | kfree(pe); | |
3259 | ||
3260 | return 0; | |
3261 | } | |
3262 | ||
3263 | /* Classifier configuration routines */ | |
3264 | ||
3265 | /* Update classification flow table registers */ | |
3266 | static void mvpp2_cls_flow_write(struct mvpp2 *priv, | |
3267 | struct mvpp2_cls_flow_entry *fe) | |
3268 | { | |
3269 | mvpp2_write(priv, MVPP2_CLS_FLOW_INDEX_REG, fe->index); | |
3270 | mvpp2_write(priv, MVPP2_CLS_FLOW_TBL0_REG, fe->data[0]); | |
3271 | mvpp2_write(priv, MVPP2_CLS_FLOW_TBL1_REG, fe->data[1]); | |
3272 | mvpp2_write(priv, MVPP2_CLS_FLOW_TBL2_REG, fe->data[2]); | |
3273 | } | |
3274 | ||
3275 | /* Update classification lookup table register */ | |
3276 | static void mvpp2_cls_lookup_write(struct mvpp2 *priv, | |
3277 | struct mvpp2_cls_lookup_entry *le) | |
3278 | { | |
3279 | u32 val; | |
3280 | ||
3281 | val = (le->way << MVPP2_CLS_LKP_INDEX_WAY_OFFS) | le->lkpid; | |
3282 | mvpp2_write(priv, MVPP2_CLS_LKP_INDEX_REG, val); | |
3283 | mvpp2_write(priv, MVPP2_CLS_LKP_TBL_REG, le->data); | |
3284 | } | |
3285 | ||
3286 | /* Classifier default initialization */ | |
3287 | static void mvpp2_cls_init(struct mvpp2 *priv) | |
3288 | { | |
3289 | struct mvpp2_cls_lookup_entry le; | |
3290 | struct mvpp2_cls_flow_entry fe; | |
3291 | int index; | |
3292 | ||
3293 | /* Enable classifier */ | |
3294 | mvpp2_write(priv, MVPP2_CLS_MODE_REG, MVPP2_CLS_MODE_ACTIVE_MASK); | |
3295 | ||
3296 | /* Clear classifier flow table */ | |
3297 | memset(&fe.data, 0, MVPP2_CLS_FLOWS_TBL_DATA_WORDS); | |
3298 | for (index = 0; index < MVPP2_CLS_FLOWS_TBL_SIZE; index++) { | |
3299 | fe.index = index; | |
3300 | mvpp2_cls_flow_write(priv, &fe); | |
3301 | } | |
3302 | ||
3303 | /* Clear classifier lookup table */ | |
3304 | le.data = 0; | |
3305 | for (index = 0; index < MVPP2_CLS_LKP_TBL_SIZE; index++) { | |
3306 | le.lkpid = index; | |
3307 | le.way = 0; | |
3308 | mvpp2_cls_lookup_write(priv, &le); | |
3309 | ||
3310 | le.way = 1; | |
3311 | mvpp2_cls_lookup_write(priv, &le); | |
3312 | } | |
3313 | } | |
3314 | ||
3315 | static void mvpp2_cls_port_config(struct mvpp2_port *port) | |
3316 | { | |
3317 | struct mvpp2_cls_lookup_entry le; | |
3318 | u32 val; | |
3319 | ||
3320 | /* Set way for the port */ | |
3321 | val = mvpp2_read(port->priv, MVPP2_CLS_PORT_WAY_REG); | |
3322 | val &= ~MVPP2_CLS_PORT_WAY_MASK(port->id); | |
3323 | mvpp2_write(port->priv, MVPP2_CLS_PORT_WAY_REG, val); | |
3324 | ||
3325 | /* Pick the entry to be accessed in lookup ID decoding table | |
3326 | * according to the way and lkpid. | |
3327 | */ | |
3328 | le.lkpid = port->id; | |
3329 | le.way = 0; | |
3330 | le.data = 0; | |
3331 | ||
3332 | /* Set initial CPU queue for receiving packets */ | |
3333 | le.data &= ~MVPP2_CLS_LKP_TBL_RXQ_MASK; | |
3334 | le.data |= port->first_rxq; | |
3335 | ||
3336 | /* Disable classification engines */ | |
3337 | le.data &= ~MVPP2_CLS_LKP_TBL_LOOKUP_EN_MASK; | |
3338 | ||
3339 | /* Update lookup ID table entry */ | |
3340 | mvpp2_cls_lookup_write(port->priv, &le); | |
3341 | } | |
3342 | ||
3343 | /* Set CPU queue number for oversize packets */ | |
3344 | static void mvpp2_cls_oversize_rxq_set(struct mvpp2_port *port) | |
3345 | { | |
3346 | u32 val; | |
3347 | ||
3348 | mvpp2_write(port->priv, MVPP2_CLS_OVERSIZE_RXQ_LOW_REG(port->id), | |
3349 | port->first_rxq & MVPP2_CLS_OVERSIZE_RXQ_LOW_MASK); | |
3350 | ||
3351 | mvpp2_write(port->priv, MVPP2_CLS_SWFWD_P2HQ_REG(port->id), | |
3352 | (port->first_rxq >> MVPP2_CLS_OVERSIZE_RXQ_LOW_BITS)); | |
3353 | ||
3354 | val = mvpp2_read(port->priv, MVPP2_CLS_SWFWD_PCTRL_REG); | |
3355 | val |= MVPP2_CLS_SWFWD_PCTRL_MASK(port->id); | |
3356 | mvpp2_write(port->priv, MVPP2_CLS_SWFWD_PCTRL_REG, val); | |
3357 | } | |
3358 | ||
3359 | /* Buffer Manager configuration routines */ | |
3360 | ||
3361 | /* Create pool */ | |
3362 | static int mvpp2_bm_pool_create(struct platform_device *pdev, | |
3363 | struct mvpp2 *priv, | |
3364 | struct mvpp2_bm_pool *bm_pool, int size) | |
3365 | { | |
3366 | int size_bytes; | |
3367 | u32 val; | |
3368 | ||
3369 | size_bytes = sizeof(u32) * size; | |
3370 | bm_pool->virt_addr = dma_alloc_coherent(&pdev->dev, size_bytes, | |
3371 | &bm_pool->phys_addr, | |
3372 | GFP_KERNEL); | |
3373 | if (!bm_pool->virt_addr) | |
3374 | return -ENOMEM; | |
3375 | ||
3376 | if (!IS_ALIGNED((u32)bm_pool->virt_addr, MVPP2_BM_POOL_PTR_ALIGN)) { | |
3377 | dma_free_coherent(&pdev->dev, size_bytes, bm_pool->virt_addr, | |
3378 | bm_pool->phys_addr); | |
3379 | dev_err(&pdev->dev, "BM pool %d is not %d bytes aligned\n", | |
3380 | bm_pool->id, MVPP2_BM_POOL_PTR_ALIGN); | |
3381 | return -ENOMEM; | |
3382 | } | |
3383 | ||
3384 | mvpp2_write(priv, MVPP2_BM_POOL_BASE_REG(bm_pool->id), | |
3385 | bm_pool->phys_addr); | |
3386 | mvpp2_write(priv, MVPP2_BM_POOL_SIZE_REG(bm_pool->id), size); | |
3387 | ||
3388 | val = mvpp2_read(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id)); | |
3389 | val |= MVPP2_BM_START_MASK; | |
3390 | mvpp2_write(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id), val); | |
3391 | ||
3392 | bm_pool->type = MVPP2_BM_FREE; | |
3393 | bm_pool->size = size; | |
3394 | bm_pool->pkt_size = 0; | |
3395 | bm_pool->buf_num = 0; | |
3396 | atomic_set(&bm_pool->in_use, 0); | |
3f518509 MW |
3397 | |
3398 | return 0; | |
3399 | } | |
3400 | ||
3401 | /* Set pool buffer size */ | |
3402 | static void mvpp2_bm_pool_bufsize_set(struct mvpp2 *priv, | |
3403 | struct mvpp2_bm_pool *bm_pool, | |
3404 | int buf_size) | |
3405 | { | |
3406 | u32 val; | |
3407 | ||
3408 | bm_pool->buf_size = buf_size; | |
3409 | ||
3410 | val = ALIGN(buf_size, 1 << MVPP2_POOL_BUF_SIZE_OFFSET); | |
3411 | mvpp2_write(priv, MVPP2_POOL_BUF_SIZE_REG(bm_pool->id), val); | |
3412 | } | |
3413 | ||
7861f12b | 3414 | /* Free all buffers from the pool */ |
4229d502 MW |
3415 | static void mvpp2_bm_bufs_free(struct device *dev, struct mvpp2 *priv, |
3416 | struct mvpp2_bm_pool *bm_pool) | |
3f518509 MW |
3417 | { |
3418 | int i; | |
3419 | ||
7861f12b | 3420 | for (i = 0; i < bm_pool->buf_num; i++) { |
4229d502 | 3421 | dma_addr_t buf_phys_addr; |
3f518509 MW |
3422 | u32 vaddr; |
3423 | ||
dbedd44e | 3424 | /* Get buffer virtual address (indirect access) */ |
4229d502 MW |
3425 | buf_phys_addr = mvpp2_read(priv, |
3426 | MVPP2_BM_PHY_ALLOC_REG(bm_pool->id)); | |
3f518509 | 3427 | vaddr = mvpp2_read(priv, MVPP2_BM_VIRT_ALLOC_REG); |
4229d502 MW |
3428 | |
3429 | dma_unmap_single(dev, buf_phys_addr, | |
3430 | bm_pool->buf_size, DMA_FROM_DEVICE); | |
3431 | ||
3f518509 MW |
3432 | if (!vaddr) |
3433 | break; | |
3434 | dev_kfree_skb_any((struct sk_buff *)vaddr); | |
3435 | } | |
3436 | ||
3437 | /* Update BM driver with number of buffers removed from pool */ | |
3438 | bm_pool->buf_num -= i; | |
3f518509 MW |
3439 | } |
3440 | ||
3441 | /* Cleanup pool */ | |
3442 | static int mvpp2_bm_pool_destroy(struct platform_device *pdev, | |
3443 | struct mvpp2 *priv, | |
3444 | struct mvpp2_bm_pool *bm_pool) | |
3445 | { | |
3f518509 MW |
3446 | u32 val; |
3447 | ||
4229d502 | 3448 | mvpp2_bm_bufs_free(&pdev->dev, priv, bm_pool); |
d74c96c1 | 3449 | if (bm_pool->buf_num) { |
3f518509 MW |
3450 | WARN(1, "cannot free all buffers in pool %d\n", bm_pool->id); |
3451 | return 0; | |
3452 | } | |
3453 | ||
3454 | val = mvpp2_read(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id)); | |
3455 | val |= MVPP2_BM_STOP_MASK; | |
3456 | mvpp2_write(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id), val); | |
3457 | ||
3458 | dma_free_coherent(&pdev->dev, sizeof(u32) * bm_pool->size, | |
3459 | bm_pool->virt_addr, | |
3460 | bm_pool->phys_addr); | |
3461 | return 0; | |
3462 | } | |
3463 | ||
3464 | static int mvpp2_bm_pools_init(struct platform_device *pdev, | |
3465 | struct mvpp2 *priv) | |
3466 | { | |
3467 | int i, err, size; | |
3468 | struct mvpp2_bm_pool *bm_pool; | |
3469 | ||
3470 | /* Create all pools with maximum size */ | |
3471 | size = MVPP2_BM_POOL_SIZE_MAX; | |
3472 | for (i = 0; i < MVPP2_BM_POOLS_NUM; i++) { | |
3473 | bm_pool = &priv->bm_pools[i]; | |
3474 | bm_pool->id = i; | |
3475 | err = mvpp2_bm_pool_create(pdev, priv, bm_pool, size); | |
3476 | if (err) | |
3477 | goto err_unroll_pools; | |
3478 | mvpp2_bm_pool_bufsize_set(priv, bm_pool, 0); | |
3479 | } | |
3480 | return 0; | |
3481 | ||
3482 | err_unroll_pools: | |
3483 | dev_err(&pdev->dev, "failed to create BM pool %d, size %d\n", i, size); | |
3484 | for (i = i - 1; i >= 0; i--) | |
3485 | mvpp2_bm_pool_destroy(pdev, priv, &priv->bm_pools[i]); | |
3486 | return err; | |
3487 | } | |
3488 | ||
3489 | static int mvpp2_bm_init(struct platform_device *pdev, struct mvpp2 *priv) | |
3490 | { | |
3491 | int i, err; | |
3492 | ||
3493 | for (i = 0; i < MVPP2_BM_POOLS_NUM; i++) { | |
3494 | /* Mask BM all interrupts */ | |
3495 | mvpp2_write(priv, MVPP2_BM_INTR_MASK_REG(i), 0); | |
3496 | /* Clear BM cause register */ | |
3497 | mvpp2_write(priv, MVPP2_BM_INTR_CAUSE_REG(i), 0); | |
3498 | } | |
3499 | ||
3500 | /* Allocate and initialize BM pools */ | |
3501 | priv->bm_pools = devm_kcalloc(&pdev->dev, MVPP2_BM_POOLS_NUM, | |
3502 | sizeof(struct mvpp2_bm_pool), GFP_KERNEL); | |
3503 | if (!priv->bm_pools) | |
3504 | return -ENOMEM; | |
3505 | ||
3506 | err = mvpp2_bm_pools_init(pdev, priv); | |
3507 | if (err < 0) | |
3508 | return err; | |
3509 | return 0; | |
3510 | } | |
3511 | ||
3512 | /* Attach long pool to rxq */ | |
3513 | static void mvpp2_rxq_long_pool_set(struct mvpp2_port *port, | |
3514 | int lrxq, int long_pool) | |
3515 | { | |
3516 | u32 val; | |
3517 | int prxq; | |
3518 | ||
3519 | /* Get queue physical ID */ | |
3520 | prxq = port->rxqs[lrxq]->id; | |
3521 | ||
3522 | val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(prxq)); | |
3523 | val &= ~MVPP2_RXQ_POOL_LONG_MASK; | |
3524 | val |= ((long_pool << MVPP2_RXQ_POOL_LONG_OFFS) & | |
3525 | MVPP2_RXQ_POOL_LONG_MASK); | |
3526 | ||
3527 | mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(prxq), val); | |
3528 | } | |
3529 | ||
3530 | /* Attach short pool to rxq */ | |
3531 | static void mvpp2_rxq_short_pool_set(struct mvpp2_port *port, | |
3532 | int lrxq, int short_pool) | |
3533 | { | |
3534 | u32 val; | |
3535 | int prxq; | |
3536 | ||
3537 | /* Get queue physical ID */ | |
3538 | prxq = port->rxqs[lrxq]->id; | |
3539 | ||
3540 | val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(prxq)); | |
3541 | val &= ~MVPP2_RXQ_POOL_SHORT_MASK; | |
3542 | val |= ((short_pool << MVPP2_RXQ_POOL_SHORT_OFFS) & | |
3543 | MVPP2_RXQ_POOL_SHORT_MASK); | |
3544 | ||
3545 | mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(prxq), val); | |
3546 | } | |
3547 | ||
3548 | /* Allocate skb for BM pool */ | |
3549 | static struct sk_buff *mvpp2_skb_alloc(struct mvpp2_port *port, | |
3550 | struct mvpp2_bm_pool *bm_pool, | |
3551 | dma_addr_t *buf_phys_addr, | |
3552 | gfp_t gfp_mask) | |
3553 | { | |
3554 | struct sk_buff *skb; | |
3555 | dma_addr_t phys_addr; | |
3556 | ||
3557 | skb = __dev_alloc_skb(bm_pool->pkt_size, gfp_mask); | |
3558 | if (!skb) | |
3559 | return NULL; | |
3560 | ||
3561 | phys_addr = dma_map_single(port->dev->dev.parent, skb->head, | |
3562 | MVPP2_RX_BUF_SIZE(bm_pool->pkt_size), | |
3563 | DMA_FROM_DEVICE); | |
3564 | if (unlikely(dma_mapping_error(port->dev->dev.parent, phys_addr))) { | |
3565 | dev_kfree_skb_any(skb); | |
3566 | return NULL; | |
3567 | } | |
3568 | *buf_phys_addr = phys_addr; | |
3569 | ||
3570 | return skb; | |
3571 | } | |
3572 | ||
3573 | /* Set pool number in a BM cookie */ | |
3574 | static inline u32 mvpp2_bm_cookie_pool_set(u32 cookie, int pool) | |
3575 | { | |
3576 | u32 bm; | |
3577 | ||
3578 | bm = cookie & ~(0xFF << MVPP2_BM_COOKIE_POOL_OFFS); | |
3579 | bm |= ((pool & 0xFF) << MVPP2_BM_COOKIE_POOL_OFFS); | |
3580 | ||
3581 | return bm; | |
3582 | } | |
3583 | ||
3584 | /* Get pool number from a BM cookie */ | |
3585 | static inline int mvpp2_bm_cookie_pool_get(u32 cookie) | |
3586 | { | |
3587 | return (cookie >> MVPP2_BM_COOKIE_POOL_OFFS) & 0xFF; | |
3588 | } | |
3589 | ||
3590 | /* Release buffer to BM */ | |
3591 | static inline void mvpp2_bm_pool_put(struct mvpp2_port *port, int pool, | |
3592 | u32 buf_phys_addr, u32 buf_virt_addr) | |
3593 | { | |
3594 | mvpp2_write(port->priv, MVPP2_BM_VIRT_RLS_REG, buf_virt_addr); | |
3595 | mvpp2_write(port->priv, MVPP2_BM_PHY_RLS_REG(pool), buf_phys_addr); | |
3596 | } | |
3597 | ||
3598 | /* Release multicast buffer */ | |
3599 | static void mvpp2_bm_pool_mc_put(struct mvpp2_port *port, int pool, | |
3600 | u32 buf_phys_addr, u32 buf_virt_addr, | |
3601 | int mc_id) | |
3602 | { | |
3603 | u32 val = 0; | |
3604 | ||
3605 | val |= (mc_id & MVPP2_BM_MC_ID_MASK); | |
3606 | mvpp2_write(port->priv, MVPP2_BM_MC_RLS_REG, val); | |
3607 | ||
3608 | mvpp2_bm_pool_put(port, pool, | |
3609 | buf_phys_addr | MVPP2_BM_PHY_RLS_MC_BUFF_MASK, | |
3610 | buf_virt_addr); | |
3611 | } | |
3612 | ||
3613 | /* Refill BM pool */ | |
3614 | static void mvpp2_pool_refill(struct mvpp2_port *port, u32 bm, | |
3615 | u32 phys_addr, u32 cookie) | |
3616 | { | |
3617 | int pool = mvpp2_bm_cookie_pool_get(bm); | |
3618 | ||
3619 | mvpp2_bm_pool_put(port, pool, phys_addr, cookie); | |
3620 | } | |
3621 | ||
3622 | /* Allocate buffers for the pool */ | |
3623 | static int mvpp2_bm_bufs_add(struct mvpp2_port *port, | |
3624 | struct mvpp2_bm_pool *bm_pool, int buf_num) | |
3625 | { | |
3626 | struct sk_buff *skb; | |
3627 | int i, buf_size, total_size; | |
3628 | u32 bm; | |
3629 | dma_addr_t phys_addr; | |
3630 | ||
3631 | buf_size = MVPP2_RX_BUF_SIZE(bm_pool->pkt_size); | |
3632 | total_size = MVPP2_RX_TOTAL_SIZE(buf_size); | |
3633 | ||
3634 | if (buf_num < 0 || | |
3635 | (buf_num + bm_pool->buf_num > bm_pool->size)) { | |
3636 | netdev_err(port->dev, | |
3637 | "cannot allocate %d buffers for pool %d\n", | |
3638 | buf_num, bm_pool->id); | |
3639 | return 0; | |
3640 | } | |
3641 | ||
3642 | bm = mvpp2_bm_cookie_pool_set(0, bm_pool->id); | |
3643 | for (i = 0; i < buf_num; i++) { | |
3644 | skb = mvpp2_skb_alloc(port, bm_pool, &phys_addr, GFP_KERNEL); | |
3645 | if (!skb) | |
3646 | break; | |
3647 | ||
3648 | mvpp2_pool_refill(port, bm, (u32)phys_addr, (u32)skb); | |
3649 | } | |
3650 | ||
3651 | /* Update BM driver with number of buffers added to pool */ | |
3652 | bm_pool->buf_num += i; | |
3653 | bm_pool->in_use_thresh = bm_pool->buf_num / 4; | |
3654 | ||
3655 | netdev_dbg(port->dev, | |
3656 | "%s pool %d: pkt_size=%4d, buf_size=%4d, total_size=%4d\n", | |
3657 | bm_pool->type == MVPP2_BM_SWF_SHORT ? "short" : " long", | |
3658 | bm_pool->id, bm_pool->pkt_size, buf_size, total_size); | |
3659 | ||
3660 | netdev_dbg(port->dev, | |
3661 | "%s pool %d: %d of %d buffers added\n", | |
3662 | bm_pool->type == MVPP2_BM_SWF_SHORT ? "short" : " long", | |
3663 | bm_pool->id, i, buf_num); | |
3664 | return i; | |
3665 | } | |
3666 | ||
3667 | /* Notify the driver that BM pool is being used as specific type and return the | |
3668 | * pool pointer on success | |
3669 | */ | |
3670 | static struct mvpp2_bm_pool * | |
3671 | mvpp2_bm_pool_use(struct mvpp2_port *port, int pool, enum mvpp2_bm_type type, | |
3672 | int pkt_size) | |
3673 | { | |
3f518509 MW |
3674 | struct mvpp2_bm_pool *new_pool = &port->priv->bm_pools[pool]; |
3675 | int num; | |
3676 | ||
3677 | if (new_pool->type != MVPP2_BM_FREE && new_pool->type != type) { | |
3678 | netdev_err(port->dev, "mixing pool types is forbidden\n"); | |
3679 | return NULL; | |
3680 | } | |
3681 | ||
3f518509 MW |
3682 | if (new_pool->type == MVPP2_BM_FREE) |
3683 | new_pool->type = type; | |
3684 | ||
3685 | /* Allocate buffers in case BM pool is used as long pool, but packet | |
3686 | * size doesn't match MTU or BM pool hasn't being used yet | |
3687 | */ | |
3688 | if (((type == MVPP2_BM_SWF_LONG) && (pkt_size > new_pool->pkt_size)) || | |
3689 | (new_pool->pkt_size == 0)) { | |
3690 | int pkts_num; | |
3691 | ||
3692 | /* Set default buffer number or free all the buffers in case | |
3693 | * the pool is not empty | |
3694 | */ | |
3695 | pkts_num = new_pool->buf_num; | |
3696 | if (pkts_num == 0) | |
3697 | pkts_num = type == MVPP2_BM_SWF_LONG ? | |
3698 | MVPP2_BM_LONG_BUF_NUM : | |
3699 | MVPP2_BM_SHORT_BUF_NUM; | |
3700 | else | |
4229d502 MW |
3701 | mvpp2_bm_bufs_free(port->dev->dev.parent, |
3702 | port->priv, new_pool); | |
3f518509 MW |
3703 | |
3704 | new_pool->pkt_size = pkt_size; | |
3705 | ||
3706 | /* Allocate buffers for this pool */ | |
3707 | num = mvpp2_bm_bufs_add(port, new_pool, pkts_num); | |
3708 | if (num != pkts_num) { | |
3709 | WARN(1, "pool %d: %d of %d allocated\n", | |
3710 | new_pool->id, num, pkts_num); | |
3f518509 MW |
3711 | return NULL; |
3712 | } | |
3713 | } | |
3714 | ||
3715 | mvpp2_bm_pool_bufsize_set(port->priv, new_pool, | |
3716 | MVPP2_RX_BUF_SIZE(new_pool->pkt_size)); | |
3717 | ||
3f518509 MW |
3718 | return new_pool; |
3719 | } | |
3720 | ||
3721 | /* Initialize pools for swf */ | |
3722 | static int mvpp2_swf_bm_pool_init(struct mvpp2_port *port) | |
3723 | { | |
3f518509 MW |
3724 | int rxq; |
3725 | ||
3726 | if (!port->pool_long) { | |
3727 | port->pool_long = | |
3728 | mvpp2_bm_pool_use(port, MVPP2_BM_SWF_LONG_POOL(port->id), | |
3729 | MVPP2_BM_SWF_LONG, | |
3730 | port->pkt_size); | |
3731 | if (!port->pool_long) | |
3732 | return -ENOMEM; | |
3733 | ||
3f518509 | 3734 | port->pool_long->port_map |= (1 << port->id); |
3f518509 MW |
3735 | |
3736 | for (rxq = 0; rxq < rxq_number; rxq++) | |
3737 | mvpp2_rxq_long_pool_set(port, rxq, port->pool_long->id); | |
3738 | } | |
3739 | ||
3740 | if (!port->pool_short) { | |
3741 | port->pool_short = | |
3742 | mvpp2_bm_pool_use(port, MVPP2_BM_SWF_SHORT_POOL, | |
3743 | MVPP2_BM_SWF_SHORT, | |
3744 | MVPP2_BM_SHORT_PKT_SIZE); | |
3745 | if (!port->pool_short) | |
3746 | return -ENOMEM; | |
3747 | ||
3f518509 | 3748 | port->pool_short->port_map |= (1 << port->id); |
3f518509 MW |
3749 | |
3750 | for (rxq = 0; rxq < rxq_number; rxq++) | |
3751 | mvpp2_rxq_short_pool_set(port, rxq, | |
3752 | port->pool_short->id); | |
3753 | } | |
3754 | ||
3755 | return 0; | |
3756 | } | |
3757 | ||
3758 | static int mvpp2_bm_update_mtu(struct net_device *dev, int mtu) | |
3759 | { | |
3760 | struct mvpp2_port *port = netdev_priv(dev); | |
3761 | struct mvpp2_bm_pool *port_pool = port->pool_long; | |
3762 | int num, pkts_num = port_pool->buf_num; | |
3763 | int pkt_size = MVPP2_RX_PKT_SIZE(mtu); | |
3764 | ||
3765 | /* Update BM pool with new buffer size */ | |
4229d502 | 3766 | mvpp2_bm_bufs_free(dev->dev.parent, port->priv, port_pool); |
d74c96c1 | 3767 | if (port_pool->buf_num) { |
3f518509 MW |
3768 | WARN(1, "cannot free all buffers in pool %d\n", port_pool->id); |
3769 | return -EIO; | |
3770 | } | |
3771 | ||
3772 | port_pool->pkt_size = pkt_size; | |
3773 | num = mvpp2_bm_bufs_add(port, port_pool, pkts_num); | |
3774 | if (num != pkts_num) { | |
3775 | WARN(1, "pool %d: %d of %d allocated\n", | |
3776 | port_pool->id, num, pkts_num); | |
3777 | return -EIO; | |
3778 | } | |
3779 | ||
3780 | mvpp2_bm_pool_bufsize_set(port->priv, port_pool, | |
3781 | MVPP2_RX_BUF_SIZE(port_pool->pkt_size)); | |
3782 | dev->mtu = mtu; | |
3783 | netdev_update_features(dev); | |
3784 | return 0; | |
3785 | } | |
3786 | ||
3787 | static inline void mvpp2_interrupts_enable(struct mvpp2_port *port) | |
3788 | { | |
3789 | int cpu, cpu_mask = 0; | |
3790 | ||
3791 | for_each_present_cpu(cpu) | |
3792 | cpu_mask |= 1 << cpu; | |
3793 | mvpp2_write(port->priv, MVPP2_ISR_ENABLE_REG(port->id), | |
3794 | MVPP2_ISR_ENABLE_INTERRUPT(cpu_mask)); | |
3795 | } | |
3796 | ||
3797 | static inline void mvpp2_interrupts_disable(struct mvpp2_port *port) | |
3798 | { | |
3799 | int cpu, cpu_mask = 0; | |
3800 | ||
3801 | for_each_present_cpu(cpu) | |
3802 | cpu_mask |= 1 << cpu; | |
3803 | mvpp2_write(port->priv, MVPP2_ISR_ENABLE_REG(port->id), | |
3804 | MVPP2_ISR_DISABLE_INTERRUPT(cpu_mask)); | |
3805 | } | |
3806 | ||
3807 | /* Mask the current CPU's Rx/Tx interrupts */ | |
3808 | static void mvpp2_interrupts_mask(void *arg) | |
3809 | { | |
3810 | struct mvpp2_port *port = arg; | |
3811 | ||
3812 | mvpp2_write(port->priv, MVPP2_ISR_RX_TX_MASK_REG(port->id), 0); | |
3813 | } | |
3814 | ||
3815 | /* Unmask the current CPU's Rx/Tx interrupts */ | |
3816 | static void mvpp2_interrupts_unmask(void *arg) | |
3817 | { | |
3818 | struct mvpp2_port *port = arg; | |
3819 | ||
3820 | mvpp2_write(port->priv, MVPP2_ISR_RX_TX_MASK_REG(port->id), | |
3821 | (MVPP2_CAUSE_MISC_SUM_MASK | | |
3f518509 MW |
3822 | MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK)); |
3823 | } | |
3824 | ||
3825 | /* Port configuration routines */ | |
3826 | ||
3827 | static void mvpp2_port_mii_set(struct mvpp2_port *port) | |
3828 | { | |
08a23755 | 3829 | u32 val; |
3f518509 | 3830 | |
08a23755 MW |
3831 | val = readl(port->base + MVPP2_GMAC_CTRL_2_REG); |
3832 | ||
3833 | switch (port->phy_interface) { | |
3834 | case PHY_INTERFACE_MODE_SGMII: | |
3835 | val |= MVPP2_GMAC_INBAND_AN_MASK; | |
3836 | break; | |
3837 | case PHY_INTERFACE_MODE_RGMII: | |
3838 | val |= MVPP2_GMAC_PORT_RGMII_MASK; | |
3839 | default: | |
3840 | val &= ~MVPP2_GMAC_PCS_ENABLE_MASK; | |
3841 | } | |
3842 | ||
3843 | writel(val, port->base + MVPP2_GMAC_CTRL_2_REG); | |
3844 | } | |
3f518509 | 3845 | |
08a23755 MW |
3846 | static void mvpp2_port_fc_adv_enable(struct mvpp2_port *port) |
3847 | { | |
3848 | u32 val; | |
3849 | ||
3850 | val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG); | |
3851 | val |= MVPP2_GMAC_FC_ADV_EN; | |
3852 | writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG); | |
3f518509 MW |
3853 | } |
3854 | ||
3855 | static void mvpp2_port_enable(struct mvpp2_port *port) | |
3856 | { | |
3857 | u32 val; | |
3858 | ||
3859 | val = readl(port->base + MVPP2_GMAC_CTRL_0_REG); | |
3860 | val |= MVPP2_GMAC_PORT_EN_MASK; | |
3861 | val |= MVPP2_GMAC_MIB_CNTR_EN_MASK; | |
3862 | writel(val, port->base + MVPP2_GMAC_CTRL_0_REG); | |
3863 | } | |
3864 | ||
3865 | static void mvpp2_port_disable(struct mvpp2_port *port) | |
3866 | { | |
3867 | u32 val; | |
3868 | ||
3869 | val = readl(port->base + MVPP2_GMAC_CTRL_0_REG); | |
3870 | val &= ~(MVPP2_GMAC_PORT_EN_MASK); | |
3871 | writel(val, port->base + MVPP2_GMAC_CTRL_0_REG); | |
3872 | } | |
3873 | ||
3874 | /* Set IEEE 802.3x Flow Control Xon Packet Transmission Mode */ | |
3875 | static void mvpp2_port_periodic_xon_disable(struct mvpp2_port *port) | |
3876 | { | |
3877 | u32 val; | |
3878 | ||
3879 | val = readl(port->base + MVPP2_GMAC_CTRL_1_REG) & | |
3880 | ~MVPP2_GMAC_PERIODIC_XON_EN_MASK; | |
3881 | writel(val, port->base + MVPP2_GMAC_CTRL_1_REG); | |
3882 | } | |
3883 | ||
3884 | /* Configure loopback port */ | |
3885 | static void mvpp2_port_loopback_set(struct mvpp2_port *port) | |
3886 | { | |
3887 | u32 val; | |
3888 | ||
3889 | val = readl(port->base + MVPP2_GMAC_CTRL_1_REG); | |
3890 | ||
3891 | if (port->speed == 1000) | |
3892 | val |= MVPP2_GMAC_GMII_LB_EN_MASK; | |
3893 | else | |
3894 | val &= ~MVPP2_GMAC_GMII_LB_EN_MASK; | |
3895 | ||
3896 | if (port->phy_interface == PHY_INTERFACE_MODE_SGMII) | |
3897 | val |= MVPP2_GMAC_PCS_LB_EN_MASK; | |
3898 | else | |
3899 | val &= ~MVPP2_GMAC_PCS_LB_EN_MASK; | |
3900 | ||
3901 | writel(val, port->base + MVPP2_GMAC_CTRL_1_REG); | |
3902 | } | |
3903 | ||
3904 | static void mvpp2_port_reset(struct mvpp2_port *port) | |
3905 | { | |
3906 | u32 val; | |
3907 | ||
3908 | val = readl(port->base + MVPP2_GMAC_CTRL_2_REG) & | |
3909 | ~MVPP2_GMAC_PORT_RESET_MASK; | |
3910 | writel(val, port->base + MVPP2_GMAC_CTRL_2_REG); | |
3911 | ||
3912 | while (readl(port->base + MVPP2_GMAC_CTRL_2_REG) & | |
3913 | MVPP2_GMAC_PORT_RESET_MASK) | |
3914 | continue; | |
3915 | } | |
3916 | ||
3917 | /* Change maximum receive size of the port */ | |
3918 | static inline void mvpp2_gmac_max_rx_size_set(struct mvpp2_port *port) | |
3919 | { | |
3920 | u32 val; | |
3921 | ||
3922 | val = readl(port->base + MVPP2_GMAC_CTRL_0_REG); | |
3923 | val &= ~MVPP2_GMAC_MAX_RX_SIZE_MASK; | |
3924 | val |= (((port->pkt_size - MVPP2_MH_SIZE) / 2) << | |
3925 | MVPP2_GMAC_MAX_RX_SIZE_OFFS); | |
3926 | writel(val, port->base + MVPP2_GMAC_CTRL_0_REG); | |
3927 | } | |
3928 | ||
3929 | /* Set defaults to the MVPP2 port */ | |
3930 | static void mvpp2_defaults_set(struct mvpp2_port *port) | |
3931 | { | |
3932 | int tx_port_num, val, queue, ptxq, lrxq; | |
3933 | ||
3934 | /* Configure port to loopback if needed */ | |
3935 | if (port->flags & MVPP2_F_LOOPBACK) | |
3936 | mvpp2_port_loopback_set(port); | |
3937 | ||
3938 | /* Update TX FIFO MIN Threshold */ | |
3939 | val = readl(port->base + MVPP2_GMAC_PORT_FIFO_CFG_1_REG); | |
3940 | val &= ~MVPP2_GMAC_TX_FIFO_MIN_TH_ALL_MASK; | |
3941 | /* Min. TX threshold must be less than minimal packet length */ | |
3942 | val |= MVPP2_GMAC_TX_FIFO_MIN_TH_MASK(64 - 4 - 2); | |
3943 | writel(val, port->base + MVPP2_GMAC_PORT_FIFO_CFG_1_REG); | |
3944 | ||
3945 | /* Disable Legacy WRR, Disable EJP, Release from reset */ | |
3946 | tx_port_num = mvpp2_egress_port(port); | |
3947 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, | |
3948 | tx_port_num); | |
3949 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_CMD_1_REG, 0); | |
3950 | ||
3951 | /* Close bandwidth for all queues */ | |
3952 | for (queue = 0; queue < MVPP2_MAX_TXQ; queue++) { | |
3953 | ptxq = mvpp2_txq_phys(port->id, queue); | |
3954 | mvpp2_write(port->priv, | |
3955 | MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(ptxq), 0); | |
3956 | } | |
3957 | ||
3958 | /* Set refill period to 1 usec, refill tokens | |
3959 | * and bucket size to maximum | |
3960 | */ | |
3961 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_PERIOD_REG, | |
3962 | port->priv->tclk / USEC_PER_SEC); | |
3963 | val = mvpp2_read(port->priv, MVPP2_TXP_SCHED_REFILL_REG); | |
3964 | val &= ~MVPP2_TXP_REFILL_PERIOD_ALL_MASK; | |
3965 | val |= MVPP2_TXP_REFILL_PERIOD_MASK(1); | |
3966 | val |= MVPP2_TXP_REFILL_TOKENS_ALL_MASK; | |
3967 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_REFILL_REG, val); | |
3968 | val = MVPP2_TXP_TOKEN_SIZE_MAX; | |
3969 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_TOKEN_SIZE_REG, val); | |
3970 | ||
3971 | /* Set MaximumLowLatencyPacketSize value to 256 */ | |
3972 | mvpp2_write(port->priv, MVPP2_RX_CTRL_REG(port->id), | |
3973 | MVPP2_RX_USE_PSEUDO_FOR_CSUM_MASK | | |
3974 | MVPP2_RX_LOW_LATENCY_PKT_SIZE(256)); | |
3975 | ||
3976 | /* Enable Rx cache snoop */ | |
3977 | for (lrxq = 0; lrxq < rxq_number; lrxq++) { | |
3978 | queue = port->rxqs[lrxq]->id; | |
3979 | val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(queue)); | |
3980 | val |= MVPP2_SNOOP_PKT_SIZE_MASK | | |
3981 | MVPP2_SNOOP_BUF_HDR_MASK; | |
3982 | mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(queue), val); | |
3983 | } | |
3984 | ||
3985 | /* At default, mask all interrupts to all present cpus */ | |
3986 | mvpp2_interrupts_disable(port); | |
3987 | } | |
3988 | ||
3989 | /* Enable/disable receiving packets */ | |
3990 | static void mvpp2_ingress_enable(struct mvpp2_port *port) | |
3991 | { | |
3992 | u32 val; | |
3993 | int lrxq, queue; | |
3994 | ||
3995 | for (lrxq = 0; lrxq < rxq_number; lrxq++) { | |
3996 | queue = port->rxqs[lrxq]->id; | |
3997 | val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(queue)); | |
3998 | val &= ~MVPP2_RXQ_DISABLE_MASK; | |
3999 | mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(queue), val); | |
4000 | } | |
4001 | } | |
4002 | ||
4003 | static void mvpp2_ingress_disable(struct mvpp2_port *port) | |
4004 | { | |
4005 | u32 val; | |
4006 | int lrxq, queue; | |
4007 | ||
4008 | for (lrxq = 0; lrxq < rxq_number; lrxq++) { | |
4009 | queue = port->rxqs[lrxq]->id; | |
4010 | val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(queue)); | |
4011 | val |= MVPP2_RXQ_DISABLE_MASK; | |
4012 | mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(queue), val); | |
4013 | } | |
4014 | } | |
4015 | ||
4016 | /* Enable transmit via physical egress queue | |
4017 | * - HW starts take descriptors from DRAM | |
4018 | */ | |
4019 | static void mvpp2_egress_enable(struct mvpp2_port *port) | |
4020 | { | |
4021 | u32 qmap; | |
4022 | int queue; | |
4023 | int tx_port_num = mvpp2_egress_port(port); | |
4024 | ||
4025 | /* Enable all initialized TXs. */ | |
4026 | qmap = 0; | |
4027 | for (queue = 0; queue < txq_number; queue++) { | |
4028 | struct mvpp2_tx_queue *txq = port->txqs[queue]; | |
4029 | ||
4030 | if (txq->descs != NULL) | |
4031 | qmap |= (1 << queue); | |
4032 | } | |
4033 | ||
4034 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num); | |
4035 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG, qmap); | |
4036 | } | |
4037 | ||
4038 | /* Disable transmit via physical egress queue | |
4039 | * - HW doesn't take descriptors from DRAM | |
4040 | */ | |
4041 | static void mvpp2_egress_disable(struct mvpp2_port *port) | |
4042 | { | |
4043 | u32 reg_data; | |
4044 | int delay; | |
4045 | int tx_port_num = mvpp2_egress_port(port); | |
4046 | ||
4047 | /* Issue stop command for active channels only */ | |
4048 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num); | |
4049 | reg_data = (mvpp2_read(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG)) & | |
4050 | MVPP2_TXP_SCHED_ENQ_MASK; | |
4051 | if (reg_data != 0) | |
4052 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG, | |
4053 | (reg_data << MVPP2_TXP_SCHED_DISQ_OFFSET)); | |
4054 | ||
4055 | /* Wait for all Tx activity to terminate. */ | |
4056 | delay = 0; | |
4057 | do { | |
4058 | if (delay >= MVPP2_TX_DISABLE_TIMEOUT_MSEC) { | |
4059 | netdev_warn(port->dev, | |
4060 | "Tx stop timed out, status=0x%08x\n", | |
4061 | reg_data); | |
4062 | break; | |
4063 | } | |
4064 | mdelay(1); | |
4065 | delay++; | |
4066 | ||
4067 | /* Check port TX Command register that all | |
4068 | * Tx queues are stopped | |
4069 | */ | |
4070 | reg_data = mvpp2_read(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG); | |
4071 | } while (reg_data & MVPP2_TXP_SCHED_ENQ_MASK); | |
4072 | } | |
4073 | ||
4074 | /* Rx descriptors helper methods */ | |
4075 | ||
4076 | /* Get number of Rx descriptors occupied by received packets */ | |
4077 | static inline int | |
4078 | mvpp2_rxq_received(struct mvpp2_port *port, int rxq_id) | |
4079 | { | |
4080 | u32 val = mvpp2_read(port->priv, MVPP2_RXQ_STATUS_REG(rxq_id)); | |
4081 | ||
4082 | return val & MVPP2_RXQ_OCCUPIED_MASK; | |
4083 | } | |
4084 | ||
4085 | /* Update Rx queue status with the number of occupied and available | |
4086 | * Rx descriptor slots. | |
4087 | */ | |
4088 | static inline void | |
4089 | mvpp2_rxq_status_update(struct mvpp2_port *port, int rxq_id, | |
4090 | int used_count, int free_count) | |
4091 | { | |
4092 | /* Decrement the number of used descriptors and increment count | |
4093 | * increment the number of free descriptors. | |
4094 | */ | |
4095 | u32 val = used_count | (free_count << MVPP2_RXQ_NUM_NEW_OFFSET); | |
4096 | ||
4097 | mvpp2_write(port->priv, MVPP2_RXQ_STATUS_UPDATE_REG(rxq_id), val); | |
4098 | } | |
4099 | ||
4100 | /* Get pointer to next RX descriptor to be processed by SW */ | |
4101 | static inline struct mvpp2_rx_desc * | |
4102 | mvpp2_rxq_next_desc_get(struct mvpp2_rx_queue *rxq) | |
4103 | { | |
4104 | int rx_desc = rxq->next_desc_to_proc; | |
4105 | ||
4106 | rxq->next_desc_to_proc = MVPP2_QUEUE_NEXT_DESC(rxq, rx_desc); | |
4107 | prefetch(rxq->descs + rxq->next_desc_to_proc); | |
4108 | return rxq->descs + rx_desc; | |
4109 | } | |
4110 | ||
4111 | /* Set rx queue offset */ | |
4112 | static void mvpp2_rxq_offset_set(struct mvpp2_port *port, | |
4113 | int prxq, int offset) | |
4114 | { | |
4115 | u32 val; | |
4116 | ||
4117 | /* Convert offset from bytes to units of 32 bytes */ | |
4118 | offset = offset >> 5; | |
4119 | ||
4120 | val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(prxq)); | |
4121 | val &= ~MVPP2_RXQ_PACKET_OFFSET_MASK; | |
4122 | ||
4123 | /* Offset is in */ | |
4124 | val |= ((offset << MVPP2_RXQ_PACKET_OFFSET_OFFS) & | |
4125 | MVPP2_RXQ_PACKET_OFFSET_MASK); | |
4126 | ||
4127 | mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(prxq), val); | |
4128 | } | |
4129 | ||
4130 | /* Obtain BM cookie information from descriptor */ | |
4131 | static u32 mvpp2_bm_cookie_build(struct mvpp2_rx_desc *rx_desc) | |
4132 | { | |
4133 | int pool = (rx_desc->status & MVPP2_RXD_BM_POOL_ID_MASK) >> | |
4134 | MVPP2_RXD_BM_POOL_ID_OFFS; | |
4135 | int cpu = smp_processor_id(); | |
4136 | ||
4137 | return ((pool & 0xFF) << MVPP2_BM_COOKIE_POOL_OFFS) | | |
4138 | ((cpu & 0xFF) << MVPP2_BM_COOKIE_CPU_OFFS); | |
4139 | } | |
4140 | ||
4141 | /* Tx descriptors helper methods */ | |
4142 | ||
4143 | /* Get number of Tx descriptors waiting to be transmitted by HW */ | |
4144 | static int mvpp2_txq_pend_desc_num_get(struct mvpp2_port *port, | |
4145 | struct mvpp2_tx_queue *txq) | |
4146 | { | |
4147 | u32 val; | |
4148 | ||
4149 | mvpp2_write(port->priv, MVPP2_TXQ_NUM_REG, txq->id); | |
4150 | val = mvpp2_read(port->priv, MVPP2_TXQ_PENDING_REG); | |
4151 | ||
4152 | return val & MVPP2_TXQ_PENDING_MASK; | |
4153 | } | |
4154 | ||
4155 | /* Get pointer to next Tx descriptor to be processed (send) by HW */ | |
4156 | static struct mvpp2_tx_desc * | |
4157 | mvpp2_txq_next_desc_get(struct mvpp2_tx_queue *txq) | |
4158 | { | |
4159 | int tx_desc = txq->next_desc_to_proc; | |
4160 | ||
4161 | txq->next_desc_to_proc = MVPP2_QUEUE_NEXT_DESC(txq, tx_desc); | |
4162 | return txq->descs + tx_desc; | |
4163 | } | |
4164 | ||
4165 | /* Update HW with number of aggregated Tx descriptors to be sent */ | |
4166 | static void mvpp2_aggr_txq_pend_desc_add(struct mvpp2_port *port, int pending) | |
4167 | { | |
4168 | /* aggregated access - relevant TXQ number is written in TX desc */ | |
4169 | mvpp2_write(port->priv, MVPP2_AGGR_TXQ_UPDATE_REG, pending); | |
4170 | } | |
4171 | ||
4172 | ||
4173 | /* Check if there are enough free descriptors in aggregated txq. | |
4174 | * If not, update the number of occupied descriptors and repeat the check. | |
4175 | */ | |
4176 | static int mvpp2_aggr_desc_num_check(struct mvpp2 *priv, | |
4177 | struct mvpp2_tx_queue *aggr_txq, int num) | |
4178 | { | |
4179 | if ((aggr_txq->count + num) > aggr_txq->size) { | |
4180 | /* Update number of occupied aggregated Tx descriptors */ | |
4181 | int cpu = smp_processor_id(); | |
4182 | u32 val = mvpp2_read(priv, MVPP2_AGGR_TXQ_STATUS_REG(cpu)); | |
4183 | ||
4184 | aggr_txq->count = val & MVPP2_AGGR_TXQ_PENDING_MASK; | |
4185 | } | |
4186 | ||
4187 | if ((aggr_txq->count + num) > aggr_txq->size) | |
4188 | return -ENOMEM; | |
4189 | ||
4190 | return 0; | |
4191 | } | |
4192 | ||
4193 | /* Reserved Tx descriptors allocation request */ | |
4194 | static int mvpp2_txq_alloc_reserved_desc(struct mvpp2 *priv, | |
4195 | struct mvpp2_tx_queue *txq, int num) | |
4196 | { | |
4197 | u32 val; | |
4198 | ||
4199 | val = (txq->id << MVPP2_TXQ_RSVD_REQ_Q_OFFSET) | num; | |
4200 | mvpp2_write(priv, MVPP2_TXQ_RSVD_REQ_REG, val); | |
4201 | ||
4202 | val = mvpp2_read(priv, MVPP2_TXQ_RSVD_RSLT_REG); | |
4203 | ||
4204 | return val & MVPP2_TXQ_RSVD_RSLT_MASK; | |
4205 | } | |
4206 | ||
4207 | /* Check if there are enough reserved descriptors for transmission. | |
4208 | * If not, request chunk of reserved descriptors and check again. | |
4209 | */ | |
4210 | static int mvpp2_txq_reserved_desc_num_proc(struct mvpp2 *priv, | |
4211 | struct mvpp2_tx_queue *txq, | |
4212 | struct mvpp2_txq_pcpu *txq_pcpu, | |
4213 | int num) | |
4214 | { | |
4215 | int req, cpu, desc_count; | |
4216 | ||
4217 | if (txq_pcpu->reserved_num >= num) | |
4218 | return 0; | |
4219 | ||
4220 | /* Not enough descriptors reserved! Update the reserved descriptor | |
4221 | * count and check again. | |
4222 | */ | |
4223 | ||
4224 | desc_count = 0; | |
4225 | /* Compute total of used descriptors */ | |
4226 | for_each_present_cpu(cpu) { | |
4227 | struct mvpp2_txq_pcpu *txq_pcpu_aux; | |
4228 | ||
4229 | txq_pcpu_aux = per_cpu_ptr(txq->pcpu, cpu); | |
4230 | desc_count += txq_pcpu_aux->count; | |
4231 | desc_count += txq_pcpu_aux->reserved_num; | |
4232 | } | |
4233 | ||
4234 | req = max(MVPP2_CPU_DESC_CHUNK, num - txq_pcpu->reserved_num); | |
4235 | desc_count += req; | |
4236 | ||
4237 | if (desc_count > | |
4238 | (txq->size - (num_present_cpus() * MVPP2_CPU_DESC_CHUNK))) | |
4239 | return -ENOMEM; | |
4240 | ||
4241 | txq_pcpu->reserved_num += mvpp2_txq_alloc_reserved_desc(priv, txq, req); | |
4242 | ||
4243 | /* OK, the descriptor cound has been updated: check again. */ | |
4244 | if (txq_pcpu->reserved_num < num) | |
4245 | return -ENOMEM; | |
4246 | return 0; | |
4247 | } | |
4248 | ||
4249 | /* Release the last allocated Tx descriptor. Useful to handle DMA | |
4250 | * mapping failures in the Tx path. | |
4251 | */ | |
4252 | static void mvpp2_txq_desc_put(struct mvpp2_tx_queue *txq) | |
4253 | { | |
4254 | if (txq->next_desc_to_proc == 0) | |
4255 | txq->next_desc_to_proc = txq->last_desc - 1; | |
4256 | else | |
4257 | txq->next_desc_to_proc--; | |
4258 | } | |
4259 | ||
4260 | /* Set Tx descriptors fields relevant for CSUM calculation */ | |
4261 | static u32 mvpp2_txq_desc_csum(int l3_offs, int l3_proto, | |
4262 | int ip_hdr_len, int l4_proto) | |
4263 | { | |
4264 | u32 command; | |
4265 | ||
4266 | /* fields: L3_offset, IP_hdrlen, L3_type, G_IPv4_chk, | |
4267 | * G_L4_chk, L4_type required only for checksum calculation | |
4268 | */ | |
4269 | command = (l3_offs << MVPP2_TXD_L3_OFF_SHIFT); | |
4270 | command |= (ip_hdr_len << MVPP2_TXD_IP_HLEN_SHIFT); | |
4271 | command |= MVPP2_TXD_IP_CSUM_DISABLE; | |
4272 | ||
4273 | if (l3_proto == swab16(ETH_P_IP)) { | |
4274 | command &= ~MVPP2_TXD_IP_CSUM_DISABLE; /* enable IPv4 csum */ | |
4275 | command &= ~MVPP2_TXD_L3_IP6; /* enable IPv4 */ | |
4276 | } else { | |
4277 | command |= MVPP2_TXD_L3_IP6; /* enable IPv6 */ | |
4278 | } | |
4279 | ||
4280 | if (l4_proto == IPPROTO_TCP) { | |
4281 | command &= ~MVPP2_TXD_L4_UDP; /* enable TCP */ | |
4282 | command &= ~MVPP2_TXD_L4_CSUM_FRAG; /* generate L4 csum */ | |
4283 | } else if (l4_proto == IPPROTO_UDP) { | |
4284 | command |= MVPP2_TXD_L4_UDP; /* enable UDP */ | |
4285 | command &= ~MVPP2_TXD_L4_CSUM_FRAG; /* generate L4 csum */ | |
4286 | } else { | |
4287 | command |= MVPP2_TXD_L4_CSUM_NOT; | |
4288 | } | |
4289 | ||
4290 | return command; | |
4291 | } | |
4292 | ||
4293 | /* Get number of sent descriptors and decrement counter. | |
4294 | * The number of sent descriptors is returned. | |
4295 | * Per-CPU access | |
4296 | */ | |
4297 | static inline int mvpp2_txq_sent_desc_proc(struct mvpp2_port *port, | |
4298 | struct mvpp2_tx_queue *txq) | |
4299 | { | |
4300 | u32 val; | |
4301 | ||
4302 | /* Reading status reg resets transmitted descriptor counter */ | |
4303 | val = mvpp2_read(port->priv, MVPP2_TXQ_SENT_REG(txq->id)); | |
4304 | ||
4305 | return (val & MVPP2_TRANSMITTED_COUNT_MASK) >> | |
4306 | MVPP2_TRANSMITTED_COUNT_OFFSET; | |
4307 | } | |
4308 | ||
4309 | static void mvpp2_txq_sent_counter_clear(void *arg) | |
4310 | { | |
4311 | struct mvpp2_port *port = arg; | |
4312 | int queue; | |
4313 | ||
4314 | for (queue = 0; queue < txq_number; queue++) { | |
4315 | int id = port->txqs[queue]->id; | |
4316 | ||
4317 | mvpp2_read(port->priv, MVPP2_TXQ_SENT_REG(id)); | |
4318 | } | |
4319 | } | |
4320 | ||
4321 | /* Set max sizes for Tx queues */ | |
4322 | static void mvpp2_txp_max_tx_size_set(struct mvpp2_port *port) | |
4323 | { | |
4324 | u32 val, size, mtu; | |
4325 | int txq, tx_port_num; | |
4326 | ||
4327 | mtu = port->pkt_size * 8; | |
4328 | if (mtu > MVPP2_TXP_MTU_MAX) | |
4329 | mtu = MVPP2_TXP_MTU_MAX; | |
4330 | ||
4331 | /* WA for wrong Token bucket update: Set MTU value = 3*real MTU value */ | |
4332 | mtu = 3 * mtu; | |
4333 | ||
4334 | /* Indirect access to registers */ | |
4335 | tx_port_num = mvpp2_egress_port(port); | |
4336 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num); | |
4337 | ||
4338 | /* Set MTU */ | |
4339 | val = mvpp2_read(port->priv, MVPP2_TXP_SCHED_MTU_REG); | |
4340 | val &= ~MVPP2_TXP_MTU_MAX; | |
4341 | val |= mtu; | |
4342 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_MTU_REG, val); | |
4343 | ||
4344 | /* TXP token size and all TXQs token size must be larger that MTU */ | |
4345 | val = mvpp2_read(port->priv, MVPP2_TXP_SCHED_TOKEN_SIZE_REG); | |
4346 | size = val & MVPP2_TXP_TOKEN_SIZE_MAX; | |
4347 | if (size < mtu) { | |
4348 | size = mtu; | |
4349 | val &= ~MVPP2_TXP_TOKEN_SIZE_MAX; | |
4350 | val |= size; | |
4351 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_TOKEN_SIZE_REG, val); | |
4352 | } | |
4353 | ||
4354 | for (txq = 0; txq < txq_number; txq++) { | |
4355 | val = mvpp2_read(port->priv, | |
4356 | MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(txq)); | |
4357 | size = val & MVPP2_TXQ_TOKEN_SIZE_MAX; | |
4358 | ||
4359 | if (size < mtu) { | |
4360 | size = mtu; | |
4361 | val &= ~MVPP2_TXQ_TOKEN_SIZE_MAX; | |
4362 | val |= size; | |
4363 | mvpp2_write(port->priv, | |
4364 | MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(txq), | |
4365 | val); | |
4366 | } | |
4367 | } | |
4368 | } | |
4369 | ||
4370 | /* Set the number of packets that will be received before Rx interrupt | |
4371 | * will be generated by HW. | |
4372 | */ | |
4373 | static void mvpp2_rx_pkts_coal_set(struct mvpp2_port *port, | |
4374 | struct mvpp2_rx_queue *rxq, u32 pkts) | |
4375 | { | |
4376 | u32 val; | |
4377 | ||
4378 | val = (pkts & MVPP2_OCCUPIED_THRESH_MASK); | |
4379 | mvpp2_write(port->priv, MVPP2_RXQ_NUM_REG, rxq->id); | |
4380 | mvpp2_write(port->priv, MVPP2_RXQ_THRESH_REG, val); | |
4381 | ||
4382 | rxq->pkts_coal = pkts; | |
4383 | } | |
4384 | ||
4385 | /* Set the time delay in usec before Rx interrupt */ | |
4386 | static void mvpp2_rx_time_coal_set(struct mvpp2_port *port, | |
4387 | struct mvpp2_rx_queue *rxq, u32 usec) | |
4388 | { | |
4389 | u32 val; | |
4390 | ||
4391 | val = (port->priv->tclk / USEC_PER_SEC) * usec; | |
4392 | mvpp2_write(port->priv, MVPP2_ISR_RX_THRESHOLD_REG(rxq->id), val); | |
4393 | ||
4394 | rxq->time_coal = usec; | |
4395 | } | |
4396 | ||
3f518509 MW |
4397 | /* Free Tx queue skbuffs */ |
4398 | static void mvpp2_txq_bufs_free(struct mvpp2_port *port, | |
4399 | struct mvpp2_tx_queue *txq, | |
4400 | struct mvpp2_txq_pcpu *txq_pcpu, int num) | |
4401 | { | |
4402 | int i; | |
4403 | ||
4404 | for (i = 0; i < num; i++) { | |
71ce391d MW |
4405 | dma_addr_t buf_phys_addr = |
4406 | txq_pcpu->tx_buffs[txq_pcpu->txq_get_index]; | |
3f518509 MW |
4407 | struct sk_buff *skb = txq_pcpu->tx_skb[txq_pcpu->txq_get_index]; |
4408 | ||
4409 | mvpp2_txq_inc_get(txq_pcpu); | |
4410 | ||
71ce391d MW |
4411 | dma_unmap_single(port->dev->dev.parent, buf_phys_addr, |
4412 | skb_headlen(skb), DMA_TO_DEVICE); | |
e864b4c7 MW |
4413 | if (!skb) |
4414 | continue; | |
3f518509 MW |
4415 | dev_kfree_skb_any(skb); |
4416 | } | |
4417 | } | |
4418 | ||
4419 | static inline struct mvpp2_rx_queue *mvpp2_get_rx_queue(struct mvpp2_port *port, | |
4420 | u32 cause) | |
4421 | { | |
4422 | int queue = fls(cause) - 1; | |
4423 | ||
4424 | return port->rxqs[queue]; | |
4425 | } | |
4426 | ||
4427 | static inline struct mvpp2_tx_queue *mvpp2_get_tx_queue(struct mvpp2_port *port, | |
4428 | u32 cause) | |
4429 | { | |
edc660fa | 4430 | int queue = fls(cause) - 1; |
3f518509 MW |
4431 | |
4432 | return port->txqs[queue]; | |
4433 | } | |
4434 | ||
4435 | /* Handle end of transmission */ | |
4436 | static void mvpp2_txq_done(struct mvpp2_port *port, struct mvpp2_tx_queue *txq, | |
4437 | struct mvpp2_txq_pcpu *txq_pcpu) | |
4438 | { | |
4439 | struct netdev_queue *nq = netdev_get_tx_queue(port->dev, txq->log_id); | |
4440 | int tx_done; | |
4441 | ||
4442 | if (txq_pcpu->cpu != smp_processor_id()) | |
4443 | netdev_err(port->dev, "wrong cpu on the end of Tx processing\n"); | |
4444 | ||
4445 | tx_done = mvpp2_txq_sent_desc_proc(port, txq); | |
4446 | if (!tx_done) | |
4447 | return; | |
4448 | mvpp2_txq_bufs_free(port, txq, txq_pcpu, tx_done); | |
4449 | ||
4450 | txq_pcpu->count -= tx_done; | |
4451 | ||
4452 | if (netif_tx_queue_stopped(nq)) | |
4453 | if (txq_pcpu->size - txq_pcpu->count >= MAX_SKB_FRAGS + 1) | |
4454 | netif_tx_wake_queue(nq); | |
4455 | } | |
4456 | ||
edc660fa MW |
4457 | static unsigned int mvpp2_tx_done(struct mvpp2_port *port, u32 cause) |
4458 | { | |
4459 | struct mvpp2_tx_queue *txq; | |
4460 | struct mvpp2_txq_pcpu *txq_pcpu; | |
4461 | unsigned int tx_todo = 0; | |
4462 | ||
4463 | while (cause) { | |
4464 | txq = mvpp2_get_tx_queue(port, cause); | |
4465 | if (!txq) | |
4466 | break; | |
4467 | ||
4468 | txq_pcpu = this_cpu_ptr(txq->pcpu); | |
4469 | ||
4470 | if (txq_pcpu->count) { | |
4471 | mvpp2_txq_done(port, txq, txq_pcpu); | |
4472 | tx_todo += txq_pcpu->count; | |
4473 | } | |
4474 | ||
4475 | cause &= ~(1 << txq->log_id); | |
4476 | } | |
4477 | return tx_todo; | |
4478 | } | |
4479 | ||
3f518509 MW |
4480 | /* Rx/Tx queue initialization/cleanup methods */ |
4481 | ||
4482 | /* Allocate and initialize descriptors for aggr TXQ */ | |
4483 | static int mvpp2_aggr_txq_init(struct platform_device *pdev, | |
4484 | struct mvpp2_tx_queue *aggr_txq, | |
4485 | int desc_num, int cpu, | |
4486 | struct mvpp2 *priv) | |
4487 | { | |
4488 | /* Allocate memory for TX descriptors */ | |
4489 | aggr_txq->descs = dma_alloc_coherent(&pdev->dev, | |
4490 | desc_num * MVPP2_DESC_ALIGNED_SIZE, | |
4491 | &aggr_txq->descs_phys, GFP_KERNEL); | |
4492 | if (!aggr_txq->descs) | |
4493 | return -ENOMEM; | |
4494 | ||
3f518509 MW |
4495 | aggr_txq->last_desc = aggr_txq->size - 1; |
4496 | ||
4497 | /* Aggr TXQ no reset WA */ | |
4498 | aggr_txq->next_desc_to_proc = mvpp2_read(priv, | |
4499 | MVPP2_AGGR_TXQ_INDEX_REG(cpu)); | |
4500 | ||
4501 | /* Set Tx descriptors queue starting address */ | |
4502 | /* indirect access */ | |
4503 | mvpp2_write(priv, MVPP2_AGGR_TXQ_DESC_ADDR_REG(cpu), | |
4504 | aggr_txq->descs_phys); | |
4505 | mvpp2_write(priv, MVPP2_AGGR_TXQ_DESC_SIZE_REG(cpu), desc_num); | |
4506 | ||
4507 | return 0; | |
4508 | } | |
4509 | ||
4510 | /* Create a specified Rx queue */ | |
4511 | static int mvpp2_rxq_init(struct mvpp2_port *port, | |
4512 | struct mvpp2_rx_queue *rxq) | |
4513 | ||
4514 | { | |
4515 | rxq->size = port->rx_ring_size; | |
4516 | ||
4517 | /* Allocate memory for RX descriptors */ | |
4518 | rxq->descs = dma_alloc_coherent(port->dev->dev.parent, | |
4519 | rxq->size * MVPP2_DESC_ALIGNED_SIZE, | |
4520 | &rxq->descs_phys, GFP_KERNEL); | |
4521 | if (!rxq->descs) | |
4522 | return -ENOMEM; | |
4523 | ||
3f518509 MW |
4524 | rxq->last_desc = rxq->size - 1; |
4525 | ||
4526 | /* Zero occupied and non-occupied counters - direct access */ | |
4527 | mvpp2_write(port->priv, MVPP2_RXQ_STATUS_REG(rxq->id), 0); | |
4528 | ||
4529 | /* Set Rx descriptors queue starting address - indirect access */ | |
4530 | mvpp2_write(port->priv, MVPP2_RXQ_NUM_REG, rxq->id); | |
4531 | mvpp2_write(port->priv, MVPP2_RXQ_DESC_ADDR_REG, rxq->descs_phys); | |
4532 | mvpp2_write(port->priv, MVPP2_RXQ_DESC_SIZE_REG, rxq->size); | |
4533 | mvpp2_write(port->priv, MVPP2_RXQ_INDEX_REG, 0); | |
4534 | ||
4535 | /* Set Offset */ | |
4536 | mvpp2_rxq_offset_set(port, rxq->id, NET_SKB_PAD); | |
4537 | ||
4538 | /* Set coalescing pkts and time */ | |
4539 | mvpp2_rx_pkts_coal_set(port, rxq, rxq->pkts_coal); | |
4540 | mvpp2_rx_time_coal_set(port, rxq, rxq->time_coal); | |
4541 | ||
4542 | /* Add number of descriptors ready for receiving packets */ | |
4543 | mvpp2_rxq_status_update(port, rxq->id, 0, rxq->size); | |
4544 | ||
4545 | return 0; | |
4546 | } | |
4547 | ||
4548 | /* Push packets received by the RXQ to BM pool */ | |
4549 | static void mvpp2_rxq_drop_pkts(struct mvpp2_port *port, | |
4550 | struct mvpp2_rx_queue *rxq) | |
4551 | { | |
4552 | int rx_received, i; | |
4553 | ||
4554 | rx_received = mvpp2_rxq_received(port, rxq->id); | |
4555 | if (!rx_received) | |
4556 | return; | |
4557 | ||
4558 | for (i = 0; i < rx_received; i++) { | |
4559 | struct mvpp2_rx_desc *rx_desc = mvpp2_rxq_next_desc_get(rxq); | |
4560 | u32 bm = mvpp2_bm_cookie_build(rx_desc); | |
4561 | ||
4562 | mvpp2_pool_refill(port, bm, rx_desc->buf_phys_addr, | |
4563 | rx_desc->buf_cookie); | |
4564 | } | |
4565 | mvpp2_rxq_status_update(port, rxq->id, rx_received, rx_received); | |
4566 | } | |
4567 | ||
4568 | /* Cleanup Rx queue */ | |
4569 | static void mvpp2_rxq_deinit(struct mvpp2_port *port, | |
4570 | struct mvpp2_rx_queue *rxq) | |
4571 | { | |
4572 | mvpp2_rxq_drop_pkts(port, rxq); | |
4573 | ||
4574 | if (rxq->descs) | |
4575 | dma_free_coherent(port->dev->dev.parent, | |
4576 | rxq->size * MVPP2_DESC_ALIGNED_SIZE, | |
4577 | rxq->descs, | |
4578 | rxq->descs_phys); | |
4579 | ||
4580 | rxq->descs = NULL; | |
4581 | rxq->last_desc = 0; | |
4582 | rxq->next_desc_to_proc = 0; | |
4583 | rxq->descs_phys = 0; | |
4584 | ||
4585 | /* Clear Rx descriptors queue starting address and size; | |
4586 | * free descriptor number | |
4587 | */ | |
4588 | mvpp2_write(port->priv, MVPP2_RXQ_STATUS_REG(rxq->id), 0); | |
4589 | mvpp2_write(port->priv, MVPP2_RXQ_NUM_REG, rxq->id); | |
4590 | mvpp2_write(port->priv, MVPP2_RXQ_DESC_ADDR_REG, 0); | |
4591 | mvpp2_write(port->priv, MVPP2_RXQ_DESC_SIZE_REG, 0); | |
4592 | } | |
4593 | ||
4594 | /* Create and initialize a Tx queue */ | |
4595 | static int mvpp2_txq_init(struct mvpp2_port *port, | |
4596 | struct mvpp2_tx_queue *txq) | |
4597 | { | |
4598 | u32 val; | |
4599 | int cpu, desc, desc_per_txq, tx_port_num; | |
4600 | struct mvpp2_txq_pcpu *txq_pcpu; | |
4601 | ||
4602 | txq->size = port->tx_ring_size; | |
4603 | ||
4604 | /* Allocate memory for Tx descriptors */ | |
4605 | txq->descs = dma_alloc_coherent(port->dev->dev.parent, | |
4606 | txq->size * MVPP2_DESC_ALIGNED_SIZE, | |
4607 | &txq->descs_phys, GFP_KERNEL); | |
4608 | if (!txq->descs) | |
4609 | return -ENOMEM; | |
4610 | ||
3f518509 MW |
4611 | txq->last_desc = txq->size - 1; |
4612 | ||
4613 | /* Set Tx descriptors queue starting address - indirect access */ | |
4614 | mvpp2_write(port->priv, MVPP2_TXQ_NUM_REG, txq->id); | |
4615 | mvpp2_write(port->priv, MVPP2_TXQ_DESC_ADDR_REG, txq->descs_phys); | |
4616 | mvpp2_write(port->priv, MVPP2_TXQ_DESC_SIZE_REG, txq->size & | |
4617 | MVPP2_TXQ_DESC_SIZE_MASK); | |
4618 | mvpp2_write(port->priv, MVPP2_TXQ_INDEX_REG, 0); | |
4619 | mvpp2_write(port->priv, MVPP2_TXQ_RSVD_CLR_REG, | |
4620 | txq->id << MVPP2_TXQ_RSVD_CLR_OFFSET); | |
4621 | val = mvpp2_read(port->priv, MVPP2_TXQ_PENDING_REG); | |
4622 | val &= ~MVPP2_TXQ_PENDING_MASK; | |
4623 | mvpp2_write(port->priv, MVPP2_TXQ_PENDING_REG, val); | |
4624 | ||
4625 | /* Calculate base address in prefetch buffer. We reserve 16 descriptors | |
4626 | * for each existing TXQ. | |
4627 | * TCONTS for PON port must be continuous from 0 to MVPP2_MAX_TCONT | |
4628 | * GBE ports assumed to be continious from 0 to MVPP2_MAX_PORTS | |
4629 | */ | |
4630 | desc_per_txq = 16; | |
4631 | desc = (port->id * MVPP2_MAX_TXQ * desc_per_txq) + | |
4632 | (txq->log_id * desc_per_txq); | |
4633 | ||
4634 | mvpp2_write(port->priv, MVPP2_TXQ_PREF_BUF_REG, | |
4635 | MVPP2_PREF_BUF_PTR(desc) | MVPP2_PREF_BUF_SIZE_16 | | |
4636 | MVPP2_PREF_BUF_THRESH(desc_per_txq/2)); | |
4637 | ||
4638 | /* WRR / EJP configuration - indirect access */ | |
4639 | tx_port_num = mvpp2_egress_port(port); | |
4640 | mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num); | |
4641 | ||
4642 | val = mvpp2_read(port->priv, MVPP2_TXQ_SCHED_REFILL_REG(txq->log_id)); | |
4643 | val &= ~MVPP2_TXQ_REFILL_PERIOD_ALL_MASK; | |
4644 | val |= MVPP2_TXQ_REFILL_PERIOD_MASK(1); | |
4645 | val |= MVPP2_TXQ_REFILL_TOKENS_ALL_MASK; | |
4646 | mvpp2_write(port->priv, MVPP2_TXQ_SCHED_REFILL_REG(txq->log_id), val); | |
4647 | ||
4648 | val = MVPP2_TXQ_TOKEN_SIZE_MAX; | |
4649 | mvpp2_write(port->priv, MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(txq->log_id), | |
4650 | val); | |
4651 | ||
4652 | for_each_present_cpu(cpu) { | |
4653 | txq_pcpu = per_cpu_ptr(txq->pcpu, cpu); | |
4654 | txq_pcpu->size = txq->size; | |
4655 | txq_pcpu->tx_skb = kmalloc(txq_pcpu->size * | |
4656 | sizeof(*txq_pcpu->tx_skb), | |
4657 | GFP_KERNEL); | |
71ce391d MW |
4658 | if (!txq_pcpu->tx_skb) |
4659 | goto error; | |
4660 | ||
4661 | txq_pcpu->tx_buffs = kmalloc(txq_pcpu->size * | |
4662 | sizeof(dma_addr_t), GFP_KERNEL); | |
4663 | if (!txq_pcpu->tx_buffs) | |
4664 | goto error; | |
3f518509 MW |
4665 | |
4666 | txq_pcpu->count = 0; | |
4667 | txq_pcpu->reserved_num = 0; | |
4668 | txq_pcpu->txq_put_index = 0; | |
4669 | txq_pcpu->txq_get_index = 0; | |
4670 | } | |
4671 | ||
4672 | return 0; | |
71ce391d MW |
4673 | |
4674 | error: | |
4675 | for_each_present_cpu(cpu) { | |
4676 | txq_pcpu = per_cpu_ptr(txq->pcpu, cpu); | |
4677 | kfree(txq_pcpu->tx_skb); | |
4678 | kfree(txq_pcpu->tx_buffs); | |
4679 | } | |
4680 | ||
4681 | dma_free_coherent(port->dev->dev.parent, | |
4682 | txq->size * MVPP2_DESC_ALIGNED_SIZE, | |
4683 | txq->descs, txq->descs_phys); | |
4684 | ||
4685 | return -ENOMEM; | |
3f518509 MW |
4686 | } |
4687 | ||
4688 | /* Free allocated TXQ resources */ | |
4689 | static void mvpp2_txq_deinit(struct mvpp2_port *port, | |
4690 | struct mvpp2_tx_queue *txq) | |
4691 | { | |
4692 | struct mvpp2_txq_pcpu *txq_pcpu; | |
4693 | int cpu; | |
4694 | ||
4695 | for_each_present_cpu(cpu) { | |
4696 | txq_pcpu = per_cpu_ptr(txq->pcpu, cpu); | |
4697 | kfree(txq_pcpu->tx_skb); | |
71ce391d | 4698 | kfree(txq_pcpu->tx_buffs); |
3f518509 MW |
4699 | } |
4700 | ||
4701 | if (txq->descs) | |
4702 | dma_free_coherent(port->dev->dev.parent, | |
4703 | txq->size * MVPP2_DESC_ALIGNED_SIZE, | |
4704 | txq->descs, txq->descs_phys); | |
4705 | ||
4706 | txq->descs = NULL; | |
4707 | txq->last_desc = 0; | |
4708 | txq->next_desc_to_proc = 0; | |
4709 | txq->descs_phys = 0; | |
4710 | ||
4711 | /* Set minimum bandwidth for disabled TXQs */ | |
4712 | mvpp2_write(port->priv, MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(txq->id), 0); | |
4713 | ||
4714 | /* Set Tx descriptors queue starting address and size */ | |
4715 | mvpp2_write(port->priv, MVPP2_TXQ_NUM_REG, txq->id); | |
4716 | mvpp2_write(port->priv, MVPP2_TXQ_DESC_ADDR_REG, 0); | |
4717 | mvpp2_write(port->priv, MVPP2_TXQ_DESC_SIZE_REG, 0); | |
4718 | } | |
4719 | ||
4720 | /* Cleanup Tx ports */ | |
4721 | static void mvpp2_txq_clean(struct mvpp2_port *port, struct mvpp2_tx_queue *txq) | |
4722 | { | |
4723 | struct mvpp2_txq_pcpu *txq_pcpu; | |
4724 | int delay, pending, cpu; | |
4725 | u32 val; | |
4726 | ||
4727 | mvpp2_write(port->priv, MVPP2_TXQ_NUM_REG, txq->id); | |
4728 | val = mvpp2_read(port->priv, MVPP2_TXQ_PREF_BUF_REG); | |
4729 | val |= MVPP2_TXQ_DRAIN_EN_MASK; | |
4730 | mvpp2_write(port->priv, MVPP2_TXQ_PREF_BUF_REG, val); | |
4731 | ||
4732 | /* The napi queue has been stopped so wait for all packets | |
4733 | * to be transmitted. | |
4734 | */ | |
4735 | delay = 0; | |
4736 | do { | |
4737 | if (delay >= MVPP2_TX_PENDING_TIMEOUT_MSEC) { | |
4738 | netdev_warn(port->dev, | |
4739 | "port %d: cleaning queue %d timed out\n", | |
4740 | port->id, txq->log_id); | |
4741 | break; | |
4742 | } | |
4743 | mdelay(1); | |
4744 | delay++; | |
4745 | ||
4746 | pending = mvpp2_txq_pend_desc_num_get(port, txq); | |
4747 | } while (pending); | |
4748 | ||
4749 | val &= ~MVPP2_TXQ_DRAIN_EN_MASK; | |
4750 | mvpp2_write(port->priv, MVPP2_TXQ_PREF_BUF_REG, val); | |
4751 | ||
4752 | for_each_present_cpu(cpu) { | |
4753 | txq_pcpu = per_cpu_ptr(txq->pcpu, cpu); | |
4754 | ||
4755 | /* Release all packets */ | |
4756 | mvpp2_txq_bufs_free(port, txq, txq_pcpu, txq_pcpu->count); | |
4757 | ||
4758 | /* Reset queue */ | |
4759 | txq_pcpu->count = 0; | |
4760 | txq_pcpu->txq_put_index = 0; | |
4761 | txq_pcpu->txq_get_index = 0; | |
4762 | } | |
4763 | } | |
4764 | ||
4765 | /* Cleanup all Tx queues */ | |
4766 | static void mvpp2_cleanup_txqs(struct mvpp2_port *port) | |
4767 | { | |
4768 | struct mvpp2_tx_queue *txq; | |
4769 | int queue; | |
4770 | u32 val; | |
4771 | ||
4772 | val = mvpp2_read(port->priv, MVPP2_TX_PORT_FLUSH_REG); | |
4773 | ||
4774 | /* Reset Tx ports and delete Tx queues */ | |
4775 | val |= MVPP2_TX_PORT_FLUSH_MASK(port->id); | |
4776 | mvpp2_write(port->priv, MVPP2_TX_PORT_FLUSH_REG, val); | |
4777 | ||
4778 | for (queue = 0; queue < txq_number; queue++) { | |
4779 | txq = port->txqs[queue]; | |
4780 | mvpp2_txq_clean(port, txq); | |
4781 | mvpp2_txq_deinit(port, txq); | |
4782 | } | |
4783 | ||
4784 | on_each_cpu(mvpp2_txq_sent_counter_clear, port, 1); | |
4785 | ||
4786 | val &= ~MVPP2_TX_PORT_FLUSH_MASK(port->id); | |
4787 | mvpp2_write(port->priv, MVPP2_TX_PORT_FLUSH_REG, val); | |
4788 | } | |
4789 | ||
4790 | /* Cleanup all Rx queues */ | |
4791 | static void mvpp2_cleanup_rxqs(struct mvpp2_port *port) | |
4792 | { | |
4793 | int queue; | |
4794 | ||
4795 | for (queue = 0; queue < rxq_number; queue++) | |
4796 | mvpp2_rxq_deinit(port, port->rxqs[queue]); | |
4797 | } | |
4798 | ||
4799 | /* Init all Rx queues for port */ | |
4800 | static int mvpp2_setup_rxqs(struct mvpp2_port *port) | |
4801 | { | |
4802 | int queue, err; | |
4803 | ||
4804 | for (queue = 0; queue < rxq_number; queue++) { | |
4805 | err = mvpp2_rxq_init(port, port->rxqs[queue]); | |
4806 | if (err) | |
4807 | goto err_cleanup; | |
4808 | } | |
4809 | return 0; | |
4810 | ||
4811 | err_cleanup: | |
4812 | mvpp2_cleanup_rxqs(port); | |
4813 | return err; | |
4814 | } | |
4815 | ||
4816 | /* Init all tx queues for port */ | |
4817 | static int mvpp2_setup_txqs(struct mvpp2_port *port) | |
4818 | { | |
4819 | struct mvpp2_tx_queue *txq; | |
4820 | int queue, err; | |
4821 | ||
4822 | for (queue = 0; queue < txq_number; queue++) { | |
4823 | txq = port->txqs[queue]; | |
4824 | err = mvpp2_txq_init(port, txq); | |
4825 | if (err) | |
4826 | goto err_cleanup; | |
4827 | } | |
4828 | ||
3f518509 MW |
4829 | on_each_cpu(mvpp2_txq_sent_counter_clear, port, 1); |
4830 | return 0; | |
4831 | ||
4832 | err_cleanup: | |
4833 | mvpp2_cleanup_txqs(port); | |
4834 | return err; | |
4835 | } | |
4836 | ||
4837 | /* The callback for per-port interrupt */ | |
4838 | static irqreturn_t mvpp2_isr(int irq, void *dev_id) | |
4839 | { | |
4840 | struct mvpp2_port *port = (struct mvpp2_port *)dev_id; | |
4841 | ||
4842 | mvpp2_interrupts_disable(port); | |
4843 | ||
4844 | napi_schedule(&port->napi); | |
4845 | ||
4846 | return IRQ_HANDLED; | |
4847 | } | |
4848 | ||
4849 | /* Adjust link */ | |
4850 | static void mvpp2_link_event(struct net_device *dev) | |
4851 | { | |
4852 | struct mvpp2_port *port = netdev_priv(dev); | |
4853 | struct phy_device *phydev = port->phy_dev; | |
4854 | int status_change = 0; | |
4855 | u32 val; | |
4856 | ||
4857 | if (phydev->link) { | |
4858 | if ((port->speed != phydev->speed) || | |
4859 | (port->duplex != phydev->duplex)) { | |
4860 | u32 val; | |
4861 | ||
4862 | val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG); | |
4863 | val &= ~(MVPP2_GMAC_CONFIG_MII_SPEED | | |
4864 | MVPP2_GMAC_CONFIG_GMII_SPEED | | |
4865 | MVPP2_GMAC_CONFIG_FULL_DUPLEX | | |
4866 | MVPP2_GMAC_AN_SPEED_EN | | |
4867 | MVPP2_GMAC_AN_DUPLEX_EN); | |
4868 | ||
4869 | if (phydev->duplex) | |
4870 | val |= MVPP2_GMAC_CONFIG_FULL_DUPLEX; | |
4871 | ||
4872 | if (phydev->speed == SPEED_1000) | |
4873 | val |= MVPP2_GMAC_CONFIG_GMII_SPEED; | |
2add511e | 4874 | else if (phydev->speed == SPEED_100) |
3f518509 MW |
4875 | val |= MVPP2_GMAC_CONFIG_MII_SPEED; |
4876 | ||
4877 | writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG); | |
4878 | ||
4879 | port->duplex = phydev->duplex; | |
4880 | port->speed = phydev->speed; | |
4881 | } | |
4882 | } | |
4883 | ||
4884 | if (phydev->link != port->link) { | |
4885 | if (!phydev->link) { | |
4886 | port->duplex = -1; | |
4887 | port->speed = 0; | |
4888 | } | |
4889 | ||
4890 | port->link = phydev->link; | |
4891 | status_change = 1; | |
4892 | } | |
4893 | ||
4894 | if (status_change) { | |
4895 | if (phydev->link) { | |
4896 | val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG); | |
4897 | val |= (MVPP2_GMAC_FORCE_LINK_PASS | | |
4898 | MVPP2_GMAC_FORCE_LINK_DOWN); | |
4899 | writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG); | |
4900 | mvpp2_egress_enable(port); | |
4901 | mvpp2_ingress_enable(port); | |
4902 | } else { | |
4903 | mvpp2_ingress_disable(port); | |
4904 | mvpp2_egress_disable(port); | |
4905 | } | |
4906 | phy_print_status(phydev); | |
4907 | } | |
4908 | } | |
4909 | ||
edc660fa MW |
4910 | static void mvpp2_timer_set(struct mvpp2_port_pcpu *port_pcpu) |
4911 | { | |
4912 | ktime_t interval; | |
4913 | ||
4914 | if (!port_pcpu->timer_scheduled) { | |
4915 | port_pcpu->timer_scheduled = true; | |
4916 | interval = ktime_set(0, MVPP2_TXDONE_HRTIMER_PERIOD_NS); | |
4917 | hrtimer_start(&port_pcpu->tx_done_timer, interval, | |
4918 | HRTIMER_MODE_REL_PINNED); | |
4919 | } | |
4920 | } | |
4921 | ||
4922 | static void mvpp2_tx_proc_cb(unsigned long data) | |
4923 | { | |
4924 | struct net_device *dev = (struct net_device *)data; | |
4925 | struct mvpp2_port *port = netdev_priv(dev); | |
4926 | struct mvpp2_port_pcpu *port_pcpu = this_cpu_ptr(port->pcpu); | |
4927 | unsigned int tx_todo, cause; | |
4928 | ||
4929 | if (!netif_running(dev)) | |
4930 | return; | |
4931 | port_pcpu->timer_scheduled = false; | |
4932 | ||
4933 | /* Process all the Tx queues */ | |
4934 | cause = (1 << txq_number) - 1; | |
4935 | tx_todo = mvpp2_tx_done(port, cause); | |
4936 | ||
4937 | /* Set the timer in case not all the packets were processed */ | |
4938 | if (tx_todo) | |
4939 | mvpp2_timer_set(port_pcpu); | |
4940 | } | |
4941 | ||
4942 | static enum hrtimer_restart mvpp2_hr_timer_cb(struct hrtimer *timer) | |
4943 | { | |
4944 | struct mvpp2_port_pcpu *port_pcpu = container_of(timer, | |
4945 | struct mvpp2_port_pcpu, | |
4946 | tx_done_timer); | |
4947 | ||
4948 | tasklet_schedule(&port_pcpu->tx_done_tasklet); | |
4949 | ||
4950 | return HRTIMER_NORESTART; | |
4951 | } | |
4952 | ||
3f518509 MW |
4953 | /* Main RX/TX processing routines */ |
4954 | ||
4955 | /* Display more error info */ | |
4956 | static void mvpp2_rx_error(struct mvpp2_port *port, | |
4957 | struct mvpp2_rx_desc *rx_desc) | |
4958 | { | |
4959 | u32 status = rx_desc->status; | |
4960 | ||
4961 | switch (status & MVPP2_RXD_ERR_CODE_MASK) { | |
4962 | case MVPP2_RXD_ERR_CRC: | |
4963 | netdev_err(port->dev, "bad rx status %08x (crc error), size=%d\n", | |
4964 | status, rx_desc->data_size); | |
4965 | break; | |
4966 | case MVPP2_RXD_ERR_OVERRUN: | |
4967 | netdev_err(port->dev, "bad rx status %08x (overrun error), size=%d\n", | |
4968 | status, rx_desc->data_size); | |
4969 | break; | |
4970 | case MVPP2_RXD_ERR_RESOURCE: | |
4971 | netdev_err(port->dev, "bad rx status %08x (resource error), size=%d\n", | |
4972 | status, rx_desc->data_size); | |
4973 | break; | |
4974 | } | |
4975 | } | |
4976 | ||
4977 | /* Handle RX checksum offload */ | |
4978 | static void mvpp2_rx_csum(struct mvpp2_port *port, u32 status, | |
4979 | struct sk_buff *skb) | |
4980 | { | |
4981 | if (((status & MVPP2_RXD_L3_IP4) && | |
4982 | !(status & MVPP2_RXD_IP4_HEADER_ERR)) || | |
4983 | (status & MVPP2_RXD_L3_IP6)) | |
4984 | if (((status & MVPP2_RXD_L4_UDP) || | |
4985 | (status & MVPP2_RXD_L4_TCP)) && | |
4986 | (status & MVPP2_RXD_L4_CSUM_OK)) { | |
4987 | skb->csum = 0; | |
4988 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
4989 | return; | |
4990 | } | |
4991 | ||
4992 | skb->ip_summed = CHECKSUM_NONE; | |
4993 | } | |
4994 | ||
4995 | /* Reuse skb if possible, or allocate a new skb and add it to BM pool */ | |
4996 | static int mvpp2_rx_refill(struct mvpp2_port *port, | |
4997 | struct mvpp2_bm_pool *bm_pool, | |
4998 | u32 bm, int is_recycle) | |
4999 | { | |
5000 | struct sk_buff *skb; | |
5001 | dma_addr_t phys_addr; | |
5002 | ||
5003 | if (is_recycle && | |
5004 | (atomic_read(&bm_pool->in_use) < bm_pool->in_use_thresh)) | |
5005 | return 0; | |
5006 | ||
5007 | /* No recycle or too many buffers are in use, so allocate a new skb */ | |
5008 | skb = mvpp2_skb_alloc(port, bm_pool, &phys_addr, GFP_ATOMIC); | |
5009 | if (!skb) | |
5010 | return -ENOMEM; | |
5011 | ||
5012 | mvpp2_pool_refill(port, bm, (u32)phys_addr, (u32)skb); | |
5013 | atomic_dec(&bm_pool->in_use); | |
5014 | return 0; | |
5015 | } | |
5016 | ||
5017 | /* Handle tx checksum */ | |
5018 | static u32 mvpp2_skb_tx_csum(struct mvpp2_port *port, struct sk_buff *skb) | |
5019 | { | |
5020 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
5021 | int ip_hdr_len = 0; | |
5022 | u8 l4_proto; | |
5023 | ||
5024 | if (skb->protocol == htons(ETH_P_IP)) { | |
5025 | struct iphdr *ip4h = ip_hdr(skb); | |
5026 | ||
5027 | /* Calculate IPv4 checksum and L4 checksum */ | |
5028 | ip_hdr_len = ip4h->ihl; | |
5029 | l4_proto = ip4h->protocol; | |
5030 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
5031 | struct ipv6hdr *ip6h = ipv6_hdr(skb); | |
5032 | ||
5033 | /* Read l4_protocol from one of IPv6 extra headers */ | |
5034 | if (skb_network_header_len(skb) > 0) | |
5035 | ip_hdr_len = (skb_network_header_len(skb) >> 2); | |
5036 | l4_proto = ip6h->nexthdr; | |
5037 | } else { | |
5038 | return MVPP2_TXD_L4_CSUM_NOT; | |
5039 | } | |
5040 | ||
5041 | return mvpp2_txq_desc_csum(skb_network_offset(skb), | |
5042 | skb->protocol, ip_hdr_len, l4_proto); | |
5043 | } | |
5044 | ||
5045 | return MVPP2_TXD_L4_CSUM_NOT | MVPP2_TXD_IP_CSUM_DISABLE; | |
5046 | } | |
5047 | ||
5048 | static void mvpp2_buff_hdr_rx(struct mvpp2_port *port, | |
5049 | struct mvpp2_rx_desc *rx_desc) | |
5050 | { | |
5051 | struct mvpp2_buff_hdr *buff_hdr; | |
5052 | struct sk_buff *skb; | |
5053 | u32 rx_status = rx_desc->status; | |
5054 | u32 buff_phys_addr; | |
5055 | u32 buff_virt_addr; | |
5056 | u32 buff_phys_addr_next; | |
5057 | u32 buff_virt_addr_next; | |
5058 | int mc_id; | |
5059 | int pool_id; | |
5060 | ||
5061 | pool_id = (rx_status & MVPP2_RXD_BM_POOL_ID_MASK) >> | |
5062 | MVPP2_RXD_BM_POOL_ID_OFFS; | |
5063 | buff_phys_addr = rx_desc->buf_phys_addr; | |
5064 | buff_virt_addr = rx_desc->buf_cookie; | |
5065 | ||
5066 | do { | |
5067 | skb = (struct sk_buff *)buff_virt_addr; | |
5068 | buff_hdr = (struct mvpp2_buff_hdr *)skb->head; | |
5069 | ||
5070 | mc_id = MVPP2_B_HDR_INFO_MC_ID(buff_hdr->info); | |
5071 | ||
5072 | buff_phys_addr_next = buff_hdr->next_buff_phys_addr; | |
5073 | buff_virt_addr_next = buff_hdr->next_buff_virt_addr; | |
5074 | ||
5075 | /* Release buffer */ | |
5076 | mvpp2_bm_pool_mc_put(port, pool_id, buff_phys_addr, | |
5077 | buff_virt_addr, mc_id); | |
5078 | ||
5079 | buff_phys_addr = buff_phys_addr_next; | |
5080 | buff_virt_addr = buff_virt_addr_next; | |
5081 | ||
5082 | } while (!MVPP2_B_HDR_INFO_IS_LAST(buff_hdr->info)); | |
5083 | } | |
5084 | ||
5085 | /* Main rx processing */ | |
5086 | static int mvpp2_rx(struct mvpp2_port *port, int rx_todo, | |
5087 | struct mvpp2_rx_queue *rxq) | |
5088 | { | |
5089 | struct net_device *dev = port->dev; | |
b5015854 MW |
5090 | int rx_received; |
5091 | int rx_done = 0; | |
3f518509 MW |
5092 | u32 rcvd_pkts = 0; |
5093 | u32 rcvd_bytes = 0; | |
5094 | ||
5095 | /* Get number of received packets and clamp the to-do */ | |
5096 | rx_received = mvpp2_rxq_received(port, rxq->id); | |
5097 | if (rx_todo > rx_received) | |
5098 | rx_todo = rx_received; | |
5099 | ||
b5015854 | 5100 | while (rx_done < rx_todo) { |
3f518509 MW |
5101 | struct mvpp2_rx_desc *rx_desc = mvpp2_rxq_next_desc_get(rxq); |
5102 | struct mvpp2_bm_pool *bm_pool; | |
5103 | struct sk_buff *skb; | |
b5015854 | 5104 | dma_addr_t phys_addr; |
3f518509 MW |
5105 | u32 bm, rx_status; |
5106 | int pool, rx_bytes, err; | |
5107 | ||
b5015854 | 5108 | rx_done++; |
3f518509 MW |
5109 | rx_status = rx_desc->status; |
5110 | rx_bytes = rx_desc->data_size - MVPP2_MH_SIZE; | |
b5015854 | 5111 | phys_addr = rx_desc->buf_phys_addr; |
3f518509 MW |
5112 | |
5113 | bm = mvpp2_bm_cookie_build(rx_desc); | |
5114 | pool = mvpp2_bm_cookie_pool_get(bm); | |
5115 | bm_pool = &port->priv->bm_pools[pool]; | |
5116 | /* Check if buffer header is used */ | |
5117 | if (rx_status & MVPP2_RXD_BUF_HDR) { | |
5118 | mvpp2_buff_hdr_rx(port, rx_desc); | |
5119 | continue; | |
5120 | } | |
5121 | ||
5122 | /* In case of an error, release the requested buffer pointer | |
5123 | * to the Buffer Manager. This request process is controlled | |
5124 | * by the hardware, and the information about the buffer is | |
5125 | * comprised by the RX descriptor. | |
5126 | */ | |
5127 | if (rx_status & MVPP2_RXD_ERR_SUMMARY) { | |
b5015854 | 5128 | err_drop_frame: |
3f518509 MW |
5129 | dev->stats.rx_errors++; |
5130 | mvpp2_rx_error(port, rx_desc); | |
b5015854 | 5131 | /* Return the buffer to the pool */ |
3f518509 MW |
5132 | mvpp2_pool_refill(port, bm, rx_desc->buf_phys_addr, |
5133 | rx_desc->buf_cookie); | |
5134 | continue; | |
5135 | } | |
5136 | ||
5137 | skb = (struct sk_buff *)rx_desc->buf_cookie; | |
5138 | ||
b5015854 MW |
5139 | err = mvpp2_rx_refill(port, bm_pool, bm, 0); |
5140 | if (err) { | |
5141 | netdev_err(port->dev, "failed to refill BM pools\n"); | |
5142 | goto err_drop_frame; | |
5143 | } | |
5144 | ||
5145 | dma_unmap_single(dev->dev.parent, phys_addr, | |
4229d502 MW |
5146 | bm_pool->buf_size, DMA_FROM_DEVICE); |
5147 | ||
3f518509 MW |
5148 | rcvd_pkts++; |
5149 | rcvd_bytes += rx_bytes; | |
5150 | atomic_inc(&bm_pool->in_use); | |
5151 | ||
5152 | skb_reserve(skb, MVPP2_MH_SIZE); | |
5153 | skb_put(skb, rx_bytes); | |
5154 | skb->protocol = eth_type_trans(skb, dev); | |
5155 | mvpp2_rx_csum(port, rx_status, skb); | |
5156 | ||
5157 | napi_gro_receive(&port->napi, skb); | |
3f518509 MW |
5158 | } |
5159 | ||
5160 | if (rcvd_pkts) { | |
5161 | struct mvpp2_pcpu_stats *stats = this_cpu_ptr(port->stats); | |
5162 | ||
5163 | u64_stats_update_begin(&stats->syncp); | |
5164 | stats->rx_packets += rcvd_pkts; | |
5165 | stats->rx_bytes += rcvd_bytes; | |
5166 | u64_stats_update_end(&stats->syncp); | |
5167 | } | |
5168 | ||
5169 | /* Update Rx queue management counters */ | |
5170 | wmb(); | |
b5015854 | 5171 | mvpp2_rxq_status_update(port, rxq->id, rx_done, rx_done); |
3f518509 MW |
5172 | |
5173 | return rx_todo; | |
5174 | } | |
5175 | ||
5176 | static inline void | |
5177 | tx_desc_unmap_put(struct device *dev, struct mvpp2_tx_queue *txq, | |
5178 | struct mvpp2_tx_desc *desc) | |
5179 | { | |
5180 | dma_unmap_single(dev, desc->buf_phys_addr, | |
5181 | desc->data_size, DMA_TO_DEVICE); | |
5182 | mvpp2_txq_desc_put(txq); | |
5183 | } | |
5184 | ||
5185 | /* Handle tx fragmentation processing */ | |
5186 | static int mvpp2_tx_frag_process(struct mvpp2_port *port, struct sk_buff *skb, | |
5187 | struct mvpp2_tx_queue *aggr_txq, | |
5188 | struct mvpp2_tx_queue *txq) | |
5189 | { | |
5190 | struct mvpp2_txq_pcpu *txq_pcpu = this_cpu_ptr(txq->pcpu); | |
5191 | struct mvpp2_tx_desc *tx_desc; | |
5192 | int i; | |
5193 | dma_addr_t buf_phys_addr; | |
5194 | ||
5195 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
5196 | skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; | |
5197 | void *addr = page_address(frag->page.p) + frag->page_offset; | |
5198 | ||
5199 | tx_desc = mvpp2_txq_next_desc_get(aggr_txq); | |
5200 | tx_desc->phys_txq = txq->id; | |
5201 | tx_desc->data_size = frag->size; | |
5202 | ||
5203 | buf_phys_addr = dma_map_single(port->dev->dev.parent, addr, | |
5204 | tx_desc->data_size, | |
5205 | DMA_TO_DEVICE); | |
5206 | if (dma_mapping_error(port->dev->dev.parent, buf_phys_addr)) { | |
5207 | mvpp2_txq_desc_put(txq); | |
5208 | goto error; | |
5209 | } | |
5210 | ||
5211 | tx_desc->packet_offset = buf_phys_addr & MVPP2_TX_DESC_ALIGN; | |
5212 | tx_desc->buf_phys_addr = buf_phys_addr & (~MVPP2_TX_DESC_ALIGN); | |
5213 | ||
5214 | if (i == (skb_shinfo(skb)->nr_frags - 1)) { | |
5215 | /* Last descriptor */ | |
5216 | tx_desc->command = MVPP2_TXD_L_DESC; | |
71ce391d | 5217 | mvpp2_txq_inc_put(txq_pcpu, skb, tx_desc); |
3f518509 MW |
5218 | } else { |
5219 | /* Descriptor in the middle: Not First, Not Last */ | |
5220 | tx_desc->command = 0; | |
71ce391d | 5221 | mvpp2_txq_inc_put(txq_pcpu, NULL, tx_desc); |
3f518509 MW |
5222 | } |
5223 | } | |
5224 | ||
5225 | return 0; | |
5226 | ||
5227 | error: | |
5228 | /* Release all descriptors that were used to map fragments of | |
5229 | * this packet, as well as the corresponding DMA mappings | |
5230 | */ | |
5231 | for (i = i - 1; i >= 0; i--) { | |
5232 | tx_desc = txq->descs + i; | |
5233 | tx_desc_unmap_put(port->dev->dev.parent, txq, tx_desc); | |
5234 | } | |
5235 | ||
5236 | return -ENOMEM; | |
5237 | } | |
5238 | ||
5239 | /* Main tx processing */ | |
5240 | static int mvpp2_tx(struct sk_buff *skb, struct net_device *dev) | |
5241 | { | |
5242 | struct mvpp2_port *port = netdev_priv(dev); | |
5243 | struct mvpp2_tx_queue *txq, *aggr_txq; | |
5244 | struct mvpp2_txq_pcpu *txq_pcpu; | |
5245 | struct mvpp2_tx_desc *tx_desc; | |
5246 | dma_addr_t buf_phys_addr; | |
5247 | int frags = 0; | |
5248 | u16 txq_id; | |
5249 | u32 tx_cmd; | |
5250 | ||
5251 | txq_id = skb_get_queue_mapping(skb); | |
5252 | txq = port->txqs[txq_id]; | |
5253 | txq_pcpu = this_cpu_ptr(txq->pcpu); | |
5254 | aggr_txq = &port->priv->aggr_txqs[smp_processor_id()]; | |
5255 | ||
5256 | frags = skb_shinfo(skb)->nr_frags + 1; | |
5257 | ||
5258 | /* Check number of available descriptors */ | |
5259 | if (mvpp2_aggr_desc_num_check(port->priv, aggr_txq, frags) || | |
5260 | mvpp2_txq_reserved_desc_num_proc(port->priv, txq, | |
5261 | txq_pcpu, frags)) { | |
5262 | frags = 0; | |
5263 | goto out; | |
5264 | } | |
5265 | ||
5266 | /* Get a descriptor for the first part of the packet */ | |
5267 | tx_desc = mvpp2_txq_next_desc_get(aggr_txq); | |
5268 | tx_desc->phys_txq = txq->id; | |
5269 | tx_desc->data_size = skb_headlen(skb); | |
5270 | ||
5271 | buf_phys_addr = dma_map_single(dev->dev.parent, skb->data, | |
5272 | tx_desc->data_size, DMA_TO_DEVICE); | |
5273 | if (unlikely(dma_mapping_error(dev->dev.parent, buf_phys_addr))) { | |
5274 | mvpp2_txq_desc_put(txq); | |
5275 | frags = 0; | |
5276 | goto out; | |
5277 | } | |
5278 | tx_desc->packet_offset = buf_phys_addr & MVPP2_TX_DESC_ALIGN; | |
5279 | tx_desc->buf_phys_addr = buf_phys_addr & ~MVPP2_TX_DESC_ALIGN; | |
5280 | ||
5281 | tx_cmd = mvpp2_skb_tx_csum(port, skb); | |
5282 | ||
5283 | if (frags == 1) { | |
5284 | /* First and Last descriptor */ | |
5285 | tx_cmd |= MVPP2_TXD_F_DESC | MVPP2_TXD_L_DESC; | |
5286 | tx_desc->command = tx_cmd; | |
71ce391d | 5287 | mvpp2_txq_inc_put(txq_pcpu, skb, tx_desc); |
3f518509 MW |
5288 | } else { |
5289 | /* First but not Last */ | |
5290 | tx_cmd |= MVPP2_TXD_F_DESC | MVPP2_TXD_PADDING_DISABLE; | |
5291 | tx_desc->command = tx_cmd; | |
71ce391d | 5292 | mvpp2_txq_inc_put(txq_pcpu, NULL, tx_desc); |
3f518509 MW |
5293 | |
5294 | /* Continue with other skb fragments */ | |
5295 | if (mvpp2_tx_frag_process(port, skb, aggr_txq, txq)) { | |
5296 | tx_desc_unmap_put(port->dev->dev.parent, txq, tx_desc); | |
5297 | frags = 0; | |
5298 | goto out; | |
5299 | } | |
5300 | } | |
5301 | ||
5302 | txq_pcpu->reserved_num -= frags; | |
5303 | txq_pcpu->count += frags; | |
5304 | aggr_txq->count += frags; | |
5305 | ||
5306 | /* Enable transmit */ | |
5307 | wmb(); | |
5308 | mvpp2_aggr_txq_pend_desc_add(port, frags); | |
5309 | ||
5310 | if (txq_pcpu->size - txq_pcpu->count < MAX_SKB_FRAGS + 1) { | |
5311 | struct netdev_queue *nq = netdev_get_tx_queue(dev, txq_id); | |
5312 | ||
5313 | netif_tx_stop_queue(nq); | |
5314 | } | |
5315 | out: | |
5316 | if (frags > 0) { | |
5317 | struct mvpp2_pcpu_stats *stats = this_cpu_ptr(port->stats); | |
5318 | ||
5319 | u64_stats_update_begin(&stats->syncp); | |
5320 | stats->tx_packets++; | |
5321 | stats->tx_bytes += skb->len; | |
5322 | u64_stats_update_end(&stats->syncp); | |
5323 | } else { | |
5324 | dev->stats.tx_dropped++; | |
5325 | dev_kfree_skb_any(skb); | |
5326 | } | |
5327 | ||
edc660fa MW |
5328 | /* Finalize TX processing */ |
5329 | if (txq_pcpu->count >= txq->done_pkts_coal) | |
5330 | mvpp2_txq_done(port, txq, txq_pcpu); | |
5331 | ||
5332 | /* Set the timer in case not all frags were processed */ | |
5333 | if (txq_pcpu->count <= frags && txq_pcpu->count > 0) { | |
5334 | struct mvpp2_port_pcpu *port_pcpu = this_cpu_ptr(port->pcpu); | |
5335 | ||
5336 | mvpp2_timer_set(port_pcpu); | |
5337 | } | |
5338 | ||
3f518509 MW |
5339 | return NETDEV_TX_OK; |
5340 | } | |
5341 | ||
5342 | static inline void mvpp2_cause_error(struct net_device *dev, int cause) | |
5343 | { | |
5344 | if (cause & MVPP2_CAUSE_FCS_ERR_MASK) | |
5345 | netdev_err(dev, "FCS error\n"); | |
5346 | if (cause & MVPP2_CAUSE_RX_FIFO_OVERRUN_MASK) | |
5347 | netdev_err(dev, "rx fifo overrun error\n"); | |
5348 | if (cause & MVPP2_CAUSE_TX_FIFO_UNDERRUN_MASK) | |
5349 | netdev_err(dev, "tx fifo underrun error\n"); | |
5350 | } | |
5351 | ||
edc660fa | 5352 | static int mvpp2_poll(struct napi_struct *napi, int budget) |
3f518509 | 5353 | { |
edc660fa MW |
5354 | u32 cause_rx_tx, cause_rx, cause_misc; |
5355 | int rx_done = 0; | |
5356 | struct mvpp2_port *port = netdev_priv(napi->dev); | |
3f518509 MW |
5357 | |
5358 | /* Rx/Tx cause register | |
5359 | * | |
5360 | * Bits 0-15: each bit indicates received packets on the Rx queue | |
5361 | * (bit 0 is for Rx queue 0). | |
5362 | * | |
5363 | * Bits 16-23: each bit indicates transmitted packets on the Tx queue | |
5364 | * (bit 16 is for Tx queue 0). | |
5365 | * | |
5366 | * Each CPU has its own Rx/Tx cause register | |
5367 | */ | |
5368 | cause_rx_tx = mvpp2_read(port->priv, | |
5369 | MVPP2_ISR_RX_TX_CAUSE_REG(port->id)); | |
edc660fa | 5370 | cause_rx_tx &= ~MVPP2_CAUSE_TXQ_OCCUP_DESC_ALL_MASK; |
3f518509 MW |
5371 | cause_misc = cause_rx_tx & MVPP2_CAUSE_MISC_SUM_MASK; |
5372 | ||
5373 | if (cause_misc) { | |
5374 | mvpp2_cause_error(port->dev, cause_misc); | |
5375 | ||
5376 | /* Clear the cause register */ | |
5377 | mvpp2_write(port->priv, MVPP2_ISR_MISC_CAUSE_REG, 0); | |
5378 | mvpp2_write(port->priv, MVPP2_ISR_RX_TX_CAUSE_REG(port->id), | |
5379 | cause_rx_tx & ~MVPP2_CAUSE_MISC_SUM_MASK); | |
5380 | } | |
5381 | ||
3f518509 MW |
5382 | cause_rx = cause_rx_tx & MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK; |
5383 | ||
5384 | /* Process RX packets */ | |
5385 | cause_rx |= port->pending_cause_rx; | |
5386 | while (cause_rx && budget > 0) { | |
5387 | int count; | |
5388 | struct mvpp2_rx_queue *rxq; | |
5389 | ||
5390 | rxq = mvpp2_get_rx_queue(port, cause_rx); | |
5391 | if (!rxq) | |
5392 | break; | |
5393 | ||
5394 | count = mvpp2_rx(port, budget, rxq); | |
5395 | rx_done += count; | |
5396 | budget -= count; | |
5397 | if (budget > 0) { | |
5398 | /* Clear the bit associated to this Rx queue | |
5399 | * so that next iteration will continue from | |
5400 | * the next Rx queue. | |
5401 | */ | |
5402 | cause_rx &= ~(1 << rxq->logic_rxq); | |
5403 | } | |
5404 | } | |
5405 | ||
5406 | if (budget > 0) { | |
5407 | cause_rx = 0; | |
5408 | napi_complete(napi); | |
5409 | ||
5410 | mvpp2_interrupts_enable(port); | |
5411 | } | |
5412 | port->pending_cause_rx = cause_rx; | |
5413 | return rx_done; | |
5414 | } | |
5415 | ||
5416 | /* Set hw internals when starting port */ | |
5417 | static void mvpp2_start_dev(struct mvpp2_port *port) | |
5418 | { | |
5419 | mvpp2_gmac_max_rx_size_set(port); | |
5420 | mvpp2_txp_max_tx_size_set(port); | |
5421 | ||
5422 | napi_enable(&port->napi); | |
5423 | ||
5424 | /* Enable interrupts on all CPUs */ | |
5425 | mvpp2_interrupts_enable(port); | |
5426 | ||
5427 | mvpp2_port_enable(port); | |
5428 | phy_start(port->phy_dev); | |
5429 | netif_tx_start_all_queues(port->dev); | |
5430 | } | |
5431 | ||
5432 | /* Set hw internals when stopping port */ | |
5433 | static void mvpp2_stop_dev(struct mvpp2_port *port) | |
5434 | { | |
5435 | /* Stop new packets from arriving to RXQs */ | |
5436 | mvpp2_ingress_disable(port); | |
5437 | ||
5438 | mdelay(10); | |
5439 | ||
5440 | /* Disable interrupts on all CPUs */ | |
5441 | mvpp2_interrupts_disable(port); | |
5442 | ||
5443 | napi_disable(&port->napi); | |
5444 | ||
5445 | netif_carrier_off(port->dev); | |
5446 | netif_tx_stop_all_queues(port->dev); | |
5447 | ||
5448 | mvpp2_egress_disable(port); | |
5449 | mvpp2_port_disable(port); | |
5450 | phy_stop(port->phy_dev); | |
5451 | } | |
5452 | ||
5453 | /* Return positive if MTU is valid */ | |
5454 | static inline int mvpp2_check_mtu_valid(struct net_device *dev, int mtu) | |
5455 | { | |
5456 | if (mtu < 68) { | |
5457 | netdev_err(dev, "cannot change mtu to less than 68\n"); | |
5458 | return -EINVAL; | |
5459 | } | |
5460 | ||
5461 | /* 9676 == 9700 - 20 and rounding to 8 */ | |
5462 | if (mtu > 9676) { | |
5463 | netdev_info(dev, "illegal MTU value %d, round to 9676\n", mtu); | |
5464 | mtu = 9676; | |
5465 | } | |
5466 | ||
5467 | if (!IS_ALIGNED(MVPP2_RX_PKT_SIZE(mtu), 8)) { | |
5468 | netdev_info(dev, "illegal MTU value %d, round to %d\n", mtu, | |
5469 | ALIGN(MVPP2_RX_PKT_SIZE(mtu), 8)); | |
5470 | mtu = ALIGN(MVPP2_RX_PKT_SIZE(mtu), 8); | |
5471 | } | |
5472 | ||
5473 | return mtu; | |
5474 | } | |
5475 | ||
5476 | static int mvpp2_check_ringparam_valid(struct net_device *dev, | |
5477 | struct ethtool_ringparam *ring) | |
5478 | { | |
5479 | u16 new_rx_pending = ring->rx_pending; | |
5480 | u16 new_tx_pending = ring->tx_pending; | |
5481 | ||
5482 | if (ring->rx_pending == 0 || ring->tx_pending == 0) | |
5483 | return -EINVAL; | |
5484 | ||
5485 | if (ring->rx_pending > MVPP2_MAX_RXD) | |
5486 | new_rx_pending = MVPP2_MAX_RXD; | |
5487 | else if (!IS_ALIGNED(ring->rx_pending, 16)) | |
5488 | new_rx_pending = ALIGN(ring->rx_pending, 16); | |
5489 | ||
5490 | if (ring->tx_pending > MVPP2_MAX_TXD) | |
5491 | new_tx_pending = MVPP2_MAX_TXD; | |
5492 | else if (!IS_ALIGNED(ring->tx_pending, 32)) | |
5493 | new_tx_pending = ALIGN(ring->tx_pending, 32); | |
5494 | ||
5495 | if (ring->rx_pending != new_rx_pending) { | |
5496 | netdev_info(dev, "illegal Rx ring size value %d, round to %d\n", | |
5497 | ring->rx_pending, new_rx_pending); | |
5498 | ring->rx_pending = new_rx_pending; | |
5499 | } | |
5500 | ||
5501 | if (ring->tx_pending != new_tx_pending) { | |
5502 | netdev_info(dev, "illegal Tx ring size value %d, round to %d\n", | |
5503 | ring->tx_pending, new_tx_pending); | |
5504 | ring->tx_pending = new_tx_pending; | |
5505 | } | |
5506 | ||
5507 | return 0; | |
5508 | } | |
5509 | ||
5510 | static void mvpp2_get_mac_address(struct mvpp2_port *port, unsigned char *addr) | |
5511 | { | |
5512 | u32 mac_addr_l, mac_addr_m, mac_addr_h; | |
5513 | ||
5514 | mac_addr_l = readl(port->base + MVPP2_GMAC_CTRL_1_REG); | |
5515 | mac_addr_m = readl(port->priv->lms_base + MVPP2_SRC_ADDR_MIDDLE); | |
5516 | mac_addr_h = readl(port->priv->lms_base + MVPP2_SRC_ADDR_HIGH); | |
5517 | addr[0] = (mac_addr_h >> 24) & 0xFF; | |
5518 | addr[1] = (mac_addr_h >> 16) & 0xFF; | |
5519 | addr[2] = (mac_addr_h >> 8) & 0xFF; | |
5520 | addr[3] = mac_addr_h & 0xFF; | |
5521 | addr[4] = mac_addr_m & 0xFF; | |
5522 | addr[5] = (mac_addr_l >> MVPP2_GMAC_SA_LOW_OFFS) & 0xFF; | |
5523 | } | |
5524 | ||
5525 | static int mvpp2_phy_connect(struct mvpp2_port *port) | |
5526 | { | |
5527 | struct phy_device *phy_dev; | |
5528 | ||
5529 | phy_dev = of_phy_connect(port->dev, port->phy_node, mvpp2_link_event, 0, | |
5530 | port->phy_interface); | |
5531 | if (!phy_dev) { | |
5532 | netdev_err(port->dev, "cannot connect to phy\n"); | |
5533 | return -ENODEV; | |
5534 | } | |
5535 | phy_dev->supported &= PHY_GBIT_FEATURES; | |
5536 | phy_dev->advertising = phy_dev->supported; | |
5537 | ||
5538 | port->phy_dev = phy_dev; | |
5539 | port->link = 0; | |
5540 | port->duplex = 0; | |
5541 | port->speed = 0; | |
5542 | ||
5543 | return 0; | |
5544 | } | |
5545 | ||
5546 | static void mvpp2_phy_disconnect(struct mvpp2_port *port) | |
5547 | { | |
5548 | phy_disconnect(port->phy_dev); | |
5549 | port->phy_dev = NULL; | |
5550 | } | |
5551 | ||
5552 | static int mvpp2_open(struct net_device *dev) | |
5553 | { | |
5554 | struct mvpp2_port *port = netdev_priv(dev); | |
5555 | unsigned char mac_bcast[ETH_ALEN] = { | |
5556 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; | |
5557 | int err; | |
5558 | ||
5559 | err = mvpp2_prs_mac_da_accept(port->priv, port->id, mac_bcast, true); | |
5560 | if (err) { | |
5561 | netdev_err(dev, "mvpp2_prs_mac_da_accept BC failed\n"); | |
5562 | return err; | |
5563 | } | |
5564 | err = mvpp2_prs_mac_da_accept(port->priv, port->id, | |
5565 | dev->dev_addr, true); | |
5566 | if (err) { | |
5567 | netdev_err(dev, "mvpp2_prs_mac_da_accept MC failed\n"); | |
5568 | return err; | |
5569 | } | |
5570 | err = mvpp2_prs_tag_mode_set(port->priv, port->id, MVPP2_TAG_TYPE_MH); | |
5571 | if (err) { | |
5572 | netdev_err(dev, "mvpp2_prs_tag_mode_set failed\n"); | |
5573 | return err; | |
5574 | } | |
5575 | err = mvpp2_prs_def_flow(port); | |
5576 | if (err) { | |
5577 | netdev_err(dev, "mvpp2_prs_def_flow failed\n"); | |
5578 | return err; | |
5579 | } | |
5580 | ||
5581 | /* Allocate the Rx/Tx queues */ | |
5582 | err = mvpp2_setup_rxqs(port); | |
5583 | if (err) { | |
5584 | netdev_err(port->dev, "cannot allocate Rx queues\n"); | |
5585 | return err; | |
5586 | } | |
5587 | ||
5588 | err = mvpp2_setup_txqs(port); | |
5589 | if (err) { | |
5590 | netdev_err(port->dev, "cannot allocate Tx queues\n"); | |
5591 | goto err_cleanup_rxqs; | |
5592 | } | |
5593 | ||
5594 | err = request_irq(port->irq, mvpp2_isr, 0, dev->name, port); | |
5595 | if (err) { | |
5596 | netdev_err(port->dev, "cannot request IRQ %d\n", port->irq); | |
5597 | goto err_cleanup_txqs; | |
5598 | } | |
5599 | ||
5600 | /* In default link is down */ | |
5601 | netif_carrier_off(port->dev); | |
5602 | ||
5603 | err = mvpp2_phy_connect(port); | |
5604 | if (err < 0) | |
5605 | goto err_free_irq; | |
5606 | ||
5607 | /* Unmask interrupts on all CPUs */ | |
5608 | on_each_cpu(mvpp2_interrupts_unmask, port, 1); | |
5609 | ||
5610 | mvpp2_start_dev(port); | |
5611 | ||
5612 | return 0; | |
5613 | ||
5614 | err_free_irq: | |
5615 | free_irq(port->irq, port); | |
5616 | err_cleanup_txqs: | |
5617 | mvpp2_cleanup_txqs(port); | |
5618 | err_cleanup_rxqs: | |
5619 | mvpp2_cleanup_rxqs(port); | |
5620 | return err; | |
5621 | } | |
5622 | ||
5623 | static int mvpp2_stop(struct net_device *dev) | |
5624 | { | |
5625 | struct mvpp2_port *port = netdev_priv(dev); | |
edc660fa MW |
5626 | struct mvpp2_port_pcpu *port_pcpu; |
5627 | int cpu; | |
3f518509 MW |
5628 | |
5629 | mvpp2_stop_dev(port); | |
5630 | mvpp2_phy_disconnect(port); | |
5631 | ||
5632 | /* Mask interrupts on all CPUs */ | |
5633 | on_each_cpu(mvpp2_interrupts_mask, port, 1); | |
5634 | ||
5635 | free_irq(port->irq, port); | |
edc660fa MW |
5636 | for_each_present_cpu(cpu) { |
5637 | port_pcpu = per_cpu_ptr(port->pcpu, cpu); | |
5638 | ||
5639 | hrtimer_cancel(&port_pcpu->tx_done_timer); | |
5640 | port_pcpu->timer_scheduled = false; | |
5641 | tasklet_kill(&port_pcpu->tx_done_tasklet); | |
5642 | } | |
3f518509 MW |
5643 | mvpp2_cleanup_rxqs(port); |
5644 | mvpp2_cleanup_txqs(port); | |
5645 | ||
5646 | return 0; | |
5647 | } | |
5648 | ||
5649 | static void mvpp2_set_rx_mode(struct net_device *dev) | |
5650 | { | |
5651 | struct mvpp2_port *port = netdev_priv(dev); | |
5652 | struct mvpp2 *priv = port->priv; | |
5653 | struct netdev_hw_addr *ha; | |
5654 | int id = port->id; | |
5655 | bool allmulti = dev->flags & IFF_ALLMULTI; | |
5656 | ||
5657 | mvpp2_prs_mac_promisc_set(priv, id, dev->flags & IFF_PROMISC); | |
5658 | mvpp2_prs_mac_multi_set(priv, id, MVPP2_PE_MAC_MC_ALL, allmulti); | |
5659 | mvpp2_prs_mac_multi_set(priv, id, MVPP2_PE_MAC_MC_IP6, allmulti); | |
5660 | ||
5661 | /* Remove all port->id's mcast enries */ | |
5662 | mvpp2_prs_mcast_del_all(priv, id); | |
5663 | ||
5664 | if (allmulti && !netdev_mc_empty(dev)) { | |
5665 | netdev_for_each_mc_addr(ha, dev) | |
5666 | mvpp2_prs_mac_da_accept(priv, id, ha->addr, true); | |
5667 | } | |
5668 | } | |
5669 | ||
5670 | static int mvpp2_set_mac_address(struct net_device *dev, void *p) | |
5671 | { | |
5672 | struct mvpp2_port *port = netdev_priv(dev); | |
5673 | const struct sockaddr *addr = p; | |
5674 | int err; | |
5675 | ||
5676 | if (!is_valid_ether_addr(addr->sa_data)) { | |
5677 | err = -EADDRNOTAVAIL; | |
5678 | goto error; | |
5679 | } | |
5680 | ||
5681 | if (!netif_running(dev)) { | |
5682 | err = mvpp2_prs_update_mac_da(dev, addr->sa_data); | |
5683 | if (!err) | |
5684 | return 0; | |
5685 | /* Reconfigure parser to accept the original MAC address */ | |
5686 | err = mvpp2_prs_update_mac_da(dev, dev->dev_addr); | |
5687 | if (err) | |
5688 | goto error; | |
5689 | } | |
5690 | ||
5691 | mvpp2_stop_dev(port); | |
5692 | ||
5693 | err = mvpp2_prs_update_mac_da(dev, addr->sa_data); | |
5694 | if (!err) | |
5695 | goto out_start; | |
5696 | ||
5697 | /* Reconfigure parser accept the original MAC address */ | |
5698 | err = mvpp2_prs_update_mac_da(dev, dev->dev_addr); | |
5699 | if (err) | |
5700 | goto error; | |
5701 | out_start: | |
5702 | mvpp2_start_dev(port); | |
5703 | mvpp2_egress_enable(port); | |
5704 | mvpp2_ingress_enable(port); | |
5705 | return 0; | |
5706 | ||
5707 | error: | |
5708 | netdev_err(dev, "fail to change MAC address\n"); | |
5709 | return err; | |
5710 | } | |
5711 | ||
5712 | static int mvpp2_change_mtu(struct net_device *dev, int mtu) | |
5713 | { | |
5714 | struct mvpp2_port *port = netdev_priv(dev); | |
5715 | int err; | |
5716 | ||
5717 | mtu = mvpp2_check_mtu_valid(dev, mtu); | |
5718 | if (mtu < 0) { | |
5719 | err = mtu; | |
5720 | goto error; | |
5721 | } | |
5722 | ||
5723 | if (!netif_running(dev)) { | |
5724 | err = mvpp2_bm_update_mtu(dev, mtu); | |
5725 | if (!err) { | |
5726 | port->pkt_size = MVPP2_RX_PKT_SIZE(mtu); | |
5727 | return 0; | |
5728 | } | |
5729 | ||
5730 | /* Reconfigure BM to the original MTU */ | |
5731 | err = mvpp2_bm_update_mtu(dev, dev->mtu); | |
5732 | if (err) | |
5733 | goto error; | |
5734 | } | |
5735 | ||
5736 | mvpp2_stop_dev(port); | |
5737 | ||
5738 | err = mvpp2_bm_update_mtu(dev, mtu); | |
5739 | if (!err) { | |
5740 | port->pkt_size = MVPP2_RX_PKT_SIZE(mtu); | |
5741 | goto out_start; | |
5742 | } | |
5743 | ||
5744 | /* Reconfigure BM to the original MTU */ | |
5745 | err = mvpp2_bm_update_mtu(dev, dev->mtu); | |
5746 | if (err) | |
5747 | goto error; | |
5748 | ||
5749 | out_start: | |
5750 | mvpp2_start_dev(port); | |
5751 | mvpp2_egress_enable(port); | |
5752 | mvpp2_ingress_enable(port); | |
5753 | ||
5754 | return 0; | |
5755 | ||
5756 | error: | |
5757 | netdev_err(dev, "fail to change MTU\n"); | |
5758 | return err; | |
5759 | } | |
5760 | ||
5761 | static struct rtnl_link_stats64 * | |
5762 | mvpp2_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) | |
5763 | { | |
5764 | struct mvpp2_port *port = netdev_priv(dev); | |
5765 | unsigned int start; | |
5766 | int cpu; | |
5767 | ||
5768 | for_each_possible_cpu(cpu) { | |
5769 | struct mvpp2_pcpu_stats *cpu_stats; | |
5770 | u64 rx_packets; | |
5771 | u64 rx_bytes; | |
5772 | u64 tx_packets; | |
5773 | u64 tx_bytes; | |
5774 | ||
5775 | cpu_stats = per_cpu_ptr(port->stats, cpu); | |
5776 | do { | |
5777 | start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); | |
5778 | rx_packets = cpu_stats->rx_packets; | |
5779 | rx_bytes = cpu_stats->rx_bytes; | |
5780 | tx_packets = cpu_stats->tx_packets; | |
5781 | tx_bytes = cpu_stats->tx_bytes; | |
5782 | } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); | |
5783 | ||
5784 | stats->rx_packets += rx_packets; | |
5785 | stats->rx_bytes += rx_bytes; | |
5786 | stats->tx_packets += tx_packets; | |
5787 | stats->tx_bytes += tx_bytes; | |
5788 | } | |
5789 | ||
5790 | stats->rx_errors = dev->stats.rx_errors; | |
5791 | stats->rx_dropped = dev->stats.rx_dropped; | |
5792 | stats->tx_dropped = dev->stats.tx_dropped; | |
5793 | ||
5794 | return stats; | |
5795 | } | |
5796 | ||
bd695a5f TP |
5797 | static int mvpp2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
5798 | { | |
5799 | struct mvpp2_port *port = netdev_priv(dev); | |
5800 | int ret; | |
5801 | ||
5802 | if (!port->phy_dev) | |
5803 | return -ENOTSUPP; | |
5804 | ||
5805 | ret = phy_mii_ioctl(port->phy_dev, ifr, cmd); | |
5806 | if (!ret) | |
5807 | mvpp2_link_event(dev); | |
5808 | ||
5809 | return ret; | |
5810 | } | |
5811 | ||
3f518509 MW |
5812 | /* Ethtool methods */ |
5813 | ||
5814 | /* Get settings (phy address, speed) for ethtools */ | |
5815 | static int mvpp2_ethtool_get_settings(struct net_device *dev, | |
5816 | struct ethtool_cmd *cmd) | |
5817 | { | |
5818 | struct mvpp2_port *port = netdev_priv(dev); | |
5819 | ||
5820 | if (!port->phy_dev) | |
5821 | return -ENODEV; | |
5822 | return phy_ethtool_gset(port->phy_dev, cmd); | |
5823 | } | |
5824 | ||
5825 | /* Set settings (phy address, speed) for ethtools */ | |
5826 | static int mvpp2_ethtool_set_settings(struct net_device *dev, | |
5827 | struct ethtool_cmd *cmd) | |
5828 | { | |
5829 | struct mvpp2_port *port = netdev_priv(dev); | |
5830 | ||
5831 | if (!port->phy_dev) | |
5832 | return -ENODEV; | |
5833 | return phy_ethtool_sset(port->phy_dev, cmd); | |
5834 | } | |
5835 | ||
5836 | /* Set interrupt coalescing for ethtools */ | |
5837 | static int mvpp2_ethtool_set_coalesce(struct net_device *dev, | |
5838 | struct ethtool_coalesce *c) | |
5839 | { | |
5840 | struct mvpp2_port *port = netdev_priv(dev); | |
5841 | int queue; | |
5842 | ||
5843 | for (queue = 0; queue < rxq_number; queue++) { | |
5844 | struct mvpp2_rx_queue *rxq = port->rxqs[queue]; | |
5845 | ||
5846 | rxq->time_coal = c->rx_coalesce_usecs; | |
5847 | rxq->pkts_coal = c->rx_max_coalesced_frames; | |
5848 | mvpp2_rx_pkts_coal_set(port, rxq, rxq->pkts_coal); | |
5849 | mvpp2_rx_time_coal_set(port, rxq, rxq->time_coal); | |
5850 | } | |
5851 | ||
5852 | for (queue = 0; queue < txq_number; queue++) { | |
5853 | struct mvpp2_tx_queue *txq = port->txqs[queue]; | |
5854 | ||
5855 | txq->done_pkts_coal = c->tx_max_coalesced_frames; | |
5856 | } | |
5857 | ||
3f518509 MW |
5858 | return 0; |
5859 | } | |
5860 | ||
5861 | /* get coalescing for ethtools */ | |
5862 | static int mvpp2_ethtool_get_coalesce(struct net_device *dev, | |
5863 | struct ethtool_coalesce *c) | |
5864 | { | |
5865 | struct mvpp2_port *port = netdev_priv(dev); | |
5866 | ||
5867 | c->rx_coalesce_usecs = port->rxqs[0]->time_coal; | |
5868 | c->rx_max_coalesced_frames = port->rxqs[0]->pkts_coal; | |
5869 | c->tx_max_coalesced_frames = port->txqs[0]->done_pkts_coal; | |
5870 | return 0; | |
5871 | } | |
5872 | ||
5873 | static void mvpp2_ethtool_get_drvinfo(struct net_device *dev, | |
5874 | struct ethtool_drvinfo *drvinfo) | |
5875 | { | |
5876 | strlcpy(drvinfo->driver, MVPP2_DRIVER_NAME, | |
5877 | sizeof(drvinfo->driver)); | |
5878 | strlcpy(drvinfo->version, MVPP2_DRIVER_VERSION, | |
5879 | sizeof(drvinfo->version)); | |
5880 | strlcpy(drvinfo->bus_info, dev_name(&dev->dev), | |
5881 | sizeof(drvinfo->bus_info)); | |
5882 | } | |
5883 | ||
5884 | static void mvpp2_ethtool_get_ringparam(struct net_device *dev, | |
5885 | struct ethtool_ringparam *ring) | |
5886 | { | |
5887 | struct mvpp2_port *port = netdev_priv(dev); | |
5888 | ||
5889 | ring->rx_max_pending = MVPP2_MAX_RXD; | |
5890 | ring->tx_max_pending = MVPP2_MAX_TXD; | |
5891 | ring->rx_pending = port->rx_ring_size; | |
5892 | ring->tx_pending = port->tx_ring_size; | |
5893 | } | |
5894 | ||
5895 | static int mvpp2_ethtool_set_ringparam(struct net_device *dev, | |
5896 | struct ethtool_ringparam *ring) | |
5897 | { | |
5898 | struct mvpp2_port *port = netdev_priv(dev); | |
5899 | u16 prev_rx_ring_size = port->rx_ring_size; | |
5900 | u16 prev_tx_ring_size = port->tx_ring_size; | |
5901 | int err; | |
5902 | ||
5903 | err = mvpp2_check_ringparam_valid(dev, ring); | |
5904 | if (err) | |
5905 | return err; | |
5906 | ||
5907 | if (!netif_running(dev)) { | |
5908 | port->rx_ring_size = ring->rx_pending; | |
5909 | port->tx_ring_size = ring->tx_pending; | |
5910 | return 0; | |
5911 | } | |
5912 | ||
5913 | /* The interface is running, so we have to force a | |
5914 | * reallocation of the queues | |
5915 | */ | |
5916 | mvpp2_stop_dev(port); | |
5917 | mvpp2_cleanup_rxqs(port); | |
5918 | mvpp2_cleanup_txqs(port); | |
5919 | ||
5920 | port->rx_ring_size = ring->rx_pending; | |
5921 | port->tx_ring_size = ring->tx_pending; | |
5922 | ||
5923 | err = mvpp2_setup_rxqs(port); | |
5924 | if (err) { | |
5925 | /* Reallocate Rx queues with the original ring size */ | |
5926 | port->rx_ring_size = prev_rx_ring_size; | |
5927 | ring->rx_pending = prev_rx_ring_size; | |
5928 | err = mvpp2_setup_rxqs(port); | |
5929 | if (err) | |
5930 | goto err_out; | |
5931 | } | |
5932 | err = mvpp2_setup_txqs(port); | |
5933 | if (err) { | |
5934 | /* Reallocate Tx queues with the original ring size */ | |
5935 | port->tx_ring_size = prev_tx_ring_size; | |
5936 | ring->tx_pending = prev_tx_ring_size; | |
5937 | err = mvpp2_setup_txqs(port); | |
5938 | if (err) | |
5939 | goto err_clean_rxqs; | |
5940 | } | |
5941 | ||
5942 | mvpp2_start_dev(port); | |
5943 | mvpp2_egress_enable(port); | |
5944 | mvpp2_ingress_enable(port); | |
5945 | ||
5946 | return 0; | |
5947 | ||
5948 | err_clean_rxqs: | |
5949 | mvpp2_cleanup_rxqs(port); | |
5950 | err_out: | |
5951 | netdev_err(dev, "fail to change ring parameters"); | |
5952 | return err; | |
5953 | } | |
5954 | ||
5955 | /* Device ops */ | |
5956 | ||
5957 | static const struct net_device_ops mvpp2_netdev_ops = { | |
5958 | .ndo_open = mvpp2_open, | |
5959 | .ndo_stop = mvpp2_stop, | |
5960 | .ndo_start_xmit = mvpp2_tx, | |
5961 | .ndo_set_rx_mode = mvpp2_set_rx_mode, | |
5962 | .ndo_set_mac_address = mvpp2_set_mac_address, | |
5963 | .ndo_change_mtu = mvpp2_change_mtu, | |
5964 | .ndo_get_stats64 = mvpp2_get_stats64, | |
bd695a5f | 5965 | .ndo_do_ioctl = mvpp2_ioctl, |
3f518509 MW |
5966 | }; |
5967 | ||
5968 | static const struct ethtool_ops mvpp2_eth_tool_ops = { | |
5969 | .get_link = ethtool_op_get_link, | |
5970 | .get_settings = mvpp2_ethtool_get_settings, | |
5971 | .set_settings = mvpp2_ethtool_set_settings, | |
5972 | .set_coalesce = mvpp2_ethtool_set_coalesce, | |
5973 | .get_coalesce = mvpp2_ethtool_get_coalesce, | |
5974 | .get_drvinfo = mvpp2_ethtool_get_drvinfo, | |
5975 | .get_ringparam = mvpp2_ethtool_get_ringparam, | |
5976 | .set_ringparam = mvpp2_ethtool_set_ringparam, | |
5977 | }; | |
5978 | ||
5979 | /* Driver initialization */ | |
5980 | ||
5981 | static void mvpp2_port_power_up(struct mvpp2_port *port) | |
5982 | { | |
5983 | mvpp2_port_mii_set(port); | |
5984 | mvpp2_port_periodic_xon_disable(port); | |
08a23755 | 5985 | mvpp2_port_fc_adv_enable(port); |
3f518509 MW |
5986 | mvpp2_port_reset(port); |
5987 | } | |
5988 | ||
5989 | /* Initialize port HW */ | |
5990 | static int mvpp2_port_init(struct mvpp2_port *port) | |
5991 | { | |
5992 | struct device *dev = port->dev->dev.parent; | |
5993 | struct mvpp2 *priv = port->priv; | |
5994 | struct mvpp2_txq_pcpu *txq_pcpu; | |
5995 | int queue, cpu, err; | |
5996 | ||
5997 | if (port->first_rxq + rxq_number > MVPP2_RXQ_TOTAL_NUM) | |
5998 | return -EINVAL; | |
5999 | ||
6000 | /* Disable port */ | |
6001 | mvpp2_egress_disable(port); | |
6002 | mvpp2_port_disable(port); | |
6003 | ||
6004 | port->txqs = devm_kcalloc(dev, txq_number, sizeof(*port->txqs), | |
6005 | GFP_KERNEL); | |
6006 | if (!port->txqs) | |
6007 | return -ENOMEM; | |
6008 | ||
6009 | /* Associate physical Tx queues to this port and initialize. | |
6010 | * The mapping is predefined. | |
6011 | */ | |
6012 | for (queue = 0; queue < txq_number; queue++) { | |
6013 | int queue_phy_id = mvpp2_txq_phys(port->id, queue); | |
6014 | struct mvpp2_tx_queue *txq; | |
6015 | ||
6016 | txq = devm_kzalloc(dev, sizeof(*txq), GFP_KERNEL); | |
6017 | if (!txq) | |
6018 | return -ENOMEM; | |
6019 | ||
6020 | txq->pcpu = alloc_percpu(struct mvpp2_txq_pcpu); | |
6021 | if (!txq->pcpu) { | |
6022 | err = -ENOMEM; | |
6023 | goto err_free_percpu; | |
6024 | } | |
6025 | ||
6026 | txq->id = queue_phy_id; | |
6027 | txq->log_id = queue; | |
6028 | txq->done_pkts_coal = MVPP2_TXDONE_COAL_PKTS_THRESH; | |
6029 | for_each_present_cpu(cpu) { | |
6030 | txq_pcpu = per_cpu_ptr(txq->pcpu, cpu); | |
6031 | txq_pcpu->cpu = cpu; | |
6032 | } | |
6033 | ||
6034 | port->txqs[queue] = txq; | |
6035 | } | |
6036 | ||
6037 | port->rxqs = devm_kcalloc(dev, rxq_number, sizeof(*port->rxqs), | |
6038 | GFP_KERNEL); | |
6039 | if (!port->rxqs) { | |
6040 | err = -ENOMEM; | |
6041 | goto err_free_percpu; | |
6042 | } | |
6043 | ||
6044 | /* Allocate and initialize Rx queue for this port */ | |
6045 | for (queue = 0; queue < rxq_number; queue++) { | |
6046 | struct mvpp2_rx_queue *rxq; | |
6047 | ||
6048 | /* Map physical Rx queue to port's logical Rx queue */ | |
6049 | rxq = devm_kzalloc(dev, sizeof(*rxq), GFP_KERNEL); | |
d82b0c21 JZ |
6050 | if (!rxq) { |
6051 | err = -ENOMEM; | |
3f518509 | 6052 | goto err_free_percpu; |
d82b0c21 | 6053 | } |
3f518509 MW |
6054 | /* Map this Rx queue to a physical queue */ |
6055 | rxq->id = port->first_rxq + queue; | |
6056 | rxq->port = port->id; | |
6057 | rxq->logic_rxq = queue; | |
6058 | ||
6059 | port->rxqs[queue] = rxq; | |
6060 | } | |
6061 | ||
6062 | /* Configure Rx queue group interrupt for this port */ | |
6063 | mvpp2_write(priv, MVPP2_ISR_RXQ_GROUP_REG(port->id), rxq_number); | |
6064 | ||
6065 | /* Create Rx descriptor rings */ | |
6066 | for (queue = 0; queue < rxq_number; queue++) { | |
6067 | struct mvpp2_rx_queue *rxq = port->rxqs[queue]; | |
6068 | ||
6069 | rxq->size = port->rx_ring_size; | |
6070 | rxq->pkts_coal = MVPP2_RX_COAL_PKTS; | |
6071 | rxq->time_coal = MVPP2_RX_COAL_USEC; | |
6072 | } | |
6073 | ||
6074 | mvpp2_ingress_disable(port); | |
6075 | ||
6076 | /* Port default configuration */ | |
6077 | mvpp2_defaults_set(port); | |
6078 | ||
6079 | /* Port's classifier configuration */ | |
6080 | mvpp2_cls_oversize_rxq_set(port); | |
6081 | mvpp2_cls_port_config(port); | |
6082 | ||
6083 | /* Provide an initial Rx packet size */ | |
6084 | port->pkt_size = MVPP2_RX_PKT_SIZE(port->dev->mtu); | |
6085 | ||
6086 | /* Initialize pools for swf */ | |
6087 | err = mvpp2_swf_bm_pool_init(port); | |
6088 | if (err) | |
6089 | goto err_free_percpu; | |
6090 | ||
6091 | return 0; | |
6092 | ||
6093 | err_free_percpu: | |
6094 | for (queue = 0; queue < txq_number; queue++) { | |
6095 | if (!port->txqs[queue]) | |
6096 | continue; | |
6097 | free_percpu(port->txqs[queue]->pcpu); | |
6098 | } | |
6099 | return err; | |
6100 | } | |
6101 | ||
6102 | /* Ports initialization */ | |
6103 | static int mvpp2_port_probe(struct platform_device *pdev, | |
6104 | struct device_node *port_node, | |
6105 | struct mvpp2 *priv, | |
6106 | int *next_first_rxq) | |
6107 | { | |
6108 | struct device_node *phy_node; | |
6109 | struct mvpp2_port *port; | |
edc660fa | 6110 | struct mvpp2_port_pcpu *port_pcpu; |
3f518509 MW |
6111 | struct net_device *dev; |
6112 | struct resource *res; | |
6113 | const char *dt_mac_addr; | |
6114 | const char *mac_from; | |
6115 | char hw_mac_addr[ETH_ALEN]; | |
6116 | u32 id; | |
6117 | int features; | |
6118 | int phy_mode; | |
6119 | int priv_common_regs_num = 2; | |
edc660fa | 6120 | int err, i, cpu; |
3f518509 MW |
6121 | |
6122 | dev = alloc_etherdev_mqs(sizeof(struct mvpp2_port), txq_number, | |
6123 | rxq_number); | |
6124 | if (!dev) | |
6125 | return -ENOMEM; | |
6126 | ||
6127 | phy_node = of_parse_phandle(port_node, "phy", 0); | |
6128 | if (!phy_node) { | |
6129 | dev_err(&pdev->dev, "missing phy\n"); | |
6130 | err = -ENODEV; | |
6131 | goto err_free_netdev; | |
6132 | } | |
6133 | ||
6134 | phy_mode = of_get_phy_mode(port_node); | |
6135 | if (phy_mode < 0) { | |
6136 | dev_err(&pdev->dev, "incorrect phy mode\n"); | |
6137 | err = phy_mode; | |
6138 | goto err_free_netdev; | |
6139 | } | |
6140 | ||
6141 | if (of_property_read_u32(port_node, "port-id", &id)) { | |
6142 | err = -EINVAL; | |
6143 | dev_err(&pdev->dev, "missing port-id value\n"); | |
6144 | goto err_free_netdev; | |
6145 | } | |
6146 | ||
6147 | dev->tx_queue_len = MVPP2_MAX_TXD; | |
6148 | dev->watchdog_timeo = 5 * HZ; | |
6149 | dev->netdev_ops = &mvpp2_netdev_ops; | |
6150 | dev->ethtool_ops = &mvpp2_eth_tool_ops; | |
6151 | ||
6152 | port = netdev_priv(dev); | |
6153 | ||
6154 | port->irq = irq_of_parse_and_map(port_node, 0); | |
6155 | if (port->irq <= 0) { | |
6156 | err = -EINVAL; | |
6157 | goto err_free_netdev; | |
6158 | } | |
6159 | ||
6160 | if (of_property_read_bool(port_node, "marvell,loopback")) | |
6161 | port->flags |= MVPP2_F_LOOPBACK; | |
6162 | ||
6163 | port->priv = priv; | |
6164 | port->id = id; | |
6165 | port->first_rxq = *next_first_rxq; | |
6166 | port->phy_node = phy_node; | |
6167 | port->phy_interface = phy_mode; | |
6168 | ||
6169 | res = platform_get_resource(pdev, IORESOURCE_MEM, | |
6170 | priv_common_regs_num + id); | |
6171 | port->base = devm_ioremap_resource(&pdev->dev, res); | |
6172 | if (IS_ERR(port->base)) { | |
6173 | err = PTR_ERR(port->base); | |
3f518509 MW |
6174 | goto err_free_irq; |
6175 | } | |
6176 | ||
6177 | /* Alloc per-cpu stats */ | |
6178 | port->stats = netdev_alloc_pcpu_stats(struct mvpp2_pcpu_stats); | |
6179 | if (!port->stats) { | |
6180 | err = -ENOMEM; | |
6181 | goto err_free_irq; | |
6182 | } | |
6183 | ||
6184 | dt_mac_addr = of_get_mac_address(port_node); | |
6185 | if (dt_mac_addr && is_valid_ether_addr(dt_mac_addr)) { | |
6186 | mac_from = "device tree"; | |
6187 | ether_addr_copy(dev->dev_addr, dt_mac_addr); | |
6188 | } else { | |
6189 | mvpp2_get_mac_address(port, hw_mac_addr); | |
6190 | if (is_valid_ether_addr(hw_mac_addr)) { | |
6191 | mac_from = "hardware"; | |
6192 | ether_addr_copy(dev->dev_addr, hw_mac_addr); | |
6193 | } else { | |
6194 | mac_from = "random"; | |
6195 | eth_hw_addr_random(dev); | |
6196 | } | |
6197 | } | |
6198 | ||
6199 | port->tx_ring_size = MVPP2_MAX_TXD; | |
6200 | port->rx_ring_size = MVPP2_MAX_RXD; | |
6201 | port->dev = dev; | |
6202 | SET_NETDEV_DEV(dev, &pdev->dev); | |
6203 | ||
6204 | err = mvpp2_port_init(port); | |
6205 | if (err < 0) { | |
6206 | dev_err(&pdev->dev, "failed to init port %d\n", id); | |
6207 | goto err_free_stats; | |
6208 | } | |
6209 | mvpp2_port_power_up(port); | |
6210 | ||
edc660fa MW |
6211 | port->pcpu = alloc_percpu(struct mvpp2_port_pcpu); |
6212 | if (!port->pcpu) { | |
6213 | err = -ENOMEM; | |
6214 | goto err_free_txq_pcpu; | |
6215 | } | |
6216 | ||
6217 | for_each_present_cpu(cpu) { | |
6218 | port_pcpu = per_cpu_ptr(port->pcpu, cpu); | |
6219 | ||
6220 | hrtimer_init(&port_pcpu->tx_done_timer, CLOCK_MONOTONIC, | |
6221 | HRTIMER_MODE_REL_PINNED); | |
6222 | port_pcpu->tx_done_timer.function = mvpp2_hr_timer_cb; | |
6223 | port_pcpu->timer_scheduled = false; | |
6224 | ||
6225 | tasklet_init(&port_pcpu->tx_done_tasklet, mvpp2_tx_proc_cb, | |
6226 | (unsigned long)dev); | |
6227 | } | |
6228 | ||
3f518509 MW |
6229 | netif_napi_add(dev, &port->napi, mvpp2_poll, NAPI_POLL_WEIGHT); |
6230 | features = NETIF_F_SG | NETIF_F_IP_CSUM; | |
6231 | dev->features = features | NETIF_F_RXCSUM; | |
6232 | dev->hw_features |= features | NETIF_F_RXCSUM | NETIF_F_GRO; | |
6233 | dev->vlan_features |= features; | |
6234 | ||
6235 | err = register_netdev(dev); | |
6236 | if (err < 0) { | |
6237 | dev_err(&pdev->dev, "failed to register netdev\n"); | |
edc660fa | 6238 | goto err_free_port_pcpu; |
3f518509 MW |
6239 | } |
6240 | netdev_info(dev, "Using %s mac address %pM\n", mac_from, dev->dev_addr); | |
6241 | ||
6242 | /* Increment the first Rx queue number to be used by the next port */ | |
6243 | *next_first_rxq += rxq_number; | |
6244 | priv->port_list[id] = port; | |
6245 | return 0; | |
6246 | ||
edc660fa MW |
6247 | err_free_port_pcpu: |
6248 | free_percpu(port->pcpu); | |
3f518509 MW |
6249 | err_free_txq_pcpu: |
6250 | for (i = 0; i < txq_number; i++) | |
6251 | free_percpu(port->txqs[i]->pcpu); | |
6252 | err_free_stats: | |
6253 | free_percpu(port->stats); | |
6254 | err_free_irq: | |
6255 | irq_dispose_mapping(port->irq); | |
6256 | err_free_netdev: | |
6257 | free_netdev(dev); | |
6258 | return err; | |
6259 | } | |
6260 | ||
6261 | /* Ports removal routine */ | |
6262 | static void mvpp2_port_remove(struct mvpp2_port *port) | |
6263 | { | |
6264 | int i; | |
6265 | ||
6266 | unregister_netdev(port->dev); | |
edc660fa | 6267 | free_percpu(port->pcpu); |
3f518509 MW |
6268 | free_percpu(port->stats); |
6269 | for (i = 0; i < txq_number; i++) | |
6270 | free_percpu(port->txqs[i]->pcpu); | |
6271 | irq_dispose_mapping(port->irq); | |
6272 | free_netdev(port->dev); | |
6273 | } | |
6274 | ||
6275 | /* Initialize decoding windows */ | |
6276 | static void mvpp2_conf_mbus_windows(const struct mbus_dram_target_info *dram, | |
6277 | struct mvpp2 *priv) | |
6278 | { | |
6279 | u32 win_enable; | |
6280 | int i; | |
6281 | ||
6282 | for (i = 0; i < 6; i++) { | |
6283 | mvpp2_write(priv, MVPP2_WIN_BASE(i), 0); | |
6284 | mvpp2_write(priv, MVPP2_WIN_SIZE(i), 0); | |
6285 | ||
6286 | if (i < 4) | |
6287 | mvpp2_write(priv, MVPP2_WIN_REMAP(i), 0); | |
6288 | } | |
6289 | ||
6290 | win_enable = 0; | |
6291 | ||
6292 | for (i = 0; i < dram->num_cs; i++) { | |
6293 | const struct mbus_dram_window *cs = dram->cs + i; | |
6294 | ||
6295 | mvpp2_write(priv, MVPP2_WIN_BASE(i), | |
6296 | (cs->base & 0xffff0000) | (cs->mbus_attr << 8) | | |
6297 | dram->mbus_dram_target_id); | |
6298 | ||
6299 | mvpp2_write(priv, MVPP2_WIN_SIZE(i), | |
6300 | (cs->size - 1) & 0xffff0000); | |
6301 | ||
6302 | win_enable |= (1 << i); | |
6303 | } | |
6304 | ||
6305 | mvpp2_write(priv, MVPP2_BASE_ADDR_ENABLE, win_enable); | |
6306 | } | |
6307 | ||
6308 | /* Initialize Rx FIFO's */ | |
6309 | static void mvpp2_rx_fifo_init(struct mvpp2 *priv) | |
6310 | { | |
6311 | int port; | |
6312 | ||
6313 | for (port = 0; port < MVPP2_MAX_PORTS; port++) { | |
6314 | mvpp2_write(priv, MVPP2_RX_DATA_FIFO_SIZE_REG(port), | |
6315 | MVPP2_RX_FIFO_PORT_DATA_SIZE); | |
6316 | mvpp2_write(priv, MVPP2_RX_ATTR_FIFO_SIZE_REG(port), | |
6317 | MVPP2_RX_FIFO_PORT_ATTR_SIZE); | |
6318 | } | |
6319 | ||
6320 | mvpp2_write(priv, MVPP2_RX_MIN_PKT_SIZE_REG, | |
6321 | MVPP2_RX_FIFO_PORT_MIN_PKT); | |
6322 | mvpp2_write(priv, MVPP2_RX_FIFO_INIT_REG, 0x1); | |
6323 | } | |
6324 | ||
6325 | /* Initialize network controller common part HW */ | |
6326 | static int mvpp2_init(struct platform_device *pdev, struct mvpp2 *priv) | |
6327 | { | |
6328 | const struct mbus_dram_target_info *dram_target_info; | |
6329 | int err, i; | |
08a23755 | 6330 | u32 val; |
3f518509 MW |
6331 | |
6332 | /* Checks for hardware constraints */ | |
6333 | if (rxq_number % 4 || (rxq_number > MVPP2_MAX_RXQ) || | |
6334 | (txq_number > MVPP2_MAX_TXQ)) { | |
6335 | dev_err(&pdev->dev, "invalid queue size parameter\n"); | |
6336 | return -EINVAL; | |
6337 | } | |
6338 | ||
6339 | /* MBUS windows configuration */ | |
6340 | dram_target_info = mv_mbus_dram_info(); | |
6341 | if (dram_target_info) | |
6342 | mvpp2_conf_mbus_windows(dram_target_info, priv); | |
6343 | ||
08a23755 MW |
6344 | /* Disable HW PHY polling */ |
6345 | val = readl(priv->lms_base + MVPP2_PHY_AN_CFG0_REG); | |
6346 | val |= MVPP2_PHY_AN_STOP_SMI0_MASK; | |
6347 | writel(val, priv->lms_base + MVPP2_PHY_AN_CFG0_REG); | |
6348 | ||
3f518509 MW |
6349 | /* Allocate and initialize aggregated TXQs */ |
6350 | priv->aggr_txqs = devm_kcalloc(&pdev->dev, num_present_cpus(), | |
6351 | sizeof(struct mvpp2_tx_queue), | |
6352 | GFP_KERNEL); | |
6353 | if (!priv->aggr_txqs) | |
6354 | return -ENOMEM; | |
6355 | ||
6356 | for_each_present_cpu(i) { | |
6357 | priv->aggr_txqs[i].id = i; | |
6358 | priv->aggr_txqs[i].size = MVPP2_AGGR_TXQ_SIZE; | |
6359 | err = mvpp2_aggr_txq_init(pdev, &priv->aggr_txqs[i], | |
6360 | MVPP2_AGGR_TXQ_SIZE, i, priv); | |
6361 | if (err < 0) | |
6362 | return err; | |
6363 | } | |
6364 | ||
6365 | /* Rx Fifo Init */ | |
6366 | mvpp2_rx_fifo_init(priv); | |
6367 | ||
6368 | /* Reset Rx queue group interrupt configuration */ | |
6369 | for (i = 0; i < MVPP2_MAX_PORTS; i++) | |
6370 | mvpp2_write(priv, MVPP2_ISR_RXQ_GROUP_REG(i), rxq_number); | |
6371 | ||
6372 | writel(MVPP2_EXT_GLOBAL_CTRL_DEFAULT, | |
6373 | priv->lms_base + MVPP2_MNG_EXTENDED_GLOBAL_CTRL_REG); | |
6374 | ||
6375 | /* Allow cache snoop when transmiting packets */ | |
6376 | mvpp2_write(priv, MVPP2_TX_SNOOP_REG, 0x1); | |
6377 | ||
6378 | /* Buffer Manager initialization */ | |
6379 | err = mvpp2_bm_init(pdev, priv); | |
6380 | if (err < 0) | |
6381 | return err; | |
6382 | ||
6383 | /* Parser default initialization */ | |
6384 | err = mvpp2_prs_default_init(pdev, priv); | |
6385 | if (err < 0) | |
6386 | return err; | |
6387 | ||
6388 | /* Classifier default initialization */ | |
6389 | mvpp2_cls_init(priv); | |
6390 | ||
6391 | return 0; | |
6392 | } | |
6393 | ||
6394 | static int mvpp2_probe(struct platform_device *pdev) | |
6395 | { | |
6396 | struct device_node *dn = pdev->dev.of_node; | |
6397 | struct device_node *port_node; | |
6398 | struct mvpp2 *priv; | |
6399 | struct resource *res; | |
6400 | int port_count, first_rxq; | |
6401 | int err; | |
6402 | ||
6403 | priv = devm_kzalloc(&pdev->dev, sizeof(struct mvpp2), GFP_KERNEL); | |
6404 | if (!priv) | |
6405 | return -ENOMEM; | |
6406 | ||
6407 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
6408 | priv->base = devm_ioremap_resource(&pdev->dev, res); | |
6409 | if (IS_ERR(priv->base)) | |
6410 | return PTR_ERR(priv->base); | |
6411 | ||
6412 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
6413 | priv->lms_base = devm_ioremap_resource(&pdev->dev, res); | |
6414 | if (IS_ERR(priv->lms_base)) | |
6415 | return PTR_ERR(priv->lms_base); | |
6416 | ||
6417 | priv->pp_clk = devm_clk_get(&pdev->dev, "pp_clk"); | |
6418 | if (IS_ERR(priv->pp_clk)) | |
6419 | return PTR_ERR(priv->pp_clk); | |
6420 | err = clk_prepare_enable(priv->pp_clk); | |
6421 | if (err < 0) | |
6422 | return err; | |
6423 | ||
6424 | priv->gop_clk = devm_clk_get(&pdev->dev, "gop_clk"); | |
6425 | if (IS_ERR(priv->gop_clk)) { | |
6426 | err = PTR_ERR(priv->gop_clk); | |
6427 | goto err_pp_clk; | |
6428 | } | |
6429 | err = clk_prepare_enable(priv->gop_clk); | |
6430 | if (err < 0) | |
6431 | goto err_pp_clk; | |
6432 | ||
6433 | /* Get system's tclk rate */ | |
6434 | priv->tclk = clk_get_rate(priv->pp_clk); | |
6435 | ||
6436 | /* Initialize network controller */ | |
6437 | err = mvpp2_init(pdev, priv); | |
6438 | if (err < 0) { | |
6439 | dev_err(&pdev->dev, "failed to initialize controller\n"); | |
6440 | goto err_gop_clk; | |
6441 | } | |
6442 | ||
6443 | port_count = of_get_available_child_count(dn); | |
6444 | if (port_count == 0) { | |
6445 | dev_err(&pdev->dev, "no ports enabled\n"); | |
575a1935 | 6446 | err = -ENODEV; |
3f518509 MW |
6447 | goto err_gop_clk; |
6448 | } | |
6449 | ||
6450 | priv->port_list = devm_kcalloc(&pdev->dev, port_count, | |
6451 | sizeof(struct mvpp2_port *), | |
6452 | GFP_KERNEL); | |
6453 | if (!priv->port_list) { | |
6454 | err = -ENOMEM; | |
6455 | goto err_gop_clk; | |
6456 | } | |
6457 | ||
6458 | /* Initialize ports */ | |
6459 | first_rxq = 0; | |
6460 | for_each_available_child_of_node(dn, port_node) { | |
6461 | err = mvpp2_port_probe(pdev, port_node, priv, &first_rxq); | |
6462 | if (err < 0) | |
6463 | goto err_gop_clk; | |
6464 | } | |
6465 | ||
6466 | platform_set_drvdata(pdev, priv); | |
6467 | return 0; | |
6468 | ||
6469 | err_gop_clk: | |
6470 | clk_disable_unprepare(priv->gop_clk); | |
6471 | err_pp_clk: | |
6472 | clk_disable_unprepare(priv->pp_clk); | |
6473 | return err; | |
6474 | } | |
6475 | ||
6476 | static int mvpp2_remove(struct platform_device *pdev) | |
6477 | { | |
6478 | struct mvpp2 *priv = platform_get_drvdata(pdev); | |
6479 | struct device_node *dn = pdev->dev.of_node; | |
6480 | struct device_node *port_node; | |
6481 | int i = 0; | |
6482 | ||
6483 | for_each_available_child_of_node(dn, port_node) { | |
6484 | if (priv->port_list[i]) | |
6485 | mvpp2_port_remove(priv->port_list[i]); | |
6486 | i++; | |
6487 | } | |
6488 | ||
6489 | for (i = 0; i < MVPP2_BM_POOLS_NUM; i++) { | |
6490 | struct mvpp2_bm_pool *bm_pool = &priv->bm_pools[i]; | |
6491 | ||
6492 | mvpp2_bm_pool_destroy(pdev, priv, bm_pool); | |
6493 | } | |
6494 | ||
6495 | for_each_present_cpu(i) { | |
6496 | struct mvpp2_tx_queue *aggr_txq = &priv->aggr_txqs[i]; | |
6497 | ||
6498 | dma_free_coherent(&pdev->dev, | |
6499 | MVPP2_AGGR_TXQ_SIZE * MVPP2_DESC_ALIGNED_SIZE, | |
6500 | aggr_txq->descs, | |
6501 | aggr_txq->descs_phys); | |
6502 | } | |
6503 | ||
6504 | clk_disable_unprepare(priv->pp_clk); | |
6505 | clk_disable_unprepare(priv->gop_clk); | |
6506 | ||
6507 | return 0; | |
6508 | } | |
6509 | ||
6510 | static const struct of_device_id mvpp2_match[] = { | |
6511 | { .compatible = "marvell,armada-375-pp2" }, | |
6512 | { } | |
6513 | }; | |
6514 | MODULE_DEVICE_TABLE(of, mvpp2_match); | |
6515 | ||
6516 | static struct platform_driver mvpp2_driver = { | |
6517 | .probe = mvpp2_probe, | |
6518 | .remove = mvpp2_remove, | |
6519 | .driver = { | |
6520 | .name = MVPP2_DRIVER_NAME, | |
6521 | .of_match_table = mvpp2_match, | |
6522 | }, | |
6523 | }; | |
6524 | ||
6525 | module_platform_driver(mvpp2_driver); | |
6526 | ||
6527 | MODULE_DESCRIPTION("Marvell PPv2 Ethernet Driver - www.marvell.com"); | |
6528 | MODULE_AUTHOR("Marcin Wojtas <mw@semihalf.com>"); | |
c634099d | 6529 | MODULE_LICENSE("GPL v2"); |