Commit | Line | Data |
---|---|---|
20f733e7 BR |
1 | /* |
2 | * sata_mv.c - Marvell SATA support | |
3 | * | |
40f21b11 | 4 | * Copyright 2008-2009: Marvell Corporation, all rights reserved. |
8b260248 | 5 | * Copyright 2005: EMC Corporation, all rights reserved. |
e2b1be56 | 6 | * Copyright 2005 Red Hat, Inc. All rights reserved. |
20f733e7 | 7 | * |
40f21b11 ML |
8 | * Originally written by Brett Russ. |
9 | * Extensive overhaul and enhancement by Mark Lord <mlord@pobox.com>. | |
10 | * | |
20f733e7 BR |
11 | * Please ALWAYS copy linux-ide@vger.kernel.org on emails. |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; version 2 of the License. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | * | |
26 | */ | |
27 | ||
4a05e209 | 28 | /* |
85afb934 ML |
29 | * sata_mv TODO list: |
30 | * | |
85afb934 ML |
31 | * --> Develop a low-power-consumption strategy, and implement it. |
32 | * | |
2b748a0a | 33 | * --> Add sysfs attributes for per-chip / per-HC IRQ coalescing thresholds. |
85afb934 ML |
34 | * |
35 | * --> [Experiment, Marvell value added] Is it possible to use target | |
36 | * mode to cross-connect two Linux boxes with Marvell cards? If so, | |
37 | * creating LibATA target mode support would be very interesting. | |
38 | * | |
39 | * Target mode, for those without docs, is the ability to directly | |
40 | * connect two SATA ports. | |
41 | */ | |
4a05e209 | 42 | |
65ad7fef ML |
43 | /* |
44 | * 80x1-B2 errata PCI#11: | |
45 | * | |
46 | * Users of the 6041/6081 Rev.B2 chips (current is C0) | |
47 | * should be careful to insert those cards only onto PCI-X bus #0, | |
48 | * and only in device slots 0..7, not higher. The chips may not | |
49 | * work correctly otherwise (note: this is a pretty rare condition). | |
50 | */ | |
51 | ||
20f733e7 BR |
52 | #include <linux/kernel.h> |
53 | #include <linux/module.h> | |
54 | #include <linux/pci.h> | |
55 | #include <linux/init.h> | |
56 | #include <linux/blkdev.h> | |
57 | #include <linux/delay.h> | |
58 | #include <linux/interrupt.h> | |
8d8b6004 | 59 | #include <linux/dmapool.h> |
20f733e7 | 60 | #include <linux/dma-mapping.h> |
a9524a76 | 61 | #include <linux/device.h> |
c77a2f4e | 62 | #include <linux/clk.h> |
b7db4f2e | 63 | #include <linux/phy/phy.h> |
f351b2d6 SB |
64 | #include <linux/platform_device.h> |
65 | #include <linux/ata_platform.h> | |
15a32632 | 66 | #include <linux/mbus.h> |
c46938cc | 67 | #include <linux/bitops.h> |
5a0e3ad6 | 68 | #include <linux/gfp.h> |
97b414e1 AL |
69 | #include <linux/of.h> |
70 | #include <linux/of_irq.h> | |
20f733e7 | 71 | #include <scsi/scsi_host.h> |
193515d5 | 72 | #include <scsi/scsi_cmnd.h> |
6c08772e | 73 | #include <scsi/scsi_device.h> |
20f733e7 | 74 | #include <linux/libata.h> |
20f733e7 BR |
75 | |
76 | #define DRV_NAME "sata_mv" | |
cae5a29d | 77 | #define DRV_VERSION "1.28" |
20f733e7 | 78 | |
40f21b11 ML |
79 | /* |
80 | * module options | |
81 | */ | |
82 | ||
40f21b11 | 83 | #ifdef CONFIG_PCI |
13b74085 | 84 | static int msi; |
40f21b11 ML |
85 | module_param(msi, int, S_IRUGO); |
86 | MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)"); | |
87 | #endif | |
88 | ||
2b748a0a ML |
89 | static int irq_coalescing_io_count; |
90 | module_param(irq_coalescing_io_count, int, S_IRUGO); | |
91 | MODULE_PARM_DESC(irq_coalescing_io_count, | |
92 | "IRQ coalescing I/O count threshold (0..255)"); | |
93 | ||
94 | static int irq_coalescing_usecs; | |
95 | module_param(irq_coalescing_usecs, int, S_IRUGO); | |
96 | MODULE_PARM_DESC(irq_coalescing_usecs, | |
97 | "IRQ coalescing time threshold in usecs"); | |
98 | ||
20f733e7 BR |
99 | enum { |
100 | /* BAR's are enumerated in terms of pci_resource_start() terms */ | |
101 | MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */ | |
102 | MV_IO_BAR = 2, /* offset 0x18: IO space */ | |
103 | MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */ | |
104 | ||
105 | MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */ | |
106 | MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */ | |
107 | ||
2b748a0a ML |
108 | /* For use with both IRQ coalescing methods ("all ports" or "per-HC" */ |
109 | COAL_CLOCKS_PER_USEC = 150, /* for calculating COAL_TIMEs */ | |
110 | MAX_COAL_TIME_THRESHOLD = ((1 << 24) - 1), /* internal clocks count */ | |
111 | MAX_COAL_IO_COUNT = 255, /* completed I/O count */ | |
112 | ||
20f733e7 | 113 | MV_PCI_REG_BASE = 0, |
615ab953 | 114 | |
2b748a0a ML |
115 | /* |
116 | * Per-chip ("all ports") interrupt coalescing feature. | |
117 | * This is only for GEN_II / GEN_IIE hardware. | |
118 | * | |
119 | * Coalescing defers the interrupt until either the IO_THRESHOLD | |
120 | * (count of completed I/Os) is met, or the TIME_THRESHOLD is met. | |
121 | */ | |
cae5a29d ML |
122 | COAL_REG_BASE = 0x18000, |
123 | IRQ_COAL_CAUSE = (COAL_REG_BASE + 0x08), | |
2b748a0a ML |
124 | ALL_PORTS_COAL_IRQ = (1 << 4), /* all ports irq event */ |
125 | ||
cae5a29d ML |
126 | IRQ_COAL_IO_THRESHOLD = (COAL_REG_BASE + 0xcc), |
127 | IRQ_COAL_TIME_THRESHOLD = (COAL_REG_BASE + 0xd0), | |
2b748a0a ML |
128 | |
129 | /* | |
130 | * Registers for the (unused here) transaction coalescing feature: | |
131 | */ | |
cae5a29d ML |
132 | TRAN_COAL_CAUSE_LO = (COAL_REG_BASE + 0x88), |
133 | TRAN_COAL_CAUSE_HI = (COAL_REG_BASE + 0x8c), | |
2b748a0a | 134 | |
cae5a29d ML |
135 | SATAHC0_REG_BASE = 0x20000, |
136 | FLASH_CTL = 0x1046c, | |
137 | GPIO_PORT_CTL = 0x104f0, | |
138 | RESET_CFG = 0x180d8, | |
20f733e7 BR |
139 | |
140 | MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ, | |
141 | MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ, | |
142 | MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */ | |
143 | MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ, | |
144 | ||
31961943 BR |
145 | MV_MAX_Q_DEPTH = 32, |
146 | MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1, | |
147 | ||
148 | /* CRQB needs alignment on a 1KB boundary. Size == 1KB | |
149 | * CRPB needs alignment on a 256B boundary. Size == 256B | |
31961943 BR |
150 | * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B |
151 | */ | |
152 | MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH), | |
153 | MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH), | |
da2fa9ba | 154 | MV_MAX_SG_CT = 256, |
31961943 | 155 | MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT), |
31961943 | 156 | |
352fab70 | 157 | /* Determine hc from 0-7 port: hc = port >> MV_PORT_HC_SHIFT */ |
20f733e7 | 158 | MV_PORT_HC_SHIFT = 2, |
352fab70 ML |
159 | MV_PORTS_PER_HC = (1 << MV_PORT_HC_SHIFT), /* 4 */ |
160 | /* Determine hc port from 0-7 port: hardport = port & MV_PORT_MASK */ | |
161 | MV_PORT_MASK = (MV_PORTS_PER_HC - 1), /* 3 */ | |
20f733e7 BR |
162 | |
163 | /* Host Flags */ | |
164 | MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */ | |
7bb3c529 | 165 | |
9cbe056f | 166 | MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_PIO_POLLING, |
ad3aef51 | 167 | |
91b1a84c | 168 | MV_GEN_I_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NO_ATAPI, |
20f733e7 | 169 | |
40f21b11 ML |
170 | MV_GEN_II_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NCQ | |
171 | ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA, | |
91b1a84c ML |
172 | |
173 | MV_GEN_IIE_FLAGS = MV_GEN_II_FLAGS | ATA_FLAG_AN, | |
ad3aef51 | 174 | |
31961943 BR |
175 | CRQB_FLAG_READ = (1 << 0), |
176 | CRQB_TAG_SHIFT = 1, | |
c5d3e45a | 177 | CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */ |
e12bef50 | 178 | CRQB_PMP_SHIFT = 12, /* CRQB Gen-II/IIE PMP shift */ |
c5d3e45a | 179 | CRQB_HOSTQ_SHIFT = 17, /* CRQB Gen-II/IIE HostQueTag shift */ |
31961943 BR |
180 | CRQB_CMD_ADDR_SHIFT = 8, |
181 | CRQB_CMD_CS = (0x2 << 11), | |
182 | CRQB_CMD_LAST = (1 << 15), | |
183 | ||
184 | CRPB_FLAG_STATUS_SHIFT = 8, | |
c5d3e45a JG |
185 | CRPB_IOID_SHIFT_6 = 5, /* CRPB Gen-II IO Id shift */ |
186 | CRPB_IOID_SHIFT_7 = 7, /* CRPB Gen-IIE IO Id shift */ | |
31961943 BR |
187 | |
188 | EPRD_FLAG_END_OF_TBL = (1 << 31), | |
189 | ||
20f733e7 BR |
190 | /* PCI interface registers */ |
191 | ||
cae5a29d ML |
192 | MV_PCI_COMMAND = 0xc00, |
193 | MV_PCI_COMMAND_MWRCOM = (1 << 4), /* PCI Master Write Combining */ | |
194 | MV_PCI_COMMAND_MRDTRIG = (1 << 7), /* PCI Master Read Trigger */ | |
31961943 | 195 | |
cae5a29d | 196 | PCI_MAIN_CMD_STS = 0xd30, |
20f733e7 BR |
197 | STOP_PCI_MASTER = (1 << 2), |
198 | PCI_MASTER_EMPTY = (1 << 3), | |
199 | GLOB_SFT_RST = (1 << 4), | |
200 | ||
cae5a29d | 201 | MV_PCI_MODE = 0xd00, |
8e7decdb ML |
202 | MV_PCI_MODE_MASK = 0x30, |
203 | ||
522479fb JG |
204 | MV_PCI_EXP_ROM_BAR_CTL = 0xd2c, |
205 | MV_PCI_DISC_TIMER = 0xd04, | |
206 | MV_PCI_MSI_TRIGGER = 0xc38, | |
207 | MV_PCI_SERR_MASK = 0xc28, | |
cae5a29d | 208 | MV_PCI_XBAR_TMOUT = 0x1d04, |
522479fb JG |
209 | MV_PCI_ERR_LOW_ADDRESS = 0x1d40, |
210 | MV_PCI_ERR_HIGH_ADDRESS = 0x1d44, | |
211 | MV_PCI_ERR_ATTRIBUTE = 0x1d48, | |
212 | MV_PCI_ERR_COMMAND = 0x1d50, | |
213 | ||
cae5a29d ML |
214 | PCI_IRQ_CAUSE = 0x1d58, |
215 | PCI_IRQ_MASK = 0x1d5c, | |
20f733e7 BR |
216 | PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */ |
217 | ||
cae5a29d ML |
218 | PCIE_IRQ_CAUSE = 0x1900, |
219 | PCIE_IRQ_MASK = 0x1910, | |
646a4da5 | 220 | PCIE_UNMASK_ALL_IRQS = 0x40a, /* assorted bits */ |
02a121da | 221 | |
7368f919 | 222 | /* Host Controller Main Interrupt Cause/Mask registers (1 per-chip) */ |
cae5a29d ML |
223 | PCI_HC_MAIN_IRQ_CAUSE = 0x1d60, |
224 | PCI_HC_MAIN_IRQ_MASK = 0x1d64, | |
225 | SOC_HC_MAIN_IRQ_CAUSE = 0x20020, | |
226 | SOC_HC_MAIN_IRQ_MASK = 0x20024, | |
40f21b11 ML |
227 | ERR_IRQ = (1 << 0), /* shift by (2 * port #) */ |
228 | DONE_IRQ = (1 << 1), /* shift by (2 * port #) */ | |
20f733e7 BR |
229 | HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */ |
230 | HC_SHIFT = 9, /* bits 9-17 = HC1's ports */ | |
2b748a0a ML |
231 | DONE_IRQ_0_3 = 0x000000aa, /* DONE_IRQ ports 0,1,2,3 */ |
232 | DONE_IRQ_4_7 = (DONE_IRQ_0_3 << HC_SHIFT), /* 4,5,6,7 */ | |
20f733e7 | 233 | PCI_ERR = (1 << 18), |
40f21b11 ML |
234 | TRAN_COAL_LO_DONE = (1 << 19), /* transaction coalescing */ |
235 | TRAN_COAL_HI_DONE = (1 << 20), /* transaction coalescing */ | |
236 | PORTS_0_3_COAL_DONE = (1 << 8), /* HC0 IRQ coalescing */ | |
237 | PORTS_4_7_COAL_DONE = (1 << 17), /* HC1 IRQ coalescing */ | |
238 | ALL_PORTS_COAL_DONE = (1 << 21), /* GEN_II(E) IRQ coalescing */ | |
20f733e7 BR |
239 | GPIO_INT = (1 << 22), |
240 | SELF_INT = (1 << 23), | |
241 | TWSI_INT = (1 << 24), | |
242 | HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */ | |
fb621e2f | 243 | HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */ |
e12bef50 | 244 | HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */ |
20f733e7 BR |
245 | |
246 | /* SATAHC registers */ | |
cae5a29d | 247 | HC_CFG = 0x00, |
20f733e7 | 248 | |
cae5a29d | 249 | HC_IRQ_CAUSE = 0x14, |
352fab70 ML |
250 | DMA_IRQ = (1 << 0), /* shift by port # */ |
251 | HC_COAL_IRQ = (1 << 4), /* IRQ coalescing */ | |
20f733e7 BR |
252 | DEV_IRQ = (1 << 8), /* shift by port # */ |
253 | ||
2b748a0a ML |
254 | /* |
255 | * Per-HC (Host-Controller) interrupt coalescing feature. | |
256 | * This is present on all chip generations. | |
257 | * | |
258 | * Coalescing defers the interrupt until either the IO_THRESHOLD | |
259 | * (count of completed I/Os) is met, or the TIME_THRESHOLD is met. | |
260 | */ | |
cae5a29d ML |
261 | HC_IRQ_COAL_IO_THRESHOLD = 0x000c, |
262 | HC_IRQ_COAL_TIME_THRESHOLD = 0x0010, | |
2b748a0a | 263 | |
cae5a29d | 264 | SOC_LED_CTRL = 0x2c, |
000b344f ML |
265 | SOC_LED_CTRL_BLINK = (1 << 0), /* Active LED blink */ |
266 | SOC_LED_CTRL_ACT_PRESENCE = (1 << 2), /* Multiplex dev presence */ | |
267 | /* with dev activity LED */ | |
268 | ||
20f733e7 | 269 | /* Shadow block registers */ |
cae5a29d ML |
270 | SHD_BLK = 0x100, |
271 | SHD_CTL_AST = 0x20, /* ofs from SHD_BLK */ | |
20f733e7 BR |
272 | |
273 | /* SATA registers */ | |
cae5a29d ML |
274 | SATA_STATUS = 0x300, /* ctrl, err regs follow status */ |
275 | SATA_ACTIVE = 0x350, | |
276 | FIS_IRQ_CAUSE = 0x364, | |
277 | FIS_IRQ_CAUSE_AN = (1 << 9), /* async notification */ | |
17c5aab5 | 278 | |
cae5a29d | 279 | LTMODE = 0x30c, /* requires read-after-write */ |
17c5aab5 ML |
280 | LTMODE_BIT8 = (1 << 8), /* unknown, but necessary */ |
281 | ||
cae5a29d | 282 | PHY_MODE2 = 0x330, |
47c2b677 | 283 | PHY_MODE3 = 0x310, |
cae5a29d ML |
284 | |
285 | PHY_MODE4 = 0x314, /* requires read-after-write */ | |
ba069e37 ML |
286 | PHY_MODE4_CFG_MASK = 0x00000003, /* phy internal config field */ |
287 | PHY_MODE4_CFG_VALUE = 0x00000001, /* phy internal config field */ | |
288 | PHY_MODE4_RSVD_ZEROS = 0x5de3fffa, /* Gen2e always write zeros */ | |
289 | PHY_MODE4_RSVD_ONES = 0x00000005, /* Gen2e always write ones */ | |
290 | ||
cae5a29d ML |
291 | SATA_IFCTL = 0x344, |
292 | SATA_TESTCTL = 0x348, | |
293 | SATA_IFSTAT = 0x34c, | |
294 | VENDOR_UNIQUE_FIS = 0x35c, | |
17c5aab5 | 295 | |
cae5a29d | 296 | FISCFG = 0x360, |
8e7decdb ML |
297 | FISCFG_WAIT_DEV_ERR = (1 << 8), /* wait for host on DevErr */ |
298 | FISCFG_SINGLE_SYNC = (1 << 16), /* SYNC on DMA activation */ | |
17c5aab5 | 299 | |
29b7e43c MM |
300 | PHY_MODE9_GEN2 = 0x398, |
301 | PHY_MODE9_GEN1 = 0x39c, | |
302 | PHYCFG_OFS = 0x3a0, /* only in 65n devices */ | |
303 | ||
c9d39130 | 304 | MV5_PHY_MODE = 0x74, |
cae5a29d ML |
305 | MV5_LTMODE = 0x30, |
306 | MV5_PHY_CTL = 0x0C, | |
307 | SATA_IFCFG = 0x050, | |
9013d64e | 308 | LP_PHY_CTL = 0x058, |
3661aa99 TP |
309 | LP_PHY_CTL_PIN_PU_PLL = (1 << 0), |
310 | LP_PHY_CTL_PIN_PU_RX = (1 << 1), | |
311 | LP_PHY_CTL_PIN_PU_TX = (1 << 2), | |
312 | LP_PHY_CTL_GEN_TX_3G = (1 << 5), | |
313 | LP_PHY_CTL_GEN_RX_3G = (1 << 9), | |
bca1c4eb JG |
314 | |
315 | MV_M2_PREAMP_MASK = 0x7e0, | |
20f733e7 BR |
316 | |
317 | /* Port registers */ | |
cae5a29d | 318 | EDMA_CFG = 0, |
0c58912e ML |
319 | EDMA_CFG_Q_DEPTH = 0x1f, /* max device queue depth */ |
320 | EDMA_CFG_NCQ = (1 << 5), /* for R/W FPDMA queued */ | |
321 | EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */ | |
322 | EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */ | |
323 | EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */ | |
e12bef50 ML |
324 | EDMA_CFG_EDMA_FBS = (1 << 16), /* EDMA FIS-Based Switching */ |
325 | EDMA_CFG_FBS = (1 << 26), /* FIS-Based Switching */ | |
20f733e7 | 326 | |
cae5a29d ML |
327 | EDMA_ERR_IRQ_CAUSE = 0x8, |
328 | EDMA_ERR_IRQ_MASK = 0xc, | |
6c1153e0 JG |
329 | EDMA_ERR_D_PAR = (1 << 0), /* UDMA data parity err */ |
330 | EDMA_ERR_PRD_PAR = (1 << 1), /* UDMA PRD parity err */ | |
331 | EDMA_ERR_DEV = (1 << 2), /* device error */ | |
332 | EDMA_ERR_DEV_DCON = (1 << 3), /* device disconnect */ | |
333 | EDMA_ERR_DEV_CON = (1 << 4), /* device connected */ | |
334 | EDMA_ERR_SERR = (1 << 5), /* SError bits [WBDST] raised */ | |
c5d3e45a JG |
335 | EDMA_ERR_SELF_DIS = (1 << 7), /* Gen II/IIE self-disable */ |
336 | EDMA_ERR_SELF_DIS_5 = (1 << 8), /* Gen I self-disable */ | |
6c1153e0 | 337 | EDMA_ERR_BIST_ASYNC = (1 << 8), /* BIST FIS or Async Notify */ |
c5d3e45a | 338 | EDMA_ERR_TRANS_IRQ_7 = (1 << 8), /* Gen IIE transprt layer irq */ |
6c1153e0 JG |
339 | EDMA_ERR_CRQB_PAR = (1 << 9), /* CRQB parity error */ |
340 | EDMA_ERR_CRPB_PAR = (1 << 10), /* CRPB parity error */ | |
341 | EDMA_ERR_INTRL_PAR = (1 << 11), /* internal parity error */ | |
342 | EDMA_ERR_IORDY = (1 << 12), /* IORdy timeout */ | |
646a4da5 | 343 | |
6c1153e0 | 344 | EDMA_ERR_LNK_CTRL_RX = (0xf << 13), /* link ctrl rx error */ |
646a4da5 ML |
345 | EDMA_ERR_LNK_CTRL_RX_0 = (1 << 13), /* transient: CRC err */ |
346 | EDMA_ERR_LNK_CTRL_RX_1 = (1 << 14), /* transient: FIFO err */ | |
347 | EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15), /* fatal: caught SYNC */ | |
348 | EDMA_ERR_LNK_CTRL_RX_3 = (1 << 16), /* transient: FIS rx err */ | |
349 | ||
6c1153e0 | 350 | EDMA_ERR_LNK_DATA_RX = (0xf << 17), /* link data rx error */ |
646a4da5 | 351 | |
6c1153e0 | 352 | EDMA_ERR_LNK_CTRL_TX = (0x1f << 21), /* link ctrl tx error */ |
646a4da5 ML |
353 | EDMA_ERR_LNK_CTRL_TX_0 = (1 << 21), /* transient: CRC err */ |
354 | EDMA_ERR_LNK_CTRL_TX_1 = (1 << 22), /* transient: FIFO err */ | |
355 | EDMA_ERR_LNK_CTRL_TX_2 = (1 << 23), /* transient: caught SYNC */ | |
356 | EDMA_ERR_LNK_CTRL_TX_3 = (1 << 24), /* transient: caught DMAT */ | |
357 | EDMA_ERR_LNK_CTRL_TX_4 = (1 << 25), /* transient: FIS collision */ | |
358 | ||
6c1153e0 | 359 | EDMA_ERR_LNK_DATA_TX = (0x1f << 26), /* link data tx error */ |
646a4da5 | 360 | |
6c1153e0 | 361 | EDMA_ERR_TRANS_PROTO = (1 << 31), /* transport protocol error */ |
c5d3e45a JG |
362 | EDMA_ERR_OVERRUN_5 = (1 << 5), |
363 | EDMA_ERR_UNDERRUN_5 = (1 << 6), | |
646a4da5 ML |
364 | |
365 | EDMA_ERR_IRQ_TRANSIENT = EDMA_ERR_LNK_CTRL_RX_0 | | |
366 | EDMA_ERR_LNK_CTRL_RX_1 | | |
367 | EDMA_ERR_LNK_CTRL_RX_3 | | |
85afb934 | 368 | EDMA_ERR_LNK_CTRL_TX, |
646a4da5 | 369 | |
bdd4ddde JG |
370 | EDMA_EH_FREEZE = EDMA_ERR_D_PAR | |
371 | EDMA_ERR_PRD_PAR | | |
372 | EDMA_ERR_DEV_DCON | | |
373 | EDMA_ERR_DEV_CON | | |
374 | EDMA_ERR_SERR | | |
375 | EDMA_ERR_SELF_DIS | | |
6c1153e0 | 376 | EDMA_ERR_CRQB_PAR | |
bdd4ddde JG |
377 | EDMA_ERR_CRPB_PAR | |
378 | EDMA_ERR_INTRL_PAR | | |
379 | EDMA_ERR_IORDY | | |
380 | EDMA_ERR_LNK_CTRL_RX_2 | | |
381 | EDMA_ERR_LNK_DATA_RX | | |
382 | EDMA_ERR_LNK_DATA_TX | | |
383 | EDMA_ERR_TRANS_PROTO, | |
e12bef50 | 384 | |
bdd4ddde JG |
385 | EDMA_EH_FREEZE_5 = EDMA_ERR_D_PAR | |
386 | EDMA_ERR_PRD_PAR | | |
387 | EDMA_ERR_DEV_DCON | | |
388 | EDMA_ERR_DEV_CON | | |
389 | EDMA_ERR_OVERRUN_5 | | |
390 | EDMA_ERR_UNDERRUN_5 | | |
391 | EDMA_ERR_SELF_DIS_5 | | |
6c1153e0 | 392 | EDMA_ERR_CRQB_PAR | |
bdd4ddde JG |
393 | EDMA_ERR_CRPB_PAR | |
394 | EDMA_ERR_INTRL_PAR | | |
395 | EDMA_ERR_IORDY, | |
20f733e7 | 396 | |
cae5a29d ML |
397 | EDMA_REQ_Q_BASE_HI = 0x10, |
398 | EDMA_REQ_Q_IN_PTR = 0x14, /* also contains BASE_LO */ | |
31961943 | 399 | |
cae5a29d | 400 | EDMA_REQ_Q_OUT_PTR = 0x18, |
31961943 BR |
401 | EDMA_REQ_Q_PTR_SHIFT = 5, |
402 | ||
cae5a29d ML |
403 | EDMA_RSP_Q_BASE_HI = 0x1c, |
404 | EDMA_RSP_Q_IN_PTR = 0x20, | |
405 | EDMA_RSP_Q_OUT_PTR = 0x24, /* also contains BASE_LO */ | |
31961943 BR |
406 | EDMA_RSP_Q_PTR_SHIFT = 3, |
407 | ||
cae5a29d | 408 | EDMA_CMD = 0x28, /* EDMA command register */ |
0ea9e179 JG |
409 | EDMA_EN = (1 << 0), /* enable EDMA */ |
410 | EDMA_DS = (1 << 1), /* disable EDMA; self-negated */ | |
8e7decdb ML |
411 | EDMA_RESET = (1 << 2), /* reset eng/trans/link/phy */ |
412 | ||
cae5a29d | 413 | EDMA_STATUS = 0x30, /* EDMA engine status */ |
8e7decdb ML |
414 | EDMA_STATUS_CACHE_EMPTY = (1 << 6), /* GenIIe command cache empty */ |
415 | EDMA_STATUS_IDLE = (1 << 7), /* GenIIe EDMA enabled/idle */ | |
20f733e7 | 416 | |
cae5a29d ML |
417 | EDMA_IORDY_TMOUT = 0x34, |
418 | EDMA_ARB_CFG = 0x38, | |
8e7decdb | 419 | |
cae5a29d ML |
420 | EDMA_HALTCOND = 0x60, /* GenIIe halt conditions */ |
421 | EDMA_UNKNOWN_RSVD = 0x6C, /* GenIIe unknown/reserved */ | |
da14265e | 422 | |
cae5a29d ML |
423 | BMDMA_CMD = 0x224, /* bmdma command register */ |
424 | BMDMA_STATUS = 0x228, /* bmdma status register */ | |
425 | BMDMA_PRD_LOW = 0x22c, /* bmdma PRD addr 31:0 */ | |
426 | BMDMA_PRD_HIGH = 0x230, /* bmdma PRD addr 63:32 */ | |
da14265e | 427 | |
31961943 BR |
428 | /* Host private flags (hp_flags) */ |
429 | MV_HP_FLAG_MSI = (1 << 0), | |
47c2b677 JG |
430 | MV_HP_ERRATA_50XXB0 = (1 << 1), |
431 | MV_HP_ERRATA_50XXB2 = (1 << 2), | |
432 | MV_HP_ERRATA_60X1B2 = (1 << 3), | |
433 | MV_HP_ERRATA_60X1C0 = (1 << 4), | |
0ea9e179 JG |
434 | MV_HP_GEN_I = (1 << 6), /* Generation I: 50xx */ |
435 | MV_HP_GEN_II = (1 << 7), /* Generation II: 60xx */ | |
436 | MV_HP_GEN_IIE = (1 << 8), /* Generation IIE: 6042/7042 */ | |
02a121da | 437 | MV_HP_PCIE = (1 << 9), /* PCIe bus/regs: 7042 */ |
616d4a98 | 438 | MV_HP_CUT_THROUGH = (1 << 10), /* can use EDMA cut-through */ |
1f398472 | 439 | MV_HP_FLAG_SOC = (1 << 11), /* SystemOnChip, no PCI */ |
000b344f | 440 | MV_HP_QUIRK_LED_BLINK_EN = (1 << 12), /* is led blinking enabled? */ |
9013d64e | 441 | MV_HP_FIX_LP_PHY_CTL = (1 << 13), /* fix speed in LP_PHY_CTL ? */ |
20f733e7 | 442 | |
31961943 | 443 | /* Port private flags (pp_flags) */ |
0ea9e179 | 444 | MV_PP_FLAG_EDMA_EN = (1 << 0), /* is EDMA engine enabled? */ |
72109168 | 445 | MV_PP_FLAG_NCQ_EN = (1 << 1), /* is EDMA set up for NCQ? */ |
00f42eab | 446 | MV_PP_FLAG_FBS_EN = (1 << 2), /* is EDMA set up for FBS? */ |
29d187bb | 447 | MV_PP_FLAG_DELAYED_EH = (1 << 3), /* delayed dev err handling */ |
d16ab3f6 | 448 | MV_PP_FLAG_FAKE_ATA_BUSY = (1 << 4), /* ignore initial ATA_DRDY */ |
20f733e7 BR |
449 | }; |
450 | ||
ee9ccdf7 JG |
451 | #define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I) |
452 | #define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II) | |
e4e7b892 | 453 | #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE) |
8e7decdb | 454 | #define IS_PCIE(hpriv) ((hpriv)->hp_flags & MV_HP_PCIE) |
1f398472 | 455 | #define IS_SOC(hpriv) ((hpriv)->hp_flags & MV_HP_FLAG_SOC) |
bca1c4eb | 456 | |
15a32632 LB |
457 | #define WINDOW_CTRL(i) (0x20030 + ((i) << 4)) |
458 | #define WINDOW_BASE(i) (0x20034 + ((i) << 4)) | |
459 | ||
095fec88 | 460 | enum { |
baf14aa1 JG |
461 | /* DMA boundary 0xffff is required by the s/g splitting |
462 | * we need on /length/ in mv_fill-sg(). | |
463 | */ | |
464 | MV_DMA_BOUNDARY = 0xffffU, | |
095fec88 | 465 | |
0ea9e179 JG |
466 | /* mask of register bits containing lower 32 bits |
467 | * of EDMA request queue DMA address | |
468 | */ | |
095fec88 JG |
469 | EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U, |
470 | ||
0ea9e179 | 471 | /* ditto, for response queue */ |
095fec88 JG |
472 | EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U, |
473 | }; | |
474 | ||
522479fb JG |
475 | enum chip_type { |
476 | chip_504x, | |
477 | chip_508x, | |
478 | chip_5080, | |
479 | chip_604x, | |
480 | chip_608x, | |
e4e7b892 JG |
481 | chip_6042, |
482 | chip_7042, | |
f351b2d6 | 483 | chip_soc, |
522479fb JG |
484 | }; |
485 | ||
31961943 BR |
486 | /* Command ReQuest Block: 32B */ |
487 | struct mv_crqb { | |
e1469874 ML |
488 | __le32 sg_addr; |
489 | __le32 sg_addr_hi; | |
490 | __le16 ctrl_flags; | |
491 | __le16 ata_cmd[11]; | |
31961943 | 492 | }; |
20f733e7 | 493 | |
e4e7b892 | 494 | struct mv_crqb_iie { |
e1469874 ML |
495 | __le32 addr; |
496 | __le32 addr_hi; | |
497 | __le32 flags; | |
498 | __le32 len; | |
499 | __le32 ata_cmd[4]; | |
e4e7b892 JG |
500 | }; |
501 | ||
31961943 BR |
502 | /* Command ResPonse Block: 8B */ |
503 | struct mv_crpb { | |
e1469874 ML |
504 | __le16 id; |
505 | __le16 flags; | |
506 | __le32 tmstmp; | |
20f733e7 BR |
507 | }; |
508 | ||
31961943 BR |
509 | /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */ |
510 | struct mv_sg { | |
e1469874 ML |
511 | __le32 addr; |
512 | __le32 flags_size; | |
513 | __le32 addr_hi; | |
514 | __le32 reserved; | |
31961943 | 515 | }; |
20f733e7 | 516 | |
08da1759 ML |
517 | /* |
518 | * We keep a local cache of a few frequently accessed port | |
519 | * registers here, to avoid having to read them (very slow) | |
520 | * when switching between EDMA and non-EDMA modes. | |
521 | */ | |
522 | struct mv_cached_regs { | |
523 | u32 fiscfg; | |
524 | u32 ltmode; | |
525 | u32 haltcond; | |
c01e8a23 | 526 | u32 unknown_rsvd; |
08da1759 ML |
527 | }; |
528 | ||
31961943 BR |
529 | struct mv_port_priv { |
530 | struct mv_crqb *crqb; | |
531 | dma_addr_t crqb_dma; | |
532 | struct mv_crpb *crpb; | |
533 | dma_addr_t crpb_dma; | |
eb73d558 ML |
534 | struct mv_sg *sg_tbl[MV_MAX_Q_DEPTH]; |
535 | dma_addr_t sg_tbl_dma[MV_MAX_Q_DEPTH]; | |
bdd4ddde JG |
536 | |
537 | unsigned int req_idx; | |
538 | unsigned int resp_idx; | |
539 | ||
31961943 | 540 | u32 pp_flags; |
08da1759 | 541 | struct mv_cached_regs cached; |
29d187bb | 542 | unsigned int delayed_eh_pmp_map; |
31961943 BR |
543 | }; |
544 | ||
bca1c4eb JG |
545 | struct mv_port_signal { |
546 | u32 amps; | |
547 | u32 pre; | |
548 | }; | |
549 | ||
02a121da ML |
550 | struct mv_host_priv { |
551 | u32 hp_flags; | |
1bfeff03 | 552 | unsigned int board_idx; |
96e2c487 | 553 | u32 main_irq_mask; |
02a121da ML |
554 | struct mv_port_signal signal[8]; |
555 | const struct mv_hw_ops *ops; | |
f351b2d6 SB |
556 | int n_ports; |
557 | void __iomem *base; | |
7368f919 ML |
558 | void __iomem *main_irq_cause_addr; |
559 | void __iomem *main_irq_mask_addr; | |
cae5a29d ML |
560 | u32 irq_cause_offset; |
561 | u32 irq_mask_offset; | |
02a121da | 562 | u32 unmask_all_irqs; |
c77a2f4e | 563 | |
e0067f0b EG |
564 | /* |
565 | * Needed on some devices that require their clocks to be enabled. | |
566 | * These are optional: if the platform device does not have any | |
567 | * clocks, they won't be used. Also, if the underlying hardware | |
568 | * does not support the common clock framework (CONFIG_HAVE_CLK=n), | |
569 | * all the clock operations become no-ops (see clk.h). | |
570 | */ | |
c77a2f4e | 571 | struct clk *clk; |
eee98990 | 572 | struct clk **port_clks; |
b7db4f2e AL |
573 | /* |
574 | * Some devices have a SATA PHY which can be enabled/disabled | |
575 | * in order to save power. These are optional: if the platform | |
576 | * devices does not have any phy, they won't be used. | |
577 | */ | |
578 | struct phy **port_phys; | |
da2fa9ba ML |
579 | /* |
580 | * These consistent DMA memory pools give us guaranteed | |
581 | * alignment for hardware-accessed data structures, | |
582 | * and less memory waste in accomplishing the alignment. | |
583 | */ | |
584 | struct dma_pool *crqb_pool; | |
585 | struct dma_pool *crpb_pool; | |
586 | struct dma_pool *sg_tbl_pool; | |
02a121da ML |
587 | }; |
588 | ||
47c2b677 | 589 | struct mv_hw_ops { |
2a47ce06 JG |
590 | void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio, |
591 | unsigned int port); | |
47c2b677 JG |
592 | void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio); |
593 | void (*read_preamp)(struct mv_host_priv *hpriv, int idx, | |
594 | void __iomem *mmio); | |
c9d39130 JG |
595 | int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio, |
596 | unsigned int n_hc); | |
522479fb | 597 | void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio); |
7bb3c529 | 598 | void (*reset_bus)(struct ata_host *host, void __iomem *mmio); |
47c2b677 JG |
599 | }; |
600 | ||
82ef04fb TH |
601 | static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val); |
602 | static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val); | |
603 | static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val); | |
604 | static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val); | |
31961943 BR |
605 | static int mv_port_start(struct ata_port *ap); |
606 | static void mv_port_stop(struct ata_port *ap); | |
3e4a1391 | 607 | static int mv_qc_defer(struct ata_queued_cmd *qc); |
31961943 | 608 | static void mv_qc_prep(struct ata_queued_cmd *qc); |
e4e7b892 | 609 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc); |
9a3d9eb0 | 610 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc); |
a1efdaba TH |
611 | static int mv_hardreset(struct ata_link *link, unsigned int *class, |
612 | unsigned long deadline); | |
bdd4ddde JG |
613 | static void mv_eh_freeze(struct ata_port *ap); |
614 | static void mv_eh_thaw(struct ata_port *ap); | |
f273827e | 615 | static void mv6_dev_config(struct ata_device *dev); |
20f733e7 | 616 | |
2a47ce06 JG |
617 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
618 | unsigned int port); | |
47c2b677 JG |
619 | static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); |
620 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, | |
621 | void __iomem *mmio); | |
c9d39130 JG |
622 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
623 | unsigned int n_hc); | |
522479fb | 624 | static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio); |
7bb3c529 | 625 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio); |
47c2b677 | 626 | |
2a47ce06 JG |
627 | static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
628 | unsigned int port); | |
47c2b677 JG |
629 | static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); |
630 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, | |
631 | void __iomem *mmio); | |
c9d39130 JG |
632 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
633 | unsigned int n_hc); | |
522479fb | 634 | static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio); |
f351b2d6 SB |
635 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, |
636 | void __iomem *mmio); | |
637 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, | |
638 | void __iomem *mmio); | |
639 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, | |
640 | void __iomem *mmio, unsigned int n_hc); | |
641 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, | |
642 | void __iomem *mmio); | |
643 | static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio); | |
29b7e43c MM |
644 | static void mv_soc_65n_phy_errata(struct mv_host_priv *hpriv, |
645 | void __iomem *mmio, unsigned int port); | |
7bb3c529 | 646 | static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio); |
e12bef50 | 647 | static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio, |
c9d39130 | 648 | unsigned int port_no); |
e12bef50 | 649 | static int mv_stop_edma(struct ata_port *ap); |
b562468c | 650 | static int mv_stop_edma_engine(void __iomem *port_mmio); |
00b81235 | 651 | static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma); |
47c2b677 | 652 | |
e49856d8 ML |
653 | static void mv_pmp_select(struct ata_port *ap, int pmp); |
654 | static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class, | |
655 | unsigned long deadline); | |
656 | static int mv_softreset(struct ata_link *link, unsigned int *class, | |
657 | unsigned long deadline); | |
29d187bb | 658 | static void mv_pmp_error_handler(struct ata_port *ap); |
4c299ca3 ML |
659 | static void mv_process_crpb_entries(struct ata_port *ap, |
660 | struct mv_port_priv *pp); | |
47c2b677 | 661 | |
da14265e ML |
662 | static void mv_sff_irq_clear(struct ata_port *ap); |
663 | static int mv_check_atapi_dma(struct ata_queued_cmd *qc); | |
664 | static void mv_bmdma_setup(struct ata_queued_cmd *qc); | |
665 | static void mv_bmdma_start(struct ata_queued_cmd *qc); | |
666 | static void mv_bmdma_stop(struct ata_queued_cmd *qc); | |
667 | static u8 mv_bmdma_status(struct ata_port *ap); | |
d16ab3f6 | 668 | static u8 mv_sff_check_status(struct ata_port *ap); |
da14265e | 669 | |
eb73d558 ML |
670 | /* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below |
671 | * because we have to allow room for worst case splitting of | |
672 | * PRDs for 64K boundaries in mv_fill_sg(). | |
673 | */ | |
13b74085 | 674 | #ifdef CONFIG_PCI |
c5d3e45a | 675 | static struct scsi_host_template mv5_sht = { |
68d1d07b | 676 | ATA_BASE_SHT(DRV_NAME), |
baf14aa1 | 677 | .sg_tablesize = MV_MAX_SG_CT / 2, |
c5d3e45a | 678 | .dma_boundary = MV_DMA_BOUNDARY, |
c5d3e45a | 679 | }; |
13b74085 | 680 | #endif |
c5d3e45a | 681 | static struct scsi_host_template mv6_sht = { |
68d1d07b | 682 | ATA_NCQ_SHT(DRV_NAME), |
138bfdd0 | 683 | .can_queue = MV_MAX_Q_DEPTH - 1, |
baf14aa1 | 684 | .sg_tablesize = MV_MAX_SG_CT / 2, |
20f733e7 | 685 | .dma_boundary = MV_DMA_BOUNDARY, |
20f733e7 BR |
686 | }; |
687 | ||
029cfd6b TH |
688 | static struct ata_port_operations mv5_ops = { |
689 | .inherits = &ata_sff_port_ops, | |
c9d39130 | 690 | |
c96f1732 AC |
691 | .lost_interrupt = ATA_OP_NULL, |
692 | ||
3e4a1391 | 693 | .qc_defer = mv_qc_defer, |
c9d39130 JG |
694 | .qc_prep = mv_qc_prep, |
695 | .qc_issue = mv_qc_issue, | |
c9d39130 | 696 | |
bdd4ddde JG |
697 | .freeze = mv_eh_freeze, |
698 | .thaw = mv_eh_thaw, | |
a1efdaba | 699 | .hardreset = mv_hardreset, |
bdd4ddde | 700 | |
c9d39130 JG |
701 | .scr_read = mv5_scr_read, |
702 | .scr_write = mv5_scr_write, | |
703 | ||
704 | .port_start = mv_port_start, | |
705 | .port_stop = mv_port_stop, | |
c9d39130 JG |
706 | }; |
707 | ||
029cfd6b | 708 | static struct ata_port_operations mv6_ops = { |
8930ff25 TH |
709 | .inherits = &ata_bmdma_port_ops, |
710 | ||
711 | .lost_interrupt = ATA_OP_NULL, | |
712 | ||
713 | .qc_defer = mv_qc_defer, | |
714 | .qc_prep = mv_qc_prep, | |
715 | .qc_issue = mv_qc_issue, | |
716 | ||
f273827e | 717 | .dev_config = mv6_dev_config, |
20f733e7 | 718 | |
8930ff25 TH |
719 | .freeze = mv_eh_freeze, |
720 | .thaw = mv_eh_thaw, | |
721 | .hardreset = mv_hardreset, | |
722 | .softreset = mv_softreset, | |
e49856d8 ML |
723 | .pmp_hardreset = mv_pmp_hardreset, |
724 | .pmp_softreset = mv_softreset, | |
29d187bb | 725 | .error_handler = mv_pmp_error_handler, |
da14265e | 726 | |
8930ff25 TH |
727 | .scr_read = mv_scr_read, |
728 | .scr_write = mv_scr_write, | |
729 | ||
40f21b11 | 730 | .sff_check_status = mv_sff_check_status, |
da14265e ML |
731 | .sff_irq_clear = mv_sff_irq_clear, |
732 | .check_atapi_dma = mv_check_atapi_dma, | |
733 | .bmdma_setup = mv_bmdma_setup, | |
734 | .bmdma_start = mv_bmdma_start, | |
735 | .bmdma_stop = mv_bmdma_stop, | |
736 | .bmdma_status = mv_bmdma_status, | |
8930ff25 TH |
737 | |
738 | .port_start = mv_port_start, | |
739 | .port_stop = mv_port_stop, | |
20f733e7 BR |
740 | }; |
741 | ||
029cfd6b TH |
742 | static struct ata_port_operations mv_iie_ops = { |
743 | .inherits = &mv6_ops, | |
744 | .dev_config = ATA_OP_NULL, | |
e4e7b892 | 745 | .qc_prep = mv_qc_prep_iie, |
e4e7b892 JG |
746 | }; |
747 | ||
98ac62de | 748 | static const struct ata_port_info mv_port_info[] = { |
20f733e7 | 749 | { /* chip_504x */ |
91b1a84c | 750 | .flags = MV_GEN_I_FLAGS, |
c361acbc | 751 | .pio_mask = ATA_PIO4, |
bf6263a8 | 752 | .udma_mask = ATA_UDMA6, |
c9d39130 | 753 | .port_ops = &mv5_ops, |
20f733e7 BR |
754 | }, |
755 | { /* chip_508x */ | |
91b1a84c | 756 | .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC, |
c361acbc | 757 | .pio_mask = ATA_PIO4, |
bf6263a8 | 758 | .udma_mask = ATA_UDMA6, |
c9d39130 | 759 | .port_ops = &mv5_ops, |
20f733e7 | 760 | }, |
47c2b677 | 761 | { /* chip_5080 */ |
91b1a84c | 762 | .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC, |
c361acbc | 763 | .pio_mask = ATA_PIO4, |
bf6263a8 | 764 | .udma_mask = ATA_UDMA6, |
c9d39130 | 765 | .port_ops = &mv5_ops, |
47c2b677 | 766 | }, |
20f733e7 | 767 | { /* chip_604x */ |
91b1a84c | 768 | .flags = MV_GEN_II_FLAGS, |
c361acbc | 769 | .pio_mask = ATA_PIO4, |
bf6263a8 | 770 | .udma_mask = ATA_UDMA6, |
c9d39130 | 771 | .port_ops = &mv6_ops, |
20f733e7 BR |
772 | }, |
773 | { /* chip_608x */ | |
91b1a84c | 774 | .flags = MV_GEN_II_FLAGS | MV_FLAG_DUAL_HC, |
c361acbc | 775 | .pio_mask = ATA_PIO4, |
bf6263a8 | 776 | .udma_mask = ATA_UDMA6, |
c9d39130 | 777 | .port_ops = &mv6_ops, |
20f733e7 | 778 | }, |
e4e7b892 | 779 | { /* chip_6042 */ |
91b1a84c | 780 | .flags = MV_GEN_IIE_FLAGS, |
c361acbc | 781 | .pio_mask = ATA_PIO4, |
bf6263a8 | 782 | .udma_mask = ATA_UDMA6, |
e4e7b892 JG |
783 | .port_ops = &mv_iie_ops, |
784 | }, | |
785 | { /* chip_7042 */ | |
91b1a84c | 786 | .flags = MV_GEN_IIE_FLAGS, |
c361acbc | 787 | .pio_mask = ATA_PIO4, |
bf6263a8 | 788 | .udma_mask = ATA_UDMA6, |
e4e7b892 JG |
789 | .port_ops = &mv_iie_ops, |
790 | }, | |
f351b2d6 | 791 | { /* chip_soc */ |
91b1a84c | 792 | .flags = MV_GEN_IIE_FLAGS, |
c361acbc | 793 | .pio_mask = ATA_PIO4, |
17c5aab5 ML |
794 | .udma_mask = ATA_UDMA6, |
795 | .port_ops = &mv_iie_ops, | |
f351b2d6 | 796 | }, |
20f733e7 BR |
797 | }; |
798 | ||
3b7d697d | 799 | static const struct pci_device_id mv_pci_tbl[] = { |
2d2744fc JG |
800 | { PCI_VDEVICE(MARVELL, 0x5040), chip_504x }, |
801 | { PCI_VDEVICE(MARVELL, 0x5041), chip_504x }, | |
802 | { PCI_VDEVICE(MARVELL, 0x5080), chip_5080 }, | |
803 | { PCI_VDEVICE(MARVELL, 0x5081), chip_508x }, | |
46c5784c ML |
804 | /* RocketRAID 1720/174x have different identifiers */ |
805 | { PCI_VDEVICE(TTI, 0x1720), chip_6042 }, | |
4462254a ML |
806 | { PCI_VDEVICE(TTI, 0x1740), chip_6042 }, |
807 | { PCI_VDEVICE(TTI, 0x1742), chip_6042 }, | |
2d2744fc JG |
808 | |
809 | { PCI_VDEVICE(MARVELL, 0x6040), chip_604x }, | |
810 | { PCI_VDEVICE(MARVELL, 0x6041), chip_604x }, | |
811 | { PCI_VDEVICE(MARVELL, 0x6042), chip_6042 }, | |
812 | { PCI_VDEVICE(MARVELL, 0x6080), chip_608x }, | |
813 | { PCI_VDEVICE(MARVELL, 0x6081), chip_608x }, | |
814 | ||
815 | { PCI_VDEVICE(ADAPTEC2, 0x0241), chip_604x }, | |
816 | ||
d9f9c6bc FA |
817 | /* Adaptec 1430SA */ |
818 | { PCI_VDEVICE(ADAPTEC2, 0x0243), chip_7042 }, | |
819 | ||
02a121da | 820 | /* Marvell 7042 support */ |
6a3d586d MT |
821 | { PCI_VDEVICE(MARVELL, 0x7042), chip_7042 }, |
822 | ||
02a121da ML |
823 | /* Highpoint RocketRAID PCIe series */ |
824 | { PCI_VDEVICE(TTI, 0x2300), chip_7042 }, | |
825 | { PCI_VDEVICE(TTI, 0x2310), chip_7042 }, | |
826 | ||
2d2744fc | 827 | { } /* terminate list */ |
20f733e7 BR |
828 | }; |
829 | ||
47c2b677 JG |
830 | static const struct mv_hw_ops mv5xxx_ops = { |
831 | .phy_errata = mv5_phy_errata, | |
832 | .enable_leds = mv5_enable_leds, | |
833 | .read_preamp = mv5_read_preamp, | |
834 | .reset_hc = mv5_reset_hc, | |
522479fb JG |
835 | .reset_flash = mv5_reset_flash, |
836 | .reset_bus = mv5_reset_bus, | |
47c2b677 JG |
837 | }; |
838 | ||
839 | static const struct mv_hw_ops mv6xxx_ops = { | |
840 | .phy_errata = mv6_phy_errata, | |
841 | .enable_leds = mv6_enable_leds, | |
842 | .read_preamp = mv6_read_preamp, | |
843 | .reset_hc = mv6_reset_hc, | |
522479fb JG |
844 | .reset_flash = mv6_reset_flash, |
845 | .reset_bus = mv_reset_pci_bus, | |
47c2b677 JG |
846 | }; |
847 | ||
f351b2d6 SB |
848 | static const struct mv_hw_ops mv_soc_ops = { |
849 | .phy_errata = mv6_phy_errata, | |
850 | .enable_leds = mv_soc_enable_leds, | |
851 | .read_preamp = mv_soc_read_preamp, | |
852 | .reset_hc = mv_soc_reset_hc, | |
853 | .reset_flash = mv_soc_reset_flash, | |
854 | .reset_bus = mv_soc_reset_bus, | |
855 | }; | |
856 | ||
29b7e43c MM |
857 | static const struct mv_hw_ops mv_soc_65n_ops = { |
858 | .phy_errata = mv_soc_65n_phy_errata, | |
859 | .enable_leds = mv_soc_enable_leds, | |
860 | .reset_hc = mv_soc_reset_hc, | |
861 | .reset_flash = mv_soc_reset_flash, | |
862 | .reset_bus = mv_soc_reset_bus, | |
863 | }; | |
864 | ||
20f733e7 BR |
865 | /* |
866 | * Functions | |
867 | */ | |
868 | ||
869 | static inline void writelfl(unsigned long data, void __iomem *addr) | |
870 | { | |
871 | writel(data, addr); | |
872 | (void) readl(addr); /* flush to avoid PCI posted write */ | |
873 | } | |
874 | ||
c9d39130 JG |
875 | static inline unsigned int mv_hc_from_port(unsigned int port) |
876 | { | |
877 | return port >> MV_PORT_HC_SHIFT; | |
878 | } | |
879 | ||
880 | static inline unsigned int mv_hardport_from_port(unsigned int port) | |
881 | { | |
882 | return port & MV_PORT_MASK; | |
883 | } | |
884 | ||
1cfd19ae ML |
885 | /* |
886 | * Consolidate some rather tricky bit shift calculations. | |
887 | * This is hot-path stuff, so not a function. | |
888 | * Simple code, with two return values, so macro rather than inline. | |
889 | * | |
890 | * port is the sole input, in range 0..7. | |
7368f919 ML |
891 | * shift is one output, for use with main_irq_cause / main_irq_mask registers. |
892 | * hardport is the other output, in range 0..3. | |
1cfd19ae ML |
893 | * |
894 | * Note that port and hardport may be the same variable in some cases. | |
895 | */ | |
896 | #define MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport) \ | |
897 | { \ | |
898 | shift = mv_hc_from_port(port) * HC_SHIFT; \ | |
899 | hardport = mv_hardport_from_port(port); \ | |
900 | shift += hardport * 2; \ | |
901 | } | |
902 | ||
352fab70 ML |
903 | static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc) |
904 | { | |
cae5a29d | 905 | return (base + SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ)); |
352fab70 ML |
906 | } |
907 | ||
c9d39130 JG |
908 | static inline void __iomem *mv_hc_base_from_port(void __iomem *base, |
909 | unsigned int port) | |
910 | { | |
911 | return mv_hc_base(base, mv_hc_from_port(port)); | |
912 | } | |
913 | ||
20f733e7 BR |
914 | static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port) |
915 | { | |
c9d39130 | 916 | return mv_hc_base_from_port(base, port) + |
8b260248 | 917 | MV_SATAHC_ARBTR_REG_SZ + |
c9d39130 | 918 | (mv_hardport_from_port(port) * MV_PORT_REG_SZ); |
20f733e7 BR |
919 | } |
920 | ||
e12bef50 ML |
921 | static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port) |
922 | { | |
923 | void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port); | |
924 | unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL; | |
925 | ||
926 | return hc_mmio + ofs; | |
927 | } | |
928 | ||
f351b2d6 SB |
929 | static inline void __iomem *mv_host_base(struct ata_host *host) |
930 | { | |
931 | struct mv_host_priv *hpriv = host->private_data; | |
932 | return hpriv->base; | |
933 | } | |
934 | ||
20f733e7 BR |
935 | static inline void __iomem *mv_ap_base(struct ata_port *ap) |
936 | { | |
f351b2d6 | 937 | return mv_port_base(mv_host_base(ap->host), ap->port_no); |
20f733e7 BR |
938 | } |
939 | ||
cca3974e | 940 | static inline int mv_get_hc_count(unsigned long port_flags) |
31961943 | 941 | { |
cca3974e | 942 | return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1); |
31961943 BR |
943 | } |
944 | ||
08da1759 ML |
945 | /** |
946 | * mv_save_cached_regs - (re-)initialize cached port registers | |
947 | * @ap: the port whose registers we are caching | |
948 | * | |
949 | * Initialize the local cache of port registers, | |
950 | * so that reading them over and over again can | |
951 | * be avoided on the hotter paths of this driver. | |
952 | * This saves a few microseconds each time we switch | |
953 | * to/from EDMA mode to perform (eg.) a drive cache flush. | |
954 | */ | |
955 | static void mv_save_cached_regs(struct ata_port *ap) | |
956 | { | |
957 | void __iomem *port_mmio = mv_ap_base(ap); | |
958 | struct mv_port_priv *pp = ap->private_data; | |
959 | ||
cae5a29d ML |
960 | pp->cached.fiscfg = readl(port_mmio + FISCFG); |
961 | pp->cached.ltmode = readl(port_mmio + LTMODE); | |
962 | pp->cached.haltcond = readl(port_mmio + EDMA_HALTCOND); | |
963 | pp->cached.unknown_rsvd = readl(port_mmio + EDMA_UNKNOWN_RSVD); | |
08da1759 ML |
964 | } |
965 | ||
966 | /** | |
967 | * mv_write_cached_reg - write to a cached port register | |
968 | * @addr: hardware address of the register | |
969 | * @old: pointer to cached value of the register | |
970 | * @new: new value for the register | |
971 | * | |
972 | * Write a new value to a cached register, | |
973 | * but only if the value is different from before. | |
974 | */ | |
975 | static inline void mv_write_cached_reg(void __iomem *addr, u32 *old, u32 new) | |
976 | { | |
977 | if (new != *old) { | |
12f3b6d7 | 978 | unsigned long laddr; |
08da1759 | 979 | *old = new; |
12f3b6d7 ML |
980 | /* |
981 | * Workaround for 88SX60x1-B2 FEr SATA#13: | |
982 | * Read-after-write is needed to prevent generating 64-bit | |
983 | * write cycles on the PCI bus for SATA interface registers | |
984 | * at offsets ending in 0x4 or 0xc. | |
985 | * | |
986 | * Looks like a lot of fuss, but it avoids an unnecessary | |
987 | * +1 usec read-after-write delay for unaffected registers. | |
988 | */ | |
76bf3441 | 989 | laddr = (unsigned long)addr & 0xffff; |
12f3b6d7 ML |
990 | if (laddr >= 0x300 && laddr <= 0x33c) { |
991 | laddr &= 0x000f; | |
992 | if (laddr == 0x4 || laddr == 0xc) { | |
993 | writelfl(new, addr); /* read after write */ | |
994 | return; | |
995 | } | |
996 | } | |
997 | writel(new, addr); /* unaffected by the errata */ | |
08da1759 ML |
998 | } |
999 | } | |
1000 | ||
c5d3e45a JG |
1001 | static void mv_set_edma_ptrs(void __iomem *port_mmio, |
1002 | struct mv_host_priv *hpriv, | |
1003 | struct mv_port_priv *pp) | |
1004 | { | |
bdd4ddde JG |
1005 | u32 index; |
1006 | ||
c5d3e45a JG |
1007 | /* |
1008 | * initialize request queue | |
1009 | */ | |
fcfb1f77 ML |
1010 | pp->req_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */ |
1011 | index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT; | |
bdd4ddde | 1012 | |
c5d3e45a | 1013 | WARN_ON(pp->crqb_dma & 0x3ff); |
cae5a29d | 1014 | writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI); |
bdd4ddde | 1015 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index, |
cae5a29d ML |
1016 | port_mmio + EDMA_REQ_Q_IN_PTR); |
1017 | writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR); | |
c5d3e45a JG |
1018 | |
1019 | /* | |
1020 | * initialize response queue | |
1021 | */ | |
fcfb1f77 ML |
1022 | pp->resp_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */ |
1023 | index = pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT; | |
bdd4ddde | 1024 | |
c5d3e45a | 1025 | WARN_ON(pp->crpb_dma & 0xff); |
cae5a29d ML |
1026 | writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI); |
1027 | writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR); | |
bdd4ddde | 1028 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index, |
cae5a29d | 1029 | port_mmio + EDMA_RSP_Q_OUT_PTR); |
c5d3e45a JG |
1030 | } |
1031 | ||
2b748a0a ML |
1032 | static void mv_write_main_irq_mask(u32 mask, struct mv_host_priv *hpriv) |
1033 | { | |
1034 | /* | |
1035 | * When writing to the main_irq_mask in hardware, | |
1036 | * we must ensure exclusivity between the interrupt coalescing bits | |
1037 | * and the corresponding individual port DONE_IRQ bits. | |
1038 | * | |
1039 | * Note that this register is really an "IRQ enable" register, | |
1040 | * not an "IRQ mask" register as Marvell's naming might suggest. | |
1041 | */ | |
1042 | if (mask & (ALL_PORTS_COAL_DONE | PORTS_0_3_COAL_DONE)) | |
1043 | mask &= ~DONE_IRQ_0_3; | |
1044 | if (mask & (ALL_PORTS_COAL_DONE | PORTS_4_7_COAL_DONE)) | |
1045 | mask &= ~DONE_IRQ_4_7; | |
1046 | writelfl(mask, hpriv->main_irq_mask_addr); | |
1047 | } | |
1048 | ||
c4de573b ML |
1049 | static void mv_set_main_irq_mask(struct ata_host *host, |
1050 | u32 disable_bits, u32 enable_bits) | |
1051 | { | |
1052 | struct mv_host_priv *hpriv = host->private_data; | |
1053 | u32 old_mask, new_mask; | |
1054 | ||
96e2c487 | 1055 | old_mask = hpriv->main_irq_mask; |
c4de573b | 1056 | new_mask = (old_mask & ~disable_bits) | enable_bits; |
96e2c487 ML |
1057 | if (new_mask != old_mask) { |
1058 | hpriv->main_irq_mask = new_mask; | |
2b748a0a | 1059 | mv_write_main_irq_mask(new_mask, hpriv); |
96e2c487 | 1060 | } |
c4de573b ML |
1061 | } |
1062 | ||
1063 | static void mv_enable_port_irqs(struct ata_port *ap, | |
1064 | unsigned int port_bits) | |
1065 | { | |
1066 | unsigned int shift, hardport, port = ap->port_no; | |
1067 | u32 disable_bits, enable_bits; | |
1068 | ||
1069 | MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport); | |
1070 | ||
1071 | disable_bits = (DONE_IRQ | ERR_IRQ) << shift; | |
1072 | enable_bits = port_bits << shift; | |
1073 | mv_set_main_irq_mask(ap->host, disable_bits, enable_bits); | |
1074 | } | |
1075 | ||
00b81235 ML |
1076 | static void mv_clear_and_enable_port_irqs(struct ata_port *ap, |
1077 | void __iomem *port_mmio, | |
1078 | unsigned int port_irqs) | |
1079 | { | |
1080 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1081 | int hardport = mv_hardport_from_port(ap->port_no); | |
1082 | void __iomem *hc_mmio = mv_hc_base_from_port( | |
1083 | mv_host_base(ap->host), ap->port_no); | |
1084 | u32 hc_irq_cause; | |
1085 | ||
1086 | /* clear EDMA event indicators, if any */ | |
cae5a29d | 1087 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE); |
00b81235 ML |
1088 | |
1089 | /* clear pending irq events */ | |
1090 | hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport); | |
cae5a29d | 1091 | writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE); |
00b81235 ML |
1092 | |
1093 | /* clear FIS IRQ Cause */ | |
1094 | if (IS_GEN_IIE(hpriv)) | |
cae5a29d | 1095 | writelfl(0, port_mmio + FIS_IRQ_CAUSE); |
00b81235 ML |
1096 | |
1097 | mv_enable_port_irqs(ap, port_irqs); | |
1098 | } | |
1099 | ||
2b748a0a ML |
1100 | static void mv_set_irq_coalescing(struct ata_host *host, |
1101 | unsigned int count, unsigned int usecs) | |
1102 | { | |
1103 | struct mv_host_priv *hpriv = host->private_data; | |
1104 | void __iomem *mmio = hpriv->base, *hc_mmio; | |
1105 | u32 coal_enable = 0; | |
1106 | unsigned long flags; | |
6abf4678 | 1107 | unsigned int clks, is_dual_hc = hpriv->n_ports > MV_PORTS_PER_HC; |
2b748a0a ML |
1108 | const u32 coal_disable = PORTS_0_3_COAL_DONE | PORTS_4_7_COAL_DONE | |
1109 | ALL_PORTS_COAL_DONE; | |
1110 | ||
1111 | /* Disable IRQ coalescing if either threshold is zero */ | |
1112 | if (!usecs || !count) { | |
1113 | clks = count = 0; | |
1114 | } else { | |
1115 | /* Respect maximum limits of the hardware */ | |
1116 | clks = usecs * COAL_CLOCKS_PER_USEC; | |
1117 | if (clks > MAX_COAL_TIME_THRESHOLD) | |
1118 | clks = MAX_COAL_TIME_THRESHOLD; | |
1119 | if (count > MAX_COAL_IO_COUNT) | |
1120 | count = MAX_COAL_IO_COUNT; | |
1121 | } | |
1122 | ||
1123 | spin_lock_irqsave(&host->lock, flags); | |
6abf4678 | 1124 | mv_set_main_irq_mask(host, coal_disable, 0); |
2b748a0a | 1125 | |
6abf4678 | 1126 | if (is_dual_hc && !IS_GEN_I(hpriv)) { |
2b748a0a | 1127 | /* |
6abf4678 ML |
1128 | * GEN_II/GEN_IIE with dual host controllers: |
1129 | * one set of global thresholds for the entire chip. | |
2b748a0a | 1130 | */ |
cae5a29d ML |
1131 | writel(clks, mmio + IRQ_COAL_TIME_THRESHOLD); |
1132 | writel(count, mmio + IRQ_COAL_IO_THRESHOLD); | |
2b748a0a | 1133 | /* clear leftover coal IRQ bit */ |
cae5a29d | 1134 | writel(~ALL_PORTS_COAL_IRQ, mmio + IRQ_COAL_CAUSE); |
6abf4678 ML |
1135 | if (count) |
1136 | coal_enable = ALL_PORTS_COAL_DONE; | |
1137 | clks = count = 0; /* force clearing of regular regs below */ | |
2b748a0a | 1138 | } |
6abf4678 | 1139 | |
2b748a0a ML |
1140 | /* |
1141 | * All chips: independent thresholds for each HC on the chip. | |
1142 | */ | |
1143 | hc_mmio = mv_hc_base_from_port(mmio, 0); | |
cae5a29d ML |
1144 | writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD); |
1145 | writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD); | |
1146 | writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE); | |
6abf4678 ML |
1147 | if (count) |
1148 | coal_enable |= PORTS_0_3_COAL_DONE; | |
1149 | if (is_dual_hc) { | |
2b748a0a | 1150 | hc_mmio = mv_hc_base_from_port(mmio, MV_PORTS_PER_HC); |
cae5a29d ML |
1151 | writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD); |
1152 | writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD); | |
1153 | writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE); | |
6abf4678 ML |
1154 | if (count) |
1155 | coal_enable |= PORTS_4_7_COAL_DONE; | |
2b748a0a | 1156 | } |
2b748a0a | 1157 | |
6abf4678 | 1158 | mv_set_main_irq_mask(host, 0, coal_enable); |
2b748a0a ML |
1159 | spin_unlock_irqrestore(&host->lock, flags); |
1160 | } | |
1161 | ||
05b308e1 | 1162 | /** |
00b81235 | 1163 | * mv_start_edma - Enable eDMA engine |
05b308e1 BR |
1164 | * @base: port base address |
1165 | * @pp: port private data | |
1166 | * | |
beec7dbc TH |
1167 | * Verify the local cache of the eDMA state is accurate with a |
1168 | * WARN_ON. | |
05b308e1 BR |
1169 | * |
1170 | * LOCKING: | |
1171 | * Inherited from caller. | |
1172 | */ | |
00b81235 | 1173 | static void mv_start_edma(struct ata_port *ap, void __iomem *port_mmio, |
72109168 | 1174 | struct mv_port_priv *pp, u8 protocol) |
20f733e7 | 1175 | { |
72109168 ML |
1176 | int want_ncq = (protocol == ATA_PROT_NCQ); |
1177 | ||
1178 | if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) { | |
1179 | int using_ncq = ((pp->pp_flags & MV_PP_FLAG_NCQ_EN) != 0); | |
1180 | if (want_ncq != using_ncq) | |
b562468c | 1181 | mv_stop_edma(ap); |
72109168 | 1182 | } |
c5d3e45a | 1183 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) { |
0c58912e | 1184 | struct mv_host_priv *hpriv = ap->host->private_data; |
0c58912e | 1185 | |
00b81235 | 1186 | mv_edma_cfg(ap, want_ncq, 1); |
0c58912e | 1187 | |
f630d562 | 1188 | mv_set_edma_ptrs(port_mmio, hpriv, pp); |
00b81235 | 1189 | mv_clear_and_enable_port_irqs(ap, port_mmio, DONE_IRQ|ERR_IRQ); |
bdd4ddde | 1190 | |
cae5a29d | 1191 | writelfl(EDMA_EN, port_mmio + EDMA_CMD); |
afb0edd9 BR |
1192 | pp->pp_flags |= MV_PP_FLAG_EDMA_EN; |
1193 | } | |
20f733e7 BR |
1194 | } |
1195 | ||
9b2c4e0b ML |
1196 | static void mv_wait_for_edma_empty_idle(struct ata_port *ap) |
1197 | { | |
1198 | void __iomem *port_mmio = mv_ap_base(ap); | |
1199 | const u32 empty_idle = (EDMA_STATUS_CACHE_EMPTY | EDMA_STATUS_IDLE); | |
1200 | const int per_loop = 5, timeout = (15 * 1000 / per_loop); | |
1201 | int i; | |
1202 | ||
1203 | /* | |
1204 | * Wait for the EDMA engine to finish transactions in progress. | |
c46938cc ML |
1205 | * No idea what a good "timeout" value might be, but measurements |
1206 | * indicate that it often requires hundreds of microseconds | |
1207 | * with two drives in-use. So we use the 15msec value above | |
1208 | * as a rough guess at what even more drives might require. | |
9b2c4e0b ML |
1209 | */ |
1210 | for (i = 0; i < timeout; ++i) { | |
cae5a29d | 1211 | u32 edma_stat = readl(port_mmio + EDMA_STATUS); |
9b2c4e0b ML |
1212 | if ((edma_stat & empty_idle) == empty_idle) |
1213 | break; | |
1214 | udelay(per_loop); | |
1215 | } | |
a9a79dfe | 1216 | /* ata_port_info(ap, "%s: %u+ usecs\n", __func__, i); */ |
9b2c4e0b ML |
1217 | } |
1218 | ||
05b308e1 | 1219 | /** |
e12bef50 | 1220 | * mv_stop_edma_engine - Disable eDMA engine |
b562468c | 1221 | * @port_mmio: io base address |
05b308e1 BR |
1222 | * |
1223 | * LOCKING: | |
1224 | * Inherited from caller. | |
1225 | */ | |
b562468c | 1226 | static int mv_stop_edma_engine(void __iomem *port_mmio) |
20f733e7 | 1227 | { |
b562468c | 1228 | int i; |
31961943 | 1229 | |
b562468c | 1230 | /* Disable eDMA. The disable bit auto clears. */ |
cae5a29d | 1231 | writelfl(EDMA_DS, port_mmio + EDMA_CMD); |
8b260248 | 1232 | |
b562468c ML |
1233 | /* Wait for the chip to confirm eDMA is off. */ |
1234 | for (i = 10000; i > 0; i--) { | |
cae5a29d | 1235 | u32 reg = readl(port_mmio + EDMA_CMD); |
4537deb5 | 1236 | if (!(reg & EDMA_EN)) |
b562468c ML |
1237 | return 0; |
1238 | udelay(10); | |
31961943 | 1239 | } |
b562468c | 1240 | return -EIO; |
20f733e7 BR |
1241 | } |
1242 | ||
e12bef50 | 1243 | static int mv_stop_edma(struct ata_port *ap) |
0ea9e179 | 1244 | { |
b562468c ML |
1245 | void __iomem *port_mmio = mv_ap_base(ap); |
1246 | struct mv_port_priv *pp = ap->private_data; | |
66e57a2c | 1247 | int err = 0; |
0ea9e179 | 1248 | |
b562468c ML |
1249 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) |
1250 | return 0; | |
1251 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; | |
9b2c4e0b | 1252 | mv_wait_for_edma_empty_idle(ap); |
b562468c | 1253 | if (mv_stop_edma_engine(port_mmio)) { |
a9a79dfe | 1254 | ata_port_err(ap, "Unable to stop eDMA\n"); |
66e57a2c | 1255 | err = -EIO; |
b562468c | 1256 | } |
66e57a2c ML |
1257 | mv_edma_cfg(ap, 0, 0); |
1258 | return err; | |
0ea9e179 JG |
1259 | } |
1260 | ||
8a70f8dc | 1261 | #ifdef ATA_DEBUG |
31961943 | 1262 | static void mv_dump_mem(void __iomem *start, unsigned bytes) |
20f733e7 | 1263 | { |
31961943 BR |
1264 | int b, w; |
1265 | for (b = 0; b < bytes; ) { | |
1266 | DPRINTK("%p: ", start + b); | |
1267 | for (w = 0; b < bytes && w < 4; w++) { | |
2dcb407e | 1268 | printk("%08x ", readl(start + b)); |
31961943 BR |
1269 | b += sizeof(u32); |
1270 | } | |
1271 | printk("\n"); | |
1272 | } | |
31961943 | 1273 | } |
8a70f8dc | 1274 | #endif |
13b74085 | 1275 | #if defined(ATA_DEBUG) || defined(CONFIG_PCI) |
31961943 BR |
1276 | static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes) |
1277 | { | |
1278 | #ifdef ATA_DEBUG | |
1279 | int b, w; | |
1280 | u32 dw; | |
1281 | for (b = 0; b < bytes; ) { | |
1282 | DPRINTK("%02x: ", b); | |
1283 | for (w = 0; b < bytes && w < 4; w++) { | |
2dcb407e JG |
1284 | (void) pci_read_config_dword(pdev, b, &dw); |
1285 | printk("%08x ", dw); | |
31961943 BR |
1286 | b += sizeof(u32); |
1287 | } | |
1288 | printk("\n"); | |
1289 | } | |
1290 | #endif | |
1291 | } | |
13b74085 | 1292 | #endif |
31961943 BR |
1293 | static void mv_dump_all_regs(void __iomem *mmio_base, int port, |
1294 | struct pci_dev *pdev) | |
1295 | { | |
1296 | #ifdef ATA_DEBUG | |
8b260248 | 1297 | void __iomem *hc_base = mv_hc_base(mmio_base, |
31961943 BR |
1298 | port >> MV_PORT_HC_SHIFT); |
1299 | void __iomem *port_base; | |
1300 | int start_port, num_ports, p, start_hc, num_hcs, hc; | |
1301 | ||
1302 | if (0 > port) { | |
1303 | start_hc = start_port = 0; | |
1304 | num_ports = 8; /* shld be benign for 4 port devs */ | |
1305 | num_hcs = 2; | |
1306 | } else { | |
1307 | start_hc = port >> MV_PORT_HC_SHIFT; | |
1308 | start_port = port; | |
1309 | num_ports = num_hcs = 1; | |
1310 | } | |
8b260248 | 1311 | DPRINTK("All registers for port(s) %u-%u:\n", start_port, |
31961943 BR |
1312 | num_ports > 1 ? num_ports - 1 : start_port); |
1313 | ||
1314 | if (NULL != pdev) { | |
1315 | DPRINTK("PCI config space regs:\n"); | |
1316 | mv_dump_pci_cfg(pdev, 0x68); | |
1317 | } | |
1318 | DPRINTK("PCI regs:\n"); | |
1319 | mv_dump_mem(mmio_base+0xc00, 0x3c); | |
1320 | mv_dump_mem(mmio_base+0xd00, 0x34); | |
1321 | mv_dump_mem(mmio_base+0xf00, 0x4); | |
1322 | mv_dump_mem(mmio_base+0x1d00, 0x6c); | |
1323 | for (hc = start_hc; hc < start_hc + num_hcs; hc++) { | |
d220c37e | 1324 | hc_base = mv_hc_base(mmio_base, hc); |
31961943 BR |
1325 | DPRINTK("HC regs (HC %i):\n", hc); |
1326 | mv_dump_mem(hc_base, 0x1c); | |
1327 | } | |
1328 | for (p = start_port; p < start_port + num_ports; p++) { | |
1329 | port_base = mv_port_base(mmio_base, p); | |
2dcb407e | 1330 | DPRINTK("EDMA regs (port %i):\n", p); |
31961943 | 1331 | mv_dump_mem(port_base, 0x54); |
2dcb407e | 1332 | DPRINTK("SATA regs (port %i):\n", p); |
31961943 BR |
1333 | mv_dump_mem(port_base+0x300, 0x60); |
1334 | } | |
1335 | #endif | |
20f733e7 BR |
1336 | } |
1337 | ||
1338 | static unsigned int mv_scr_offset(unsigned int sc_reg_in) | |
1339 | { | |
1340 | unsigned int ofs; | |
1341 | ||
1342 | switch (sc_reg_in) { | |
1343 | case SCR_STATUS: | |
1344 | case SCR_CONTROL: | |
1345 | case SCR_ERROR: | |
cae5a29d | 1346 | ofs = SATA_STATUS + (sc_reg_in * sizeof(u32)); |
20f733e7 BR |
1347 | break; |
1348 | case SCR_ACTIVE: | |
cae5a29d | 1349 | ofs = SATA_ACTIVE; /* active is not with the others */ |
20f733e7 BR |
1350 | break; |
1351 | default: | |
1352 | ofs = 0xffffffffU; | |
1353 | break; | |
1354 | } | |
1355 | return ofs; | |
1356 | } | |
1357 | ||
82ef04fb | 1358 | static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val) |
20f733e7 BR |
1359 | { |
1360 | unsigned int ofs = mv_scr_offset(sc_reg_in); | |
1361 | ||
da3dbb17 | 1362 | if (ofs != 0xffffffffU) { |
82ef04fb | 1363 | *val = readl(mv_ap_base(link->ap) + ofs); |
da3dbb17 TH |
1364 | return 0; |
1365 | } else | |
1366 | return -EINVAL; | |
20f733e7 BR |
1367 | } |
1368 | ||
82ef04fb | 1369 | static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val) |
20f733e7 BR |
1370 | { |
1371 | unsigned int ofs = mv_scr_offset(sc_reg_in); | |
1372 | ||
da3dbb17 | 1373 | if (ofs != 0xffffffffU) { |
20091773 | 1374 | void __iomem *addr = mv_ap_base(link->ap) + ofs; |
9013d64e | 1375 | struct mv_host_priv *hpriv = link->ap->host->private_data; |
20091773 ML |
1376 | if (sc_reg_in == SCR_CONTROL) { |
1377 | /* | |
1378 | * Workaround for 88SX60x1 FEr SATA#26: | |
1379 | * | |
25985edc | 1380 | * COMRESETs have to take care not to accidentally |
20091773 ML |
1381 | * put the drive to sleep when writing SCR_CONTROL. |
1382 | * Setting bits 12..15 prevents this problem. | |
1383 | * | |
1384 | * So if we see an outbound COMMRESET, set those bits. | |
1385 | * Ditto for the followup write that clears the reset. | |
1386 | * | |
1387 | * The proprietary driver does this for | |
1388 | * all chip versions, and so do we. | |
1389 | */ | |
1390 | if ((val & 0xf) == 1 || (readl(addr) & 0xf) == 1) | |
1391 | val |= 0xf000; | |
9013d64e LA |
1392 | |
1393 | if (hpriv->hp_flags & MV_HP_FIX_LP_PHY_CTL) { | |
1394 | void __iomem *lp_phy_addr = | |
1395 | mv_ap_base(link->ap) + LP_PHY_CTL; | |
1396 | /* | |
1397 | * Set PHY speed according to SControl speed. | |
1398 | */ | |
3661aa99 TP |
1399 | u32 lp_phy_val = |
1400 | LP_PHY_CTL_PIN_PU_PLL | | |
1401 | LP_PHY_CTL_PIN_PU_RX | | |
1402 | LP_PHY_CTL_PIN_PU_TX; | |
1403 | ||
1404 | if ((val & 0xf0) != 0x10) | |
1405 | lp_phy_val |= | |
1406 | LP_PHY_CTL_GEN_TX_3G | | |
1407 | LP_PHY_CTL_GEN_RX_3G; | |
1408 | ||
1409 | writelfl(lp_phy_val, lp_phy_addr); | |
9013d64e | 1410 | } |
20091773 ML |
1411 | } |
1412 | writelfl(val, addr); | |
da3dbb17 TH |
1413 | return 0; |
1414 | } else | |
1415 | return -EINVAL; | |
20f733e7 BR |
1416 | } |
1417 | ||
f273827e ML |
1418 | static void mv6_dev_config(struct ata_device *adev) |
1419 | { | |
1420 | /* | |
e49856d8 ML |
1421 | * Deal with Gen-II ("mv6") hardware quirks/restrictions: |
1422 | * | |
1423 | * Gen-II does not support NCQ over a port multiplier | |
1424 | * (no FIS-based switching). | |
f273827e | 1425 | */ |
e49856d8 | 1426 | if (adev->flags & ATA_DFLAG_NCQ) { |
352fab70 | 1427 | if (sata_pmp_attached(adev->link->ap)) { |
e49856d8 | 1428 | adev->flags &= ~ATA_DFLAG_NCQ; |
a9a79dfe | 1429 | ata_dev_info(adev, |
352fab70 | 1430 | "NCQ disabled for command-based switching\n"); |
352fab70 | 1431 | } |
e49856d8 | 1432 | } |
f273827e ML |
1433 | } |
1434 | ||
3e4a1391 ML |
1435 | static int mv_qc_defer(struct ata_queued_cmd *qc) |
1436 | { | |
1437 | struct ata_link *link = qc->dev->link; | |
1438 | struct ata_port *ap = link->ap; | |
1439 | struct mv_port_priv *pp = ap->private_data; | |
1440 | ||
29d187bb ML |
1441 | /* |
1442 | * Don't allow new commands if we're in a delayed EH state | |
1443 | * for NCQ and/or FIS-based switching. | |
1444 | */ | |
1445 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) | |
1446 | return ATA_DEFER_PORT; | |
159a7ff7 GG |
1447 | |
1448 | /* PIO commands need exclusive link: no other commands [DMA or PIO] | |
1449 | * can run concurrently. | |
1450 | * set excl_link when we want to send a PIO command in DMA mode | |
1451 | * or a non-NCQ command in NCQ mode. | |
1452 | * When we receive a command from that link, and there are no | |
1453 | * outstanding commands, mark a flag to clear excl_link and let | |
1454 | * the command go through. | |
1455 | */ | |
1456 | if (unlikely(ap->excl_link)) { | |
1457 | if (link == ap->excl_link) { | |
1458 | if (ap->nr_active_links) | |
1459 | return ATA_DEFER_PORT; | |
1460 | qc->flags |= ATA_QCFLAG_CLEAR_EXCL; | |
1461 | return 0; | |
1462 | } else | |
1463 | return ATA_DEFER_PORT; | |
1464 | } | |
1465 | ||
3e4a1391 ML |
1466 | /* |
1467 | * If the port is completely idle, then allow the new qc. | |
1468 | */ | |
1469 | if (ap->nr_active_links == 0) | |
1470 | return 0; | |
1471 | ||
4bdee6c5 TH |
1472 | /* |
1473 | * The port is operating in host queuing mode (EDMA) with NCQ | |
1474 | * enabled, allow multiple NCQ commands. EDMA also allows | |
1475 | * queueing multiple DMA commands but libata core currently | |
1476 | * doesn't allow it. | |
1477 | */ | |
1478 | if ((pp->pp_flags & MV_PP_FLAG_EDMA_EN) && | |
159a7ff7 GG |
1479 | (pp->pp_flags & MV_PP_FLAG_NCQ_EN)) { |
1480 | if (ata_is_ncq(qc->tf.protocol)) | |
1481 | return 0; | |
1482 | else { | |
1483 | ap->excl_link = link; | |
1484 | return ATA_DEFER_PORT; | |
1485 | } | |
1486 | } | |
4bdee6c5 | 1487 | |
3e4a1391 ML |
1488 | return ATA_DEFER_PORT; |
1489 | } | |
1490 | ||
08da1759 | 1491 | static void mv_config_fbs(struct ata_port *ap, int want_ncq, int want_fbs) |
e49856d8 | 1492 | { |
08da1759 ML |
1493 | struct mv_port_priv *pp = ap->private_data; |
1494 | void __iomem *port_mmio; | |
00f42eab | 1495 | |
08da1759 ML |
1496 | u32 fiscfg, *old_fiscfg = &pp->cached.fiscfg; |
1497 | u32 ltmode, *old_ltmode = &pp->cached.ltmode; | |
1498 | u32 haltcond, *old_haltcond = &pp->cached.haltcond; | |
00f42eab | 1499 | |
08da1759 ML |
1500 | ltmode = *old_ltmode & ~LTMODE_BIT8; |
1501 | haltcond = *old_haltcond | EDMA_ERR_DEV; | |
00f42eab ML |
1502 | |
1503 | if (want_fbs) { | |
08da1759 ML |
1504 | fiscfg = *old_fiscfg | FISCFG_SINGLE_SYNC; |
1505 | ltmode = *old_ltmode | LTMODE_BIT8; | |
4c299ca3 | 1506 | if (want_ncq) |
08da1759 | 1507 | haltcond &= ~EDMA_ERR_DEV; |
4c299ca3 | 1508 | else |
08da1759 ML |
1509 | fiscfg |= FISCFG_WAIT_DEV_ERR; |
1510 | } else { | |
1511 | fiscfg = *old_fiscfg & ~(FISCFG_SINGLE_SYNC | FISCFG_WAIT_DEV_ERR); | |
e49856d8 | 1512 | } |
00f42eab | 1513 | |
08da1759 | 1514 | port_mmio = mv_ap_base(ap); |
cae5a29d ML |
1515 | mv_write_cached_reg(port_mmio + FISCFG, old_fiscfg, fiscfg); |
1516 | mv_write_cached_reg(port_mmio + LTMODE, old_ltmode, ltmode); | |
1517 | mv_write_cached_reg(port_mmio + EDMA_HALTCOND, old_haltcond, haltcond); | |
f273827e ML |
1518 | } |
1519 | ||
dd2890f6 ML |
1520 | static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq) |
1521 | { | |
1522 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1523 | u32 old, new; | |
1524 | ||
1525 | /* workaround for 88SX60x1 FEr SATA#25 (part 1) */ | |
cae5a29d | 1526 | old = readl(hpriv->base + GPIO_PORT_CTL); |
dd2890f6 ML |
1527 | if (want_ncq) |
1528 | new = old | (1 << 22); | |
1529 | else | |
1530 | new = old & ~(1 << 22); | |
1531 | if (new != old) | |
cae5a29d | 1532 | writel(new, hpriv->base + GPIO_PORT_CTL); |
dd2890f6 ML |
1533 | } |
1534 | ||
c01e8a23 | 1535 | /** |
40f21b11 ML |
1536 | * mv_bmdma_enable - set a magic bit on GEN_IIE to allow bmdma |
1537 | * @ap: Port being initialized | |
c01e8a23 ML |
1538 | * |
1539 | * There are two DMA modes on these chips: basic DMA, and EDMA. | |
1540 | * | |
1541 | * Bit-0 of the "EDMA RESERVED" register enables/disables use | |
1542 | * of basic DMA on the GEN_IIE versions of the chips. | |
1543 | * | |
1544 | * This bit survives EDMA resets, and must be set for basic DMA | |
1545 | * to function, and should be cleared when EDMA is active. | |
1546 | */ | |
1547 | static void mv_bmdma_enable_iie(struct ata_port *ap, int enable_bmdma) | |
1548 | { | |
1549 | struct mv_port_priv *pp = ap->private_data; | |
1550 | u32 new, *old = &pp->cached.unknown_rsvd; | |
1551 | ||
1552 | if (enable_bmdma) | |
1553 | new = *old | 1; | |
1554 | else | |
1555 | new = *old & ~1; | |
cae5a29d | 1556 | mv_write_cached_reg(mv_ap_base(ap) + EDMA_UNKNOWN_RSVD, old, new); |
c01e8a23 ML |
1557 | } |
1558 | ||
000b344f ML |
1559 | /* |
1560 | * SOC chips have an issue whereby the HDD LEDs don't always blink | |
1561 | * during I/O when NCQ is enabled. Enabling a special "LED blink" mode | |
1562 | * of the SOC takes care of it, generating a steady blink rate when | |
1563 | * any drive on the chip is active. | |
1564 | * | |
1565 | * Unfortunately, the blink mode is a global hardware setting for the SOC, | |
1566 | * so we must use it whenever at least one port on the SOC has NCQ enabled. | |
1567 | * | |
1568 | * We turn "LED blink" off when NCQ is not in use anywhere, because the normal | |
1569 | * LED operation works then, and provides better (more accurate) feedback. | |
1570 | * | |
1571 | * Note that this code assumes that an SOC never has more than one HC onboard. | |
1572 | */ | |
1573 | static void mv_soc_led_blink_enable(struct ata_port *ap) | |
1574 | { | |
1575 | struct ata_host *host = ap->host; | |
1576 | struct mv_host_priv *hpriv = host->private_data; | |
1577 | void __iomem *hc_mmio; | |
1578 | u32 led_ctrl; | |
1579 | ||
1580 | if (hpriv->hp_flags & MV_HP_QUIRK_LED_BLINK_EN) | |
1581 | return; | |
1582 | hpriv->hp_flags |= MV_HP_QUIRK_LED_BLINK_EN; | |
1583 | hc_mmio = mv_hc_base_from_port(mv_host_base(host), ap->port_no); | |
cae5a29d ML |
1584 | led_ctrl = readl(hc_mmio + SOC_LED_CTRL); |
1585 | writel(led_ctrl | SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL); | |
000b344f ML |
1586 | } |
1587 | ||
1588 | static void mv_soc_led_blink_disable(struct ata_port *ap) | |
1589 | { | |
1590 | struct ata_host *host = ap->host; | |
1591 | struct mv_host_priv *hpriv = host->private_data; | |
1592 | void __iomem *hc_mmio; | |
1593 | u32 led_ctrl; | |
1594 | unsigned int port; | |
1595 | ||
1596 | if (!(hpriv->hp_flags & MV_HP_QUIRK_LED_BLINK_EN)) | |
1597 | return; | |
1598 | ||
1599 | /* disable led-blink only if no ports are using NCQ */ | |
1600 | for (port = 0; port < hpriv->n_ports; port++) { | |
1601 | struct ata_port *this_ap = host->ports[port]; | |
1602 | struct mv_port_priv *pp = this_ap->private_data; | |
1603 | ||
1604 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) | |
1605 | return; | |
1606 | } | |
1607 | ||
1608 | hpriv->hp_flags &= ~MV_HP_QUIRK_LED_BLINK_EN; | |
1609 | hc_mmio = mv_hc_base_from_port(mv_host_base(host), ap->port_no); | |
cae5a29d ML |
1610 | led_ctrl = readl(hc_mmio + SOC_LED_CTRL); |
1611 | writel(led_ctrl & ~SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL); | |
000b344f ML |
1612 | } |
1613 | ||
00b81235 | 1614 | static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma) |
e4e7b892 | 1615 | { |
0c58912e | 1616 | u32 cfg; |
e12bef50 ML |
1617 | struct mv_port_priv *pp = ap->private_data; |
1618 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1619 | void __iomem *port_mmio = mv_ap_base(ap); | |
e4e7b892 JG |
1620 | |
1621 | /* set up non-NCQ EDMA configuration */ | |
0c58912e | 1622 | cfg = EDMA_CFG_Q_DEPTH; /* always 0x1f for *all* chips */ |
d16ab3f6 ML |
1623 | pp->pp_flags &= |
1624 | ~(MV_PP_FLAG_FBS_EN | MV_PP_FLAG_NCQ_EN | MV_PP_FLAG_FAKE_ATA_BUSY); | |
e4e7b892 | 1625 | |
0c58912e | 1626 | if (IS_GEN_I(hpriv)) |
e4e7b892 JG |
1627 | cfg |= (1 << 8); /* enab config burst size mask */ |
1628 | ||
dd2890f6 | 1629 | else if (IS_GEN_II(hpriv)) { |
e4e7b892 | 1630 | cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN; |
dd2890f6 | 1631 | mv_60x1_errata_sata25(ap, want_ncq); |
e4e7b892 | 1632 | |
dd2890f6 | 1633 | } else if (IS_GEN_IIE(hpriv)) { |
00f42eab ML |
1634 | int want_fbs = sata_pmp_attached(ap); |
1635 | /* | |
1636 | * Possible future enhancement: | |
1637 | * | |
1638 | * The chip can use FBS with non-NCQ, if we allow it, | |
1639 | * But first we need to have the error handling in place | |
1640 | * for this mode (datasheet section 7.3.15.4.2.3). | |
1641 | * So disallow non-NCQ FBS for now. | |
1642 | */ | |
1643 | want_fbs &= want_ncq; | |
1644 | ||
08da1759 | 1645 | mv_config_fbs(ap, want_ncq, want_fbs); |
00f42eab ML |
1646 | |
1647 | if (want_fbs) { | |
1648 | pp->pp_flags |= MV_PP_FLAG_FBS_EN; | |
1649 | cfg |= EDMA_CFG_EDMA_FBS; /* FIS-based switching */ | |
1650 | } | |
1651 | ||
e728eabe | 1652 | cfg |= (1 << 23); /* do not mask PM field in rx'd FIS */ |
00b81235 ML |
1653 | if (want_edma) { |
1654 | cfg |= (1 << 22); /* enab 4-entry host queue cache */ | |
1655 | if (!IS_SOC(hpriv)) | |
1656 | cfg |= (1 << 18); /* enab early completion */ | |
1657 | } | |
616d4a98 ML |
1658 | if (hpriv->hp_flags & MV_HP_CUT_THROUGH) |
1659 | cfg |= (1 << 17); /* enab cut-thru (dis stor&forwrd) */ | |
c01e8a23 | 1660 | mv_bmdma_enable_iie(ap, !want_edma); |
000b344f ML |
1661 | |
1662 | if (IS_SOC(hpriv)) { | |
1663 | if (want_ncq) | |
1664 | mv_soc_led_blink_enable(ap); | |
1665 | else | |
1666 | mv_soc_led_blink_disable(ap); | |
1667 | } | |
e4e7b892 JG |
1668 | } |
1669 | ||
72109168 ML |
1670 | if (want_ncq) { |
1671 | cfg |= EDMA_CFG_NCQ; | |
1672 | pp->pp_flags |= MV_PP_FLAG_NCQ_EN; | |
00b81235 | 1673 | } |
72109168 | 1674 | |
cae5a29d | 1675 | writelfl(cfg, port_mmio + EDMA_CFG); |
e4e7b892 JG |
1676 | } |
1677 | ||
da2fa9ba ML |
1678 | static void mv_port_free_dma_mem(struct ata_port *ap) |
1679 | { | |
1680 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1681 | struct mv_port_priv *pp = ap->private_data; | |
eb73d558 | 1682 | int tag; |
da2fa9ba ML |
1683 | |
1684 | if (pp->crqb) { | |
1685 | dma_pool_free(hpriv->crqb_pool, pp->crqb, pp->crqb_dma); | |
1686 | pp->crqb = NULL; | |
1687 | } | |
1688 | if (pp->crpb) { | |
1689 | dma_pool_free(hpriv->crpb_pool, pp->crpb, pp->crpb_dma); | |
1690 | pp->crpb = NULL; | |
1691 | } | |
eb73d558 ML |
1692 | /* |
1693 | * For GEN_I, there's no NCQ, so we have only a single sg_tbl. | |
1694 | * For later hardware, we have one unique sg_tbl per NCQ tag. | |
1695 | */ | |
1696 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { | |
1697 | if (pp->sg_tbl[tag]) { | |
1698 | if (tag == 0 || !IS_GEN_I(hpriv)) | |
1699 | dma_pool_free(hpriv->sg_tbl_pool, | |
1700 | pp->sg_tbl[tag], | |
1701 | pp->sg_tbl_dma[tag]); | |
1702 | pp->sg_tbl[tag] = NULL; | |
1703 | } | |
da2fa9ba ML |
1704 | } |
1705 | } | |
1706 | ||
05b308e1 BR |
1707 | /** |
1708 | * mv_port_start - Port specific init/start routine. | |
1709 | * @ap: ATA channel to manipulate | |
1710 | * | |
1711 | * Allocate and point to DMA memory, init port private memory, | |
1712 | * zero indices. | |
1713 | * | |
1714 | * LOCKING: | |
1715 | * Inherited from caller. | |
1716 | */ | |
31961943 BR |
1717 | static int mv_port_start(struct ata_port *ap) |
1718 | { | |
cca3974e JG |
1719 | struct device *dev = ap->host->dev; |
1720 | struct mv_host_priv *hpriv = ap->host->private_data; | |
31961943 | 1721 | struct mv_port_priv *pp; |
933cb8e5 | 1722 | unsigned long flags; |
dde20207 | 1723 | int tag; |
31961943 | 1724 | |
24dc5f33 | 1725 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); |
6037d6bb | 1726 | if (!pp) |
24dc5f33 | 1727 | return -ENOMEM; |
da2fa9ba | 1728 | ap->private_data = pp; |
31961943 | 1729 | |
6ec76070 | 1730 | pp->crqb = dma_pool_zalloc(hpriv->crqb_pool, GFP_KERNEL, &pp->crqb_dma); |
da2fa9ba ML |
1731 | if (!pp->crqb) |
1732 | return -ENOMEM; | |
31961943 | 1733 | |
6ec76070 | 1734 | pp->crpb = dma_pool_zalloc(hpriv->crpb_pool, GFP_KERNEL, &pp->crpb_dma); |
da2fa9ba ML |
1735 | if (!pp->crpb) |
1736 | goto out_port_free_dma_mem; | |
31961943 | 1737 | |
3bd0a70e ML |
1738 | /* 6041/6081 Rev. "C0" (and newer) are okay with async notify */ |
1739 | if (hpriv->hp_flags & MV_HP_ERRATA_60X1C0) | |
1740 | ap->flags |= ATA_FLAG_AN; | |
eb73d558 ML |
1741 | /* |
1742 | * For GEN_I, there's no NCQ, so we only allocate a single sg_tbl. | |
1743 | * For later hardware, we need one unique sg_tbl per NCQ tag. | |
1744 | */ | |
1745 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { | |
1746 | if (tag == 0 || !IS_GEN_I(hpriv)) { | |
1747 | pp->sg_tbl[tag] = dma_pool_alloc(hpriv->sg_tbl_pool, | |
1748 | GFP_KERNEL, &pp->sg_tbl_dma[tag]); | |
1749 | if (!pp->sg_tbl[tag]) | |
1750 | goto out_port_free_dma_mem; | |
1751 | } else { | |
1752 | pp->sg_tbl[tag] = pp->sg_tbl[0]; | |
1753 | pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0]; | |
1754 | } | |
1755 | } | |
933cb8e5 ML |
1756 | |
1757 | spin_lock_irqsave(ap->lock, flags); | |
08da1759 | 1758 | mv_save_cached_regs(ap); |
66e57a2c | 1759 | mv_edma_cfg(ap, 0, 0); |
933cb8e5 ML |
1760 | spin_unlock_irqrestore(ap->lock, flags); |
1761 | ||
31961943 | 1762 | return 0; |
da2fa9ba ML |
1763 | |
1764 | out_port_free_dma_mem: | |
1765 | mv_port_free_dma_mem(ap); | |
1766 | return -ENOMEM; | |
31961943 BR |
1767 | } |
1768 | ||
05b308e1 BR |
1769 | /** |
1770 | * mv_port_stop - Port specific cleanup/stop routine. | |
1771 | * @ap: ATA channel to manipulate | |
1772 | * | |
1773 | * Stop DMA, cleanup port memory. | |
1774 | * | |
1775 | * LOCKING: | |
cca3974e | 1776 | * This routine uses the host lock to protect the DMA stop. |
05b308e1 | 1777 | */ |
31961943 BR |
1778 | static void mv_port_stop(struct ata_port *ap) |
1779 | { | |
933cb8e5 ML |
1780 | unsigned long flags; |
1781 | ||
1782 | spin_lock_irqsave(ap->lock, flags); | |
e12bef50 | 1783 | mv_stop_edma(ap); |
88e675e1 | 1784 | mv_enable_port_irqs(ap, 0); |
933cb8e5 | 1785 | spin_unlock_irqrestore(ap->lock, flags); |
da2fa9ba | 1786 | mv_port_free_dma_mem(ap); |
31961943 BR |
1787 | } |
1788 | ||
05b308e1 BR |
1789 | /** |
1790 | * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries | |
1791 | * @qc: queued command whose SG list to source from | |
1792 | * | |
1793 | * Populate the SG list and mark the last entry. | |
1794 | * | |
1795 | * LOCKING: | |
1796 | * Inherited from caller. | |
1797 | */ | |
6c08772e | 1798 | static void mv_fill_sg(struct ata_queued_cmd *qc) |
31961943 BR |
1799 | { |
1800 | struct mv_port_priv *pp = qc->ap->private_data; | |
972c26bd | 1801 | struct scatterlist *sg; |
3be6cbd7 | 1802 | struct mv_sg *mv_sg, *last_sg = NULL; |
ff2aeb1e | 1803 | unsigned int si; |
31961943 | 1804 | |
4e5b6260 | 1805 | mv_sg = pp->sg_tbl[qc->hw_tag]; |
ff2aeb1e | 1806 | for_each_sg(qc->sg, sg, qc->n_elem, si) { |
d88184fb JG |
1807 | dma_addr_t addr = sg_dma_address(sg); |
1808 | u32 sg_len = sg_dma_len(sg); | |
22374677 | 1809 | |
4007b493 OJ |
1810 | while (sg_len) { |
1811 | u32 offset = addr & 0xffff; | |
1812 | u32 len = sg_len; | |
22374677 | 1813 | |
32cd11a6 | 1814 | if (offset + len > 0x10000) |
4007b493 OJ |
1815 | len = 0x10000 - offset; |
1816 | ||
1817 | mv_sg->addr = cpu_to_le32(addr & 0xffffffff); | |
1818 | mv_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16); | |
6c08772e | 1819 | mv_sg->flags_size = cpu_to_le32(len & 0xffff); |
32cd11a6 | 1820 | mv_sg->reserved = 0; |
4007b493 OJ |
1821 | |
1822 | sg_len -= len; | |
1823 | addr += len; | |
1824 | ||
3be6cbd7 | 1825 | last_sg = mv_sg; |
4007b493 | 1826 | mv_sg++; |
4007b493 | 1827 | } |
31961943 | 1828 | } |
3be6cbd7 JG |
1829 | |
1830 | if (likely(last_sg)) | |
1831 | last_sg->flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL); | |
32cd11a6 | 1832 | mb(); /* ensure data structure is visible to the chipset */ |
31961943 BR |
1833 | } |
1834 | ||
5796d1c4 | 1835 | static void mv_crqb_pack_cmd(__le16 *cmdw, u8 data, u8 addr, unsigned last) |
31961943 | 1836 | { |
559eedad | 1837 | u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS | |
31961943 | 1838 | (last ? CRQB_CMD_LAST : 0); |
559eedad | 1839 | *cmdw = cpu_to_le16(tmp); |
31961943 BR |
1840 | } |
1841 | ||
da14265e ML |
1842 | /** |
1843 | * mv_sff_irq_clear - Clear hardware interrupt after DMA. | |
1844 | * @ap: Port associated with this ATA transaction. | |
1845 | * | |
1846 | * We need this only for ATAPI bmdma transactions, | |
1847 | * as otherwise we experience spurious interrupts | |
1848 | * after libata-sff handles the bmdma interrupts. | |
1849 | */ | |
1850 | static void mv_sff_irq_clear(struct ata_port *ap) | |
1851 | { | |
1852 | mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), ERR_IRQ); | |
1853 | } | |
1854 | ||
1855 | /** | |
1856 | * mv_check_atapi_dma - Filter ATAPI cmds which are unsuitable for DMA. | |
1857 | * @qc: queued command to check for chipset/DMA compatibility. | |
1858 | * | |
1859 | * The bmdma engines cannot handle speculative data sizes | |
1860 | * (bytecount under/over flow). So only allow DMA for | |
1861 | * data transfer commands with known data sizes. | |
1862 | * | |
1863 | * LOCKING: | |
1864 | * Inherited from caller. | |
1865 | */ | |
1866 | static int mv_check_atapi_dma(struct ata_queued_cmd *qc) | |
1867 | { | |
1868 | struct scsi_cmnd *scmd = qc->scsicmd; | |
1869 | ||
1870 | if (scmd) { | |
1871 | switch (scmd->cmnd[0]) { | |
1872 | case READ_6: | |
1873 | case READ_10: | |
1874 | case READ_12: | |
1875 | case WRITE_6: | |
1876 | case WRITE_10: | |
1877 | case WRITE_12: | |
1878 | case GPCMD_READ_CD: | |
1879 | case GPCMD_SEND_DVD_STRUCTURE: | |
1880 | case GPCMD_SEND_CUE_SHEET: | |
1881 | return 0; /* DMA is safe */ | |
1882 | } | |
1883 | } | |
1884 | return -EOPNOTSUPP; /* use PIO instead */ | |
1885 | } | |
1886 | ||
1887 | /** | |
1888 | * mv_bmdma_setup - Set up BMDMA transaction | |
1889 | * @qc: queued command to prepare DMA for. | |
1890 | * | |
1891 | * LOCKING: | |
1892 | * Inherited from caller. | |
1893 | */ | |
1894 | static void mv_bmdma_setup(struct ata_queued_cmd *qc) | |
1895 | { | |
1896 | struct ata_port *ap = qc->ap; | |
1897 | void __iomem *port_mmio = mv_ap_base(ap); | |
1898 | struct mv_port_priv *pp = ap->private_data; | |
1899 | ||
1900 | mv_fill_sg(qc); | |
1901 | ||
1902 | /* clear all DMA cmd bits */ | |
cae5a29d | 1903 | writel(0, port_mmio + BMDMA_CMD); |
da14265e ML |
1904 | |
1905 | /* load PRD table addr. */ | |
4e5b6260 | 1906 | writel((pp->sg_tbl_dma[qc->hw_tag] >> 16) >> 16, |
cae5a29d | 1907 | port_mmio + BMDMA_PRD_HIGH); |
4e5b6260 | 1908 | writelfl(pp->sg_tbl_dma[qc->hw_tag], |
cae5a29d | 1909 | port_mmio + BMDMA_PRD_LOW); |
da14265e ML |
1910 | |
1911 | /* issue r/w command */ | |
1912 | ap->ops->sff_exec_command(ap, &qc->tf); | |
1913 | } | |
1914 | ||
1915 | /** | |
1916 | * mv_bmdma_start - Start a BMDMA transaction | |
1917 | * @qc: queued command to start DMA on. | |
1918 | * | |
1919 | * LOCKING: | |
1920 | * Inherited from caller. | |
1921 | */ | |
1922 | static void mv_bmdma_start(struct ata_queued_cmd *qc) | |
1923 | { | |
1924 | struct ata_port *ap = qc->ap; | |
1925 | void __iomem *port_mmio = mv_ap_base(ap); | |
1926 | unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE); | |
1927 | u32 cmd = (rw ? 0 : ATA_DMA_WR) | ATA_DMA_START; | |
1928 | ||
1929 | /* start host DMA transaction */ | |
cae5a29d | 1930 | writelfl(cmd, port_mmio + BMDMA_CMD); |
da14265e ML |
1931 | } |
1932 | ||
1933 | /** | |
1934 | * mv_bmdma_stop - Stop BMDMA transfer | |
1935 | * @qc: queued command to stop DMA on. | |
1936 | * | |
1937 | * Clears the ATA_DMA_START flag in the bmdma control register | |
1938 | * | |
1939 | * LOCKING: | |
1940 | * Inherited from caller. | |
1941 | */ | |
44b73380 | 1942 | static void mv_bmdma_stop_ap(struct ata_port *ap) |
da14265e | 1943 | { |
da14265e ML |
1944 | void __iomem *port_mmio = mv_ap_base(ap); |
1945 | u32 cmd; | |
1946 | ||
1947 | /* clear start/stop bit */ | |
cae5a29d | 1948 | cmd = readl(port_mmio + BMDMA_CMD); |
44b73380 ML |
1949 | if (cmd & ATA_DMA_START) { |
1950 | cmd &= ~ATA_DMA_START; | |
1951 | writelfl(cmd, port_mmio + BMDMA_CMD); | |
1952 | ||
1953 | /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */ | |
1954 | ata_sff_dma_pause(ap); | |
1955 | } | |
1956 | } | |
da14265e | 1957 | |
44b73380 ML |
1958 | static void mv_bmdma_stop(struct ata_queued_cmd *qc) |
1959 | { | |
1960 | mv_bmdma_stop_ap(qc->ap); | |
da14265e ML |
1961 | } |
1962 | ||
1963 | /** | |
1964 | * mv_bmdma_status - Read BMDMA status | |
1965 | * @ap: port for which to retrieve DMA status. | |
1966 | * | |
1967 | * Read and return equivalent of the sff BMDMA status register. | |
1968 | * | |
1969 | * LOCKING: | |
1970 | * Inherited from caller. | |
1971 | */ | |
1972 | static u8 mv_bmdma_status(struct ata_port *ap) | |
1973 | { | |
1974 | void __iomem *port_mmio = mv_ap_base(ap); | |
1975 | u32 reg, status; | |
1976 | ||
1977 | /* | |
1978 | * Other bits are valid only if ATA_DMA_ACTIVE==0, | |
1979 | * and the ATA_DMA_INTR bit doesn't exist. | |
1980 | */ | |
cae5a29d | 1981 | reg = readl(port_mmio + BMDMA_STATUS); |
da14265e ML |
1982 | if (reg & ATA_DMA_ACTIVE) |
1983 | status = ATA_DMA_ACTIVE; | |
44b73380 | 1984 | else if (reg & ATA_DMA_ERR) |
da14265e | 1985 | status = (reg & ATA_DMA_ERR) | ATA_DMA_INTR; |
44b73380 ML |
1986 | else { |
1987 | /* | |
1988 | * Just because DMA_ACTIVE is 0 (DMA completed), | |
1989 | * this does _not_ mean the device is "done". | |
1990 | * So we should not yet be signalling ATA_DMA_INTR | |
1991 | * in some cases. Eg. DSM/TRIM, and perhaps others. | |
1992 | */ | |
1993 | mv_bmdma_stop_ap(ap); | |
1994 | if (ioread8(ap->ioaddr.altstatus_addr) & ATA_BUSY) | |
1995 | status = 0; | |
1996 | else | |
1997 | status = ATA_DMA_INTR; | |
1998 | } | |
da14265e ML |
1999 | return status; |
2000 | } | |
2001 | ||
299b3f8d ML |
2002 | static void mv_rw_multi_errata_sata24(struct ata_queued_cmd *qc) |
2003 | { | |
2004 | struct ata_taskfile *tf = &qc->tf; | |
2005 | /* | |
2006 | * Workaround for 88SX60x1 FEr SATA#24. | |
2007 | * | |
2008 | * Chip may corrupt WRITEs if multi_count >= 4kB. | |
2009 | * Note that READs are unaffected. | |
2010 | * | |
2011 | * It's not clear if this errata really means "4K bytes", | |
2012 | * or if it always happens for multi_count > 7 | |
2013 | * regardless of device sector_size. | |
2014 | * | |
2015 | * So, for safety, any write with multi_count > 7 | |
2016 | * gets converted here into a regular PIO write instead: | |
2017 | */ | |
2018 | if ((tf->flags & ATA_TFLAG_WRITE) && is_multi_taskfile(tf)) { | |
2019 | if (qc->dev->multi_count > 7) { | |
2020 | switch (tf->command) { | |
2021 | case ATA_CMD_WRITE_MULTI: | |
2022 | tf->command = ATA_CMD_PIO_WRITE; | |
2023 | break; | |
2024 | case ATA_CMD_WRITE_MULTI_FUA_EXT: | |
2025 | tf->flags &= ~ATA_TFLAG_FUA; /* ugh */ | |
2026 | /* fall through */ | |
2027 | case ATA_CMD_WRITE_MULTI_EXT: | |
2028 | tf->command = ATA_CMD_PIO_WRITE_EXT; | |
2029 | break; | |
2030 | } | |
2031 | } | |
2032 | } | |
2033 | } | |
2034 | ||
05b308e1 BR |
2035 | /** |
2036 | * mv_qc_prep - Host specific command preparation. | |
2037 | * @qc: queued command to prepare | |
2038 | * | |
2039 | * This routine simply redirects to the general purpose routine | |
2040 | * if command is not DMA. Else, it handles prep of the CRQB | |
2041 | * (command request block), does some sanity checking, and calls | |
2042 | * the SG load routine. | |
2043 | * | |
2044 | * LOCKING: | |
2045 | * Inherited from caller. | |
2046 | */ | |
31961943 BR |
2047 | static void mv_qc_prep(struct ata_queued_cmd *qc) |
2048 | { | |
2049 | struct ata_port *ap = qc->ap; | |
2050 | struct mv_port_priv *pp = ap->private_data; | |
e1469874 | 2051 | __le16 *cw; |
8d2b450d | 2052 | struct ata_taskfile *tf = &qc->tf; |
31961943 | 2053 | u16 flags = 0; |
a6432436 | 2054 | unsigned in_index; |
31961943 | 2055 | |
299b3f8d ML |
2056 | switch (tf->protocol) { |
2057 | case ATA_PROT_DMA: | |
44b73380 ML |
2058 | if (tf->command == ATA_CMD_DSM) |
2059 | return; | |
2060 | /* fall-thru */ | |
299b3f8d ML |
2061 | case ATA_PROT_NCQ: |
2062 | break; /* continue below */ | |
2063 | case ATA_PROT_PIO: | |
2064 | mv_rw_multi_errata_sata24(qc); | |
31961943 | 2065 | return; |
299b3f8d ML |
2066 | default: |
2067 | return; | |
2068 | } | |
20f733e7 | 2069 | |
31961943 BR |
2070 | /* Fill in command request block |
2071 | */ | |
8d2b450d | 2072 | if (!(tf->flags & ATA_TFLAG_WRITE)) |
31961943 | 2073 | flags |= CRQB_FLAG_READ; |
4e5b6260 JA |
2074 | WARN_ON(MV_MAX_Q_DEPTH <= qc->hw_tag); |
2075 | flags |= qc->hw_tag << CRQB_TAG_SHIFT; | |
e49856d8 | 2076 | flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT; |
31961943 | 2077 | |
bdd4ddde | 2078 | /* get current queue index from software */ |
fcfb1f77 | 2079 | in_index = pp->req_idx; |
a6432436 ML |
2080 | |
2081 | pp->crqb[in_index].sg_addr = | |
4e5b6260 | 2082 | cpu_to_le32(pp->sg_tbl_dma[qc->hw_tag] & 0xffffffff); |
a6432436 | 2083 | pp->crqb[in_index].sg_addr_hi = |
4e5b6260 | 2084 | cpu_to_le32((pp->sg_tbl_dma[qc->hw_tag] >> 16) >> 16); |
a6432436 | 2085 | pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags); |
31961943 | 2086 | |
a6432436 | 2087 | cw = &pp->crqb[in_index].ata_cmd[0]; |
31961943 | 2088 | |
25985edc | 2089 | /* Sadly, the CRQB cannot accommodate all registers--there are |
31961943 BR |
2090 | * only 11 bytes...so we must pick and choose required |
2091 | * registers based on the command. So, we drop feature and | |
2092 | * hob_feature for [RW] DMA commands, but they are needed for | |
cd12e1f7 ML |
2093 | * NCQ. NCQ will drop hob_nsect, which is not needed there |
2094 | * (nsect is used only for the tag; feat/hob_feat hold true nsect). | |
20f733e7 | 2095 | */ |
31961943 BR |
2096 | switch (tf->command) { |
2097 | case ATA_CMD_READ: | |
2098 | case ATA_CMD_READ_EXT: | |
2099 | case ATA_CMD_WRITE: | |
2100 | case ATA_CMD_WRITE_EXT: | |
c15d85c8 | 2101 | case ATA_CMD_WRITE_FUA_EXT: |
31961943 BR |
2102 | mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0); |
2103 | break; | |
31961943 BR |
2104 | case ATA_CMD_FPDMA_READ: |
2105 | case ATA_CMD_FPDMA_WRITE: | |
8b260248 | 2106 | mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0); |
31961943 BR |
2107 | mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0); |
2108 | break; | |
31961943 BR |
2109 | default: |
2110 | /* The only other commands EDMA supports in non-queued and | |
2111 | * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none | |
2112 | * of which are defined/used by Linux. If we get here, this | |
2113 | * driver needs work. | |
2114 | * | |
2115 | * FIXME: modify libata to give qc_prep a return value and | |
2116 | * return error here. | |
2117 | */ | |
2118 | BUG_ON(tf->command); | |
2119 | break; | |
2120 | } | |
2121 | mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0); | |
2122 | mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0); | |
2123 | mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0); | |
2124 | mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0); | |
2125 | mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0); | |
2126 | mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0); | |
2127 | mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0); | |
2128 | mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0); | |
2129 | mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */ | |
2130 | ||
e4e7b892 JG |
2131 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) |
2132 | return; | |
2133 | mv_fill_sg(qc); | |
2134 | } | |
2135 | ||
2136 | /** | |
2137 | * mv_qc_prep_iie - Host specific command preparation. | |
2138 | * @qc: queued command to prepare | |
2139 | * | |
2140 | * This routine simply redirects to the general purpose routine | |
2141 | * if command is not DMA. Else, it handles prep of the CRQB | |
2142 | * (command request block), does some sanity checking, and calls | |
2143 | * the SG load routine. | |
2144 | * | |
2145 | * LOCKING: | |
2146 | * Inherited from caller. | |
2147 | */ | |
2148 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc) | |
2149 | { | |
2150 | struct ata_port *ap = qc->ap; | |
2151 | struct mv_port_priv *pp = ap->private_data; | |
2152 | struct mv_crqb_iie *crqb; | |
8d2b450d | 2153 | struct ata_taskfile *tf = &qc->tf; |
a6432436 | 2154 | unsigned in_index; |
e4e7b892 JG |
2155 | u32 flags = 0; |
2156 | ||
8d2b450d ML |
2157 | if ((tf->protocol != ATA_PROT_DMA) && |
2158 | (tf->protocol != ATA_PROT_NCQ)) | |
e4e7b892 | 2159 | return; |
44b73380 ML |
2160 | if (tf->command == ATA_CMD_DSM) |
2161 | return; /* use bmdma for this */ | |
e4e7b892 | 2162 | |
e12bef50 | 2163 | /* Fill in Gen IIE command request block */ |
8d2b450d | 2164 | if (!(tf->flags & ATA_TFLAG_WRITE)) |
e4e7b892 JG |
2165 | flags |= CRQB_FLAG_READ; |
2166 | ||
4e5b6260 JA |
2167 | WARN_ON(MV_MAX_Q_DEPTH <= qc->hw_tag); |
2168 | flags |= qc->hw_tag << CRQB_TAG_SHIFT; | |
2169 | flags |= qc->hw_tag << CRQB_HOSTQ_SHIFT; | |
e49856d8 | 2170 | flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT; |
e4e7b892 | 2171 | |
bdd4ddde | 2172 | /* get current queue index from software */ |
fcfb1f77 | 2173 | in_index = pp->req_idx; |
a6432436 ML |
2174 | |
2175 | crqb = (struct mv_crqb_iie *) &pp->crqb[in_index]; | |
4e5b6260 JA |
2176 | crqb->addr = cpu_to_le32(pp->sg_tbl_dma[qc->hw_tag] & 0xffffffff); |
2177 | crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma[qc->hw_tag] >> 16) >> 16); | |
e4e7b892 JG |
2178 | crqb->flags = cpu_to_le32(flags); |
2179 | ||
e4e7b892 JG |
2180 | crqb->ata_cmd[0] = cpu_to_le32( |
2181 | (tf->command << 16) | | |
2182 | (tf->feature << 24) | |
2183 | ); | |
2184 | crqb->ata_cmd[1] = cpu_to_le32( | |
2185 | (tf->lbal << 0) | | |
2186 | (tf->lbam << 8) | | |
2187 | (tf->lbah << 16) | | |
2188 | (tf->device << 24) | |
2189 | ); | |
2190 | crqb->ata_cmd[2] = cpu_to_le32( | |
2191 | (tf->hob_lbal << 0) | | |
2192 | (tf->hob_lbam << 8) | | |
2193 | (tf->hob_lbah << 16) | | |
2194 | (tf->hob_feature << 24) | |
2195 | ); | |
2196 | crqb->ata_cmd[3] = cpu_to_le32( | |
2197 | (tf->nsect << 0) | | |
2198 | (tf->hob_nsect << 8) | |
2199 | ); | |
2200 | ||
2201 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) | |
31961943 | 2202 | return; |
31961943 BR |
2203 | mv_fill_sg(qc); |
2204 | } | |
2205 | ||
d16ab3f6 ML |
2206 | /** |
2207 | * mv_sff_check_status - fetch device status, if valid | |
2208 | * @ap: ATA port to fetch status from | |
2209 | * | |
2210 | * When using command issue via mv_qc_issue_fis(), | |
2211 | * the initial ATA_BUSY state does not show up in the | |
2212 | * ATA status (shadow) register. This can confuse libata! | |
2213 | * | |
2214 | * So we have a hook here to fake ATA_BUSY for that situation, | |
2215 | * until the first time a BUSY, DRQ, or ERR bit is seen. | |
2216 | * | |
2217 | * The rest of the time, it simply returns the ATA status register. | |
2218 | */ | |
2219 | static u8 mv_sff_check_status(struct ata_port *ap) | |
2220 | { | |
2221 | u8 stat = ioread8(ap->ioaddr.status_addr); | |
2222 | struct mv_port_priv *pp = ap->private_data; | |
2223 | ||
2224 | if (pp->pp_flags & MV_PP_FLAG_FAKE_ATA_BUSY) { | |
2225 | if (stat & (ATA_BUSY | ATA_DRQ | ATA_ERR)) | |
2226 | pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY; | |
2227 | else | |
2228 | stat = ATA_BUSY; | |
2229 | } | |
2230 | return stat; | |
2231 | } | |
2232 | ||
70f8b79c ML |
2233 | /** |
2234 | * mv_send_fis - Send a FIS, using the "Vendor-Unique FIS" register | |
2235 | * @fis: fis to be sent | |
2236 | * @nwords: number of 32-bit words in the fis | |
2237 | */ | |
2238 | static unsigned int mv_send_fis(struct ata_port *ap, u32 *fis, int nwords) | |
2239 | { | |
2240 | void __iomem *port_mmio = mv_ap_base(ap); | |
2241 | u32 ifctl, old_ifctl, ifstat; | |
2242 | int i, timeout = 200, final_word = nwords - 1; | |
2243 | ||
2244 | /* Initiate FIS transmission mode */ | |
cae5a29d | 2245 | old_ifctl = readl(port_mmio + SATA_IFCTL); |
70f8b79c | 2246 | ifctl = 0x100 | (old_ifctl & 0xf); |
cae5a29d | 2247 | writelfl(ifctl, port_mmio + SATA_IFCTL); |
70f8b79c ML |
2248 | |
2249 | /* Send all words of the FIS except for the final word */ | |
2250 | for (i = 0; i < final_word; ++i) | |
cae5a29d | 2251 | writel(fis[i], port_mmio + VENDOR_UNIQUE_FIS); |
70f8b79c ML |
2252 | |
2253 | /* Flag end-of-transmission, and then send the final word */ | |
cae5a29d ML |
2254 | writelfl(ifctl | 0x200, port_mmio + SATA_IFCTL); |
2255 | writelfl(fis[final_word], port_mmio + VENDOR_UNIQUE_FIS); | |
70f8b79c ML |
2256 | |
2257 | /* | |
2258 | * Wait for FIS transmission to complete. | |
2259 | * This typically takes just a single iteration. | |
2260 | */ | |
2261 | do { | |
cae5a29d | 2262 | ifstat = readl(port_mmio + SATA_IFSTAT); |
70f8b79c ML |
2263 | } while (!(ifstat & 0x1000) && --timeout); |
2264 | ||
2265 | /* Restore original port configuration */ | |
cae5a29d | 2266 | writelfl(old_ifctl, port_mmio + SATA_IFCTL); |
70f8b79c ML |
2267 | |
2268 | /* See if it worked */ | |
2269 | if ((ifstat & 0x3000) != 0x1000) { | |
a9a79dfe JP |
2270 | ata_port_warn(ap, "%s transmission error, ifstat=%08x\n", |
2271 | __func__, ifstat); | |
70f8b79c ML |
2272 | return AC_ERR_OTHER; |
2273 | } | |
2274 | return 0; | |
2275 | } | |
2276 | ||
2277 | /** | |
2278 | * mv_qc_issue_fis - Issue a command directly as a FIS | |
2279 | * @qc: queued command to start | |
2280 | * | |
2281 | * Note that the ATA shadow registers are not updated | |
2282 | * after command issue, so the device will appear "READY" | |
2283 | * if polled, even while it is BUSY processing the command. | |
2284 | * | |
2285 | * So we use a status hook to fake ATA_BUSY until the drive changes state. | |
2286 | * | |
2287 | * Note: we don't get updated shadow regs on *completion* | |
2288 | * of non-data commands. So avoid sending them via this function, | |
2289 | * as they will appear to have completed immediately. | |
2290 | * | |
2291 | * GEN_IIE has special registers that we could get the result tf from, | |
2292 | * but earlier chipsets do not. For now, we ignore those registers. | |
2293 | */ | |
2294 | static unsigned int mv_qc_issue_fis(struct ata_queued_cmd *qc) | |
2295 | { | |
2296 | struct ata_port *ap = qc->ap; | |
2297 | struct mv_port_priv *pp = ap->private_data; | |
2298 | struct ata_link *link = qc->dev->link; | |
2299 | u32 fis[5]; | |
2300 | int err = 0; | |
2301 | ||
2302 | ata_tf_to_fis(&qc->tf, link->pmp, 1, (void *)fis); | |
4c4a90fd | 2303 | err = mv_send_fis(ap, fis, ARRAY_SIZE(fis)); |
70f8b79c ML |
2304 | if (err) |
2305 | return err; | |
2306 | ||
2307 | switch (qc->tf.protocol) { | |
2308 | case ATAPI_PROT_PIO: | |
2309 | pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY; | |
2310 | /* fall through */ | |
2311 | case ATAPI_PROT_NODATA: | |
2312 | ap->hsm_task_state = HSM_ST_FIRST; | |
2313 | break; | |
2314 | case ATA_PROT_PIO: | |
2315 | pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY; | |
2316 | if (qc->tf.flags & ATA_TFLAG_WRITE) | |
2317 | ap->hsm_task_state = HSM_ST_FIRST; | |
2318 | else | |
2319 | ap->hsm_task_state = HSM_ST; | |
2320 | break; | |
2321 | default: | |
2322 | ap->hsm_task_state = HSM_ST_LAST; | |
2323 | break; | |
2324 | } | |
2325 | ||
2326 | if (qc->tf.flags & ATA_TFLAG_POLLING) | |
ea3c6450 | 2327 | ata_sff_queue_pio_task(link, 0); |
70f8b79c ML |
2328 | return 0; |
2329 | } | |
2330 | ||
05b308e1 BR |
2331 | /** |
2332 | * mv_qc_issue - Initiate a command to the host | |
2333 | * @qc: queued command to start | |
2334 | * | |
2335 | * This routine simply redirects to the general purpose routine | |
2336 | * if command is not DMA. Else, it sanity checks our local | |
2337 | * caches of the request producer/consumer indices then enables | |
2338 | * DMA and bumps the request producer index. | |
2339 | * | |
2340 | * LOCKING: | |
2341 | * Inherited from caller. | |
2342 | */ | |
9a3d9eb0 | 2343 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc) |
31961943 | 2344 | { |
f48765cc | 2345 | static int limit_warnings = 10; |
c5d3e45a JG |
2346 | struct ata_port *ap = qc->ap; |
2347 | void __iomem *port_mmio = mv_ap_base(ap); | |
2348 | struct mv_port_priv *pp = ap->private_data; | |
bdd4ddde | 2349 | u32 in_index; |
42ed893d | 2350 | unsigned int port_irqs; |
f48765cc | 2351 | |
d16ab3f6 ML |
2352 | pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY; /* paranoia */ |
2353 | ||
f48765cc ML |
2354 | switch (qc->tf.protocol) { |
2355 | case ATA_PROT_DMA: | |
44b73380 ML |
2356 | if (qc->tf.command == ATA_CMD_DSM) { |
2357 | if (!ap->ops->bmdma_setup) /* no bmdma on GEN_I */ | |
2358 | return AC_ERR_OTHER; | |
2359 | break; /* use bmdma for this */ | |
2360 | } | |
2361 | /* fall thru */ | |
f48765cc ML |
2362 | case ATA_PROT_NCQ: |
2363 | mv_start_edma(ap, port_mmio, pp, qc->tf.protocol); | |
2364 | pp->req_idx = (pp->req_idx + 1) & MV_MAX_Q_DEPTH_MASK; | |
2365 | in_index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT; | |
2366 | ||
2367 | /* Write the request in pointer to kick the EDMA to life */ | |
2368 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index, | |
cae5a29d | 2369 | port_mmio + EDMA_REQ_Q_IN_PTR); |
f48765cc | 2370 | return 0; |
31961943 | 2371 | |
f48765cc | 2372 | case ATA_PROT_PIO: |
c6112bd8 ML |
2373 | /* |
2374 | * Errata SATA#16, SATA#24: warn if multiple DRQs expected. | |
2375 | * | |
2376 | * Someday, we might implement special polling workarounds | |
2377 | * for these, but it all seems rather unnecessary since we | |
2378 | * normally use only DMA for commands which transfer more | |
2379 | * than a single block of data. | |
2380 | * | |
2381 | * Much of the time, this could just work regardless. | |
2382 | * So for now, just log the incident, and allow the attempt. | |
2383 | */ | |
c7843e8f | 2384 | if (limit_warnings > 0 && (qc->nbytes / qc->sect_size) > 1) { |
c6112bd8 | 2385 | --limit_warnings; |
a9a79dfe JP |
2386 | ata_link_warn(qc->dev->link, DRV_NAME |
2387 | ": attempting PIO w/multiple DRQ: " | |
2388 | "this may fail due to h/w errata\n"); | |
c6112bd8 | 2389 | } |
05b83605 | 2390 | /* fall through */ |
42ed893d | 2391 | case ATA_PROT_NODATA: |
f48765cc | 2392 | case ATAPI_PROT_PIO: |
42ed893d ML |
2393 | case ATAPI_PROT_NODATA: |
2394 | if (ap->flags & ATA_FLAG_PIO_POLLING) | |
2395 | qc->tf.flags |= ATA_TFLAG_POLLING; | |
2396 | break; | |
31961943 | 2397 | } |
42ed893d ML |
2398 | |
2399 | if (qc->tf.flags & ATA_TFLAG_POLLING) | |
2400 | port_irqs = ERR_IRQ; /* mask device interrupt when polling */ | |
2401 | else | |
2402 | port_irqs = ERR_IRQ | DONE_IRQ; /* unmask all interrupts */ | |
2403 | ||
2404 | /* | |
2405 | * We're about to send a non-EDMA capable command to the | |
2406 | * port. Turn off EDMA so there won't be problems accessing | |
2407 | * shadow block, etc registers. | |
2408 | */ | |
2409 | mv_stop_edma(ap); | |
2410 | mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), port_irqs); | |
2411 | mv_pmp_select(ap, qc->dev->link->pmp); | |
70f8b79c ML |
2412 | |
2413 | if (qc->tf.command == ATA_CMD_READ_LOG_EXT) { | |
2414 | struct mv_host_priv *hpriv = ap->host->private_data; | |
2415 | /* | |
2416 | * Workaround for 88SX60x1 FEr SATA#25 (part 2). | |
40f21b11 | 2417 | * |
70f8b79c ML |
2418 | * After any NCQ error, the READ_LOG_EXT command |
2419 | * from libata-eh *must* use mv_qc_issue_fis(). | |
2420 | * Otherwise it might fail, due to chip errata. | |
2421 | * | |
2422 | * Rather than special-case it, we'll just *always* | |
2423 | * use this method here for READ_LOG_EXT, making for | |
2424 | * easier testing. | |
2425 | */ | |
2426 | if (IS_GEN_II(hpriv)) | |
2427 | return mv_qc_issue_fis(qc); | |
2428 | } | |
360ff783 | 2429 | return ata_bmdma_qc_issue(qc); |
31961943 BR |
2430 | } |
2431 | ||
8f767f8a ML |
2432 | static struct ata_queued_cmd *mv_get_active_qc(struct ata_port *ap) |
2433 | { | |
2434 | struct mv_port_priv *pp = ap->private_data; | |
2435 | struct ata_queued_cmd *qc; | |
2436 | ||
2437 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) | |
2438 | return NULL; | |
2439 | qc = ata_qc_from_tag(ap, ap->link.active_tag); | |
3e4ec344 TH |
2440 | if (qc && !(qc->tf.flags & ATA_TFLAG_POLLING)) |
2441 | return qc; | |
2442 | return NULL; | |
8f767f8a ML |
2443 | } |
2444 | ||
29d187bb ML |
2445 | static void mv_pmp_error_handler(struct ata_port *ap) |
2446 | { | |
2447 | unsigned int pmp, pmp_map; | |
2448 | struct mv_port_priv *pp = ap->private_data; | |
2449 | ||
2450 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) { | |
2451 | /* | |
2452 | * Perform NCQ error analysis on failed PMPs | |
2453 | * before we freeze the port entirely. | |
2454 | * | |
2455 | * The failed PMPs are marked earlier by mv_pmp_eh_prep(). | |
2456 | */ | |
2457 | pmp_map = pp->delayed_eh_pmp_map; | |
2458 | pp->pp_flags &= ~MV_PP_FLAG_DELAYED_EH; | |
2459 | for (pmp = 0; pmp_map != 0; pmp++) { | |
2460 | unsigned int this_pmp = (1 << pmp); | |
2461 | if (pmp_map & this_pmp) { | |
2462 | struct ata_link *link = &ap->pmp_link[pmp]; | |
2463 | pmp_map &= ~this_pmp; | |
2464 | ata_eh_analyze_ncq_error(link); | |
2465 | } | |
2466 | } | |
2467 | ata_port_freeze(ap); | |
2468 | } | |
2469 | sata_pmp_error_handler(ap); | |
2470 | } | |
2471 | ||
4c299ca3 ML |
2472 | static unsigned int mv_get_err_pmp_map(struct ata_port *ap) |
2473 | { | |
2474 | void __iomem *port_mmio = mv_ap_base(ap); | |
2475 | ||
cae5a29d | 2476 | return readl(port_mmio + SATA_TESTCTL) >> 16; |
4c299ca3 ML |
2477 | } |
2478 | ||
4c299ca3 ML |
2479 | static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map) |
2480 | { | |
4c299ca3 ML |
2481 | unsigned int pmp; |
2482 | ||
2483 | /* | |
2484 | * Initialize EH info for PMPs which saw device errors | |
2485 | */ | |
4c299ca3 ML |
2486 | for (pmp = 0; pmp_map != 0; pmp++) { |
2487 | unsigned int this_pmp = (1 << pmp); | |
2488 | if (pmp_map & this_pmp) { | |
2489 | struct ata_link *link = &ap->pmp_link[pmp]; | |
14d7045c | 2490 | struct ata_eh_info *ehi = &link->eh_info; |
4c299ca3 ML |
2491 | |
2492 | pmp_map &= ~this_pmp; | |
4c299ca3 ML |
2493 | ata_ehi_clear_desc(ehi); |
2494 | ata_ehi_push_desc(ehi, "dev err"); | |
2495 | ehi->err_mask |= AC_ERR_DEV; | |
2496 | ehi->action |= ATA_EH_RESET; | |
2497 | ata_link_abort(link); | |
2498 | } | |
2499 | } | |
2500 | } | |
2501 | ||
06aaca3f ML |
2502 | static int mv_req_q_empty(struct ata_port *ap) |
2503 | { | |
2504 | void __iomem *port_mmio = mv_ap_base(ap); | |
2505 | u32 in_ptr, out_ptr; | |
2506 | ||
cae5a29d | 2507 | in_ptr = (readl(port_mmio + EDMA_REQ_Q_IN_PTR) |
06aaca3f | 2508 | >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; |
cae5a29d | 2509 | out_ptr = (readl(port_mmio + EDMA_REQ_Q_OUT_PTR) |
06aaca3f ML |
2510 | >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; |
2511 | return (in_ptr == out_ptr); /* 1 == queue_is_empty */ | |
2512 | } | |
2513 | ||
4c299ca3 ML |
2514 | static int mv_handle_fbs_ncq_dev_err(struct ata_port *ap) |
2515 | { | |
2516 | struct mv_port_priv *pp = ap->private_data; | |
2517 | int failed_links; | |
2518 | unsigned int old_map, new_map; | |
2519 | ||
2520 | /* | |
2521 | * Device error during FBS+NCQ operation: | |
2522 | * | |
2523 | * Set a port flag to prevent further I/O being enqueued. | |
2524 | * Leave the EDMA running to drain outstanding commands from this port. | |
2525 | * Perform the post-mortem/EH only when all responses are complete. | |
2526 | * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.2). | |
2527 | */ | |
2528 | if (!(pp->pp_flags & MV_PP_FLAG_DELAYED_EH)) { | |
2529 | pp->pp_flags |= MV_PP_FLAG_DELAYED_EH; | |
2530 | pp->delayed_eh_pmp_map = 0; | |
2531 | } | |
2532 | old_map = pp->delayed_eh_pmp_map; | |
2533 | new_map = old_map | mv_get_err_pmp_map(ap); | |
2534 | ||
2535 | if (old_map != new_map) { | |
2536 | pp->delayed_eh_pmp_map = new_map; | |
2537 | mv_pmp_eh_prep(ap, new_map & ~old_map); | |
2538 | } | |
c46938cc | 2539 | failed_links = hweight16(new_map); |
4c299ca3 | 2540 | |
a9a79dfe | 2541 | ata_port_info(ap, |
e3ed8939 | 2542 | "%s: pmp_map=%04x qc_map=%04llx failed_links=%d nr_active_links=%d\n", |
a9a79dfe JP |
2543 | __func__, pp->delayed_eh_pmp_map, |
2544 | ap->qc_active, failed_links, | |
2545 | ap->nr_active_links); | |
4c299ca3 | 2546 | |
06aaca3f | 2547 | if (ap->nr_active_links <= failed_links && mv_req_q_empty(ap)) { |
4c299ca3 ML |
2548 | mv_process_crpb_entries(ap, pp); |
2549 | mv_stop_edma(ap); | |
2550 | mv_eh_freeze(ap); | |
a9a79dfe | 2551 | ata_port_info(ap, "%s: done\n", __func__); |
4c299ca3 ML |
2552 | return 1; /* handled */ |
2553 | } | |
a9a79dfe | 2554 | ata_port_info(ap, "%s: waiting\n", __func__); |
4c299ca3 ML |
2555 | return 1; /* handled */ |
2556 | } | |
2557 | ||
2558 | static int mv_handle_fbs_non_ncq_dev_err(struct ata_port *ap) | |
2559 | { | |
2560 | /* | |
2561 | * Possible future enhancement: | |
2562 | * | |
2563 | * FBS+non-NCQ operation is not yet implemented. | |
2564 | * See related notes in mv_edma_cfg(). | |
2565 | * | |
2566 | * Device error during FBS+non-NCQ operation: | |
2567 | * | |
2568 | * We need to snapshot the shadow registers for each failed command. | |
2569 | * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.3). | |
2570 | */ | |
2571 | return 0; /* not handled */ | |
2572 | } | |
2573 | ||
2574 | static int mv_handle_dev_err(struct ata_port *ap, u32 edma_err_cause) | |
2575 | { | |
2576 | struct mv_port_priv *pp = ap->private_data; | |
2577 | ||
2578 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) | |
2579 | return 0; /* EDMA was not active: not handled */ | |
2580 | if (!(pp->pp_flags & MV_PP_FLAG_FBS_EN)) | |
2581 | return 0; /* FBS was not active: not handled */ | |
2582 | ||
2583 | if (!(edma_err_cause & EDMA_ERR_DEV)) | |
2584 | return 0; /* non DEV error: not handled */ | |
2585 | edma_err_cause &= ~EDMA_ERR_IRQ_TRANSIENT; | |
2586 | if (edma_err_cause & ~(EDMA_ERR_DEV | EDMA_ERR_SELF_DIS)) | |
2587 | return 0; /* other problems: not handled */ | |
2588 | ||
2589 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) { | |
2590 | /* | |
2591 | * EDMA should NOT have self-disabled for this case. | |
2592 | * If it did, then something is wrong elsewhere, | |
2593 | * and we cannot handle it here. | |
2594 | */ | |
2595 | if (edma_err_cause & EDMA_ERR_SELF_DIS) { | |
a9a79dfe JP |
2596 | ata_port_warn(ap, "%s: err_cause=0x%x pp_flags=0x%x\n", |
2597 | __func__, edma_err_cause, pp->pp_flags); | |
4c299ca3 ML |
2598 | return 0; /* not handled */ |
2599 | } | |
2600 | return mv_handle_fbs_ncq_dev_err(ap); | |
2601 | } else { | |
2602 | /* | |
2603 | * EDMA should have self-disabled for this case. | |
2604 | * If it did not, then something is wrong elsewhere, | |
2605 | * and we cannot handle it here. | |
2606 | */ | |
2607 | if (!(edma_err_cause & EDMA_ERR_SELF_DIS)) { | |
a9a79dfe JP |
2608 | ata_port_warn(ap, "%s: err_cause=0x%x pp_flags=0x%x\n", |
2609 | __func__, edma_err_cause, pp->pp_flags); | |
4c299ca3 ML |
2610 | return 0; /* not handled */ |
2611 | } | |
2612 | return mv_handle_fbs_non_ncq_dev_err(ap); | |
2613 | } | |
2614 | return 0; /* not handled */ | |
2615 | } | |
2616 | ||
a9010329 | 2617 | static void mv_unexpected_intr(struct ata_port *ap, int edma_was_enabled) |
8f767f8a | 2618 | { |
8f767f8a | 2619 | struct ata_eh_info *ehi = &ap->link.eh_info; |
a9010329 | 2620 | char *when = "idle"; |
8f767f8a | 2621 | |
8f767f8a | 2622 | ata_ehi_clear_desc(ehi); |
3e4ec344 | 2623 | if (edma_was_enabled) { |
a9010329 | 2624 | when = "EDMA enabled"; |
8f767f8a ML |
2625 | } else { |
2626 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag); | |
2627 | if (qc && (qc->tf.flags & ATA_TFLAG_POLLING)) | |
a9010329 | 2628 | when = "polling"; |
8f767f8a | 2629 | } |
a9010329 | 2630 | ata_ehi_push_desc(ehi, "unexpected device interrupt while %s", when); |
8f767f8a ML |
2631 | ehi->err_mask |= AC_ERR_OTHER; |
2632 | ehi->action |= ATA_EH_RESET; | |
2633 | ata_port_freeze(ap); | |
2634 | } | |
2635 | ||
05b308e1 BR |
2636 | /** |
2637 | * mv_err_intr - Handle error interrupts on the port | |
2638 | * @ap: ATA channel to manipulate | |
2639 | * | |
8d07379d ML |
2640 | * Most cases require a full reset of the chip's state machine, |
2641 | * which also performs a COMRESET. | |
2642 | * Also, if the port disabled DMA, update our cached copy to match. | |
05b308e1 BR |
2643 | * |
2644 | * LOCKING: | |
2645 | * Inherited from caller. | |
2646 | */ | |
37b9046a | 2647 | static void mv_err_intr(struct ata_port *ap) |
31961943 BR |
2648 | { |
2649 | void __iomem *port_mmio = mv_ap_base(ap); | |
bdd4ddde | 2650 | u32 edma_err_cause, eh_freeze_mask, serr = 0; |
e4006077 | 2651 | u32 fis_cause = 0; |
bdd4ddde JG |
2652 | struct mv_port_priv *pp = ap->private_data; |
2653 | struct mv_host_priv *hpriv = ap->host->private_data; | |
bdd4ddde | 2654 | unsigned int action = 0, err_mask = 0; |
9af5c9c9 | 2655 | struct ata_eh_info *ehi = &ap->link.eh_info; |
37b9046a ML |
2656 | struct ata_queued_cmd *qc; |
2657 | int abort = 0; | |
20f733e7 | 2658 | |
8d07379d | 2659 | /* |
37b9046a | 2660 | * Read and clear the SError and err_cause bits. |
e4006077 ML |
2661 | * For GenIIe, if EDMA_ERR_TRANS_IRQ_7 is set, we also must read/clear |
2662 | * the FIS_IRQ_CAUSE register before clearing edma_err_cause. | |
8d07379d | 2663 | */ |
37b9046a ML |
2664 | sata_scr_read(&ap->link, SCR_ERROR, &serr); |
2665 | sata_scr_write_flush(&ap->link, SCR_ERROR, serr); | |
2666 | ||
cae5a29d | 2667 | edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE); |
e4006077 | 2668 | if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) { |
cae5a29d ML |
2669 | fis_cause = readl(port_mmio + FIS_IRQ_CAUSE); |
2670 | writelfl(~fis_cause, port_mmio + FIS_IRQ_CAUSE); | |
e4006077 | 2671 | } |
cae5a29d | 2672 | writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE); |
bdd4ddde | 2673 | |
4c299ca3 ML |
2674 | if (edma_err_cause & EDMA_ERR_DEV) { |
2675 | /* | |
2676 | * Device errors during FIS-based switching operation | |
2677 | * require special handling. | |
2678 | */ | |
2679 | if (mv_handle_dev_err(ap, edma_err_cause)) | |
2680 | return; | |
2681 | } | |
2682 | ||
37b9046a ML |
2683 | qc = mv_get_active_qc(ap); |
2684 | ata_ehi_clear_desc(ehi); | |
2685 | ata_ehi_push_desc(ehi, "edma_err_cause=%08x pp_flags=%08x", | |
2686 | edma_err_cause, pp->pp_flags); | |
e4006077 | 2687 | |
c443c500 | 2688 | if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) { |
e4006077 | 2689 | ata_ehi_push_desc(ehi, "fis_cause=%08x", fis_cause); |
cae5a29d | 2690 | if (fis_cause & FIS_IRQ_CAUSE_AN) { |
c443c500 ML |
2691 | u32 ec = edma_err_cause & |
2692 | ~(EDMA_ERR_TRANS_IRQ_7 | EDMA_ERR_IRQ_TRANSIENT); | |
2693 | sata_async_notification(ap); | |
2694 | if (!ec) | |
2695 | return; /* Just an AN; no need for the nukes */ | |
2696 | ata_ehi_push_desc(ehi, "SDB notify"); | |
2697 | } | |
2698 | } | |
bdd4ddde | 2699 | /* |
352fab70 | 2700 | * All generations share these EDMA error cause bits: |
bdd4ddde | 2701 | */ |
37b9046a | 2702 | if (edma_err_cause & EDMA_ERR_DEV) { |
bdd4ddde | 2703 | err_mask |= AC_ERR_DEV; |
37b9046a ML |
2704 | action |= ATA_EH_RESET; |
2705 | ata_ehi_push_desc(ehi, "dev error"); | |
2706 | } | |
bdd4ddde | 2707 | if (edma_err_cause & (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR | |
6c1153e0 | 2708 | EDMA_ERR_CRQB_PAR | EDMA_ERR_CRPB_PAR | |
bdd4ddde JG |
2709 | EDMA_ERR_INTRL_PAR)) { |
2710 | err_mask |= AC_ERR_ATA_BUS; | |
cf480626 | 2711 | action |= ATA_EH_RESET; |
b64bbc39 | 2712 | ata_ehi_push_desc(ehi, "parity error"); |
bdd4ddde JG |
2713 | } |
2714 | if (edma_err_cause & (EDMA_ERR_DEV_DCON | EDMA_ERR_DEV_CON)) { | |
2715 | ata_ehi_hotplugged(ehi); | |
2716 | ata_ehi_push_desc(ehi, edma_err_cause & EDMA_ERR_DEV_DCON ? | |
b64bbc39 | 2717 | "dev disconnect" : "dev connect"); |
cf480626 | 2718 | action |= ATA_EH_RESET; |
bdd4ddde JG |
2719 | } |
2720 | ||
352fab70 ML |
2721 | /* |
2722 | * Gen-I has a different SELF_DIS bit, | |
2723 | * different FREEZE bits, and no SERR bit: | |
2724 | */ | |
ee9ccdf7 | 2725 | if (IS_GEN_I(hpriv)) { |
bdd4ddde | 2726 | eh_freeze_mask = EDMA_EH_FREEZE_5; |
bdd4ddde | 2727 | if (edma_err_cause & EDMA_ERR_SELF_DIS_5) { |
bdd4ddde | 2728 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
b64bbc39 | 2729 | ata_ehi_push_desc(ehi, "EDMA self-disable"); |
bdd4ddde JG |
2730 | } |
2731 | } else { | |
2732 | eh_freeze_mask = EDMA_EH_FREEZE; | |
bdd4ddde | 2733 | if (edma_err_cause & EDMA_ERR_SELF_DIS) { |
bdd4ddde | 2734 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
b64bbc39 | 2735 | ata_ehi_push_desc(ehi, "EDMA self-disable"); |
bdd4ddde | 2736 | } |
bdd4ddde | 2737 | if (edma_err_cause & EDMA_ERR_SERR) { |
8d07379d ML |
2738 | ata_ehi_push_desc(ehi, "SError=%08x", serr); |
2739 | err_mask |= AC_ERR_ATA_BUS; | |
cf480626 | 2740 | action |= ATA_EH_RESET; |
bdd4ddde | 2741 | } |
afb0edd9 | 2742 | } |
20f733e7 | 2743 | |
bdd4ddde JG |
2744 | if (!err_mask) { |
2745 | err_mask = AC_ERR_OTHER; | |
cf480626 | 2746 | action |= ATA_EH_RESET; |
bdd4ddde JG |
2747 | } |
2748 | ||
2749 | ehi->serror |= serr; | |
2750 | ehi->action |= action; | |
2751 | ||
2752 | if (qc) | |
2753 | qc->err_mask |= err_mask; | |
2754 | else | |
2755 | ehi->err_mask |= err_mask; | |
2756 | ||
37b9046a ML |
2757 | if (err_mask == AC_ERR_DEV) { |
2758 | /* | |
2759 | * Cannot do ata_port_freeze() here, | |
2760 | * because it would kill PIO access, | |
2761 | * which is needed for further diagnosis. | |
2762 | */ | |
2763 | mv_eh_freeze(ap); | |
2764 | abort = 1; | |
2765 | } else if (edma_err_cause & eh_freeze_mask) { | |
2766 | /* | |
2767 | * Note to self: ata_port_freeze() calls ata_port_abort() | |
2768 | */ | |
bdd4ddde | 2769 | ata_port_freeze(ap); |
37b9046a ML |
2770 | } else { |
2771 | abort = 1; | |
2772 | } | |
2773 | ||
2774 | if (abort) { | |
2775 | if (qc) | |
2776 | ata_link_abort(qc->dev->link); | |
2777 | else | |
2778 | ata_port_abort(ap); | |
2779 | } | |
bdd4ddde JG |
2780 | } |
2781 | ||
1aadf5c3 | 2782 | static bool mv_process_crpb_response(struct ata_port *ap, |
fcfb1f77 ML |
2783 | struct mv_crpb *response, unsigned int tag, int ncq_enabled) |
2784 | { | |
752e386c TH |
2785 | u8 ata_status; |
2786 | u16 edma_status = le16_to_cpu(response->flags); | |
752e386c TH |
2787 | |
2788 | /* | |
2789 | * edma_status from a response queue entry: | |
2790 | * LSB is from EDMA_ERR_IRQ_CAUSE (non-NCQ only). | |
2791 | * MSB is saved ATA status from command completion. | |
2792 | */ | |
2793 | if (!ncq_enabled) { | |
2794 | u8 err_cause = edma_status & 0xff & ~EDMA_ERR_DEV; | |
2795 | if (err_cause) { | |
2796 | /* | |
2797 | * Error will be seen/handled by | |
2798 | * mv_err_intr(). So do nothing at all here. | |
2799 | */ | |
1aadf5c3 | 2800 | return false; |
752e386c | 2801 | } |
fcfb1f77 | 2802 | } |
752e386c TH |
2803 | ata_status = edma_status >> CRPB_FLAG_STATUS_SHIFT; |
2804 | if (!ac_err_mask(ata_status)) | |
1aadf5c3 | 2805 | return true; |
752e386c | 2806 | /* else: leave it for mv_err_intr() */ |
1aadf5c3 | 2807 | return false; |
fcfb1f77 ML |
2808 | } |
2809 | ||
2810 | static void mv_process_crpb_entries(struct ata_port *ap, struct mv_port_priv *pp) | |
bdd4ddde JG |
2811 | { |
2812 | void __iomem *port_mmio = mv_ap_base(ap); | |
2813 | struct mv_host_priv *hpriv = ap->host->private_data; | |
fcfb1f77 | 2814 | u32 in_index; |
bdd4ddde | 2815 | bool work_done = false; |
1aadf5c3 | 2816 | u32 done_mask = 0; |
fcfb1f77 | 2817 | int ncq_enabled = (pp->pp_flags & MV_PP_FLAG_NCQ_EN); |
bdd4ddde | 2818 | |
fcfb1f77 | 2819 | /* Get the hardware queue position index */ |
cae5a29d | 2820 | in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR) |
bdd4ddde JG |
2821 | >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; |
2822 | ||
fcfb1f77 ML |
2823 | /* Process new responses from since the last time we looked */ |
2824 | while (in_index != pp->resp_idx) { | |
6c1153e0 | 2825 | unsigned int tag; |
fcfb1f77 | 2826 | struct mv_crpb *response = &pp->crpb[pp->resp_idx]; |
bdd4ddde | 2827 | |
fcfb1f77 | 2828 | pp->resp_idx = (pp->resp_idx + 1) & MV_MAX_Q_DEPTH_MASK; |
bdd4ddde | 2829 | |
fcfb1f77 ML |
2830 | if (IS_GEN_I(hpriv)) { |
2831 | /* 50xx: no NCQ, only one command active at a time */ | |
9af5c9c9 | 2832 | tag = ap->link.active_tag; |
fcfb1f77 ML |
2833 | } else { |
2834 | /* Gen II/IIE: get command tag from CRPB entry */ | |
2835 | tag = le16_to_cpu(response->id) & 0x1f; | |
bdd4ddde | 2836 | } |
1aadf5c3 TH |
2837 | if (mv_process_crpb_response(ap, response, tag, ncq_enabled)) |
2838 | done_mask |= 1 << tag; | |
bdd4ddde | 2839 | work_done = true; |
bdd4ddde JG |
2840 | } |
2841 | ||
1aadf5c3 TH |
2842 | if (work_done) { |
2843 | ata_qc_complete_multiple(ap, ap->qc_active ^ done_mask); | |
2844 | ||
2845 | /* Update the software queue position index in hardware */ | |
bdd4ddde | 2846 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | |
fcfb1f77 | 2847 | (pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT), |
cae5a29d | 2848 | port_mmio + EDMA_RSP_Q_OUT_PTR); |
1aadf5c3 | 2849 | } |
20f733e7 BR |
2850 | } |
2851 | ||
a9010329 ML |
2852 | static void mv_port_intr(struct ata_port *ap, u32 port_cause) |
2853 | { | |
2854 | struct mv_port_priv *pp; | |
2855 | int edma_was_enabled; | |
2856 | ||
a9010329 ML |
2857 | /* |
2858 | * Grab a snapshot of the EDMA_EN flag setting, | |
2859 | * so that we have a consistent view for this port, | |
2860 | * even if something we call of our routines changes it. | |
2861 | */ | |
2862 | pp = ap->private_data; | |
2863 | edma_was_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN); | |
2864 | /* | |
2865 | * Process completed CRPB response(s) before other events. | |
2866 | */ | |
2867 | if (edma_was_enabled && (port_cause & DONE_IRQ)) { | |
2868 | mv_process_crpb_entries(ap, pp); | |
4c299ca3 ML |
2869 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) |
2870 | mv_handle_fbs_ncq_dev_err(ap); | |
a9010329 ML |
2871 | } |
2872 | /* | |
2873 | * Handle chip-reported errors, or continue on to handle PIO. | |
2874 | */ | |
2875 | if (unlikely(port_cause & ERR_IRQ)) { | |
2876 | mv_err_intr(ap); | |
2877 | } else if (!edma_was_enabled) { | |
2878 | struct ata_queued_cmd *qc = mv_get_active_qc(ap); | |
2879 | if (qc) | |
c3b28894 | 2880 | ata_bmdma_port_intr(ap, qc); |
a9010329 ML |
2881 | else |
2882 | mv_unexpected_intr(ap, edma_was_enabled); | |
2883 | } | |
2884 | } | |
2885 | ||
05b308e1 BR |
2886 | /** |
2887 | * mv_host_intr - Handle all interrupts on the given host controller | |
cca3974e | 2888 | * @host: host specific structure |
7368f919 | 2889 | * @main_irq_cause: Main interrupt cause register for the chip. |
05b308e1 BR |
2890 | * |
2891 | * LOCKING: | |
2892 | * Inherited from caller. | |
2893 | */ | |
7368f919 | 2894 | static int mv_host_intr(struct ata_host *host, u32 main_irq_cause) |
20f733e7 | 2895 | { |
f351b2d6 | 2896 | struct mv_host_priv *hpriv = host->private_data; |
eabd5eb1 | 2897 | void __iomem *mmio = hpriv->base, *hc_mmio; |
a3718c1f | 2898 | unsigned int handled = 0, port; |
20f733e7 | 2899 | |
2b748a0a ML |
2900 | /* If asserted, clear the "all ports" IRQ coalescing bit */ |
2901 | if (main_irq_cause & ALL_PORTS_COAL_DONE) | |
cae5a29d | 2902 | writel(~ALL_PORTS_COAL_IRQ, mmio + IRQ_COAL_CAUSE); |
2b748a0a | 2903 | |
a3718c1f | 2904 | for (port = 0; port < hpriv->n_ports; port++) { |
cca3974e | 2905 | struct ata_port *ap = host->ports[port]; |
eabd5eb1 ML |
2906 | unsigned int p, shift, hardport, port_cause; |
2907 | ||
a3718c1f | 2908 | MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport); |
a3718c1f | 2909 | /* |
eabd5eb1 ML |
2910 | * Each hc within the host has its own hc_irq_cause register, |
2911 | * where the interrupting ports bits get ack'd. | |
a3718c1f | 2912 | */ |
eabd5eb1 ML |
2913 | if (hardport == 0) { /* first port on this hc ? */ |
2914 | u32 hc_cause = (main_irq_cause >> shift) & HC0_IRQ_PEND; | |
2915 | u32 port_mask, ack_irqs; | |
2916 | /* | |
2917 | * Skip this entire hc if nothing pending for any ports | |
2918 | */ | |
2919 | if (!hc_cause) { | |
2920 | port += MV_PORTS_PER_HC - 1; | |
2921 | continue; | |
2922 | } | |
2923 | /* | |
2924 | * We don't need/want to read the hc_irq_cause register, | |
2925 | * because doing so hurts performance, and | |
2926 | * main_irq_cause already gives us everything we need. | |
2927 | * | |
2928 | * But we do have to *write* to the hc_irq_cause to ack | |
2929 | * the ports that we are handling this time through. | |
2930 | * | |
2931 | * This requires that we create a bitmap for those | |
2932 | * ports which interrupted us, and use that bitmap | |
2933 | * to ack (only) those ports via hc_irq_cause. | |
2934 | */ | |
2935 | ack_irqs = 0; | |
2b748a0a ML |
2936 | if (hc_cause & PORTS_0_3_COAL_DONE) |
2937 | ack_irqs = HC_COAL_IRQ; | |
eabd5eb1 ML |
2938 | for (p = 0; p < MV_PORTS_PER_HC; ++p) { |
2939 | if ((port + p) >= hpriv->n_ports) | |
2940 | break; | |
2941 | port_mask = (DONE_IRQ | ERR_IRQ) << (p * 2); | |
2942 | if (hc_cause & port_mask) | |
2943 | ack_irqs |= (DMA_IRQ | DEV_IRQ) << p; | |
2944 | } | |
a3718c1f | 2945 | hc_mmio = mv_hc_base_from_port(mmio, port); |
cae5a29d | 2946 | writelfl(~ack_irqs, hc_mmio + HC_IRQ_CAUSE); |
a3718c1f ML |
2947 | handled = 1; |
2948 | } | |
8f767f8a | 2949 | /* |
a9010329 | 2950 | * Handle interrupts signalled for this port: |
8f767f8a | 2951 | */ |
a9010329 ML |
2952 | port_cause = (main_irq_cause >> shift) & (DONE_IRQ | ERR_IRQ); |
2953 | if (port_cause) | |
2954 | mv_port_intr(ap, port_cause); | |
20f733e7 | 2955 | } |
a3718c1f | 2956 | return handled; |
20f733e7 BR |
2957 | } |
2958 | ||
a3718c1f | 2959 | static int mv_pci_error(struct ata_host *host, void __iomem *mmio) |
bdd4ddde | 2960 | { |
02a121da | 2961 | struct mv_host_priv *hpriv = host->private_data; |
bdd4ddde JG |
2962 | struct ata_port *ap; |
2963 | struct ata_queued_cmd *qc; | |
2964 | struct ata_eh_info *ehi; | |
2965 | unsigned int i, err_mask, printed = 0; | |
2966 | u32 err_cause; | |
2967 | ||
cae5a29d | 2968 | err_cause = readl(mmio + hpriv->irq_cause_offset); |
bdd4ddde | 2969 | |
a44fec1f | 2970 | dev_err(host->dev, "PCI ERROR; PCI IRQ cause=0x%08x\n", err_cause); |
bdd4ddde JG |
2971 | |
2972 | DPRINTK("All regs @ PCI error\n"); | |
2973 | mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev)); | |
2974 | ||
cae5a29d | 2975 | writelfl(0, mmio + hpriv->irq_cause_offset); |
bdd4ddde JG |
2976 | |
2977 | for (i = 0; i < host->n_ports; i++) { | |
2978 | ap = host->ports[i]; | |
936fd732 | 2979 | if (!ata_link_offline(&ap->link)) { |
9af5c9c9 | 2980 | ehi = &ap->link.eh_info; |
bdd4ddde JG |
2981 | ata_ehi_clear_desc(ehi); |
2982 | if (!printed++) | |
2983 | ata_ehi_push_desc(ehi, | |
2984 | "PCI err cause 0x%08x", err_cause); | |
2985 | err_mask = AC_ERR_HOST_BUS; | |
cf480626 | 2986 | ehi->action = ATA_EH_RESET; |
9af5c9c9 | 2987 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
bdd4ddde JG |
2988 | if (qc) |
2989 | qc->err_mask |= err_mask; | |
2990 | else | |
2991 | ehi->err_mask |= err_mask; | |
2992 | ||
2993 | ata_port_freeze(ap); | |
2994 | } | |
2995 | } | |
a3718c1f | 2996 | return 1; /* handled */ |
bdd4ddde JG |
2997 | } |
2998 | ||
05b308e1 | 2999 | /** |
c5d3e45a | 3000 | * mv_interrupt - Main interrupt event handler |
05b308e1 BR |
3001 | * @irq: unused |
3002 | * @dev_instance: private data; in this case the host structure | |
05b308e1 BR |
3003 | * |
3004 | * Read the read only register to determine if any host | |
3005 | * controllers have pending interrupts. If so, call lower level | |
3006 | * routine to handle. Also check for PCI errors which are only | |
3007 | * reported here. | |
3008 | * | |
8b260248 | 3009 | * LOCKING: |
cca3974e | 3010 | * This routine holds the host lock while processing pending |
05b308e1 BR |
3011 | * interrupts. |
3012 | */ | |
7d12e780 | 3013 | static irqreturn_t mv_interrupt(int irq, void *dev_instance) |
20f733e7 | 3014 | { |
cca3974e | 3015 | struct ata_host *host = dev_instance; |
f351b2d6 | 3016 | struct mv_host_priv *hpriv = host->private_data; |
a3718c1f | 3017 | unsigned int handled = 0; |
6d3c30ef | 3018 | int using_msi = hpriv->hp_flags & MV_HP_FLAG_MSI; |
96e2c487 | 3019 | u32 main_irq_cause, pending_irqs; |
20f733e7 | 3020 | |
646a4da5 | 3021 | spin_lock(&host->lock); |
6d3c30ef ML |
3022 | |
3023 | /* for MSI: block new interrupts while in here */ | |
3024 | if (using_msi) | |
2b748a0a | 3025 | mv_write_main_irq_mask(0, hpriv); |
6d3c30ef | 3026 | |
7368f919 | 3027 | main_irq_cause = readl(hpriv->main_irq_cause_addr); |
96e2c487 | 3028 | pending_irqs = main_irq_cause & hpriv->main_irq_mask; |
352fab70 ML |
3029 | /* |
3030 | * Deal with cases where we either have nothing pending, or have read | |
3031 | * a bogus register value which can indicate HW removal or PCI fault. | |
20f733e7 | 3032 | */ |
a44253d2 | 3033 | if (pending_irqs && main_irq_cause != 0xffffffffU) { |
1f398472 | 3034 | if (unlikely((pending_irqs & PCI_ERR) && !IS_SOC(hpriv))) |
a3718c1f ML |
3035 | handled = mv_pci_error(host, hpriv->base); |
3036 | else | |
a44253d2 | 3037 | handled = mv_host_intr(host, pending_irqs); |
bdd4ddde | 3038 | } |
6d3c30ef ML |
3039 | |
3040 | /* for MSI: unmask; interrupt cause bits will retrigger now */ | |
3041 | if (using_msi) | |
2b748a0a | 3042 | mv_write_main_irq_mask(hpriv->main_irq_mask, hpriv); |
6d3c30ef | 3043 | |
9d51af7b ML |
3044 | spin_unlock(&host->lock); |
3045 | ||
20f733e7 BR |
3046 | return IRQ_RETVAL(handled); |
3047 | } | |
3048 | ||
c9d39130 JG |
3049 | static unsigned int mv5_scr_offset(unsigned int sc_reg_in) |
3050 | { | |
3051 | unsigned int ofs; | |
3052 | ||
3053 | switch (sc_reg_in) { | |
3054 | case SCR_STATUS: | |
3055 | case SCR_ERROR: | |
3056 | case SCR_CONTROL: | |
3057 | ofs = sc_reg_in * sizeof(u32); | |
3058 | break; | |
3059 | default: | |
3060 | ofs = 0xffffffffU; | |
3061 | break; | |
3062 | } | |
3063 | return ofs; | |
3064 | } | |
3065 | ||
82ef04fb | 3066 | static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val) |
c9d39130 | 3067 | { |
82ef04fb | 3068 | struct mv_host_priv *hpriv = link->ap->host->private_data; |
f351b2d6 | 3069 | void __iomem *mmio = hpriv->base; |
82ef04fb | 3070 | void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no); |
c9d39130 JG |
3071 | unsigned int ofs = mv5_scr_offset(sc_reg_in); |
3072 | ||
da3dbb17 TH |
3073 | if (ofs != 0xffffffffU) { |
3074 | *val = readl(addr + ofs); | |
3075 | return 0; | |
3076 | } else | |
3077 | return -EINVAL; | |
c9d39130 JG |
3078 | } |
3079 | ||
82ef04fb | 3080 | static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val) |
c9d39130 | 3081 | { |
82ef04fb | 3082 | struct mv_host_priv *hpriv = link->ap->host->private_data; |
f351b2d6 | 3083 | void __iomem *mmio = hpriv->base; |
82ef04fb | 3084 | void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no); |
c9d39130 JG |
3085 | unsigned int ofs = mv5_scr_offset(sc_reg_in); |
3086 | ||
da3dbb17 | 3087 | if (ofs != 0xffffffffU) { |
0d5ff566 | 3088 | writelfl(val, addr + ofs); |
da3dbb17 TH |
3089 | return 0; |
3090 | } else | |
3091 | return -EINVAL; | |
c9d39130 JG |
3092 | } |
3093 | ||
7bb3c529 | 3094 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio) |
522479fb | 3095 | { |
7bb3c529 | 3096 | struct pci_dev *pdev = to_pci_dev(host->dev); |
522479fb JG |
3097 | int early_5080; |
3098 | ||
44c10138 | 3099 | early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0); |
522479fb JG |
3100 | |
3101 | if (!early_5080) { | |
3102 | u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
3103 | tmp |= (1 << 0); | |
3104 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
3105 | } | |
3106 | ||
7bb3c529 | 3107 | mv_reset_pci_bus(host, mmio); |
522479fb JG |
3108 | } |
3109 | ||
3110 | static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) | |
3111 | { | |
cae5a29d | 3112 | writel(0x0fcfffff, mmio + FLASH_CTL); |
522479fb JG |
3113 | } |
3114 | ||
47c2b677 | 3115 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, |
ba3fe8fb JG |
3116 | void __iomem *mmio) |
3117 | { | |
c9d39130 JG |
3118 | void __iomem *phy_mmio = mv5_phy_base(mmio, idx); |
3119 | u32 tmp; | |
3120 | ||
3121 | tmp = readl(phy_mmio + MV5_PHY_MODE); | |
3122 | ||
3123 | hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */ | |
3124 | hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */ | |
ba3fe8fb JG |
3125 | } |
3126 | ||
47c2b677 | 3127 | static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio) |
ba3fe8fb | 3128 | { |
522479fb JG |
3129 | u32 tmp; |
3130 | ||
cae5a29d | 3131 | writel(0, mmio + GPIO_PORT_CTL); |
522479fb JG |
3132 | |
3133 | /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */ | |
3134 | ||
3135 | tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
3136 | tmp |= ~(1 << 0); | |
3137 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
ba3fe8fb JG |
3138 | } |
3139 | ||
2a47ce06 JG |
3140 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
3141 | unsigned int port) | |
bca1c4eb | 3142 | { |
c9d39130 JG |
3143 | void __iomem *phy_mmio = mv5_phy_base(mmio, port); |
3144 | const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5); | |
3145 | u32 tmp; | |
3146 | int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0); | |
3147 | ||
3148 | if (fix_apm_sq) { | |
cae5a29d | 3149 | tmp = readl(phy_mmio + MV5_LTMODE); |
c9d39130 | 3150 | tmp |= (1 << 19); |
cae5a29d | 3151 | writel(tmp, phy_mmio + MV5_LTMODE); |
c9d39130 | 3152 | |
cae5a29d | 3153 | tmp = readl(phy_mmio + MV5_PHY_CTL); |
c9d39130 JG |
3154 | tmp &= ~0x3; |
3155 | tmp |= 0x1; | |
cae5a29d | 3156 | writel(tmp, phy_mmio + MV5_PHY_CTL); |
c9d39130 JG |
3157 | } |
3158 | ||
3159 | tmp = readl(phy_mmio + MV5_PHY_MODE); | |
3160 | tmp &= ~mask; | |
3161 | tmp |= hpriv->signal[port].pre; | |
3162 | tmp |= hpriv->signal[port].amps; | |
3163 | writel(tmp, phy_mmio + MV5_PHY_MODE); | |
bca1c4eb JG |
3164 | } |
3165 | ||
c9d39130 JG |
3166 | |
3167 | #undef ZERO | |
3168 | #define ZERO(reg) writel(0, port_mmio + (reg)) | |
3169 | static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio, | |
3170 | unsigned int port) | |
3171 | { | |
3172 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
3173 | ||
e12bef50 | 3174 | mv_reset_channel(hpriv, mmio, port); |
c9d39130 JG |
3175 | |
3176 | ZERO(0x028); /* command */ | |
cae5a29d | 3177 | writel(0x11f, port_mmio + EDMA_CFG); |
c9d39130 JG |
3178 | ZERO(0x004); /* timer */ |
3179 | ZERO(0x008); /* irq err cause */ | |
3180 | ZERO(0x00c); /* irq err mask */ | |
3181 | ZERO(0x010); /* rq bah */ | |
3182 | ZERO(0x014); /* rq inp */ | |
3183 | ZERO(0x018); /* rq outp */ | |
3184 | ZERO(0x01c); /* respq bah */ | |
3185 | ZERO(0x024); /* respq outp */ | |
3186 | ZERO(0x020); /* respq inp */ | |
3187 | ZERO(0x02c); /* test control */ | |
cae5a29d | 3188 | writel(0xbc, port_mmio + EDMA_IORDY_TMOUT); |
c9d39130 JG |
3189 | } |
3190 | #undef ZERO | |
3191 | ||
3192 | #define ZERO(reg) writel(0, hc_mmio + (reg)) | |
3193 | static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio, | |
3194 | unsigned int hc) | |
47c2b677 | 3195 | { |
c9d39130 JG |
3196 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); |
3197 | u32 tmp; | |
3198 | ||
3199 | ZERO(0x00c); | |
3200 | ZERO(0x010); | |
3201 | ZERO(0x014); | |
3202 | ZERO(0x018); | |
3203 | ||
3204 | tmp = readl(hc_mmio + 0x20); | |
3205 | tmp &= 0x1c1c1c1c; | |
3206 | tmp |= 0x03030303; | |
3207 | writel(tmp, hc_mmio + 0x20); | |
3208 | } | |
3209 | #undef ZERO | |
3210 | ||
3211 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, | |
3212 | unsigned int n_hc) | |
3213 | { | |
3214 | unsigned int hc, port; | |
3215 | ||
3216 | for (hc = 0; hc < n_hc; hc++) { | |
3217 | for (port = 0; port < MV_PORTS_PER_HC; port++) | |
3218 | mv5_reset_hc_port(hpriv, mmio, | |
3219 | (hc * MV_PORTS_PER_HC) + port); | |
3220 | ||
3221 | mv5_reset_one_hc(hpriv, mmio, hc); | |
3222 | } | |
3223 | ||
3224 | return 0; | |
47c2b677 JG |
3225 | } |
3226 | ||
101ffae2 JG |
3227 | #undef ZERO |
3228 | #define ZERO(reg) writel(0, mmio + (reg)) | |
7bb3c529 | 3229 | static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio) |
101ffae2 | 3230 | { |
02a121da | 3231 | struct mv_host_priv *hpriv = host->private_data; |
101ffae2 JG |
3232 | u32 tmp; |
3233 | ||
cae5a29d | 3234 | tmp = readl(mmio + MV_PCI_MODE); |
101ffae2 | 3235 | tmp &= 0xff00ffff; |
cae5a29d | 3236 | writel(tmp, mmio + MV_PCI_MODE); |
101ffae2 JG |
3237 | |
3238 | ZERO(MV_PCI_DISC_TIMER); | |
3239 | ZERO(MV_PCI_MSI_TRIGGER); | |
cae5a29d | 3240 | writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT); |
101ffae2 | 3241 | ZERO(MV_PCI_SERR_MASK); |
cae5a29d ML |
3242 | ZERO(hpriv->irq_cause_offset); |
3243 | ZERO(hpriv->irq_mask_offset); | |
101ffae2 JG |
3244 | ZERO(MV_PCI_ERR_LOW_ADDRESS); |
3245 | ZERO(MV_PCI_ERR_HIGH_ADDRESS); | |
3246 | ZERO(MV_PCI_ERR_ATTRIBUTE); | |
3247 | ZERO(MV_PCI_ERR_COMMAND); | |
3248 | } | |
3249 | #undef ZERO | |
3250 | ||
3251 | static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) | |
3252 | { | |
3253 | u32 tmp; | |
3254 | ||
3255 | mv5_reset_flash(hpriv, mmio); | |
3256 | ||
cae5a29d | 3257 | tmp = readl(mmio + GPIO_PORT_CTL); |
101ffae2 JG |
3258 | tmp &= 0x3; |
3259 | tmp |= (1 << 5) | (1 << 6); | |
cae5a29d | 3260 | writel(tmp, mmio + GPIO_PORT_CTL); |
101ffae2 JG |
3261 | } |
3262 | ||
3263 | /** | |
3264 | * mv6_reset_hc - Perform the 6xxx global soft reset | |
3265 | * @mmio: base address of the HBA | |
3266 | * | |
3267 | * This routine only applies to 6xxx parts. | |
3268 | * | |
3269 | * LOCKING: | |
3270 | * Inherited from caller. | |
3271 | */ | |
c9d39130 JG |
3272 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
3273 | unsigned int n_hc) | |
101ffae2 | 3274 | { |
cae5a29d | 3275 | void __iomem *reg = mmio + PCI_MAIN_CMD_STS; |
101ffae2 JG |
3276 | int i, rc = 0; |
3277 | u32 t; | |
3278 | ||
3279 | /* Following procedure defined in PCI "main command and status | |
3280 | * register" table. | |
3281 | */ | |
3282 | t = readl(reg); | |
3283 | writel(t | STOP_PCI_MASTER, reg); | |
3284 | ||
3285 | for (i = 0; i < 1000; i++) { | |
3286 | udelay(1); | |
3287 | t = readl(reg); | |
2dcb407e | 3288 | if (PCI_MASTER_EMPTY & t) |
101ffae2 | 3289 | break; |
101ffae2 JG |
3290 | } |
3291 | if (!(PCI_MASTER_EMPTY & t)) { | |
3292 | printk(KERN_ERR DRV_NAME ": PCI master won't flush\n"); | |
3293 | rc = 1; | |
3294 | goto done; | |
3295 | } | |
3296 | ||
3297 | /* set reset */ | |
3298 | i = 5; | |
3299 | do { | |
3300 | writel(t | GLOB_SFT_RST, reg); | |
3301 | t = readl(reg); | |
3302 | udelay(1); | |
3303 | } while (!(GLOB_SFT_RST & t) && (i-- > 0)); | |
3304 | ||
3305 | if (!(GLOB_SFT_RST & t)) { | |
3306 | printk(KERN_ERR DRV_NAME ": can't set global reset\n"); | |
3307 | rc = 1; | |
3308 | goto done; | |
3309 | } | |
3310 | ||
3311 | /* clear reset and *reenable the PCI master* (not mentioned in spec) */ | |
3312 | i = 5; | |
3313 | do { | |
3314 | writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg); | |
3315 | t = readl(reg); | |
3316 | udelay(1); | |
3317 | } while ((GLOB_SFT_RST & t) && (i-- > 0)); | |
3318 | ||
3319 | if (GLOB_SFT_RST & t) { | |
3320 | printk(KERN_ERR DRV_NAME ": can't clear global reset\n"); | |
3321 | rc = 1; | |
3322 | } | |
3323 | done: | |
3324 | return rc; | |
3325 | } | |
3326 | ||
47c2b677 | 3327 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, |
ba3fe8fb JG |
3328 | void __iomem *mmio) |
3329 | { | |
3330 | void __iomem *port_mmio; | |
3331 | u32 tmp; | |
3332 | ||
cae5a29d | 3333 | tmp = readl(mmio + RESET_CFG); |
ba3fe8fb | 3334 | if ((tmp & (1 << 0)) == 0) { |
47c2b677 | 3335 | hpriv->signal[idx].amps = 0x7 << 8; |
ba3fe8fb JG |
3336 | hpriv->signal[idx].pre = 0x1 << 5; |
3337 | return; | |
3338 | } | |
3339 | ||
3340 | port_mmio = mv_port_base(mmio, idx); | |
3341 | tmp = readl(port_mmio + PHY_MODE2); | |
3342 | ||
3343 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ | |
3344 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ | |
3345 | } | |
3346 | ||
47c2b677 | 3347 | static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio) |
ba3fe8fb | 3348 | { |
cae5a29d | 3349 | writel(0x00000060, mmio + GPIO_PORT_CTL); |
ba3fe8fb JG |
3350 | } |
3351 | ||
c9d39130 | 3352 | static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
2a47ce06 | 3353 | unsigned int port) |
bca1c4eb | 3354 | { |
c9d39130 JG |
3355 | void __iomem *port_mmio = mv_port_base(mmio, port); |
3356 | ||
bca1c4eb | 3357 | u32 hp_flags = hpriv->hp_flags; |
47c2b677 JG |
3358 | int fix_phy_mode2 = |
3359 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); | |
bca1c4eb | 3360 | int fix_phy_mode4 = |
47c2b677 | 3361 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); |
8c30a8b9 | 3362 | u32 m2, m3; |
47c2b677 JG |
3363 | |
3364 | if (fix_phy_mode2) { | |
3365 | m2 = readl(port_mmio + PHY_MODE2); | |
3366 | m2 &= ~(1 << 16); | |
3367 | m2 |= (1 << 31); | |
3368 | writel(m2, port_mmio + PHY_MODE2); | |
3369 | ||
3370 | udelay(200); | |
3371 | ||
3372 | m2 = readl(port_mmio + PHY_MODE2); | |
3373 | m2 &= ~((1 << 16) | (1 << 31)); | |
3374 | writel(m2, port_mmio + PHY_MODE2); | |
3375 | ||
3376 | udelay(200); | |
3377 | } | |
3378 | ||
8c30a8b9 ML |
3379 | /* |
3380 | * Gen-II/IIe PHY_MODE3 errata RM#2: | |
3381 | * Achieves better receiver noise performance than the h/w default: | |
3382 | */ | |
3383 | m3 = readl(port_mmio + PHY_MODE3); | |
3384 | m3 = (m3 & 0x1f) | (0x5555601 << 5); | |
bca1c4eb | 3385 | |
0388a8c0 ML |
3386 | /* Guideline 88F5182 (GL# SATA-S11) */ |
3387 | if (IS_SOC(hpriv)) | |
3388 | m3 &= ~0x1c; | |
3389 | ||
bca1c4eb | 3390 | if (fix_phy_mode4) { |
ba069e37 ML |
3391 | u32 m4 = readl(port_mmio + PHY_MODE4); |
3392 | /* | |
3393 | * Enforce reserved-bit restrictions on GenIIe devices only. | |
3394 | * For earlier chipsets, force only the internal config field | |
3395 | * (workaround for errata FEr SATA#10 part 1). | |
3396 | */ | |
8c30a8b9 | 3397 | if (IS_GEN_IIE(hpriv)) |
ba069e37 ML |
3398 | m4 = (m4 & ~PHY_MODE4_RSVD_ZEROS) | PHY_MODE4_RSVD_ONES; |
3399 | else | |
3400 | m4 = (m4 & ~PHY_MODE4_CFG_MASK) | PHY_MODE4_CFG_VALUE; | |
8c30a8b9 | 3401 | writel(m4, port_mmio + PHY_MODE4); |
bca1c4eb | 3402 | } |
b406c7a6 ML |
3403 | /* |
3404 | * Workaround for 60x1-B2 errata SATA#13: | |
3405 | * Any write to PHY_MODE4 (above) may corrupt PHY_MODE3, | |
3406 | * so we must always rewrite PHY_MODE3 after PHY_MODE4. | |
ba68460b | 3407 | * Or ensure we use writelfl() when writing PHY_MODE4. |
b406c7a6 ML |
3408 | */ |
3409 | writel(m3, port_mmio + PHY_MODE3); | |
bca1c4eb JG |
3410 | |
3411 | /* Revert values of pre-emphasis and signal amps to the saved ones */ | |
3412 | m2 = readl(port_mmio + PHY_MODE2); | |
3413 | ||
3414 | m2 &= ~MV_M2_PREAMP_MASK; | |
2a47ce06 JG |
3415 | m2 |= hpriv->signal[port].amps; |
3416 | m2 |= hpriv->signal[port].pre; | |
47c2b677 | 3417 | m2 &= ~(1 << 16); |
bca1c4eb | 3418 | |
e4e7b892 JG |
3419 | /* according to mvSata 3.6.1, some IIE values are fixed */ |
3420 | if (IS_GEN_IIE(hpriv)) { | |
3421 | m2 &= ~0xC30FF01F; | |
3422 | m2 |= 0x0000900F; | |
3423 | } | |
3424 | ||
bca1c4eb JG |
3425 | writel(m2, port_mmio + PHY_MODE2); |
3426 | } | |
3427 | ||
f351b2d6 SB |
3428 | /* TODO: use the generic LED interface to configure the SATA Presence */ |
3429 | /* & Acitivy LEDs on the board */ | |
3430 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, | |
3431 | void __iomem *mmio) | |
3432 | { | |
3433 | return; | |
3434 | } | |
3435 | ||
3436 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, | |
3437 | void __iomem *mmio) | |
3438 | { | |
3439 | void __iomem *port_mmio; | |
3440 | u32 tmp; | |
3441 | ||
3442 | port_mmio = mv_port_base(mmio, idx); | |
3443 | tmp = readl(port_mmio + PHY_MODE2); | |
3444 | ||
3445 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ | |
3446 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ | |
3447 | } | |
3448 | ||
3449 | #undef ZERO | |
3450 | #define ZERO(reg) writel(0, port_mmio + (reg)) | |
3451 | static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv, | |
3452 | void __iomem *mmio, unsigned int port) | |
3453 | { | |
3454 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
3455 | ||
e12bef50 | 3456 | mv_reset_channel(hpriv, mmio, port); |
f351b2d6 SB |
3457 | |
3458 | ZERO(0x028); /* command */ | |
cae5a29d | 3459 | writel(0x101f, port_mmio + EDMA_CFG); |
f351b2d6 SB |
3460 | ZERO(0x004); /* timer */ |
3461 | ZERO(0x008); /* irq err cause */ | |
3462 | ZERO(0x00c); /* irq err mask */ | |
3463 | ZERO(0x010); /* rq bah */ | |
3464 | ZERO(0x014); /* rq inp */ | |
3465 | ZERO(0x018); /* rq outp */ | |
3466 | ZERO(0x01c); /* respq bah */ | |
3467 | ZERO(0x024); /* respq outp */ | |
3468 | ZERO(0x020); /* respq inp */ | |
3469 | ZERO(0x02c); /* test control */ | |
d7b0c143 | 3470 | writel(0x800, port_mmio + EDMA_IORDY_TMOUT); |
f351b2d6 SB |
3471 | } |
3472 | ||
3473 | #undef ZERO | |
3474 | ||
3475 | #define ZERO(reg) writel(0, hc_mmio + (reg)) | |
3476 | static void mv_soc_reset_one_hc(struct mv_host_priv *hpriv, | |
3477 | void __iomem *mmio) | |
3478 | { | |
3479 | void __iomem *hc_mmio = mv_hc_base(mmio, 0); | |
3480 | ||
3481 | ZERO(0x00c); | |
3482 | ZERO(0x010); | |
3483 | ZERO(0x014); | |
3484 | ||
3485 | } | |
3486 | ||
3487 | #undef ZERO | |
3488 | ||
3489 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, | |
3490 | void __iomem *mmio, unsigned int n_hc) | |
3491 | { | |
3492 | unsigned int port; | |
3493 | ||
3494 | for (port = 0; port < hpriv->n_ports; port++) | |
3495 | mv_soc_reset_hc_port(hpriv, mmio, port); | |
3496 | ||
3497 | mv_soc_reset_one_hc(hpriv, mmio); | |
3498 | ||
3499 | return 0; | |
3500 | } | |
3501 | ||
3502 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, | |
3503 | void __iomem *mmio) | |
3504 | { | |
3505 | return; | |
3506 | } | |
3507 | ||
3508 | static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio) | |
3509 | { | |
3510 | return; | |
3511 | } | |
3512 | ||
29b7e43c MM |
3513 | static void mv_soc_65n_phy_errata(struct mv_host_priv *hpriv, |
3514 | void __iomem *mmio, unsigned int port) | |
3515 | { | |
3516 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
3517 | u32 reg; | |
3518 | ||
3519 | reg = readl(port_mmio + PHY_MODE3); | |
3520 | reg &= ~(0x3 << 27); /* SELMUPF (bits 28:27) to 1 */ | |
3521 | reg |= (0x1 << 27); | |
3522 | reg &= ~(0x3 << 29); /* SELMUPI (bits 30:29) to 1 */ | |
3523 | reg |= (0x1 << 29); | |
3524 | writel(reg, port_mmio + PHY_MODE3); | |
3525 | ||
3526 | reg = readl(port_mmio + PHY_MODE4); | |
3527 | reg &= ~0x1; /* SATU_OD8 (bit 0) to 0, reserved bit 16 must be set */ | |
3528 | reg |= (0x1 << 16); | |
3529 | writel(reg, port_mmio + PHY_MODE4); | |
3530 | ||
3531 | reg = readl(port_mmio + PHY_MODE9_GEN2); | |
3532 | reg &= ~0xf; /* TXAMP[3:0] (bits 3:0) to 8 */ | |
3533 | reg |= 0x8; | |
3534 | reg &= ~(0x1 << 14); /* TXAMP[4] (bit 14) to 0 */ | |
3535 | writel(reg, port_mmio + PHY_MODE9_GEN2); | |
3536 | ||
3537 | reg = readl(port_mmio + PHY_MODE9_GEN1); | |
3538 | reg &= ~0xf; /* TXAMP[3:0] (bits 3:0) to 8 */ | |
3539 | reg |= 0x8; | |
3540 | reg &= ~(0x1 << 14); /* TXAMP[4] (bit 14) to 0 */ | |
3541 | writel(reg, port_mmio + PHY_MODE9_GEN1); | |
3542 | } | |
3543 | ||
3544 | /** | |
3545 | * soc_is_65 - check if the soc is 65 nano device | |
3546 | * | |
3547 | * Detect the type of the SoC, this is done by reading the PHYCFG_OFS | |
3548 | * register, this register should contain non-zero value and it exists only | |
3549 | * in the 65 nano devices, when reading it from older devices we get 0. | |
3550 | */ | |
3551 | static bool soc_is_65n(struct mv_host_priv *hpriv) | |
3552 | { | |
3553 | void __iomem *port0_mmio = mv_port_base(hpriv->base, 0); | |
3554 | ||
3555 | if (readl(port0_mmio + PHYCFG_OFS)) | |
3556 | return true; | |
3557 | return false; | |
3558 | } | |
3559 | ||
8e7decdb | 3560 | static void mv_setup_ifcfg(void __iomem *port_mmio, int want_gen2i) |
b67a1064 | 3561 | { |
cae5a29d | 3562 | u32 ifcfg = readl(port_mmio + SATA_IFCFG); |
b67a1064 | 3563 | |
8e7decdb | 3564 | ifcfg = (ifcfg & 0xf7f) | 0x9b1000; /* from chip spec */ |
b67a1064 | 3565 | if (want_gen2i) |
8e7decdb | 3566 | ifcfg |= (1 << 7); /* enable gen2i speed */ |
cae5a29d | 3567 | writelfl(ifcfg, port_mmio + SATA_IFCFG); |
b67a1064 ML |
3568 | } |
3569 | ||
e12bef50 | 3570 | static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio, |
c9d39130 JG |
3571 | unsigned int port_no) |
3572 | { | |
3573 | void __iomem *port_mmio = mv_port_base(mmio, port_no); | |
3574 | ||
8e7decdb ML |
3575 | /* |
3576 | * The datasheet warns against setting EDMA_RESET when EDMA is active | |
3577 | * (but doesn't say what the problem might be). So we first try | |
3578 | * to disable the EDMA engine before doing the EDMA_RESET operation. | |
3579 | */ | |
0d8be5cb | 3580 | mv_stop_edma_engine(port_mmio); |
cae5a29d | 3581 | writelfl(EDMA_RESET, port_mmio + EDMA_CMD); |
c9d39130 | 3582 | |
b67a1064 | 3583 | if (!IS_GEN_I(hpriv)) { |
8e7decdb ML |
3584 | /* Enable 3.0gb/s link speed: this survives EDMA_RESET */ |
3585 | mv_setup_ifcfg(port_mmio, 1); | |
c9d39130 | 3586 | } |
b67a1064 | 3587 | /* |
8e7decdb | 3588 | * Strobing EDMA_RESET here causes a hard reset of the SATA transport, |
b67a1064 | 3589 | * link, and physical layers. It resets all SATA interface registers |
cae5a29d | 3590 | * (except for SATA_IFCFG), and issues a COMRESET to the dev. |
c9d39130 | 3591 | */ |
cae5a29d | 3592 | writelfl(EDMA_RESET, port_mmio + EDMA_CMD); |
b67a1064 | 3593 | udelay(25); /* allow reset propagation */ |
cae5a29d | 3594 | writelfl(0, port_mmio + EDMA_CMD); |
c9d39130 JG |
3595 | |
3596 | hpriv->ops->phy_errata(hpriv, mmio, port_no); | |
3597 | ||
ee9ccdf7 | 3598 | if (IS_GEN_I(hpriv)) |
e72685db | 3599 | usleep_range(500, 1000); |
c9d39130 JG |
3600 | } |
3601 | ||
e49856d8 | 3602 | static void mv_pmp_select(struct ata_port *ap, int pmp) |
20f733e7 | 3603 | { |
e49856d8 ML |
3604 | if (sata_pmp_supported(ap)) { |
3605 | void __iomem *port_mmio = mv_ap_base(ap); | |
cae5a29d | 3606 | u32 reg = readl(port_mmio + SATA_IFCTL); |
e49856d8 | 3607 | int old = reg & 0xf; |
22374677 | 3608 | |
e49856d8 ML |
3609 | if (old != pmp) { |
3610 | reg = (reg & ~0xf) | pmp; | |
cae5a29d | 3611 | writelfl(reg, port_mmio + SATA_IFCTL); |
e49856d8 | 3612 | } |
22374677 | 3613 | } |
20f733e7 BR |
3614 | } |
3615 | ||
e49856d8 ML |
3616 | static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class, |
3617 | unsigned long deadline) | |
22374677 | 3618 | { |
e49856d8 ML |
3619 | mv_pmp_select(link->ap, sata_srst_pmp(link)); |
3620 | return sata_std_hardreset(link, class, deadline); | |
3621 | } | |
bdd4ddde | 3622 | |
e49856d8 ML |
3623 | static int mv_softreset(struct ata_link *link, unsigned int *class, |
3624 | unsigned long deadline) | |
3625 | { | |
3626 | mv_pmp_select(link->ap, sata_srst_pmp(link)); | |
3627 | return ata_sff_softreset(link, class, deadline); | |
22374677 JG |
3628 | } |
3629 | ||
cc0680a5 | 3630 | static int mv_hardreset(struct ata_link *link, unsigned int *class, |
bdd4ddde | 3631 | unsigned long deadline) |
31961943 | 3632 | { |
cc0680a5 | 3633 | struct ata_port *ap = link->ap; |
bdd4ddde | 3634 | struct mv_host_priv *hpriv = ap->host->private_data; |
b562468c | 3635 | struct mv_port_priv *pp = ap->private_data; |
f351b2d6 | 3636 | void __iomem *mmio = hpriv->base; |
0d8be5cb ML |
3637 | int rc, attempts = 0, extra = 0; |
3638 | u32 sstatus; | |
3639 | bool online; | |
31961943 | 3640 | |
e12bef50 | 3641 | mv_reset_channel(hpriv, mmio, ap->port_no); |
b562468c | 3642 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
d16ab3f6 ML |
3643 | pp->pp_flags &= |
3644 | ~(MV_PP_FLAG_FBS_EN | MV_PP_FLAG_NCQ_EN | MV_PP_FLAG_FAKE_ATA_BUSY); | |
bdd4ddde | 3645 | |
0d8be5cb ML |
3646 | /* Workaround for errata FEr SATA#10 (part 2) */ |
3647 | do { | |
17c5aab5 ML |
3648 | const unsigned long *timing = |
3649 | sata_ehc_deb_timing(&link->eh_context); | |
bdd4ddde | 3650 | |
17c5aab5 ML |
3651 | rc = sata_link_hardreset(link, timing, deadline + extra, |
3652 | &online, NULL); | |
9dcffd99 | 3653 | rc = online ? -EAGAIN : rc; |
17c5aab5 | 3654 | if (rc) |
0d8be5cb | 3655 | return rc; |
0d8be5cb ML |
3656 | sata_scr_read(link, SCR_STATUS, &sstatus); |
3657 | if (!IS_GEN_I(hpriv) && ++attempts >= 5 && sstatus == 0x121) { | |
3658 | /* Force 1.5gb/s link speed and try again */ | |
8e7decdb | 3659 | mv_setup_ifcfg(mv_ap_base(ap), 0); |
0d8be5cb ML |
3660 | if (time_after(jiffies + HZ, deadline)) |
3661 | extra = HZ; /* only extend it once, max */ | |
3662 | } | |
3663 | } while (sstatus != 0x0 && sstatus != 0x113 && sstatus != 0x123); | |
08da1759 | 3664 | mv_save_cached_regs(ap); |
66e57a2c | 3665 | mv_edma_cfg(ap, 0, 0); |
bdd4ddde | 3666 | |
17c5aab5 | 3667 | return rc; |
bdd4ddde JG |
3668 | } |
3669 | ||
bdd4ddde JG |
3670 | static void mv_eh_freeze(struct ata_port *ap) |
3671 | { | |
1cfd19ae | 3672 | mv_stop_edma(ap); |
c4de573b | 3673 | mv_enable_port_irqs(ap, 0); |
bdd4ddde JG |
3674 | } |
3675 | ||
3676 | static void mv_eh_thaw(struct ata_port *ap) | |
3677 | { | |
f351b2d6 | 3678 | struct mv_host_priv *hpriv = ap->host->private_data; |
c4de573b ML |
3679 | unsigned int port = ap->port_no; |
3680 | unsigned int hardport = mv_hardport_from_port(port); | |
1cfd19ae | 3681 | void __iomem *hc_mmio = mv_hc_base_from_port(hpriv->base, port); |
bdd4ddde | 3682 | void __iomem *port_mmio = mv_ap_base(ap); |
c4de573b | 3683 | u32 hc_irq_cause; |
bdd4ddde | 3684 | |
bdd4ddde | 3685 | /* clear EDMA errors on this port */ |
cae5a29d | 3686 | writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE); |
bdd4ddde JG |
3687 | |
3688 | /* clear pending irq events */ | |
cae6edc3 | 3689 | hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport); |
cae5a29d | 3690 | writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE); |
bdd4ddde | 3691 | |
88e675e1 | 3692 | mv_enable_port_irqs(ap, ERR_IRQ); |
31961943 BR |
3693 | } |
3694 | ||
05b308e1 BR |
3695 | /** |
3696 | * mv_port_init - Perform some early initialization on a single port. | |
3697 | * @port: libata data structure storing shadow register addresses | |
3698 | * @port_mmio: base address of the port | |
3699 | * | |
3700 | * Initialize shadow register mmio addresses, clear outstanding | |
3701 | * interrupts on the port, and unmask interrupts for the future | |
3702 | * start of the port. | |
3703 | * | |
3704 | * LOCKING: | |
3705 | * Inherited from caller. | |
3706 | */ | |
31961943 | 3707 | static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio) |
20f733e7 | 3708 | { |
cae5a29d | 3709 | void __iomem *serr, *shd_base = port_mmio + SHD_BLK; |
31961943 | 3710 | |
8b260248 | 3711 | /* PIO related setup |
31961943 BR |
3712 | */ |
3713 | port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA); | |
8b260248 | 3714 | port->error_addr = |
31961943 BR |
3715 | port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR); |
3716 | port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT); | |
3717 | port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL); | |
3718 | port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM); | |
3719 | port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH); | |
3720 | port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE); | |
8b260248 | 3721 | port->status_addr = |
31961943 BR |
3722 | port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS); |
3723 | /* special case: control/altstatus doesn't have ATA_REG_ address */ | |
cae5a29d | 3724 | port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST; |
31961943 | 3725 | |
31961943 | 3726 | /* Clear any currently outstanding port interrupt conditions */ |
cae5a29d ML |
3727 | serr = port_mmio + mv_scr_offset(SCR_ERROR); |
3728 | writelfl(readl(serr), serr); | |
3729 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE); | |
31961943 | 3730 | |
646a4da5 | 3731 | /* unmask all non-transient EDMA error interrupts */ |
cae5a29d | 3732 | writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK); |
20f733e7 | 3733 | |
8b260248 | 3734 | VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n", |
cae5a29d ML |
3735 | readl(port_mmio + EDMA_CFG), |
3736 | readl(port_mmio + EDMA_ERR_IRQ_CAUSE), | |
3737 | readl(port_mmio + EDMA_ERR_IRQ_MASK)); | |
20f733e7 BR |
3738 | } |
3739 | ||
616d4a98 ML |
3740 | static unsigned int mv_in_pcix_mode(struct ata_host *host) |
3741 | { | |
3742 | struct mv_host_priv *hpriv = host->private_data; | |
3743 | void __iomem *mmio = hpriv->base; | |
3744 | u32 reg; | |
3745 | ||
1f398472 | 3746 | if (IS_SOC(hpriv) || !IS_PCIE(hpriv)) |
616d4a98 | 3747 | return 0; /* not PCI-X capable */ |
cae5a29d | 3748 | reg = readl(mmio + MV_PCI_MODE); |
616d4a98 ML |
3749 | if ((reg & MV_PCI_MODE_MASK) == 0) |
3750 | return 0; /* conventional PCI mode */ | |
3751 | return 1; /* chip is in PCI-X mode */ | |
3752 | } | |
3753 | ||
3754 | static int mv_pci_cut_through_okay(struct ata_host *host) | |
3755 | { | |
3756 | struct mv_host_priv *hpriv = host->private_data; | |
3757 | void __iomem *mmio = hpriv->base; | |
3758 | u32 reg; | |
3759 | ||
3760 | if (!mv_in_pcix_mode(host)) { | |
cae5a29d ML |
3761 | reg = readl(mmio + MV_PCI_COMMAND); |
3762 | if (reg & MV_PCI_COMMAND_MRDTRIG) | |
616d4a98 ML |
3763 | return 0; /* not okay */ |
3764 | } | |
3765 | return 1; /* okay */ | |
3766 | } | |
3767 | ||
65ad7fef ML |
3768 | static void mv_60x1b2_errata_pci7(struct ata_host *host) |
3769 | { | |
3770 | struct mv_host_priv *hpriv = host->private_data; | |
3771 | void __iomem *mmio = hpriv->base; | |
3772 | ||
3773 | /* workaround for 60x1-B2 errata PCI#7 */ | |
3774 | if (mv_in_pcix_mode(host)) { | |
cae5a29d ML |
3775 | u32 reg = readl(mmio + MV_PCI_COMMAND); |
3776 | writelfl(reg & ~MV_PCI_COMMAND_MWRCOM, mmio + MV_PCI_COMMAND); | |
65ad7fef ML |
3777 | } |
3778 | } | |
3779 | ||
4447d351 | 3780 | static int mv_chip_id(struct ata_host *host, unsigned int board_idx) |
bca1c4eb | 3781 | { |
4447d351 TH |
3782 | struct pci_dev *pdev = to_pci_dev(host->dev); |
3783 | struct mv_host_priv *hpriv = host->private_data; | |
bca1c4eb JG |
3784 | u32 hp_flags = hpriv->hp_flags; |
3785 | ||
5796d1c4 | 3786 | switch (board_idx) { |
47c2b677 JG |
3787 | case chip_5080: |
3788 | hpriv->ops = &mv5xxx_ops; | |
ee9ccdf7 | 3789 | hp_flags |= MV_HP_GEN_I; |
47c2b677 | 3790 | |
44c10138 | 3791 | switch (pdev->revision) { |
47c2b677 JG |
3792 | case 0x1: |
3793 | hp_flags |= MV_HP_ERRATA_50XXB0; | |
3794 | break; | |
3795 | case 0x3: | |
3796 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
3797 | break; | |
3798 | default: | |
a44fec1f JP |
3799 | dev_warn(&pdev->dev, |
3800 | "Applying 50XXB2 workarounds to unknown rev\n"); | |
47c2b677 JG |
3801 | hp_flags |= MV_HP_ERRATA_50XXB2; |
3802 | break; | |
3803 | } | |
3804 | break; | |
3805 | ||
bca1c4eb JG |
3806 | case chip_504x: |
3807 | case chip_508x: | |
47c2b677 | 3808 | hpriv->ops = &mv5xxx_ops; |
ee9ccdf7 | 3809 | hp_flags |= MV_HP_GEN_I; |
bca1c4eb | 3810 | |
44c10138 | 3811 | switch (pdev->revision) { |
47c2b677 JG |
3812 | case 0x0: |
3813 | hp_flags |= MV_HP_ERRATA_50XXB0; | |
3814 | break; | |
3815 | case 0x3: | |
3816 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
3817 | break; | |
3818 | default: | |
a44fec1f JP |
3819 | dev_warn(&pdev->dev, |
3820 | "Applying B2 workarounds to unknown rev\n"); | |
47c2b677 JG |
3821 | hp_flags |= MV_HP_ERRATA_50XXB2; |
3822 | break; | |
bca1c4eb JG |
3823 | } |
3824 | break; | |
3825 | ||
3826 | case chip_604x: | |
3827 | case chip_608x: | |
47c2b677 | 3828 | hpriv->ops = &mv6xxx_ops; |
ee9ccdf7 | 3829 | hp_flags |= MV_HP_GEN_II; |
47c2b677 | 3830 | |
44c10138 | 3831 | switch (pdev->revision) { |
47c2b677 | 3832 | case 0x7: |
65ad7fef | 3833 | mv_60x1b2_errata_pci7(host); |
47c2b677 JG |
3834 | hp_flags |= MV_HP_ERRATA_60X1B2; |
3835 | break; | |
3836 | case 0x9: | |
3837 | hp_flags |= MV_HP_ERRATA_60X1C0; | |
bca1c4eb JG |
3838 | break; |
3839 | default: | |
a44fec1f JP |
3840 | dev_warn(&pdev->dev, |
3841 | "Applying B2 workarounds to unknown rev\n"); | |
47c2b677 | 3842 | hp_flags |= MV_HP_ERRATA_60X1B2; |
bca1c4eb JG |
3843 | break; |
3844 | } | |
3845 | break; | |
3846 | ||
e4e7b892 | 3847 | case chip_7042: |
616d4a98 | 3848 | hp_flags |= MV_HP_PCIE | MV_HP_CUT_THROUGH; |
306b30f7 ML |
3849 | if (pdev->vendor == PCI_VENDOR_ID_TTI && |
3850 | (pdev->device == 0x2300 || pdev->device == 0x2310)) | |
3851 | { | |
4e520033 ML |
3852 | /* |
3853 | * Highpoint RocketRAID PCIe 23xx series cards: | |
3854 | * | |
3855 | * Unconfigured drives are treated as "Legacy" | |
3856 | * by the BIOS, and it overwrites sector 8 with | |
3857 | * a "Lgcy" metadata block prior to Linux boot. | |
3858 | * | |
3859 | * Configured drives (RAID or JBOD) leave sector 8 | |
3860 | * alone, but instead overwrite a high numbered | |
3861 | * sector for the RAID metadata. This sector can | |
3862 | * be determined exactly, by truncating the physical | |
3863 | * drive capacity to a nice even GB value. | |
3864 | * | |
3865 | * RAID metadata is at: (dev->n_sectors & ~0xfffff) | |
3866 | * | |
3867 | * Warn the user, lest they think we're just buggy. | |
3868 | */ | |
3869 | printk(KERN_WARNING DRV_NAME ": Highpoint RocketRAID" | |
3870 | " BIOS CORRUPTS DATA on all attached drives," | |
3871 | " regardless of if/how they are configured." | |
3872 | " BEWARE!\n"); | |
3873 | printk(KERN_WARNING DRV_NAME ": For data safety, do not" | |
3874 | " use sectors 8-9 on \"Legacy\" drives," | |
3875 | " and avoid the final two gigabytes on" | |
3876 | " all RocketRAID BIOS initialized drives.\n"); | |
306b30f7 | 3877 | } |
05b83605 | 3878 | /* fall through */ |
e4e7b892 JG |
3879 | case chip_6042: |
3880 | hpriv->ops = &mv6xxx_ops; | |
e4e7b892 | 3881 | hp_flags |= MV_HP_GEN_IIE; |
616d4a98 ML |
3882 | if (board_idx == chip_6042 && mv_pci_cut_through_okay(host)) |
3883 | hp_flags |= MV_HP_CUT_THROUGH; | |
e4e7b892 | 3884 | |
44c10138 | 3885 | switch (pdev->revision) { |
5cf73bfb | 3886 | case 0x2: /* Rev.B0: the first/only public release */ |
e4e7b892 JG |
3887 | hp_flags |= MV_HP_ERRATA_60X1C0; |
3888 | break; | |
3889 | default: | |
a44fec1f JP |
3890 | dev_warn(&pdev->dev, |
3891 | "Applying 60X1C0 workarounds to unknown rev\n"); | |
e4e7b892 JG |
3892 | hp_flags |= MV_HP_ERRATA_60X1C0; |
3893 | break; | |
3894 | } | |
3895 | break; | |
f351b2d6 | 3896 | case chip_soc: |
29b7e43c MM |
3897 | if (soc_is_65n(hpriv)) |
3898 | hpriv->ops = &mv_soc_65n_ops; | |
3899 | else | |
3900 | hpriv->ops = &mv_soc_ops; | |
eb3a55a9 SB |
3901 | hp_flags |= MV_HP_FLAG_SOC | MV_HP_GEN_IIE | |
3902 | MV_HP_ERRATA_60X1C0; | |
f351b2d6 | 3903 | break; |
e4e7b892 | 3904 | |
bca1c4eb | 3905 | default: |
a44fec1f | 3906 | dev_err(host->dev, "BUG: invalid board index %u\n", board_idx); |
bca1c4eb JG |
3907 | return 1; |
3908 | } | |
3909 | ||
3910 | hpriv->hp_flags = hp_flags; | |
02a121da | 3911 | if (hp_flags & MV_HP_PCIE) { |
cae5a29d ML |
3912 | hpriv->irq_cause_offset = PCIE_IRQ_CAUSE; |
3913 | hpriv->irq_mask_offset = PCIE_IRQ_MASK; | |
02a121da ML |
3914 | hpriv->unmask_all_irqs = PCIE_UNMASK_ALL_IRQS; |
3915 | } else { | |
cae5a29d ML |
3916 | hpriv->irq_cause_offset = PCI_IRQ_CAUSE; |
3917 | hpriv->irq_mask_offset = PCI_IRQ_MASK; | |
02a121da ML |
3918 | hpriv->unmask_all_irqs = PCI_UNMASK_ALL_IRQS; |
3919 | } | |
bca1c4eb JG |
3920 | |
3921 | return 0; | |
3922 | } | |
3923 | ||
05b308e1 | 3924 | /** |
47c2b677 | 3925 | * mv_init_host - Perform some early initialization of the host. |
4447d351 | 3926 | * @host: ATA host to initialize |
05b308e1 BR |
3927 | * |
3928 | * If possible, do an early global reset of the host. Then do | |
3929 | * our port init and clear/unmask all/relevant host interrupts. | |
3930 | * | |
3931 | * LOCKING: | |
3932 | * Inherited from caller. | |
3933 | */ | |
1bfeff03 | 3934 | static int mv_init_host(struct ata_host *host) |
20f733e7 BR |
3935 | { |
3936 | int rc = 0, n_hc, port, hc; | |
4447d351 | 3937 | struct mv_host_priv *hpriv = host->private_data; |
f351b2d6 | 3938 | void __iomem *mmio = hpriv->base; |
47c2b677 | 3939 | |
1bfeff03 | 3940 | rc = mv_chip_id(host, hpriv->board_idx); |
bca1c4eb | 3941 | if (rc) |
352fab70 | 3942 | goto done; |
f351b2d6 | 3943 | |
1f398472 | 3944 | if (IS_SOC(hpriv)) { |
cae5a29d ML |
3945 | hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE; |
3946 | hpriv->main_irq_mask_addr = mmio + SOC_HC_MAIN_IRQ_MASK; | |
1f398472 | 3947 | } else { |
cae5a29d ML |
3948 | hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE; |
3949 | hpriv->main_irq_mask_addr = mmio + PCI_HC_MAIN_IRQ_MASK; | |
f351b2d6 | 3950 | } |
352fab70 | 3951 | |
5d0fb2e7 TR |
3952 | /* initialize shadow irq mask with register's value */ |
3953 | hpriv->main_irq_mask = readl(hpriv->main_irq_mask_addr); | |
3954 | ||
352fab70 | 3955 | /* global interrupt mask: 0 == mask everything */ |
c4de573b | 3956 | mv_set_main_irq_mask(host, ~0, 0); |
bca1c4eb | 3957 | |
4447d351 | 3958 | n_hc = mv_get_hc_count(host->ports[0]->flags); |
bca1c4eb | 3959 | |
4447d351 | 3960 | for (port = 0; port < host->n_ports; port++) |
29b7e43c MM |
3961 | if (hpriv->ops->read_preamp) |
3962 | hpriv->ops->read_preamp(hpriv, port, mmio); | |
20f733e7 | 3963 | |
c9d39130 | 3964 | rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc); |
47c2b677 | 3965 | if (rc) |
20f733e7 | 3966 | goto done; |
20f733e7 | 3967 | |
522479fb | 3968 | hpriv->ops->reset_flash(hpriv, mmio); |
7bb3c529 | 3969 | hpriv->ops->reset_bus(host, mmio); |
47c2b677 | 3970 | hpriv->ops->enable_leds(hpriv, mmio); |
20f733e7 | 3971 | |
4447d351 | 3972 | for (port = 0; port < host->n_ports; port++) { |
cbcdd875 | 3973 | struct ata_port *ap = host->ports[port]; |
2a47ce06 | 3974 | void __iomem *port_mmio = mv_port_base(mmio, port); |
cbcdd875 TH |
3975 | |
3976 | mv_port_init(&ap->ioaddr, port_mmio); | |
20f733e7 BR |
3977 | } |
3978 | ||
3979 | for (hc = 0; hc < n_hc; hc++) { | |
31961943 BR |
3980 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); |
3981 | ||
3982 | VPRINTK("HC%i: HC config=0x%08x HC IRQ cause " | |
3983 | "(before clear)=0x%08x\n", hc, | |
cae5a29d ML |
3984 | readl(hc_mmio + HC_CFG), |
3985 | readl(hc_mmio + HC_IRQ_CAUSE)); | |
31961943 BR |
3986 | |
3987 | /* Clear any currently outstanding hc interrupt conditions */ | |
cae5a29d | 3988 | writelfl(0, hc_mmio + HC_IRQ_CAUSE); |
20f733e7 BR |
3989 | } |
3990 | ||
44c65d16 ML |
3991 | if (!IS_SOC(hpriv)) { |
3992 | /* Clear any currently outstanding host interrupt conditions */ | |
cae5a29d | 3993 | writelfl(0, mmio + hpriv->irq_cause_offset); |
31961943 | 3994 | |
44c65d16 | 3995 | /* and unmask interrupt generation for host regs */ |
cae5a29d | 3996 | writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_offset); |
44c65d16 | 3997 | } |
51de32d2 | 3998 | |
6be96ac1 ML |
3999 | /* |
4000 | * enable only global host interrupts for now. | |
4001 | * The per-port interrupts get done later as ports are set up. | |
4002 | */ | |
4003 | mv_set_main_irq_mask(host, 0, PCI_ERR); | |
2b748a0a ML |
4004 | mv_set_irq_coalescing(host, irq_coalescing_io_count, |
4005 | irq_coalescing_usecs); | |
f351b2d6 SB |
4006 | done: |
4007 | return rc; | |
4008 | } | |
fb621e2f | 4009 | |
fbf14e2f BB |
4010 | static int mv_create_dma_pools(struct mv_host_priv *hpriv, struct device *dev) |
4011 | { | |
4012 | hpriv->crqb_pool = dmam_pool_create("crqb_q", dev, MV_CRQB_Q_SZ, | |
4013 | MV_CRQB_Q_SZ, 0); | |
4014 | if (!hpriv->crqb_pool) | |
4015 | return -ENOMEM; | |
4016 | ||
4017 | hpriv->crpb_pool = dmam_pool_create("crpb_q", dev, MV_CRPB_Q_SZ, | |
4018 | MV_CRPB_Q_SZ, 0); | |
4019 | if (!hpriv->crpb_pool) | |
4020 | return -ENOMEM; | |
4021 | ||
4022 | hpriv->sg_tbl_pool = dmam_pool_create("sg_tbl", dev, MV_SG_TBL_SZ, | |
4023 | MV_SG_TBL_SZ, 0); | |
4024 | if (!hpriv->sg_tbl_pool) | |
4025 | return -ENOMEM; | |
4026 | ||
4027 | return 0; | |
4028 | } | |
4029 | ||
15a32632 | 4030 | static void mv_conf_mbus_windows(struct mv_host_priv *hpriv, |
63a9332b | 4031 | const struct mbus_dram_target_info *dram) |
15a32632 LB |
4032 | { |
4033 | int i; | |
4034 | ||
4035 | for (i = 0; i < 4; i++) { | |
4036 | writel(0, hpriv->base + WINDOW_CTRL(i)); | |
4037 | writel(0, hpriv->base + WINDOW_BASE(i)); | |
4038 | } | |
4039 | ||
4040 | for (i = 0; i < dram->num_cs; i++) { | |
63a9332b | 4041 | const struct mbus_dram_window *cs = dram->cs + i; |
15a32632 LB |
4042 | |
4043 | writel(((cs->size - 1) & 0xffff0000) | | |
4044 | (cs->mbus_attr << 8) | | |
4045 | (dram->mbus_dram_target_id << 4) | 1, | |
4046 | hpriv->base + WINDOW_CTRL(i)); | |
4047 | writel(cs->base, hpriv->base + WINDOW_BASE(i)); | |
4048 | } | |
4049 | } | |
4050 | ||
f351b2d6 SB |
4051 | /** |
4052 | * mv_platform_probe - handle a positive probe of an soc Marvell | |
4053 | * host | |
4054 | * @pdev: platform device found | |
4055 | * | |
4056 | * LOCKING: | |
4057 | * Inherited from caller. | |
4058 | */ | |
4059 | static int mv_platform_probe(struct platform_device *pdev) | |
4060 | { | |
f351b2d6 | 4061 | const struct mv_sata_platform_data *mv_platform_data; |
63a9332b | 4062 | const struct mbus_dram_target_info *dram; |
f351b2d6 SB |
4063 | const struct ata_port_info *ppi[] = |
4064 | { &mv_port_info[chip_soc], NULL }; | |
4065 | struct ata_host *host; | |
4066 | struct mv_host_priv *hpriv; | |
4067 | struct resource *res; | |
97b414e1 | 4068 | int n_ports = 0, irq = 0; |
99b80e97 | 4069 | int rc; |
eee98990 | 4070 | int port; |
20f733e7 | 4071 | |
06296a1e | 4072 | ata_print_version_once(&pdev->dev, DRV_VERSION); |
bca1c4eb | 4073 | |
f351b2d6 SB |
4074 | /* |
4075 | * Simple resource validation .. | |
4076 | */ | |
4077 | if (unlikely(pdev->num_resources != 2)) { | |
4078 | dev_err(&pdev->dev, "invalid number of resources\n"); | |
4079 | return -EINVAL; | |
4080 | } | |
4081 | ||
4082 | /* | |
4083 | * Get the register base first | |
4084 | */ | |
4085 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
3e4240da AL |
4086 | if (res == NULL) |
4087 | return -EINVAL; | |
f351b2d6 SB |
4088 | |
4089 | /* allocate host */ | |
97b414e1 | 4090 | if (pdev->dev.of_node) { |
5c3ef397 UKK |
4091 | rc = of_property_read_u32(pdev->dev.of_node, "nr-ports", |
4092 | &n_ports); | |
4093 | if (rc) { | |
4094 | dev_err(&pdev->dev, | |
4095 | "error parsing nr-ports property: %d\n", rc); | |
4096 | return rc; | |
4097 | } | |
4098 | ||
4099 | if (n_ports <= 0) { | |
4100 | dev_err(&pdev->dev, "nr-ports must be positive: %d\n", | |
4101 | n_ports); | |
4102 | return -EINVAL; | |
4103 | } | |
4104 | ||
97b414e1 AL |
4105 | irq = irq_of_parse_and_map(pdev->dev.of_node, 0); |
4106 | } else { | |
61b8c345 | 4107 | mv_platform_data = dev_get_platdata(&pdev->dev); |
97b414e1 AL |
4108 | n_ports = mv_platform_data->n_ports; |
4109 | irq = platform_get_irq(pdev, 0); | |
4110 | } | |
f351b2d6 SB |
4111 | |
4112 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); | |
4113 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); | |
4114 | ||
4115 | if (!host || !hpriv) | |
4116 | return -ENOMEM; | |
a86854d0 KC |
4117 | hpriv->port_clks = devm_kcalloc(&pdev->dev, |
4118 | n_ports, sizeof(struct clk *), | |
eee98990 AL |
4119 | GFP_KERNEL); |
4120 | if (!hpriv->port_clks) | |
4121 | return -ENOMEM; | |
a86854d0 KC |
4122 | hpriv->port_phys = devm_kcalloc(&pdev->dev, |
4123 | n_ports, sizeof(struct phy *), | |
b7db4f2e AL |
4124 | GFP_KERNEL); |
4125 | if (!hpriv->port_phys) | |
4126 | return -ENOMEM; | |
f351b2d6 | 4127 | host->private_data = hpriv; |
1bfeff03 | 4128 | hpriv->board_idx = chip_soc; |
f351b2d6 SB |
4129 | |
4130 | host->iomap = NULL; | |
3e4240da AL |
4131 | hpriv->base = devm_ioremap(&pdev->dev, res->start, |
4132 | resource_size(res)); | |
4133 | if (!hpriv->base) | |
4134 | return -ENOMEM; | |
4135 | ||
4136 | hpriv->base -= SATAHC0_REG_BASE; | |
f351b2d6 | 4137 | |
c77a2f4e SB |
4138 | hpriv->clk = clk_get(&pdev->dev, NULL); |
4139 | if (IS_ERR(hpriv->clk)) | |
eee98990 | 4140 | dev_notice(&pdev->dev, "cannot get optional clkdev\n"); |
c77a2f4e | 4141 | else |
eee98990 AL |
4142 | clk_prepare_enable(hpriv->clk); |
4143 | ||
4144 | for (port = 0; port < n_ports; port++) { | |
4145 | char port_number[16]; | |
4146 | sprintf(port_number, "%d", port); | |
4147 | hpriv->port_clks[port] = clk_get(&pdev->dev, port_number); | |
4148 | if (!IS_ERR(hpriv->port_clks[port])) | |
4149 | clk_prepare_enable(hpriv->port_clks[port]); | |
b7db4f2e AL |
4150 | |
4151 | sprintf(port_number, "port%d", port); | |
90aa2997 AL |
4152 | hpriv->port_phys[port] = devm_phy_optional_get(&pdev->dev, |
4153 | port_number); | |
b7db4f2e AL |
4154 | if (IS_ERR(hpriv->port_phys[port])) { |
4155 | rc = PTR_ERR(hpriv->port_phys[port]); | |
4156 | hpriv->port_phys[port] = NULL; | |
90aa2997 | 4157 | if (rc != -EPROBE_DEFER) |
54dfffde | 4158 | dev_warn(&pdev->dev, "error getting phy %d", rc); |
8ad116e6 EG |
4159 | |
4160 | /* Cleanup only the initialized ports */ | |
4161 | hpriv->n_ports = port; | |
b7db4f2e AL |
4162 | goto err; |
4163 | } else | |
4164 | phy_power_on(hpriv->port_phys[port]); | |
eee98990 | 4165 | } |
c77a2f4e | 4166 | |
8ad116e6 EG |
4167 | /* All the ports have been initialized */ |
4168 | hpriv->n_ports = n_ports; | |
4169 | ||
15a32632 LB |
4170 | /* |
4171 | * (Re-)program MBUS remapping windows if we are asked to. | |
4172 | */ | |
63a9332b AL |
4173 | dram = mv_mbus_dram_info(); |
4174 | if (dram) | |
4175 | mv_conf_mbus_windows(hpriv, dram); | |
15a32632 | 4176 | |
fbf14e2f BB |
4177 | rc = mv_create_dma_pools(hpriv, &pdev->dev); |
4178 | if (rc) | |
c77a2f4e | 4179 | goto err; |
fbf14e2f | 4180 | |
9013d64e LA |
4181 | /* |
4182 | * To allow disk hotplug on Armada 370/XP SoCs, the PHY speed must be | |
4183 | * updated in the LP_PHY_CTL register. | |
4184 | */ | |
4185 | if (pdev->dev.of_node && | |
4186 | of_device_is_compatible(pdev->dev.of_node, | |
4187 | "marvell,armada-370-sata")) | |
4188 | hpriv->hp_flags |= MV_HP_FIX_LP_PHY_CTL; | |
4189 | ||
f351b2d6 | 4190 | /* initialize adapter */ |
1bfeff03 | 4191 | rc = mv_init_host(host); |
f351b2d6 | 4192 | if (rc) |
c77a2f4e | 4193 | goto err; |
f351b2d6 | 4194 | |
a44fec1f JP |
4195 | dev_info(&pdev->dev, "slots %u ports %d\n", |
4196 | (unsigned)MV_MAX_Q_DEPTH, host->n_ports); | |
f351b2d6 | 4197 | |
97b414e1 | 4198 | rc = ata_host_activate(host, irq, mv_interrupt, IRQF_SHARED, &mv6_sht); |
c00a4c9d SS |
4199 | if (!rc) |
4200 | return 0; | |
4201 | ||
c77a2f4e | 4202 | err: |
c77a2f4e | 4203 | if (!IS_ERR(hpriv->clk)) { |
eee98990 | 4204 | clk_disable_unprepare(hpriv->clk); |
c77a2f4e SB |
4205 | clk_put(hpriv->clk); |
4206 | } | |
8ad116e6 | 4207 | for (port = 0; port < hpriv->n_ports; port++) { |
eee98990 AL |
4208 | if (!IS_ERR(hpriv->port_clks[port])) { |
4209 | clk_disable_unprepare(hpriv->port_clks[port]); | |
4210 | clk_put(hpriv->port_clks[port]); | |
4211 | } | |
fad06016 | 4212 | phy_power_off(hpriv->port_phys[port]); |
eee98990 | 4213 | } |
c77a2f4e SB |
4214 | |
4215 | return rc; | |
f351b2d6 SB |
4216 | } |
4217 | ||
4218 | /* | |
4219 | * | |
4220 | * mv_platform_remove - unplug a platform interface | |
4221 | * @pdev: platform device | |
4222 | * | |
4223 | * A platform bus SATA device has been unplugged. Perform the needed | |
4224 | * cleanup. Also called on module unload for any active devices. | |
4225 | */ | |
0ec24914 | 4226 | static int mv_platform_remove(struct platform_device *pdev) |
f351b2d6 | 4227 | { |
d8661921 | 4228 | struct ata_host *host = platform_get_drvdata(pdev); |
c77a2f4e | 4229 | struct mv_host_priv *hpriv = host->private_data; |
eee98990 | 4230 | int port; |
f351b2d6 | 4231 | ata_host_detach(host); |
c77a2f4e | 4232 | |
c77a2f4e | 4233 | if (!IS_ERR(hpriv->clk)) { |
eee98990 | 4234 | clk_disable_unprepare(hpriv->clk); |
c77a2f4e SB |
4235 | clk_put(hpriv->clk); |
4236 | } | |
eee98990 AL |
4237 | for (port = 0; port < host->n_ports; port++) { |
4238 | if (!IS_ERR(hpriv->port_clks[port])) { | |
4239 | clk_disable_unprepare(hpriv->port_clks[port]); | |
4240 | clk_put(hpriv->port_clks[port]); | |
4241 | } | |
fad06016 | 4242 | phy_power_off(hpriv->port_phys[port]); |
eee98990 | 4243 | } |
f351b2d6 | 4244 | return 0; |
20f733e7 BR |
4245 | } |
4246 | ||
58eb8cd5 | 4247 | #ifdef CONFIG_PM_SLEEP |
6481f2b5 SB |
4248 | static int mv_platform_suspend(struct platform_device *pdev, pm_message_t state) |
4249 | { | |
d8661921 | 4250 | struct ata_host *host = platform_get_drvdata(pdev); |
6481f2b5 SB |
4251 | if (host) |
4252 | return ata_host_suspend(host, state); | |
4253 | else | |
4254 | return 0; | |
4255 | } | |
4256 | ||
4257 | static int mv_platform_resume(struct platform_device *pdev) | |
4258 | { | |
d8661921 | 4259 | struct ata_host *host = platform_get_drvdata(pdev); |
63a9332b | 4260 | const struct mbus_dram_target_info *dram; |
6481f2b5 SB |
4261 | int ret; |
4262 | ||
4263 | if (host) { | |
4264 | struct mv_host_priv *hpriv = host->private_data; | |
63a9332b | 4265 | |
6481f2b5 SB |
4266 | /* |
4267 | * (Re-)program MBUS remapping windows if we are asked to. | |
4268 | */ | |
63a9332b AL |
4269 | dram = mv_mbus_dram_info(); |
4270 | if (dram) | |
4271 | mv_conf_mbus_windows(hpriv, dram); | |
6481f2b5 SB |
4272 | |
4273 | /* initialize adapter */ | |
1bfeff03 | 4274 | ret = mv_init_host(host); |
6481f2b5 SB |
4275 | if (ret) { |
4276 | printk(KERN_ERR DRV_NAME ": Error during HW init\n"); | |
4277 | return ret; | |
4278 | } | |
4279 | ata_host_resume(host); | |
4280 | } | |
4281 | ||
4282 | return 0; | |
4283 | } | |
4284 | #else | |
4285 | #define mv_platform_suspend NULL | |
4286 | #define mv_platform_resume NULL | |
4287 | #endif | |
4288 | ||
97b414e1 | 4289 | #ifdef CONFIG_OF |
e3779f6a | 4290 | static const struct of_device_id mv_sata_dt_ids[] = { |
b1f5c73b | 4291 | { .compatible = "marvell,armada-370-sata", }, |
97b414e1 AL |
4292 | { .compatible = "marvell,orion-sata", }, |
4293 | {}, | |
4294 | }; | |
4295 | MODULE_DEVICE_TABLE(of, mv_sata_dt_ids); | |
4296 | #endif | |
4297 | ||
f351b2d6 | 4298 | static struct platform_driver mv_platform_driver = { |
97b414e1 | 4299 | .probe = mv_platform_probe, |
0ec24914 | 4300 | .remove = mv_platform_remove, |
97b414e1 AL |
4301 | .suspend = mv_platform_suspend, |
4302 | .resume = mv_platform_resume, | |
4303 | .driver = { | |
4304 | .name = DRV_NAME, | |
97b414e1 AL |
4305 | .of_match_table = of_match_ptr(mv_sata_dt_ids), |
4306 | }, | |
f351b2d6 SB |
4307 | }; |
4308 | ||
4309 | ||
7bb3c529 | 4310 | #ifdef CONFIG_PCI |
f351b2d6 SB |
4311 | static int mv_pci_init_one(struct pci_dev *pdev, |
4312 | const struct pci_device_id *ent); | |
58eb8cd5 | 4313 | #ifdef CONFIG_PM_SLEEP |
b2dec48c SB |
4314 | static int mv_pci_device_resume(struct pci_dev *pdev); |
4315 | #endif | |
f351b2d6 | 4316 | |
7bb3c529 SB |
4317 | |
4318 | static struct pci_driver mv_pci_driver = { | |
4319 | .name = DRV_NAME, | |
4320 | .id_table = mv_pci_tbl, | |
f351b2d6 | 4321 | .probe = mv_pci_init_one, |
7bb3c529 | 4322 | .remove = ata_pci_remove_one, |
58eb8cd5 | 4323 | #ifdef CONFIG_PM_SLEEP |
b2dec48c SB |
4324 | .suspend = ata_pci_device_suspend, |
4325 | .resume = mv_pci_device_resume, | |
4326 | #endif | |
4327 | ||
7bb3c529 SB |
4328 | }; |
4329 | ||
7bb3c529 SB |
4330 | /* move to PCI layer or libata core? */ |
4331 | static int pci_go_64(struct pci_dev *pdev) | |
4332 | { | |
4333 | int rc; | |
4334 | ||
c54c719b QL |
4335 | if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { |
4336 | rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); | |
7bb3c529 | 4337 | if (rc) { |
c54c719b | 4338 | rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); |
7bb3c529 | 4339 | if (rc) { |
a44fec1f JP |
4340 | dev_err(&pdev->dev, |
4341 | "64-bit DMA enable failed\n"); | |
7bb3c529 SB |
4342 | return rc; |
4343 | } | |
4344 | } | |
4345 | } else { | |
c54c719b | 4346 | rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
7bb3c529 | 4347 | if (rc) { |
a44fec1f | 4348 | dev_err(&pdev->dev, "32-bit DMA enable failed\n"); |
7bb3c529 SB |
4349 | return rc; |
4350 | } | |
c54c719b | 4351 | rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); |
7bb3c529 | 4352 | if (rc) { |
a44fec1f JP |
4353 | dev_err(&pdev->dev, |
4354 | "32-bit consistent DMA enable failed\n"); | |
7bb3c529 SB |
4355 | return rc; |
4356 | } | |
4357 | } | |
4358 | ||
4359 | return rc; | |
4360 | } | |
4361 | ||
05b308e1 BR |
4362 | /** |
4363 | * mv_print_info - Dump key info to kernel log for perusal. | |
4447d351 | 4364 | * @host: ATA host to print info about |
05b308e1 BR |
4365 | * |
4366 | * FIXME: complete this. | |
4367 | * | |
4368 | * LOCKING: | |
4369 | * Inherited from caller. | |
4370 | */ | |
4447d351 | 4371 | static void mv_print_info(struct ata_host *host) |
31961943 | 4372 | { |
4447d351 TH |
4373 | struct pci_dev *pdev = to_pci_dev(host->dev); |
4374 | struct mv_host_priv *hpriv = host->private_data; | |
44c10138 | 4375 | u8 scc; |
c1e4fe71 | 4376 | const char *scc_s, *gen; |
31961943 BR |
4377 | |
4378 | /* Use this to determine the HW stepping of the chip so we know | |
4379 | * what errata to workaround | |
4380 | */ | |
31961943 BR |
4381 | pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc); |
4382 | if (scc == 0) | |
4383 | scc_s = "SCSI"; | |
4384 | else if (scc == 0x01) | |
4385 | scc_s = "RAID"; | |
4386 | else | |
c1e4fe71 JG |
4387 | scc_s = "?"; |
4388 | ||
4389 | if (IS_GEN_I(hpriv)) | |
4390 | gen = "I"; | |
4391 | else if (IS_GEN_II(hpriv)) | |
4392 | gen = "II"; | |
4393 | else if (IS_GEN_IIE(hpriv)) | |
4394 | gen = "IIE"; | |
4395 | else | |
4396 | gen = "?"; | |
31961943 | 4397 | |
a44fec1f JP |
4398 | dev_info(&pdev->dev, "Gen-%s %u slots %u ports %s mode IRQ via %s\n", |
4399 | gen, (unsigned)MV_MAX_Q_DEPTH, host->n_ports, | |
4400 | scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx"); | |
31961943 BR |
4401 | } |
4402 | ||
05b308e1 | 4403 | /** |
f351b2d6 | 4404 | * mv_pci_init_one - handle a positive probe of a PCI Marvell host |
05b308e1 BR |
4405 | * @pdev: PCI device found |
4406 | * @ent: PCI device ID entry for the matched host | |
4407 | * | |
4408 | * LOCKING: | |
4409 | * Inherited from caller. | |
4410 | */ | |
f351b2d6 SB |
4411 | static int mv_pci_init_one(struct pci_dev *pdev, |
4412 | const struct pci_device_id *ent) | |
20f733e7 | 4413 | { |
20f733e7 | 4414 | unsigned int board_idx = (unsigned int)ent->driver_data; |
4447d351 TH |
4415 | const struct ata_port_info *ppi[] = { &mv_port_info[board_idx], NULL }; |
4416 | struct ata_host *host; | |
4417 | struct mv_host_priv *hpriv; | |
c4bc7d73 | 4418 | int n_ports, port, rc; |
20f733e7 | 4419 | |
06296a1e | 4420 | ata_print_version_once(&pdev->dev, DRV_VERSION); |
20f733e7 | 4421 | |
4447d351 TH |
4422 | /* allocate host */ |
4423 | n_ports = mv_get_hc_count(ppi[0]->flags) * MV_PORTS_PER_HC; | |
4424 | ||
4425 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); | |
4426 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); | |
4427 | if (!host || !hpriv) | |
4428 | return -ENOMEM; | |
4429 | host->private_data = hpriv; | |
f351b2d6 | 4430 | hpriv->n_ports = n_ports; |
1bfeff03 | 4431 | hpriv->board_idx = board_idx; |
4447d351 TH |
4432 | |
4433 | /* acquire resources */ | |
24dc5f33 TH |
4434 | rc = pcim_enable_device(pdev); |
4435 | if (rc) | |
20f733e7 | 4436 | return rc; |
20f733e7 | 4437 | |
0d5ff566 TH |
4438 | rc = pcim_iomap_regions(pdev, 1 << MV_PRIMARY_BAR, DRV_NAME); |
4439 | if (rc == -EBUSY) | |
24dc5f33 | 4440 | pcim_pin_device(pdev); |
0d5ff566 | 4441 | if (rc) |
24dc5f33 | 4442 | return rc; |
4447d351 | 4443 | host->iomap = pcim_iomap_table(pdev); |
f351b2d6 | 4444 | hpriv->base = host->iomap[MV_PRIMARY_BAR]; |
20f733e7 | 4445 | |
d88184fb JG |
4446 | rc = pci_go_64(pdev); |
4447 | if (rc) | |
4448 | return rc; | |
4449 | ||
da2fa9ba ML |
4450 | rc = mv_create_dma_pools(hpriv, &pdev->dev); |
4451 | if (rc) | |
4452 | return rc; | |
4453 | ||
c4bc7d73 SB |
4454 | for (port = 0; port < host->n_ports; port++) { |
4455 | struct ata_port *ap = host->ports[port]; | |
4456 | void __iomem *port_mmio = mv_port_base(hpriv->base, port); | |
4457 | unsigned int offset = port_mmio - hpriv->base; | |
4458 | ||
4459 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, -1, "mmio"); | |
4460 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, offset, "port"); | |
4461 | } | |
4462 | ||
20f733e7 | 4463 | /* initialize adapter */ |
1bfeff03 | 4464 | rc = mv_init_host(host); |
24dc5f33 TH |
4465 | if (rc) |
4466 | return rc; | |
20f733e7 | 4467 | |
6d3c30ef ML |
4468 | /* Enable message-switched interrupts, if requested */ |
4469 | if (msi && pci_enable_msi(pdev) == 0) | |
4470 | hpriv->hp_flags |= MV_HP_FLAG_MSI; | |
20f733e7 | 4471 | |
31961943 | 4472 | mv_dump_pci_cfg(pdev, 0x68); |
4447d351 | 4473 | mv_print_info(host); |
20f733e7 | 4474 | |
4447d351 | 4475 | pci_set_master(pdev); |
ea8b4db9 | 4476 | pci_try_set_mwi(pdev); |
4447d351 | 4477 | return ata_host_activate(host, pdev->irq, mv_interrupt, IRQF_SHARED, |
c5d3e45a | 4478 | IS_GEN_I(hpriv) ? &mv5_sht : &mv6_sht); |
20f733e7 | 4479 | } |
b2dec48c | 4480 | |
58eb8cd5 | 4481 | #ifdef CONFIG_PM_SLEEP |
b2dec48c SB |
4482 | static int mv_pci_device_resume(struct pci_dev *pdev) |
4483 | { | |
d8661921 | 4484 | struct ata_host *host = pci_get_drvdata(pdev); |
b2dec48c SB |
4485 | int rc; |
4486 | ||
4487 | rc = ata_pci_device_do_resume(pdev); | |
4488 | if (rc) | |
4489 | return rc; | |
4490 | ||
4491 | /* initialize adapter */ | |
4492 | rc = mv_init_host(host); | |
4493 | if (rc) | |
4494 | return rc; | |
4495 | ||
4496 | ata_host_resume(host); | |
4497 | ||
4498 | return 0; | |
4499 | } | |
4500 | #endif | |
7bb3c529 | 4501 | #endif |
20f733e7 BR |
4502 | |
4503 | static int __init mv_init(void) | |
4504 | { | |
7bb3c529 SB |
4505 | int rc = -ENODEV; |
4506 | #ifdef CONFIG_PCI | |
4507 | rc = pci_register_driver(&mv_pci_driver); | |
f351b2d6 SB |
4508 | if (rc < 0) |
4509 | return rc; | |
4510 | #endif | |
4511 | rc = platform_driver_register(&mv_platform_driver); | |
4512 | ||
4513 | #ifdef CONFIG_PCI | |
4514 | if (rc < 0) | |
4515 | pci_unregister_driver(&mv_pci_driver); | |
7bb3c529 SB |
4516 | #endif |
4517 | return rc; | |
20f733e7 BR |
4518 | } |
4519 | ||
4520 | static void __exit mv_exit(void) | |
4521 | { | |
7bb3c529 | 4522 | #ifdef CONFIG_PCI |
20f733e7 | 4523 | pci_unregister_driver(&mv_pci_driver); |
7bb3c529 | 4524 | #endif |
f351b2d6 | 4525 | platform_driver_unregister(&mv_platform_driver); |
20f733e7 BR |
4526 | } |
4527 | ||
4528 | MODULE_AUTHOR("Brett Russ"); | |
4529 | MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers"); | |
88af4bbd | 4530 | MODULE_LICENSE("GPL v2"); |
20f733e7 BR |
4531 | MODULE_DEVICE_TABLE(pci, mv_pci_tbl); |
4532 | MODULE_VERSION(DRV_VERSION); | |
17c5aab5 | 4533 | MODULE_ALIAS("platform:" DRV_NAME); |
20f733e7 BR |
4534 | |
4535 | module_init(mv_init); | |
4536 | module_exit(mv_exit); |