Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * ahci.c - AHCI SATA support | |
3 | * | |
af36d7f0 JG |
4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> |
5 | * Please ALWAYS copy linux-ide@vger.kernel.org | |
6 | * on emails. | |
7 | * | |
8 | * Copyright 2004-2005 Red Hat, Inc. | |
9 | * | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2, or (at your option) | |
14 | * any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; see the file COPYING. If not, write to | |
23 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | * | |
25 | * | |
26 | * libata documentation is available via 'make {ps|pdf}docs', | |
27 | * as Documentation/DocBook/libata.* | |
28 | * | |
29 | * AHCI hardware documentation: | |
1da177e4 | 30 | * http://www.intel.com/technology/serialata/pdf/rev1_0.pdf |
af36d7f0 | 31 | * http://www.intel.com/technology/serialata/pdf/rev1_1.pdf |
1da177e4 LT |
32 | * |
33 | */ | |
34 | ||
35 | #include <linux/kernel.h> | |
36 | #include <linux/module.h> | |
37 | #include <linux/pci.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/blkdev.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/interrupt.h> | |
42 | #include <linux/sched.h> | |
87507cfd | 43 | #include <linux/dma-mapping.h> |
a9524a76 | 44 | #include <linux/device.h> |
1da177e4 | 45 | #include <scsi/scsi_host.h> |
193515d5 | 46 | #include <scsi/scsi_cmnd.h> |
1da177e4 LT |
47 | #include <linux/libata.h> |
48 | #include <asm/io.h> | |
49 | ||
50 | #define DRV_NAME "ahci" | |
af64371a | 51 | #define DRV_VERSION "1.3" |
1da177e4 LT |
52 | |
53 | ||
54 | enum { | |
55 | AHCI_PCI_BAR = 5, | |
56 | AHCI_MAX_SG = 168, /* hardware max is 64K */ | |
57 | AHCI_DMA_BOUNDARY = 0xffffffff, | |
58 | AHCI_USE_CLUSTERING = 0, | |
12fad3f9 | 59 | AHCI_MAX_CMDS = 32, |
dd410ff1 | 60 | AHCI_CMD_SZ = 32, |
12fad3f9 | 61 | AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ, |
1da177e4 | 62 | AHCI_RX_FIS_SZ = 256, |
a0ea7328 | 63 | AHCI_CMD_TBL_CDB = 0x40, |
dd410ff1 TH |
64 | AHCI_CMD_TBL_HDR_SZ = 0x80, |
65 | AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16), | |
66 | AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS, | |
67 | AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ + | |
1da177e4 LT |
68 | AHCI_RX_FIS_SZ, |
69 | AHCI_IRQ_ON_SG = (1 << 31), | |
70 | AHCI_CMD_ATAPI = (1 << 5), | |
71 | AHCI_CMD_WRITE = (1 << 6), | |
4b10e559 | 72 | AHCI_CMD_PREFETCH = (1 << 7), |
22b49985 TH |
73 | AHCI_CMD_RESET = (1 << 8), |
74 | AHCI_CMD_CLR_BUSY = (1 << 10), | |
1da177e4 LT |
75 | |
76 | RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */ | |
78cd52d0 | 77 | RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */ |
1da177e4 LT |
78 | |
79 | board_ahci = 0, | |
bf2af2a2 | 80 | board_ahci_vt8251 = 1, |
1da177e4 LT |
81 | |
82 | /* global controller registers */ | |
83 | HOST_CAP = 0x00, /* host capabilities */ | |
84 | HOST_CTL = 0x04, /* global host control */ | |
85 | HOST_IRQ_STAT = 0x08, /* interrupt status */ | |
86 | HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */ | |
87 | HOST_VERSION = 0x10, /* AHCI spec. version compliancy */ | |
88 | ||
89 | /* HOST_CTL bits */ | |
90 | HOST_RESET = (1 << 0), /* reset controller; self-clear */ | |
91 | HOST_IRQ_EN = (1 << 1), /* global IRQ enable */ | |
92 | HOST_AHCI_EN = (1 << 31), /* AHCI enabled */ | |
93 | ||
94 | /* HOST_CAP bits */ | |
22b49985 | 95 | HOST_CAP_CLO = (1 << 24), /* Command List Override support */ |
979db803 | 96 | HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */ |
dd410ff1 | 97 | HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */ |
1da177e4 LT |
98 | |
99 | /* registers for each SATA port */ | |
100 | PORT_LST_ADDR = 0x00, /* command list DMA addr */ | |
101 | PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */ | |
102 | PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */ | |
103 | PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */ | |
104 | PORT_IRQ_STAT = 0x10, /* interrupt status */ | |
105 | PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */ | |
106 | PORT_CMD = 0x18, /* port command */ | |
107 | PORT_TFDATA = 0x20, /* taskfile data */ | |
108 | PORT_SIG = 0x24, /* device TF signature */ | |
109 | PORT_CMD_ISSUE = 0x38, /* command issue */ | |
110 | PORT_SCR = 0x28, /* SATA phy register block */ | |
111 | PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */ | |
112 | PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */ | |
113 | PORT_SCR_ERR = 0x30, /* SATA phy register: SError */ | |
114 | PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */ | |
115 | ||
116 | /* PORT_IRQ_{STAT,MASK} bits */ | |
117 | PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */ | |
118 | PORT_IRQ_TF_ERR = (1 << 30), /* task file error */ | |
119 | PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */ | |
120 | PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */ | |
121 | PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */ | |
122 | PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */ | |
123 | PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */ | |
124 | PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */ | |
125 | ||
126 | PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */ | |
127 | PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */ | |
128 | PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */ | |
129 | PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */ | |
130 | PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */ | |
131 | PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */ | |
132 | PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */ | |
133 | PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */ | |
134 | PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */ | |
135 | ||
78cd52d0 TH |
136 | PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR | |
137 | PORT_IRQ_IF_ERR | | |
138 | PORT_IRQ_CONNECT | | |
139 | PORT_IRQ_UNK_FIS, | |
140 | PORT_IRQ_ERROR = PORT_IRQ_FREEZE | | |
141 | PORT_IRQ_TF_ERR | | |
142 | PORT_IRQ_HBUS_DATA_ERR, | |
143 | DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE | | |
144 | PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS | | |
145 | PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS, | |
1da177e4 LT |
146 | |
147 | /* PORT_CMD bits */ | |
02eaa666 | 148 | PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */ |
1da177e4 LT |
149 | PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */ |
150 | PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */ | |
151 | PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */ | |
22b49985 | 152 | PORT_CMD_CLO = (1 << 3), /* Command list override */ |
1da177e4 LT |
153 | PORT_CMD_POWER_ON = (1 << 2), /* Power up device */ |
154 | PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */ | |
155 | PORT_CMD_START = (1 << 0), /* Enable port DMA engine */ | |
156 | ||
157 | PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */ | |
158 | PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */ | |
159 | PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */ | |
4b0060f4 JG |
160 | |
161 | /* hpriv->flags bits */ | |
162 | AHCI_FLAG_MSI = (1 << 0), | |
bf2af2a2 BJ |
163 | |
164 | /* ap->flags bits */ | |
165 | AHCI_FLAG_RESET_NEEDS_CLO = (1 << 24), | |
1da177e4 LT |
166 | }; |
167 | ||
168 | struct ahci_cmd_hdr { | |
169 | u32 opts; | |
170 | u32 status; | |
171 | u32 tbl_addr; | |
172 | u32 tbl_addr_hi; | |
173 | u32 reserved[4]; | |
174 | }; | |
175 | ||
176 | struct ahci_sg { | |
177 | u32 addr; | |
178 | u32 addr_hi; | |
179 | u32 reserved; | |
180 | u32 flags_size; | |
181 | }; | |
182 | ||
183 | struct ahci_host_priv { | |
184 | unsigned long flags; | |
185 | u32 cap; /* cache of HOST_CAP register */ | |
186 | u32 port_map; /* cache of HOST_PORTS_IMPL reg */ | |
187 | }; | |
188 | ||
189 | struct ahci_port_priv { | |
190 | struct ahci_cmd_hdr *cmd_slot; | |
191 | dma_addr_t cmd_slot_dma; | |
192 | void *cmd_tbl; | |
193 | dma_addr_t cmd_tbl_dma; | |
1da177e4 LT |
194 | void *rx_fis; |
195 | dma_addr_t rx_fis_dma; | |
196 | }; | |
197 | ||
198 | static u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg); | |
199 | static void ahci_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val); | |
200 | static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent); | |
9a3d9eb0 | 201 | static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc); |
1da177e4 | 202 | static irqreturn_t ahci_interrupt (int irq, void *dev_instance, struct pt_regs *regs); |
4bd00f6a | 203 | static int ahci_probe_reset(struct ata_port *ap, unsigned int *classes); |
1da177e4 | 204 | static void ahci_irq_clear(struct ata_port *ap); |
1da177e4 LT |
205 | static int ahci_port_start(struct ata_port *ap); |
206 | static void ahci_port_stop(struct ata_port *ap); | |
1da177e4 LT |
207 | static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
208 | static void ahci_qc_prep(struct ata_queued_cmd *qc); | |
209 | static u8 ahci_check_status(struct ata_port *ap); | |
78cd52d0 TH |
210 | static void ahci_freeze(struct ata_port *ap); |
211 | static void ahci_thaw(struct ata_port *ap); | |
212 | static void ahci_error_handler(struct ata_port *ap); | |
213 | static void ahci_post_internal_cmd(struct ata_queued_cmd *qc); | |
907f4678 | 214 | static void ahci_remove_one (struct pci_dev *pdev); |
1da177e4 | 215 | |
193515d5 | 216 | static struct scsi_host_template ahci_sht = { |
1da177e4 LT |
217 | .module = THIS_MODULE, |
218 | .name = DRV_NAME, | |
219 | .ioctl = ata_scsi_ioctl, | |
220 | .queuecommand = ata_scsi_queuecmd, | |
12fad3f9 TH |
221 | .change_queue_depth = ata_scsi_change_queue_depth, |
222 | .can_queue = AHCI_MAX_CMDS - 1, | |
1da177e4 LT |
223 | .this_id = ATA_SHT_THIS_ID, |
224 | .sg_tablesize = AHCI_MAX_SG, | |
1da177e4 LT |
225 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
226 | .emulated = ATA_SHT_EMULATED, | |
227 | .use_clustering = AHCI_USE_CLUSTERING, | |
228 | .proc_name = DRV_NAME, | |
229 | .dma_boundary = AHCI_DMA_BOUNDARY, | |
230 | .slave_configure = ata_scsi_slave_config, | |
231 | .bios_param = ata_std_bios_param, | |
1da177e4 LT |
232 | }; |
233 | ||
057ace5e | 234 | static const struct ata_port_operations ahci_ops = { |
1da177e4 LT |
235 | .port_disable = ata_port_disable, |
236 | ||
237 | .check_status = ahci_check_status, | |
238 | .check_altstatus = ahci_check_status, | |
1da177e4 LT |
239 | .dev_select = ata_noop_dev_select, |
240 | ||
241 | .tf_read = ahci_tf_read, | |
242 | ||
4bd00f6a | 243 | .probe_reset = ahci_probe_reset, |
1da177e4 LT |
244 | |
245 | .qc_prep = ahci_qc_prep, | |
246 | .qc_issue = ahci_qc_issue, | |
247 | ||
1da177e4 LT |
248 | .irq_handler = ahci_interrupt, |
249 | .irq_clear = ahci_irq_clear, | |
250 | ||
251 | .scr_read = ahci_scr_read, | |
252 | .scr_write = ahci_scr_write, | |
253 | ||
78cd52d0 TH |
254 | .freeze = ahci_freeze, |
255 | .thaw = ahci_thaw, | |
256 | ||
257 | .error_handler = ahci_error_handler, | |
258 | .post_internal_cmd = ahci_post_internal_cmd, | |
259 | ||
1da177e4 LT |
260 | .port_start = ahci_port_start, |
261 | .port_stop = ahci_port_stop, | |
1da177e4 LT |
262 | }; |
263 | ||
98ac62de | 264 | static const struct ata_port_info ahci_port_info[] = { |
1da177e4 LT |
265 | /* board_ahci */ |
266 | { | |
267 | .sht = &ahci_sht, | |
268 | .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | | |
4bd00f6a | 269 | ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, |
7da79312 | 270 | .pio_mask = 0x1f, /* pio0-4 */ |
1da177e4 LT |
271 | .udma_mask = 0x7f, /* udma0-6 ; FIXME */ |
272 | .port_ops = &ahci_ops, | |
273 | }, | |
bf2af2a2 BJ |
274 | /* board_ahci_vt8251 */ |
275 | { | |
276 | .sht = &ahci_sht, | |
277 | .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | | |
278 | ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | | |
279 | AHCI_FLAG_RESET_NEEDS_CLO, | |
280 | .pio_mask = 0x1f, /* pio0-4 */ | |
281 | .udma_mask = 0x7f, /* udma0-6 ; FIXME */ | |
282 | .port_ops = &ahci_ops, | |
283 | }, | |
1da177e4 LT |
284 | }; |
285 | ||
3b7d697d | 286 | static const struct pci_device_id ahci_pci_tbl[] = { |
1da177e4 LT |
287 | { PCI_VENDOR_ID_INTEL, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
288 | board_ahci }, /* ICH6 */ | |
289 | { PCI_VENDOR_ID_INTEL, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
290 | board_ahci }, /* ICH6M */ | |
291 | { PCI_VENDOR_ID_INTEL, 0x27c1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
292 | board_ahci }, /* ICH7 */ | |
293 | { PCI_VENDOR_ID_INTEL, 0x27c5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
294 | board_ahci }, /* ICH7M */ | |
295 | { PCI_VENDOR_ID_INTEL, 0x27c3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
296 | board_ahci }, /* ICH7R */ | |
297 | { PCI_VENDOR_ID_AL, 0x5288, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
298 | board_ahci }, /* ULi M5288 */ | |
680d3235 JG |
299 | { PCI_VENDOR_ID_INTEL, 0x2681, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
300 | board_ahci }, /* ESB2 */ | |
301 | { PCI_VENDOR_ID_INTEL, 0x2682, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
302 | board_ahci }, /* ESB2 */ | |
303 | { PCI_VENDOR_ID_INTEL, 0x2683, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
304 | board_ahci }, /* ESB2 */ | |
3db368f7 JG |
305 | { PCI_VENDOR_ID_INTEL, 0x27c6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
306 | board_ahci }, /* ICH7-M DH */ | |
f285757c JG |
307 | { PCI_VENDOR_ID_INTEL, 0x2821, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
308 | board_ahci }, /* ICH8 */ | |
309 | { PCI_VENDOR_ID_INTEL, 0x2822, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
310 | board_ahci }, /* ICH8 */ | |
311 | { PCI_VENDOR_ID_INTEL, 0x2824, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
312 | board_ahci }, /* ICH8 */ | |
313 | { PCI_VENDOR_ID_INTEL, 0x2829, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
314 | board_ahci }, /* ICH8M */ | |
315 | { PCI_VENDOR_ID_INTEL, 0x282a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
316 | board_ahci }, /* ICH8M */ | |
bd12097c JG |
317 | { 0x197b, 0x2360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
318 | board_ahci }, /* JMicron JMB360 */ | |
9220a2d0 JG |
319 | { 0x197b, 0x2363, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
320 | board_ahci }, /* JMicron JMB363 */ | |
8b316a39 JG |
321 | { PCI_VENDOR_ID_ATI, 0x4380, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
322 | board_ahci }, /* ATI SB600 non-raid */ | |
323 | { PCI_VENDOR_ID_ATI, 0x4381, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
324 | board_ahci }, /* ATI SB600 raid */ | |
bf2af2a2 BJ |
325 | { PCI_VENDOR_ID_VIA, 0x3349, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
326 | board_ahci_vt8251 }, /* VIA VT8251 */ | |
1da177e4 LT |
327 | { } /* terminate list */ |
328 | }; | |
329 | ||
330 | ||
331 | static struct pci_driver ahci_pci_driver = { | |
332 | .name = DRV_NAME, | |
333 | .id_table = ahci_pci_tbl, | |
334 | .probe = ahci_init_one, | |
907f4678 | 335 | .remove = ahci_remove_one, |
1da177e4 LT |
336 | }; |
337 | ||
338 | ||
339 | static inline unsigned long ahci_port_base_ul (unsigned long base, unsigned int port) | |
340 | { | |
341 | return base + 0x100 + (port * 0x80); | |
342 | } | |
343 | ||
ea6ba10b | 344 | static inline void __iomem *ahci_port_base (void __iomem *base, unsigned int port) |
1da177e4 | 345 | { |
ea6ba10b | 346 | return (void __iomem *) ahci_port_base_ul((unsigned long)base, port); |
1da177e4 LT |
347 | } |
348 | ||
1da177e4 LT |
349 | static int ahci_port_start(struct ata_port *ap) |
350 | { | |
351 | struct device *dev = ap->host_set->dev; | |
352 | struct ahci_host_priv *hpriv = ap->host_set->private_data; | |
353 | struct ahci_port_priv *pp; | |
ea6ba10b JG |
354 | void __iomem *mmio = ap->host_set->mmio_base; |
355 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); | |
356 | void *mem; | |
1da177e4 | 357 | dma_addr_t mem_dma; |
6037d6bb | 358 | int rc; |
1da177e4 | 359 | |
1da177e4 | 360 | pp = kmalloc(sizeof(*pp), GFP_KERNEL); |
0a139e79 TH |
361 | if (!pp) |
362 | return -ENOMEM; | |
1da177e4 LT |
363 | memset(pp, 0, sizeof(*pp)); |
364 | ||
6037d6bb JG |
365 | rc = ata_pad_alloc(ap, dev); |
366 | if (rc) { | |
cedc9a47 | 367 | kfree(pp); |
6037d6bb | 368 | return rc; |
cedc9a47 JG |
369 | } |
370 | ||
1da177e4 LT |
371 | mem = dma_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma, GFP_KERNEL); |
372 | if (!mem) { | |
6037d6bb | 373 | ata_pad_free(ap, dev); |
0a139e79 TH |
374 | kfree(pp); |
375 | return -ENOMEM; | |
1da177e4 LT |
376 | } |
377 | memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ); | |
378 | ||
379 | /* | |
380 | * First item in chunk of DMA memory: 32-slot command table, | |
381 | * 32 bytes each in size | |
382 | */ | |
383 | pp->cmd_slot = mem; | |
384 | pp->cmd_slot_dma = mem_dma; | |
385 | ||
386 | mem += AHCI_CMD_SLOT_SZ; | |
387 | mem_dma += AHCI_CMD_SLOT_SZ; | |
388 | ||
389 | /* | |
390 | * Second item: Received-FIS area | |
391 | */ | |
392 | pp->rx_fis = mem; | |
393 | pp->rx_fis_dma = mem_dma; | |
394 | ||
395 | mem += AHCI_RX_FIS_SZ; | |
396 | mem_dma += AHCI_RX_FIS_SZ; | |
397 | ||
398 | /* | |
399 | * Third item: data area for storing a single command | |
400 | * and its scatter-gather table | |
401 | */ | |
402 | pp->cmd_tbl = mem; | |
403 | pp->cmd_tbl_dma = mem_dma; | |
404 | ||
1da177e4 LT |
405 | ap->private_data = pp; |
406 | ||
407 | if (hpriv->cap & HOST_CAP_64) | |
408 | writel((pp->cmd_slot_dma >> 16) >> 16, port_mmio + PORT_LST_ADDR_HI); | |
409 | writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR); | |
410 | readl(port_mmio + PORT_LST_ADDR); /* flush */ | |
411 | ||
412 | if (hpriv->cap & HOST_CAP_64) | |
413 | writel((pp->rx_fis_dma >> 16) >> 16, port_mmio + PORT_FIS_ADDR_HI); | |
414 | writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR); | |
415 | readl(port_mmio + PORT_FIS_ADDR); /* flush */ | |
416 | ||
417 | writel(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX | | |
418 | PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP | | |
419 | PORT_CMD_START, port_mmio + PORT_CMD); | |
420 | readl(port_mmio + PORT_CMD); /* flush */ | |
421 | ||
422 | return 0; | |
1da177e4 LT |
423 | } |
424 | ||
425 | ||
426 | static void ahci_port_stop(struct ata_port *ap) | |
427 | { | |
428 | struct device *dev = ap->host_set->dev; | |
429 | struct ahci_port_priv *pp = ap->private_data; | |
ea6ba10b JG |
430 | void __iomem *mmio = ap->host_set->mmio_base; |
431 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); | |
1da177e4 LT |
432 | u32 tmp; |
433 | ||
434 | tmp = readl(port_mmio + PORT_CMD); | |
435 | tmp &= ~(PORT_CMD_START | PORT_CMD_FIS_RX); | |
436 | writel(tmp, port_mmio + PORT_CMD); | |
437 | readl(port_mmio + PORT_CMD); /* flush */ | |
438 | ||
439 | /* spec says 500 msecs for each PORT_CMD_{START,FIS_RX} bit, so | |
440 | * this is slightly incorrect. | |
441 | */ | |
442 | msleep(500); | |
443 | ||
444 | ap->private_data = NULL; | |
445 | dma_free_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, | |
446 | pp->cmd_slot, pp->cmd_slot_dma); | |
6037d6bb | 447 | ata_pad_free(ap, dev); |
1da177e4 | 448 | kfree(pp); |
1da177e4 LT |
449 | } |
450 | ||
451 | static u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg_in) | |
452 | { | |
453 | unsigned int sc_reg; | |
454 | ||
455 | switch (sc_reg_in) { | |
456 | case SCR_STATUS: sc_reg = 0; break; | |
457 | case SCR_CONTROL: sc_reg = 1; break; | |
458 | case SCR_ERROR: sc_reg = 2; break; | |
459 | case SCR_ACTIVE: sc_reg = 3; break; | |
460 | default: | |
461 | return 0xffffffffU; | |
462 | } | |
463 | ||
1e4f2a96 | 464 | return readl((void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4)); |
1da177e4 LT |
465 | } |
466 | ||
467 | ||
468 | static void ahci_scr_write (struct ata_port *ap, unsigned int sc_reg_in, | |
469 | u32 val) | |
470 | { | |
471 | unsigned int sc_reg; | |
472 | ||
473 | switch (sc_reg_in) { | |
474 | case SCR_STATUS: sc_reg = 0; break; | |
475 | case SCR_CONTROL: sc_reg = 1; break; | |
476 | case SCR_ERROR: sc_reg = 2; break; | |
477 | case SCR_ACTIVE: sc_reg = 3; break; | |
478 | default: | |
479 | return; | |
480 | } | |
481 | ||
1e4f2a96 | 482 | writel(val, (void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4)); |
1da177e4 LT |
483 | } |
484 | ||
7c76d1e8 TH |
485 | static int ahci_stop_engine(struct ata_port *ap) |
486 | { | |
487 | void __iomem *mmio = ap->host_set->mmio_base; | |
488 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); | |
489 | int work; | |
490 | u32 tmp; | |
491 | ||
492 | tmp = readl(port_mmio + PORT_CMD); | |
493 | tmp &= ~PORT_CMD_START; | |
494 | writel(tmp, port_mmio + PORT_CMD); | |
495 | ||
496 | /* wait for engine to stop. TODO: this could be | |
497 | * as long as 500 msec | |
498 | */ | |
499 | work = 1000; | |
500 | while (work-- > 0) { | |
501 | tmp = readl(port_mmio + PORT_CMD); | |
502 | if ((tmp & PORT_CMD_LIST_ON) == 0) | |
503 | return 0; | |
504 | udelay(10); | |
505 | } | |
506 | ||
507 | return -EIO; | |
508 | } | |
509 | ||
510 | static void ahci_start_engine(struct ata_port *ap) | |
511 | { | |
512 | void __iomem *mmio = ap->host_set->mmio_base; | |
513 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); | |
514 | u32 tmp; | |
515 | ||
516 | tmp = readl(port_mmio + PORT_CMD); | |
517 | tmp |= PORT_CMD_START; | |
518 | writel(tmp, port_mmio + PORT_CMD); | |
519 | readl(port_mmio + PORT_CMD); /* flush */ | |
520 | } | |
521 | ||
422b7595 | 522 | static unsigned int ahci_dev_classify(struct ata_port *ap) |
1da177e4 LT |
523 | { |
524 | void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr; | |
525 | struct ata_taskfile tf; | |
422b7595 TH |
526 | u32 tmp; |
527 | ||
528 | tmp = readl(port_mmio + PORT_SIG); | |
529 | tf.lbah = (tmp >> 24) & 0xff; | |
530 | tf.lbam = (tmp >> 16) & 0xff; | |
531 | tf.lbal = (tmp >> 8) & 0xff; | |
532 | tf.nsect = (tmp) & 0xff; | |
533 | ||
534 | return ata_dev_classify(&tf); | |
535 | } | |
536 | ||
12fad3f9 TH |
537 | static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag, |
538 | u32 opts) | |
cc9278ed | 539 | { |
12fad3f9 TH |
540 | dma_addr_t cmd_tbl_dma; |
541 | ||
542 | cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ; | |
543 | ||
544 | pp->cmd_slot[tag].opts = cpu_to_le32(opts); | |
545 | pp->cmd_slot[tag].status = 0; | |
546 | pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff); | |
547 | pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16); | |
cc9278ed TH |
548 | } |
549 | ||
bf2af2a2 | 550 | static int ahci_clo(struct ata_port *ap) |
4658f79b | 551 | { |
bf2af2a2 | 552 | void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr; |
4658f79b | 553 | struct ahci_host_priv *hpriv = ap->host_set->private_data; |
bf2af2a2 BJ |
554 | u32 tmp; |
555 | ||
556 | if (!(hpriv->cap & HOST_CAP_CLO)) | |
557 | return -EOPNOTSUPP; | |
558 | ||
559 | tmp = readl(port_mmio + PORT_CMD); | |
560 | tmp |= PORT_CMD_CLO; | |
561 | writel(tmp, port_mmio + PORT_CMD); | |
562 | ||
563 | tmp = ata_wait_register(port_mmio + PORT_CMD, | |
564 | PORT_CMD_CLO, PORT_CMD_CLO, 1, 500); | |
565 | if (tmp & PORT_CMD_CLO) | |
566 | return -EIO; | |
567 | ||
568 | return 0; | |
569 | } | |
570 | ||
571 | static int ahci_softreset(struct ata_port *ap, unsigned int *class) | |
572 | { | |
4658f79b TH |
573 | struct ahci_port_priv *pp = ap->private_data; |
574 | void __iomem *mmio = ap->host_set->mmio_base; | |
575 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); | |
576 | const u32 cmd_fis_len = 5; /* five dwords */ | |
577 | const char *reason = NULL; | |
578 | struct ata_taskfile tf; | |
75fe1806 | 579 | u32 tmp; |
4658f79b TH |
580 | u8 *fis; |
581 | int rc; | |
582 | ||
583 | DPRINTK("ENTER\n"); | |
584 | ||
81952c54 | 585 | if (ata_port_offline(ap)) { |
c2a65852 TH |
586 | DPRINTK("PHY reports no device\n"); |
587 | *class = ATA_DEV_NONE; | |
588 | return 0; | |
589 | } | |
590 | ||
4658f79b TH |
591 | /* prepare for SRST (AHCI-1.1 10.4.1) */ |
592 | rc = ahci_stop_engine(ap); | |
593 | if (rc) { | |
594 | reason = "failed to stop engine"; | |
595 | goto fail_restart; | |
596 | } | |
597 | ||
598 | /* check BUSY/DRQ, perform Command List Override if necessary */ | |
599 | ahci_tf_read(ap, &tf); | |
600 | if (tf.command & (ATA_BUSY | ATA_DRQ)) { | |
bf2af2a2 | 601 | rc = ahci_clo(ap); |
4658f79b | 602 | |
bf2af2a2 BJ |
603 | if (rc == -EOPNOTSUPP) { |
604 | reason = "port busy but CLO unavailable"; | |
605 | goto fail_restart; | |
606 | } else if (rc) { | |
607 | reason = "port busy but CLO failed"; | |
4658f79b TH |
608 | goto fail_restart; |
609 | } | |
610 | } | |
611 | ||
612 | /* restart engine */ | |
613 | ahci_start_engine(ap); | |
614 | ||
3373efd8 | 615 | ata_tf_init(ap->device, &tf); |
4658f79b TH |
616 | fis = pp->cmd_tbl; |
617 | ||
618 | /* issue the first D2H Register FIS */ | |
12fad3f9 TH |
619 | ahci_fill_cmd_slot(pp, 0, |
620 | cmd_fis_len | AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY); | |
4658f79b TH |
621 | |
622 | tf.ctl |= ATA_SRST; | |
623 | ata_tf_to_fis(&tf, fis, 0); | |
624 | fis[1] &= ~(1 << 7); /* turn off Command FIS bit */ | |
625 | ||
626 | writel(1, port_mmio + PORT_CMD_ISSUE); | |
4658f79b | 627 | |
75fe1806 TH |
628 | tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1, 1, 500); |
629 | if (tmp & 0x1) { | |
4658f79b TH |
630 | rc = -EIO; |
631 | reason = "1st FIS failed"; | |
632 | goto fail; | |
633 | } | |
634 | ||
635 | /* spec says at least 5us, but be generous and sleep for 1ms */ | |
636 | msleep(1); | |
637 | ||
638 | /* issue the second D2H Register FIS */ | |
12fad3f9 | 639 | ahci_fill_cmd_slot(pp, 0, cmd_fis_len); |
4658f79b TH |
640 | |
641 | tf.ctl &= ~ATA_SRST; | |
642 | ata_tf_to_fis(&tf, fis, 0); | |
643 | fis[1] &= ~(1 << 7); /* turn off Command FIS bit */ | |
644 | ||
645 | writel(1, port_mmio + PORT_CMD_ISSUE); | |
646 | readl(port_mmio + PORT_CMD_ISSUE); /* flush */ | |
647 | ||
648 | /* spec mandates ">= 2ms" before checking status. | |
649 | * We wait 150ms, because that was the magic delay used for | |
650 | * ATAPI devices in Hale Landis's ATADRVR, for the period of time | |
651 | * between when the ATA command register is written, and then | |
652 | * status is checked. Because waiting for "a while" before | |
653 | * checking status is fine, post SRST, we perform this magic | |
654 | * delay here as well. | |
655 | */ | |
656 | msleep(150); | |
657 | ||
658 | *class = ATA_DEV_NONE; | |
81952c54 | 659 | if (ata_port_online(ap)) { |
4658f79b TH |
660 | if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) { |
661 | rc = -EIO; | |
662 | reason = "device not ready"; | |
663 | goto fail; | |
664 | } | |
665 | *class = ahci_dev_classify(ap); | |
666 | } | |
667 | ||
668 | DPRINTK("EXIT, class=%u\n", *class); | |
669 | return 0; | |
670 | ||
671 | fail_restart: | |
672 | ahci_start_engine(ap); | |
673 | fail: | |
f15a1daf | 674 | ata_port_printk(ap, KERN_ERR, "softreset failed (%s)\n", reason); |
4658f79b TH |
675 | return rc; |
676 | } | |
677 | ||
2bf2cb26 | 678 | static int ahci_hardreset(struct ata_port *ap, unsigned int *class) |
422b7595 | 679 | { |
4bd00f6a TH |
680 | int rc; |
681 | ||
682 | DPRINTK("ENTER\n"); | |
1da177e4 | 683 | |
e0bfd149 | 684 | ahci_stop_engine(ap); |
2bf2cb26 | 685 | rc = sata_std_hardreset(ap, class); |
e0bfd149 | 686 | ahci_start_engine(ap); |
1da177e4 | 687 | |
81952c54 | 688 | if (rc == 0 && ata_port_online(ap)) |
4bd00f6a TH |
689 | *class = ahci_dev_classify(ap); |
690 | if (*class == ATA_DEV_UNKNOWN) | |
691 | *class = ATA_DEV_NONE; | |
1da177e4 | 692 | |
4bd00f6a TH |
693 | DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class); |
694 | return rc; | |
695 | } | |
696 | ||
697 | static void ahci_postreset(struct ata_port *ap, unsigned int *class) | |
698 | { | |
699 | void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr; | |
700 | u32 new_tmp, tmp; | |
701 | ||
702 | ata_std_postreset(ap, class); | |
02eaa666 JG |
703 | |
704 | /* Make sure port's ATAPI bit is set appropriately */ | |
705 | new_tmp = tmp = readl(port_mmio + PORT_CMD); | |
4bd00f6a | 706 | if (*class == ATA_DEV_ATAPI) |
02eaa666 JG |
707 | new_tmp |= PORT_CMD_ATAPI; |
708 | else | |
709 | new_tmp &= ~PORT_CMD_ATAPI; | |
710 | if (new_tmp != tmp) { | |
711 | writel(new_tmp, port_mmio + PORT_CMD); | |
712 | readl(port_mmio + PORT_CMD); /* flush */ | |
713 | } | |
1da177e4 LT |
714 | } |
715 | ||
4bd00f6a TH |
716 | static int ahci_probe_reset(struct ata_port *ap, unsigned int *classes) |
717 | { | |
bf2af2a2 BJ |
718 | if ((ap->flags & AHCI_FLAG_RESET_NEEDS_CLO) && |
719 | (ata_busy_wait(ap, ATA_BUSY, 1000) & ATA_BUSY)) { | |
720 | /* ATA_BUSY hasn't cleared, so send a CLO */ | |
721 | ahci_clo(ap); | |
722 | } | |
723 | ||
4658f79b TH |
724 | return ata_drive_probe_reset(ap, ata_std_probeinit, |
725 | ahci_softreset, ahci_hardreset, | |
4bd00f6a TH |
726 | ahci_postreset, classes); |
727 | } | |
728 | ||
1da177e4 LT |
729 | static u8 ahci_check_status(struct ata_port *ap) |
730 | { | |
1e4f2a96 | 731 | void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr; |
1da177e4 LT |
732 | |
733 | return readl(mmio + PORT_TFDATA) & 0xFF; | |
734 | } | |
735 | ||
1da177e4 LT |
736 | static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf) |
737 | { | |
738 | struct ahci_port_priv *pp = ap->private_data; | |
739 | u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG; | |
740 | ||
741 | ata_tf_from_fis(d2h_fis, tf); | |
742 | } | |
743 | ||
12fad3f9 | 744 | static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl) |
1da177e4 | 745 | { |
cedc9a47 JG |
746 | struct scatterlist *sg; |
747 | struct ahci_sg *ahci_sg; | |
828d09de | 748 | unsigned int n_sg = 0; |
1da177e4 LT |
749 | |
750 | VPRINTK("ENTER\n"); | |
751 | ||
752 | /* | |
753 | * Next, the S/G list. | |
754 | */ | |
12fad3f9 | 755 | ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ; |
cedc9a47 JG |
756 | ata_for_each_sg(sg, qc) { |
757 | dma_addr_t addr = sg_dma_address(sg); | |
758 | u32 sg_len = sg_dma_len(sg); | |
759 | ||
760 | ahci_sg->addr = cpu_to_le32(addr & 0xffffffff); | |
761 | ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16); | |
762 | ahci_sg->flags_size = cpu_to_le32(sg_len - 1); | |
828d09de | 763 | |
cedc9a47 | 764 | ahci_sg++; |
828d09de | 765 | n_sg++; |
1da177e4 | 766 | } |
828d09de JG |
767 | |
768 | return n_sg; | |
1da177e4 LT |
769 | } |
770 | ||
771 | static void ahci_qc_prep(struct ata_queued_cmd *qc) | |
772 | { | |
a0ea7328 JG |
773 | struct ata_port *ap = qc->ap; |
774 | struct ahci_port_priv *pp = ap->private_data; | |
cc9278ed | 775 | int is_atapi = is_atapi_taskfile(&qc->tf); |
12fad3f9 | 776 | void *cmd_tbl; |
1da177e4 LT |
777 | u32 opts; |
778 | const u32 cmd_fis_len = 5; /* five dwords */ | |
828d09de | 779 | unsigned int n_elem; |
1da177e4 | 780 | |
1da177e4 LT |
781 | /* |
782 | * Fill in command table information. First, the header, | |
783 | * a SATA Register - Host to Device command FIS. | |
784 | */ | |
12fad3f9 TH |
785 | cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ; |
786 | ||
787 | ata_tf_to_fis(&qc->tf, cmd_tbl, 0); | |
cc9278ed | 788 | if (is_atapi) { |
12fad3f9 TH |
789 | memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32); |
790 | memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len); | |
a0ea7328 | 791 | } |
1da177e4 | 792 | |
cc9278ed TH |
793 | n_elem = 0; |
794 | if (qc->flags & ATA_QCFLAG_DMAMAP) | |
12fad3f9 | 795 | n_elem = ahci_fill_sg(qc, cmd_tbl); |
1da177e4 | 796 | |
cc9278ed TH |
797 | /* |
798 | * Fill in command slot information. | |
799 | */ | |
800 | opts = cmd_fis_len | n_elem << 16; | |
801 | if (qc->tf.flags & ATA_TFLAG_WRITE) | |
802 | opts |= AHCI_CMD_WRITE; | |
803 | if (is_atapi) | |
4b10e559 | 804 | opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH; |
828d09de | 805 | |
12fad3f9 | 806 | ahci_fill_cmd_slot(pp, qc->tag, opts); |
1da177e4 LT |
807 | } |
808 | ||
78cd52d0 | 809 | static void ahci_error_intr(struct ata_port *ap, u32 irq_stat) |
1da177e4 | 810 | { |
78cd52d0 TH |
811 | struct ahci_port_priv *pp = ap->private_data; |
812 | struct ata_eh_info *ehi = &ap->eh_info; | |
813 | unsigned int err_mask = 0, action = 0; | |
814 | struct ata_queued_cmd *qc; | |
815 | u32 serror; | |
1da177e4 | 816 | |
78cd52d0 | 817 | ata_ehi_clear_desc(ehi); |
1da177e4 | 818 | |
78cd52d0 TH |
819 | /* AHCI needs SError cleared; otherwise, it might lock up */ |
820 | serror = ahci_scr_read(ap, SCR_ERROR); | |
821 | ahci_scr_write(ap, SCR_ERROR, serror); | |
1da177e4 | 822 | |
78cd52d0 TH |
823 | /* analyze @irq_stat */ |
824 | ata_ehi_push_desc(ehi, "irq_stat 0x%08x", irq_stat); | |
825 | ||
826 | if (irq_stat & PORT_IRQ_TF_ERR) | |
827 | err_mask |= AC_ERR_DEV; | |
828 | ||
829 | if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) { | |
830 | err_mask |= AC_ERR_HOST_BUS; | |
831 | action |= ATA_EH_SOFTRESET; | |
1da177e4 LT |
832 | } |
833 | ||
78cd52d0 TH |
834 | if (irq_stat & PORT_IRQ_IF_ERR) { |
835 | err_mask |= AC_ERR_ATA_BUS; | |
836 | action |= ATA_EH_SOFTRESET; | |
837 | ata_ehi_push_desc(ehi, ", interface fatal error"); | |
838 | } | |
1da177e4 | 839 | |
78cd52d0 TH |
840 | if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) { |
841 | err_mask |= AC_ERR_ATA_BUS; | |
842 | action |= ATA_EH_SOFTRESET; | |
843 | ata_ehi_push_desc(ehi, ", %s", irq_stat & PORT_IRQ_CONNECT ? | |
844 | "connection status changed" : "PHY RDY changed"); | |
845 | } | |
846 | ||
847 | if (irq_stat & PORT_IRQ_UNK_FIS) { | |
848 | u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK); | |
1da177e4 | 849 | |
78cd52d0 TH |
850 | err_mask |= AC_ERR_HSM; |
851 | action |= ATA_EH_SOFTRESET; | |
852 | ata_ehi_push_desc(ehi, ", unknown FIS %08x %08x %08x %08x", | |
853 | unk[0], unk[1], unk[2], unk[3]); | |
854 | } | |
1da177e4 | 855 | |
78cd52d0 TH |
856 | /* okay, let's hand over to EH */ |
857 | ehi->serror |= serror; | |
858 | ehi->action |= action; | |
b8f6153e | 859 | |
1da177e4 | 860 | qc = ata_qc_from_tag(ap, ap->active_tag); |
78cd52d0 TH |
861 | if (qc) |
862 | qc->err_mask |= err_mask; | |
863 | else | |
864 | ehi->err_mask |= err_mask; | |
a72ec4ce | 865 | |
78cd52d0 TH |
866 | if (irq_stat & PORT_IRQ_FREEZE) |
867 | ata_port_freeze(ap); | |
868 | else | |
869 | ata_port_abort(ap); | |
1da177e4 LT |
870 | } |
871 | ||
78cd52d0 | 872 | static void ahci_host_intr(struct ata_port *ap) |
1da177e4 | 873 | { |
ea6ba10b JG |
874 | void __iomem *mmio = ap->host_set->mmio_base; |
875 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); | |
12fad3f9 TH |
876 | struct ata_eh_info *ehi = &ap->eh_info; |
877 | u32 status, qc_active; | |
878 | int rc; | |
1da177e4 LT |
879 | |
880 | status = readl(port_mmio + PORT_IRQ_STAT); | |
881 | writel(status, port_mmio + PORT_IRQ_STAT); | |
882 | ||
78cd52d0 TH |
883 | if (unlikely(status & PORT_IRQ_ERROR)) { |
884 | ahci_error_intr(ap, status); | |
885 | return; | |
1da177e4 LT |
886 | } |
887 | ||
12fad3f9 TH |
888 | if (ap->sactive) |
889 | qc_active = readl(port_mmio + PORT_SCR_ACT); | |
890 | else | |
891 | qc_active = readl(port_mmio + PORT_CMD_ISSUE); | |
892 | ||
893 | rc = ata_qc_complete_multiple(ap, qc_active, NULL); | |
894 | if (rc > 0) | |
895 | return; | |
896 | if (rc < 0) { | |
897 | ehi->err_mask |= AC_ERR_HSM; | |
898 | ehi->action |= ATA_EH_SOFTRESET; | |
899 | ata_port_freeze(ap); | |
900 | return; | |
1da177e4 LT |
901 | } |
902 | ||
2a3917a8 TH |
903 | /* hmmm... a spurious interupt */ |
904 | ||
12fad3f9 TH |
905 | /* some devices send D2H reg with I bit set during NCQ command phase */ |
906 | if (ap->sactive && status & PORT_IRQ_D2H_REG_FIS) | |
907 | return; | |
908 | ||
2a3917a8 TH |
909 | /* ignore interim PIO setup fis interrupts */ |
910 | if (ata_tag_valid(ap->active_tag)) { | |
911 | struct ata_queued_cmd *qc = | |
912 | ata_qc_from_tag(ap, ap->active_tag); | |
913 | ||
914 | if (qc && qc->tf.protocol == ATA_PROT_PIO && | |
915 | (status & PORT_IRQ_PIOS_FIS)) | |
916 | return; | |
917 | } | |
918 | ||
78cd52d0 TH |
919 | if (ata_ratelimit()) |
920 | ata_port_printk(ap, KERN_INFO, "spurious interrupt " | |
12fad3f9 TH |
921 | "(irq_stat 0x%x active_tag %d sactive 0x%x)\n", |
922 | status, ap->active_tag, ap->sactive); | |
1da177e4 LT |
923 | } |
924 | ||
925 | static void ahci_irq_clear(struct ata_port *ap) | |
926 | { | |
927 | /* TODO */ | |
928 | } | |
929 | ||
12fad3f9 | 930 | static irqreturn_t ahci_interrupt(int irq, void *dev_instance, struct pt_regs *regs) |
1da177e4 LT |
931 | { |
932 | struct ata_host_set *host_set = dev_instance; | |
933 | struct ahci_host_priv *hpriv; | |
934 | unsigned int i, handled = 0; | |
ea6ba10b | 935 | void __iomem *mmio; |
1da177e4 LT |
936 | u32 irq_stat, irq_ack = 0; |
937 | ||
938 | VPRINTK("ENTER\n"); | |
939 | ||
940 | hpriv = host_set->private_data; | |
941 | mmio = host_set->mmio_base; | |
942 | ||
943 | /* sigh. 0xffffffff is a valid return from h/w */ | |
944 | irq_stat = readl(mmio + HOST_IRQ_STAT); | |
945 | irq_stat &= hpriv->port_map; | |
946 | if (!irq_stat) | |
947 | return IRQ_NONE; | |
948 | ||
949 | spin_lock(&host_set->lock); | |
950 | ||
951 | for (i = 0; i < host_set->n_ports; i++) { | |
952 | struct ata_port *ap; | |
1da177e4 | 953 | |
67846b30 JG |
954 | if (!(irq_stat & (1 << i))) |
955 | continue; | |
956 | ||
1da177e4 | 957 | ap = host_set->ports[i]; |
67846b30 | 958 | if (ap) { |
78cd52d0 | 959 | ahci_host_intr(ap); |
67846b30 JG |
960 | VPRINTK("port %u\n", i); |
961 | } else { | |
962 | VPRINTK("port %u (no irq)\n", i); | |
6971ed1f TH |
963 | if (ata_ratelimit()) |
964 | dev_printk(KERN_WARNING, host_set->dev, | |
a9524a76 | 965 | "interrupt on disabled port %u\n", i); |
1da177e4 | 966 | } |
67846b30 JG |
967 | |
968 | irq_ack |= (1 << i); | |
1da177e4 LT |
969 | } |
970 | ||
971 | if (irq_ack) { | |
972 | writel(irq_ack, mmio + HOST_IRQ_STAT); | |
973 | handled = 1; | |
974 | } | |
975 | ||
78cd52d0 | 976 | spin_unlock(&host_set->lock); |
1da177e4 LT |
977 | |
978 | VPRINTK("EXIT\n"); | |
979 | ||
980 | return IRQ_RETVAL(handled); | |
981 | } | |
982 | ||
9a3d9eb0 | 983 | static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc) |
1da177e4 LT |
984 | { |
985 | struct ata_port *ap = qc->ap; | |
ea6ba10b | 986 | void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr; |
1da177e4 | 987 | |
12fad3f9 TH |
988 | if (qc->tf.protocol == ATA_PROT_NCQ) |
989 | writel(1 << qc->tag, port_mmio + PORT_SCR_ACT); | |
990 | writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE); | |
1da177e4 LT |
991 | readl(port_mmio + PORT_CMD_ISSUE); /* flush */ |
992 | ||
993 | return 0; | |
994 | } | |
995 | ||
78cd52d0 TH |
996 | static void ahci_freeze(struct ata_port *ap) |
997 | { | |
998 | void __iomem *mmio = ap->host_set->mmio_base; | |
999 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); | |
1000 | ||
1001 | /* turn IRQ off */ | |
1002 | writel(0, port_mmio + PORT_IRQ_MASK); | |
1003 | } | |
1004 | ||
1005 | static void ahci_thaw(struct ata_port *ap) | |
1006 | { | |
1007 | void __iomem *mmio = ap->host_set->mmio_base; | |
1008 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); | |
1009 | u32 tmp; | |
1010 | ||
1011 | /* clear IRQ */ | |
1012 | tmp = readl(port_mmio + PORT_IRQ_STAT); | |
1013 | writel(tmp, port_mmio + PORT_IRQ_STAT); | |
1014 | writel(1 << ap->id, mmio + HOST_IRQ_STAT); | |
1015 | ||
1016 | /* turn IRQ back on */ | |
1017 | writel(DEF_PORT_IRQ, port_mmio + PORT_IRQ_MASK); | |
1018 | } | |
1019 | ||
1020 | static void ahci_error_handler(struct ata_port *ap) | |
1021 | { | |
1022 | if (!(ap->flags & ATA_FLAG_FROZEN)) { | |
1023 | /* restart engine */ | |
1024 | ahci_stop_engine(ap); | |
1025 | ahci_start_engine(ap); | |
1026 | } | |
1027 | ||
1028 | /* perform recovery */ | |
1029 | ata_do_eh(ap, ahci_softreset, ahci_hardreset, ahci_postreset); | |
1030 | } | |
1031 | ||
1032 | static void ahci_post_internal_cmd(struct ata_queued_cmd *qc) | |
1033 | { | |
1034 | struct ata_port *ap = qc->ap; | |
1035 | ||
1036 | if (qc->flags & ATA_QCFLAG_FAILED) | |
1037 | qc->err_mask |= AC_ERR_OTHER; | |
1038 | ||
1039 | if (qc->err_mask) { | |
1040 | /* make DMA engine forget about the failed command */ | |
1041 | ahci_stop_engine(ap); | |
1042 | ahci_start_engine(ap); | |
1043 | } | |
1044 | } | |
1045 | ||
1da177e4 LT |
1046 | static void ahci_setup_port(struct ata_ioports *port, unsigned long base, |
1047 | unsigned int port_idx) | |
1048 | { | |
1049 | VPRINTK("ENTER, base==0x%lx, port_idx %u\n", base, port_idx); | |
1050 | base = ahci_port_base_ul(base, port_idx); | |
1051 | VPRINTK("base now==0x%lx\n", base); | |
1052 | ||
1053 | port->cmd_addr = base; | |
1054 | port->scr_addr = base + PORT_SCR; | |
1055 | ||
1056 | VPRINTK("EXIT\n"); | |
1057 | } | |
1058 | ||
1059 | static int ahci_host_init(struct ata_probe_ent *probe_ent) | |
1060 | { | |
1061 | struct ahci_host_priv *hpriv = probe_ent->private_data; | |
1062 | struct pci_dev *pdev = to_pci_dev(probe_ent->dev); | |
1063 | void __iomem *mmio = probe_ent->mmio_base; | |
1064 | u32 tmp, cap_save; | |
1da177e4 LT |
1065 | unsigned int i, j, using_dac; |
1066 | int rc; | |
1067 | void __iomem *port_mmio; | |
1068 | ||
1069 | cap_save = readl(mmio + HOST_CAP); | |
1070 | cap_save &= ( (1<<28) | (1<<17) ); | |
1071 | cap_save |= (1 << 27); | |
1072 | ||
1073 | /* global controller reset */ | |
1074 | tmp = readl(mmio + HOST_CTL); | |
1075 | if ((tmp & HOST_RESET) == 0) { | |
1076 | writel(tmp | HOST_RESET, mmio + HOST_CTL); | |
1077 | readl(mmio + HOST_CTL); /* flush */ | |
1078 | } | |
1079 | ||
1080 | /* reset must complete within 1 second, or | |
1081 | * the hardware should be considered fried. | |
1082 | */ | |
1083 | ssleep(1); | |
1084 | ||
1085 | tmp = readl(mmio + HOST_CTL); | |
1086 | if (tmp & HOST_RESET) { | |
a9524a76 JG |
1087 | dev_printk(KERN_ERR, &pdev->dev, |
1088 | "controller reset failed (0x%x)\n", tmp); | |
1da177e4 LT |
1089 | return -EIO; |
1090 | } | |
1091 | ||
1092 | writel(HOST_AHCI_EN, mmio + HOST_CTL); | |
1093 | (void) readl(mmio + HOST_CTL); /* flush */ | |
1094 | writel(cap_save, mmio + HOST_CAP); | |
1095 | writel(0xf, mmio + HOST_PORTS_IMPL); | |
1096 | (void) readl(mmio + HOST_PORTS_IMPL); /* flush */ | |
1097 | ||
bd12097c JG |
1098 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) { |
1099 | u16 tmp16; | |
1100 | ||
1101 | pci_read_config_word(pdev, 0x92, &tmp16); | |
1102 | tmp16 |= 0xf; | |
1103 | pci_write_config_word(pdev, 0x92, tmp16); | |
1104 | } | |
1da177e4 LT |
1105 | |
1106 | hpriv->cap = readl(mmio + HOST_CAP); | |
1107 | hpriv->port_map = readl(mmio + HOST_PORTS_IMPL); | |
1108 | probe_ent->n_ports = (hpriv->cap & 0x1f) + 1; | |
1109 | ||
1110 | VPRINTK("cap 0x%x port_map 0x%x n_ports %d\n", | |
1111 | hpriv->cap, hpriv->port_map, probe_ent->n_ports); | |
1112 | ||
1113 | using_dac = hpriv->cap & HOST_CAP_64; | |
1114 | if (using_dac && | |
1115 | !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) { | |
1116 | rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); | |
1117 | if (rc) { | |
1118 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
1119 | if (rc) { | |
a9524a76 JG |
1120 | dev_printk(KERN_ERR, &pdev->dev, |
1121 | "64-bit DMA enable failed\n"); | |
1da177e4 LT |
1122 | return rc; |
1123 | } | |
1124 | } | |
1da177e4 LT |
1125 | } else { |
1126 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
1127 | if (rc) { | |
a9524a76 JG |
1128 | dev_printk(KERN_ERR, &pdev->dev, |
1129 | "32-bit DMA enable failed\n"); | |
1da177e4 LT |
1130 | return rc; |
1131 | } | |
1132 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
1133 | if (rc) { | |
a9524a76 JG |
1134 | dev_printk(KERN_ERR, &pdev->dev, |
1135 | "32-bit consistent DMA enable failed\n"); | |
1da177e4 LT |
1136 | return rc; |
1137 | } | |
1138 | } | |
1139 | ||
1140 | for (i = 0; i < probe_ent->n_ports; i++) { | |
1141 | #if 0 /* BIOSen initialize this incorrectly */ | |
1142 | if (!(hpriv->port_map & (1 << i))) | |
1143 | continue; | |
1144 | #endif | |
1145 | ||
1146 | port_mmio = ahci_port_base(mmio, i); | |
1147 | VPRINTK("mmio %p port_mmio %p\n", mmio, port_mmio); | |
1148 | ||
1149 | ahci_setup_port(&probe_ent->port[i], | |
1150 | (unsigned long) mmio, i); | |
1151 | ||
1152 | /* make sure port is not active */ | |
1153 | tmp = readl(port_mmio + PORT_CMD); | |
1154 | VPRINTK("PORT_CMD 0x%x\n", tmp); | |
1155 | if (tmp & (PORT_CMD_LIST_ON | PORT_CMD_FIS_ON | | |
1156 | PORT_CMD_FIS_RX | PORT_CMD_START)) { | |
1157 | tmp &= ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON | | |
1158 | PORT_CMD_FIS_RX | PORT_CMD_START); | |
1159 | writel(tmp, port_mmio + PORT_CMD); | |
1160 | readl(port_mmio + PORT_CMD); /* flush */ | |
1161 | ||
1162 | /* spec says 500 msecs for each bit, so | |
1163 | * this is slightly incorrect. | |
1164 | */ | |
1165 | msleep(500); | |
1166 | } | |
1167 | ||
1168 | writel(PORT_CMD_SPIN_UP, port_mmio + PORT_CMD); | |
1169 | ||
1170 | j = 0; | |
1171 | while (j < 100) { | |
1172 | msleep(10); | |
1173 | tmp = readl(port_mmio + PORT_SCR_STAT); | |
1174 | if ((tmp & 0xf) == 0x3) | |
1175 | break; | |
1176 | j++; | |
1177 | } | |
1178 | ||
1179 | tmp = readl(port_mmio + PORT_SCR_ERR); | |
1180 | VPRINTK("PORT_SCR_ERR 0x%x\n", tmp); | |
1181 | writel(tmp, port_mmio + PORT_SCR_ERR); | |
1182 | ||
1183 | /* ack any pending irq events for this port */ | |
1184 | tmp = readl(port_mmio + PORT_IRQ_STAT); | |
1185 | VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp); | |
1186 | if (tmp) | |
1187 | writel(tmp, port_mmio + PORT_IRQ_STAT); | |
1188 | ||
1189 | writel(1 << i, mmio + HOST_IRQ_STAT); | |
1da177e4 LT |
1190 | } |
1191 | ||
1192 | tmp = readl(mmio + HOST_CTL); | |
1193 | VPRINTK("HOST_CTL 0x%x\n", tmp); | |
1194 | writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL); | |
1195 | tmp = readl(mmio + HOST_CTL); | |
1196 | VPRINTK("HOST_CTL 0x%x\n", tmp); | |
1197 | ||
1198 | pci_set_master(pdev); | |
1199 | ||
1200 | return 0; | |
1201 | } | |
1202 | ||
1da177e4 LT |
1203 | static void ahci_print_info(struct ata_probe_ent *probe_ent) |
1204 | { | |
1205 | struct ahci_host_priv *hpriv = probe_ent->private_data; | |
1206 | struct pci_dev *pdev = to_pci_dev(probe_ent->dev); | |
ea6ba10b | 1207 | void __iomem *mmio = probe_ent->mmio_base; |
1da177e4 LT |
1208 | u32 vers, cap, impl, speed; |
1209 | const char *speed_s; | |
1210 | u16 cc; | |
1211 | const char *scc_s; | |
1212 | ||
1213 | vers = readl(mmio + HOST_VERSION); | |
1214 | cap = hpriv->cap; | |
1215 | impl = hpriv->port_map; | |
1216 | ||
1217 | speed = (cap >> 20) & 0xf; | |
1218 | if (speed == 1) | |
1219 | speed_s = "1.5"; | |
1220 | else if (speed == 2) | |
1221 | speed_s = "3"; | |
1222 | else | |
1223 | speed_s = "?"; | |
1224 | ||
1225 | pci_read_config_word(pdev, 0x0a, &cc); | |
1226 | if (cc == 0x0101) | |
1227 | scc_s = "IDE"; | |
1228 | else if (cc == 0x0106) | |
1229 | scc_s = "SATA"; | |
1230 | else if (cc == 0x0104) | |
1231 | scc_s = "RAID"; | |
1232 | else | |
1233 | scc_s = "unknown"; | |
1234 | ||
a9524a76 JG |
1235 | dev_printk(KERN_INFO, &pdev->dev, |
1236 | "AHCI %02x%02x.%02x%02x " | |
1da177e4 LT |
1237 | "%u slots %u ports %s Gbps 0x%x impl %s mode\n" |
1238 | , | |
1da177e4 LT |
1239 | |
1240 | (vers >> 24) & 0xff, | |
1241 | (vers >> 16) & 0xff, | |
1242 | (vers >> 8) & 0xff, | |
1243 | vers & 0xff, | |
1244 | ||
1245 | ((cap >> 8) & 0x1f) + 1, | |
1246 | (cap & 0x1f) + 1, | |
1247 | speed_s, | |
1248 | impl, | |
1249 | scc_s); | |
1250 | ||
a9524a76 JG |
1251 | dev_printk(KERN_INFO, &pdev->dev, |
1252 | "flags: " | |
1da177e4 LT |
1253 | "%s%s%s%s%s%s" |
1254 | "%s%s%s%s%s%s%s\n" | |
1255 | , | |
1da177e4 LT |
1256 | |
1257 | cap & (1 << 31) ? "64bit " : "", | |
1258 | cap & (1 << 30) ? "ncq " : "", | |
1259 | cap & (1 << 28) ? "ilck " : "", | |
1260 | cap & (1 << 27) ? "stag " : "", | |
1261 | cap & (1 << 26) ? "pm " : "", | |
1262 | cap & (1 << 25) ? "led " : "", | |
1263 | ||
1264 | cap & (1 << 24) ? "clo " : "", | |
1265 | cap & (1 << 19) ? "nz " : "", | |
1266 | cap & (1 << 18) ? "only " : "", | |
1267 | cap & (1 << 17) ? "pmp " : "", | |
1268 | cap & (1 << 15) ? "pio " : "", | |
1269 | cap & (1 << 14) ? "slum " : "", | |
1270 | cap & (1 << 13) ? "part " : "" | |
1271 | ); | |
1272 | } | |
1273 | ||
1274 | static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) | |
1275 | { | |
1276 | static int printed_version; | |
1277 | struct ata_probe_ent *probe_ent = NULL; | |
1278 | struct ahci_host_priv *hpriv; | |
1279 | unsigned long base; | |
ea6ba10b | 1280 | void __iomem *mmio_base; |
1da177e4 | 1281 | unsigned int board_idx = (unsigned int) ent->driver_data; |
907f4678 | 1282 | int have_msi, pci_dev_busy = 0; |
1da177e4 LT |
1283 | int rc; |
1284 | ||
1285 | VPRINTK("ENTER\n"); | |
1286 | ||
12fad3f9 TH |
1287 | WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS); |
1288 | ||
1da177e4 | 1289 | if (!printed_version++) |
a9524a76 | 1290 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
1da177e4 LT |
1291 | |
1292 | rc = pci_enable_device(pdev); | |
1293 | if (rc) | |
1294 | return rc; | |
1295 | ||
1296 | rc = pci_request_regions(pdev, DRV_NAME); | |
1297 | if (rc) { | |
1298 | pci_dev_busy = 1; | |
1299 | goto err_out; | |
1300 | } | |
1301 | ||
907f4678 JG |
1302 | if (pci_enable_msi(pdev) == 0) |
1303 | have_msi = 1; | |
1304 | else { | |
1305 | pci_intx(pdev, 1); | |
1306 | have_msi = 0; | |
1307 | } | |
1da177e4 LT |
1308 | |
1309 | probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL); | |
1310 | if (probe_ent == NULL) { | |
1311 | rc = -ENOMEM; | |
907f4678 | 1312 | goto err_out_msi; |
1da177e4 LT |
1313 | } |
1314 | ||
1315 | memset(probe_ent, 0, sizeof(*probe_ent)); | |
1316 | probe_ent->dev = pci_dev_to_dev(pdev); | |
1317 | INIT_LIST_HEAD(&probe_ent->node); | |
1318 | ||
374b1873 | 1319 | mmio_base = pci_iomap(pdev, AHCI_PCI_BAR, 0); |
1da177e4 LT |
1320 | if (mmio_base == NULL) { |
1321 | rc = -ENOMEM; | |
1322 | goto err_out_free_ent; | |
1323 | } | |
1324 | base = (unsigned long) mmio_base; | |
1325 | ||
1326 | hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL); | |
1327 | if (!hpriv) { | |
1328 | rc = -ENOMEM; | |
1329 | goto err_out_iounmap; | |
1330 | } | |
1331 | memset(hpriv, 0, sizeof(*hpriv)); | |
1332 | ||
1333 | probe_ent->sht = ahci_port_info[board_idx].sht; | |
1334 | probe_ent->host_flags = ahci_port_info[board_idx].host_flags; | |
1335 | probe_ent->pio_mask = ahci_port_info[board_idx].pio_mask; | |
1336 | probe_ent->udma_mask = ahci_port_info[board_idx].udma_mask; | |
1337 | probe_ent->port_ops = ahci_port_info[board_idx].port_ops; | |
1338 | ||
1339 | probe_ent->irq = pdev->irq; | |
1340 | probe_ent->irq_flags = SA_SHIRQ; | |
1341 | probe_ent->mmio_base = mmio_base; | |
1342 | probe_ent->private_data = hpriv; | |
1343 | ||
4b0060f4 JG |
1344 | if (have_msi) |
1345 | hpriv->flags |= AHCI_FLAG_MSI; | |
907f4678 | 1346 | |
bd12097c JG |
1347 | /* JMicron-specific fixup: make sure we're in AHCI mode */ |
1348 | if (pdev->vendor == 0x197b) | |
1349 | pci_write_config_byte(pdev, 0x41, 0xa1); | |
1350 | ||
1da177e4 LT |
1351 | /* initialize adapter */ |
1352 | rc = ahci_host_init(probe_ent); | |
1353 | if (rc) | |
1354 | goto err_out_hpriv; | |
1355 | ||
12fad3f9 TH |
1356 | if (hpriv->cap & HOST_CAP_NCQ) |
1357 | probe_ent->host_flags |= ATA_FLAG_NCQ; | |
1358 | ||
1da177e4 LT |
1359 | ahci_print_info(probe_ent); |
1360 | ||
1361 | /* FIXME: check ata_device_add return value */ | |
1362 | ata_device_add(probe_ent); | |
1363 | kfree(probe_ent); | |
1364 | ||
1365 | return 0; | |
1366 | ||
1367 | err_out_hpriv: | |
1368 | kfree(hpriv); | |
1369 | err_out_iounmap: | |
374b1873 | 1370 | pci_iounmap(pdev, mmio_base); |
1da177e4 LT |
1371 | err_out_free_ent: |
1372 | kfree(probe_ent); | |
907f4678 JG |
1373 | err_out_msi: |
1374 | if (have_msi) | |
1375 | pci_disable_msi(pdev); | |
1376 | else | |
1377 | pci_intx(pdev, 0); | |
1da177e4 LT |
1378 | pci_release_regions(pdev); |
1379 | err_out: | |
1380 | if (!pci_dev_busy) | |
1381 | pci_disable_device(pdev); | |
1382 | return rc; | |
1383 | } | |
1384 | ||
907f4678 JG |
1385 | static void ahci_remove_one (struct pci_dev *pdev) |
1386 | { | |
1387 | struct device *dev = pci_dev_to_dev(pdev); | |
1388 | struct ata_host_set *host_set = dev_get_drvdata(dev); | |
1389 | struct ahci_host_priv *hpriv = host_set->private_data; | |
1390 | struct ata_port *ap; | |
1391 | unsigned int i; | |
1392 | int have_msi; | |
1393 | ||
1394 | for (i = 0; i < host_set->n_ports; i++) { | |
1395 | ap = host_set->ports[i]; | |
1396 | ||
1397 | scsi_remove_host(ap->host); | |
1398 | } | |
1399 | ||
4b0060f4 | 1400 | have_msi = hpriv->flags & AHCI_FLAG_MSI; |
907f4678 | 1401 | free_irq(host_set->irq, host_set); |
907f4678 JG |
1402 | |
1403 | for (i = 0; i < host_set->n_ports; i++) { | |
1404 | ap = host_set->ports[i]; | |
1405 | ||
1406 | ata_scsi_release(ap->host); | |
1407 | scsi_host_put(ap->host); | |
1408 | } | |
1409 | ||
e005f01d | 1410 | kfree(hpriv); |
374b1873 | 1411 | pci_iounmap(pdev, host_set->mmio_base); |
ead5de99 JG |
1412 | kfree(host_set); |
1413 | ||
907f4678 JG |
1414 | if (have_msi) |
1415 | pci_disable_msi(pdev); | |
1416 | else | |
1417 | pci_intx(pdev, 0); | |
1418 | pci_release_regions(pdev); | |
907f4678 JG |
1419 | pci_disable_device(pdev); |
1420 | dev_set_drvdata(dev, NULL); | |
1421 | } | |
1da177e4 LT |
1422 | |
1423 | static int __init ahci_init(void) | |
1424 | { | |
1425 | return pci_module_init(&ahci_pci_driver); | |
1426 | } | |
1427 | ||
1da177e4 LT |
1428 | static void __exit ahci_exit(void) |
1429 | { | |
1430 | pci_unregister_driver(&ahci_pci_driver); | |
1431 | } | |
1432 | ||
1433 | ||
1434 | MODULE_AUTHOR("Jeff Garzik"); | |
1435 | MODULE_DESCRIPTION("AHCI SATA low-level driver"); | |
1436 | MODULE_LICENSE("GPL"); | |
1437 | MODULE_DEVICE_TABLE(pci, ahci_pci_tbl); | |
6885433c | 1438 | MODULE_VERSION(DRV_VERSION); |
1da177e4 LT |
1439 | |
1440 | module_init(ahci_init); | |
1441 | module_exit(ahci_exit); |