2 * ahci.c - AHCI SATA support
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
8 * Copyright 2004-2005 Red Hat, Inc.
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)
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.
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.
26 * libata documentation is available via 'make {ps|pdf}docs',
27 * as Documentation/DocBook/libata.*
29 * AHCI hardware documentation:
30 * http://www.intel.com/technology/serialata/pdf/rev1_0.pdf
31 * http://www.intel.com/technology/serialata/pdf/rev1_1.pdf
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/dma-mapping.h>
43 #include <linux/device.h>
44 #include <scsi/scsi_host.h>
45 #include <scsi/scsi_cmnd.h>
46 #include <linux/libata.h>
48 #define DRV_NAME "ahci"
49 #define DRV_VERSION "2.3"
55 AHCI_MAX_SG = 168, /* hardware max is 64K */
56 AHCI_DMA_BOUNDARY = 0xffffffff,
57 AHCI_USE_CLUSTERING = 1,
60 AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
62 AHCI_CMD_TBL_CDB = 0x40,
63 AHCI_CMD_TBL_HDR_SZ = 0x80,
64 AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
65 AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
66 AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
68 AHCI_IRQ_ON_SG = (1 << 31),
69 AHCI_CMD_ATAPI = (1 << 5),
70 AHCI_CMD_WRITE = (1 << 6),
71 AHCI_CMD_PREFETCH = (1 << 7),
72 AHCI_CMD_RESET = (1 << 8),
73 AHCI_CMD_CLR_BUSY = (1 << 10),
75 RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
76 RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
77 RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
81 board_ahci_vt8251 = 2,
82 board_ahci_ign_iferr = 3,
86 /* global controller registers */
87 HOST_CAP = 0x00, /* host capabilities */
88 HOST_CTL = 0x04, /* global host control */
89 HOST_IRQ_STAT = 0x08, /* interrupt status */
90 HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
91 HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
94 HOST_RESET = (1 << 0), /* reset controller; self-clear */
95 HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
96 HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
99 HOST_CAP_SSC = (1 << 14), /* Slumber capable */
100 HOST_CAP_CLO = (1 << 24), /* Command List Override support */
101 HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
102 HOST_CAP_SNTF = (1 << 29), /* SNotification register */
103 HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */
104 HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */
106 /* registers for each SATA port */
107 PORT_LST_ADDR = 0x00, /* command list DMA addr */
108 PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
109 PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
110 PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
111 PORT_IRQ_STAT = 0x10, /* interrupt status */
112 PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
113 PORT_CMD = 0x18, /* port command */
114 PORT_TFDATA = 0x20, /* taskfile data */
115 PORT_SIG = 0x24, /* device TF signature */
116 PORT_CMD_ISSUE = 0x38, /* command issue */
117 PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
118 PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
119 PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
120 PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
121 PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
123 /* PORT_IRQ_{STAT,MASK} bits */
124 PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */
125 PORT_IRQ_TF_ERR = (1 << 30), /* task file error */
126 PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */
127 PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */
128 PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */
129 PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */
130 PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */
131 PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
133 PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
134 PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
135 PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
136 PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
137 PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
138 PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */
139 PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */
140 PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */
141 PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */
143 PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
148 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
150 PORT_IRQ_HBUS_DATA_ERR,
151 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
152 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
153 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
156 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
157 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
158 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
159 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
160 PORT_CMD_CLO = (1 << 3), /* Command list override */
161 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
162 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
163 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
165 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
166 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
167 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
168 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
171 AHCI_FLAG_NO_NCQ = (1 << 24),
172 AHCI_FLAG_IGN_IRQ_IF_ERR = (1 << 25), /* ignore IRQ_IF_ERR */
173 AHCI_FLAG_HONOR_PI = (1 << 26), /* honor PORTS_IMPL */
174 AHCI_FLAG_IGN_SERR_INTERNAL = (1 << 27), /* ignore SERR_INTERNAL */
175 AHCI_FLAG_32BIT_ONLY = (1 << 28), /* force 32bit */
176 AHCI_FLAG_MV_PATA = (1 << 29), /* PATA port */
177 AHCI_FLAG_NO_MSI = (1 << 30), /* no PCI MSI */
179 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
180 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
182 AHCI_LFLAG_COMMON = ATA_LFLAG_SKIP_D2H_BSY,
185 struct ahci_cmd_hdr {
200 struct ahci_host_priv {
201 u32 cap; /* cap to use */
202 u32 port_map; /* port map to use */
203 u32 saved_cap; /* saved initial cap */
204 u32 saved_port_map; /* saved initial port_map */
207 struct ahci_port_priv {
208 struct ahci_cmd_hdr *cmd_slot;
209 dma_addr_t cmd_slot_dma;
211 dma_addr_t cmd_tbl_dma;
213 dma_addr_t rx_fis_dma;
214 /* for NCQ spurious interrupt analysis */
215 unsigned int ncq_saw_d2h:1;
216 unsigned int ncq_saw_dmas:1;
217 unsigned int ncq_saw_sdb:1;
220 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
221 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
222 static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
223 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
224 static void ahci_irq_clear(struct ata_port *ap);
225 static int ahci_port_start(struct ata_port *ap);
226 static void ahci_port_stop(struct ata_port *ap);
227 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
228 static void ahci_qc_prep(struct ata_queued_cmd *qc);
229 static u8 ahci_check_status(struct ata_port *ap);
230 static void ahci_freeze(struct ata_port *ap);
231 static void ahci_thaw(struct ata_port *ap);
232 static void ahci_error_handler(struct ata_port *ap);
233 static void ahci_vt8251_error_handler(struct ata_port *ap);
234 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
235 static int ahci_port_resume(struct ata_port *ap);
236 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl);
237 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
240 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg);
241 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
242 static int ahci_pci_device_resume(struct pci_dev *pdev);
245 static struct scsi_host_template ahci_sht = {
246 .module = THIS_MODULE,
248 .ioctl = ata_scsi_ioctl,
249 .queuecommand = ata_scsi_queuecmd,
250 .change_queue_depth = ata_scsi_change_queue_depth,
251 .can_queue = AHCI_MAX_CMDS - 1,
252 .this_id = ATA_SHT_THIS_ID,
253 .sg_tablesize = AHCI_MAX_SG,
254 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
255 .emulated = ATA_SHT_EMULATED,
256 .use_clustering = AHCI_USE_CLUSTERING,
257 .proc_name = DRV_NAME,
258 .dma_boundary = AHCI_DMA_BOUNDARY,
259 .slave_configure = ata_scsi_slave_config,
260 .slave_destroy = ata_scsi_slave_destroy,
261 .bios_param = ata_std_bios_param,
264 static const struct ata_port_operations ahci_ops = {
265 .port_disable = ata_port_disable,
267 .check_status = ahci_check_status,
268 .check_altstatus = ahci_check_status,
269 .dev_select = ata_noop_dev_select,
271 .tf_read = ahci_tf_read,
273 .qc_prep = ahci_qc_prep,
274 .qc_issue = ahci_qc_issue,
276 .irq_clear = ahci_irq_clear,
277 .irq_on = ata_dummy_irq_on,
278 .irq_ack = ata_dummy_irq_ack,
280 .scr_read = ahci_scr_read,
281 .scr_write = ahci_scr_write,
283 .freeze = ahci_freeze,
286 .error_handler = ahci_error_handler,
287 .post_internal_cmd = ahci_post_internal_cmd,
290 .port_suspend = ahci_port_suspend,
291 .port_resume = ahci_port_resume,
294 .port_start = ahci_port_start,
295 .port_stop = ahci_port_stop,
298 static const struct ata_port_operations ahci_vt8251_ops = {
299 .port_disable = ata_port_disable,
301 .check_status = ahci_check_status,
302 .check_altstatus = ahci_check_status,
303 .dev_select = ata_noop_dev_select,
305 .tf_read = ahci_tf_read,
307 .qc_prep = ahci_qc_prep,
308 .qc_issue = ahci_qc_issue,
310 .irq_clear = ahci_irq_clear,
311 .irq_on = ata_dummy_irq_on,
312 .irq_ack = ata_dummy_irq_ack,
314 .scr_read = ahci_scr_read,
315 .scr_write = ahci_scr_write,
317 .freeze = ahci_freeze,
320 .error_handler = ahci_vt8251_error_handler,
321 .post_internal_cmd = ahci_post_internal_cmd,
324 .port_suspend = ahci_port_suspend,
325 .port_resume = ahci_port_resume,
328 .port_start = ahci_port_start,
329 .port_stop = ahci_port_stop,
332 static const struct ata_port_info ahci_port_info[] = {
335 .flags = AHCI_FLAG_COMMON,
336 .link_flags = AHCI_LFLAG_COMMON,
337 .pio_mask = 0x1f, /* pio0-4 */
338 .udma_mask = ATA_UDMA6,
339 .port_ops = &ahci_ops,
343 .flags = AHCI_FLAG_COMMON | AHCI_FLAG_HONOR_PI,
344 .link_flags = AHCI_LFLAG_COMMON,
345 .pio_mask = 0x1f, /* pio0-4 */
346 .udma_mask = ATA_UDMA6,
347 .port_ops = &ahci_ops,
349 /* board_ahci_vt8251 */
351 .flags = AHCI_FLAG_COMMON | AHCI_FLAG_NO_NCQ,
352 .link_flags = AHCI_LFLAG_COMMON | ATA_LFLAG_HRST_TO_RESUME,
353 .pio_mask = 0x1f, /* pio0-4 */
354 .udma_mask = ATA_UDMA6,
355 .port_ops = &ahci_vt8251_ops,
357 /* board_ahci_ign_iferr */
359 .flags = AHCI_FLAG_COMMON | AHCI_FLAG_IGN_IRQ_IF_ERR,
360 .link_flags = AHCI_LFLAG_COMMON,
361 .pio_mask = 0x1f, /* pio0-4 */
362 .udma_mask = ATA_UDMA6,
363 .port_ops = &ahci_ops,
365 /* board_ahci_sb600 */
367 .flags = AHCI_FLAG_COMMON |
368 AHCI_FLAG_IGN_SERR_INTERNAL |
369 AHCI_FLAG_32BIT_ONLY,
370 .link_flags = AHCI_LFLAG_COMMON,
371 .pio_mask = 0x1f, /* pio0-4 */
372 .udma_mask = ATA_UDMA6,
373 .port_ops = &ahci_ops,
378 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
379 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
380 AHCI_FLAG_HONOR_PI | AHCI_FLAG_NO_NCQ |
381 AHCI_FLAG_NO_MSI | AHCI_FLAG_MV_PATA,
382 .link_flags = AHCI_LFLAG_COMMON,
383 .pio_mask = 0x1f, /* pio0-4 */
384 .udma_mask = ATA_UDMA6,
385 .port_ops = &ahci_ops,
389 static const struct pci_device_id ahci_pci_tbl[] = {
391 { PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
392 { PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
393 { PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
394 { PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
395 { PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
396 { PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
397 { PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
398 { PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
399 { PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
400 { PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
401 { PCI_VDEVICE(INTEL, 0x2821), board_ahci_pi }, /* ICH8 */
402 { PCI_VDEVICE(INTEL, 0x2822), board_ahci_pi }, /* ICH8 */
403 { PCI_VDEVICE(INTEL, 0x2824), board_ahci_pi }, /* ICH8 */
404 { PCI_VDEVICE(INTEL, 0x2829), board_ahci_pi }, /* ICH8M */
405 { PCI_VDEVICE(INTEL, 0x282a), board_ahci_pi }, /* ICH8M */
406 { PCI_VDEVICE(INTEL, 0x2922), board_ahci_pi }, /* ICH9 */
407 { PCI_VDEVICE(INTEL, 0x2923), board_ahci_pi }, /* ICH9 */
408 { PCI_VDEVICE(INTEL, 0x2924), board_ahci_pi }, /* ICH9 */
409 { PCI_VDEVICE(INTEL, 0x2925), board_ahci_pi }, /* ICH9 */
410 { PCI_VDEVICE(INTEL, 0x2927), board_ahci_pi }, /* ICH9 */
411 { PCI_VDEVICE(INTEL, 0x2929), board_ahci_pi }, /* ICH9M */
412 { PCI_VDEVICE(INTEL, 0x292a), board_ahci_pi }, /* ICH9M */
413 { PCI_VDEVICE(INTEL, 0x292b), board_ahci_pi }, /* ICH9M */
414 { PCI_VDEVICE(INTEL, 0x292c), board_ahci_pi }, /* ICH9M */
415 { PCI_VDEVICE(INTEL, 0x292f), board_ahci_pi }, /* ICH9M */
416 { PCI_VDEVICE(INTEL, 0x294d), board_ahci_pi }, /* ICH9 */
417 { PCI_VDEVICE(INTEL, 0x294e), board_ahci_pi }, /* ICH9M */
419 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
420 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
421 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
424 { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
425 { PCI_VDEVICE(ATI, 0x4390), board_ahci_sb600 }, /* ATI SB700/800 */
426 { PCI_VDEVICE(ATI, 0x4391), board_ahci_sb600 }, /* ATI SB700/800 */
427 { PCI_VDEVICE(ATI, 0x4392), board_ahci_sb600 }, /* ATI SB700/800 */
428 { PCI_VDEVICE(ATI, 0x4393), board_ahci_sb600 }, /* ATI SB700/800 */
429 { PCI_VDEVICE(ATI, 0x4394), board_ahci_sb600 }, /* ATI SB700/800 */
430 { PCI_VDEVICE(ATI, 0x4395), board_ahci_sb600 }, /* ATI SB700/800 */
433 { PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
434 { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
437 { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci }, /* MCP65 */
438 { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci }, /* MCP65 */
439 { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci }, /* MCP65 */
440 { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci }, /* MCP65 */
441 { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci }, /* MCP65 */
442 { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci }, /* MCP65 */
443 { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci }, /* MCP65 */
444 { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci }, /* MCP65 */
445 { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci }, /* MCP67 */
446 { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci }, /* MCP67 */
447 { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci }, /* MCP67 */
448 { PCI_VDEVICE(NVIDIA, 0x0553), board_ahci }, /* MCP67 */
449 { PCI_VDEVICE(NVIDIA, 0x0554), board_ahci }, /* MCP67 */
450 { PCI_VDEVICE(NVIDIA, 0x0555), board_ahci }, /* MCP67 */
451 { PCI_VDEVICE(NVIDIA, 0x0556), board_ahci }, /* MCP67 */
452 { PCI_VDEVICE(NVIDIA, 0x0557), board_ahci }, /* MCP67 */
453 { PCI_VDEVICE(NVIDIA, 0x0558), board_ahci }, /* MCP67 */
454 { PCI_VDEVICE(NVIDIA, 0x0559), board_ahci }, /* MCP67 */
455 { PCI_VDEVICE(NVIDIA, 0x055a), board_ahci }, /* MCP67 */
456 { PCI_VDEVICE(NVIDIA, 0x055b), board_ahci }, /* MCP67 */
457 { PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci }, /* MCP73 */
458 { PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci }, /* MCP73 */
459 { PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci }, /* MCP73 */
460 { PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci }, /* MCP73 */
461 { PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci }, /* MCP73 */
462 { PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci }, /* MCP73 */
463 { PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci }, /* MCP73 */
464 { PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci }, /* MCP73 */
465 { PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci }, /* MCP73 */
466 { PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci }, /* MCP73 */
467 { PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci }, /* MCP73 */
468 { PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci }, /* MCP73 */
469 { PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci }, /* MCP77 */
470 { PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci }, /* MCP77 */
471 { PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci }, /* MCP77 */
472 { PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci }, /* MCP77 */
473 { PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci }, /* MCP77 */
474 { PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci }, /* MCP77 */
475 { PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci }, /* MCP77 */
476 { PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci }, /* MCP77 */
477 { PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci }, /* MCP77 */
478 { PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci }, /* MCP77 */
479 { PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci }, /* MCP77 */
480 { PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci }, /* MCP77 */
483 { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
484 { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 966 */
485 { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
488 { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
490 /* Generic, PCI class code for AHCI */
491 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
492 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
494 { } /* terminate list */
498 static struct pci_driver ahci_pci_driver = {
500 .id_table = ahci_pci_tbl,
501 .probe = ahci_init_one,
502 .remove = ata_pci_remove_one,
504 .suspend = ahci_pci_device_suspend,
505 .resume = ahci_pci_device_resume,
510 static inline int ahci_nr_ports(u32 cap)
512 return (cap & 0x1f) + 1;
515 static inline void __iomem *__ahci_port_base(struct ata_host *host,
516 unsigned int port_no)
518 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
520 return mmio + 0x100 + (port_no * 0x80);
523 static inline void __iomem *ahci_port_base(struct ata_port *ap)
525 return __ahci_port_base(ap->host, ap->port_no);
529 * ahci_save_initial_config - Save and fixup initial config values
530 * @pdev: target PCI device
531 * @pi: associated ATA port info
532 * @hpriv: host private area to store config values
534 * Some registers containing configuration info might be setup by
535 * BIOS and might be cleared on reset. This function saves the
536 * initial values of those registers into @hpriv such that they
537 * can be restored after controller reset.
539 * If inconsistent, config values are fixed up by this function.
544 static void ahci_save_initial_config(struct pci_dev *pdev,
545 const struct ata_port_info *pi,
546 struct ahci_host_priv *hpriv)
548 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
552 /* Values prefixed with saved_ are written back to host after
553 * reset. Values without are used for driver operation.
555 hpriv->saved_cap = cap = readl(mmio + HOST_CAP);
556 hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
558 /* some chips have errata preventing 64bit use */
559 if ((cap & HOST_CAP_64) && (pi->flags & AHCI_FLAG_32BIT_ONLY)) {
560 dev_printk(KERN_INFO, &pdev->dev,
561 "controller can't do 64bit DMA, forcing 32bit\n");
565 if ((cap & HOST_CAP_NCQ) && (pi->flags & AHCI_FLAG_NO_NCQ)) {
566 dev_printk(KERN_INFO, &pdev->dev,
567 "controller can't do NCQ, turning off CAP_NCQ\n");
568 cap &= ~HOST_CAP_NCQ;
571 /* fixup zero port_map */
573 port_map = (1 << ahci_nr_ports(cap)) - 1;
574 dev_printk(KERN_WARNING, &pdev->dev,
575 "PORTS_IMPL is zero, forcing 0x%x\n", port_map);
577 /* write the fixed up value to the PI register */
578 hpriv->saved_port_map = port_map;
582 * Temporary Marvell 6145 hack: PATA port presence
583 * is asserted through the standard AHCI port
584 * presence register, as bit 4 (counting from 0)
586 if (pi->flags & AHCI_FLAG_MV_PATA) {
587 dev_printk(KERN_ERR, &pdev->dev,
588 "MV_AHCI HACK: port_map %x -> %x\n",
590 hpriv->port_map & 0xf);
595 /* cross check port_map and cap.n_ports */
596 if (pi->flags & AHCI_FLAG_HONOR_PI) {
597 u32 tmp_port_map = port_map;
598 int n_ports = ahci_nr_ports(cap);
600 for (i = 0; i < AHCI_MAX_PORTS && n_ports; i++) {
601 if (tmp_port_map & (1 << i)) {
603 tmp_port_map &= ~(1 << i);
607 /* Whine if inconsistent. No need to update cap.
608 * port_map is used to determine number of ports.
610 if (n_ports || tmp_port_map)
611 dev_printk(KERN_WARNING, &pdev->dev,
612 "nr_ports (%u) and implemented port map "
613 "(0x%x) don't match\n",
614 ahci_nr_ports(cap), port_map);
616 /* fabricate port_map from cap.nr_ports */
617 port_map = (1 << ahci_nr_ports(cap)) - 1;
620 /* record values to use during operation */
622 hpriv->port_map = port_map;
626 * ahci_restore_initial_config - Restore initial config
627 * @host: target ATA host
629 * Restore initial config stored by ahci_save_initial_config().
634 static void ahci_restore_initial_config(struct ata_host *host)
636 struct ahci_host_priv *hpriv = host->private_data;
637 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
639 writel(hpriv->saved_cap, mmio + HOST_CAP);
640 writel(hpriv->saved_port_map, mmio + HOST_PORTS_IMPL);
641 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
644 static unsigned ahci_scr_offset(struct ata_port *ap, unsigned int sc_reg)
646 static const int offset[] = {
647 [SCR_STATUS] = PORT_SCR_STAT,
648 [SCR_CONTROL] = PORT_SCR_CTL,
649 [SCR_ERROR] = PORT_SCR_ERR,
650 [SCR_ACTIVE] = PORT_SCR_ACT,
651 [SCR_NOTIFICATION] = PORT_SCR_NTF,
653 struct ahci_host_priv *hpriv = ap->host->private_data;
655 if (sc_reg < ARRAY_SIZE(offset) &&
656 (sc_reg != SCR_NOTIFICATION || (hpriv->cap & HOST_CAP_SNTF)))
657 return offset[sc_reg];
661 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
663 void __iomem *port_mmio = ahci_port_base(ap);
664 int offset = ahci_scr_offset(ap, sc_reg);
667 *val = readl(port_mmio + offset);
673 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
675 void __iomem *port_mmio = ahci_port_base(ap);
676 int offset = ahci_scr_offset(ap, sc_reg);
679 writel(val, port_mmio + offset);
685 static void ahci_start_engine(struct ata_port *ap)
687 void __iomem *port_mmio = ahci_port_base(ap);
691 tmp = readl(port_mmio + PORT_CMD);
692 tmp |= PORT_CMD_START;
693 writel(tmp, port_mmio + PORT_CMD);
694 readl(port_mmio + PORT_CMD); /* flush */
697 static int ahci_stop_engine(struct ata_port *ap)
699 void __iomem *port_mmio = ahci_port_base(ap);
702 tmp = readl(port_mmio + PORT_CMD);
704 /* check if the HBA is idle */
705 if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
708 /* setting HBA to idle */
709 tmp &= ~PORT_CMD_START;
710 writel(tmp, port_mmio + PORT_CMD);
712 /* wait for engine to stop. This could be as long as 500 msec */
713 tmp = ata_wait_register(port_mmio + PORT_CMD,
714 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
715 if (tmp & PORT_CMD_LIST_ON)
721 static void ahci_start_fis_rx(struct ata_port *ap)
723 void __iomem *port_mmio = ahci_port_base(ap);
724 struct ahci_host_priv *hpriv = ap->host->private_data;
725 struct ahci_port_priv *pp = ap->private_data;
728 /* set FIS registers */
729 if (hpriv->cap & HOST_CAP_64)
730 writel((pp->cmd_slot_dma >> 16) >> 16,
731 port_mmio + PORT_LST_ADDR_HI);
732 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
734 if (hpriv->cap & HOST_CAP_64)
735 writel((pp->rx_fis_dma >> 16) >> 16,
736 port_mmio + PORT_FIS_ADDR_HI);
737 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
739 /* enable FIS reception */
740 tmp = readl(port_mmio + PORT_CMD);
741 tmp |= PORT_CMD_FIS_RX;
742 writel(tmp, port_mmio + PORT_CMD);
745 readl(port_mmio + PORT_CMD);
748 static int ahci_stop_fis_rx(struct ata_port *ap)
750 void __iomem *port_mmio = ahci_port_base(ap);
753 /* disable FIS reception */
754 tmp = readl(port_mmio + PORT_CMD);
755 tmp &= ~PORT_CMD_FIS_RX;
756 writel(tmp, port_mmio + PORT_CMD);
758 /* wait for completion, spec says 500ms, give it 1000 */
759 tmp = ata_wait_register(port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
760 PORT_CMD_FIS_ON, 10, 1000);
761 if (tmp & PORT_CMD_FIS_ON)
767 static void ahci_power_up(struct ata_port *ap)
769 struct ahci_host_priv *hpriv = ap->host->private_data;
770 void __iomem *port_mmio = ahci_port_base(ap);
773 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
776 if (hpriv->cap & HOST_CAP_SSS) {
777 cmd |= PORT_CMD_SPIN_UP;
778 writel(cmd, port_mmio + PORT_CMD);
782 writel(cmd | PORT_CMD_ICC_ACTIVE, port_mmio + PORT_CMD);
786 static void ahci_power_down(struct ata_port *ap)
788 struct ahci_host_priv *hpriv = ap->host->private_data;
789 void __iomem *port_mmio = ahci_port_base(ap);
792 if (!(hpriv->cap & HOST_CAP_SSS))
795 /* put device into listen mode, first set PxSCTL.DET to 0 */
796 scontrol = readl(port_mmio + PORT_SCR_CTL);
798 writel(scontrol, port_mmio + PORT_SCR_CTL);
800 /* then set PxCMD.SUD to 0 */
801 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
802 cmd &= ~PORT_CMD_SPIN_UP;
803 writel(cmd, port_mmio + PORT_CMD);
807 static void ahci_start_port(struct ata_port *ap)
809 /* enable FIS reception */
810 ahci_start_fis_rx(ap);
813 ahci_start_engine(ap);
816 static int ahci_deinit_port(struct ata_port *ap, const char **emsg)
821 rc = ahci_stop_engine(ap);
823 *emsg = "failed to stop engine";
827 /* disable FIS reception */
828 rc = ahci_stop_fis_rx(ap);
830 *emsg = "failed stop FIS RX";
837 static int ahci_reset_controller(struct ata_host *host)
839 struct pci_dev *pdev = to_pci_dev(host->dev);
840 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
843 /* global controller reset */
844 tmp = readl(mmio + HOST_CTL);
845 if ((tmp & HOST_RESET) == 0) {
846 writel(tmp | HOST_RESET, mmio + HOST_CTL);
847 readl(mmio + HOST_CTL); /* flush */
850 /* reset must complete within 1 second, or
851 * the hardware should be considered fried.
855 tmp = readl(mmio + HOST_CTL);
856 if (tmp & HOST_RESET) {
857 dev_printk(KERN_ERR, host->dev,
858 "controller reset failed (0x%x)\n", tmp);
862 /* turn on AHCI mode */
863 writel(HOST_AHCI_EN, mmio + HOST_CTL);
864 (void) readl(mmio + HOST_CTL); /* flush */
866 /* some registers might be cleared on reset. restore initial values */
867 ahci_restore_initial_config(host);
869 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
873 pci_read_config_word(pdev, 0x92, &tmp16);
875 pci_write_config_word(pdev, 0x92, tmp16);
881 static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap,
882 int port_no, void __iomem *mmio,
883 void __iomem *port_mmio)
885 const char *emsg = NULL;
889 /* make sure port is not active */
890 rc = ahci_deinit_port(ap, &emsg);
892 dev_printk(KERN_WARNING, &pdev->dev,
893 "%s (%d)\n", emsg, rc);
896 tmp = readl(port_mmio + PORT_SCR_ERR);
897 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
898 writel(tmp, port_mmio + PORT_SCR_ERR);
901 tmp = readl(port_mmio + PORT_IRQ_STAT);
902 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
904 writel(tmp, port_mmio + PORT_IRQ_STAT);
906 writel(1 << port_no, mmio + HOST_IRQ_STAT);
909 static void ahci_init_controller(struct ata_host *host)
911 struct pci_dev *pdev = to_pci_dev(host->dev);
912 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
914 void __iomem *port_mmio;
917 if (host->ports[0]->flags & AHCI_FLAG_MV_PATA) {
918 port_mmio = __ahci_port_base(host, 4);
920 writel(0, port_mmio + PORT_IRQ_MASK);
923 tmp = readl(port_mmio + PORT_IRQ_STAT);
924 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
926 writel(tmp, port_mmio + PORT_IRQ_STAT);
929 for (i = 0; i < host->n_ports; i++) {
930 struct ata_port *ap = host->ports[i];
932 port_mmio = ahci_port_base(ap);
933 if (ata_port_is_dummy(ap))
936 ahci_port_init(pdev, ap, i, mmio, port_mmio);
939 tmp = readl(mmio + HOST_CTL);
940 VPRINTK("HOST_CTL 0x%x\n", tmp);
941 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
942 tmp = readl(mmio + HOST_CTL);
943 VPRINTK("HOST_CTL 0x%x\n", tmp);
946 static unsigned int ahci_dev_classify(struct ata_port *ap)
948 void __iomem *port_mmio = ahci_port_base(ap);
949 struct ata_taskfile tf;
952 tmp = readl(port_mmio + PORT_SIG);
953 tf.lbah = (tmp >> 24) & 0xff;
954 tf.lbam = (tmp >> 16) & 0xff;
955 tf.lbal = (tmp >> 8) & 0xff;
956 tf.nsect = (tmp) & 0xff;
958 return ata_dev_classify(&tf);
961 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
964 dma_addr_t cmd_tbl_dma;
966 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
968 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
969 pp->cmd_slot[tag].status = 0;
970 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
971 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
974 static int ahci_kick_engine(struct ata_port *ap, int force_restart)
976 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
977 struct ahci_host_priv *hpriv = ap->host->private_data;
981 /* do we need to kick the port? */
982 busy = ahci_check_status(ap) & (ATA_BUSY | ATA_DRQ);
983 if (!busy && !force_restart)
987 rc = ahci_stop_engine(ap);
991 /* need to do CLO? */
997 if (!(hpriv->cap & HOST_CAP_CLO)) {
1003 tmp = readl(port_mmio + PORT_CMD);
1004 tmp |= PORT_CMD_CLO;
1005 writel(tmp, port_mmio + PORT_CMD);
1008 tmp = ata_wait_register(port_mmio + PORT_CMD,
1009 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
1010 if (tmp & PORT_CMD_CLO)
1013 /* restart engine */
1015 ahci_start_engine(ap);
1019 static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
1020 struct ata_taskfile *tf, int is_cmd, u16 flags,
1021 unsigned long timeout_msec)
1023 const u32 cmd_fis_len = 5; /* five dwords */
1024 struct ahci_port_priv *pp = ap->private_data;
1025 void __iomem *port_mmio = ahci_port_base(ap);
1026 u8 *fis = pp->cmd_tbl;
1029 /* prep the command */
1030 ata_tf_to_fis(tf, pmp, is_cmd, fis);
1031 ahci_fill_cmd_slot(pp, 0, cmd_fis_len | flags | (pmp << 12));
1034 writel(1, port_mmio + PORT_CMD_ISSUE);
1037 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1,
1040 ahci_kick_engine(ap, 1);
1044 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1049 static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
1050 int pmp, unsigned long deadline)
1052 struct ata_port *ap = link->ap;
1053 const char *reason = NULL;
1054 unsigned long now, msecs;
1055 struct ata_taskfile tf;
1060 if (ata_link_offline(link)) {
1061 DPRINTK("PHY reports no device\n");
1062 *class = ATA_DEV_NONE;
1066 /* prepare for SRST (AHCI-1.1 10.4.1) */
1067 rc = ahci_kick_engine(ap, 1);
1069 ata_link_printk(link, KERN_WARNING,
1070 "failed to reset engine (errno=%d)", rc);
1072 ata_tf_init(link->device, &tf);
1074 /* issue the first D2H Register FIS */
1077 if (time_after(now, deadline))
1078 msecs = jiffies_to_msecs(deadline - now);
1081 if (ahci_exec_polled_cmd(ap, pmp, &tf, 0,
1082 AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY, msecs)) {
1084 reason = "1st FIS failed";
1088 /* spec says at least 5us, but be generous and sleep for 1ms */
1091 /* issue the second D2H Register FIS */
1092 tf.ctl &= ~ATA_SRST;
1093 ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
1095 /* spec mandates ">= 2ms" before checking status.
1096 * We wait 150ms, because that was the magic delay used for
1097 * ATAPI devices in Hale Landis's ATADRVR, for the period of time
1098 * between when the ATA command register is written, and then
1099 * status is checked. Because waiting for "a while" before
1100 * checking status is fine, post SRST, we perform this magic
1101 * delay here as well.
1105 rc = ata_wait_ready(ap, deadline);
1106 /* link occupied, -ENODEV too is an error */
1108 reason = "device not ready";
1111 *class = ahci_dev_classify(ap);
1113 DPRINTK("EXIT, class=%u\n", *class);
1117 ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
1121 static int ahci_softreset(struct ata_link *link, unsigned int *class,
1122 unsigned long deadline)
1124 return ahci_do_softreset(link, class, 0, deadline);
1127 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
1128 unsigned long deadline)
1130 struct ata_port *ap = link->ap;
1131 struct ahci_port_priv *pp = ap->private_data;
1132 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1133 struct ata_taskfile tf;
1138 ahci_stop_engine(ap);
1140 /* clear D2H reception area to properly wait for D2H FIS */
1141 ata_tf_init(link->device, &tf);
1143 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1145 rc = sata_std_hardreset(link, class, deadline);
1147 ahci_start_engine(ap);
1149 if (rc == 0 && ata_link_online(link))
1150 *class = ahci_dev_classify(ap);
1151 if (*class == ATA_DEV_UNKNOWN)
1152 *class = ATA_DEV_NONE;
1154 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1158 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
1159 unsigned long deadline)
1161 struct ata_port *ap = link->ap;
1167 ahci_stop_engine(ap);
1169 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1172 /* vt8251 needs SError cleared for the port to operate */
1173 ahci_scr_read(ap, SCR_ERROR, &serror);
1174 ahci_scr_write(ap, SCR_ERROR, serror);
1176 ahci_start_engine(ap);
1178 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1180 /* vt8251 doesn't clear BSY on signature FIS reception,
1181 * request follow-up softreset.
1183 return rc ?: -EAGAIN;
1186 static void ahci_postreset(struct ata_link *link, unsigned int *class)
1188 struct ata_port *ap = link->ap;
1189 void __iomem *port_mmio = ahci_port_base(ap);
1192 ata_std_postreset(link, class);
1194 /* Make sure port's ATAPI bit is set appropriately */
1195 new_tmp = tmp = readl(port_mmio + PORT_CMD);
1196 if (*class == ATA_DEV_ATAPI)
1197 new_tmp |= PORT_CMD_ATAPI;
1199 new_tmp &= ~PORT_CMD_ATAPI;
1200 if (new_tmp != tmp) {
1201 writel(new_tmp, port_mmio + PORT_CMD);
1202 readl(port_mmio + PORT_CMD); /* flush */
1206 static u8 ahci_check_status(struct ata_port *ap)
1208 void __iomem *mmio = ap->ioaddr.cmd_addr;
1210 return readl(mmio + PORT_TFDATA) & 0xFF;
1213 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
1215 struct ahci_port_priv *pp = ap->private_data;
1216 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1218 ata_tf_from_fis(d2h_fis, tf);
1221 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
1223 struct scatterlist *sg;
1224 struct ahci_sg *ahci_sg;
1225 unsigned int n_sg = 0;
1230 * Next, the S/G list.
1232 ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
1233 ata_for_each_sg(sg, qc) {
1234 dma_addr_t addr = sg_dma_address(sg);
1235 u32 sg_len = sg_dma_len(sg);
1237 ahci_sg->addr = cpu_to_le32(addr & 0xffffffff);
1238 ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
1239 ahci_sg->flags_size = cpu_to_le32(sg_len - 1);
1248 static void ahci_qc_prep(struct ata_queued_cmd *qc)
1250 struct ata_port *ap = qc->ap;
1251 struct ahci_port_priv *pp = ap->private_data;
1252 int is_atapi = is_atapi_taskfile(&qc->tf);
1255 const u32 cmd_fis_len = 5; /* five dwords */
1256 unsigned int n_elem;
1259 * Fill in command table information. First, the header,
1260 * a SATA Register - Host to Device command FIS.
1262 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
1264 ata_tf_to_fis(&qc->tf, 0, 1, cmd_tbl);
1266 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
1267 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
1271 if (qc->flags & ATA_QCFLAG_DMAMAP)
1272 n_elem = ahci_fill_sg(qc, cmd_tbl);
1275 * Fill in command slot information.
1277 opts = cmd_fis_len | n_elem << 16;
1278 if (qc->tf.flags & ATA_TFLAG_WRITE)
1279 opts |= AHCI_CMD_WRITE;
1281 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
1283 ahci_fill_cmd_slot(pp, qc->tag, opts);
1286 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1288 struct ahci_port_priv *pp = ap->private_data;
1289 struct ata_eh_info *ehi = &ap->link.eh_info;
1290 unsigned int err_mask = 0, action = 0;
1291 struct ata_queued_cmd *qc;
1294 ata_ehi_clear_desc(ehi);
1296 /* AHCI needs SError cleared; otherwise, it might lock up */
1297 ahci_scr_read(ap, SCR_ERROR, &serror);
1298 ahci_scr_write(ap, SCR_ERROR, serror);
1300 /* analyze @irq_stat */
1301 ata_ehi_push_desc(ehi, "irq_stat 0x%08x", irq_stat);
1303 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
1304 if (ap->flags & AHCI_FLAG_IGN_IRQ_IF_ERR)
1305 irq_stat &= ~PORT_IRQ_IF_ERR;
1307 if (irq_stat & PORT_IRQ_TF_ERR) {
1308 err_mask |= AC_ERR_DEV;
1309 if (ap->flags & AHCI_FLAG_IGN_SERR_INTERNAL)
1310 serror &= ~SERR_INTERNAL;
1313 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
1314 err_mask |= AC_ERR_HOST_BUS;
1315 action |= ATA_EH_SOFTRESET;
1318 if (irq_stat & PORT_IRQ_IF_ERR) {
1319 err_mask |= AC_ERR_ATA_BUS;
1320 action |= ATA_EH_SOFTRESET;
1321 ata_ehi_push_desc(ehi, "interface fatal error");
1324 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
1325 ata_ehi_hotplugged(ehi);
1326 ata_ehi_push_desc(ehi, "%s", irq_stat & PORT_IRQ_CONNECT ?
1327 "connection status changed" : "PHY RDY changed");
1330 if (irq_stat & PORT_IRQ_UNK_FIS) {
1331 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
1333 err_mask |= AC_ERR_HSM;
1334 action |= ATA_EH_SOFTRESET;
1335 ata_ehi_push_desc(ehi, "unknown FIS %08x %08x %08x %08x",
1336 unk[0], unk[1], unk[2], unk[3]);
1339 /* okay, let's hand over to EH */
1340 ehi->serror |= serror;
1341 ehi->action |= action;
1343 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1345 qc->err_mask |= err_mask;
1347 ehi->err_mask |= err_mask;
1349 if (irq_stat & PORT_IRQ_FREEZE)
1350 ata_port_freeze(ap);
1355 static void ahci_port_intr(struct ata_port *ap)
1357 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1358 struct ata_eh_info *ehi = &ap->link.eh_info;
1359 struct ahci_port_priv *pp = ap->private_data;
1360 u32 status, qc_active;
1361 int rc, known_irq = 0;
1363 status = readl(port_mmio + PORT_IRQ_STAT);
1364 writel(status, port_mmio + PORT_IRQ_STAT);
1366 if (unlikely(status & PORT_IRQ_ERROR)) {
1367 ahci_error_intr(ap, status);
1371 if (ap->link.sactive)
1372 qc_active = readl(port_mmio + PORT_SCR_ACT);
1374 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
1376 rc = ata_qc_complete_multiple(ap, qc_active, NULL);
1380 ehi->err_mask |= AC_ERR_HSM;
1381 ehi->action |= ATA_EH_SOFTRESET;
1382 ata_port_freeze(ap);
1386 /* hmmm... a spurious interupt */
1388 /* if !NCQ, ignore. No modern ATA device has broken HSM
1389 * implementation for non-NCQ commands.
1391 if (!ap->link.sactive)
1394 if (status & PORT_IRQ_D2H_REG_FIS) {
1395 if (!pp->ncq_saw_d2h)
1396 ata_port_printk(ap, KERN_INFO,
1397 "D2H reg with I during NCQ, "
1398 "this message won't be printed again\n");
1399 pp->ncq_saw_d2h = 1;
1403 if (status & PORT_IRQ_DMAS_FIS) {
1404 if (!pp->ncq_saw_dmas)
1405 ata_port_printk(ap, KERN_INFO,
1406 "DMAS FIS during NCQ, "
1407 "this message won't be printed again\n");
1408 pp->ncq_saw_dmas = 1;
1412 if (status & PORT_IRQ_SDB_FIS) {
1413 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1415 if (le32_to_cpu(f[1])) {
1416 /* SDB FIS containing spurious completions
1417 * might be dangerous, whine and fail commands
1418 * with HSM violation. EH will turn off NCQ
1419 * after several such failures.
1421 ata_ehi_push_desc(ehi,
1422 "spurious completions during NCQ "
1423 "issue=0x%x SAct=0x%x FIS=%08x:%08x",
1424 readl(port_mmio + PORT_CMD_ISSUE),
1425 readl(port_mmio + PORT_SCR_ACT),
1426 le32_to_cpu(f[0]), le32_to_cpu(f[1]));
1427 ehi->err_mask |= AC_ERR_HSM;
1428 ehi->action |= ATA_EH_SOFTRESET;
1429 ata_port_freeze(ap);
1431 if (!pp->ncq_saw_sdb)
1432 ata_port_printk(ap, KERN_INFO,
1433 "spurious SDB FIS %08x:%08x during NCQ, "
1434 "this message won't be printed again\n",
1435 le32_to_cpu(f[0]), le32_to_cpu(f[1]));
1436 pp->ncq_saw_sdb = 1;
1442 ata_port_printk(ap, KERN_INFO, "spurious interrupt "
1443 "(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n",
1444 status, ap->link.active_tag, ap->link.sactive);
1447 static void ahci_irq_clear(struct ata_port *ap)
1452 static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
1454 struct ata_host *host = dev_instance;
1455 struct ahci_host_priv *hpriv;
1456 unsigned int i, handled = 0;
1458 u32 irq_stat, irq_ack = 0;
1462 hpriv = host->private_data;
1463 mmio = host->iomap[AHCI_PCI_BAR];
1465 /* sigh. 0xffffffff is a valid return from h/w */
1466 irq_stat = readl(mmio + HOST_IRQ_STAT);
1467 irq_stat &= hpriv->port_map;
1471 spin_lock(&host->lock);
1473 for (i = 0; i < host->n_ports; i++) {
1474 struct ata_port *ap;
1476 if (!(irq_stat & (1 << i)))
1479 ap = host->ports[i];
1482 VPRINTK("port %u\n", i);
1484 VPRINTK("port %u (no irq)\n", i);
1485 if (ata_ratelimit())
1486 dev_printk(KERN_WARNING, host->dev,
1487 "interrupt on disabled port %u\n", i);
1490 irq_ack |= (1 << i);
1494 writel(irq_ack, mmio + HOST_IRQ_STAT);
1498 spin_unlock(&host->lock);
1502 return IRQ_RETVAL(handled);
1505 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
1507 struct ata_port *ap = qc->ap;
1508 void __iomem *port_mmio = ahci_port_base(ap);
1510 if (qc->tf.protocol == ATA_PROT_NCQ)
1511 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
1512 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
1513 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1518 static void ahci_freeze(struct ata_port *ap)
1520 void __iomem *port_mmio = ahci_port_base(ap);
1523 writel(0, port_mmio + PORT_IRQ_MASK);
1526 static void ahci_thaw(struct ata_port *ap)
1528 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
1529 void __iomem *port_mmio = ahci_port_base(ap);
1533 tmp = readl(port_mmio + PORT_IRQ_STAT);
1534 writel(tmp, port_mmio + PORT_IRQ_STAT);
1535 writel(1 << ap->port_no, mmio + HOST_IRQ_STAT);
1537 /* turn IRQ back on */
1538 writel(DEF_PORT_IRQ, port_mmio + PORT_IRQ_MASK);
1541 static void ahci_error_handler(struct ata_port *ap)
1543 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1544 /* restart engine */
1545 ahci_stop_engine(ap);
1546 ahci_start_engine(ap);
1549 /* perform recovery */
1550 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_hardreset,
1554 static void ahci_vt8251_error_handler(struct ata_port *ap)
1556 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1557 /* restart engine */
1558 ahci_stop_engine(ap);
1559 ahci_start_engine(ap);
1562 /* perform recovery */
1563 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_vt8251_hardreset,
1567 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
1569 struct ata_port *ap = qc->ap;
1571 /* make DMA engine forget about the failed command */
1572 if (qc->flags & ATA_QCFLAG_FAILED)
1573 ahci_kick_engine(ap, 1);
1576 static int ahci_port_resume(struct ata_port *ap)
1579 ahci_start_port(ap);
1585 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
1587 const char *emsg = NULL;
1590 rc = ahci_deinit_port(ap, &emsg);
1592 ahci_power_down(ap);
1594 ata_port_printk(ap, KERN_ERR, "%s (%d)\n", emsg, rc);
1595 ahci_start_port(ap);
1601 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1603 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1604 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1607 if (mesg.event == PM_EVENT_SUSPEND) {
1608 /* AHCI spec rev1.1 section 8.3.3:
1609 * Software must disable interrupts prior to requesting a
1610 * transition of the HBA to D3 state.
1612 ctl = readl(mmio + HOST_CTL);
1613 ctl &= ~HOST_IRQ_EN;
1614 writel(ctl, mmio + HOST_CTL);
1615 readl(mmio + HOST_CTL); /* flush */
1618 return ata_pci_device_suspend(pdev, mesg);
1621 static int ahci_pci_device_resume(struct pci_dev *pdev)
1623 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1626 rc = ata_pci_device_do_resume(pdev);
1630 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
1631 rc = ahci_reset_controller(host);
1635 ahci_init_controller(host);
1638 ata_host_resume(host);
1644 static int ahci_port_start(struct ata_port *ap)
1646 struct device *dev = ap->host->dev;
1647 struct ahci_port_priv *pp;
1652 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1656 rc = ata_pad_alloc(ap, dev);
1660 mem = dmam_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma,
1664 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
1667 * First item in chunk of DMA memory: 32-slot command table,
1668 * 32 bytes each in size
1671 pp->cmd_slot_dma = mem_dma;
1673 mem += AHCI_CMD_SLOT_SZ;
1674 mem_dma += AHCI_CMD_SLOT_SZ;
1677 * Second item: Received-FIS area
1680 pp->rx_fis_dma = mem_dma;
1682 mem += AHCI_RX_FIS_SZ;
1683 mem_dma += AHCI_RX_FIS_SZ;
1686 * Third item: data area for storing a single command
1687 * and its scatter-gather table
1690 pp->cmd_tbl_dma = mem_dma;
1692 ap->private_data = pp;
1694 /* engage engines, captain */
1695 return ahci_port_resume(ap);
1698 static void ahci_port_stop(struct ata_port *ap)
1700 const char *emsg = NULL;
1703 /* de-initialize port */
1704 rc = ahci_deinit_port(ap, &emsg);
1706 ata_port_printk(ap, KERN_WARNING, "%s (%d)\n", emsg, rc);
1709 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
1714 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1715 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
1717 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1719 dev_printk(KERN_ERR, &pdev->dev,
1720 "64-bit DMA enable failed\n");
1725 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1727 dev_printk(KERN_ERR, &pdev->dev,
1728 "32-bit DMA enable failed\n");
1731 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1733 dev_printk(KERN_ERR, &pdev->dev,
1734 "32-bit consistent DMA enable failed\n");
1741 static void ahci_print_info(struct ata_host *host)
1743 struct ahci_host_priv *hpriv = host->private_data;
1744 struct pci_dev *pdev = to_pci_dev(host->dev);
1745 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1746 u32 vers, cap, impl, speed;
1747 const char *speed_s;
1751 vers = readl(mmio + HOST_VERSION);
1753 impl = hpriv->port_map;
1755 speed = (cap >> 20) & 0xf;
1758 else if (speed == 2)
1763 pci_read_config_word(pdev, 0x0a, &cc);
1764 if (cc == PCI_CLASS_STORAGE_IDE)
1766 else if (cc == PCI_CLASS_STORAGE_SATA)
1768 else if (cc == PCI_CLASS_STORAGE_RAID)
1773 dev_printk(KERN_INFO, &pdev->dev,
1774 "AHCI %02x%02x.%02x%02x "
1775 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
1778 (vers >> 24) & 0xff,
1779 (vers >> 16) & 0xff,
1783 ((cap >> 8) & 0x1f) + 1,
1789 dev_printk(KERN_INFO, &pdev->dev,
1795 cap & (1 << 31) ? "64bit " : "",
1796 cap & (1 << 30) ? "ncq " : "",
1797 cap & (1 << 29) ? "sntf " : "",
1798 cap & (1 << 28) ? "ilck " : "",
1799 cap & (1 << 27) ? "stag " : "",
1800 cap & (1 << 26) ? "pm " : "",
1801 cap & (1 << 25) ? "led " : "",
1803 cap & (1 << 24) ? "clo " : "",
1804 cap & (1 << 19) ? "nz " : "",
1805 cap & (1 << 18) ? "only " : "",
1806 cap & (1 << 17) ? "pmp " : "",
1807 cap & (1 << 15) ? "pio " : "",
1808 cap & (1 << 14) ? "slum " : "",
1809 cap & (1 << 13) ? "part " : ""
1813 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1815 static int printed_version;
1816 struct ata_port_info pi = ahci_port_info[ent->driver_data];
1817 const struct ata_port_info *ppi[] = { &pi, NULL };
1818 struct device *dev = &pdev->dev;
1819 struct ahci_host_priv *hpriv;
1820 struct ata_host *host;
1825 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
1827 if (!printed_version++)
1828 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1830 /* acquire resources */
1831 rc = pcim_enable_device(pdev);
1835 rc = pcim_iomap_regions(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
1837 pcim_pin_device(pdev);
1841 if ((pi.flags & AHCI_FLAG_NO_MSI) || pci_enable_msi(pdev))
1844 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1848 /* save initial config */
1849 ahci_save_initial_config(pdev, &pi, hpriv);
1852 if (hpriv->cap & HOST_CAP_NCQ)
1853 pi.flags |= ATA_FLAG_NCQ;
1855 host = ata_host_alloc_pinfo(&pdev->dev, ppi, fls(hpriv->port_map));
1858 host->iomap = pcim_iomap_table(pdev);
1859 host->private_data = hpriv;
1861 for (i = 0; i < host->n_ports; i++) {
1862 struct ata_port *ap = host->ports[i];
1863 void __iomem *port_mmio = ahci_port_base(ap);
1865 /* standard SATA port setup */
1866 if (hpriv->port_map & (1 << i))
1867 ap->ioaddr.cmd_addr = port_mmio;
1869 /* disabled/not-implemented port */
1871 ap->ops = &ata_dummy_port_ops;
1874 /* initialize adapter */
1875 rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
1879 rc = ahci_reset_controller(host);
1883 ahci_init_controller(host);
1884 ahci_print_info(host);
1886 pci_set_master(pdev);
1887 return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
1891 static int __init ahci_init(void)
1893 return pci_register_driver(&ahci_pci_driver);
1896 static void __exit ahci_exit(void)
1898 pci_unregister_driver(&ahci_pci_driver);
1902 MODULE_AUTHOR("Jeff Garzik");
1903 MODULE_DESCRIPTION("AHCI SATA low-level driver");
1904 MODULE_LICENSE("GPL");
1905 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
1906 MODULE_VERSION(DRV_VERSION);
1908 module_init(ahci_init);
1909 module_exit(ahci_exit);