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 "3.0"
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 */
80 board_ahci_vt8251 = 1,
81 board_ahci_ign_iferr = 2,
85 /* global controller registers */
86 HOST_CAP = 0x00, /* host capabilities */
87 HOST_CTL = 0x04, /* global host control */
88 HOST_IRQ_STAT = 0x08, /* interrupt status */
89 HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
90 HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
93 HOST_RESET = (1 << 0), /* reset controller; self-clear */
94 HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
95 HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
98 HOST_CAP_SSC = (1 << 14), /* Slumber capable */
99 HOST_CAP_PMP = (1 << 17), /* Port Multiplier support */
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 |
149 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
151 PORT_IRQ_HBUS_DATA_ERR,
152 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
153 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
154 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
157 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
158 PORT_CMD_PMP = (1 << 17), /* PMP attached */
159 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
160 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
161 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
162 PORT_CMD_CLO = (1 << 3), /* Command list override */
163 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
164 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
165 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
167 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
168 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
169 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
170 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
172 /* hpriv->flags bits */
173 AHCI_HFLAG_NO_NCQ = (1 << 0),
174 AHCI_HFLAG_IGN_IRQ_IF_ERR = (1 << 1), /* ignore IRQ_IF_ERR */
175 AHCI_HFLAG_IGN_SERR_INTERNAL = (1 << 2), /* ignore SERR_INTERNAL */
176 AHCI_HFLAG_32BIT_ONLY = (1 << 3), /* force 32bit */
177 AHCI_HFLAG_MV_PATA = (1 << 4), /* PATA port */
178 AHCI_HFLAG_NO_MSI = (1 << 5), /* no PCI MSI */
179 AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
182 AHCI_FLAG_NO_HOTPLUG = (1 << 24), /* ignore PxSERR.DIAG.N */
184 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
185 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
186 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN,
187 AHCI_LFLAG_COMMON = ATA_LFLAG_SKIP_D2H_BSY,
190 struct ahci_cmd_hdr {
205 struct ahci_host_priv {
206 unsigned int flags; /* AHCI_HFLAG_* */
207 u32 cap; /* cap to use */
208 u32 port_map; /* port map to use */
209 u32 saved_cap; /* saved initial cap */
210 u32 saved_port_map; /* saved initial port_map */
213 struct ahci_port_priv {
214 struct ata_link *active_link;
215 struct ahci_cmd_hdr *cmd_slot;
216 dma_addr_t cmd_slot_dma;
218 dma_addr_t cmd_tbl_dma;
220 dma_addr_t rx_fis_dma;
221 /* for NCQ spurious interrupt analysis */
222 unsigned int ncq_saw_d2h:1;
223 unsigned int ncq_saw_dmas:1;
224 unsigned int ncq_saw_sdb:1;
225 u32 intr_mask; /* interrupts to enable */
228 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
229 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
230 static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
231 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
232 static void ahci_irq_clear(struct ata_port *ap);
233 static int ahci_port_start(struct ata_port *ap);
234 static void ahci_port_stop(struct ata_port *ap);
235 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
236 static void ahci_qc_prep(struct ata_queued_cmd *qc);
237 static u8 ahci_check_status(struct ata_port *ap);
238 static void ahci_freeze(struct ata_port *ap);
239 static void ahci_thaw(struct ata_port *ap);
240 static void ahci_pmp_attach(struct ata_port *ap);
241 static void ahci_pmp_detach(struct ata_port *ap);
242 static void ahci_error_handler(struct ata_port *ap);
243 static void ahci_vt8251_error_handler(struct ata_port *ap);
244 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
245 static int ahci_port_resume(struct ata_port *ap);
246 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl);
247 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
250 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg);
251 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
252 static int ahci_pci_device_resume(struct pci_dev *pdev);
255 static struct scsi_host_template ahci_sht = {
256 .module = THIS_MODULE,
258 .ioctl = ata_scsi_ioctl,
259 .queuecommand = ata_scsi_queuecmd,
260 .change_queue_depth = ata_scsi_change_queue_depth,
261 .can_queue = AHCI_MAX_CMDS - 1,
262 .this_id = ATA_SHT_THIS_ID,
263 .sg_tablesize = AHCI_MAX_SG,
264 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
265 .emulated = ATA_SHT_EMULATED,
266 .use_clustering = AHCI_USE_CLUSTERING,
267 .proc_name = DRV_NAME,
268 .dma_boundary = AHCI_DMA_BOUNDARY,
269 .slave_configure = ata_scsi_slave_config,
270 .slave_destroy = ata_scsi_slave_destroy,
271 .bios_param = ata_std_bios_param,
274 static const struct ata_port_operations ahci_ops = {
275 .check_status = ahci_check_status,
276 .check_altstatus = ahci_check_status,
277 .dev_select = ata_noop_dev_select,
279 .tf_read = ahci_tf_read,
281 .qc_defer = sata_pmp_qc_defer_cmd_switch,
282 .qc_prep = ahci_qc_prep,
283 .qc_issue = ahci_qc_issue,
285 .irq_clear = ahci_irq_clear,
287 .scr_read = ahci_scr_read,
288 .scr_write = ahci_scr_write,
290 .freeze = ahci_freeze,
293 .error_handler = ahci_error_handler,
294 .post_internal_cmd = ahci_post_internal_cmd,
296 .pmp_attach = ahci_pmp_attach,
297 .pmp_detach = ahci_pmp_detach,
300 .port_suspend = ahci_port_suspend,
301 .port_resume = ahci_port_resume,
304 .port_start = ahci_port_start,
305 .port_stop = ahci_port_stop,
308 static const struct ata_port_operations ahci_vt8251_ops = {
309 .check_status = ahci_check_status,
310 .check_altstatus = ahci_check_status,
311 .dev_select = ata_noop_dev_select,
313 .tf_read = ahci_tf_read,
315 .qc_defer = sata_pmp_qc_defer_cmd_switch,
316 .qc_prep = ahci_qc_prep,
317 .qc_issue = ahci_qc_issue,
319 .irq_clear = ahci_irq_clear,
321 .scr_read = ahci_scr_read,
322 .scr_write = ahci_scr_write,
324 .freeze = ahci_freeze,
327 .error_handler = ahci_vt8251_error_handler,
328 .post_internal_cmd = ahci_post_internal_cmd,
330 .pmp_attach = ahci_pmp_attach,
331 .pmp_detach = ahci_pmp_detach,
334 .port_suspend = ahci_port_suspend,
335 .port_resume = ahci_port_resume,
338 .port_start = ahci_port_start,
339 .port_stop = ahci_port_stop,
342 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
344 static const struct ata_port_info ahci_port_info[] = {
347 .flags = AHCI_FLAG_COMMON,
348 .link_flags = AHCI_LFLAG_COMMON,
349 .pio_mask = 0x1f, /* pio0-4 */
350 .udma_mask = ATA_UDMA6,
351 .port_ops = &ahci_ops,
353 /* board_ahci_vt8251 */
355 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
356 .flags = AHCI_FLAG_COMMON,
357 .link_flags = AHCI_LFLAG_COMMON | ATA_LFLAG_HRST_TO_RESUME,
358 .pio_mask = 0x1f, /* pio0-4 */
359 .udma_mask = ATA_UDMA6,
360 .port_ops = &ahci_vt8251_ops,
362 /* board_ahci_ign_iferr */
364 AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR),
365 .flags = AHCI_FLAG_COMMON,
366 .link_flags = AHCI_LFLAG_COMMON,
367 .pio_mask = 0x1f, /* pio0-4 */
368 .udma_mask = ATA_UDMA6,
369 .port_ops = &ahci_ops,
371 /* board_ahci_sb600 */
373 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
374 AHCI_HFLAG_32BIT_ONLY | AHCI_HFLAG_NO_PMP),
375 .flags = AHCI_FLAG_COMMON,
376 .link_flags = AHCI_LFLAG_COMMON,
377 .pio_mask = 0x1f, /* pio0-4 */
378 .udma_mask = ATA_UDMA6,
379 .port_ops = &ahci_ops,
383 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
385 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
386 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
387 .link_flags = AHCI_LFLAG_COMMON,
388 .pio_mask = 0x1f, /* pio0-4 */
389 .udma_mask = ATA_UDMA6,
390 .port_ops = &ahci_ops,
394 static const struct pci_device_id ahci_pci_tbl[] = {
396 { PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
397 { PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
398 { PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
399 { PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
400 { PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
401 { PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
402 { PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
403 { PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
404 { PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
405 { PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
406 { PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
407 { PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* ICH8 */
408 { PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
409 { PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
410 { PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
411 { PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
412 { PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
413 { PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
414 { PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
415 { PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
416 { PCI_VDEVICE(INTEL, 0x2929), board_ahci }, /* ICH9M */
417 { PCI_VDEVICE(INTEL, 0x292a), board_ahci }, /* ICH9M */
418 { PCI_VDEVICE(INTEL, 0x292b), board_ahci }, /* ICH9M */
419 { PCI_VDEVICE(INTEL, 0x292c), board_ahci }, /* ICH9M */
420 { PCI_VDEVICE(INTEL, 0x292f), board_ahci }, /* ICH9M */
421 { PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
422 { PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */
423 { PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
424 { PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
426 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
427 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
428 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
431 { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
432 { PCI_VDEVICE(ATI, 0x4390), board_ahci_sb600 }, /* ATI SB700/800 */
433 { PCI_VDEVICE(ATI, 0x4391), board_ahci_sb600 }, /* ATI SB700/800 */
434 { PCI_VDEVICE(ATI, 0x4392), board_ahci_sb600 }, /* ATI SB700/800 */
435 { PCI_VDEVICE(ATI, 0x4393), board_ahci_sb600 }, /* ATI SB700/800 */
436 { PCI_VDEVICE(ATI, 0x4394), board_ahci_sb600 }, /* ATI SB700/800 */
437 { PCI_VDEVICE(ATI, 0x4395), board_ahci_sb600 }, /* ATI SB700/800 */
440 { PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
441 { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
444 { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci }, /* MCP65 */
445 { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci }, /* MCP65 */
446 { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci }, /* MCP65 */
447 { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci }, /* MCP65 */
448 { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci }, /* MCP65 */
449 { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci }, /* MCP65 */
450 { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci }, /* MCP65 */
451 { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci }, /* MCP65 */
452 { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci }, /* MCP67 */
453 { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci }, /* MCP67 */
454 { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci }, /* MCP67 */
455 { PCI_VDEVICE(NVIDIA, 0x0553), board_ahci }, /* MCP67 */
456 { PCI_VDEVICE(NVIDIA, 0x0554), board_ahci }, /* MCP67 */
457 { PCI_VDEVICE(NVIDIA, 0x0555), board_ahci }, /* MCP67 */
458 { PCI_VDEVICE(NVIDIA, 0x0556), board_ahci }, /* MCP67 */
459 { PCI_VDEVICE(NVIDIA, 0x0557), board_ahci }, /* MCP67 */
460 { PCI_VDEVICE(NVIDIA, 0x0558), board_ahci }, /* MCP67 */
461 { PCI_VDEVICE(NVIDIA, 0x0559), board_ahci }, /* MCP67 */
462 { PCI_VDEVICE(NVIDIA, 0x055a), board_ahci }, /* MCP67 */
463 { PCI_VDEVICE(NVIDIA, 0x055b), board_ahci }, /* MCP67 */
464 { PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci }, /* MCP73 */
465 { PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci }, /* MCP73 */
466 { PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci }, /* MCP73 */
467 { PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci }, /* MCP73 */
468 { PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci }, /* MCP73 */
469 { PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci }, /* MCP73 */
470 { PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci }, /* MCP73 */
471 { PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci }, /* MCP73 */
472 { PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci }, /* MCP73 */
473 { PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci }, /* MCP73 */
474 { PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci }, /* MCP73 */
475 { PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci }, /* MCP73 */
476 { PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci }, /* MCP77 */
477 { PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci }, /* MCP77 */
478 { PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci }, /* MCP77 */
479 { PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci }, /* MCP77 */
480 { PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci }, /* MCP77 */
481 { PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci }, /* MCP77 */
482 { PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci }, /* MCP77 */
483 { PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci }, /* MCP77 */
484 { PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci }, /* MCP77 */
485 { PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci }, /* MCP77 */
486 { PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci }, /* MCP77 */
487 { PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci }, /* MCP77 */
488 { PCI_VDEVICE(NVIDIA, 0x0ab8), board_ahci }, /* MCP79 */
489 { PCI_VDEVICE(NVIDIA, 0x0ab9), board_ahci }, /* MCP79 */
490 { PCI_VDEVICE(NVIDIA, 0x0aba), board_ahci }, /* MCP79 */
491 { PCI_VDEVICE(NVIDIA, 0x0abb), board_ahci }, /* MCP79 */
492 { PCI_VDEVICE(NVIDIA, 0x0abc), board_ahci }, /* MCP79 */
493 { PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci }, /* MCP79 */
494 { PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci }, /* MCP79 */
495 { PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci }, /* MCP79 */
498 { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
499 { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 966 */
500 { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
503 { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
505 /* Generic, PCI class code for AHCI */
506 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
507 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
509 { } /* terminate list */
513 static struct pci_driver ahci_pci_driver = {
515 .id_table = ahci_pci_tbl,
516 .probe = ahci_init_one,
517 .remove = ata_pci_remove_one,
519 .suspend = ahci_pci_device_suspend,
520 .resume = ahci_pci_device_resume,
525 static inline int ahci_nr_ports(u32 cap)
527 return (cap & 0x1f) + 1;
530 static inline void __iomem *__ahci_port_base(struct ata_host *host,
531 unsigned int port_no)
533 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
535 return mmio + 0x100 + (port_no * 0x80);
538 static inline void __iomem *ahci_port_base(struct ata_port *ap)
540 return __ahci_port_base(ap->host, ap->port_no);
544 * ahci_save_initial_config - Save and fixup initial config values
545 * @pdev: target PCI device
546 * @hpriv: host private area to store config values
548 * Some registers containing configuration info might be setup by
549 * BIOS and might be cleared on reset. This function saves the
550 * initial values of those registers into @hpriv such that they
551 * can be restored after controller reset.
553 * If inconsistent, config values are fixed up by this function.
558 static void ahci_save_initial_config(struct pci_dev *pdev,
559 struct ahci_host_priv *hpriv)
561 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
565 /* Values prefixed with saved_ are written back to host after
566 * reset. Values without are used for driver operation.
568 hpriv->saved_cap = cap = readl(mmio + HOST_CAP);
569 hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
571 /* some chips have errata preventing 64bit use */
572 if ((cap & HOST_CAP_64) && (hpriv->flags & AHCI_HFLAG_32BIT_ONLY)) {
573 dev_printk(KERN_INFO, &pdev->dev,
574 "controller can't do 64bit DMA, forcing 32bit\n");
578 if ((cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_NO_NCQ)) {
579 dev_printk(KERN_INFO, &pdev->dev,
580 "controller can't do NCQ, turning off CAP_NCQ\n");
581 cap &= ~HOST_CAP_NCQ;
584 if ((cap && HOST_CAP_PMP) && (hpriv->flags & AHCI_HFLAG_NO_PMP)) {
585 dev_printk(KERN_INFO, &pdev->dev,
586 "controller can't do PMP, turning off CAP_PMP\n");
587 cap &= ~HOST_CAP_PMP;
591 * Temporary Marvell 6145 hack: PATA port presence
592 * is asserted through the standard AHCI port
593 * presence register, as bit 4 (counting from 0)
595 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
596 dev_printk(KERN_ERR, &pdev->dev,
597 "MV_AHCI HACK: port_map %x -> %x\n",
599 hpriv->port_map & 0xf);
604 /* cross check port_map and cap.n_ports */
606 u32 tmp_port_map = port_map;
607 int n_ports = ahci_nr_ports(cap);
609 for (i = 0; i < AHCI_MAX_PORTS && n_ports; i++) {
610 if (tmp_port_map & (1 << i)) {
612 tmp_port_map &= ~(1 << i);
616 /* If n_ports and port_map are inconsistent, whine and
617 * clear port_map and let it be generated from n_ports.
619 if (n_ports || tmp_port_map) {
620 dev_printk(KERN_WARNING, &pdev->dev,
621 "nr_ports (%u) and implemented port map "
622 "(0x%x) don't match, using nr_ports\n",
623 ahci_nr_ports(cap), port_map);
628 /* fabricate port_map from cap.nr_ports */
630 port_map = (1 << ahci_nr_ports(cap)) - 1;
631 dev_printk(KERN_WARNING, &pdev->dev,
632 "forcing PORTS_IMPL to 0x%x\n", port_map);
634 /* write the fixed up value to the PI register */
635 hpriv->saved_port_map = port_map;
638 /* record values to use during operation */
640 hpriv->port_map = port_map;
644 * ahci_restore_initial_config - Restore initial config
645 * @host: target ATA host
647 * Restore initial config stored by ahci_save_initial_config().
652 static void ahci_restore_initial_config(struct ata_host *host)
654 struct ahci_host_priv *hpriv = host->private_data;
655 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
657 writel(hpriv->saved_cap, mmio + HOST_CAP);
658 writel(hpriv->saved_port_map, mmio + HOST_PORTS_IMPL);
659 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
662 static unsigned ahci_scr_offset(struct ata_port *ap, unsigned int sc_reg)
664 static const int offset[] = {
665 [SCR_STATUS] = PORT_SCR_STAT,
666 [SCR_CONTROL] = PORT_SCR_CTL,
667 [SCR_ERROR] = PORT_SCR_ERR,
668 [SCR_ACTIVE] = PORT_SCR_ACT,
669 [SCR_NOTIFICATION] = PORT_SCR_NTF,
671 struct ahci_host_priv *hpriv = ap->host->private_data;
673 if (sc_reg < ARRAY_SIZE(offset) &&
674 (sc_reg != SCR_NOTIFICATION || (hpriv->cap & HOST_CAP_SNTF)))
675 return offset[sc_reg];
679 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
681 void __iomem *port_mmio = ahci_port_base(ap);
682 int offset = ahci_scr_offset(ap, sc_reg);
685 *val = readl(port_mmio + offset);
691 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
693 void __iomem *port_mmio = ahci_port_base(ap);
694 int offset = ahci_scr_offset(ap, sc_reg);
697 writel(val, port_mmio + offset);
703 static void ahci_start_engine(struct ata_port *ap)
705 void __iomem *port_mmio = ahci_port_base(ap);
709 tmp = readl(port_mmio + PORT_CMD);
710 tmp |= PORT_CMD_START;
711 writel(tmp, port_mmio + PORT_CMD);
712 readl(port_mmio + PORT_CMD); /* flush */
715 static int ahci_stop_engine(struct ata_port *ap)
717 void __iomem *port_mmio = ahci_port_base(ap);
720 tmp = readl(port_mmio + PORT_CMD);
722 /* check if the HBA is idle */
723 if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
726 /* setting HBA to idle */
727 tmp &= ~PORT_CMD_START;
728 writel(tmp, port_mmio + PORT_CMD);
730 /* wait for engine to stop. This could be as long as 500 msec */
731 tmp = ata_wait_register(port_mmio + PORT_CMD,
732 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
733 if (tmp & PORT_CMD_LIST_ON)
739 static void ahci_start_fis_rx(struct ata_port *ap)
741 void __iomem *port_mmio = ahci_port_base(ap);
742 struct ahci_host_priv *hpriv = ap->host->private_data;
743 struct ahci_port_priv *pp = ap->private_data;
746 /* set FIS registers */
747 if (hpriv->cap & HOST_CAP_64)
748 writel((pp->cmd_slot_dma >> 16) >> 16,
749 port_mmio + PORT_LST_ADDR_HI);
750 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
752 if (hpriv->cap & HOST_CAP_64)
753 writel((pp->rx_fis_dma >> 16) >> 16,
754 port_mmio + PORT_FIS_ADDR_HI);
755 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
757 /* enable FIS reception */
758 tmp = readl(port_mmio + PORT_CMD);
759 tmp |= PORT_CMD_FIS_RX;
760 writel(tmp, port_mmio + PORT_CMD);
763 readl(port_mmio + PORT_CMD);
766 static int ahci_stop_fis_rx(struct ata_port *ap)
768 void __iomem *port_mmio = ahci_port_base(ap);
771 /* disable FIS reception */
772 tmp = readl(port_mmio + PORT_CMD);
773 tmp &= ~PORT_CMD_FIS_RX;
774 writel(tmp, port_mmio + PORT_CMD);
776 /* wait for completion, spec says 500ms, give it 1000 */
777 tmp = ata_wait_register(port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
778 PORT_CMD_FIS_ON, 10, 1000);
779 if (tmp & PORT_CMD_FIS_ON)
785 static void ahci_power_up(struct ata_port *ap)
787 struct ahci_host_priv *hpriv = ap->host->private_data;
788 void __iomem *port_mmio = ahci_port_base(ap);
791 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
794 if (hpriv->cap & HOST_CAP_SSS) {
795 cmd |= PORT_CMD_SPIN_UP;
796 writel(cmd, port_mmio + PORT_CMD);
800 writel(cmd | PORT_CMD_ICC_ACTIVE, port_mmio + PORT_CMD);
804 static void ahci_power_down(struct ata_port *ap)
806 struct ahci_host_priv *hpriv = ap->host->private_data;
807 void __iomem *port_mmio = ahci_port_base(ap);
810 if (!(hpriv->cap & HOST_CAP_SSS))
813 /* put device into listen mode, first set PxSCTL.DET to 0 */
814 scontrol = readl(port_mmio + PORT_SCR_CTL);
816 writel(scontrol, port_mmio + PORT_SCR_CTL);
818 /* then set PxCMD.SUD to 0 */
819 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
820 cmd &= ~PORT_CMD_SPIN_UP;
821 writel(cmd, port_mmio + PORT_CMD);
825 static void ahci_start_port(struct ata_port *ap)
827 /* enable FIS reception */
828 ahci_start_fis_rx(ap);
831 ahci_start_engine(ap);
834 static int ahci_deinit_port(struct ata_port *ap, const char **emsg)
839 rc = ahci_stop_engine(ap);
841 *emsg = "failed to stop engine";
845 /* disable FIS reception */
846 rc = ahci_stop_fis_rx(ap);
848 *emsg = "failed stop FIS RX";
855 static int ahci_reset_controller(struct ata_host *host)
857 struct pci_dev *pdev = to_pci_dev(host->dev);
858 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
861 /* we must be in AHCI mode, before using anything
862 * AHCI-specific, such as HOST_RESET.
864 tmp = readl(mmio + HOST_CTL);
865 if (!(tmp & HOST_AHCI_EN))
866 writel(tmp | HOST_AHCI_EN, mmio + HOST_CTL);
868 /* global controller reset */
869 if ((tmp & HOST_RESET) == 0) {
870 writel(tmp | HOST_RESET, mmio + HOST_CTL);
871 readl(mmio + HOST_CTL); /* flush */
874 /* reset must complete within 1 second, or
875 * the hardware should be considered fried.
879 tmp = readl(mmio + HOST_CTL);
880 if (tmp & HOST_RESET) {
881 dev_printk(KERN_ERR, host->dev,
882 "controller reset failed (0x%x)\n", tmp);
886 /* turn on AHCI mode */
887 writel(HOST_AHCI_EN, mmio + HOST_CTL);
888 (void) readl(mmio + HOST_CTL); /* flush */
890 /* some registers might be cleared on reset. restore initial values */
891 ahci_restore_initial_config(host);
893 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
897 pci_read_config_word(pdev, 0x92, &tmp16);
899 pci_write_config_word(pdev, 0x92, tmp16);
905 static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap,
906 int port_no, void __iomem *mmio,
907 void __iomem *port_mmio)
909 const char *emsg = NULL;
913 /* make sure port is not active */
914 rc = ahci_deinit_port(ap, &emsg);
916 dev_printk(KERN_WARNING, &pdev->dev,
917 "%s (%d)\n", emsg, rc);
920 tmp = readl(port_mmio + PORT_SCR_ERR);
921 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
922 writel(tmp, port_mmio + PORT_SCR_ERR);
925 tmp = readl(port_mmio + PORT_IRQ_STAT);
926 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
928 writel(tmp, port_mmio + PORT_IRQ_STAT);
930 writel(1 << port_no, mmio + HOST_IRQ_STAT);
933 static void ahci_init_controller(struct ata_host *host)
935 struct ahci_host_priv *hpriv = host->private_data;
936 struct pci_dev *pdev = to_pci_dev(host->dev);
937 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
939 void __iomem *port_mmio;
942 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
943 port_mmio = __ahci_port_base(host, 4);
945 writel(0, port_mmio + PORT_IRQ_MASK);
948 tmp = readl(port_mmio + PORT_IRQ_STAT);
949 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
951 writel(tmp, port_mmio + PORT_IRQ_STAT);
954 for (i = 0; i < host->n_ports; i++) {
955 struct ata_port *ap = host->ports[i];
957 port_mmio = ahci_port_base(ap);
958 if (ata_port_is_dummy(ap))
961 ahci_port_init(pdev, ap, i, mmio, port_mmio);
964 tmp = readl(mmio + HOST_CTL);
965 VPRINTK("HOST_CTL 0x%x\n", tmp);
966 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
967 tmp = readl(mmio + HOST_CTL);
968 VPRINTK("HOST_CTL 0x%x\n", tmp);
971 static unsigned int ahci_dev_classify(struct ata_port *ap)
973 void __iomem *port_mmio = ahci_port_base(ap);
974 struct ata_taskfile tf;
977 tmp = readl(port_mmio + PORT_SIG);
978 tf.lbah = (tmp >> 24) & 0xff;
979 tf.lbam = (tmp >> 16) & 0xff;
980 tf.lbal = (tmp >> 8) & 0xff;
981 tf.nsect = (tmp) & 0xff;
983 return ata_dev_classify(&tf);
986 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
989 dma_addr_t cmd_tbl_dma;
991 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
993 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
994 pp->cmd_slot[tag].status = 0;
995 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
996 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
999 static int ahci_kick_engine(struct ata_port *ap, int force_restart)
1001 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1002 struct ahci_host_priv *hpriv = ap->host->private_data;
1006 /* do we need to kick the port? */
1007 busy = ahci_check_status(ap) & (ATA_BUSY | ATA_DRQ);
1008 if (!busy && !force_restart)
1012 rc = ahci_stop_engine(ap);
1016 /* need to do CLO? */
1022 if (!(hpriv->cap & HOST_CAP_CLO)) {
1028 tmp = readl(port_mmio + PORT_CMD);
1029 tmp |= PORT_CMD_CLO;
1030 writel(tmp, port_mmio + PORT_CMD);
1033 tmp = ata_wait_register(port_mmio + PORT_CMD,
1034 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
1035 if (tmp & PORT_CMD_CLO)
1038 /* restart engine */
1040 ahci_start_engine(ap);
1044 static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
1045 struct ata_taskfile *tf, int is_cmd, u16 flags,
1046 unsigned long timeout_msec)
1048 const u32 cmd_fis_len = 5; /* five dwords */
1049 struct ahci_port_priv *pp = ap->private_data;
1050 void __iomem *port_mmio = ahci_port_base(ap);
1051 u8 *fis = pp->cmd_tbl;
1054 /* prep the command */
1055 ata_tf_to_fis(tf, pmp, is_cmd, fis);
1056 ahci_fill_cmd_slot(pp, 0, cmd_fis_len | flags | (pmp << 12));
1059 writel(1, port_mmio + PORT_CMD_ISSUE);
1062 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1,
1065 ahci_kick_engine(ap, 1);
1069 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1074 static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
1075 int pmp, unsigned long deadline)
1077 struct ata_port *ap = link->ap;
1078 const char *reason = NULL;
1079 unsigned long now, msecs;
1080 struct ata_taskfile tf;
1085 if (ata_link_offline(link)) {
1086 DPRINTK("PHY reports no device\n");
1087 *class = ATA_DEV_NONE;
1091 /* prepare for SRST (AHCI-1.1 10.4.1) */
1092 rc = ahci_kick_engine(ap, 1);
1094 ata_link_printk(link, KERN_WARNING,
1095 "failed to reset engine (errno=%d)", rc);
1097 ata_tf_init(link->device, &tf);
1099 /* issue the first D2H Register FIS */
1102 if (time_after(now, deadline))
1103 msecs = jiffies_to_msecs(deadline - now);
1106 if (ahci_exec_polled_cmd(ap, pmp, &tf, 0,
1107 AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY, msecs)) {
1109 reason = "1st FIS failed";
1113 /* spec says at least 5us, but be generous and sleep for 1ms */
1116 /* issue the second D2H Register FIS */
1117 tf.ctl &= ~ATA_SRST;
1118 ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
1120 /* spec mandates ">= 2ms" before checking status.
1121 * We wait 150ms, because that was the magic delay used for
1122 * ATAPI devices in Hale Landis's ATADRVR, for the period of time
1123 * between when the ATA command register is written, and then
1124 * status is checked. Because waiting for "a while" before
1125 * checking status is fine, post SRST, we perform this magic
1126 * delay here as well.
1130 rc = ata_wait_ready(ap, deadline);
1131 /* link occupied, -ENODEV too is an error */
1133 reason = "device not ready";
1136 *class = ahci_dev_classify(ap);
1138 DPRINTK("EXIT, class=%u\n", *class);
1142 ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
1146 static int ahci_softreset(struct ata_link *link, unsigned int *class,
1147 unsigned long deadline)
1151 if (link->ap->flags & ATA_FLAG_PMP)
1152 pmp = SATA_PMP_CTRL_PORT;
1154 return ahci_do_softreset(link, class, pmp, deadline);
1157 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
1158 unsigned long deadline)
1160 struct ata_port *ap = link->ap;
1161 struct ahci_port_priv *pp = ap->private_data;
1162 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1163 struct ata_taskfile tf;
1168 ahci_stop_engine(ap);
1170 /* clear D2H reception area to properly wait for D2H FIS */
1171 ata_tf_init(link->device, &tf);
1173 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1175 rc = sata_std_hardreset(link, class, deadline);
1177 ahci_start_engine(ap);
1179 if (rc == 0 && ata_link_online(link))
1180 *class = ahci_dev_classify(ap);
1181 if (rc != -EAGAIN && *class == ATA_DEV_UNKNOWN)
1182 *class = ATA_DEV_NONE;
1184 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1188 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
1189 unsigned long deadline)
1191 struct ata_port *ap = link->ap;
1197 ahci_stop_engine(ap);
1199 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1202 /* vt8251 needs SError cleared for the port to operate */
1203 ahci_scr_read(ap, SCR_ERROR, &serror);
1204 ahci_scr_write(ap, SCR_ERROR, serror);
1206 ahci_start_engine(ap);
1208 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1210 /* vt8251 doesn't clear BSY on signature FIS reception,
1211 * request follow-up softreset.
1213 return rc ?: -EAGAIN;
1216 static void ahci_postreset(struct ata_link *link, unsigned int *class)
1218 struct ata_port *ap = link->ap;
1219 void __iomem *port_mmio = ahci_port_base(ap);
1222 ata_std_postreset(link, class);
1224 /* Make sure port's ATAPI bit is set appropriately */
1225 new_tmp = tmp = readl(port_mmio + PORT_CMD);
1226 if (*class == ATA_DEV_ATAPI)
1227 new_tmp |= PORT_CMD_ATAPI;
1229 new_tmp &= ~PORT_CMD_ATAPI;
1230 if (new_tmp != tmp) {
1231 writel(new_tmp, port_mmio + PORT_CMD);
1232 readl(port_mmio + PORT_CMD); /* flush */
1236 static int ahci_pmp_softreset(struct ata_link *link, unsigned int *class,
1237 unsigned long deadline)
1239 return ahci_do_softreset(link, class, link->pmp, deadline);
1242 static u8 ahci_check_status(struct ata_port *ap)
1244 void __iomem *mmio = ap->ioaddr.cmd_addr;
1246 return readl(mmio + PORT_TFDATA) & 0xFF;
1249 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
1251 struct ahci_port_priv *pp = ap->private_data;
1252 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1254 ata_tf_from_fis(d2h_fis, tf);
1257 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
1259 struct scatterlist *sg;
1260 struct ahci_sg *ahci_sg;
1261 unsigned int n_sg = 0;
1266 * Next, the S/G list.
1268 ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
1269 ata_for_each_sg(sg, qc) {
1270 dma_addr_t addr = sg_dma_address(sg);
1271 u32 sg_len = sg_dma_len(sg);
1273 ahci_sg->addr = cpu_to_le32(addr & 0xffffffff);
1274 ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
1275 ahci_sg->flags_size = cpu_to_le32(sg_len - 1);
1284 static void ahci_qc_prep(struct ata_queued_cmd *qc)
1286 struct ata_port *ap = qc->ap;
1287 struct ahci_port_priv *pp = ap->private_data;
1288 int is_atapi = is_atapi_taskfile(&qc->tf);
1291 const u32 cmd_fis_len = 5; /* five dwords */
1292 unsigned int n_elem;
1295 * Fill in command table information. First, the header,
1296 * a SATA Register - Host to Device command FIS.
1298 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
1300 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, cmd_tbl);
1302 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
1303 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
1307 if (qc->flags & ATA_QCFLAG_DMAMAP)
1308 n_elem = ahci_fill_sg(qc, cmd_tbl);
1311 * Fill in command slot information.
1313 opts = cmd_fis_len | n_elem << 16 | (qc->dev->link->pmp << 12);
1314 if (qc->tf.flags & ATA_TFLAG_WRITE)
1315 opts |= AHCI_CMD_WRITE;
1317 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
1319 ahci_fill_cmd_slot(pp, qc->tag, opts);
1322 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1324 struct ahci_host_priv *hpriv = ap->host->private_data;
1325 struct ahci_port_priv *pp = ap->private_data;
1326 struct ata_eh_info *host_ehi = &ap->link.eh_info;
1327 struct ata_link *link = NULL;
1328 struct ata_queued_cmd *active_qc;
1329 struct ata_eh_info *active_ehi;
1332 /* determine active link */
1333 ata_port_for_each_link(link, ap)
1334 if (ata_link_active(link))
1339 active_qc = ata_qc_from_tag(ap, link->active_tag);
1340 active_ehi = &link->eh_info;
1342 /* record irq stat */
1343 ata_ehi_clear_desc(host_ehi);
1344 ata_ehi_push_desc(host_ehi, "irq_stat 0x%08x", irq_stat);
1346 /* AHCI needs SError cleared; otherwise, it might lock up */
1347 ahci_scr_read(ap, SCR_ERROR, &serror);
1348 ahci_scr_write(ap, SCR_ERROR, serror);
1349 host_ehi->serror |= serror;
1351 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
1352 if (hpriv->flags & AHCI_HFLAG_IGN_IRQ_IF_ERR)
1353 irq_stat &= ~PORT_IRQ_IF_ERR;
1355 if (irq_stat & PORT_IRQ_TF_ERR) {
1356 /* If qc is active, charge it; otherwise, the active
1357 * link. There's no active qc on NCQ errors. It will
1358 * be determined by EH by reading log page 10h.
1361 active_qc->err_mask |= AC_ERR_DEV;
1363 active_ehi->err_mask |= AC_ERR_DEV;
1365 if (hpriv->flags & AHCI_HFLAG_IGN_SERR_INTERNAL)
1366 host_ehi->serror &= ~SERR_INTERNAL;
1369 if (irq_stat & PORT_IRQ_UNK_FIS) {
1370 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
1372 active_ehi->err_mask |= AC_ERR_HSM;
1373 active_ehi->action |= ATA_EH_SOFTRESET;
1374 ata_ehi_push_desc(active_ehi,
1375 "unknown FIS %08x %08x %08x %08x" ,
1376 unk[0], unk[1], unk[2], unk[3]);
1379 if (ap->nr_pmp_links && (irq_stat & PORT_IRQ_BAD_PMP)) {
1380 active_ehi->err_mask |= AC_ERR_HSM;
1381 active_ehi->action |= ATA_EH_SOFTRESET;
1382 ata_ehi_push_desc(active_ehi, "incorrect PMP");
1385 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
1386 host_ehi->err_mask |= AC_ERR_HOST_BUS;
1387 host_ehi->action |= ATA_EH_SOFTRESET;
1388 ata_ehi_push_desc(host_ehi, "host bus error");
1391 if (irq_stat & PORT_IRQ_IF_ERR) {
1392 host_ehi->err_mask |= AC_ERR_ATA_BUS;
1393 host_ehi->action |= ATA_EH_SOFTRESET;
1394 ata_ehi_push_desc(host_ehi, "interface fatal error");
1397 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
1398 ata_ehi_hotplugged(host_ehi);
1399 ata_ehi_push_desc(host_ehi, "%s",
1400 irq_stat & PORT_IRQ_CONNECT ?
1401 "connection status changed" : "PHY RDY changed");
1404 /* okay, let's hand over to EH */
1406 if (irq_stat & PORT_IRQ_FREEZE)
1407 ata_port_freeze(ap);
1412 static void ahci_port_intr(struct ata_port *ap)
1414 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1415 struct ata_eh_info *ehi = &ap->link.eh_info;
1416 struct ahci_port_priv *pp = ap->private_data;
1417 struct ahci_host_priv *hpriv = ap->host->private_data;
1418 int resetting = !!(ap->pflags & ATA_PFLAG_RESETTING);
1419 u32 status, qc_active;
1420 int rc, known_irq = 0;
1422 status = readl(port_mmio + PORT_IRQ_STAT);
1423 writel(status, port_mmio + PORT_IRQ_STAT);
1425 /* ignore BAD_PMP while resetting */
1426 if (unlikely(resetting))
1427 status &= ~PORT_IRQ_BAD_PMP;
1429 if (unlikely(status & PORT_IRQ_ERROR)) {
1430 ahci_error_intr(ap, status);
1434 if (status & PORT_IRQ_SDB_FIS) {
1435 /* If SNotification is available, leave notification
1436 * handling to sata_async_notification(). If not,
1437 * emulate it by snooping SDB FIS RX area.
1439 * Snooping FIS RX area is probably cheaper than
1440 * poking SNotification but some constrollers which
1441 * implement SNotification, ICH9 for example, don't
1442 * store AN SDB FIS into receive area.
1444 if (hpriv->cap & HOST_CAP_SNTF)
1445 sata_async_notification(ap);
1447 /* If the 'N' bit in word 0 of the FIS is set,
1448 * we just received asynchronous notification.
1449 * Tell libata about it.
1451 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1452 u32 f0 = le32_to_cpu(f[0]);
1455 sata_async_notification(ap);
1459 /* pp->active_link is valid iff any command is in flight */
1460 if (ap->qc_active && pp->active_link->sactive)
1461 qc_active = readl(port_mmio + PORT_SCR_ACT);
1463 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
1465 rc = ata_qc_complete_multiple(ap, qc_active, NULL);
1467 /* If resetting, spurious or invalid completions are expected,
1468 * return unconditionally.
1476 ehi->err_mask |= AC_ERR_HSM;
1477 ehi->action |= ATA_EH_SOFTRESET;
1478 ata_port_freeze(ap);
1482 /* hmmm... a spurious interupt */
1484 /* if !NCQ, ignore. No modern ATA device has broken HSM
1485 * implementation for non-NCQ commands.
1487 if (!ap->link.sactive)
1490 if (status & PORT_IRQ_D2H_REG_FIS) {
1491 if (!pp->ncq_saw_d2h)
1492 ata_port_printk(ap, KERN_INFO,
1493 "D2H reg with I during NCQ, "
1494 "this message won't be printed again\n");
1495 pp->ncq_saw_d2h = 1;
1499 if (status & PORT_IRQ_DMAS_FIS) {
1500 if (!pp->ncq_saw_dmas)
1501 ata_port_printk(ap, KERN_INFO,
1502 "DMAS FIS during NCQ, "
1503 "this message won't be printed again\n");
1504 pp->ncq_saw_dmas = 1;
1508 if (status & PORT_IRQ_SDB_FIS) {
1509 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1511 if (le32_to_cpu(f[1])) {
1512 /* SDB FIS containing spurious completions
1513 * might be dangerous, whine and fail commands
1514 * with HSM violation. EH will turn off NCQ
1515 * after several such failures.
1517 ata_ehi_push_desc(ehi,
1518 "spurious completions during NCQ "
1519 "issue=0x%x SAct=0x%x FIS=%08x:%08x",
1520 readl(port_mmio + PORT_CMD_ISSUE),
1521 readl(port_mmio + PORT_SCR_ACT),
1522 le32_to_cpu(f[0]), le32_to_cpu(f[1]));
1523 ehi->err_mask |= AC_ERR_HSM;
1524 ehi->action |= ATA_EH_SOFTRESET;
1525 ata_port_freeze(ap);
1527 if (!pp->ncq_saw_sdb)
1528 ata_port_printk(ap, KERN_INFO,
1529 "spurious SDB FIS %08x:%08x during NCQ, "
1530 "this message won't be printed again\n",
1531 le32_to_cpu(f[0]), le32_to_cpu(f[1]));
1532 pp->ncq_saw_sdb = 1;
1538 ata_port_printk(ap, KERN_INFO, "spurious interrupt "
1539 "(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n",
1540 status, ap->link.active_tag, ap->link.sactive);
1543 static void ahci_irq_clear(struct ata_port *ap)
1548 static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
1550 struct ata_host *host = dev_instance;
1551 struct ahci_host_priv *hpriv;
1552 unsigned int i, handled = 0;
1554 u32 irq_stat, irq_ack = 0;
1558 hpriv = host->private_data;
1559 mmio = host->iomap[AHCI_PCI_BAR];
1561 /* sigh. 0xffffffff is a valid return from h/w */
1562 irq_stat = readl(mmio + HOST_IRQ_STAT);
1563 irq_stat &= hpriv->port_map;
1567 spin_lock(&host->lock);
1569 for (i = 0; i < host->n_ports; i++) {
1570 struct ata_port *ap;
1572 if (!(irq_stat & (1 << i)))
1575 ap = host->ports[i];
1578 VPRINTK("port %u\n", i);
1580 VPRINTK("port %u (no irq)\n", i);
1581 if (ata_ratelimit())
1582 dev_printk(KERN_WARNING, host->dev,
1583 "interrupt on disabled port %u\n", i);
1586 irq_ack |= (1 << i);
1590 writel(irq_ack, mmio + HOST_IRQ_STAT);
1594 spin_unlock(&host->lock);
1598 return IRQ_RETVAL(handled);
1601 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
1603 struct ata_port *ap = qc->ap;
1604 void __iomem *port_mmio = ahci_port_base(ap);
1605 struct ahci_port_priv *pp = ap->private_data;
1607 /* Keep track of the currently active link. It will be used
1608 * in completion path to determine whether NCQ phase is in
1611 pp->active_link = qc->dev->link;
1613 if (qc->tf.protocol == ATA_PROT_NCQ)
1614 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
1615 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
1616 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1621 static void ahci_freeze(struct ata_port *ap)
1623 void __iomem *port_mmio = ahci_port_base(ap);
1626 writel(0, port_mmio + PORT_IRQ_MASK);
1629 static void ahci_thaw(struct ata_port *ap)
1631 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
1632 void __iomem *port_mmio = ahci_port_base(ap);
1634 struct ahci_port_priv *pp = ap->private_data;
1637 tmp = readl(port_mmio + PORT_IRQ_STAT);
1638 writel(tmp, port_mmio + PORT_IRQ_STAT);
1639 writel(1 << ap->port_no, mmio + HOST_IRQ_STAT);
1641 /* turn IRQ back on */
1642 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1645 static void ahci_error_handler(struct ata_port *ap)
1647 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1648 /* restart engine */
1649 ahci_stop_engine(ap);
1650 ahci_start_engine(ap);
1653 /* perform recovery */
1654 sata_pmp_do_eh(ap, ata_std_prereset, ahci_softreset,
1655 ahci_hardreset, ahci_postreset,
1656 sata_pmp_std_prereset, ahci_pmp_softreset,
1657 sata_pmp_std_hardreset, sata_pmp_std_postreset);
1660 static void ahci_vt8251_error_handler(struct ata_port *ap)
1662 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1663 /* restart engine */
1664 ahci_stop_engine(ap);
1665 ahci_start_engine(ap);
1668 /* perform recovery */
1669 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_vt8251_hardreset,
1673 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
1675 struct ata_port *ap = qc->ap;
1677 /* make DMA engine forget about the failed command */
1678 if (qc->flags & ATA_QCFLAG_FAILED)
1679 ahci_kick_engine(ap, 1);
1682 static void ahci_pmp_attach(struct ata_port *ap)
1684 void __iomem *port_mmio = ahci_port_base(ap);
1685 struct ahci_port_priv *pp = ap->private_data;
1688 cmd = readl(port_mmio + PORT_CMD);
1689 cmd |= PORT_CMD_PMP;
1690 writel(cmd, port_mmio + PORT_CMD);
1692 pp->intr_mask |= PORT_IRQ_BAD_PMP;
1693 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1696 static void ahci_pmp_detach(struct ata_port *ap)
1698 void __iomem *port_mmio = ahci_port_base(ap);
1699 struct ahci_port_priv *pp = ap->private_data;
1702 cmd = readl(port_mmio + PORT_CMD);
1703 cmd &= ~PORT_CMD_PMP;
1704 writel(cmd, port_mmio + PORT_CMD);
1706 pp->intr_mask &= ~PORT_IRQ_BAD_PMP;
1707 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1710 static int ahci_port_resume(struct ata_port *ap)
1713 ahci_start_port(ap);
1715 if (ap->nr_pmp_links)
1716 ahci_pmp_attach(ap);
1718 ahci_pmp_detach(ap);
1724 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
1726 const char *emsg = NULL;
1729 rc = ahci_deinit_port(ap, &emsg);
1731 ahci_power_down(ap);
1733 ata_port_printk(ap, KERN_ERR, "%s (%d)\n", emsg, rc);
1734 ahci_start_port(ap);
1740 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1742 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1743 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1746 if (mesg.event == PM_EVENT_SUSPEND) {
1747 /* AHCI spec rev1.1 section 8.3.3:
1748 * Software must disable interrupts prior to requesting a
1749 * transition of the HBA to D3 state.
1751 ctl = readl(mmio + HOST_CTL);
1752 ctl &= ~HOST_IRQ_EN;
1753 writel(ctl, mmio + HOST_CTL);
1754 readl(mmio + HOST_CTL); /* flush */
1757 return ata_pci_device_suspend(pdev, mesg);
1760 static int ahci_pci_device_resume(struct pci_dev *pdev)
1762 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1765 rc = ata_pci_device_do_resume(pdev);
1769 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
1770 rc = ahci_reset_controller(host);
1774 ahci_init_controller(host);
1777 ata_host_resume(host);
1783 static int ahci_port_start(struct ata_port *ap)
1785 struct device *dev = ap->host->dev;
1786 struct ahci_port_priv *pp;
1791 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1795 rc = ata_pad_alloc(ap, dev);
1799 mem = dmam_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma,
1803 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
1806 * First item in chunk of DMA memory: 32-slot command table,
1807 * 32 bytes each in size
1810 pp->cmd_slot_dma = mem_dma;
1812 mem += AHCI_CMD_SLOT_SZ;
1813 mem_dma += AHCI_CMD_SLOT_SZ;
1816 * Second item: Received-FIS area
1819 pp->rx_fis_dma = mem_dma;
1821 mem += AHCI_RX_FIS_SZ;
1822 mem_dma += AHCI_RX_FIS_SZ;
1825 * Third item: data area for storing a single command
1826 * and its scatter-gather table
1829 pp->cmd_tbl_dma = mem_dma;
1832 * Save off initial list of interrupts to be enabled.
1833 * This could be changed later
1835 pp->intr_mask = DEF_PORT_IRQ;
1837 ap->private_data = pp;
1839 /* engage engines, captain */
1840 return ahci_port_resume(ap);
1843 static void ahci_port_stop(struct ata_port *ap)
1845 const char *emsg = NULL;
1848 /* de-initialize port */
1849 rc = ahci_deinit_port(ap, &emsg);
1851 ata_port_printk(ap, KERN_WARNING, "%s (%d)\n", emsg, rc);
1854 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
1859 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1860 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
1862 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1864 dev_printk(KERN_ERR, &pdev->dev,
1865 "64-bit DMA enable failed\n");
1870 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1872 dev_printk(KERN_ERR, &pdev->dev,
1873 "32-bit DMA enable failed\n");
1876 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1878 dev_printk(KERN_ERR, &pdev->dev,
1879 "32-bit consistent DMA enable failed\n");
1886 static void ahci_print_info(struct ata_host *host)
1888 struct ahci_host_priv *hpriv = host->private_data;
1889 struct pci_dev *pdev = to_pci_dev(host->dev);
1890 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1891 u32 vers, cap, impl, speed;
1892 const char *speed_s;
1896 vers = readl(mmio + HOST_VERSION);
1898 impl = hpriv->port_map;
1900 speed = (cap >> 20) & 0xf;
1903 else if (speed == 2)
1908 pci_read_config_word(pdev, 0x0a, &cc);
1909 if (cc == PCI_CLASS_STORAGE_IDE)
1911 else if (cc == PCI_CLASS_STORAGE_SATA)
1913 else if (cc == PCI_CLASS_STORAGE_RAID)
1918 dev_printk(KERN_INFO, &pdev->dev,
1919 "AHCI %02x%02x.%02x%02x "
1920 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
1923 (vers >> 24) & 0xff,
1924 (vers >> 16) & 0xff,
1928 ((cap >> 8) & 0x1f) + 1,
1934 dev_printk(KERN_INFO, &pdev->dev,
1940 cap & (1 << 31) ? "64bit " : "",
1941 cap & (1 << 30) ? "ncq " : "",
1942 cap & (1 << 29) ? "sntf " : "",
1943 cap & (1 << 28) ? "ilck " : "",
1944 cap & (1 << 27) ? "stag " : "",
1945 cap & (1 << 26) ? "pm " : "",
1946 cap & (1 << 25) ? "led " : "",
1948 cap & (1 << 24) ? "clo " : "",
1949 cap & (1 << 19) ? "nz " : "",
1950 cap & (1 << 18) ? "only " : "",
1951 cap & (1 << 17) ? "pmp " : "",
1952 cap & (1 << 15) ? "pio " : "",
1953 cap & (1 << 14) ? "slum " : "",
1954 cap & (1 << 13) ? "part " : ""
1958 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1960 static int printed_version;
1961 struct ata_port_info pi = ahci_port_info[ent->driver_data];
1962 const struct ata_port_info *ppi[] = { &pi, NULL };
1963 struct device *dev = &pdev->dev;
1964 struct ahci_host_priv *hpriv;
1965 struct ata_host *host;
1970 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
1972 if (!printed_version++)
1973 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1975 /* acquire resources */
1976 rc = pcim_enable_device(pdev);
1980 rc = pcim_iomap_regions(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
1982 pcim_pin_device(pdev);
1986 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1989 hpriv->flags |= (unsigned long)pi.private_data;
1991 if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))
1994 /* save initial config */
1995 ahci_save_initial_config(pdev, hpriv);
1998 if (hpriv->cap & HOST_CAP_NCQ)
1999 pi.flags |= ATA_FLAG_NCQ;
2001 if (hpriv->cap & HOST_CAP_PMP)
2002 pi.flags |= ATA_FLAG_PMP;
2004 host = ata_host_alloc_pinfo(&pdev->dev, ppi, fls(hpriv->port_map));
2007 host->iomap = pcim_iomap_table(pdev);
2008 host->private_data = hpriv;
2010 for (i = 0; i < host->n_ports; i++) {
2011 struct ata_port *ap = host->ports[i];
2012 void __iomem *port_mmio = ahci_port_base(ap);
2014 ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");
2015 ata_port_pbar_desc(ap, AHCI_PCI_BAR,
2016 0x100 + ap->port_no * 0x80, "port");
2018 /* standard SATA port setup */
2019 if (hpriv->port_map & (1 << i))
2020 ap->ioaddr.cmd_addr = port_mmio;
2022 /* disabled/not-implemented port */
2024 ap->ops = &ata_dummy_port_ops;
2027 /* initialize adapter */
2028 rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
2032 rc = ahci_reset_controller(host);
2036 ahci_init_controller(host);
2037 ahci_print_info(host);
2039 pci_set_master(pdev);
2040 return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
2044 static int __init ahci_init(void)
2046 return pci_register_driver(&ahci_pci_driver);
2049 static void __exit ahci_exit(void)
2051 pci_unregister_driver(&ahci_pci_driver);
2055 MODULE_AUTHOR("Jeff Garzik");
2056 MODULE_DESCRIPTION("AHCI SATA low-level driver");
2057 MODULE_LICENSE("GPL");
2058 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
2059 MODULE_VERSION(DRV_VERSION);
2061 module_init(ahci_init);
2062 module_exit(ahci_exit);