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 int ahci_pmp_read(struct ata_device *dev, int pmp, int reg, u32 *r_val);
243 static int ahci_pmp_write(struct ata_device *dev, int pmp, int reg, u32 val);
244 static void ahci_error_handler(struct ata_port *ap);
245 static void ahci_vt8251_error_handler(struct ata_port *ap);
246 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
247 static int ahci_port_resume(struct ata_port *ap);
248 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl);
249 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
252 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg);
253 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
254 static int ahci_pci_device_resume(struct pci_dev *pdev);
257 static struct scsi_host_template ahci_sht = {
258 .module = THIS_MODULE,
260 .ioctl = ata_scsi_ioctl,
261 .queuecommand = ata_scsi_queuecmd,
262 .change_queue_depth = ata_scsi_change_queue_depth,
263 .can_queue = AHCI_MAX_CMDS - 1,
264 .this_id = ATA_SHT_THIS_ID,
265 .sg_tablesize = AHCI_MAX_SG,
266 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
267 .emulated = ATA_SHT_EMULATED,
268 .use_clustering = AHCI_USE_CLUSTERING,
269 .proc_name = DRV_NAME,
270 .dma_boundary = AHCI_DMA_BOUNDARY,
271 .slave_configure = ata_scsi_slave_config,
272 .slave_destroy = ata_scsi_slave_destroy,
273 .bios_param = ata_std_bios_param,
276 static const struct ata_port_operations ahci_ops = {
277 .check_status = ahci_check_status,
278 .check_altstatus = ahci_check_status,
279 .dev_select = ata_noop_dev_select,
281 .tf_read = ahci_tf_read,
283 .qc_defer = sata_pmp_qc_defer_cmd_switch,
284 .qc_prep = ahci_qc_prep,
285 .qc_issue = ahci_qc_issue,
287 .irq_clear = ahci_irq_clear,
289 .scr_read = ahci_scr_read,
290 .scr_write = ahci_scr_write,
292 .freeze = ahci_freeze,
295 .error_handler = ahci_error_handler,
296 .post_internal_cmd = ahci_post_internal_cmd,
298 .pmp_attach = ahci_pmp_attach,
299 .pmp_detach = ahci_pmp_detach,
300 .pmp_read = ahci_pmp_read,
301 .pmp_write = ahci_pmp_write,
304 .port_suspend = ahci_port_suspend,
305 .port_resume = ahci_port_resume,
308 .port_start = ahci_port_start,
309 .port_stop = ahci_port_stop,
312 static const struct ata_port_operations ahci_vt8251_ops = {
313 .check_status = ahci_check_status,
314 .check_altstatus = ahci_check_status,
315 .dev_select = ata_noop_dev_select,
317 .tf_read = ahci_tf_read,
319 .qc_defer = sata_pmp_qc_defer_cmd_switch,
320 .qc_prep = ahci_qc_prep,
321 .qc_issue = ahci_qc_issue,
323 .irq_clear = ahci_irq_clear,
325 .scr_read = ahci_scr_read,
326 .scr_write = ahci_scr_write,
328 .freeze = ahci_freeze,
331 .error_handler = ahci_vt8251_error_handler,
332 .post_internal_cmd = ahci_post_internal_cmd,
334 .pmp_attach = ahci_pmp_attach,
335 .pmp_detach = ahci_pmp_detach,
336 .pmp_read = ahci_pmp_read,
337 .pmp_write = ahci_pmp_write,
340 .port_suspend = ahci_port_suspend,
341 .port_resume = ahci_port_resume,
344 .port_start = ahci_port_start,
345 .port_stop = ahci_port_stop,
348 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
350 static const struct ata_port_info ahci_port_info[] = {
353 .flags = AHCI_FLAG_COMMON,
354 .link_flags = AHCI_LFLAG_COMMON,
355 .pio_mask = 0x1f, /* pio0-4 */
356 .udma_mask = ATA_UDMA6,
357 .port_ops = &ahci_ops,
359 /* board_ahci_vt8251 */
361 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
362 .flags = AHCI_FLAG_COMMON,
363 .link_flags = AHCI_LFLAG_COMMON | ATA_LFLAG_HRST_TO_RESUME,
364 .pio_mask = 0x1f, /* pio0-4 */
365 .udma_mask = ATA_UDMA6,
366 .port_ops = &ahci_vt8251_ops,
368 /* board_ahci_ign_iferr */
370 AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR),
371 .flags = AHCI_FLAG_COMMON,
372 .link_flags = AHCI_LFLAG_COMMON,
373 .pio_mask = 0x1f, /* pio0-4 */
374 .udma_mask = ATA_UDMA6,
375 .port_ops = &ahci_ops,
377 /* board_ahci_sb600 */
379 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
380 AHCI_HFLAG_32BIT_ONLY | AHCI_HFLAG_NO_PMP),
381 .flags = AHCI_FLAG_COMMON,
382 .link_flags = AHCI_LFLAG_COMMON,
383 .pio_mask = 0x1f, /* pio0-4 */
384 .udma_mask = ATA_UDMA6,
385 .port_ops = &ahci_ops,
389 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
391 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
392 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
393 .link_flags = AHCI_LFLAG_COMMON,
394 .pio_mask = 0x1f, /* pio0-4 */
395 .udma_mask = ATA_UDMA6,
396 .port_ops = &ahci_ops,
400 static const struct pci_device_id ahci_pci_tbl[] = {
402 { PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
403 { PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
404 { PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
405 { PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
406 { PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
407 { PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
408 { PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
409 { PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
410 { PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
411 { PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
412 { PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
413 { PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* ICH8 */
414 { PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
415 { PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
416 { PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
417 { PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
418 { PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
419 { PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
420 { PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
421 { PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
422 { PCI_VDEVICE(INTEL, 0x2929), board_ahci }, /* ICH9M */
423 { PCI_VDEVICE(INTEL, 0x292a), board_ahci }, /* ICH9M */
424 { PCI_VDEVICE(INTEL, 0x292b), board_ahci }, /* ICH9M */
425 { PCI_VDEVICE(INTEL, 0x292c), board_ahci }, /* ICH9M */
426 { PCI_VDEVICE(INTEL, 0x292f), board_ahci }, /* ICH9M */
427 { PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
428 { PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */
429 { PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
430 { PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
432 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
433 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
434 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
437 { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
438 { PCI_VDEVICE(ATI, 0x4390), board_ahci_sb600 }, /* ATI SB700/800 */
439 { PCI_VDEVICE(ATI, 0x4391), board_ahci_sb600 }, /* ATI SB700/800 */
440 { PCI_VDEVICE(ATI, 0x4392), board_ahci_sb600 }, /* ATI SB700/800 */
441 { PCI_VDEVICE(ATI, 0x4393), board_ahci_sb600 }, /* ATI SB700/800 */
442 { PCI_VDEVICE(ATI, 0x4394), board_ahci_sb600 }, /* ATI SB700/800 */
443 { PCI_VDEVICE(ATI, 0x4395), board_ahci_sb600 }, /* ATI SB700/800 */
446 { PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
447 { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
450 { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci }, /* MCP65 */
451 { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci }, /* MCP65 */
452 { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci }, /* MCP65 */
453 { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci }, /* MCP65 */
454 { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci }, /* MCP65 */
455 { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci }, /* MCP65 */
456 { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci }, /* MCP65 */
457 { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci }, /* MCP65 */
458 { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci }, /* MCP67 */
459 { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci }, /* MCP67 */
460 { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci }, /* MCP67 */
461 { PCI_VDEVICE(NVIDIA, 0x0553), board_ahci }, /* MCP67 */
462 { PCI_VDEVICE(NVIDIA, 0x0554), board_ahci }, /* MCP67 */
463 { PCI_VDEVICE(NVIDIA, 0x0555), board_ahci }, /* MCP67 */
464 { PCI_VDEVICE(NVIDIA, 0x0556), board_ahci }, /* MCP67 */
465 { PCI_VDEVICE(NVIDIA, 0x0557), board_ahci }, /* MCP67 */
466 { PCI_VDEVICE(NVIDIA, 0x0558), board_ahci }, /* MCP67 */
467 { PCI_VDEVICE(NVIDIA, 0x0559), board_ahci }, /* MCP67 */
468 { PCI_VDEVICE(NVIDIA, 0x055a), board_ahci }, /* MCP67 */
469 { PCI_VDEVICE(NVIDIA, 0x055b), board_ahci }, /* MCP67 */
470 { PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci }, /* MCP73 */
471 { PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci }, /* MCP73 */
472 { PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci }, /* MCP73 */
473 { PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci }, /* MCP73 */
474 { PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci }, /* MCP73 */
475 { PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci }, /* MCP73 */
476 { PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci }, /* MCP73 */
477 { PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci }, /* MCP73 */
478 { PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci }, /* MCP73 */
479 { PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci }, /* MCP73 */
480 { PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci }, /* MCP73 */
481 { PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci }, /* MCP73 */
482 { PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci }, /* MCP77 */
483 { PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci }, /* MCP77 */
484 { PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci }, /* MCP77 */
485 { PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci }, /* MCP77 */
486 { PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci }, /* MCP77 */
487 { PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci }, /* MCP77 */
488 { PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci }, /* MCP77 */
489 { PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci }, /* MCP77 */
490 { PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci }, /* MCP77 */
491 { PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci }, /* MCP77 */
492 { PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci }, /* MCP77 */
493 { PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci }, /* MCP77 */
496 { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
497 { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 966 */
498 { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
501 { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
503 /* Generic, PCI class code for AHCI */
504 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
505 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
507 { } /* terminate list */
511 static struct pci_driver ahci_pci_driver = {
513 .id_table = ahci_pci_tbl,
514 .probe = ahci_init_one,
515 .remove = ata_pci_remove_one,
517 .suspend = ahci_pci_device_suspend,
518 .resume = ahci_pci_device_resume,
523 static inline int ahci_nr_ports(u32 cap)
525 return (cap & 0x1f) + 1;
528 static inline void __iomem *__ahci_port_base(struct ata_host *host,
529 unsigned int port_no)
531 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
533 return mmio + 0x100 + (port_no * 0x80);
536 static inline void __iomem *ahci_port_base(struct ata_port *ap)
538 return __ahci_port_base(ap->host, ap->port_no);
542 * ahci_save_initial_config - Save and fixup initial config values
543 * @pdev: target PCI device
544 * @hpriv: host private area to store config values
546 * Some registers containing configuration info might be setup by
547 * BIOS and might be cleared on reset. This function saves the
548 * initial values of those registers into @hpriv such that they
549 * can be restored after controller reset.
551 * If inconsistent, config values are fixed up by this function.
556 static void ahci_save_initial_config(struct pci_dev *pdev,
557 struct ahci_host_priv *hpriv)
559 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
563 /* Values prefixed with saved_ are written back to host after
564 * reset. Values without are used for driver operation.
566 hpriv->saved_cap = cap = readl(mmio + HOST_CAP);
567 hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
569 /* some chips have errata preventing 64bit use */
570 if ((cap & HOST_CAP_64) && (hpriv->flags & AHCI_HFLAG_32BIT_ONLY)) {
571 dev_printk(KERN_INFO, &pdev->dev,
572 "controller can't do 64bit DMA, forcing 32bit\n");
576 if ((cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_NO_NCQ)) {
577 dev_printk(KERN_INFO, &pdev->dev,
578 "controller can't do NCQ, turning off CAP_NCQ\n");
579 cap &= ~HOST_CAP_NCQ;
582 if ((cap && HOST_CAP_PMP) && (hpriv->flags & AHCI_HFLAG_NO_PMP)) {
583 dev_printk(KERN_INFO, &pdev->dev,
584 "controller can't do PMP, turning off CAP_PMP\n");
585 cap &= ~HOST_CAP_PMP;
589 * Temporary Marvell 6145 hack: PATA port presence
590 * is asserted through the standard AHCI port
591 * presence register, as bit 4 (counting from 0)
593 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
594 dev_printk(KERN_ERR, &pdev->dev,
595 "MV_AHCI HACK: port_map %x -> %x\n",
597 hpriv->port_map & 0xf);
602 /* cross check port_map and cap.n_ports */
604 u32 tmp_port_map = port_map;
605 int n_ports = ahci_nr_ports(cap);
607 for (i = 0; i < AHCI_MAX_PORTS && n_ports; i++) {
608 if (tmp_port_map & (1 << i)) {
610 tmp_port_map &= ~(1 << i);
614 /* If n_ports and port_map are inconsistent, whine and
615 * clear port_map and let it be generated from n_ports.
617 if (n_ports || tmp_port_map) {
618 dev_printk(KERN_WARNING, &pdev->dev,
619 "nr_ports (%u) and implemented port map "
620 "(0x%x) don't match, using nr_ports\n",
621 ahci_nr_ports(cap), port_map);
626 /* fabricate port_map from cap.nr_ports */
628 port_map = (1 << ahci_nr_ports(cap)) - 1;
629 dev_printk(KERN_WARNING, &pdev->dev,
630 "forcing PORTS_IMPL to 0x%x\n", port_map);
632 /* write the fixed up value to the PI register */
633 hpriv->saved_port_map = port_map;
636 /* record values to use during operation */
638 hpriv->port_map = port_map;
642 * ahci_restore_initial_config - Restore initial config
643 * @host: target ATA host
645 * Restore initial config stored by ahci_save_initial_config().
650 static void ahci_restore_initial_config(struct ata_host *host)
652 struct ahci_host_priv *hpriv = host->private_data;
653 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
655 writel(hpriv->saved_cap, mmio + HOST_CAP);
656 writel(hpriv->saved_port_map, mmio + HOST_PORTS_IMPL);
657 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
660 static unsigned ahci_scr_offset(struct ata_port *ap, unsigned int sc_reg)
662 static const int offset[] = {
663 [SCR_STATUS] = PORT_SCR_STAT,
664 [SCR_CONTROL] = PORT_SCR_CTL,
665 [SCR_ERROR] = PORT_SCR_ERR,
666 [SCR_ACTIVE] = PORT_SCR_ACT,
667 [SCR_NOTIFICATION] = PORT_SCR_NTF,
669 struct ahci_host_priv *hpriv = ap->host->private_data;
671 if (sc_reg < ARRAY_SIZE(offset) &&
672 (sc_reg != SCR_NOTIFICATION || (hpriv->cap & HOST_CAP_SNTF)))
673 return offset[sc_reg];
677 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
679 void __iomem *port_mmio = ahci_port_base(ap);
680 int offset = ahci_scr_offset(ap, sc_reg);
683 *val = readl(port_mmio + offset);
689 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
691 void __iomem *port_mmio = ahci_port_base(ap);
692 int offset = ahci_scr_offset(ap, sc_reg);
695 writel(val, port_mmio + offset);
701 static void ahci_start_engine(struct ata_port *ap)
703 void __iomem *port_mmio = ahci_port_base(ap);
707 tmp = readl(port_mmio + PORT_CMD);
708 tmp |= PORT_CMD_START;
709 writel(tmp, port_mmio + PORT_CMD);
710 readl(port_mmio + PORT_CMD); /* flush */
713 static int ahci_stop_engine(struct ata_port *ap)
715 void __iomem *port_mmio = ahci_port_base(ap);
718 tmp = readl(port_mmio + PORT_CMD);
720 /* check if the HBA is idle */
721 if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
724 /* setting HBA to idle */
725 tmp &= ~PORT_CMD_START;
726 writel(tmp, port_mmio + PORT_CMD);
728 /* wait for engine to stop. This could be as long as 500 msec */
729 tmp = ata_wait_register(port_mmio + PORT_CMD,
730 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
731 if (tmp & PORT_CMD_LIST_ON)
737 static void ahci_start_fis_rx(struct ata_port *ap)
739 void __iomem *port_mmio = ahci_port_base(ap);
740 struct ahci_host_priv *hpriv = ap->host->private_data;
741 struct ahci_port_priv *pp = ap->private_data;
744 /* set FIS registers */
745 if (hpriv->cap & HOST_CAP_64)
746 writel((pp->cmd_slot_dma >> 16) >> 16,
747 port_mmio + PORT_LST_ADDR_HI);
748 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
750 if (hpriv->cap & HOST_CAP_64)
751 writel((pp->rx_fis_dma >> 16) >> 16,
752 port_mmio + PORT_FIS_ADDR_HI);
753 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
755 /* enable FIS reception */
756 tmp = readl(port_mmio + PORT_CMD);
757 tmp |= PORT_CMD_FIS_RX;
758 writel(tmp, port_mmio + PORT_CMD);
761 readl(port_mmio + PORT_CMD);
764 static int ahci_stop_fis_rx(struct ata_port *ap)
766 void __iomem *port_mmio = ahci_port_base(ap);
769 /* disable FIS reception */
770 tmp = readl(port_mmio + PORT_CMD);
771 tmp &= ~PORT_CMD_FIS_RX;
772 writel(tmp, port_mmio + PORT_CMD);
774 /* wait for completion, spec says 500ms, give it 1000 */
775 tmp = ata_wait_register(port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
776 PORT_CMD_FIS_ON, 10, 1000);
777 if (tmp & PORT_CMD_FIS_ON)
783 static void ahci_power_up(struct ata_port *ap)
785 struct ahci_host_priv *hpriv = ap->host->private_data;
786 void __iomem *port_mmio = ahci_port_base(ap);
789 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
792 if (hpriv->cap & HOST_CAP_SSS) {
793 cmd |= PORT_CMD_SPIN_UP;
794 writel(cmd, port_mmio + PORT_CMD);
798 writel(cmd | PORT_CMD_ICC_ACTIVE, port_mmio + PORT_CMD);
802 static void ahci_power_down(struct ata_port *ap)
804 struct ahci_host_priv *hpriv = ap->host->private_data;
805 void __iomem *port_mmio = ahci_port_base(ap);
808 if (!(hpriv->cap & HOST_CAP_SSS))
811 /* put device into listen mode, first set PxSCTL.DET to 0 */
812 scontrol = readl(port_mmio + PORT_SCR_CTL);
814 writel(scontrol, port_mmio + PORT_SCR_CTL);
816 /* then set PxCMD.SUD to 0 */
817 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
818 cmd &= ~PORT_CMD_SPIN_UP;
819 writel(cmd, port_mmio + PORT_CMD);
823 static void ahci_start_port(struct ata_port *ap)
825 /* enable FIS reception */
826 ahci_start_fis_rx(ap);
829 ahci_start_engine(ap);
832 static int ahci_deinit_port(struct ata_port *ap, const char **emsg)
837 rc = ahci_stop_engine(ap);
839 *emsg = "failed to stop engine";
843 /* disable FIS reception */
844 rc = ahci_stop_fis_rx(ap);
846 *emsg = "failed stop FIS RX";
853 static int ahci_reset_controller(struct ata_host *host)
855 struct pci_dev *pdev = to_pci_dev(host->dev);
856 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
859 /* we must be in AHCI mode, before using anything
860 * AHCI-specific, such as HOST_RESET.
862 tmp = readl(mmio + HOST_CTL);
863 if (!(tmp & HOST_AHCI_EN))
864 writel(tmp | HOST_AHCI_EN, mmio + HOST_CTL);
866 /* global controller reset */
867 if ((tmp & HOST_RESET) == 0) {
868 writel(tmp | HOST_RESET, mmio + HOST_CTL);
869 readl(mmio + HOST_CTL); /* flush */
872 /* reset must complete within 1 second, or
873 * the hardware should be considered fried.
877 tmp = readl(mmio + HOST_CTL);
878 if (tmp & HOST_RESET) {
879 dev_printk(KERN_ERR, host->dev,
880 "controller reset failed (0x%x)\n", tmp);
884 /* turn on AHCI mode */
885 writel(HOST_AHCI_EN, mmio + HOST_CTL);
886 (void) readl(mmio + HOST_CTL); /* flush */
888 /* some registers might be cleared on reset. restore initial values */
889 ahci_restore_initial_config(host);
891 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
895 pci_read_config_word(pdev, 0x92, &tmp16);
897 pci_write_config_word(pdev, 0x92, tmp16);
903 static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap,
904 int port_no, void __iomem *mmio,
905 void __iomem *port_mmio)
907 const char *emsg = NULL;
911 /* make sure port is not active */
912 rc = ahci_deinit_port(ap, &emsg);
914 dev_printk(KERN_WARNING, &pdev->dev,
915 "%s (%d)\n", emsg, rc);
918 tmp = readl(port_mmio + PORT_SCR_ERR);
919 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
920 writel(tmp, port_mmio + PORT_SCR_ERR);
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);
928 writel(1 << port_no, mmio + HOST_IRQ_STAT);
931 static void ahci_init_controller(struct ata_host *host)
933 struct ahci_host_priv *hpriv = host->private_data;
934 struct pci_dev *pdev = to_pci_dev(host->dev);
935 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
937 void __iomem *port_mmio;
940 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
941 port_mmio = __ahci_port_base(host, 4);
943 writel(0, port_mmio + PORT_IRQ_MASK);
946 tmp = readl(port_mmio + PORT_IRQ_STAT);
947 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
949 writel(tmp, port_mmio + PORT_IRQ_STAT);
952 for (i = 0; i < host->n_ports; i++) {
953 struct ata_port *ap = host->ports[i];
955 port_mmio = ahci_port_base(ap);
956 if (ata_port_is_dummy(ap))
959 ahci_port_init(pdev, ap, i, mmio, port_mmio);
962 tmp = readl(mmio + HOST_CTL);
963 VPRINTK("HOST_CTL 0x%x\n", tmp);
964 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
965 tmp = readl(mmio + HOST_CTL);
966 VPRINTK("HOST_CTL 0x%x\n", tmp);
969 static unsigned int ahci_dev_classify(struct ata_port *ap)
971 void __iomem *port_mmio = ahci_port_base(ap);
972 struct ata_taskfile tf;
975 tmp = readl(port_mmio + PORT_SIG);
976 tf.lbah = (tmp >> 24) & 0xff;
977 tf.lbam = (tmp >> 16) & 0xff;
978 tf.lbal = (tmp >> 8) & 0xff;
979 tf.nsect = (tmp) & 0xff;
981 return ata_dev_classify(&tf);
984 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
987 dma_addr_t cmd_tbl_dma;
989 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
991 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
992 pp->cmd_slot[tag].status = 0;
993 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
994 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
997 static int ahci_kick_engine(struct ata_port *ap, int force_restart)
999 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1000 struct ahci_host_priv *hpriv = ap->host->private_data;
1004 /* do we need to kick the port? */
1005 busy = ahci_check_status(ap) & (ATA_BUSY | ATA_DRQ);
1006 if (!busy && !force_restart)
1010 rc = ahci_stop_engine(ap);
1014 /* need to do CLO? */
1020 if (!(hpriv->cap & HOST_CAP_CLO)) {
1026 tmp = readl(port_mmio + PORT_CMD);
1027 tmp |= PORT_CMD_CLO;
1028 writel(tmp, port_mmio + PORT_CMD);
1031 tmp = ata_wait_register(port_mmio + PORT_CMD,
1032 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
1033 if (tmp & PORT_CMD_CLO)
1036 /* restart engine */
1038 ahci_start_engine(ap);
1042 static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
1043 struct ata_taskfile *tf, int is_cmd, u16 flags,
1044 unsigned long timeout_msec)
1046 const u32 cmd_fis_len = 5; /* five dwords */
1047 struct ahci_port_priv *pp = ap->private_data;
1048 void __iomem *port_mmio = ahci_port_base(ap);
1049 u8 *fis = pp->cmd_tbl;
1052 /* prep the command */
1053 ata_tf_to_fis(tf, pmp, is_cmd, fis);
1054 ahci_fill_cmd_slot(pp, 0, cmd_fis_len | flags | (pmp << 12));
1057 writel(1, port_mmio + PORT_CMD_ISSUE);
1060 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1,
1063 ahci_kick_engine(ap, 1);
1067 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1072 static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
1073 int pmp, unsigned long deadline)
1075 struct ata_port *ap = link->ap;
1076 const char *reason = NULL;
1077 unsigned long now, msecs;
1078 struct ata_taskfile tf;
1083 if (ata_link_offline(link)) {
1084 DPRINTK("PHY reports no device\n");
1085 *class = ATA_DEV_NONE;
1089 /* prepare for SRST (AHCI-1.1 10.4.1) */
1090 rc = ahci_kick_engine(ap, 1);
1092 ata_link_printk(link, KERN_WARNING,
1093 "failed to reset engine (errno=%d)", rc);
1095 ata_tf_init(link->device, &tf);
1097 /* issue the first D2H Register FIS */
1100 if (time_after(now, deadline))
1101 msecs = jiffies_to_msecs(deadline - now);
1104 if (ahci_exec_polled_cmd(ap, pmp, &tf, 0,
1105 AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY, msecs)) {
1107 reason = "1st FIS failed";
1111 /* spec says at least 5us, but be generous and sleep for 1ms */
1114 /* issue the second D2H Register FIS */
1115 tf.ctl &= ~ATA_SRST;
1116 ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
1118 /* spec mandates ">= 2ms" before checking status.
1119 * We wait 150ms, because that was the magic delay used for
1120 * ATAPI devices in Hale Landis's ATADRVR, for the period of time
1121 * between when the ATA command register is written, and then
1122 * status is checked. Because waiting for "a while" before
1123 * checking status is fine, post SRST, we perform this magic
1124 * delay here as well.
1128 rc = ata_wait_ready(ap, deadline);
1129 /* link occupied, -ENODEV too is an error */
1131 reason = "device not ready";
1134 *class = ahci_dev_classify(ap);
1136 DPRINTK("EXIT, class=%u\n", *class);
1140 ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
1144 static int ahci_softreset(struct ata_link *link, unsigned int *class,
1145 unsigned long deadline)
1149 if (link->ap->flags & ATA_FLAG_PMP)
1150 pmp = SATA_PMP_CTRL_PORT;
1152 return ahci_do_softreset(link, class, pmp, deadline);
1155 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
1156 unsigned long deadline)
1158 struct ata_port *ap = link->ap;
1159 struct ahci_port_priv *pp = ap->private_data;
1160 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1161 struct ata_taskfile tf;
1166 ahci_stop_engine(ap);
1168 /* clear D2H reception area to properly wait for D2H FIS */
1169 ata_tf_init(link->device, &tf);
1171 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1173 rc = sata_std_hardreset(link, class, deadline);
1175 ahci_start_engine(ap);
1177 if (rc == 0 && ata_link_online(link))
1178 *class = ahci_dev_classify(ap);
1179 if (rc != -EAGAIN && *class == ATA_DEV_UNKNOWN)
1180 *class = ATA_DEV_NONE;
1182 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1186 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
1187 unsigned long deadline)
1189 struct ata_port *ap = link->ap;
1195 ahci_stop_engine(ap);
1197 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1200 /* vt8251 needs SError cleared for the port to operate */
1201 ahci_scr_read(ap, SCR_ERROR, &serror);
1202 ahci_scr_write(ap, SCR_ERROR, serror);
1204 ahci_start_engine(ap);
1206 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1208 /* vt8251 doesn't clear BSY on signature FIS reception,
1209 * request follow-up softreset.
1211 return rc ?: -EAGAIN;
1214 static void ahci_postreset(struct ata_link *link, unsigned int *class)
1216 struct ata_port *ap = link->ap;
1217 void __iomem *port_mmio = ahci_port_base(ap);
1220 ata_std_postreset(link, class);
1222 /* Make sure port's ATAPI bit is set appropriately */
1223 new_tmp = tmp = readl(port_mmio + PORT_CMD);
1224 if (*class == ATA_DEV_ATAPI)
1225 new_tmp |= PORT_CMD_ATAPI;
1227 new_tmp &= ~PORT_CMD_ATAPI;
1228 if (new_tmp != tmp) {
1229 writel(new_tmp, port_mmio + PORT_CMD);
1230 readl(port_mmio + PORT_CMD); /* flush */
1234 static int ahci_pmp_softreset(struct ata_link *link, unsigned int *class,
1235 unsigned long deadline)
1237 return ahci_do_softreset(link, class, link->pmp, deadline);
1240 static u8 ahci_check_status(struct ata_port *ap)
1242 void __iomem *mmio = ap->ioaddr.cmd_addr;
1244 return readl(mmio + PORT_TFDATA) & 0xFF;
1247 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
1249 struct ahci_port_priv *pp = ap->private_data;
1250 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1252 ata_tf_from_fis(d2h_fis, tf);
1255 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
1257 struct scatterlist *sg;
1258 struct ahci_sg *ahci_sg;
1259 unsigned int n_sg = 0;
1264 * Next, the S/G list.
1266 ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
1267 ata_for_each_sg(sg, qc) {
1268 dma_addr_t addr = sg_dma_address(sg);
1269 u32 sg_len = sg_dma_len(sg);
1271 ahci_sg->addr = cpu_to_le32(addr & 0xffffffff);
1272 ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
1273 ahci_sg->flags_size = cpu_to_le32(sg_len - 1);
1282 static void ahci_qc_prep(struct ata_queued_cmd *qc)
1284 struct ata_port *ap = qc->ap;
1285 struct ahci_port_priv *pp = ap->private_data;
1286 int is_atapi = is_atapi_taskfile(&qc->tf);
1289 const u32 cmd_fis_len = 5; /* five dwords */
1290 unsigned int n_elem;
1293 * Fill in command table information. First, the header,
1294 * a SATA Register - Host to Device command FIS.
1296 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
1298 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, cmd_tbl);
1300 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
1301 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
1305 if (qc->flags & ATA_QCFLAG_DMAMAP)
1306 n_elem = ahci_fill_sg(qc, cmd_tbl);
1309 * Fill in command slot information.
1311 opts = cmd_fis_len | n_elem << 16 | (qc->dev->link->pmp << 12);
1312 if (qc->tf.flags & ATA_TFLAG_WRITE)
1313 opts |= AHCI_CMD_WRITE;
1315 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
1317 ahci_fill_cmd_slot(pp, qc->tag, opts);
1320 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1322 struct ahci_host_priv *hpriv = ap->host->private_data;
1323 struct ahci_port_priv *pp = ap->private_data;
1324 struct ata_eh_info *host_ehi = &ap->link.eh_info;
1325 struct ata_link *link = NULL;
1326 struct ata_queued_cmd *active_qc;
1327 struct ata_eh_info *active_ehi;
1330 /* determine active link */
1331 ata_port_for_each_link(link, ap)
1332 if (ata_link_active(link))
1337 active_qc = ata_qc_from_tag(ap, link->active_tag);
1338 active_ehi = &link->eh_info;
1340 /* record irq stat */
1341 ata_ehi_clear_desc(host_ehi);
1342 ata_ehi_push_desc(host_ehi, "irq_stat 0x%08x", irq_stat);
1344 /* AHCI needs SError cleared; otherwise, it might lock up */
1345 ahci_scr_read(ap, SCR_ERROR, &serror);
1346 ahci_scr_write(ap, SCR_ERROR, serror);
1347 host_ehi->serror |= serror;
1349 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
1350 if (hpriv->flags & AHCI_HFLAG_IGN_IRQ_IF_ERR)
1351 irq_stat &= ~PORT_IRQ_IF_ERR;
1353 if (irq_stat & PORT_IRQ_TF_ERR) {
1354 /* If qc is active, charge it; otherwise, the active
1355 * link. There's no active qc on NCQ errors. It will
1356 * be determined by EH by reading log page 10h.
1359 active_qc->err_mask |= AC_ERR_DEV;
1361 active_ehi->err_mask |= AC_ERR_DEV;
1363 if (hpriv->flags & AHCI_HFLAG_IGN_SERR_INTERNAL)
1364 host_ehi->serror &= ~SERR_INTERNAL;
1367 if (irq_stat & PORT_IRQ_UNK_FIS) {
1368 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
1370 active_ehi->err_mask |= AC_ERR_HSM;
1371 active_ehi->action |= ATA_EH_SOFTRESET;
1372 ata_ehi_push_desc(active_ehi,
1373 "unknown FIS %08x %08x %08x %08x" ,
1374 unk[0], unk[1], unk[2], unk[3]);
1377 if (ap->nr_pmp_links && (irq_stat & PORT_IRQ_BAD_PMP)) {
1378 active_ehi->err_mask |= AC_ERR_HSM;
1379 active_ehi->action |= ATA_EH_SOFTRESET;
1380 ata_ehi_push_desc(active_ehi, "incorrect PMP");
1383 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
1384 host_ehi->err_mask |= AC_ERR_HOST_BUS;
1385 host_ehi->action |= ATA_EH_SOFTRESET;
1386 ata_ehi_push_desc(host_ehi, "host bus error");
1389 if (irq_stat & PORT_IRQ_IF_ERR) {
1390 host_ehi->err_mask |= AC_ERR_ATA_BUS;
1391 host_ehi->action |= ATA_EH_SOFTRESET;
1392 ata_ehi_push_desc(host_ehi, "interface fatal error");
1395 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
1396 ata_ehi_hotplugged(host_ehi);
1397 ata_ehi_push_desc(host_ehi, "%s",
1398 irq_stat & PORT_IRQ_CONNECT ?
1399 "connection status changed" : "PHY RDY changed");
1402 /* okay, let's hand over to EH */
1404 if (irq_stat & PORT_IRQ_FREEZE)
1405 ata_port_freeze(ap);
1410 static void ahci_port_intr(struct ata_port *ap)
1412 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1413 struct ata_eh_info *ehi = &ap->link.eh_info;
1414 struct ahci_port_priv *pp = ap->private_data;
1415 u32 status, qc_active;
1416 int rc, known_irq = 0;
1418 status = readl(port_mmio + PORT_IRQ_STAT);
1419 writel(status, port_mmio + PORT_IRQ_STAT);
1421 if (unlikely(status & PORT_IRQ_ERROR)) {
1422 ahci_error_intr(ap, status);
1426 if (status & PORT_IRQ_SDB_FIS) {
1427 /* If the 'N' bit in word 0 of the FIS is set, we just
1428 * received asynchronous notification. Tell libata
1429 * about it. Note that as the SDB FIS itself is
1430 * accessible, SNotification can be emulated by the
1431 * driver but don't bother for the time being.
1433 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1434 u32 f0 = le32_to_cpu(f[0]);
1437 sata_async_notification(ap);
1440 /* pp->active_link is valid iff any command is in flight */
1441 if (ap->qc_active && pp->active_link->sactive)
1442 qc_active = readl(port_mmio + PORT_SCR_ACT);
1444 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
1446 rc = ata_qc_complete_multiple(ap, qc_active, NULL);
1450 ehi->err_mask |= AC_ERR_HSM;
1451 ehi->action |= ATA_EH_SOFTRESET;
1452 ata_port_freeze(ap);
1456 /* hmmm... a spurious interupt */
1458 /* if !NCQ, ignore. No modern ATA device has broken HSM
1459 * implementation for non-NCQ commands.
1461 if (!ap->link.sactive)
1464 if (status & PORT_IRQ_D2H_REG_FIS) {
1465 if (!pp->ncq_saw_d2h)
1466 ata_port_printk(ap, KERN_INFO,
1467 "D2H reg with I during NCQ, "
1468 "this message won't be printed again\n");
1469 pp->ncq_saw_d2h = 1;
1473 if (status & PORT_IRQ_DMAS_FIS) {
1474 if (!pp->ncq_saw_dmas)
1475 ata_port_printk(ap, KERN_INFO,
1476 "DMAS FIS during NCQ, "
1477 "this message won't be printed again\n");
1478 pp->ncq_saw_dmas = 1;
1482 if (status & PORT_IRQ_SDB_FIS) {
1483 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1485 if (le32_to_cpu(f[1])) {
1486 /* SDB FIS containing spurious completions
1487 * might be dangerous, whine and fail commands
1488 * with HSM violation. EH will turn off NCQ
1489 * after several such failures.
1491 ata_ehi_push_desc(ehi,
1492 "spurious completions during NCQ "
1493 "issue=0x%x SAct=0x%x FIS=%08x:%08x",
1494 readl(port_mmio + PORT_CMD_ISSUE),
1495 readl(port_mmio + PORT_SCR_ACT),
1496 le32_to_cpu(f[0]), le32_to_cpu(f[1]));
1497 ehi->err_mask |= AC_ERR_HSM;
1498 ehi->action |= ATA_EH_SOFTRESET;
1499 ata_port_freeze(ap);
1501 if (!pp->ncq_saw_sdb)
1502 ata_port_printk(ap, KERN_INFO,
1503 "spurious SDB FIS %08x:%08x during NCQ, "
1504 "this message won't be printed again\n",
1505 le32_to_cpu(f[0]), le32_to_cpu(f[1]));
1506 pp->ncq_saw_sdb = 1;
1512 ata_port_printk(ap, KERN_INFO, "spurious interrupt "
1513 "(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n",
1514 status, ap->link.active_tag, ap->link.sactive);
1517 static void ahci_irq_clear(struct ata_port *ap)
1522 static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
1524 struct ata_host *host = dev_instance;
1525 struct ahci_host_priv *hpriv;
1526 unsigned int i, handled = 0;
1528 u32 irq_stat, irq_ack = 0;
1532 hpriv = host->private_data;
1533 mmio = host->iomap[AHCI_PCI_BAR];
1535 /* sigh. 0xffffffff is a valid return from h/w */
1536 irq_stat = readl(mmio + HOST_IRQ_STAT);
1537 irq_stat &= hpriv->port_map;
1541 spin_lock(&host->lock);
1543 for (i = 0; i < host->n_ports; i++) {
1544 struct ata_port *ap;
1546 if (!(irq_stat & (1 << i)))
1549 ap = host->ports[i];
1552 VPRINTK("port %u\n", i);
1554 VPRINTK("port %u (no irq)\n", i);
1555 if (ata_ratelimit())
1556 dev_printk(KERN_WARNING, host->dev,
1557 "interrupt on disabled port %u\n", i);
1560 irq_ack |= (1 << i);
1564 writel(irq_ack, mmio + HOST_IRQ_STAT);
1568 spin_unlock(&host->lock);
1572 return IRQ_RETVAL(handled);
1575 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
1577 struct ata_port *ap = qc->ap;
1578 void __iomem *port_mmio = ahci_port_base(ap);
1579 struct ahci_port_priv *pp = ap->private_data;
1581 /* Keep track of the currently active link. It will be used
1582 * in completion path to determine whether NCQ phase is in
1585 pp->active_link = qc->dev->link;
1587 if (qc->tf.protocol == ATA_PROT_NCQ)
1588 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
1589 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
1590 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1595 static void ahci_freeze(struct ata_port *ap)
1597 void __iomem *port_mmio = ahci_port_base(ap);
1600 writel(0, port_mmio + PORT_IRQ_MASK);
1603 static void ahci_thaw(struct ata_port *ap)
1605 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
1606 void __iomem *port_mmio = ahci_port_base(ap);
1608 struct ahci_port_priv *pp = ap->private_data;
1611 tmp = readl(port_mmio + PORT_IRQ_STAT);
1612 writel(tmp, port_mmio + PORT_IRQ_STAT);
1613 writel(1 << ap->port_no, mmio + HOST_IRQ_STAT);
1615 /* turn IRQ back on, ignore BAD_PMP if PMP isn't attached */
1616 tmp = pp->intr_mask;
1617 if (!ap->nr_pmp_links)
1618 tmp &= ~PORT_IRQ_BAD_PMP;
1619 writel(tmp, port_mmio + PORT_IRQ_MASK);
1622 static void ahci_error_handler(struct ata_port *ap)
1624 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1625 /* restart engine */
1626 ahci_stop_engine(ap);
1627 ahci_start_engine(ap);
1630 /* perform recovery */
1631 sata_pmp_do_eh(ap, ata_std_prereset, ahci_softreset,
1632 ahci_hardreset, ahci_postreset,
1633 sata_pmp_std_prereset, ahci_pmp_softreset,
1634 sata_pmp_std_hardreset, sata_pmp_std_postreset);
1637 static void ahci_vt8251_error_handler(struct ata_port *ap)
1639 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1640 /* restart engine */
1641 ahci_stop_engine(ap);
1642 ahci_start_engine(ap);
1645 /* perform recovery */
1646 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_vt8251_hardreset,
1650 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
1652 struct ata_port *ap = qc->ap;
1654 /* make DMA engine forget about the failed command */
1655 if (qc->flags & ATA_QCFLAG_FAILED)
1656 ahci_kick_engine(ap, 1);
1659 static void ahci_pmp_attach(struct ata_port *ap)
1661 void __iomem *port_mmio = ahci_port_base(ap);
1664 cmd = readl(port_mmio + PORT_CMD);
1665 cmd |= PORT_CMD_PMP;
1666 writel(cmd, port_mmio + PORT_CMD);
1669 static void ahci_pmp_detach(struct ata_port *ap)
1671 void __iomem *port_mmio = ahci_port_base(ap);
1672 struct ahci_host_priv *hpriv = ap->host->private_data;
1673 unsigned long flags;
1676 cmd = readl(port_mmio + PORT_CMD);
1677 cmd &= ~PORT_CMD_PMP;
1678 writel(cmd, port_mmio + PORT_CMD);
1680 if (hpriv->cap & HOST_CAP_NCQ) {
1681 spin_lock_irqsave(ap->lock, flags);
1682 ap->flags |= ATA_FLAG_NCQ;
1683 spin_unlock_irqrestore(ap->lock, flags);
1687 static int ahci_pmp_read(struct ata_device *dev, int pmp, int reg, u32 *r_val)
1689 struct ata_port *ap = dev->link->ap;
1690 struct ata_taskfile tf;
1693 ahci_kick_engine(ap, 0);
1695 sata_pmp_read_init_tf(&tf, dev, pmp, reg);
1696 rc = ahci_exec_polled_cmd(ap, SATA_PMP_CTRL_PORT, &tf, 1, 0,
1697 SATA_PMP_SCR_TIMEOUT);
1699 ahci_tf_read(ap, &tf);
1700 *r_val = sata_pmp_read_val(&tf);
1705 static int ahci_pmp_write(struct ata_device *dev, int pmp, int reg, u32 val)
1707 struct ata_port *ap = dev->link->ap;
1708 struct ata_taskfile tf;
1710 ahci_kick_engine(ap, 0);
1712 sata_pmp_write_init_tf(&tf, dev, pmp, reg, val);
1713 return ahci_exec_polled_cmd(ap, SATA_PMP_CTRL_PORT, &tf, 1, 0,
1714 SATA_PMP_SCR_TIMEOUT);
1717 static int ahci_port_resume(struct ata_port *ap)
1720 ahci_start_port(ap);
1722 if (ap->nr_pmp_links)
1723 ahci_pmp_attach(ap);
1725 ahci_pmp_detach(ap);
1731 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
1733 const char *emsg = NULL;
1736 rc = ahci_deinit_port(ap, &emsg);
1738 ahci_power_down(ap);
1740 ata_port_printk(ap, KERN_ERR, "%s (%d)\n", emsg, rc);
1741 ahci_start_port(ap);
1747 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1749 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1750 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1753 if (mesg.event == PM_EVENT_SUSPEND) {
1754 /* AHCI spec rev1.1 section 8.3.3:
1755 * Software must disable interrupts prior to requesting a
1756 * transition of the HBA to D3 state.
1758 ctl = readl(mmio + HOST_CTL);
1759 ctl &= ~HOST_IRQ_EN;
1760 writel(ctl, mmio + HOST_CTL);
1761 readl(mmio + HOST_CTL); /* flush */
1764 return ata_pci_device_suspend(pdev, mesg);
1767 static int ahci_pci_device_resume(struct pci_dev *pdev)
1769 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1772 rc = ata_pci_device_do_resume(pdev);
1776 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
1777 rc = ahci_reset_controller(host);
1781 ahci_init_controller(host);
1784 ata_host_resume(host);
1790 static int ahci_port_start(struct ata_port *ap)
1792 struct device *dev = ap->host->dev;
1793 struct ahci_port_priv *pp;
1798 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1802 rc = ata_pad_alloc(ap, dev);
1806 mem = dmam_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma,
1810 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
1813 * First item in chunk of DMA memory: 32-slot command table,
1814 * 32 bytes each in size
1817 pp->cmd_slot_dma = mem_dma;
1819 mem += AHCI_CMD_SLOT_SZ;
1820 mem_dma += AHCI_CMD_SLOT_SZ;
1823 * Second item: Received-FIS area
1826 pp->rx_fis_dma = mem_dma;
1828 mem += AHCI_RX_FIS_SZ;
1829 mem_dma += AHCI_RX_FIS_SZ;
1832 * Third item: data area for storing a single command
1833 * and its scatter-gather table
1836 pp->cmd_tbl_dma = mem_dma;
1839 * Save off initial list of interrupts to be enabled.
1840 * This could be changed later
1842 pp->intr_mask = DEF_PORT_IRQ;
1844 ap->private_data = pp;
1846 /* engage engines, captain */
1847 return ahci_port_resume(ap);
1850 static void ahci_port_stop(struct ata_port *ap)
1852 const char *emsg = NULL;
1855 /* de-initialize port */
1856 rc = ahci_deinit_port(ap, &emsg);
1858 ata_port_printk(ap, KERN_WARNING, "%s (%d)\n", emsg, rc);
1861 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
1866 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1867 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
1869 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1871 dev_printk(KERN_ERR, &pdev->dev,
1872 "64-bit DMA enable failed\n");
1877 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1879 dev_printk(KERN_ERR, &pdev->dev,
1880 "32-bit DMA enable failed\n");
1883 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1885 dev_printk(KERN_ERR, &pdev->dev,
1886 "32-bit consistent DMA enable failed\n");
1893 static void ahci_print_info(struct ata_host *host)
1895 struct ahci_host_priv *hpriv = host->private_data;
1896 struct pci_dev *pdev = to_pci_dev(host->dev);
1897 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1898 u32 vers, cap, impl, speed;
1899 const char *speed_s;
1903 vers = readl(mmio + HOST_VERSION);
1905 impl = hpriv->port_map;
1907 speed = (cap >> 20) & 0xf;
1910 else if (speed == 2)
1915 pci_read_config_word(pdev, 0x0a, &cc);
1916 if (cc == PCI_CLASS_STORAGE_IDE)
1918 else if (cc == PCI_CLASS_STORAGE_SATA)
1920 else if (cc == PCI_CLASS_STORAGE_RAID)
1925 dev_printk(KERN_INFO, &pdev->dev,
1926 "AHCI %02x%02x.%02x%02x "
1927 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
1930 (vers >> 24) & 0xff,
1931 (vers >> 16) & 0xff,
1935 ((cap >> 8) & 0x1f) + 1,
1941 dev_printk(KERN_INFO, &pdev->dev,
1947 cap & (1 << 31) ? "64bit " : "",
1948 cap & (1 << 30) ? "ncq " : "",
1949 cap & (1 << 29) ? "sntf " : "",
1950 cap & (1 << 28) ? "ilck " : "",
1951 cap & (1 << 27) ? "stag " : "",
1952 cap & (1 << 26) ? "pm " : "",
1953 cap & (1 << 25) ? "led " : "",
1955 cap & (1 << 24) ? "clo " : "",
1956 cap & (1 << 19) ? "nz " : "",
1957 cap & (1 << 18) ? "only " : "",
1958 cap & (1 << 17) ? "pmp " : "",
1959 cap & (1 << 15) ? "pio " : "",
1960 cap & (1 << 14) ? "slum " : "",
1961 cap & (1 << 13) ? "part " : ""
1965 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1967 static int printed_version;
1968 struct ata_port_info pi = ahci_port_info[ent->driver_data];
1969 const struct ata_port_info *ppi[] = { &pi, NULL };
1970 struct device *dev = &pdev->dev;
1971 struct ahci_host_priv *hpriv;
1972 struct ata_host *host;
1977 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
1979 if (!printed_version++)
1980 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1982 /* acquire resources */
1983 rc = pcim_enable_device(pdev);
1987 rc = pcim_iomap_regions(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
1989 pcim_pin_device(pdev);
1993 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1996 hpriv->flags |= (unsigned long)pi.private_data;
1998 if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))
2001 /* save initial config */
2002 ahci_save_initial_config(pdev, hpriv);
2005 if (hpriv->cap & HOST_CAP_NCQ)
2006 pi.flags |= ATA_FLAG_NCQ;
2008 if (hpriv->cap & HOST_CAP_PMP)
2009 pi.flags |= ATA_FLAG_PMP;
2011 host = ata_host_alloc_pinfo(&pdev->dev, ppi, fls(hpriv->port_map));
2014 host->iomap = pcim_iomap_table(pdev);
2015 host->private_data = hpriv;
2017 for (i = 0; i < host->n_ports; i++) {
2018 struct ata_port *ap = host->ports[i];
2019 void __iomem *port_mmio = ahci_port_base(ap);
2021 ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");
2022 ata_port_pbar_desc(ap, AHCI_PCI_BAR,
2023 0x100 + ap->port_no * 0x80, "port");
2025 /* standard SATA port setup */
2026 if (hpriv->port_map & (1 << i))
2027 ap->ioaddr.cmd_addr = port_mmio;
2029 /* disabled/not-implemented port */
2031 ap->ops = &ata_dummy_port_ops;
2034 /* initialize adapter */
2035 rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
2039 rc = ahci_reset_controller(host);
2043 ahci_init_controller(host);
2044 ahci_print_info(host);
2046 pci_set_master(pdev);
2047 return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
2051 static int __init ahci_init(void)
2053 return pci_register_driver(&ahci_pci_driver);
2056 static void __exit ahci_exit(void)
2058 pci_unregister_driver(&ahci_pci_driver);
2062 MODULE_AUTHOR("Jeff Garzik");
2063 MODULE_DESCRIPTION("AHCI SATA low-level driver");
2064 MODULE_LICENSE("GPL");
2065 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
2066 MODULE_VERSION(DRV_VERSION);
2068 module_init(ahci_init);
2069 module_exit(ahci_exit);