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 <linux/dmi.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_cmnd.h>
47 #include <linux/libata.h>
49 #define DRV_NAME "ahci"
50 #define DRV_VERSION "3.0"
52 static int ahci_skip_host_reset
;
53 module_param_named(skip_host_reset
, ahci_skip_host_reset
, int, 0444);
54 MODULE_PARM_DESC(skip_host_reset
, "skip global host reset (0=don't skip, 1=skip)");
56 static int ahci_enable_alpm(struct ata_port
*ap
,
58 static void ahci_disable_alpm(struct ata_port
*ap
);
59 static ssize_t
ahci_led_show(struct ata_port
*ap
, char *buf
);
60 static ssize_t
ahci_led_store(struct ata_port
*ap
, const char *buf
,
62 static ssize_t
ahci_transmit_led_message(struct ata_port
*ap
, u32 state
,
69 AHCI_MAX_SG
= 168, /* hardware max is 64K */
70 AHCI_DMA_BOUNDARY
= 0xffffffff,
73 AHCI_CMD_SLOT_SZ
= AHCI_MAX_CMDS
* AHCI_CMD_SZ
,
75 AHCI_CMD_TBL_CDB
= 0x40,
76 AHCI_CMD_TBL_HDR_SZ
= 0x80,
77 AHCI_CMD_TBL_SZ
= AHCI_CMD_TBL_HDR_SZ
+ (AHCI_MAX_SG
* 16),
78 AHCI_CMD_TBL_AR_SZ
= AHCI_CMD_TBL_SZ
* AHCI_MAX_CMDS
,
79 AHCI_PORT_PRIV_DMA_SZ
= AHCI_CMD_SLOT_SZ
+ AHCI_CMD_TBL_AR_SZ
+
81 AHCI_IRQ_ON_SG
= (1 << 31),
82 AHCI_CMD_ATAPI
= (1 << 5),
83 AHCI_CMD_WRITE
= (1 << 6),
84 AHCI_CMD_PREFETCH
= (1 << 7),
85 AHCI_CMD_RESET
= (1 << 8),
86 AHCI_CMD_CLR_BUSY
= (1 << 10),
88 RX_FIS_D2H_REG
= 0x40, /* offset of D2H Register FIS data */
89 RX_FIS_SDB
= 0x58, /* offset of SDB FIS data */
90 RX_FIS_UNK
= 0x60, /* offset of Unknown FIS data */
93 board_ahci_vt8251
= 1,
94 board_ahci_ign_iferr
= 2,
101 /* global controller registers */
102 HOST_CAP
= 0x00, /* host capabilities */
103 HOST_CTL
= 0x04, /* global host control */
104 HOST_IRQ_STAT
= 0x08, /* interrupt status */
105 HOST_PORTS_IMPL
= 0x0c, /* bitmap of implemented ports */
106 HOST_VERSION
= 0x10, /* AHCI spec. version compliancy */
107 HOST_EM_LOC
= 0x1c, /* Enclosure Management location */
108 HOST_EM_CTL
= 0x20, /* Enclosure Management Control */
111 HOST_RESET
= (1 << 0), /* reset controller; self-clear */
112 HOST_IRQ_EN
= (1 << 1), /* global IRQ enable */
113 HOST_AHCI_EN
= (1 << 31), /* AHCI enabled */
116 HOST_CAP_EMS
= (1 << 6), /* Enclosure Management support */
117 HOST_CAP_SSC
= (1 << 14), /* Slumber capable */
118 HOST_CAP_PMP
= (1 << 17), /* Port Multiplier support */
119 HOST_CAP_CLO
= (1 << 24), /* Command List Override support */
120 HOST_CAP_ALPM
= (1 << 26), /* Aggressive Link PM support */
121 HOST_CAP_SSS
= (1 << 27), /* Staggered Spin-up */
122 HOST_CAP_SNTF
= (1 << 29), /* SNotification register */
123 HOST_CAP_NCQ
= (1 << 30), /* Native Command Queueing */
124 HOST_CAP_64
= (1 << 31), /* PCI DAC (64-bit DMA) support */
126 /* registers for each SATA port */
127 PORT_LST_ADDR
= 0x00, /* command list DMA addr */
128 PORT_LST_ADDR_HI
= 0x04, /* command list DMA addr hi */
129 PORT_FIS_ADDR
= 0x08, /* FIS rx buf addr */
130 PORT_FIS_ADDR_HI
= 0x0c, /* FIS rx buf addr hi */
131 PORT_IRQ_STAT
= 0x10, /* interrupt status */
132 PORT_IRQ_MASK
= 0x14, /* interrupt enable/disable mask */
133 PORT_CMD
= 0x18, /* port command */
134 PORT_TFDATA
= 0x20, /* taskfile data */
135 PORT_SIG
= 0x24, /* device TF signature */
136 PORT_CMD_ISSUE
= 0x38, /* command issue */
137 PORT_SCR_STAT
= 0x28, /* SATA phy register: SStatus */
138 PORT_SCR_CTL
= 0x2c, /* SATA phy register: SControl */
139 PORT_SCR_ERR
= 0x30, /* SATA phy register: SError */
140 PORT_SCR_ACT
= 0x34, /* SATA phy register: SActive */
141 PORT_SCR_NTF
= 0x3c, /* SATA phy register: SNotification */
143 /* PORT_IRQ_{STAT,MASK} bits */
144 PORT_IRQ_COLD_PRES
= (1 << 31), /* cold presence detect */
145 PORT_IRQ_TF_ERR
= (1 << 30), /* task file error */
146 PORT_IRQ_HBUS_ERR
= (1 << 29), /* host bus fatal error */
147 PORT_IRQ_HBUS_DATA_ERR
= (1 << 28), /* host bus data error */
148 PORT_IRQ_IF_ERR
= (1 << 27), /* interface fatal error */
149 PORT_IRQ_IF_NONFATAL
= (1 << 26), /* interface non-fatal error */
150 PORT_IRQ_OVERFLOW
= (1 << 24), /* xfer exhausted available S/G */
151 PORT_IRQ_BAD_PMP
= (1 << 23), /* incorrect port multiplier */
153 PORT_IRQ_PHYRDY
= (1 << 22), /* PhyRdy changed */
154 PORT_IRQ_DEV_ILCK
= (1 << 7), /* device interlock */
155 PORT_IRQ_CONNECT
= (1 << 6), /* port connect change status */
156 PORT_IRQ_SG_DONE
= (1 << 5), /* descriptor processed */
157 PORT_IRQ_UNK_FIS
= (1 << 4), /* unknown FIS rx'd */
158 PORT_IRQ_SDB_FIS
= (1 << 3), /* Set Device Bits FIS rx'd */
159 PORT_IRQ_DMAS_FIS
= (1 << 2), /* DMA Setup FIS rx'd */
160 PORT_IRQ_PIOS_FIS
= (1 << 1), /* PIO Setup FIS rx'd */
161 PORT_IRQ_D2H_REG_FIS
= (1 << 0), /* D2H Register FIS rx'd */
163 PORT_IRQ_FREEZE
= PORT_IRQ_HBUS_ERR
|
169 PORT_IRQ_ERROR
= PORT_IRQ_FREEZE
|
171 PORT_IRQ_HBUS_DATA_ERR
,
172 DEF_PORT_IRQ
= PORT_IRQ_ERROR
| PORT_IRQ_SG_DONE
|
173 PORT_IRQ_SDB_FIS
| PORT_IRQ_DMAS_FIS
|
174 PORT_IRQ_PIOS_FIS
| PORT_IRQ_D2H_REG_FIS
,
177 PORT_CMD_ASP
= (1 << 27), /* Aggressive Slumber/Partial */
178 PORT_CMD_ALPE
= (1 << 26), /* Aggressive Link PM enable */
179 PORT_CMD_ATAPI
= (1 << 24), /* Device is ATAPI */
180 PORT_CMD_PMP
= (1 << 17), /* PMP attached */
181 PORT_CMD_LIST_ON
= (1 << 15), /* cmd list DMA engine running */
182 PORT_CMD_FIS_ON
= (1 << 14), /* FIS DMA engine running */
183 PORT_CMD_FIS_RX
= (1 << 4), /* Enable FIS receive DMA engine */
184 PORT_CMD_CLO
= (1 << 3), /* Command list override */
185 PORT_CMD_POWER_ON
= (1 << 2), /* Power up device */
186 PORT_CMD_SPIN_UP
= (1 << 1), /* Spin up device */
187 PORT_CMD_START
= (1 << 0), /* Enable port DMA engine */
189 PORT_CMD_ICC_MASK
= (0xf << 28), /* i/f ICC state mask */
190 PORT_CMD_ICC_ACTIVE
= (0x1 << 28), /* Put i/f in active state */
191 PORT_CMD_ICC_PARTIAL
= (0x2 << 28), /* Put i/f in partial state */
192 PORT_CMD_ICC_SLUMBER
= (0x6 << 28), /* Put i/f in slumber state */
194 /* hpriv->flags bits */
195 AHCI_HFLAG_NO_NCQ
= (1 << 0),
196 AHCI_HFLAG_IGN_IRQ_IF_ERR
= (1 << 1), /* ignore IRQ_IF_ERR */
197 AHCI_HFLAG_IGN_SERR_INTERNAL
= (1 << 2), /* ignore SERR_INTERNAL */
198 AHCI_HFLAG_32BIT_ONLY
= (1 << 3), /* force 32bit */
199 AHCI_HFLAG_MV_PATA
= (1 << 4), /* PATA port */
200 AHCI_HFLAG_NO_MSI
= (1 << 5), /* no PCI MSI */
201 AHCI_HFLAG_NO_PMP
= (1 << 6), /* no PMP */
202 AHCI_HFLAG_NO_HOTPLUG
= (1 << 7), /* ignore PxSERR.DIAG.N */
203 AHCI_HFLAG_SECT255
= (1 << 8), /* max 255 sectors */
204 AHCI_HFLAG_YES_NCQ
= (1 << 9), /* force NCQ cap on */
208 AHCI_FLAG_COMMON
= ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
|
209 ATA_FLAG_MMIO
| ATA_FLAG_PIO_DMA
|
210 ATA_FLAG_ACPI_SATA
| ATA_FLAG_AN
|
213 ICH_MAP
= 0x90, /* ICH MAP register */
216 EM_CTL_RST
= (1 << 9), /* Reset */
217 EM_CTL_TM
= (1 << 8), /* Transmit Message */
218 EM_CTL_ALHD
= (1 << 26), /* Activity LED */
221 struct ahci_cmd_hdr
{
236 struct ahci_em_priv
{
237 enum sw_activity blink_policy
;
238 struct timer_list timer
;
239 unsigned long saved_activity
;
240 unsigned long activity
;
241 unsigned long led_state
;
244 struct ahci_host_priv
{
245 unsigned int flags
; /* AHCI_HFLAG_* */
246 u32 cap
; /* cap to use */
247 u32 port_map
; /* port map to use */
248 u32 saved_cap
; /* saved initial cap */
249 u32 saved_port_map
; /* saved initial port_map */
250 u32 em_loc
; /* enclosure management location */
253 struct ahci_port_priv
{
254 struct ata_link
*active_link
;
255 struct ahci_cmd_hdr
*cmd_slot
;
256 dma_addr_t cmd_slot_dma
;
258 dma_addr_t cmd_tbl_dma
;
260 dma_addr_t rx_fis_dma
;
261 /* for NCQ spurious interrupt analysis */
262 unsigned int ncq_saw_d2h
:1;
263 unsigned int ncq_saw_dmas
:1;
264 unsigned int ncq_saw_sdb
:1;
265 u32 intr_mask
; /* interrupts to enable */
266 struct ahci_em_priv em_priv
[MAX_SLOTS
];/* enclosure management info
270 static int ahci_scr_read(struct ata_port
*ap
, unsigned int sc_reg
, u32
*val
);
271 static int ahci_scr_write(struct ata_port
*ap
, unsigned int sc_reg
, u32 val
);
272 static int ahci_init_one(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
273 static unsigned int ahci_qc_issue(struct ata_queued_cmd
*qc
);
274 static bool ahci_qc_fill_rtf(struct ata_queued_cmd
*qc
);
275 static int ahci_port_start(struct ata_port
*ap
);
276 static void ahci_port_stop(struct ata_port
*ap
);
277 static void ahci_qc_prep(struct ata_queued_cmd
*qc
);
278 static void ahci_freeze(struct ata_port
*ap
);
279 static void ahci_thaw(struct ata_port
*ap
);
280 static void ahci_pmp_attach(struct ata_port
*ap
);
281 static void ahci_pmp_detach(struct ata_port
*ap
);
282 static int ahci_softreset(struct ata_link
*link
, unsigned int *class,
283 unsigned long deadline
);
284 static int ahci_sb600_softreset(struct ata_link
*link
, unsigned int *class,
285 unsigned long deadline
);
286 static int ahci_hardreset(struct ata_link
*link
, unsigned int *class,
287 unsigned long deadline
);
288 static int ahci_vt8251_hardreset(struct ata_link
*link
, unsigned int *class,
289 unsigned long deadline
);
290 static int ahci_p5wdh_hardreset(struct ata_link
*link
, unsigned int *class,
291 unsigned long deadline
);
292 static void ahci_postreset(struct ata_link
*link
, unsigned int *class);
293 static void ahci_error_handler(struct ata_port
*ap
);
294 static void ahci_post_internal_cmd(struct ata_queued_cmd
*qc
);
295 static int ahci_port_resume(struct ata_port
*ap
);
296 static void ahci_dev_config(struct ata_device
*dev
);
297 static unsigned int ahci_fill_sg(struct ata_queued_cmd
*qc
, void *cmd_tbl
);
298 static void ahci_fill_cmd_slot(struct ahci_port_priv
*pp
, unsigned int tag
,
301 static int ahci_port_suspend(struct ata_port
*ap
, pm_message_t mesg
);
302 static int ahci_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
303 static int ahci_pci_device_resume(struct pci_dev
*pdev
);
305 static ssize_t
ahci_activity_show(struct ata_device
*dev
, char *buf
);
306 static ssize_t
ahci_activity_store(struct ata_device
*dev
,
307 enum sw_activity val
);
308 static void ahci_init_sw_activity(struct ata_link
*link
);
310 static struct device_attribute
*ahci_shost_attrs
[] = {
311 &dev_attr_link_power_management_policy
,
312 &dev_attr_em_message_type
,
313 &dev_attr_em_message
,
317 static struct device_attribute
*ahci_sdev_attrs
[] = {
318 &dev_attr_sw_activity
,
322 static struct scsi_host_template ahci_sht
= {
323 ATA_NCQ_SHT(DRV_NAME
),
324 .can_queue
= AHCI_MAX_CMDS
- 1,
325 .sg_tablesize
= AHCI_MAX_SG
,
326 .dma_boundary
= AHCI_DMA_BOUNDARY
,
327 .shost_attrs
= ahci_shost_attrs
,
328 .sdev_attrs
= ahci_sdev_attrs
,
331 static struct ata_port_operations ahci_ops
= {
332 .inherits
= &sata_pmp_port_ops
,
334 .qc_defer
= sata_pmp_qc_defer_cmd_switch
,
335 .qc_prep
= ahci_qc_prep
,
336 .qc_issue
= ahci_qc_issue
,
337 .qc_fill_rtf
= ahci_qc_fill_rtf
,
339 .freeze
= ahci_freeze
,
341 .softreset
= ahci_softreset
,
342 .hardreset
= ahci_hardreset
,
343 .postreset
= ahci_postreset
,
344 .pmp_softreset
= ahci_softreset
,
345 .error_handler
= ahci_error_handler
,
346 .post_internal_cmd
= ahci_post_internal_cmd
,
347 .dev_config
= ahci_dev_config
,
349 .scr_read
= ahci_scr_read
,
350 .scr_write
= ahci_scr_write
,
351 .pmp_attach
= ahci_pmp_attach
,
352 .pmp_detach
= ahci_pmp_detach
,
354 .enable_pm
= ahci_enable_alpm
,
355 .disable_pm
= ahci_disable_alpm
,
356 .em_show
= ahci_led_show
,
357 .em_store
= ahci_led_store
,
358 .sw_activity_show
= ahci_activity_show
,
359 .sw_activity_store
= ahci_activity_store
,
361 .port_suspend
= ahci_port_suspend
,
362 .port_resume
= ahci_port_resume
,
364 .port_start
= ahci_port_start
,
365 .port_stop
= ahci_port_stop
,
368 static struct ata_port_operations ahci_vt8251_ops
= {
369 .inherits
= &ahci_ops
,
370 .hardreset
= ahci_vt8251_hardreset
,
373 static struct ata_port_operations ahci_p5wdh_ops
= {
374 .inherits
= &ahci_ops
,
375 .hardreset
= ahci_p5wdh_hardreset
,
378 static struct ata_port_operations ahci_sb600_ops
= {
379 .inherits
= &ahci_ops
,
380 .softreset
= ahci_sb600_softreset
,
381 .pmp_softreset
= ahci_sb600_softreset
,
384 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
386 static const struct ata_port_info ahci_port_info
[] = {
389 .flags
= AHCI_FLAG_COMMON
,
390 .pio_mask
= 0x1f, /* pio0-4 */
391 .udma_mask
= ATA_UDMA6
,
392 .port_ops
= &ahci_ops
,
394 /* board_ahci_vt8251 */
396 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ
| AHCI_HFLAG_NO_PMP
),
397 .flags
= AHCI_FLAG_COMMON
,
398 .pio_mask
= 0x1f, /* pio0-4 */
399 .udma_mask
= ATA_UDMA6
,
400 .port_ops
= &ahci_vt8251_ops
,
402 /* board_ahci_ign_iferr */
404 AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR
),
405 .flags
= AHCI_FLAG_COMMON
,
406 .pio_mask
= 0x1f, /* pio0-4 */
407 .udma_mask
= ATA_UDMA6
,
408 .port_ops
= &ahci_ops
,
410 /* board_ahci_sb600 */
412 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL
|
413 AHCI_HFLAG_32BIT_ONLY
| AHCI_HFLAG_NO_MSI
|
415 .flags
= AHCI_FLAG_COMMON
,
416 .pio_mask
= 0x1f, /* pio0-4 */
417 .udma_mask
= ATA_UDMA6
,
418 .port_ops
= &ahci_sb600_ops
,
422 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ
| AHCI_HFLAG_NO_MSI
|
424 .flags
= ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
|
425 ATA_FLAG_MMIO
| ATA_FLAG_PIO_DMA
,
426 .pio_mask
= 0x1f, /* pio0-4 */
427 .udma_mask
= ATA_UDMA6
,
428 .port_ops
= &ahci_ops
,
430 /* board_ahci_sb700 */
432 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL
),
433 .flags
= AHCI_FLAG_COMMON
,
434 .pio_mask
= 0x1f, /* pio0-4 */
435 .udma_mask
= ATA_UDMA6
,
436 .port_ops
= &ahci_sb600_ops
,
438 /* board_ahci_mcp65 */
440 AHCI_HFLAGS (AHCI_HFLAG_YES_NCQ
),
441 .flags
= AHCI_FLAG_COMMON
,
442 .pio_mask
= 0x1f, /* pio0-4 */
443 .udma_mask
= ATA_UDMA6
,
444 .port_ops
= &ahci_ops
,
446 /* board_ahci_nopmp */
448 AHCI_HFLAGS (AHCI_HFLAG_NO_PMP
),
449 .flags
= AHCI_FLAG_COMMON
,
450 .pio_mask
= 0x1f, /* pio0-4 */
451 .udma_mask
= ATA_UDMA6
,
452 .port_ops
= &ahci_ops
,
456 static const struct pci_device_id ahci_pci_tbl
[] = {
458 { PCI_VDEVICE(INTEL
, 0x2652), board_ahci
}, /* ICH6 */
459 { PCI_VDEVICE(INTEL
, 0x2653), board_ahci
}, /* ICH6M */
460 { PCI_VDEVICE(INTEL
, 0x27c1), board_ahci
}, /* ICH7 */
461 { PCI_VDEVICE(INTEL
, 0x27c5), board_ahci
}, /* ICH7M */
462 { PCI_VDEVICE(INTEL
, 0x27c3), board_ahci
}, /* ICH7R */
463 { PCI_VDEVICE(AL
, 0x5288), board_ahci_ign_iferr
}, /* ULi M5288 */
464 { PCI_VDEVICE(INTEL
, 0x2681), board_ahci
}, /* ESB2 */
465 { PCI_VDEVICE(INTEL
, 0x2682), board_ahci
}, /* ESB2 */
466 { PCI_VDEVICE(INTEL
, 0x2683), board_ahci
}, /* ESB2 */
467 { PCI_VDEVICE(INTEL
, 0x27c6), board_ahci
}, /* ICH7-M DH */
468 { PCI_VDEVICE(INTEL
, 0x2821), board_ahci
}, /* ICH8 */
469 { PCI_VDEVICE(INTEL
, 0x2822), board_ahci
}, /* ICH8 */
470 { PCI_VDEVICE(INTEL
, 0x2824), board_ahci
}, /* ICH8 */
471 { PCI_VDEVICE(INTEL
, 0x2829), board_ahci
}, /* ICH8M */
472 { PCI_VDEVICE(INTEL
, 0x282a), board_ahci
}, /* ICH8M */
473 { PCI_VDEVICE(INTEL
, 0x2922), board_ahci
}, /* ICH9 */
474 { PCI_VDEVICE(INTEL
, 0x2923), board_ahci
}, /* ICH9 */
475 { PCI_VDEVICE(INTEL
, 0x2924), board_ahci
}, /* ICH9 */
476 { PCI_VDEVICE(INTEL
, 0x2925), board_ahci
}, /* ICH9 */
477 { PCI_VDEVICE(INTEL
, 0x2927), board_ahci
}, /* ICH9 */
478 { PCI_VDEVICE(INTEL
, 0x2929), board_ahci
}, /* ICH9M */
479 { PCI_VDEVICE(INTEL
, 0x292a), board_ahci
}, /* ICH9M */
480 { PCI_VDEVICE(INTEL
, 0x292b), board_ahci
}, /* ICH9M */
481 { PCI_VDEVICE(INTEL
, 0x292c), board_ahci
}, /* ICH9M */
482 { PCI_VDEVICE(INTEL
, 0x292f), board_ahci
}, /* ICH9M */
483 { PCI_VDEVICE(INTEL
, 0x294d), board_ahci
}, /* ICH9 */
484 { PCI_VDEVICE(INTEL
, 0x294e), board_ahci
}, /* ICH9M */
485 { PCI_VDEVICE(INTEL
, 0x502a), board_ahci
}, /* Tolapai */
486 { PCI_VDEVICE(INTEL
, 0x502b), board_ahci
}, /* Tolapai */
487 { PCI_VDEVICE(INTEL
, 0x3a05), board_ahci
}, /* ICH10 */
488 { PCI_VDEVICE(INTEL
, 0x3a25), board_ahci
}, /* ICH10 */
489 { PCI_VDEVICE(INTEL
, 0x3b24), board_ahci
}, /* PCH RAID */
490 { PCI_VDEVICE(INTEL
, 0x3b2b), board_ahci
}, /* PCH RAID */
492 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
493 { PCI_VENDOR_ID_JMICRON
, PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
,
494 PCI_CLASS_STORAGE_SATA_AHCI
, 0xffffff, board_ahci_ign_iferr
},
497 { PCI_VDEVICE(ATI
, 0x4380), board_ahci_sb600
}, /* ATI SB600 */
498 { PCI_VDEVICE(ATI
, 0x4390), board_ahci_sb700
}, /* ATI SB700/800 */
499 { PCI_VDEVICE(ATI
, 0x4391), board_ahci_sb700
}, /* ATI SB700/800 */
500 { PCI_VDEVICE(ATI
, 0x4392), board_ahci_sb700
}, /* ATI SB700/800 */
501 { PCI_VDEVICE(ATI
, 0x4393), board_ahci_sb700
}, /* ATI SB700/800 */
502 { PCI_VDEVICE(ATI
, 0x4394), board_ahci_sb700
}, /* ATI SB700/800 */
503 { PCI_VDEVICE(ATI
, 0x4395), board_ahci_sb700
}, /* ATI SB700/800 */
506 { PCI_VDEVICE(VIA
, 0x3349), board_ahci_vt8251
}, /* VIA VT8251 */
507 { PCI_VDEVICE(VIA
, 0x6287), board_ahci_vt8251
}, /* VIA VT8251 */
510 { PCI_VDEVICE(NVIDIA
, 0x044c), board_ahci_mcp65
}, /* MCP65 */
511 { PCI_VDEVICE(NVIDIA
, 0x044d), board_ahci_mcp65
}, /* MCP65 */
512 { PCI_VDEVICE(NVIDIA
, 0x044e), board_ahci_mcp65
}, /* MCP65 */
513 { PCI_VDEVICE(NVIDIA
, 0x044f), board_ahci_mcp65
}, /* MCP65 */
514 { PCI_VDEVICE(NVIDIA
, 0x045c), board_ahci_mcp65
}, /* MCP65 */
515 { PCI_VDEVICE(NVIDIA
, 0x045d), board_ahci_mcp65
}, /* MCP65 */
516 { PCI_VDEVICE(NVIDIA
, 0x045e), board_ahci_mcp65
}, /* MCP65 */
517 { PCI_VDEVICE(NVIDIA
, 0x045f), board_ahci_mcp65
}, /* MCP65 */
518 { PCI_VDEVICE(NVIDIA
, 0x0550), board_ahci
}, /* MCP67 */
519 { PCI_VDEVICE(NVIDIA
, 0x0551), board_ahci
}, /* MCP67 */
520 { PCI_VDEVICE(NVIDIA
, 0x0552), board_ahci
}, /* MCP67 */
521 { PCI_VDEVICE(NVIDIA
, 0x0553), board_ahci
}, /* MCP67 */
522 { PCI_VDEVICE(NVIDIA
, 0x0554), board_ahci
}, /* MCP67 */
523 { PCI_VDEVICE(NVIDIA
, 0x0555), board_ahci
}, /* MCP67 */
524 { PCI_VDEVICE(NVIDIA
, 0x0556), board_ahci
}, /* MCP67 */
525 { PCI_VDEVICE(NVIDIA
, 0x0557), board_ahci
}, /* MCP67 */
526 { PCI_VDEVICE(NVIDIA
, 0x0558), board_ahci
}, /* MCP67 */
527 { PCI_VDEVICE(NVIDIA
, 0x0559), board_ahci
}, /* MCP67 */
528 { PCI_VDEVICE(NVIDIA
, 0x055a), board_ahci
}, /* MCP67 */
529 { PCI_VDEVICE(NVIDIA
, 0x055b), board_ahci
}, /* MCP67 */
530 { PCI_VDEVICE(NVIDIA
, 0x07f0), board_ahci
}, /* MCP73 */
531 { PCI_VDEVICE(NVIDIA
, 0x07f1), board_ahci
}, /* MCP73 */
532 { PCI_VDEVICE(NVIDIA
, 0x07f2), board_ahci
}, /* MCP73 */
533 { PCI_VDEVICE(NVIDIA
, 0x07f3), board_ahci
}, /* MCP73 */
534 { PCI_VDEVICE(NVIDIA
, 0x07f4), board_ahci
}, /* MCP73 */
535 { PCI_VDEVICE(NVIDIA
, 0x07f5), board_ahci
}, /* MCP73 */
536 { PCI_VDEVICE(NVIDIA
, 0x07f6), board_ahci
}, /* MCP73 */
537 { PCI_VDEVICE(NVIDIA
, 0x07f7), board_ahci
}, /* MCP73 */
538 { PCI_VDEVICE(NVIDIA
, 0x07f8), board_ahci
}, /* MCP73 */
539 { PCI_VDEVICE(NVIDIA
, 0x07f9), board_ahci
}, /* MCP73 */
540 { PCI_VDEVICE(NVIDIA
, 0x07fa), board_ahci
}, /* MCP73 */
541 { PCI_VDEVICE(NVIDIA
, 0x07fb), board_ahci
}, /* MCP73 */
542 { PCI_VDEVICE(NVIDIA
, 0x0ad0), board_ahci
}, /* MCP77 */
543 { PCI_VDEVICE(NVIDIA
, 0x0ad1), board_ahci
}, /* MCP77 */
544 { PCI_VDEVICE(NVIDIA
, 0x0ad2), board_ahci
}, /* MCP77 */
545 { PCI_VDEVICE(NVIDIA
, 0x0ad3), board_ahci
}, /* MCP77 */
546 { PCI_VDEVICE(NVIDIA
, 0x0ad4), board_ahci
}, /* MCP77 */
547 { PCI_VDEVICE(NVIDIA
, 0x0ad5), board_ahci
}, /* MCP77 */
548 { PCI_VDEVICE(NVIDIA
, 0x0ad6), board_ahci
}, /* MCP77 */
549 { PCI_VDEVICE(NVIDIA
, 0x0ad7), board_ahci
}, /* MCP77 */
550 { PCI_VDEVICE(NVIDIA
, 0x0ad8), board_ahci
}, /* MCP77 */
551 { PCI_VDEVICE(NVIDIA
, 0x0ad9), board_ahci
}, /* MCP77 */
552 { PCI_VDEVICE(NVIDIA
, 0x0ada), board_ahci
}, /* MCP77 */
553 { PCI_VDEVICE(NVIDIA
, 0x0adb), board_ahci
}, /* MCP77 */
554 { PCI_VDEVICE(NVIDIA
, 0x0ab4), board_ahci
}, /* MCP79 */
555 { PCI_VDEVICE(NVIDIA
, 0x0ab5), board_ahci
}, /* MCP79 */
556 { PCI_VDEVICE(NVIDIA
, 0x0ab6), board_ahci
}, /* MCP79 */
557 { PCI_VDEVICE(NVIDIA
, 0x0ab7), board_ahci
}, /* MCP79 */
558 { PCI_VDEVICE(NVIDIA
, 0x0ab8), board_ahci
}, /* MCP79 */
559 { PCI_VDEVICE(NVIDIA
, 0x0ab9), board_ahci
}, /* MCP79 */
560 { PCI_VDEVICE(NVIDIA
, 0x0aba), board_ahci
}, /* MCP79 */
561 { PCI_VDEVICE(NVIDIA
, 0x0abb), board_ahci
}, /* MCP79 */
562 { PCI_VDEVICE(NVIDIA
, 0x0abc), board_ahci
}, /* MCP79 */
563 { PCI_VDEVICE(NVIDIA
, 0x0abd), board_ahci
}, /* MCP79 */
564 { PCI_VDEVICE(NVIDIA
, 0x0abe), board_ahci
}, /* MCP79 */
565 { PCI_VDEVICE(NVIDIA
, 0x0abf), board_ahci
}, /* MCP79 */
566 { PCI_VDEVICE(NVIDIA
, 0x0bc8), board_ahci
}, /* MCP7B */
567 { PCI_VDEVICE(NVIDIA
, 0x0bc9), board_ahci
}, /* MCP7B */
568 { PCI_VDEVICE(NVIDIA
, 0x0bca), board_ahci
}, /* MCP7B */
569 { PCI_VDEVICE(NVIDIA
, 0x0bcb), board_ahci
}, /* MCP7B */
570 { PCI_VDEVICE(NVIDIA
, 0x0bcc), board_ahci
}, /* MCP7B */
571 { PCI_VDEVICE(NVIDIA
, 0x0bcd), board_ahci
}, /* MCP7B */
572 { PCI_VDEVICE(NVIDIA
, 0x0bce), board_ahci
}, /* MCP7B */
573 { PCI_VDEVICE(NVIDIA
, 0x0bcf), board_ahci
}, /* MCP7B */
574 { PCI_VDEVICE(NVIDIA
, 0x0bc4), board_ahci
}, /* MCP7B */
575 { PCI_VDEVICE(NVIDIA
, 0x0bc5), board_ahci
}, /* MCP7B */
576 { PCI_VDEVICE(NVIDIA
, 0x0bc6), board_ahci
}, /* MCP7B */
577 { PCI_VDEVICE(NVIDIA
, 0x0bc7), board_ahci
}, /* MCP7B */
580 { PCI_VDEVICE(SI
, 0x1184), board_ahci_nopmp
}, /* SiS 966 */
581 { PCI_VDEVICE(SI
, 0x1185), board_ahci_nopmp
}, /* SiS 968 */
582 { PCI_VDEVICE(SI
, 0x0186), board_ahci_nopmp
}, /* SiS 968 */
585 { PCI_VDEVICE(MARVELL
, 0x6145), board_ahci_mv
}, /* 6145 */
586 { PCI_VDEVICE(MARVELL
, 0x6121), board_ahci_mv
}, /* 6121 */
588 /* Generic, PCI class code for AHCI */
589 { PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
,
590 PCI_CLASS_STORAGE_SATA_AHCI
, 0xffffff, board_ahci
},
592 { } /* terminate list */
596 static struct pci_driver ahci_pci_driver
= {
598 .id_table
= ahci_pci_tbl
,
599 .probe
= ahci_init_one
,
600 .remove
= ata_pci_remove_one
,
602 .suspend
= ahci_pci_device_suspend
,
603 .resume
= ahci_pci_device_resume
,
607 static int ahci_em_messages
= 1;
608 module_param(ahci_em_messages
, int, 0444);
609 /* add other LED protocol types when they become supported */
610 MODULE_PARM_DESC(ahci_em_messages
,
611 "Set AHCI Enclosure Management Message type (0 = disabled, 1 = LED");
613 static inline int ahci_nr_ports(u32 cap
)
615 return (cap
& 0x1f) + 1;
618 static inline void __iomem
*__ahci_port_base(struct ata_host
*host
,
619 unsigned int port_no
)
621 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
623 return mmio
+ 0x100 + (port_no
* 0x80);
626 static inline void __iomem
*ahci_port_base(struct ata_port
*ap
)
628 return __ahci_port_base(ap
->host
, ap
->port_no
);
631 static void ahci_enable_ahci(void __iomem
*mmio
)
636 /* turn on AHCI_EN */
637 tmp
= readl(mmio
+ HOST_CTL
);
638 if (tmp
& HOST_AHCI_EN
)
641 /* Some controllers need AHCI_EN to be written multiple times.
642 * Try a few times before giving up.
644 for (i
= 0; i
< 5; i
++) {
646 writel(tmp
, mmio
+ HOST_CTL
);
647 tmp
= readl(mmio
+ HOST_CTL
); /* flush && sanity check */
648 if (tmp
& HOST_AHCI_EN
)
657 * ahci_save_initial_config - Save and fixup initial config values
658 * @pdev: target PCI device
659 * @hpriv: host private area to store config values
661 * Some registers containing configuration info might be setup by
662 * BIOS and might be cleared on reset. This function saves the
663 * initial values of those registers into @hpriv such that they
664 * can be restored after controller reset.
666 * If inconsistent, config values are fixed up by this function.
671 static void ahci_save_initial_config(struct pci_dev
*pdev
,
672 struct ahci_host_priv
*hpriv
)
674 void __iomem
*mmio
= pcim_iomap_table(pdev
)[AHCI_PCI_BAR
];
679 /* make sure AHCI mode is enabled before accessing CAP */
680 ahci_enable_ahci(mmio
);
682 /* Values prefixed with saved_ are written back to host after
683 * reset. Values without are used for driver operation.
685 hpriv
->saved_cap
= cap
= readl(mmio
+ HOST_CAP
);
686 hpriv
->saved_port_map
= port_map
= readl(mmio
+ HOST_PORTS_IMPL
);
688 /* some chips have errata preventing 64bit use */
689 if ((cap
& HOST_CAP_64
) && (hpriv
->flags
& AHCI_HFLAG_32BIT_ONLY
)) {
690 dev_printk(KERN_INFO
, &pdev
->dev
,
691 "controller can't do 64bit DMA, forcing 32bit\n");
695 if ((cap
& HOST_CAP_NCQ
) && (hpriv
->flags
& AHCI_HFLAG_NO_NCQ
)) {
696 dev_printk(KERN_INFO
, &pdev
->dev
,
697 "controller can't do NCQ, turning off CAP_NCQ\n");
698 cap
&= ~HOST_CAP_NCQ
;
701 if (!(cap
& HOST_CAP_NCQ
) && (hpriv
->flags
& AHCI_HFLAG_YES_NCQ
)) {
702 dev_printk(KERN_INFO
, &pdev
->dev
,
703 "controller can do NCQ, turning on CAP_NCQ\n");
707 if ((cap
& HOST_CAP_PMP
) && (hpriv
->flags
& AHCI_HFLAG_NO_PMP
)) {
708 dev_printk(KERN_INFO
, &pdev
->dev
,
709 "controller can't do PMP, turning off CAP_PMP\n");
710 cap
&= ~HOST_CAP_PMP
;
713 if (pdev
->vendor
== PCI_VENDOR_ID_JMICRON
&& pdev
->device
== 0x2361 &&
715 dev_printk(KERN_INFO
, &pdev
->dev
,
716 "JMB361 has only one port, port_map 0x%x -> 0x%x\n",
722 * Temporary Marvell 6145 hack: PATA port presence
723 * is asserted through the standard AHCI port
724 * presence register, as bit 4 (counting from 0)
726 if (hpriv
->flags
& AHCI_HFLAG_MV_PATA
) {
727 if (pdev
->device
== 0x6121)
731 dev_printk(KERN_ERR
, &pdev
->dev
,
732 "MV_AHCI HACK: port_map %x -> %x\n",
739 /* cross check port_map and cap.n_ports */
743 for (i
= 0; i
< AHCI_MAX_PORTS
; i
++)
744 if (port_map
& (1 << i
))
747 /* If PI has more ports than n_ports, whine, clear
748 * port_map and let it be generated from n_ports.
750 if (map_ports
> ahci_nr_ports(cap
)) {
751 dev_printk(KERN_WARNING
, &pdev
->dev
,
752 "implemented port map (0x%x) contains more "
753 "ports than nr_ports (%u), using nr_ports\n",
754 port_map
, ahci_nr_ports(cap
));
759 /* fabricate port_map from cap.nr_ports */
761 port_map
= (1 << ahci_nr_ports(cap
)) - 1;
762 dev_printk(KERN_WARNING
, &pdev
->dev
,
763 "forcing PORTS_IMPL to 0x%x\n", port_map
);
765 /* write the fixed up value to the PI register */
766 hpriv
->saved_port_map
= port_map
;
769 /* record values to use during operation */
771 hpriv
->port_map
= port_map
;
775 * ahci_restore_initial_config - Restore initial config
776 * @host: target ATA host
778 * Restore initial config stored by ahci_save_initial_config().
783 static void ahci_restore_initial_config(struct ata_host
*host
)
785 struct ahci_host_priv
*hpriv
= host
->private_data
;
786 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
788 writel(hpriv
->saved_cap
, mmio
+ HOST_CAP
);
789 writel(hpriv
->saved_port_map
, mmio
+ HOST_PORTS_IMPL
);
790 (void) readl(mmio
+ HOST_PORTS_IMPL
); /* flush */
793 static unsigned ahci_scr_offset(struct ata_port
*ap
, unsigned int sc_reg
)
795 static const int offset
[] = {
796 [SCR_STATUS
] = PORT_SCR_STAT
,
797 [SCR_CONTROL
] = PORT_SCR_CTL
,
798 [SCR_ERROR
] = PORT_SCR_ERR
,
799 [SCR_ACTIVE
] = PORT_SCR_ACT
,
800 [SCR_NOTIFICATION
] = PORT_SCR_NTF
,
802 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
804 if (sc_reg
< ARRAY_SIZE(offset
) &&
805 (sc_reg
!= SCR_NOTIFICATION
|| (hpriv
->cap
& HOST_CAP_SNTF
)))
806 return offset
[sc_reg
];
810 static int ahci_scr_read(struct ata_port
*ap
, unsigned int sc_reg
, u32
*val
)
812 void __iomem
*port_mmio
= ahci_port_base(ap
);
813 int offset
= ahci_scr_offset(ap
, sc_reg
);
816 *val
= readl(port_mmio
+ offset
);
822 static int ahci_scr_write(struct ata_port
*ap
, unsigned int sc_reg
, u32 val
)
824 void __iomem
*port_mmio
= ahci_port_base(ap
);
825 int offset
= ahci_scr_offset(ap
, sc_reg
);
828 writel(val
, port_mmio
+ offset
);
834 static void ahci_start_engine(struct ata_port
*ap
)
836 void __iomem
*port_mmio
= ahci_port_base(ap
);
840 tmp
= readl(port_mmio
+ PORT_CMD
);
841 tmp
|= PORT_CMD_START
;
842 writel(tmp
, port_mmio
+ PORT_CMD
);
843 readl(port_mmio
+ PORT_CMD
); /* flush */
846 static int ahci_stop_engine(struct ata_port
*ap
)
848 void __iomem
*port_mmio
= ahci_port_base(ap
);
851 tmp
= readl(port_mmio
+ PORT_CMD
);
853 /* check if the HBA is idle */
854 if ((tmp
& (PORT_CMD_START
| PORT_CMD_LIST_ON
)) == 0)
857 /* setting HBA to idle */
858 tmp
&= ~PORT_CMD_START
;
859 writel(tmp
, port_mmio
+ PORT_CMD
);
861 /* wait for engine to stop. This could be as long as 500 msec */
862 tmp
= ata_wait_register(port_mmio
+ PORT_CMD
,
863 PORT_CMD_LIST_ON
, PORT_CMD_LIST_ON
, 1, 500);
864 if (tmp
& PORT_CMD_LIST_ON
)
870 static void ahci_start_fis_rx(struct ata_port
*ap
)
872 void __iomem
*port_mmio
= ahci_port_base(ap
);
873 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
874 struct ahci_port_priv
*pp
= ap
->private_data
;
877 /* set FIS registers */
878 if (hpriv
->cap
& HOST_CAP_64
)
879 writel((pp
->cmd_slot_dma
>> 16) >> 16,
880 port_mmio
+ PORT_LST_ADDR_HI
);
881 writel(pp
->cmd_slot_dma
& 0xffffffff, port_mmio
+ PORT_LST_ADDR
);
883 if (hpriv
->cap
& HOST_CAP_64
)
884 writel((pp
->rx_fis_dma
>> 16) >> 16,
885 port_mmio
+ PORT_FIS_ADDR_HI
);
886 writel(pp
->rx_fis_dma
& 0xffffffff, port_mmio
+ PORT_FIS_ADDR
);
888 /* enable FIS reception */
889 tmp
= readl(port_mmio
+ PORT_CMD
);
890 tmp
|= PORT_CMD_FIS_RX
;
891 writel(tmp
, port_mmio
+ PORT_CMD
);
894 readl(port_mmio
+ PORT_CMD
);
897 static int ahci_stop_fis_rx(struct ata_port
*ap
)
899 void __iomem
*port_mmio
= ahci_port_base(ap
);
902 /* disable FIS reception */
903 tmp
= readl(port_mmio
+ PORT_CMD
);
904 tmp
&= ~PORT_CMD_FIS_RX
;
905 writel(tmp
, port_mmio
+ PORT_CMD
);
907 /* wait for completion, spec says 500ms, give it 1000 */
908 tmp
= ata_wait_register(port_mmio
+ PORT_CMD
, PORT_CMD_FIS_ON
,
909 PORT_CMD_FIS_ON
, 10, 1000);
910 if (tmp
& PORT_CMD_FIS_ON
)
916 static void ahci_power_up(struct ata_port
*ap
)
918 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
919 void __iomem
*port_mmio
= ahci_port_base(ap
);
922 cmd
= readl(port_mmio
+ PORT_CMD
) & ~PORT_CMD_ICC_MASK
;
925 if (hpriv
->cap
& HOST_CAP_SSS
) {
926 cmd
|= PORT_CMD_SPIN_UP
;
927 writel(cmd
, port_mmio
+ PORT_CMD
);
931 writel(cmd
| PORT_CMD_ICC_ACTIVE
, port_mmio
+ PORT_CMD
);
934 static void ahci_disable_alpm(struct ata_port
*ap
)
936 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
937 void __iomem
*port_mmio
= ahci_port_base(ap
);
939 struct ahci_port_priv
*pp
= ap
->private_data
;
941 /* IPM bits should be disabled by libata-core */
942 /* get the existing command bits */
943 cmd
= readl(port_mmio
+ PORT_CMD
);
945 /* disable ALPM and ASP */
946 cmd
&= ~PORT_CMD_ASP
;
947 cmd
&= ~PORT_CMD_ALPE
;
949 /* force the interface back to active */
950 cmd
|= PORT_CMD_ICC_ACTIVE
;
952 /* write out new cmd value */
953 writel(cmd
, port_mmio
+ PORT_CMD
);
954 cmd
= readl(port_mmio
+ PORT_CMD
);
956 /* wait 10ms to be sure we've come out of any low power state */
959 /* clear out any PhyRdy stuff from interrupt status */
960 writel(PORT_IRQ_PHYRDY
, port_mmio
+ PORT_IRQ_STAT
);
962 /* go ahead and clean out PhyRdy Change from Serror too */
963 ahci_scr_write(ap
, SCR_ERROR
, ((1 << 16) | (1 << 18)));
966 * Clear flag to indicate that we should ignore all PhyRdy
969 hpriv
->flags
&= ~AHCI_HFLAG_NO_HOTPLUG
;
972 * Enable interrupts on Phy Ready.
974 pp
->intr_mask
|= PORT_IRQ_PHYRDY
;
975 writel(pp
->intr_mask
, port_mmio
+ PORT_IRQ_MASK
);
978 * don't change the link pm policy - we can be called
979 * just to turn of link pm temporarily
983 static int ahci_enable_alpm(struct ata_port
*ap
,
986 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
987 void __iomem
*port_mmio
= ahci_port_base(ap
);
989 struct ahci_port_priv
*pp
= ap
->private_data
;
992 /* Make sure the host is capable of link power management */
993 if (!(hpriv
->cap
& HOST_CAP_ALPM
))
997 case MAX_PERFORMANCE
:
1000 * if we came here with NOT_AVAILABLE,
1001 * it just means this is the first time we
1002 * have tried to enable - default to max performance,
1003 * and let the user go to lower power modes on request.
1005 ahci_disable_alpm(ap
);
1008 /* configure HBA to enter SLUMBER */
1012 /* configure HBA to enter PARTIAL */
1020 * Disable interrupts on Phy Ready. This keeps us from
1021 * getting woken up due to spurious phy ready interrupts
1022 * TBD - Hot plug should be done via polling now, is
1023 * that even supported?
1025 pp
->intr_mask
&= ~PORT_IRQ_PHYRDY
;
1026 writel(pp
->intr_mask
, port_mmio
+ PORT_IRQ_MASK
);
1029 * Set a flag to indicate that we should ignore all PhyRdy
1030 * state changes since these can happen now whenever we
1033 hpriv
->flags
|= AHCI_HFLAG_NO_HOTPLUG
;
1035 /* get the existing command bits */
1036 cmd
= readl(port_mmio
+ PORT_CMD
);
1039 * Set ASP based on Policy
1044 * Setting this bit will instruct the HBA to aggressively
1045 * enter a lower power link state when it's appropriate and
1046 * based on the value set above for ASP
1048 cmd
|= PORT_CMD_ALPE
;
1050 /* write out new cmd value */
1051 writel(cmd
, port_mmio
+ PORT_CMD
);
1052 cmd
= readl(port_mmio
+ PORT_CMD
);
1054 /* IPM bits should be set by libata-core */
1059 static void ahci_power_down(struct ata_port
*ap
)
1061 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
1062 void __iomem
*port_mmio
= ahci_port_base(ap
);
1065 if (!(hpriv
->cap
& HOST_CAP_SSS
))
1068 /* put device into listen mode, first set PxSCTL.DET to 0 */
1069 scontrol
= readl(port_mmio
+ PORT_SCR_CTL
);
1071 writel(scontrol
, port_mmio
+ PORT_SCR_CTL
);
1073 /* then set PxCMD.SUD to 0 */
1074 cmd
= readl(port_mmio
+ PORT_CMD
) & ~PORT_CMD_ICC_MASK
;
1075 cmd
&= ~PORT_CMD_SPIN_UP
;
1076 writel(cmd
, port_mmio
+ PORT_CMD
);
1080 static void ahci_start_port(struct ata_port
*ap
)
1082 struct ahci_port_priv
*pp
= ap
->private_data
;
1083 struct ata_link
*link
;
1084 struct ahci_em_priv
*emp
;
1086 /* enable FIS reception */
1087 ahci_start_fis_rx(ap
);
1090 ahci_start_engine(ap
);
1093 if (ap
->flags
& ATA_FLAG_EM
) {
1094 ata_port_for_each_link(link
, ap
) {
1095 emp
= &pp
->em_priv
[link
->pmp
];
1096 ahci_transmit_led_message(ap
, emp
->led_state
, 4);
1100 if (ap
->flags
& ATA_FLAG_SW_ACTIVITY
)
1101 ata_port_for_each_link(link
, ap
)
1102 ahci_init_sw_activity(link
);
1106 static int ahci_deinit_port(struct ata_port
*ap
, const char **emsg
)
1111 rc
= ahci_stop_engine(ap
);
1113 *emsg
= "failed to stop engine";
1117 /* disable FIS reception */
1118 rc
= ahci_stop_fis_rx(ap
);
1120 *emsg
= "failed stop FIS RX";
1127 static int ahci_reset_controller(struct ata_host
*host
)
1129 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
1130 struct ahci_host_priv
*hpriv
= host
->private_data
;
1131 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
1134 /* we must be in AHCI mode, before using anything
1135 * AHCI-specific, such as HOST_RESET.
1137 ahci_enable_ahci(mmio
);
1139 /* global controller reset */
1140 if (!ahci_skip_host_reset
) {
1141 tmp
= readl(mmio
+ HOST_CTL
);
1142 if ((tmp
& HOST_RESET
) == 0) {
1143 writel(tmp
| HOST_RESET
, mmio
+ HOST_CTL
);
1144 readl(mmio
+ HOST_CTL
); /* flush */
1148 * to perform host reset, OS should set HOST_RESET
1149 * and poll until this bit is read to be "0".
1150 * reset must complete within 1 second, or
1151 * the hardware should be considered fried.
1153 tmp
= ata_wait_register(mmio
+ HOST_CTL
, HOST_RESET
,
1154 HOST_RESET
, 10, 1000);
1156 if (tmp
& HOST_RESET
) {
1157 dev_printk(KERN_ERR
, host
->dev
,
1158 "controller reset failed (0x%x)\n", tmp
);
1162 /* turn on AHCI mode */
1163 ahci_enable_ahci(mmio
);
1165 /* Some registers might be cleared on reset. Restore
1168 ahci_restore_initial_config(host
);
1170 dev_printk(KERN_INFO
, host
->dev
,
1171 "skipping global host reset\n");
1173 if (pdev
->vendor
== PCI_VENDOR_ID_INTEL
) {
1177 pci_read_config_word(pdev
, 0x92, &tmp16
);
1178 if ((tmp16
& hpriv
->port_map
) != hpriv
->port_map
) {
1179 tmp16
|= hpriv
->port_map
;
1180 pci_write_config_word(pdev
, 0x92, tmp16
);
1187 static void ahci_sw_activity(struct ata_link
*link
)
1189 struct ata_port
*ap
= link
->ap
;
1190 struct ahci_port_priv
*pp
= ap
->private_data
;
1191 struct ahci_em_priv
*emp
= &pp
->em_priv
[link
->pmp
];
1193 if (!(link
->flags
& ATA_LFLAG_SW_ACTIVITY
))
1197 if (!timer_pending(&emp
->timer
))
1198 mod_timer(&emp
->timer
, jiffies
+ msecs_to_jiffies(10));
1201 static void ahci_sw_activity_blink(unsigned long arg
)
1203 struct ata_link
*link
= (struct ata_link
*)arg
;
1204 struct ata_port
*ap
= link
->ap
;
1205 struct ahci_port_priv
*pp
= ap
->private_data
;
1206 struct ahci_em_priv
*emp
= &pp
->em_priv
[link
->pmp
];
1207 unsigned long led_message
= emp
->led_state
;
1208 u32 activity_led_state
;
1210 led_message
&= 0xffff0000;
1211 led_message
|= ap
->port_no
| (link
->pmp
<< 8);
1213 /* check to see if we've had activity. If so,
1214 * toggle state of LED and reset timer. If not,
1215 * turn LED to desired idle state.
1217 if (emp
->saved_activity
!= emp
->activity
) {
1218 emp
->saved_activity
= emp
->activity
;
1219 /* get the current LED state */
1220 activity_led_state
= led_message
& 0x00010000;
1222 if (activity_led_state
)
1223 activity_led_state
= 0;
1225 activity_led_state
= 1;
1227 /* clear old state */
1228 led_message
&= 0xfff8ffff;
1231 led_message
|= (activity_led_state
<< 16);
1232 mod_timer(&emp
->timer
, jiffies
+ msecs_to_jiffies(100));
1234 /* switch to idle */
1235 led_message
&= 0xfff8ffff;
1236 if (emp
->blink_policy
== BLINK_OFF
)
1237 led_message
|= (1 << 16);
1239 ahci_transmit_led_message(ap
, led_message
, 4);
1242 static void ahci_init_sw_activity(struct ata_link
*link
)
1244 struct ata_port
*ap
= link
->ap
;
1245 struct ahci_port_priv
*pp
= ap
->private_data
;
1246 struct ahci_em_priv
*emp
= &pp
->em_priv
[link
->pmp
];
1248 /* init activity stats, setup timer */
1249 emp
->saved_activity
= emp
->activity
= 0;
1250 setup_timer(&emp
->timer
, ahci_sw_activity_blink
, (unsigned long)link
);
1252 /* check our blink policy and set flag for link if it's enabled */
1253 if (emp
->blink_policy
)
1254 link
->flags
|= ATA_LFLAG_SW_ACTIVITY
;
1257 static int ahci_reset_em(struct ata_host
*host
)
1259 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
1262 em_ctl
= readl(mmio
+ HOST_EM_CTL
);
1263 if ((em_ctl
& EM_CTL_TM
) || (em_ctl
& EM_CTL_RST
))
1266 writel(em_ctl
| EM_CTL_RST
, mmio
+ HOST_EM_CTL
);
1270 static ssize_t
ahci_transmit_led_message(struct ata_port
*ap
, u32 state
,
1273 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
1274 struct ahci_port_priv
*pp
= ap
->private_data
;
1275 void __iomem
*mmio
= ap
->host
->iomap
[AHCI_PCI_BAR
];
1277 u32 message
[] = {0, 0};
1278 unsigned long flags
;
1280 struct ahci_em_priv
*emp
;
1282 /* get the slot number from the message */
1283 pmp
= (state
& 0x0000ff00) >> 8;
1284 if (pmp
< MAX_SLOTS
)
1285 emp
= &pp
->em_priv
[pmp
];
1289 spin_lock_irqsave(ap
->lock
, flags
);
1292 * if we are still busy transmitting a previous message,
1295 em_ctl
= readl(mmio
+ HOST_EM_CTL
);
1296 if (em_ctl
& EM_CTL_TM
) {
1297 spin_unlock_irqrestore(ap
->lock
, flags
);
1302 * create message header - this is all zero except for
1303 * the message size, which is 4 bytes.
1305 message
[0] |= (4 << 8);
1307 /* ignore 0:4 of byte zero, fill in port info yourself */
1308 message
[1] = ((state
& 0xfffffff0) | ap
->port_no
);
1310 /* write message to EM_LOC */
1311 writel(message
[0], mmio
+ hpriv
->em_loc
);
1312 writel(message
[1], mmio
+ hpriv
->em_loc
+4);
1314 /* save off new led state for port/slot */
1315 emp
->led_state
= message
[1];
1318 * tell hardware to transmit the message
1320 writel(em_ctl
| EM_CTL_TM
, mmio
+ HOST_EM_CTL
);
1322 spin_unlock_irqrestore(ap
->lock
, flags
);
1326 static ssize_t
ahci_led_show(struct ata_port
*ap
, char *buf
)
1328 struct ahci_port_priv
*pp
= ap
->private_data
;
1329 struct ata_link
*link
;
1330 struct ahci_em_priv
*emp
;
1333 ata_port_for_each_link(link
, ap
) {
1334 emp
= &pp
->em_priv
[link
->pmp
];
1335 rc
+= sprintf(buf
, "%lx\n", emp
->led_state
);
1340 static ssize_t
ahci_led_store(struct ata_port
*ap
, const char *buf
,
1345 struct ahci_port_priv
*pp
= ap
->private_data
;
1346 struct ahci_em_priv
*emp
;
1348 state
= simple_strtoul(buf
, NULL
, 0);
1350 /* get the slot number from the message */
1351 pmp
= (state
& 0x0000ff00) >> 8;
1352 if (pmp
< MAX_SLOTS
)
1353 emp
= &pp
->em_priv
[pmp
];
1357 /* mask off the activity bits if we are in sw_activity
1358 * mode, user should turn off sw_activity before setting
1359 * activity led through em_message
1361 if (emp
->blink_policy
)
1362 state
&= 0xfff8ffff;
1364 return ahci_transmit_led_message(ap
, state
, size
);
1367 static ssize_t
ahci_activity_store(struct ata_device
*dev
, enum sw_activity val
)
1369 struct ata_link
*link
= dev
->link
;
1370 struct ata_port
*ap
= link
->ap
;
1371 struct ahci_port_priv
*pp
= ap
->private_data
;
1372 struct ahci_em_priv
*emp
= &pp
->em_priv
[link
->pmp
];
1373 u32 port_led_state
= emp
->led_state
;
1375 /* save the desired Activity LED behavior */
1378 link
->flags
&= ~(ATA_LFLAG_SW_ACTIVITY
);
1380 /* set the LED to OFF */
1381 port_led_state
&= 0xfff80000;
1382 port_led_state
|= (ap
->port_no
| (link
->pmp
<< 8));
1383 ahci_transmit_led_message(ap
, port_led_state
, 4);
1385 link
->flags
|= ATA_LFLAG_SW_ACTIVITY
;
1386 if (val
== BLINK_OFF
) {
1387 /* set LED to ON for idle */
1388 port_led_state
&= 0xfff80000;
1389 port_led_state
|= (ap
->port_no
| (link
->pmp
<< 8));
1390 port_led_state
|= 0x00010000; /* check this */
1391 ahci_transmit_led_message(ap
, port_led_state
, 4);
1394 emp
->blink_policy
= val
;
1398 static ssize_t
ahci_activity_show(struct ata_device
*dev
, char *buf
)
1400 struct ata_link
*link
= dev
->link
;
1401 struct ata_port
*ap
= link
->ap
;
1402 struct ahci_port_priv
*pp
= ap
->private_data
;
1403 struct ahci_em_priv
*emp
= &pp
->em_priv
[link
->pmp
];
1405 /* display the saved value of activity behavior for this
1408 return sprintf(buf
, "%d\n", emp
->blink_policy
);
1411 static void ahci_port_init(struct pci_dev
*pdev
, struct ata_port
*ap
,
1412 int port_no
, void __iomem
*mmio
,
1413 void __iomem
*port_mmio
)
1415 const char *emsg
= NULL
;
1419 /* make sure port is not active */
1420 rc
= ahci_deinit_port(ap
, &emsg
);
1422 dev_printk(KERN_WARNING
, &pdev
->dev
,
1423 "%s (%d)\n", emsg
, rc
);
1426 tmp
= readl(port_mmio
+ PORT_SCR_ERR
);
1427 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp
);
1428 writel(tmp
, port_mmio
+ PORT_SCR_ERR
);
1430 /* clear port IRQ */
1431 tmp
= readl(port_mmio
+ PORT_IRQ_STAT
);
1432 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp
);
1434 writel(tmp
, port_mmio
+ PORT_IRQ_STAT
);
1436 writel(1 << port_no
, mmio
+ HOST_IRQ_STAT
);
1439 static void ahci_init_controller(struct ata_host
*host
)
1441 struct ahci_host_priv
*hpriv
= host
->private_data
;
1442 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
1443 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
1445 void __iomem
*port_mmio
;
1449 if (hpriv
->flags
& AHCI_HFLAG_MV_PATA
) {
1450 if (pdev
->device
== 0x6121)
1454 port_mmio
= __ahci_port_base(host
, mv
);
1456 writel(0, port_mmio
+ PORT_IRQ_MASK
);
1458 /* clear port IRQ */
1459 tmp
= readl(port_mmio
+ PORT_IRQ_STAT
);
1460 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp
);
1462 writel(tmp
, port_mmio
+ PORT_IRQ_STAT
);
1465 for (i
= 0; i
< host
->n_ports
; i
++) {
1466 struct ata_port
*ap
= host
->ports
[i
];
1468 port_mmio
= ahci_port_base(ap
);
1469 if (ata_port_is_dummy(ap
))
1472 ahci_port_init(pdev
, ap
, i
, mmio
, port_mmio
);
1475 tmp
= readl(mmio
+ HOST_CTL
);
1476 VPRINTK("HOST_CTL 0x%x\n", tmp
);
1477 writel(tmp
| HOST_IRQ_EN
, mmio
+ HOST_CTL
);
1478 tmp
= readl(mmio
+ HOST_CTL
);
1479 VPRINTK("HOST_CTL 0x%x\n", tmp
);
1482 static void ahci_dev_config(struct ata_device
*dev
)
1484 struct ahci_host_priv
*hpriv
= dev
->link
->ap
->host
->private_data
;
1486 if (hpriv
->flags
& AHCI_HFLAG_SECT255
) {
1487 dev
->max_sectors
= 255;
1488 ata_dev_printk(dev
, KERN_INFO
,
1489 "SB600 AHCI: limiting to 255 sectors per cmd\n");
1493 static unsigned int ahci_dev_classify(struct ata_port
*ap
)
1495 void __iomem
*port_mmio
= ahci_port_base(ap
);
1496 struct ata_taskfile tf
;
1499 tmp
= readl(port_mmio
+ PORT_SIG
);
1500 tf
.lbah
= (tmp
>> 24) & 0xff;
1501 tf
.lbam
= (tmp
>> 16) & 0xff;
1502 tf
.lbal
= (tmp
>> 8) & 0xff;
1503 tf
.nsect
= (tmp
) & 0xff;
1505 return ata_dev_classify(&tf
);
1508 static void ahci_fill_cmd_slot(struct ahci_port_priv
*pp
, unsigned int tag
,
1511 dma_addr_t cmd_tbl_dma
;
1513 cmd_tbl_dma
= pp
->cmd_tbl_dma
+ tag
* AHCI_CMD_TBL_SZ
;
1515 pp
->cmd_slot
[tag
].opts
= cpu_to_le32(opts
);
1516 pp
->cmd_slot
[tag
].status
= 0;
1517 pp
->cmd_slot
[tag
].tbl_addr
= cpu_to_le32(cmd_tbl_dma
& 0xffffffff);
1518 pp
->cmd_slot
[tag
].tbl_addr_hi
= cpu_to_le32((cmd_tbl_dma
>> 16) >> 16);
1521 static int ahci_kick_engine(struct ata_port
*ap
, int force_restart
)
1523 void __iomem
*port_mmio
= ahci_port_base(ap
);
1524 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
1525 u8 status
= readl(port_mmio
+ PORT_TFDATA
) & 0xFF;
1529 /* do we need to kick the port? */
1530 busy
= status
& (ATA_BUSY
| ATA_DRQ
);
1531 if (!busy
&& !force_restart
)
1535 rc
= ahci_stop_engine(ap
);
1539 /* need to do CLO? */
1545 if (!(hpriv
->cap
& HOST_CAP_CLO
)) {
1551 tmp
= readl(port_mmio
+ PORT_CMD
);
1552 tmp
|= PORT_CMD_CLO
;
1553 writel(tmp
, port_mmio
+ PORT_CMD
);
1556 tmp
= ata_wait_register(port_mmio
+ PORT_CMD
,
1557 PORT_CMD_CLO
, PORT_CMD_CLO
, 1, 500);
1558 if (tmp
& PORT_CMD_CLO
)
1561 /* restart engine */
1563 ahci_start_engine(ap
);
1567 static int ahci_exec_polled_cmd(struct ata_port
*ap
, int pmp
,
1568 struct ata_taskfile
*tf
, int is_cmd
, u16 flags
,
1569 unsigned long timeout_msec
)
1571 const u32 cmd_fis_len
= 5; /* five dwords */
1572 struct ahci_port_priv
*pp
= ap
->private_data
;
1573 void __iomem
*port_mmio
= ahci_port_base(ap
);
1574 u8
*fis
= pp
->cmd_tbl
;
1577 /* prep the command */
1578 ata_tf_to_fis(tf
, pmp
, is_cmd
, fis
);
1579 ahci_fill_cmd_slot(pp
, 0, cmd_fis_len
| flags
| (pmp
<< 12));
1582 writel(1, port_mmio
+ PORT_CMD_ISSUE
);
1585 tmp
= ata_wait_register(port_mmio
+ PORT_CMD_ISSUE
, 0x1, 0x1,
1588 ahci_kick_engine(ap
, 1);
1592 readl(port_mmio
+ PORT_CMD_ISSUE
); /* flush */
1597 static int ahci_do_softreset(struct ata_link
*link
, unsigned int *class,
1598 int pmp
, unsigned long deadline
,
1599 int (*check_ready
)(struct ata_link
*link
))
1601 struct ata_port
*ap
= link
->ap
;
1602 const char *reason
= NULL
;
1603 unsigned long now
, msecs
;
1604 struct ata_taskfile tf
;
1609 /* prepare for SRST (AHCI-1.1 10.4.1) */
1610 rc
= ahci_kick_engine(ap
, 1);
1611 if (rc
&& rc
!= -EOPNOTSUPP
)
1612 ata_link_printk(link
, KERN_WARNING
,
1613 "failed to reset engine (errno=%d)\n", rc
);
1615 ata_tf_init(link
->device
, &tf
);
1617 /* issue the first D2H Register FIS */
1620 if (time_after(now
, deadline
))
1621 msecs
= jiffies_to_msecs(deadline
- now
);
1624 if (ahci_exec_polled_cmd(ap
, pmp
, &tf
, 0,
1625 AHCI_CMD_RESET
| AHCI_CMD_CLR_BUSY
, msecs
)) {
1627 reason
= "1st FIS failed";
1631 /* spec says at least 5us, but be generous and sleep for 1ms */
1634 /* issue the second D2H Register FIS */
1635 tf
.ctl
&= ~ATA_SRST
;
1636 ahci_exec_polled_cmd(ap
, pmp
, &tf
, 0, 0, 0);
1638 /* wait for link to become ready */
1639 rc
= ata_wait_after_reset(link
, deadline
, check_ready
);
1640 /* link occupied, -ENODEV too is an error */
1642 reason
= "device not ready";
1645 *class = ahci_dev_classify(ap
);
1647 DPRINTK("EXIT, class=%u\n", *class);
1651 ata_link_printk(link
, KERN_ERR
, "softreset failed (%s)\n", reason
);
1655 static int ahci_check_ready(struct ata_link
*link
)
1657 void __iomem
*port_mmio
= ahci_port_base(link
->ap
);
1658 u8 status
= readl(port_mmio
+ PORT_TFDATA
) & 0xFF;
1660 return ata_check_ready(status
);
1663 static int ahci_softreset(struct ata_link
*link
, unsigned int *class,
1664 unsigned long deadline
)
1666 int pmp
= sata_srst_pmp(link
);
1670 return ahci_do_softreset(link
, class, pmp
, deadline
, ahci_check_ready
);
1673 static int ahci_sb600_check_ready(struct ata_link
*link
)
1675 void __iomem
*port_mmio
= ahci_port_base(link
->ap
);
1676 u8 status
= readl(port_mmio
+ PORT_TFDATA
) & 0xFF;
1677 u32 irq_status
= readl(port_mmio
+ PORT_IRQ_STAT
);
1680 * There is no need to check TFDATA if BAD PMP is found due to HW bug,
1681 * which can save timeout delay.
1683 if (irq_status
& PORT_IRQ_BAD_PMP
)
1686 return ata_check_ready(status
);
1689 static int ahci_sb600_softreset(struct ata_link
*link
, unsigned int *class,
1690 unsigned long deadline
)
1692 struct ata_port
*ap
= link
->ap
;
1693 void __iomem
*port_mmio
= ahci_port_base(ap
);
1694 int pmp
= sata_srst_pmp(link
);
1700 rc
= ahci_do_softreset(link
, class, pmp
, deadline
,
1701 ahci_sb600_check_ready
);
1704 * Soft reset fails on some ATI chips with IPMS set when PMP
1705 * is enabled but SATA HDD/ODD is connected to SATA port,
1706 * do soft reset again to port 0.
1709 irq_sts
= readl(port_mmio
+ PORT_IRQ_STAT
);
1710 if (irq_sts
& PORT_IRQ_BAD_PMP
) {
1711 ata_link_printk(link
, KERN_WARNING
,
1712 "failed due to HW bug, retry pmp=0\n");
1713 rc
= ahci_do_softreset(link
, class, 0, deadline
,
1721 static int ahci_hardreset(struct ata_link
*link
, unsigned int *class,
1722 unsigned long deadline
)
1724 const unsigned long *timing
= sata_ehc_deb_timing(&link
->eh_context
);
1725 struct ata_port
*ap
= link
->ap
;
1726 struct ahci_port_priv
*pp
= ap
->private_data
;
1727 u8
*d2h_fis
= pp
->rx_fis
+ RX_FIS_D2H_REG
;
1728 struct ata_taskfile tf
;
1734 ahci_stop_engine(ap
);
1736 /* clear D2H reception area to properly wait for D2H FIS */
1737 ata_tf_init(link
->device
, &tf
);
1739 ata_tf_to_fis(&tf
, 0, 0, d2h_fis
);
1741 rc
= sata_link_hardreset(link
, timing
, deadline
, &online
,
1744 ahci_start_engine(ap
);
1747 *class = ahci_dev_classify(ap
);
1749 DPRINTK("EXIT, rc=%d, class=%u\n", rc
, *class);
1753 static int ahci_vt8251_hardreset(struct ata_link
*link
, unsigned int *class,
1754 unsigned long deadline
)
1756 struct ata_port
*ap
= link
->ap
;
1762 ahci_stop_engine(ap
);
1764 rc
= sata_link_hardreset(link
, sata_ehc_deb_timing(&link
->eh_context
),
1765 deadline
, &online
, NULL
);
1767 ahci_start_engine(ap
);
1769 DPRINTK("EXIT, rc=%d, class=%u\n", rc
, *class);
1771 /* vt8251 doesn't clear BSY on signature FIS reception,
1772 * request follow-up softreset.
1774 return online
? -EAGAIN
: rc
;
1777 static int ahci_p5wdh_hardreset(struct ata_link
*link
, unsigned int *class,
1778 unsigned long deadline
)
1780 struct ata_port
*ap
= link
->ap
;
1781 struct ahci_port_priv
*pp
= ap
->private_data
;
1782 u8
*d2h_fis
= pp
->rx_fis
+ RX_FIS_D2H_REG
;
1783 struct ata_taskfile tf
;
1787 ahci_stop_engine(ap
);
1789 /* clear D2H reception area to properly wait for D2H FIS */
1790 ata_tf_init(link
->device
, &tf
);
1792 ata_tf_to_fis(&tf
, 0, 0, d2h_fis
);
1794 rc
= sata_link_hardreset(link
, sata_ehc_deb_timing(&link
->eh_context
),
1795 deadline
, &online
, NULL
);
1797 ahci_start_engine(ap
);
1799 /* The pseudo configuration device on SIMG4726 attached to
1800 * ASUS P5W-DH Deluxe doesn't send signature FIS after
1801 * hardreset if no device is attached to the first downstream
1802 * port && the pseudo device locks up on SRST w/ PMP==0. To
1803 * work around this, wait for !BSY only briefly. If BSY isn't
1804 * cleared, perform CLO and proceed to IDENTIFY (achieved by
1805 * ATA_LFLAG_NO_SRST and ATA_LFLAG_ASSUME_ATA).
1807 * Wait for two seconds. Devices attached to downstream port
1808 * which can't process the following IDENTIFY after this will
1809 * have to be reset again. For most cases, this should
1810 * suffice while making probing snappish enough.
1813 rc
= ata_wait_after_reset(link
, jiffies
+ 2 * HZ
,
1816 ahci_kick_engine(ap
, 0);
1821 static void ahci_postreset(struct ata_link
*link
, unsigned int *class)
1823 struct ata_port
*ap
= link
->ap
;
1824 void __iomem
*port_mmio
= ahci_port_base(ap
);
1827 ata_std_postreset(link
, class);
1829 /* Make sure port's ATAPI bit is set appropriately */
1830 new_tmp
= tmp
= readl(port_mmio
+ PORT_CMD
);
1831 if (*class == ATA_DEV_ATAPI
)
1832 new_tmp
|= PORT_CMD_ATAPI
;
1834 new_tmp
&= ~PORT_CMD_ATAPI
;
1835 if (new_tmp
!= tmp
) {
1836 writel(new_tmp
, port_mmio
+ PORT_CMD
);
1837 readl(port_mmio
+ PORT_CMD
); /* flush */
1841 static unsigned int ahci_fill_sg(struct ata_queued_cmd
*qc
, void *cmd_tbl
)
1843 struct scatterlist
*sg
;
1844 struct ahci_sg
*ahci_sg
= cmd_tbl
+ AHCI_CMD_TBL_HDR_SZ
;
1850 * Next, the S/G list.
1852 for_each_sg(qc
->sg
, sg
, qc
->n_elem
, si
) {
1853 dma_addr_t addr
= sg_dma_address(sg
);
1854 u32 sg_len
= sg_dma_len(sg
);
1856 ahci_sg
[si
].addr
= cpu_to_le32(addr
& 0xffffffff);
1857 ahci_sg
[si
].addr_hi
= cpu_to_le32((addr
>> 16) >> 16);
1858 ahci_sg
[si
].flags_size
= cpu_to_le32(sg_len
- 1);
1864 static void ahci_qc_prep(struct ata_queued_cmd
*qc
)
1866 struct ata_port
*ap
= qc
->ap
;
1867 struct ahci_port_priv
*pp
= ap
->private_data
;
1868 int is_atapi
= ata_is_atapi(qc
->tf
.protocol
);
1871 const u32 cmd_fis_len
= 5; /* five dwords */
1872 unsigned int n_elem
;
1875 * Fill in command table information. First, the header,
1876 * a SATA Register - Host to Device command FIS.
1878 cmd_tbl
= pp
->cmd_tbl
+ qc
->tag
* AHCI_CMD_TBL_SZ
;
1880 ata_tf_to_fis(&qc
->tf
, qc
->dev
->link
->pmp
, 1, cmd_tbl
);
1882 memset(cmd_tbl
+ AHCI_CMD_TBL_CDB
, 0, 32);
1883 memcpy(cmd_tbl
+ AHCI_CMD_TBL_CDB
, qc
->cdb
, qc
->dev
->cdb_len
);
1887 if (qc
->flags
& ATA_QCFLAG_DMAMAP
)
1888 n_elem
= ahci_fill_sg(qc
, cmd_tbl
);
1891 * Fill in command slot information.
1893 opts
= cmd_fis_len
| n_elem
<< 16 | (qc
->dev
->link
->pmp
<< 12);
1894 if (qc
->tf
.flags
& ATA_TFLAG_WRITE
)
1895 opts
|= AHCI_CMD_WRITE
;
1897 opts
|= AHCI_CMD_ATAPI
| AHCI_CMD_PREFETCH
;
1899 ahci_fill_cmd_slot(pp
, qc
->tag
, opts
);
1902 static void ahci_error_intr(struct ata_port
*ap
, u32 irq_stat
)
1904 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
1905 struct ahci_port_priv
*pp
= ap
->private_data
;
1906 struct ata_eh_info
*host_ehi
= &ap
->link
.eh_info
;
1907 struct ata_link
*link
= NULL
;
1908 struct ata_queued_cmd
*active_qc
;
1909 struct ata_eh_info
*active_ehi
;
1912 /* determine active link */
1913 ata_port_for_each_link(link
, ap
)
1914 if (ata_link_active(link
))
1919 active_qc
= ata_qc_from_tag(ap
, link
->active_tag
);
1920 active_ehi
= &link
->eh_info
;
1922 /* record irq stat */
1923 ata_ehi_clear_desc(host_ehi
);
1924 ata_ehi_push_desc(host_ehi
, "irq_stat 0x%08x", irq_stat
);
1926 /* AHCI needs SError cleared; otherwise, it might lock up */
1927 ahci_scr_read(ap
, SCR_ERROR
, &serror
);
1928 ahci_scr_write(ap
, SCR_ERROR
, serror
);
1929 host_ehi
->serror
|= serror
;
1931 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
1932 if (hpriv
->flags
& AHCI_HFLAG_IGN_IRQ_IF_ERR
)
1933 irq_stat
&= ~PORT_IRQ_IF_ERR
;
1935 if (irq_stat
& PORT_IRQ_TF_ERR
) {
1936 /* If qc is active, charge it; otherwise, the active
1937 * link. There's no active qc on NCQ errors. It will
1938 * be determined by EH by reading log page 10h.
1941 active_qc
->err_mask
|= AC_ERR_DEV
;
1943 active_ehi
->err_mask
|= AC_ERR_DEV
;
1945 if (hpriv
->flags
& AHCI_HFLAG_IGN_SERR_INTERNAL
)
1946 host_ehi
->serror
&= ~SERR_INTERNAL
;
1949 if (irq_stat
& PORT_IRQ_UNK_FIS
) {
1950 u32
*unk
= (u32
*)(pp
->rx_fis
+ RX_FIS_UNK
);
1952 active_ehi
->err_mask
|= AC_ERR_HSM
;
1953 active_ehi
->action
|= ATA_EH_RESET
;
1954 ata_ehi_push_desc(active_ehi
,
1955 "unknown FIS %08x %08x %08x %08x" ,
1956 unk
[0], unk
[1], unk
[2], unk
[3]);
1959 if (sata_pmp_attached(ap
) && (irq_stat
& PORT_IRQ_BAD_PMP
)) {
1960 active_ehi
->err_mask
|= AC_ERR_HSM
;
1961 active_ehi
->action
|= ATA_EH_RESET
;
1962 ata_ehi_push_desc(active_ehi
, "incorrect PMP");
1965 if (irq_stat
& (PORT_IRQ_HBUS_ERR
| PORT_IRQ_HBUS_DATA_ERR
)) {
1966 host_ehi
->err_mask
|= AC_ERR_HOST_BUS
;
1967 host_ehi
->action
|= ATA_EH_RESET
;
1968 ata_ehi_push_desc(host_ehi
, "host bus error");
1971 if (irq_stat
& PORT_IRQ_IF_ERR
) {
1972 host_ehi
->err_mask
|= AC_ERR_ATA_BUS
;
1973 host_ehi
->action
|= ATA_EH_RESET
;
1974 ata_ehi_push_desc(host_ehi
, "interface fatal error");
1977 if (irq_stat
& (PORT_IRQ_CONNECT
| PORT_IRQ_PHYRDY
)) {
1978 ata_ehi_hotplugged(host_ehi
);
1979 ata_ehi_push_desc(host_ehi
, "%s",
1980 irq_stat
& PORT_IRQ_CONNECT
?
1981 "connection status changed" : "PHY RDY changed");
1984 /* okay, let's hand over to EH */
1986 if (irq_stat
& PORT_IRQ_FREEZE
)
1987 ata_port_freeze(ap
);
1992 static void ahci_port_intr(struct ata_port
*ap
)
1994 void __iomem
*port_mmio
= ahci_port_base(ap
);
1995 struct ata_eh_info
*ehi
= &ap
->link
.eh_info
;
1996 struct ahci_port_priv
*pp
= ap
->private_data
;
1997 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
1998 int resetting
= !!(ap
->pflags
& ATA_PFLAG_RESETTING
);
1999 u32 status
, qc_active
;
2002 status
= readl(port_mmio
+ PORT_IRQ_STAT
);
2003 writel(status
, port_mmio
+ PORT_IRQ_STAT
);
2005 /* ignore BAD_PMP while resetting */
2006 if (unlikely(resetting
))
2007 status
&= ~PORT_IRQ_BAD_PMP
;
2009 /* If we are getting PhyRdy, this is
2010 * just a power state change, we should
2011 * clear out this, plus the PhyRdy/Comm
2012 * Wake bits from Serror
2014 if ((hpriv
->flags
& AHCI_HFLAG_NO_HOTPLUG
) &&
2015 (status
& PORT_IRQ_PHYRDY
)) {
2016 status
&= ~PORT_IRQ_PHYRDY
;
2017 ahci_scr_write(ap
, SCR_ERROR
, ((1 << 16) | (1 << 18)));
2020 if (unlikely(status
& PORT_IRQ_ERROR
)) {
2021 ahci_error_intr(ap
, status
);
2025 if (status
& PORT_IRQ_SDB_FIS
) {
2026 /* If SNotification is available, leave notification
2027 * handling to sata_async_notification(). If not,
2028 * emulate it by snooping SDB FIS RX area.
2030 * Snooping FIS RX area is probably cheaper than
2031 * poking SNotification but some constrollers which
2032 * implement SNotification, ICH9 for example, don't
2033 * store AN SDB FIS into receive area.
2035 if (hpriv
->cap
& HOST_CAP_SNTF
)
2036 sata_async_notification(ap
);
2038 /* If the 'N' bit in word 0 of the FIS is set,
2039 * we just received asynchronous notification.
2040 * Tell libata about it.
2042 const __le32
*f
= pp
->rx_fis
+ RX_FIS_SDB
;
2043 u32 f0
= le32_to_cpu(f
[0]);
2046 sata_async_notification(ap
);
2050 /* pp->active_link is valid iff any command is in flight */
2051 if (ap
->qc_active
&& pp
->active_link
->sactive
)
2052 qc_active
= readl(port_mmio
+ PORT_SCR_ACT
);
2054 qc_active
= readl(port_mmio
+ PORT_CMD_ISSUE
);
2056 rc
= ata_qc_complete_multiple(ap
, qc_active
);
2058 /* while resetting, invalid completions are expected */
2059 if (unlikely(rc
< 0 && !resetting
)) {
2060 ehi
->err_mask
|= AC_ERR_HSM
;
2061 ehi
->action
|= ATA_EH_RESET
;
2062 ata_port_freeze(ap
);
2066 static irqreturn_t
ahci_interrupt(int irq
, void *dev_instance
)
2068 struct ata_host
*host
= dev_instance
;
2069 struct ahci_host_priv
*hpriv
;
2070 unsigned int i
, handled
= 0;
2072 u32 irq_stat
, irq_masked
;
2076 hpriv
= host
->private_data
;
2077 mmio
= host
->iomap
[AHCI_PCI_BAR
];
2079 /* sigh. 0xffffffff is a valid return from h/w */
2080 irq_stat
= readl(mmio
+ HOST_IRQ_STAT
);
2084 irq_masked
= irq_stat
& hpriv
->port_map
;
2086 spin_lock(&host
->lock
);
2088 for (i
= 0; i
< host
->n_ports
; i
++) {
2089 struct ata_port
*ap
;
2091 if (!(irq_masked
& (1 << i
)))
2094 ap
= host
->ports
[i
];
2097 VPRINTK("port %u\n", i
);
2099 VPRINTK("port %u (no irq)\n", i
);
2100 if (ata_ratelimit())
2101 dev_printk(KERN_WARNING
, host
->dev
,
2102 "interrupt on disabled port %u\n", i
);
2108 /* HOST_IRQ_STAT behaves as level triggered latch meaning that
2109 * it should be cleared after all the port events are cleared;
2110 * otherwise, it will raise a spurious interrupt after each
2111 * valid one. Please read section 10.6.2 of ahci 1.1 for more
2114 * Also, use the unmasked value to clear interrupt as spurious
2115 * pending event on a dummy port might cause screaming IRQ.
2117 writel(irq_stat
, mmio
+ HOST_IRQ_STAT
);
2119 spin_unlock(&host
->lock
);
2123 return IRQ_RETVAL(handled
);
2126 static unsigned int ahci_qc_issue(struct ata_queued_cmd
*qc
)
2128 struct ata_port
*ap
= qc
->ap
;
2129 void __iomem
*port_mmio
= ahci_port_base(ap
);
2130 struct ahci_port_priv
*pp
= ap
->private_data
;
2132 /* Keep track of the currently active link. It will be used
2133 * in completion path to determine whether NCQ phase is in
2136 pp
->active_link
= qc
->dev
->link
;
2138 if (qc
->tf
.protocol
== ATA_PROT_NCQ
)
2139 writel(1 << qc
->tag
, port_mmio
+ PORT_SCR_ACT
);
2140 writel(1 << qc
->tag
, port_mmio
+ PORT_CMD_ISSUE
);
2142 ahci_sw_activity(qc
->dev
->link
);
2147 static bool ahci_qc_fill_rtf(struct ata_queued_cmd
*qc
)
2149 struct ahci_port_priv
*pp
= qc
->ap
->private_data
;
2150 u8
*d2h_fis
= pp
->rx_fis
+ RX_FIS_D2H_REG
;
2152 ata_tf_from_fis(d2h_fis
, &qc
->result_tf
);
2156 static void ahci_freeze(struct ata_port
*ap
)
2158 void __iomem
*port_mmio
= ahci_port_base(ap
);
2161 writel(0, port_mmio
+ PORT_IRQ_MASK
);
2164 static void ahci_thaw(struct ata_port
*ap
)
2166 void __iomem
*mmio
= ap
->host
->iomap
[AHCI_PCI_BAR
];
2167 void __iomem
*port_mmio
= ahci_port_base(ap
);
2169 struct ahci_port_priv
*pp
= ap
->private_data
;
2172 tmp
= readl(port_mmio
+ PORT_IRQ_STAT
);
2173 writel(tmp
, port_mmio
+ PORT_IRQ_STAT
);
2174 writel(1 << ap
->port_no
, mmio
+ HOST_IRQ_STAT
);
2176 /* turn IRQ back on */
2177 writel(pp
->intr_mask
, port_mmio
+ PORT_IRQ_MASK
);
2180 static void ahci_error_handler(struct ata_port
*ap
)
2182 if (!(ap
->pflags
& ATA_PFLAG_FROZEN
)) {
2183 /* restart engine */
2184 ahci_stop_engine(ap
);
2185 ahci_start_engine(ap
);
2188 sata_pmp_error_handler(ap
);
2191 static void ahci_post_internal_cmd(struct ata_queued_cmd
*qc
)
2193 struct ata_port
*ap
= qc
->ap
;
2195 /* make DMA engine forget about the failed command */
2196 if (qc
->flags
& ATA_QCFLAG_FAILED
)
2197 ahci_kick_engine(ap
, 1);
2200 static void ahci_pmp_attach(struct ata_port
*ap
)
2202 void __iomem
*port_mmio
= ahci_port_base(ap
);
2203 struct ahci_port_priv
*pp
= ap
->private_data
;
2206 cmd
= readl(port_mmio
+ PORT_CMD
);
2207 cmd
|= PORT_CMD_PMP
;
2208 writel(cmd
, port_mmio
+ PORT_CMD
);
2210 pp
->intr_mask
|= PORT_IRQ_BAD_PMP
;
2211 writel(pp
->intr_mask
, port_mmio
+ PORT_IRQ_MASK
);
2214 static void ahci_pmp_detach(struct ata_port
*ap
)
2216 void __iomem
*port_mmio
= ahci_port_base(ap
);
2217 struct ahci_port_priv
*pp
= ap
->private_data
;
2220 cmd
= readl(port_mmio
+ PORT_CMD
);
2221 cmd
&= ~PORT_CMD_PMP
;
2222 writel(cmd
, port_mmio
+ PORT_CMD
);
2224 pp
->intr_mask
&= ~PORT_IRQ_BAD_PMP
;
2225 writel(pp
->intr_mask
, port_mmio
+ PORT_IRQ_MASK
);
2228 static int ahci_port_resume(struct ata_port
*ap
)
2231 ahci_start_port(ap
);
2233 if (sata_pmp_attached(ap
))
2234 ahci_pmp_attach(ap
);
2236 ahci_pmp_detach(ap
);
2242 static int ahci_port_suspend(struct ata_port
*ap
, pm_message_t mesg
)
2244 const char *emsg
= NULL
;
2247 rc
= ahci_deinit_port(ap
, &emsg
);
2249 ahci_power_down(ap
);
2251 ata_port_printk(ap
, KERN_ERR
, "%s (%d)\n", emsg
, rc
);
2252 ahci_start_port(ap
);
2258 static int ahci_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
)
2260 struct ata_host
*host
= dev_get_drvdata(&pdev
->dev
);
2261 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
2264 if (mesg
.event
& PM_EVENT_SLEEP
) {
2265 /* AHCI spec rev1.1 section 8.3.3:
2266 * Software must disable interrupts prior to requesting a
2267 * transition of the HBA to D3 state.
2269 ctl
= readl(mmio
+ HOST_CTL
);
2270 ctl
&= ~HOST_IRQ_EN
;
2271 writel(ctl
, mmio
+ HOST_CTL
);
2272 readl(mmio
+ HOST_CTL
); /* flush */
2275 return ata_pci_device_suspend(pdev
, mesg
);
2278 static int ahci_pci_device_resume(struct pci_dev
*pdev
)
2280 struct ata_host
*host
= dev_get_drvdata(&pdev
->dev
);
2283 rc
= ata_pci_device_do_resume(pdev
);
2287 if (pdev
->dev
.power
.power_state
.event
== PM_EVENT_SUSPEND
) {
2288 rc
= ahci_reset_controller(host
);
2292 ahci_init_controller(host
);
2295 ata_host_resume(host
);
2301 static int ahci_port_start(struct ata_port
*ap
)
2303 struct device
*dev
= ap
->host
->dev
;
2304 struct ahci_port_priv
*pp
;
2308 pp
= devm_kzalloc(dev
, sizeof(*pp
), GFP_KERNEL
);
2312 mem
= dmam_alloc_coherent(dev
, AHCI_PORT_PRIV_DMA_SZ
, &mem_dma
,
2316 memset(mem
, 0, AHCI_PORT_PRIV_DMA_SZ
);
2319 * First item in chunk of DMA memory: 32-slot command table,
2320 * 32 bytes each in size
2323 pp
->cmd_slot_dma
= mem_dma
;
2325 mem
+= AHCI_CMD_SLOT_SZ
;
2326 mem_dma
+= AHCI_CMD_SLOT_SZ
;
2329 * Second item: Received-FIS area
2332 pp
->rx_fis_dma
= mem_dma
;
2334 mem
+= AHCI_RX_FIS_SZ
;
2335 mem_dma
+= AHCI_RX_FIS_SZ
;
2338 * Third item: data area for storing a single command
2339 * and its scatter-gather table
2342 pp
->cmd_tbl_dma
= mem_dma
;
2345 * Save off initial list of interrupts to be enabled.
2346 * This could be changed later
2348 pp
->intr_mask
= DEF_PORT_IRQ
;
2350 ap
->private_data
= pp
;
2352 /* engage engines, captain */
2353 return ahci_port_resume(ap
);
2356 static void ahci_port_stop(struct ata_port
*ap
)
2358 const char *emsg
= NULL
;
2361 /* de-initialize port */
2362 rc
= ahci_deinit_port(ap
, &emsg
);
2364 ata_port_printk(ap
, KERN_WARNING
, "%s (%d)\n", emsg
, rc
);
2367 static int ahci_configure_dma_masks(struct pci_dev
*pdev
, int using_dac
)
2372 !pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) {
2373 rc
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
2375 rc
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
2377 dev_printk(KERN_ERR
, &pdev
->dev
,
2378 "64-bit DMA enable failed\n");
2383 rc
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
2385 dev_printk(KERN_ERR
, &pdev
->dev
,
2386 "32-bit DMA enable failed\n");
2389 rc
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
2391 dev_printk(KERN_ERR
, &pdev
->dev
,
2392 "32-bit consistent DMA enable failed\n");
2399 static void ahci_print_info(struct ata_host
*host
)
2401 struct ahci_host_priv
*hpriv
= host
->private_data
;
2402 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
2403 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
2404 u32 vers
, cap
, impl
, speed
;
2405 const char *speed_s
;
2409 vers
= readl(mmio
+ HOST_VERSION
);
2411 impl
= hpriv
->port_map
;
2413 speed
= (cap
>> 20) & 0xf;
2416 else if (speed
== 2)
2421 pci_read_config_word(pdev
, 0x0a, &cc
);
2422 if (cc
== PCI_CLASS_STORAGE_IDE
)
2424 else if (cc
== PCI_CLASS_STORAGE_SATA
)
2426 else if (cc
== PCI_CLASS_STORAGE_RAID
)
2431 dev_printk(KERN_INFO
, &pdev
->dev
,
2432 "AHCI %02x%02x.%02x%02x "
2433 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
2436 (vers
>> 24) & 0xff,
2437 (vers
>> 16) & 0xff,
2441 ((cap
>> 8) & 0x1f) + 1,
2447 dev_printk(KERN_INFO
, &pdev
->dev
,
2454 cap
& (1 << 31) ? "64bit " : "",
2455 cap
& (1 << 30) ? "ncq " : "",
2456 cap
& (1 << 29) ? "sntf " : "",
2457 cap
& (1 << 28) ? "ilck " : "",
2458 cap
& (1 << 27) ? "stag " : "",
2459 cap
& (1 << 26) ? "pm " : "",
2460 cap
& (1 << 25) ? "led " : "",
2462 cap
& (1 << 24) ? "clo " : "",
2463 cap
& (1 << 19) ? "nz " : "",
2464 cap
& (1 << 18) ? "only " : "",
2465 cap
& (1 << 17) ? "pmp " : "",
2466 cap
& (1 << 15) ? "pio " : "",
2467 cap
& (1 << 14) ? "slum " : "",
2468 cap
& (1 << 13) ? "part " : "",
2469 cap
& (1 << 6) ? "ems ": ""
2473 /* On ASUS P5W DH Deluxe, the second port of PCI device 00:1f.2 is
2474 * hardwired to on-board SIMG 4726. The chipset is ICH8 and doesn't
2475 * support PMP and the 4726 either directly exports the device
2476 * attached to the first downstream port or acts as a hardware storage
2477 * controller and emulate a single ATA device (can be RAID 0/1 or some
2478 * other configuration).
2480 * When there's no device attached to the first downstream port of the
2481 * 4726, "Config Disk" appears, which is a pseudo ATA device to
2482 * configure the 4726. However, ATA emulation of the device is very
2483 * lame. It doesn't send signature D2H Reg FIS after the initial
2484 * hardreset, pukes on SRST w/ PMP==0 and has bunch of other issues.
2486 * The following function works around the problem by always using
2487 * hardreset on the port and not depending on receiving signature FIS
2488 * afterward. If signature FIS isn't received soon, ATA class is
2489 * assumed without follow-up softreset.
2491 static void ahci_p5wdh_workaround(struct ata_host
*host
)
2493 static struct dmi_system_id sysids
[] = {
2495 .ident
= "P5W DH Deluxe",
2497 DMI_MATCH(DMI_SYS_VENDOR
,
2498 "ASUSTEK COMPUTER INC"),
2499 DMI_MATCH(DMI_PRODUCT_NAME
, "P5W DH Deluxe"),
2504 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
2506 if (pdev
->bus
->number
== 0 && pdev
->devfn
== PCI_DEVFN(0x1f, 2) &&
2507 dmi_check_system(sysids
)) {
2508 struct ata_port
*ap
= host
->ports
[1];
2510 dev_printk(KERN_INFO
, &pdev
->dev
, "enabling ASUS P5W DH "
2511 "Deluxe on-board SIMG4726 workaround\n");
2513 ap
->ops
= &ahci_p5wdh_ops
;
2514 ap
->link
.flags
|= ATA_LFLAG_NO_SRST
| ATA_LFLAG_ASSUME_ATA
;
2518 static int ahci_init_one(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
2520 static int printed_version
;
2521 unsigned int board_id
= ent
->driver_data
;
2522 struct ata_port_info pi
= ahci_port_info
[board_id
];
2523 const struct ata_port_info
*ppi
[] = { &pi
, NULL
};
2524 struct device
*dev
= &pdev
->dev
;
2525 struct ahci_host_priv
*hpriv
;
2526 struct ata_host
*host
;
2531 WARN_ON(ATA_MAX_QUEUE
> AHCI_MAX_CMDS
);
2533 if (!printed_version
++)
2534 dev_printk(KERN_DEBUG
, &pdev
->dev
, "version " DRV_VERSION
"\n");
2536 /* acquire resources */
2537 rc
= pcim_enable_device(pdev
);
2541 /* AHCI controllers often implement SFF compatible interface.
2542 * Grab all PCI BARs just in case.
2544 rc
= pcim_iomap_regions_request_all(pdev
, 1 << AHCI_PCI_BAR
, DRV_NAME
);
2546 pcim_pin_device(pdev
);
2550 if (pdev
->vendor
== PCI_VENDOR_ID_INTEL
&&
2551 (pdev
->device
== 0x2652 || pdev
->device
== 0x2653)) {
2554 /* ICH6s share the same PCI ID for both piix and ahci
2555 * modes. Enabling ahci mode while MAP indicates
2556 * combined mode is a bad idea. Yield to ata_piix.
2558 pci_read_config_byte(pdev
, ICH_MAP
, &map
);
2560 dev_printk(KERN_INFO
, &pdev
->dev
, "controller is in "
2561 "combined mode, can't enable AHCI mode\n");
2566 hpriv
= devm_kzalloc(dev
, sizeof(*hpriv
), GFP_KERNEL
);
2569 hpriv
->flags
|= (unsigned long)pi
.private_data
;
2571 /* MCP65 revision A1 and A2 can't do MSI */
2572 if (board_id
== board_ahci_mcp65
&&
2573 (pdev
->revision
== 0xa1 || pdev
->revision
== 0xa2))
2574 hpriv
->flags
|= AHCI_HFLAG_NO_MSI
;
2576 if ((hpriv
->flags
& AHCI_HFLAG_NO_MSI
) || pci_enable_msi(pdev
))
2579 /* save initial config */
2580 ahci_save_initial_config(pdev
, hpriv
);
2583 if (hpriv
->cap
& HOST_CAP_NCQ
)
2584 pi
.flags
|= ATA_FLAG_NCQ
;
2586 if (hpriv
->cap
& HOST_CAP_PMP
)
2587 pi
.flags
|= ATA_FLAG_PMP
;
2589 if (ahci_em_messages
&& (hpriv
->cap
& HOST_CAP_EMS
)) {
2591 void __iomem
*mmio
= pcim_iomap_table(pdev
)[AHCI_PCI_BAR
];
2592 u32 em_loc
= readl(mmio
+ HOST_EM_LOC
);
2593 u32 em_ctl
= readl(mmio
+ HOST_EM_CTL
);
2595 messages
= (em_ctl
& 0x000f0000) >> 16;
2597 /* we only support LED message type right now */
2598 if ((messages
& 0x01) && (ahci_em_messages
== 1)) {
2600 hpriv
->em_loc
= ((em_loc
>> 16) * 4);
2601 pi
.flags
|= ATA_FLAG_EM
;
2602 if (!(em_ctl
& EM_CTL_ALHD
))
2603 pi
.flags
|= ATA_FLAG_SW_ACTIVITY
;
2607 /* CAP.NP sometimes indicate the index of the last enabled
2608 * port, at other times, that of the last possible port, so
2609 * determining the maximum port number requires looking at
2610 * both CAP.NP and port_map.
2612 n_ports
= max(ahci_nr_ports(hpriv
->cap
), fls(hpriv
->port_map
));
2614 host
= ata_host_alloc_pinfo(&pdev
->dev
, ppi
, n_ports
);
2617 host
->iomap
= pcim_iomap_table(pdev
);
2618 host
->private_data
= hpriv
;
2620 if (pi
.flags
& ATA_FLAG_EM
)
2621 ahci_reset_em(host
);
2623 for (i
= 0; i
< host
->n_ports
; i
++) {
2624 struct ata_port
*ap
= host
->ports
[i
];
2626 ata_port_pbar_desc(ap
, AHCI_PCI_BAR
, -1, "abar");
2627 ata_port_pbar_desc(ap
, AHCI_PCI_BAR
,
2628 0x100 + ap
->port_no
* 0x80, "port");
2630 /* set initial link pm policy */
2631 ap
->pm_policy
= NOT_AVAILABLE
;
2633 /* set enclosure management message type */
2634 if (ap
->flags
& ATA_FLAG_EM
)
2635 ap
->em_message_type
= ahci_em_messages
;
2638 /* disabled/not-implemented port */
2639 if (!(hpriv
->port_map
& (1 << i
)))
2640 ap
->ops
= &ata_dummy_port_ops
;
2643 /* apply workaround for ASUS P5W DH Deluxe mainboard */
2644 ahci_p5wdh_workaround(host
);
2646 /* initialize adapter */
2647 rc
= ahci_configure_dma_masks(pdev
, hpriv
->cap
& HOST_CAP_64
);
2651 rc
= ahci_reset_controller(host
);
2655 ahci_init_controller(host
);
2656 ahci_print_info(host
);
2658 pci_set_master(pdev
);
2659 return ata_host_activate(host
, pdev
->irq
, ahci_interrupt
, IRQF_SHARED
,
2663 static int __init
ahci_init(void)
2665 return pci_register_driver(&ahci_pci_driver
);
2668 static void __exit
ahci_exit(void)
2670 pci_unregister_driver(&ahci_pci_driver
);
2674 MODULE_AUTHOR("Jeff Garzik");
2675 MODULE_DESCRIPTION("AHCI SATA low-level driver");
2676 MODULE_LICENSE("GPL");
2677 MODULE_DEVICE_TABLE(pci
, ahci_pci_tbl
);
2678 MODULE_VERSION(DRV_VERSION
);
2680 module_init(ahci_init
);
2681 module_exit(ahci_exit
);