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
);
63 AHCI_MAX_SG
= 168, /* hardware max is 64K */
64 AHCI_DMA_BOUNDARY
= 0xffffffff,
67 AHCI_CMD_SLOT_SZ
= AHCI_MAX_CMDS
* AHCI_CMD_SZ
,
69 AHCI_CMD_TBL_CDB
= 0x40,
70 AHCI_CMD_TBL_HDR_SZ
= 0x80,
71 AHCI_CMD_TBL_SZ
= AHCI_CMD_TBL_HDR_SZ
+ (AHCI_MAX_SG
* 16),
72 AHCI_CMD_TBL_AR_SZ
= AHCI_CMD_TBL_SZ
* AHCI_MAX_CMDS
,
73 AHCI_PORT_PRIV_DMA_SZ
= AHCI_CMD_SLOT_SZ
+ AHCI_CMD_TBL_AR_SZ
+
75 AHCI_IRQ_ON_SG
= (1 << 31),
76 AHCI_CMD_ATAPI
= (1 << 5),
77 AHCI_CMD_WRITE
= (1 << 6),
78 AHCI_CMD_PREFETCH
= (1 << 7),
79 AHCI_CMD_RESET
= (1 << 8),
80 AHCI_CMD_CLR_BUSY
= (1 << 10),
82 RX_FIS_D2H_REG
= 0x40, /* offset of D2H Register FIS data */
83 RX_FIS_SDB
= 0x58, /* offset of SDB FIS data */
84 RX_FIS_UNK
= 0x60, /* offset of Unknown FIS data */
87 board_ahci_vt8251
= 1,
88 board_ahci_ign_iferr
= 2,
93 /* global controller registers */
94 HOST_CAP
= 0x00, /* host capabilities */
95 HOST_CTL
= 0x04, /* global host control */
96 HOST_IRQ_STAT
= 0x08, /* interrupt status */
97 HOST_PORTS_IMPL
= 0x0c, /* bitmap of implemented ports */
98 HOST_VERSION
= 0x10, /* AHCI spec. version compliancy */
101 HOST_RESET
= (1 << 0), /* reset controller; self-clear */
102 HOST_IRQ_EN
= (1 << 1), /* global IRQ enable */
103 HOST_AHCI_EN
= (1 << 31), /* AHCI enabled */
106 HOST_CAP_SSC
= (1 << 14), /* Slumber capable */
107 HOST_CAP_PMP
= (1 << 17), /* Port Multiplier support */
108 HOST_CAP_CLO
= (1 << 24), /* Command List Override support */
109 HOST_CAP_ALPM
= (1 << 26), /* Aggressive Link PM support */
110 HOST_CAP_SSS
= (1 << 27), /* Staggered Spin-up */
111 HOST_CAP_SNTF
= (1 << 29), /* SNotification register */
112 HOST_CAP_NCQ
= (1 << 30), /* Native Command Queueing */
113 HOST_CAP_64
= (1 << 31), /* PCI DAC (64-bit DMA) support */
115 /* registers for each SATA port */
116 PORT_LST_ADDR
= 0x00, /* command list DMA addr */
117 PORT_LST_ADDR_HI
= 0x04, /* command list DMA addr hi */
118 PORT_FIS_ADDR
= 0x08, /* FIS rx buf addr */
119 PORT_FIS_ADDR_HI
= 0x0c, /* FIS rx buf addr hi */
120 PORT_IRQ_STAT
= 0x10, /* interrupt status */
121 PORT_IRQ_MASK
= 0x14, /* interrupt enable/disable mask */
122 PORT_CMD
= 0x18, /* port command */
123 PORT_TFDATA
= 0x20, /* taskfile data */
124 PORT_SIG
= 0x24, /* device TF signature */
125 PORT_CMD_ISSUE
= 0x38, /* command issue */
126 PORT_SCR_STAT
= 0x28, /* SATA phy register: SStatus */
127 PORT_SCR_CTL
= 0x2c, /* SATA phy register: SControl */
128 PORT_SCR_ERR
= 0x30, /* SATA phy register: SError */
129 PORT_SCR_ACT
= 0x34, /* SATA phy register: SActive */
130 PORT_SCR_NTF
= 0x3c, /* SATA phy register: SNotification */
132 /* PORT_IRQ_{STAT,MASK} bits */
133 PORT_IRQ_COLD_PRES
= (1 << 31), /* cold presence detect */
134 PORT_IRQ_TF_ERR
= (1 << 30), /* task file error */
135 PORT_IRQ_HBUS_ERR
= (1 << 29), /* host bus fatal error */
136 PORT_IRQ_HBUS_DATA_ERR
= (1 << 28), /* host bus data error */
137 PORT_IRQ_IF_ERR
= (1 << 27), /* interface fatal error */
138 PORT_IRQ_IF_NONFATAL
= (1 << 26), /* interface non-fatal error */
139 PORT_IRQ_OVERFLOW
= (1 << 24), /* xfer exhausted available S/G */
140 PORT_IRQ_BAD_PMP
= (1 << 23), /* incorrect port multiplier */
142 PORT_IRQ_PHYRDY
= (1 << 22), /* PhyRdy changed */
143 PORT_IRQ_DEV_ILCK
= (1 << 7), /* device interlock */
144 PORT_IRQ_CONNECT
= (1 << 6), /* port connect change status */
145 PORT_IRQ_SG_DONE
= (1 << 5), /* descriptor processed */
146 PORT_IRQ_UNK_FIS
= (1 << 4), /* unknown FIS rx'd */
147 PORT_IRQ_SDB_FIS
= (1 << 3), /* Set Device Bits FIS rx'd */
148 PORT_IRQ_DMAS_FIS
= (1 << 2), /* DMA Setup FIS rx'd */
149 PORT_IRQ_PIOS_FIS
= (1 << 1), /* PIO Setup FIS rx'd */
150 PORT_IRQ_D2H_REG_FIS
= (1 << 0), /* D2H Register FIS rx'd */
152 PORT_IRQ_FREEZE
= PORT_IRQ_HBUS_ERR
|
158 PORT_IRQ_ERROR
= PORT_IRQ_FREEZE
|
160 PORT_IRQ_HBUS_DATA_ERR
,
161 DEF_PORT_IRQ
= PORT_IRQ_ERROR
| PORT_IRQ_SG_DONE
|
162 PORT_IRQ_SDB_FIS
| PORT_IRQ_DMAS_FIS
|
163 PORT_IRQ_PIOS_FIS
| PORT_IRQ_D2H_REG_FIS
,
166 PORT_CMD_ASP
= (1 << 27), /* Aggressive Slumber/Partial */
167 PORT_CMD_ALPE
= (1 << 26), /* Aggressive Link PM enable */
168 PORT_CMD_ATAPI
= (1 << 24), /* Device is ATAPI */
169 PORT_CMD_PMP
= (1 << 17), /* PMP attached */
170 PORT_CMD_LIST_ON
= (1 << 15), /* cmd list DMA engine running */
171 PORT_CMD_FIS_ON
= (1 << 14), /* FIS DMA engine running */
172 PORT_CMD_FIS_RX
= (1 << 4), /* Enable FIS receive DMA engine */
173 PORT_CMD_CLO
= (1 << 3), /* Command list override */
174 PORT_CMD_POWER_ON
= (1 << 2), /* Power up device */
175 PORT_CMD_SPIN_UP
= (1 << 1), /* Spin up device */
176 PORT_CMD_START
= (1 << 0), /* Enable port DMA engine */
178 PORT_CMD_ICC_MASK
= (0xf << 28), /* i/f ICC state mask */
179 PORT_CMD_ICC_ACTIVE
= (0x1 << 28), /* Put i/f in active state */
180 PORT_CMD_ICC_PARTIAL
= (0x2 << 28), /* Put i/f in partial state */
181 PORT_CMD_ICC_SLUMBER
= (0x6 << 28), /* Put i/f in slumber state */
183 /* hpriv->flags bits */
184 AHCI_HFLAG_NO_NCQ
= (1 << 0),
185 AHCI_HFLAG_IGN_IRQ_IF_ERR
= (1 << 1), /* ignore IRQ_IF_ERR */
186 AHCI_HFLAG_IGN_SERR_INTERNAL
= (1 << 2), /* ignore SERR_INTERNAL */
187 AHCI_HFLAG_32BIT_ONLY
= (1 << 3), /* force 32bit */
188 AHCI_HFLAG_MV_PATA
= (1 << 4), /* PATA port */
189 AHCI_HFLAG_NO_MSI
= (1 << 5), /* no PCI MSI */
190 AHCI_HFLAG_NO_PMP
= (1 << 6), /* no PMP */
191 AHCI_HFLAG_NO_HOTPLUG
= (1 << 7), /* ignore PxSERR.DIAG.N */
192 AHCI_HFLAG_SECT255
= (1 << 8), /* max 255 sectors */
196 AHCI_FLAG_COMMON
= ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
|
197 ATA_FLAG_MMIO
| ATA_FLAG_PIO_DMA
|
198 ATA_FLAG_ACPI_SATA
| ATA_FLAG_AN
|
201 ICH_MAP
= 0x90, /* ICH MAP register */
204 struct ahci_cmd_hdr
{
219 struct ahci_host_priv
{
220 unsigned int flags
; /* AHCI_HFLAG_* */
221 u32 cap
; /* cap to use */
222 u32 port_map
; /* port map to use */
223 u32 saved_cap
; /* saved initial cap */
224 u32 saved_port_map
; /* saved initial port_map */
227 struct ahci_port_priv
{
228 struct ata_link
*active_link
;
229 struct ahci_cmd_hdr
*cmd_slot
;
230 dma_addr_t cmd_slot_dma
;
232 dma_addr_t cmd_tbl_dma
;
234 dma_addr_t rx_fis_dma
;
235 /* for NCQ spurious interrupt analysis */
236 unsigned int ncq_saw_d2h
:1;
237 unsigned int ncq_saw_dmas
:1;
238 unsigned int ncq_saw_sdb
:1;
239 u32 intr_mask
; /* interrupts to enable */
242 static int ahci_scr_read(struct ata_port
*ap
, unsigned int sc_reg
, u32
*val
);
243 static int ahci_scr_write(struct ata_port
*ap
, unsigned int sc_reg
, u32 val
);
244 static int ahci_init_one(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
245 static unsigned int ahci_qc_issue(struct ata_queued_cmd
*qc
);
246 static int ahci_port_start(struct ata_port
*ap
);
247 static void ahci_port_stop(struct ata_port
*ap
);
248 static void ahci_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
);
249 static void ahci_qc_prep(struct ata_queued_cmd
*qc
);
250 static u8
ahci_check_status(struct ata_port
*ap
);
251 static void ahci_freeze(struct ata_port
*ap
);
252 static void ahci_thaw(struct ata_port
*ap
);
253 static void ahci_pmp_attach(struct ata_port
*ap
);
254 static void ahci_pmp_detach(struct ata_port
*ap
);
255 static int ahci_softreset(struct ata_link
*link
, unsigned int *class,
256 unsigned long deadline
);
257 static int ahci_hardreset(struct ata_link
*link
, unsigned int *class,
258 unsigned long deadline
);
259 static int ahci_vt8251_hardreset(struct ata_link
*link
, unsigned int *class,
260 unsigned long deadline
);
261 static int ahci_p5wdh_hardreset(struct ata_link
*link
, unsigned int *class,
262 unsigned long deadline
);
263 static void ahci_postreset(struct ata_link
*link
, unsigned int *class);
264 static int ahci_pmp_softreset(struct ata_link
*link
, unsigned int *class,
265 unsigned long deadline
);
266 static void ahci_error_handler(struct ata_port
*ap
);
267 static void ahci_post_internal_cmd(struct ata_queued_cmd
*qc
);
268 static int ahci_port_resume(struct ata_port
*ap
);
269 static void ahci_dev_config(struct ata_device
*dev
);
270 static unsigned int ahci_fill_sg(struct ata_queued_cmd
*qc
, void *cmd_tbl
);
271 static void ahci_fill_cmd_slot(struct ahci_port_priv
*pp
, unsigned int tag
,
274 static int ahci_port_suspend(struct ata_port
*ap
, pm_message_t mesg
);
275 static int ahci_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
276 static int ahci_pci_device_resume(struct pci_dev
*pdev
);
279 static struct class_device_attribute
*ahci_shost_attrs
[] = {
280 &class_device_attr_link_power_management_policy
,
284 static struct scsi_host_template ahci_sht
= {
285 ATA_NCQ_SHT(DRV_NAME
),
286 .can_queue
= AHCI_MAX_CMDS
- 1,
287 .sg_tablesize
= AHCI_MAX_SG
,
288 .dma_boundary
= AHCI_DMA_BOUNDARY
,
289 .shost_attrs
= ahci_shost_attrs
,
292 static struct ata_port_operations ahci_ops
= {
293 .inherits
= &sata_pmp_port_ops
,
295 .sff_check_status
= ahci_check_status
,
296 .sff_check_altstatus
= ahci_check_status
,
298 .sff_tf_read
= ahci_tf_read
,
299 .qc_defer
= sata_pmp_qc_defer_cmd_switch
,
300 .qc_prep
= ahci_qc_prep
,
301 .qc_issue
= ahci_qc_issue
,
303 .freeze
= ahci_freeze
,
305 .softreset
= ahci_softreset
,
306 .hardreset
= ahci_hardreset
,
307 .postreset
= ahci_postreset
,
308 .pmp_softreset
= ahci_pmp_softreset
,
309 .error_handler
= ahci_error_handler
,
310 .post_internal_cmd
= ahci_post_internal_cmd
,
311 .dev_config
= ahci_dev_config
,
313 .scr_read
= ahci_scr_read
,
314 .scr_write
= ahci_scr_write
,
315 .pmp_attach
= ahci_pmp_attach
,
316 .pmp_detach
= ahci_pmp_detach
,
318 .enable_pm
= ahci_enable_alpm
,
319 .disable_pm
= ahci_disable_alpm
,
321 .port_suspend
= ahci_port_suspend
,
322 .port_resume
= ahci_port_resume
,
324 .port_start
= ahci_port_start
,
325 .port_stop
= ahci_port_stop
,
328 static struct ata_port_operations ahci_vt8251_ops
= {
329 .inherits
= &ahci_ops
,
330 .hardreset
= ahci_vt8251_hardreset
,
333 static struct ata_port_operations ahci_p5wdh_ops
= {
334 .inherits
= &ahci_ops
,
335 .hardreset
= ahci_p5wdh_hardreset
,
338 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
340 static const struct ata_port_info ahci_port_info
[] = {
343 .flags
= AHCI_FLAG_COMMON
,
344 .pio_mask
= 0x1f, /* pio0-4 */
345 .udma_mask
= ATA_UDMA6
,
346 .port_ops
= &ahci_ops
,
348 /* board_ahci_vt8251 */
350 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ
| AHCI_HFLAG_NO_PMP
),
351 .flags
= AHCI_FLAG_COMMON
,
352 .pio_mask
= 0x1f, /* pio0-4 */
353 .udma_mask
= ATA_UDMA6
,
354 .port_ops
= &ahci_vt8251_ops
,
356 /* board_ahci_ign_iferr */
358 AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR
),
359 .flags
= AHCI_FLAG_COMMON
,
360 .pio_mask
= 0x1f, /* pio0-4 */
361 .udma_mask
= ATA_UDMA6
,
362 .port_ops
= &ahci_ops
,
364 /* board_ahci_sb600 */
366 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL
|
367 AHCI_HFLAG_32BIT_ONLY
|
368 AHCI_HFLAG_SECT255
| AHCI_HFLAG_NO_PMP
),
369 .flags
= AHCI_FLAG_COMMON
,
370 .pio_mask
= 0x1f, /* pio0-4 */
371 .udma_mask
= ATA_UDMA6
,
372 .port_ops
= &ahci_ops
,
376 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ
| AHCI_HFLAG_NO_MSI
|
378 .flags
= ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
|
379 ATA_FLAG_MMIO
| ATA_FLAG_PIO_DMA
,
380 .pio_mask
= 0x1f, /* pio0-4 */
381 .udma_mask
= ATA_UDMA6
,
382 .port_ops
= &ahci_ops
,
384 /* board_ahci_sb700 */
386 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL
|
388 .flags
= AHCI_FLAG_COMMON
,
389 .pio_mask
= 0x1f, /* pio0-4 */
390 .udma_mask
= ATA_UDMA6
,
391 .port_ops
= &ahci_ops
,
395 static const struct pci_device_id ahci_pci_tbl
[] = {
397 { PCI_VDEVICE(INTEL
, 0x2652), board_ahci
}, /* ICH6 */
398 { PCI_VDEVICE(INTEL
, 0x2653), board_ahci
}, /* ICH6M */
399 { PCI_VDEVICE(INTEL
, 0x27c1), board_ahci
}, /* ICH7 */
400 { PCI_VDEVICE(INTEL
, 0x27c5), board_ahci
}, /* ICH7M */
401 { PCI_VDEVICE(INTEL
, 0x27c3), board_ahci
}, /* ICH7R */
402 { PCI_VDEVICE(AL
, 0x5288), board_ahci_ign_iferr
}, /* ULi M5288 */
403 { PCI_VDEVICE(INTEL
, 0x2681), board_ahci
}, /* ESB2 */
404 { PCI_VDEVICE(INTEL
, 0x2682), board_ahci
}, /* ESB2 */
405 { PCI_VDEVICE(INTEL
, 0x2683), board_ahci
}, /* ESB2 */
406 { PCI_VDEVICE(INTEL
, 0x27c6), board_ahci
}, /* ICH7-M DH */
407 { PCI_VDEVICE(INTEL
, 0x2821), board_ahci
}, /* ICH8 */
408 { PCI_VDEVICE(INTEL
, 0x2822), board_ahci
}, /* ICH8 */
409 { PCI_VDEVICE(INTEL
, 0x2824), board_ahci
}, /* ICH8 */
410 { PCI_VDEVICE(INTEL
, 0x2829), board_ahci
}, /* ICH8M */
411 { PCI_VDEVICE(INTEL
, 0x282a), board_ahci
}, /* ICH8M */
412 { PCI_VDEVICE(INTEL
, 0x2922), board_ahci
}, /* ICH9 */
413 { PCI_VDEVICE(INTEL
, 0x2923), board_ahci
}, /* ICH9 */
414 { PCI_VDEVICE(INTEL
, 0x2924), board_ahci
}, /* ICH9 */
415 { PCI_VDEVICE(INTEL
, 0x2925), board_ahci
}, /* ICH9 */
416 { PCI_VDEVICE(INTEL
, 0x2927), board_ahci
}, /* ICH9 */
417 { PCI_VDEVICE(INTEL
, 0x2929), board_ahci
}, /* ICH9M */
418 { PCI_VDEVICE(INTEL
, 0x292a), board_ahci
}, /* ICH9M */
419 { PCI_VDEVICE(INTEL
, 0x292b), board_ahci
}, /* ICH9M */
420 { PCI_VDEVICE(INTEL
, 0x292c), board_ahci
}, /* ICH9M */
421 { PCI_VDEVICE(INTEL
, 0x292f), board_ahci
}, /* ICH9M */
422 { PCI_VDEVICE(INTEL
, 0x294d), board_ahci
}, /* ICH9 */
423 { PCI_VDEVICE(INTEL
, 0x294e), board_ahci
}, /* ICH9M */
424 { PCI_VDEVICE(INTEL
, 0x502a), board_ahci
}, /* Tolapai */
425 { PCI_VDEVICE(INTEL
, 0x502b), board_ahci
}, /* Tolapai */
426 { PCI_VDEVICE(INTEL
, 0x3a05), board_ahci
}, /* ICH10 */
427 { PCI_VDEVICE(INTEL
, 0x3a25), board_ahci
}, /* ICH10 */
429 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
430 { PCI_VENDOR_ID_JMICRON
, PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
,
431 PCI_CLASS_STORAGE_SATA_AHCI
, 0xffffff, board_ahci_ign_iferr
},
434 { PCI_VDEVICE(ATI
, 0x4380), board_ahci_sb600
}, /* ATI SB600 */
435 { PCI_VDEVICE(ATI
, 0x4390), board_ahci_sb700
}, /* ATI SB700/800 */
436 { PCI_VDEVICE(ATI
, 0x4391), board_ahci_sb700
}, /* ATI SB700/800 */
437 { PCI_VDEVICE(ATI
, 0x4392), board_ahci_sb700
}, /* ATI SB700/800 */
438 { PCI_VDEVICE(ATI
, 0x4393), board_ahci_sb700
}, /* ATI SB700/800 */
439 { PCI_VDEVICE(ATI
, 0x4394), board_ahci_sb700
}, /* ATI SB700/800 */
440 { PCI_VDEVICE(ATI
, 0x4395), board_ahci_sb700
}, /* ATI SB700/800 */
443 { PCI_VDEVICE(VIA
, 0x3349), board_ahci_vt8251
}, /* VIA VT8251 */
444 { PCI_VDEVICE(VIA
, 0x6287), board_ahci_vt8251
}, /* VIA VT8251 */
447 { PCI_VDEVICE(NVIDIA
, 0x044c), board_ahci
}, /* MCP65 */
448 { PCI_VDEVICE(NVIDIA
, 0x044d), board_ahci
}, /* MCP65 */
449 { PCI_VDEVICE(NVIDIA
, 0x044e), board_ahci
}, /* MCP65 */
450 { PCI_VDEVICE(NVIDIA
, 0x044f), board_ahci
}, /* MCP65 */
451 { PCI_VDEVICE(NVIDIA
, 0x045c), board_ahci
}, /* MCP65 */
452 { PCI_VDEVICE(NVIDIA
, 0x045d), board_ahci
}, /* MCP65 */
453 { PCI_VDEVICE(NVIDIA
, 0x045e), board_ahci
}, /* MCP65 */
454 { PCI_VDEVICE(NVIDIA
, 0x045f), board_ahci
}, /* MCP65 */
455 { PCI_VDEVICE(NVIDIA
, 0x0550), board_ahci
}, /* MCP67 */
456 { PCI_VDEVICE(NVIDIA
, 0x0551), board_ahci
}, /* MCP67 */
457 { PCI_VDEVICE(NVIDIA
, 0x0552), board_ahci
}, /* MCP67 */
458 { PCI_VDEVICE(NVIDIA
, 0x0553), board_ahci
}, /* MCP67 */
459 { PCI_VDEVICE(NVIDIA
, 0x0554), board_ahci
}, /* MCP67 */
460 { PCI_VDEVICE(NVIDIA
, 0x0555), board_ahci
}, /* MCP67 */
461 { PCI_VDEVICE(NVIDIA
, 0x0556), board_ahci
}, /* MCP67 */
462 { PCI_VDEVICE(NVIDIA
, 0x0557), board_ahci
}, /* MCP67 */
463 { PCI_VDEVICE(NVIDIA
, 0x0558), board_ahci
}, /* MCP67 */
464 { PCI_VDEVICE(NVIDIA
, 0x0559), board_ahci
}, /* MCP67 */
465 { PCI_VDEVICE(NVIDIA
, 0x055a), board_ahci
}, /* MCP67 */
466 { PCI_VDEVICE(NVIDIA
, 0x055b), board_ahci
}, /* MCP67 */
467 { PCI_VDEVICE(NVIDIA
, 0x07f0), board_ahci
}, /* MCP73 */
468 { PCI_VDEVICE(NVIDIA
, 0x07f1), board_ahci
}, /* MCP73 */
469 { PCI_VDEVICE(NVIDIA
, 0x07f2), board_ahci
}, /* MCP73 */
470 { PCI_VDEVICE(NVIDIA
, 0x07f3), board_ahci
}, /* MCP73 */
471 { PCI_VDEVICE(NVIDIA
, 0x07f4), board_ahci
}, /* MCP73 */
472 { PCI_VDEVICE(NVIDIA
, 0x07f5), board_ahci
}, /* MCP73 */
473 { PCI_VDEVICE(NVIDIA
, 0x07f6), board_ahci
}, /* MCP73 */
474 { PCI_VDEVICE(NVIDIA
, 0x07f7), board_ahci
}, /* MCP73 */
475 { PCI_VDEVICE(NVIDIA
, 0x07f8), board_ahci
}, /* MCP73 */
476 { PCI_VDEVICE(NVIDIA
, 0x07f9), board_ahci
}, /* MCP73 */
477 { PCI_VDEVICE(NVIDIA
, 0x07fa), board_ahci
}, /* MCP73 */
478 { PCI_VDEVICE(NVIDIA
, 0x07fb), board_ahci
}, /* MCP73 */
479 { PCI_VDEVICE(NVIDIA
, 0x0ad0), board_ahci
}, /* MCP77 */
480 { PCI_VDEVICE(NVIDIA
, 0x0ad1), board_ahci
}, /* MCP77 */
481 { PCI_VDEVICE(NVIDIA
, 0x0ad2), board_ahci
}, /* MCP77 */
482 { PCI_VDEVICE(NVIDIA
, 0x0ad3), board_ahci
}, /* MCP77 */
483 { PCI_VDEVICE(NVIDIA
, 0x0ad4), board_ahci
}, /* MCP77 */
484 { PCI_VDEVICE(NVIDIA
, 0x0ad5), board_ahci
}, /* MCP77 */
485 { PCI_VDEVICE(NVIDIA
, 0x0ad6), board_ahci
}, /* MCP77 */
486 { PCI_VDEVICE(NVIDIA
, 0x0ad7), board_ahci
}, /* MCP77 */
487 { PCI_VDEVICE(NVIDIA
, 0x0ad8), board_ahci
}, /* MCP77 */
488 { PCI_VDEVICE(NVIDIA
, 0x0ad9), board_ahci
}, /* MCP77 */
489 { PCI_VDEVICE(NVIDIA
, 0x0ada), board_ahci
}, /* MCP77 */
490 { PCI_VDEVICE(NVIDIA
, 0x0adb), board_ahci
}, /* MCP77 */
491 { PCI_VDEVICE(NVIDIA
, 0x0ab4), board_ahci
}, /* MCP79 */
492 { PCI_VDEVICE(NVIDIA
, 0x0ab5), board_ahci
}, /* MCP79 */
493 { PCI_VDEVICE(NVIDIA
, 0x0ab6), board_ahci
}, /* MCP79 */
494 { PCI_VDEVICE(NVIDIA
, 0x0ab7), board_ahci
}, /* MCP79 */
495 { PCI_VDEVICE(NVIDIA
, 0x0ab8), board_ahci
}, /* MCP79 */
496 { PCI_VDEVICE(NVIDIA
, 0x0ab9), board_ahci
}, /* MCP79 */
497 { PCI_VDEVICE(NVIDIA
, 0x0aba), board_ahci
}, /* MCP79 */
498 { PCI_VDEVICE(NVIDIA
, 0x0abb), board_ahci
}, /* MCP79 */
499 { PCI_VDEVICE(NVIDIA
, 0x0abc), board_ahci
}, /* MCP79 */
500 { PCI_VDEVICE(NVIDIA
, 0x0abd), board_ahci
}, /* MCP79 */
501 { PCI_VDEVICE(NVIDIA
, 0x0abe), board_ahci
}, /* MCP79 */
502 { PCI_VDEVICE(NVIDIA
, 0x0abf), board_ahci
}, /* MCP79 */
503 { PCI_VDEVICE(NVIDIA
, 0x0bc8), board_ahci
}, /* MCP7B */
504 { PCI_VDEVICE(NVIDIA
, 0x0bc9), board_ahci
}, /* MCP7B */
505 { PCI_VDEVICE(NVIDIA
, 0x0bca), board_ahci
}, /* MCP7B */
506 { PCI_VDEVICE(NVIDIA
, 0x0bcb), board_ahci
}, /* MCP7B */
507 { PCI_VDEVICE(NVIDIA
, 0x0bcc), board_ahci
}, /* MCP7B */
508 { PCI_VDEVICE(NVIDIA
, 0x0bcd), board_ahci
}, /* MCP7B */
509 { PCI_VDEVICE(NVIDIA
, 0x0bce), board_ahci
}, /* MCP7B */
510 { PCI_VDEVICE(NVIDIA
, 0x0bcf), board_ahci
}, /* MCP7B */
511 { PCI_VDEVICE(NVIDIA
, 0x0bd0), board_ahci
}, /* MCP7B */
512 { PCI_VDEVICE(NVIDIA
, 0x0bd1), board_ahci
}, /* MCP7B */
513 { PCI_VDEVICE(NVIDIA
, 0x0bd2), board_ahci
}, /* MCP7B */
514 { PCI_VDEVICE(NVIDIA
, 0x0bd3), board_ahci
}, /* MCP7B */
517 { PCI_VDEVICE(SI
, 0x1184), board_ahci
}, /* SiS 966 */
518 { PCI_VDEVICE(SI
, 0x1185), board_ahci
}, /* SiS 966 */
519 { PCI_VDEVICE(SI
, 0x0186), board_ahci
}, /* SiS 968 */
522 { PCI_VDEVICE(MARVELL
, 0x6145), board_ahci_mv
}, /* 6145 */
523 { PCI_VDEVICE(MARVELL
, 0x6121), board_ahci_mv
}, /* 6121 */
525 /* Generic, PCI class code for AHCI */
526 { PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
,
527 PCI_CLASS_STORAGE_SATA_AHCI
, 0xffffff, board_ahci
},
529 { } /* terminate list */
533 static struct pci_driver ahci_pci_driver
= {
535 .id_table
= ahci_pci_tbl
,
536 .probe
= ahci_init_one
,
537 .remove
= ata_pci_remove_one
,
539 .suspend
= ahci_pci_device_suspend
,
540 .resume
= ahci_pci_device_resume
,
545 static inline int ahci_nr_ports(u32 cap
)
547 return (cap
& 0x1f) + 1;
550 static inline void __iomem
*__ahci_port_base(struct ata_host
*host
,
551 unsigned int port_no
)
553 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
555 return mmio
+ 0x100 + (port_no
* 0x80);
558 static inline void __iomem
*ahci_port_base(struct ata_port
*ap
)
560 return __ahci_port_base(ap
->host
, ap
->port_no
);
563 static void ahci_enable_ahci(void __iomem
*mmio
)
567 /* turn on AHCI_EN */
568 tmp
= readl(mmio
+ HOST_CTL
);
569 if (!(tmp
& HOST_AHCI_EN
)) {
571 writel(tmp
, mmio
+ HOST_CTL
);
572 tmp
= readl(mmio
+ HOST_CTL
); /* flush && sanity check */
573 WARN_ON(!(tmp
& HOST_AHCI_EN
));
578 * ahci_save_initial_config - Save and fixup initial config values
579 * @pdev: target PCI device
580 * @hpriv: host private area to store config values
582 * Some registers containing configuration info might be setup by
583 * BIOS and might be cleared on reset. This function saves the
584 * initial values of those registers into @hpriv such that they
585 * can be restored after controller reset.
587 * If inconsistent, config values are fixed up by this function.
592 static void ahci_save_initial_config(struct pci_dev
*pdev
,
593 struct ahci_host_priv
*hpriv
)
595 void __iomem
*mmio
= pcim_iomap_table(pdev
)[AHCI_PCI_BAR
];
600 /* make sure AHCI mode is enabled before accessing CAP */
601 ahci_enable_ahci(mmio
);
603 /* Values prefixed with saved_ are written back to host after
604 * reset. Values without are used for driver operation.
606 hpriv
->saved_cap
= cap
= readl(mmio
+ HOST_CAP
);
607 hpriv
->saved_port_map
= port_map
= readl(mmio
+ HOST_PORTS_IMPL
);
609 /* some chips have errata preventing 64bit use */
610 if ((cap
& HOST_CAP_64
) && (hpriv
->flags
& AHCI_HFLAG_32BIT_ONLY
)) {
611 dev_printk(KERN_INFO
, &pdev
->dev
,
612 "controller can't do 64bit DMA, forcing 32bit\n");
616 if ((cap
& HOST_CAP_NCQ
) && (hpriv
->flags
& AHCI_HFLAG_NO_NCQ
)) {
617 dev_printk(KERN_INFO
, &pdev
->dev
,
618 "controller can't do NCQ, turning off CAP_NCQ\n");
619 cap
&= ~HOST_CAP_NCQ
;
622 if ((cap
& HOST_CAP_PMP
) && (hpriv
->flags
& AHCI_HFLAG_NO_PMP
)) {
623 dev_printk(KERN_INFO
, &pdev
->dev
,
624 "controller can't do PMP, turning off CAP_PMP\n");
625 cap
&= ~HOST_CAP_PMP
;
629 * Temporary Marvell 6145 hack: PATA port presence
630 * is asserted through the standard AHCI port
631 * presence register, as bit 4 (counting from 0)
633 if (hpriv
->flags
& AHCI_HFLAG_MV_PATA
) {
634 if (pdev
->device
== 0x6121)
638 dev_printk(KERN_ERR
, &pdev
->dev
,
639 "MV_AHCI HACK: port_map %x -> %x\n",
646 /* cross check port_map and cap.n_ports */
650 for (i
= 0; i
< AHCI_MAX_PORTS
; i
++)
651 if (port_map
& (1 << i
))
654 /* If PI has more ports than n_ports, whine, clear
655 * port_map and let it be generated from n_ports.
657 if (map_ports
> ahci_nr_ports(cap
)) {
658 dev_printk(KERN_WARNING
, &pdev
->dev
,
659 "implemented port map (0x%x) contains more "
660 "ports than nr_ports (%u), using nr_ports\n",
661 port_map
, ahci_nr_ports(cap
));
666 /* fabricate port_map from cap.nr_ports */
668 port_map
= (1 << ahci_nr_ports(cap
)) - 1;
669 dev_printk(KERN_WARNING
, &pdev
->dev
,
670 "forcing PORTS_IMPL to 0x%x\n", port_map
);
672 /* write the fixed up value to the PI register */
673 hpriv
->saved_port_map
= port_map
;
676 /* record values to use during operation */
678 hpriv
->port_map
= port_map
;
682 * ahci_restore_initial_config - Restore initial config
683 * @host: target ATA host
685 * Restore initial config stored by ahci_save_initial_config().
690 static void ahci_restore_initial_config(struct ata_host
*host
)
692 struct ahci_host_priv
*hpriv
= host
->private_data
;
693 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
695 writel(hpriv
->saved_cap
, mmio
+ HOST_CAP
);
696 writel(hpriv
->saved_port_map
, mmio
+ HOST_PORTS_IMPL
);
697 (void) readl(mmio
+ HOST_PORTS_IMPL
); /* flush */
700 static unsigned ahci_scr_offset(struct ata_port
*ap
, unsigned int sc_reg
)
702 static const int offset
[] = {
703 [SCR_STATUS
] = PORT_SCR_STAT
,
704 [SCR_CONTROL
] = PORT_SCR_CTL
,
705 [SCR_ERROR
] = PORT_SCR_ERR
,
706 [SCR_ACTIVE
] = PORT_SCR_ACT
,
707 [SCR_NOTIFICATION
] = PORT_SCR_NTF
,
709 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
711 if (sc_reg
< ARRAY_SIZE(offset
) &&
712 (sc_reg
!= SCR_NOTIFICATION
|| (hpriv
->cap
& HOST_CAP_SNTF
)))
713 return offset
[sc_reg
];
717 static int ahci_scr_read(struct ata_port
*ap
, unsigned int sc_reg
, u32
*val
)
719 void __iomem
*port_mmio
= ahci_port_base(ap
);
720 int offset
= ahci_scr_offset(ap
, sc_reg
);
723 *val
= readl(port_mmio
+ offset
);
729 static int ahci_scr_write(struct ata_port
*ap
, unsigned int sc_reg
, u32 val
)
731 void __iomem
*port_mmio
= ahci_port_base(ap
);
732 int offset
= ahci_scr_offset(ap
, sc_reg
);
735 writel(val
, port_mmio
+ offset
);
741 static void ahci_start_engine(struct ata_port
*ap
)
743 void __iomem
*port_mmio
= ahci_port_base(ap
);
747 tmp
= readl(port_mmio
+ PORT_CMD
);
748 tmp
|= PORT_CMD_START
;
749 writel(tmp
, port_mmio
+ PORT_CMD
);
750 readl(port_mmio
+ PORT_CMD
); /* flush */
753 static int ahci_stop_engine(struct ata_port
*ap
)
755 void __iomem
*port_mmio
= ahci_port_base(ap
);
758 tmp
= readl(port_mmio
+ PORT_CMD
);
760 /* check if the HBA is idle */
761 if ((tmp
& (PORT_CMD_START
| PORT_CMD_LIST_ON
)) == 0)
764 /* setting HBA to idle */
765 tmp
&= ~PORT_CMD_START
;
766 writel(tmp
, port_mmio
+ PORT_CMD
);
768 /* wait for engine to stop. This could be as long as 500 msec */
769 tmp
= ata_wait_register(port_mmio
+ PORT_CMD
,
770 PORT_CMD_LIST_ON
, PORT_CMD_LIST_ON
, 1, 500);
771 if (tmp
& PORT_CMD_LIST_ON
)
777 static void ahci_start_fis_rx(struct ata_port
*ap
)
779 void __iomem
*port_mmio
= ahci_port_base(ap
);
780 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
781 struct ahci_port_priv
*pp
= ap
->private_data
;
784 /* set FIS registers */
785 if (hpriv
->cap
& HOST_CAP_64
)
786 writel((pp
->cmd_slot_dma
>> 16) >> 16,
787 port_mmio
+ PORT_LST_ADDR_HI
);
788 writel(pp
->cmd_slot_dma
& 0xffffffff, port_mmio
+ PORT_LST_ADDR
);
790 if (hpriv
->cap
& HOST_CAP_64
)
791 writel((pp
->rx_fis_dma
>> 16) >> 16,
792 port_mmio
+ PORT_FIS_ADDR_HI
);
793 writel(pp
->rx_fis_dma
& 0xffffffff, port_mmio
+ PORT_FIS_ADDR
);
795 /* enable FIS reception */
796 tmp
= readl(port_mmio
+ PORT_CMD
);
797 tmp
|= PORT_CMD_FIS_RX
;
798 writel(tmp
, port_mmio
+ PORT_CMD
);
801 readl(port_mmio
+ PORT_CMD
);
804 static int ahci_stop_fis_rx(struct ata_port
*ap
)
806 void __iomem
*port_mmio
= ahci_port_base(ap
);
809 /* disable FIS reception */
810 tmp
= readl(port_mmio
+ PORT_CMD
);
811 tmp
&= ~PORT_CMD_FIS_RX
;
812 writel(tmp
, port_mmio
+ PORT_CMD
);
814 /* wait for completion, spec says 500ms, give it 1000 */
815 tmp
= ata_wait_register(port_mmio
+ PORT_CMD
, PORT_CMD_FIS_ON
,
816 PORT_CMD_FIS_ON
, 10, 1000);
817 if (tmp
& PORT_CMD_FIS_ON
)
823 static void ahci_power_up(struct ata_port
*ap
)
825 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
826 void __iomem
*port_mmio
= ahci_port_base(ap
);
829 cmd
= readl(port_mmio
+ PORT_CMD
) & ~PORT_CMD_ICC_MASK
;
832 if (hpriv
->cap
& HOST_CAP_SSS
) {
833 cmd
|= PORT_CMD_SPIN_UP
;
834 writel(cmd
, port_mmio
+ PORT_CMD
);
838 writel(cmd
| PORT_CMD_ICC_ACTIVE
, port_mmio
+ PORT_CMD
);
841 static void ahci_disable_alpm(struct ata_port
*ap
)
843 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
844 void __iomem
*port_mmio
= ahci_port_base(ap
);
846 struct ahci_port_priv
*pp
= ap
->private_data
;
848 /* IPM bits should be disabled by libata-core */
849 /* get the existing command bits */
850 cmd
= readl(port_mmio
+ PORT_CMD
);
852 /* disable ALPM and ASP */
853 cmd
&= ~PORT_CMD_ASP
;
854 cmd
&= ~PORT_CMD_ALPE
;
856 /* force the interface back to active */
857 cmd
|= PORT_CMD_ICC_ACTIVE
;
859 /* write out new cmd value */
860 writel(cmd
, port_mmio
+ PORT_CMD
);
861 cmd
= readl(port_mmio
+ PORT_CMD
);
863 /* wait 10ms to be sure we've come out of any low power state */
866 /* clear out any PhyRdy stuff from interrupt status */
867 writel(PORT_IRQ_PHYRDY
, port_mmio
+ PORT_IRQ_STAT
);
869 /* go ahead and clean out PhyRdy Change from Serror too */
870 ahci_scr_write(ap
, SCR_ERROR
, ((1 << 16) | (1 << 18)));
873 * Clear flag to indicate that we should ignore all PhyRdy
876 hpriv
->flags
&= ~AHCI_HFLAG_NO_HOTPLUG
;
879 * Enable interrupts on Phy Ready.
881 pp
->intr_mask
|= PORT_IRQ_PHYRDY
;
882 writel(pp
->intr_mask
, port_mmio
+ PORT_IRQ_MASK
);
885 * don't change the link pm policy - we can be called
886 * just to turn of link pm temporarily
890 static int ahci_enable_alpm(struct ata_port
*ap
,
893 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
894 void __iomem
*port_mmio
= ahci_port_base(ap
);
896 struct ahci_port_priv
*pp
= ap
->private_data
;
899 /* Make sure the host is capable of link power management */
900 if (!(hpriv
->cap
& HOST_CAP_ALPM
))
904 case MAX_PERFORMANCE
:
907 * if we came here with NOT_AVAILABLE,
908 * it just means this is the first time we
909 * have tried to enable - default to max performance,
910 * and let the user go to lower power modes on request.
912 ahci_disable_alpm(ap
);
915 /* configure HBA to enter SLUMBER */
919 /* configure HBA to enter PARTIAL */
927 * Disable interrupts on Phy Ready. This keeps us from
928 * getting woken up due to spurious phy ready interrupts
929 * TBD - Hot plug should be done via polling now, is
930 * that even supported?
932 pp
->intr_mask
&= ~PORT_IRQ_PHYRDY
;
933 writel(pp
->intr_mask
, port_mmio
+ PORT_IRQ_MASK
);
936 * Set a flag to indicate that we should ignore all PhyRdy
937 * state changes since these can happen now whenever we
940 hpriv
->flags
|= AHCI_HFLAG_NO_HOTPLUG
;
942 /* get the existing command bits */
943 cmd
= readl(port_mmio
+ PORT_CMD
);
946 * Set ASP based on Policy
951 * Setting this bit will instruct the HBA to aggressively
952 * enter a lower power link state when it's appropriate and
953 * based on the value set above for ASP
955 cmd
|= PORT_CMD_ALPE
;
957 /* write out new cmd value */
958 writel(cmd
, port_mmio
+ PORT_CMD
);
959 cmd
= readl(port_mmio
+ PORT_CMD
);
961 /* IPM bits should be set by libata-core */
966 static void ahci_power_down(struct ata_port
*ap
)
968 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
969 void __iomem
*port_mmio
= ahci_port_base(ap
);
972 if (!(hpriv
->cap
& HOST_CAP_SSS
))
975 /* put device into listen mode, first set PxSCTL.DET to 0 */
976 scontrol
= readl(port_mmio
+ PORT_SCR_CTL
);
978 writel(scontrol
, port_mmio
+ PORT_SCR_CTL
);
980 /* then set PxCMD.SUD to 0 */
981 cmd
= readl(port_mmio
+ PORT_CMD
) & ~PORT_CMD_ICC_MASK
;
982 cmd
&= ~PORT_CMD_SPIN_UP
;
983 writel(cmd
, port_mmio
+ PORT_CMD
);
987 static void ahci_start_port(struct ata_port
*ap
)
989 /* enable FIS reception */
990 ahci_start_fis_rx(ap
);
993 ahci_start_engine(ap
);
996 static int ahci_deinit_port(struct ata_port
*ap
, const char **emsg
)
1001 rc
= ahci_stop_engine(ap
);
1003 *emsg
= "failed to stop engine";
1007 /* disable FIS reception */
1008 rc
= ahci_stop_fis_rx(ap
);
1010 *emsg
= "failed stop FIS RX";
1017 static int ahci_reset_controller(struct ata_host
*host
)
1019 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
1020 struct ahci_host_priv
*hpriv
= host
->private_data
;
1021 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
1024 /* we must be in AHCI mode, before using anything
1025 * AHCI-specific, such as HOST_RESET.
1027 ahci_enable_ahci(mmio
);
1029 /* global controller reset */
1030 if (!ahci_skip_host_reset
) {
1031 tmp
= readl(mmio
+ HOST_CTL
);
1032 if ((tmp
& HOST_RESET
) == 0) {
1033 writel(tmp
| HOST_RESET
, mmio
+ HOST_CTL
);
1034 readl(mmio
+ HOST_CTL
); /* flush */
1037 /* reset must complete within 1 second, or
1038 * the hardware should be considered fried.
1042 tmp
= readl(mmio
+ HOST_CTL
);
1043 if (tmp
& HOST_RESET
) {
1044 dev_printk(KERN_ERR
, host
->dev
,
1045 "controller reset failed (0x%x)\n", tmp
);
1049 /* turn on AHCI mode */
1050 ahci_enable_ahci(mmio
);
1052 /* Some registers might be cleared on reset. Restore
1055 ahci_restore_initial_config(host
);
1057 dev_printk(KERN_INFO
, host
->dev
,
1058 "skipping global host reset\n");
1060 if (pdev
->vendor
== PCI_VENDOR_ID_INTEL
) {
1064 pci_read_config_word(pdev
, 0x92, &tmp16
);
1065 if ((tmp16
& hpriv
->port_map
) != hpriv
->port_map
) {
1066 tmp16
|= hpriv
->port_map
;
1067 pci_write_config_word(pdev
, 0x92, tmp16
);
1074 static void ahci_port_init(struct pci_dev
*pdev
, struct ata_port
*ap
,
1075 int port_no
, void __iomem
*mmio
,
1076 void __iomem
*port_mmio
)
1078 const char *emsg
= NULL
;
1082 /* make sure port is not active */
1083 rc
= ahci_deinit_port(ap
, &emsg
);
1085 dev_printk(KERN_WARNING
, &pdev
->dev
,
1086 "%s (%d)\n", emsg
, rc
);
1089 tmp
= readl(port_mmio
+ PORT_SCR_ERR
);
1090 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp
);
1091 writel(tmp
, port_mmio
+ PORT_SCR_ERR
);
1093 /* clear port IRQ */
1094 tmp
= readl(port_mmio
+ PORT_IRQ_STAT
);
1095 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp
);
1097 writel(tmp
, port_mmio
+ PORT_IRQ_STAT
);
1099 writel(1 << port_no
, mmio
+ HOST_IRQ_STAT
);
1102 static void ahci_init_controller(struct ata_host
*host
)
1104 struct ahci_host_priv
*hpriv
= host
->private_data
;
1105 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
1106 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
1108 void __iomem
*port_mmio
;
1112 if (hpriv
->flags
& AHCI_HFLAG_MV_PATA
) {
1113 if (pdev
->device
== 0x6121)
1117 port_mmio
= __ahci_port_base(host
, mv
);
1119 writel(0, port_mmio
+ PORT_IRQ_MASK
);
1121 /* clear port IRQ */
1122 tmp
= readl(port_mmio
+ PORT_IRQ_STAT
);
1123 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp
);
1125 writel(tmp
, port_mmio
+ PORT_IRQ_STAT
);
1128 for (i
= 0; i
< host
->n_ports
; i
++) {
1129 struct ata_port
*ap
= host
->ports
[i
];
1131 port_mmio
= ahci_port_base(ap
);
1132 if (ata_port_is_dummy(ap
))
1135 ahci_port_init(pdev
, ap
, i
, mmio
, port_mmio
);
1138 tmp
= readl(mmio
+ HOST_CTL
);
1139 VPRINTK("HOST_CTL 0x%x\n", tmp
);
1140 writel(tmp
| HOST_IRQ_EN
, mmio
+ HOST_CTL
);
1141 tmp
= readl(mmio
+ HOST_CTL
);
1142 VPRINTK("HOST_CTL 0x%x\n", tmp
);
1145 static void ahci_dev_config(struct ata_device
*dev
)
1147 struct ahci_host_priv
*hpriv
= dev
->link
->ap
->host
->private_data
;
1149 if (hpriv
->flags
& AHCI_HFLAG_SECT255
) {
1150 dev
->max_sectors
= 255;
1151 ata_dev_printk(dev
, KERN_INFO
,
1152 "SB600 AHCI: limiting to 255 sectors per cmd\n");
1156 static unsigned int ahci_dev_classify(struct ata_port
*ap
)
1158 void __iomem
*port_mmio
= ahci_port_base(ap
);
1159 struct ata_taskfile tf
;
1162 tmp
= readl(port_mmio
+ PORT_SIG
);
1163 tf
.lbah
= (tmp
>> 24) & 0xff;
1164 tf
.lbam
= (tmp
>> 16) & 0xff;
1165 tf
.lbal
= (tmp
>> 8) & 0xff;
1166 tf
.nsect
= (tmp
) & 0xff;
1168 return ata_dev_classify(&tf
);
1171 static void ahci_fill_cmd_slot(struct ahci_port_priv
*pp
, unsigned int tag
,
1174 dma_addr_t cmd_tbl_dma
;
1176 cmd_tbl_dma
= pp
->cmd_tbl_dma
+ tag
* AHCI_CMD_TBL_SZ
;
1178 pp
->cmd_slot
[tag
].opts
= cpu_to_le32(opts
);
1179 pp
->cmd_slot
[tag
].status
= 0;
1180 pp
->cmd_slot
[tag
].tbl_addr
= cpu_to_le32(cmd_tbl_dma
& 0xffffffff);
1181 pp
->cmd_slot
[tag
].tbl_addr_hi
= cpu_to_le32((cmd_tbl_dma
>> 16) >> 16);
1184 static int ahci_kick_engine(struct ata_port
*ap
, int force_restart
)
1186 void __iomem
*port_mmio
= ap
->ioaddr
.cmd_addr
;
1187 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
1191 /* do we need to kick the port? */
1192 busy
= ahci_check_status(ap
) & (ATA_BUSY
| ATA_DRQ
);
1193 if (!busy
&& !force_restart
)
1197 rc
= ahci_stop_engine(ap
);
1201 /* need to do CLO? */
1207 if (!(hpriv
->cap
& HOST_CAP_CLO
)) {
1213 tmp
= readl(port_mmio
+ PORT_CMD
);
1214 tmp
|= PORT_CMD_CLO
;
1215 writel(tmp
, port_mmio
+ PORT_CMD
);
1218 tmp
= ata_wait_register(port_mmio
+ PORT_CMD
,
1219 PORT_CMD_CLO
, PORT_CMD_CLO
, 1, 500);
1220 if (tmp
& PORT_CMD_CLO
)
1223 /* restart engine */
1225 ahci_start_engine(ap
);
1229 static int ahci_exec_polled_cmd(struct ata_port
*ap
, int pmp
,
1230 struct ata_taskfile
*tf
, int is_cmd
, u16 flags
,
1231 unsigned long timeout_msec
)
1233 const u32 cmd_fis_len
= 5; /* five dwords */
1234 struct ahci_port_priv
*pp
= ap
->private_data
;
1235 void __iomem
*port_mmio
= ahci_port_base(ap
);
1236 u8
*fis
= pp
->cmd_tbl
;
1239 /* prep the command */
1240 ata_tf_to_fis(tf
, pmp
, is_cmd
, fis
);
1241 ahci_fill_cmd_slot(pp
, 0, cmd_fis_len
| flags
| (pmp
<< 12));
1244 writel(1, port_mmio
+ PORT_CMD_ISSUE
);
1247 tmp
= ata_wait_register(port_mmio
+ PORT_CMD_ISSUE
, 0x1, 0x1,
1250 ahci_kick_engine(ap
, 1);
1254 readl(port_mmio
+ PORT_CMD_ISSUE
); /* flush */
1259 static int ahci_check_ready(struct ata_link
*link
)
1261 void __iomem
*mmio
= link
->ap
->ioaddr
.cmd_addr
;
1262 u8 status
= readl(mmio
+ PORT_TFDATA
) & 0xFF;
1264 if (!(status
& ATA_BUSY
))
1269 static int ahci_do_softreset(struct ata_link
*link
, unsigned int *class,
1270 int pmp
, unsigned long deadline
)
1272 struct ata_port
*ap
= link
->ap
;
1273 const char *reason
= NULL
;
1274 unsigned long now
, msecs
;
1275 struct ata_taskfile tf
;
1280 if (ata_link_offline(link
)) {
1281 DPRINTK("PHY reports no device\n");
1282 *class = ATA_DEV_NONE
;
1286 /* prepare for SRST (AHCI-1.1 10.4.1) */
1287 rc
= ahci_kick_engine(ap
, 1);
1288 if (rc
&& rc
!= -EOPNOTSUPP
)
1289 ata_link_printk(link
, KERN_WARNING
,
1290 "failed to reset engine (errno=%d)\n", rc
);
1292 ata_tf_init(link
->device
, &tf
);
1294 /* issue the first D2H Register FIS */
1297 if (time_after(now
, deadline
))
1298 msecs
= jiffies_to_msecs(deadline
- now
);
1301 if (ahci_exec_polled_cmd(ap
, pmp
, &tf
, 0,
1302 AHCI_CMD_RESET
| AHCI_CMD_CLR_BUSY
, msecs
)) {
1304 reason
= "1st FIS failed";
1308 /* spec says at least 5us, but be generous and sleep for 1ms */
1311 /* issue the second D2H Register FIS */
1312 tf
.ctl
&= ~ATA_SRST
;
1313 ahci_exec_polled_cmd(ap
, pmp
, &tf
, 0, 0, 0);
1315 /* wait for link to become ready */
1316 rc
= ata_wait_after_reset(link
, deadline
, ahci_check_ready
);
1317 /* link occupied, -ENODEV too is an error */
1319 reason
= "device not ready";
1322 *class = ahci_dev_classify(ap
);
1324 DPRINTK("EXIT, class=%u\n", *class);
1328 ata_link_printk(link
, KERN_ERR
, "softreset failed (%s)\n", reason
);
1332 static int ahci_softreset(struct ata_link
*link
, unsigned int *class,
1333 unsigned long deadline
)
1337 if (link
->ap
->flags
& ATA_FLAG_PMP
)
1338 pmp
= SATA_PMP_CTRL_PORT
;
1340 return ahci_do_softreset(link
, class, pmp
, deadline
);
1343 static int ahci_hardreset(struct ata_link
*link
, unsigned int *class,
1344 unsigned long deadline
)
1346 const unsigned long *timing
= sata_ehc_deb_timing(&link
->eh_context
);
1347 struct ata_port
*ap
= link
->ap
;
1348 struct ahci_port_priv
*pp
= ap
->private_data
;
1349 u8
*d2h_fis
= pp
->rx_fis
+ RX_FIS_D2H_REG
;
1350 struct ata_taskfile tf
;
1356 ahci_stop_engine(ap
);
1358 /* clear D2H reception area to properly wait for D2H FIS */
1359 ata_tf_init(link
->device
, &tf
);
1361 ata_tf_to_fis(&tf
, 0, 0, d2h_fis
);
1363 rc
= sata_link_hardreset(link
, timing
, deadline
, &online
,
1366 ahci_start_engine(ap
);
1368 *class = ATA_DEV_NONE
;
1370 *class = ahci_dev_classify(ap
);
1372 DPRINTK("EXIT, rc=%d, class=%u\n", rc
, *class);
1376 static int ahci_vt8251_hardreset(struct ata_link
*link
, unsigned int *class,
1377 unsigned long deadline
)
1379 struct ata_port
*ap
= link
->ap
;
1386 ahci_stop_engine(ap
);
1388 rc
= sata_link_hardreset(link
, sata_ehc_deb_timing(&link
->eh_context
),
1389 deadline
, &online
, NULL
);
1391 /* vt8251 needs SError cleared for the port to operate */
1392 ahci_scr_read(ap
, SCR_ERROR
, &serror
);
1393 ahci_scr_write(ap
, SCR_ERROR
, serror
);
1395 ahci_start_engine(ap
);
1397 DPRINTK("EXIT, rc=%d, class=%u\n", rc
, *class);
1399 /* vt8251 doesn't clear BSY on signature FIS reception,
1400 * request follow-up softreset.
1402 *class = ATA_DEV_NONE
;
1403 return online
? -EAGAIN
: rc
;
1406 static int ahci_p5wdh_hardreset(struct ata_link
*link
, unsigned int *class,
1407 unsigned long deadline
)
1409 struct ata_port
*ap
= link
->ap
;
1410 struct ahci_port_priv
*pp
= ap
->private_data
;
1411 u8
*d2h_fis
= pp
->rx_fis
+ RX_FIS_D2H_REG
;
1412 struct ata_taskfile tf
;
1416 ahci_stop_engine(ap
);
1418 /* clear D2H reception area to properly wait for D2H FIS */
1419 ata_tf_init(link
->device
, &tf
);
1421 ata_tf_to_fis(&tf
, 0, 0, d2h_fis
);
1423 rc
= sata_link_hardreset(link
, sata_ehc_deb_timing(&link
->eh_context
),
1424 deadline
, &online
, NULL
);
1426 ahci_start_engine(ap
);
1428 /* The pseudo configuration device on SIMG4726 attached to
1429 * ASUS P5W-DH Deluxe doesn't send signature FIS after
1430 * hardreset if no device is attached to the first downstream
1431 * port && the pseudo device locks up on SRST w/ PMP==0. To
1432 * work around this, wait for !BSY only briefly. If BSY isn't
1433 * cleared, perform CLO and proceed to IDENTIFY (achieved by
1434 * ATA_LFLAG_NO_SRST and ATA_LFLAG_ASSUME_ATA).
1436 * Wait for two seconds. Devices attached to downstream port
1437 * which can't process the following IDENTIFY after this will
1438 * have to be reset again. For most cases, this should
1439 * suffice while making probing snappish enough.
1442 rc
= ata_wait_after_reset(link
, jiffies
+ 2 * HZ
,
1445 ahci_kick_engine(ap
, 0);
1447 *class = ATA_DEV_NONE
;
1451 static void ahci_postreset(struct ata_link
*link
, unsigned int *class)
1453 struct ata_port
*ap
= link
->ap
;
1454 void __iomem
*port_mmio
= ahci_port_base(ap
);
1457 ata_std_postreset(link
, class);
1459 /* Make sure port's ATAPI bit is set appropriately */
1460 new_tmp
= tmp
= readl(port_mmio
+ PORT_CMD
);
1461 if (*class == ATA_DEV_ATAPI
)
1462 new_tmp
|= PORT_CMD_ATAPI
;
1464 new_tmp
&= ~PORT_CMD_ATAPI
;
1465 if (new_tmp
!= tmp
) {
1466 writel(new_tmp
, port_mmio
+ PORT_CMD
);
1467 readl(port_mmio
+ PORT_CMD
); /* flush */
1471 static int ahci_pmp_softreset(struct ata_link
*link
, unsigned int *class,
1472 unsigned long deadline
)
1474 return ahci_do_softreset(link
, class, link
->pmp
, deadline
);
1477 static u8
ahci_check_status(struct ata_port
*ap
)
1479 void __iomem
*mmio
= ap
->ioaddr
.cmd_addr
;
1481 return readl(mmio
+ PORT_TFDATA
) & 0xFF;
1484 static void ahci_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
)
1486 struct ahci_port_priv
*pp
= ap
->private_data
;
1487 u8
*d2h_fis
= pp
->rx_fis
+ RX_FIS_D2H_REG
;
1489 ata_tf_from_fis(d2h_fis
, tf
);
1492 static unsigned int ahci_fill_sg(struct ata_queued_cmd
*qc
, void *cmd_tbl
)
1494 struct scatterlist
*sg
;
1495 struct ahci_sg
*ahci_sg
= cmd_tbl
+ AHCI_CMD_TBL_HDR_SZ
;
1501 * Next, the S/G list.
1503 for_each_sg(qc
->sg
, sg
, qc
->n_elem
, si
) {
1504 dma_addr_t addr
= sg_dma_address(sg
);
1505 u32 sg_len
= sg_dma_len(sg
);
1507 ahci_sg
[si
].addr
= cpu_to_le32(addr
& 0xffffffff);
1508 ahci_sg
[si
].addr_hi
= cpu_to_le32((addr
>> 16) >> 16);
1509 ahci_sg
[si
].flags_size
= cpu_to_le32(sg_len
- 1);
1515 static void ahci_qc_prep(struct ata_queued_cmd
*qc
)
1517 struct ata_port
*ap
= qc
->ap
;
1518 struct ahci_port_priv
*pp
= ap
->private_data
;
1519 int is_atapi
= ata_is_atapi(qc
->tf
.protocol
);
1522 const u32 cmd_fis_len
= 5; /* five dwords */
1523 unsigned int n_elem
;
1526 * Fill in command table information. First, the header,
1527 * a SATA Register - Host to Device command FIS.
1529 cmd_tbl
= pp
->cmd_tbl
+ qc
->tag
* AHCI_CMD_TBL_SZ
;
1531 ata_tf_to_fis(&qc
->tf
, qc
->dev
->link
->pmp
, 1, cmd_tbl
);
1533 memset(cmd_tbl
+ AHCI_CMD_TBL_CDB
, 0, 32);
1534 memcpy(cmd_tbl
+ AHCI_CMD_TBL_CDB
, qc
->cdb
, qc
->dev
->cdb_len
);
1538 if (qc
->flags
& ATA_QCFLAG_DMAMAP
)
1539 n_elem
= ahci_fill_sg(qc
, cmd_tbl
);
1542 * Fill in command slot information.
1544 opts
= cmd_fis_len
| n_elem
<< 16 | (qc
->dev
->link
->pmp
<< 12);
1545 if (qc
->tf
.flags
& ATA_TFLAG_WRITE
)
1546 opts
|= AHCI_CMD_WRITE
;
1548 opts
|= AHCI_CMD_ATAPI
| AHCI_CMD_PREFETCH
;
1550 ahci_fill_cmd_slot(pp
, qc
->tag
, opts
);
1553 static void ahci_error_intr(struct ata_port
*ap
, u32 irq_stat
)
1555 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
1556 struct ahci_port_priv
*pp
= ap
->private_data
;
1557 struct ata_eh_info
*host_ehi
= &ap
->link
.eh_info
;
1558 struct ata_link
*link
= NULL
;
1559 struct ata_queued_cmd
*active_qc
;
1560 struct ata_eh_info
*active_ehi
;
1563 /* determine active link */
1564 ata_port_for_each_link(link
, ap
)
1565 if (ata_link_active(link
))
1570 active_qc
= ata_qc_from_tag(ap
, link
->active_tag
);
1571 active_ehi
= &link
->eh_info
;
1573 /* record irq stat */
1574 ata_ehi_clear_desc(host_ehi
);
1575 ata_ehi_push_desc(host_ehi
, "irq_stat 0x%08x", irq_stat
);
1577 /* AHCI needs SError cleared; otherwise, it might lock up */
1578 ahci_scr_read(ap
, SCR_ERROR
, &serror
);
1579 ahci_scr_write(ap
, SCR_ERROR
, serror
);
1580 host_ehi
->serror
|= serror
;
1582 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
1583 if (hpriv
->flags
& AHCI_HFLAG_IGN_IRQ_IF_ERR
)
1584 irq_stat
&= ~PORT_IRQ_IF_ERR
;
1586 if (irq_stat
& PORT_IRQ_TF_ERR
) {
1587 /* If qc is active, charge it; otherwise, the active
1588 * link. There's no active qc on NCQ errors. It will
1589 * be determined by EH by reading log page 10h.
1592 active_qc
->err_mask
|= AC_ERR_DEV
;
1594 active_ehi
->err_mask
|= AC_ERR_DEV
;
1596 if (hpriv
->flags
& AHCI_HFLAG_IGN_SERR_INTERNAL
)
1597 host_ehi
->serror
&= ~SERR_INTERNAL
;
1600 if (irq_stat
& PORT_IRQ_UNK_FIS
) {
1601 u32
*unk
= (u32
*)(pp
->rx_fis
+ RX_FIS_UNK
);
1603 active_ehi
->err_mask
|= AC_ERR_HSM
;
1604 active_ehi
->action
|= ATA_EH_RESET
;
1605 ata_ehi_push_desc(active_ehi
,
1606 "unknown FIS %08x %08x %08x %08x" ,
1607 unk
[0], unk
[1], unk
[2], unk
[3]);
1610 if (ap
->nr_pmp_links
&& (irq_stat
& PORT_IRQ_BAD_PMP
)) {
1611 active_ehi
->err_mask
|= AC_ERR_HSM
;
1612 active_ehi
->action
|= ATA_EH_RESET
;
1613 ata_ehi_push_desc(active_ehi
, "incorrect PMP");
1616 if (irq_stat
& (PORT_IRQ_HBUS_ERR
| PORT_IRQ_HBUS_DATA_ERR
)) {
1617 host_ehi
->err_mask
|= AC_ERR_HOST_BUS
;
1618 host_ehi
->action
|= ATA_EH_RESET
;
1619 ata_ehi_push_desc(host_ehi
, "host bus error");
1622 if (irq_stat
& PORT_IRQ_IF_ERR
) {
1623 host_ehi
->err_mask
|= AC_ERR_ATA_BUS
;
1624 host_ehi
->action
|= ATA_EH_RESET
;
1625 ata_ehi_push_desc(host_ehi
, "interface fatal error");
1628 if (irq_stat
& (PORT_IRQ_CONNECT
| PORT_IRQ_PHYRDY
)) {
1629 ata_ehi_hotplugged(host_ehi
);
1630 ata_ehi_push_desc(host_ehi
, "%s",
1631 irq_stat
& PORT_IRQ_CONNECT
?
1632 "connection status changed" : "PHY RDY changed");
1635 /* okay, let's hand over to EH */
1637 if (irq_stat
& PORT_IRQ_FREEZE
)
1638 ata_port_freeze(ap
);
1643 static void ahci_port_intr(struct ata_port
*ap
)
1645 void __iomem
*port_mmio
= ap
->ioaddr
.cmd_addr
;
1646 struct ata_eh_info
*ehi
= &ap
->link
.eh_info
;
1647 struct ahci_port_priv
*pp
= ap
->private_data
;
1648 struct ahci_host_priv
*hpriv
= ap
->host
->private_data
;
1649 int resetting
= !!(ap
->pflags
& ATA_PFLAG_RESETTING
);
1650 u32 status
, qc_active
;
1653 status
= readl(port_mmio
+ PORT_IRQ_STAT
);
1654 writel(status
, port_mmio
+ PORT_IRQ_STAT
);
1656 /* ignore BAD_PMP while resetting */
1657 if (unlikely(resetting
))
1658 status
&= ~PORT_IRQ_BAD_PMP
;
1660 /* If we are getting PhyRdy, this is
1661 * just a power state change, we should
1662 * clear out this, plus the PhyRdy/Comm
1663 * Wake bits from Serror
1665 if ((hpriv
->flags
& AHCI_HFLAG_NO_HOTPLUG
) &&
1666 (status
& PORT_IRQ_PHYRDY
)) {
1667 status
&= ~PORT_IRQ_PHYRDY
;
1668 ahci_scr_write(ap
, SCR_ERROR
, ((1 << 16) | (1 << 18)));
1671 if (unlikely(status
& PORT_IRQ_ERROR
)) {
1672 ahci_error_intr(ap
, status
);
1676 if (status
& PORT_IRQ_SDB_FIS
) {
1677 /* If SNotification is available, leave notification
1678 * handling to sata_async_notification(). If not,
1679 * emulate it by snooping SDB FIS RX area.
1681 * Snooping FIS RX area is probably cheaper than
1682 * poking SNotification but some constrollers which
1683 * implement SNotification, ICH9 for example, don't
1684 * store AN SDB FIS into receive area.
1686 if (hpriv
->cap
& HOST_CAP_SNTF
)
1687 sata_async_notification(ap
);
1689 /* If the 'N' bit in word 0 of the FIS is set,
1690 * we just received asynchronous notification.
1691 * Tell libata about it.
1693 const __le32
*f
= pp
->rx_fis
+ RX_FIS_SDB
;
1694 u32 f0
= le32_to_cpu(f
[0]);
1697 sata_async_notification(ap
);
1701 /* pp->active_link is valid iff any command is in flight */
1702 if (ap
->qc_active
&& pp
->active_link
->sactive
)
1703 qc_active
= readl(port_mmio
+ PORT_SCR_ACT
);
1705 qc_active
= readl(port_mmio
+ PORT_CMD_ISSUE
);
1707 rc
= ata_qc_complete_multiple(ap
, qc_active
, NULL
);
1709 /* while resetting, invalid completions are expected */
1710 if (unlikely(rc
< 0 && !resetting
)) {
1711 ehi
->err_mask
|= AC_ERR_HSM
;
1712 ehi
->action
|= ATA_EH_RESET
;
1713 ata_port_freeze(ap
);
1717 static irqreturn_t
ahci_interrupt(int irq
, void *dev_instance
)
1719 struct ata_host
*host
= dev_instance
;
1720 struct ahci_host_priv
*hpriv
;
1721 unsigned int i
, handled
= 0;
1723 u32 irq_stat
, irq_ack
= 0;
1727 hpriv
= host
->private_data
;
1728 mmio
= host
->iomap
[AHCI_PCI_BAR
];
1730 /* sigh. 0xffffffff is a valid return from h/w */
1731 irq_stat
= readl(mmio
+ HOST_IRQ_STAT
);
1732 irq_stat
&= hpriv
->port_map
;
1736 spin_lock(&host
->lock
);
1738 for (i
= 0; i
< host
->n_ports
; i
++) {
1739 struct ata_port
*ap
;
1741 if (!(irq_stat
& (1 << i
)))
1744 ap
= host
->ports
[i
];
1747 VPRINTK("port %u\n", i
);
1749 VPRINTK("port %u (no irq)\n", i
);
1750 if (ata_ratelimit())
1751 dev_printk(KERN_WARNING
, host
->dev
,
1752 "interrupt on disabled port %u\n", i
);
1755 irq_ack
|= (1 << i
);
1759 writel(irq_ack
, mmio
+ HOST_IRQ_STAT
);
1763 spin_unlock(&host
->lock
);
1767 return IRQ_RETVAL(handled
);
1770 static unsigned int ahci_qc_issue(struct ata_queued_cmd
*qc
)
1772 struct ata_port
*ap
= qc
->ap
;
1773 void __iomem
*port_mmio
= ahci_port_base(ap
);
1774 struct ahci_port_priv
*pp
= ap
->private_data
;
1776 /* Keep track of the currently active link. It will be used
1777 * in completion path to determine whether NCQ phase is in
1780 pp
->active_link
= qc
->dev
->link
;
1782 if (qc
->tf
.protocol
== ATA_PROT_NCQ
)
1783 writel(1 << qc
->tag
, port_mmio
+ PORT_SCR_ACT
);
1784 writel(1 << qc
->tag
, port_mmio
+ PORT_CMD_ISSUE
);
1785 readl(port_mmio
+ PORT_CMD_ISSUE
); /* flush */
1790 static void ahci_freeze(struct ata_port
*ap
)
1792 void __iomem
*port_mmio
= ahci_port_base(ap
);
1795 writel(0, port_mmio
+ PORT_IRQ_MASK
);
1798 static void ahci_thaw(struct ata_port
*ap
)
1800 void __iomem
*mmio
= ap
->host
->iomap
[AHCI_PCI_BAR
];
1801 void __iomem
*port_mmio
= ahci_port_base(ap
);
1803 struct ahci_port_priv
*pp
= ap
->private_data
;
1806 tmp
= readl(port_mmio
+ PORT_IRQ_STAT
);
1807 writel(tmp
, port_mmio
+ PORT_IRQ_STAT
);
1808 writel(1 << ap
->port_no
, mmio
+ HOST_IRQ_STAT
);
1810 /* turn IRQ back on */
1811 writel(pp
->intr_mask
, port_mmio
+ PORT_IRQ_MASK
);
1814 static void ahci_error_handler(struct ata_port
*ap
)
1816 if (!(ap
->pflags
& ATA_PFLAG_FROZEN
)) {
1817 /* restart engine */
1818 ahci_stop_engine(ap
);
1819 ahci_start_engine(ap
);
1822 sata_pmp_error_handler(ap
);
1825 static void ahci_post_internal_cmd(struct ata_queued_cmd
*qc
)
1827 struct ata_port
*ap
= qc
->ap
;
1829 /* make DMA engine forget about the failed command */
1830 if (qc
->flags
& ATA_QCFLAG_FAILED
)
1831 ahci_kick_engine(ap
, 1);
1834 static void ahci_pmp_attach(struct ata_port
*ap
)
1836 void __iomem
*port_mmio
= ahci_port_base(ap
);
1837 struct ahci_port_priv
*pp
= ap
->private_data
;
1840 cmd
= readl(port_mmio
+ PORT_CMD
);
1841 cmd
|= PORT_CMD_PMP
;
1842 writel(cmd
, port_mmio
+ PORT_CMD
);
1844 pp
->intr_mask
|= PORT_IRQ_BAD_PMP
;
1845 writel(pp
->intr_mask
, port_mmio
+ PORT_IRQ_MASK
);
1848 static void ahci_pmp_detach(struct ata_port
*ap
)
1850 void __iomem
*port_mmio
= ahci_port_base(ap
);
1851 struct ahci_port_priv
*pp
= ap
->private_data
;
1854 cmd
= readl(port_mmio
+ PORT_CMD
);
1855 cmd
&= ~PORT_CMD_PMP
;
1856 writel(cmd
, port_mmio
+ PORT_CMD
);
1858 pp
->intr_mask
&= ~PORT_IRQ_BAD_PMP
;
1859 writel(pp
->intr_mask
, port_mmio
+ PORT_IRQ_MASK
);
1862 static int ahci_port_resume(struct ata_port
*ap
)
1865 ahci_start_port(ap
);
1867 if (ap
->nr_pmp_links
)
1868 ahci_pmp_attach(ap
);
1870 ahci_pmp_detach(ap
);
1876 static int ahci_port_suspend(struct ata_port
*ap
, pm_message_t mesg
)
1878 const char *emsg
= NULL
;
1881 rc
= ahci_deinit_port(ap
, &emsg
);
1883 ahci_power_down(ap
);
1885 ata_port_printk(ap
, KERN_ERR
, "%s (%d)\n", emsg
, rc
);
1886 ahci_start_port(ap
);
1892 static int ahci_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
)
1894 struct ata_host
*host
= dev_get_drvdata(&pdev
->dev
);
1895 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
1898 if (mesg
.event
& PM_EVENT_SLEEP
) {
1899 /* AHCI spec rev1.1 section 8.3.3:
1900 * Software must disable interrupts prior to requesting a
1901 * transition of the HBA to D3 state.
1903 ctl
= readl(mmio
+ HOST_CTL
);
1904 ctl
&= ~HOST_IRQ_EN
;
1905 writel(ctl
, mmio
+ HOST_CTL
);
1906 readl(mmio
+ HOST_CTL
); /* flush */
1909 return ata_pci_device_suspend(pdev
, mesg
);
1912 static int ahci_pci_device_resume(struct pci_dev
*pdev
)
1914 struct ata_host
*host
= dev_get_drvdata(&pdev
->dev
);
1917 rc
= ata_pci_device_do_resume(pdev
);
1921 if (pdev
->dev
.power
.power_state
.event
== PM_EVENT_SUSPEND
) {
1922 rc
= ahci_reset_controller(host
);
1926 ahci_init_controller(host
);
1929 ata_host_resume(host
);
1935 static int ahci_port_start(struct ata_port
*ap
)
1937 struct device
*dev
= ap
->host
->dev
;
1938 struct ahci_port_priv
*pp
;
1942 pp
= devm_kzalloc(dev
, sizeof(*pp
), GFP_KERNEL
);
1946 mem
= dmam_alloc_coherent(dev
, AHCI_PORT_PRIV_DMA_SZ
, &mem_dma
,
1950 memset(mem
, 0, AHCI_PORT_PRIV_DMA_SZ
);
1953 * First item in chunk of DMA memory: 32-slot command table,
1954 * 32 bytes each in size
1957 pp
->cmd_slot_dma
= mem_dma
;
1959 mem
+= AHCI_CMD_SLOT_SZ
;
1960 mem_dma
+= AHCI_CMD_SLOT_SZ
;
1963 * Second item: Received-FIS area
1966 pp
->rx_fis_dma
= mem_dma
;
1968 mem
+= AHCI_RX_FIS_SZ
;
1969 mem_dma
+= AHCI_RX_FIS_SZ
;
1972 * Third item: data area for storing a single command
1973 * and its scatter-gather table
1976 pp
->cmd_tbl_dma
= mem_dma
;
1979 * Save off initial list of interrupts to be enabled.
1980 * This could be changed later
1982 pp
->intr_mask
= DEF_PORT_IRQ
;
1984 ap
->private_data
= pp
;
1986 /* engage engines, captain */
1987 return ahci_port_resume(ap
);
1990 static void ahci_port_stop(struct ata_port
*ap
)
1992 const char *emsg
= NULL
;
1995 /* de-initialize port */
1996 rc
= ahci_deinit_port(ap
, &emsg
);
1998 ata_port_printk(ap
, KERN_WARNING
, "%s (%d)\n", emsg
, rc
);
2001 static int ahci_configure_dma_masks(struct pci_dev
*pdev
, int using_dac
)
2006 !pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) {
2007 rc
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
2009 rc
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
2011 dev_printk(KERN_ERR
, &pdev
->dev
,
2012 "64-bit DMA enable failed\n");
2017 rc
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
2019 dev_printk(KERN_ERR
, &pdev
->dev
,
2020 "32-bit DMA enable failed\n");
2023 rc
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
2025 dev_printk(KERN_ERR
, &pdev
->dev
,
2026 "32-bit consistent DMA enable failed\n");
2033 static void ahci_print_info(struct ata_host
*host
)
2035 struct ahci_host_priv
*hpriv
= host
->private_data
;
2036 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
2037 void __iomem
*mmio
= host
->iomap
[AHCI_PCI_BAR
];
2038 u32 vers
, cap
, impl
, speed
;
2039 const char *speed_s
;
2043 vers
= readl(mmio
+ HOST_VERSION
);
2045 impl
= hpriv
->port_map
;
2047 speed
= (cap
>> 20) & 0xf;
2050 else if (speed
== 2)
2055 pci_read_config_word(pdev
, 0x0a, &cc
);
2056 if (cc
== PCI_CLASS_STORAGE_IDE
)
2058 else if (cc
== PCI_CLASS_STORAGE_SATA
)
2060 else if (cc
== PCI_CLASS_STORAGE_RAID
)
2065 dev_printk(KERN_INFO
, &pdev
->dev
,
2066 "AHCI %02x%02x.%02x%02x "
2067 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
2070 (vers
>> 24) & 0xff,
2071 (vers
>> 16) & 0xff,
2075 ((cap
>> 8) & 0x1f) + 1,
2081 dev_printk(KERN_INFO
, &pdev
->dev
,
2087 cap
& (1 << 31) ? "64bit " : "",
2088 cap
& (1 << 30) ? "ncq " : "",
2089 cap
& (1 << 29) ? "sntf " : "",
2090 cap
& (1 << 28) ? "ilck " : "",
2091 cap
& (1 << 27) ? "stag " : "",
2092 cap
& (1 << 26) ? "pm " : "",
2093 cap
& (1 << 25) ? "led " : "",
2095 cap
& (1 << 24) ? "clo " : "",
2096 cap
& (1 << 19) ? "nz " : "",
2097 cap
& (1 << 18) ? "only " : "",
2098 cap
& (1 << 17) ? "pmp " : "",
2099 cap
& (1 << 15) ? "pio " : "",
2100 cap
& (1 << 14) ? "slum " : "",
2101 cap
& (1 << 13) ? "part " : ""
2105 /* On ASUS P5W DH Deluxe, the second port of PCI device 00:1f.2 is
2106 * hardwired to on-board SIMG 4726. The chipset is ICH8 and doesn't
2107 * support PMP and the 4726 either directly exports the device
2108 * attached to the first downstream port or acts as a hardware storage
2109 * controller and emulate a single ATA device (can be RAID 0/1 or some
2110 * other configuration).
2112 * When there's no device attached to the first downstream port of the
2113 * 4726, "Config Disk" appears, which is a pseudo ATA device to
2114 * configure the 4726. However, ATA emulation of the device is very
2115 * lame. It doesn't send signature D2H Reg FIS after the initial
2116 * hardreset, pukes on SRST w/ PMP==0 and has bunch of other issues.
2118 * The following function works around the problem by always using
2119 * hardreset on the port and not depending on receiving signature FIS
2120 * afterward. If signature FIS isn't received soon, ATA class is
2121 * assumed without follow-up softreset.
2123 static void ahci_p5wdh_workaround(struct ata_host
*host
)
2125 static struct dmi_system_id sysids
[] = {
2127 .ident
= "P5W DH Deluxe",
2129 DMI_MATCH(DMI_SYS_VENDOR
,
2130 "ASUSTEK COMPUTER INC"),
2131 DMI_MATCH(DMI_PRODUCT_NAME
, "P5W DH Deluxe"),
2136 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
2138 if (pdev
->bus
->number
== 0 && pdev
->devfn
== PCI_DEVFN(0x1f, 2) &&
2139 dmi_check_system(sysids
)) {
2140 struct ata_port
*ap
= host
->ports
[1];
2142 dev_printk(KERN_INFO
, &pdev
->dev
, "enabling ASUS P5W DH "
2143 "Deluxe on-board SIMG4726 workaround\n");
2145 ap
->ops
= &ahci_p5wdh_ops
;
2146 ap
->link
.flags
|= ATA_LFLAG_NO_SRST
| ATA_LFLAG_ASSUME_ATA
;
2150 static int ahci_init_one(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
2152 static int printed_version
;
2153 struct ata_port_info pi
= ahci_port_info
[ent
->driver_data
];
2154 const struct ata_port_info
*ppi
[] = { &pi
, NULL
};
2155 struct device
*dev
= &pdev
->dev
;
2156 struct ahci_host_priv
*hpriv
;
2157 struct ata_host
*host
;
2162 WARN_ON(ATA_MAX_QUEUE
> AHCI_MAX_CMDS
);
2164 if (!printed_version
++)
2165 dev_printk(KERN_DEBUG
, &pdev
->dev
, "version " DRV_VERSION
"\n");
2167 /* acquire resources */
2168 rc
= pcim_enable_device(pdev
);
2172 /* AHCI controllers often implement SFF compatible interface.
2173 * Grab all PCI BARs just in case.
2175 rc
= pcim_iomap_regions_request_all(pdev
, 1 << AHCI_PCI_BAR
, DRV_NAME
);
2177 pcim_pin_device(pdev
);
2181 if (pdev
->vendor
== PCI_VENDOR_ID_INTEL
&&
2182 (pdev
->device
== 0x2652 || pdev
->device
== 0x2653)) {
2185 /* ICH6s share the same PCI ID for both piix and ahci
2186 * modes. Enabling ahci mode while MAP indicates
2187 * combined mode is a bad idea. Yield to ata_piix.
2189 pci_read_config_byte(pdev
, ICH_MAP
, &map
);
2191 dev_printk(KERN_INFO
, &pdev
->dev
, "controller is in "
2192 "combined mode, can't enable AHCI mode\n");
2197 hpriv
= devm_kzalloc(dev
, sizeof(*hpriv
), GFP_KERNEL
);
2200 hpriv
->flags
|= (unsigned long)pi
.private_data
;
2202 if ((hpriv
->flags
& AHCI_HFLAG_NO_MSI
) || pci_enable_msi(pdev
))
2205 /* save initial config */
2206 ahci_save_initial_config(pdev
, hpriv
);
2209 if (hpriv
->cap
& HOST_CAP_NCQ
)
2210 pi
.flags
|= ATA_FLAG_NCQ
;
2212 if (hpriv
->cap
& HOST_CAP_PMP
)
2213 pi
.flags
|= ATA_FLAG_PMP
;
2215 /* CAP.NP sometimes indicate the index of the last enabled
2216 * port, at other times, that of the last possible port, so
2217 * determining the maximum port number requires looking at
2218 * both CAP.NP and port_map.
2220 n_ports
= max(ahci_nr_ports(hpriv
->cap
), fls(hpriv
->port_map
));
2222 host
= ata_host_alloc_pinfo(&pdev
->dev
, ppi
, n_ports
);
2225 host
->iomap
= pcim_iomap_table(pdev
);
2226 host
->private_data
= hpriv
;
2228 for (i
= 0; i
< host
->n_ports
; i
++) {
2229 struct ata_port
*ap
= host
->ports
[i
];
2230 void __iomem
*port_mmio
= ahci_port_base(ap
);
2232 ata_port_pbar_desc(ap
, AHCI_PCI_BAR
, -1, "abar");
2233 ata_port_pbar_desc(ap
, AHCI_PCI_BAR
,
2234 0x100 + ap
->port_no
* 0x80, "port");
2236 /* set initial link pm policy */
2237 ap
->pm_policy
= NOT_AVAILABLE
;
2239 /* standard SATA port setup */
2240 if (hpriv
->port_map
& (1 << i
))
2241 ap
->ioaddr
.cmd_addr
= port_mmio
;
2243 /* disabled/not-implemented port */
2245 ap
->ops
= &ata_dummy_port_ops
;
2248 /* apply workaround for ASUS P5W DH Deluxe mainboard */
2249 ahci_p5wdh_workaround(host
);
2251 /* initialize adapter */
2252 rc
= ahci_configure_dma_masks(pdev
, hpriv
->cap
& HOST_CAP_64
);
2256 rc
= ahci_reset_controller(host
);
2260 ahci_init_controller(host
);
2261 ahci_print_info(host
);
2263 pci_set_master(pdev
);
2264 return ata_host_activate(host
, pdev
->irq
, ahci_interrupt
, IRQF_SHARED
,
2268 static int __init
ahci_init(void)
2270 return pci_register_driver(&ahci_pci_driver
);
2273 static void __exit
ahci_exit(void)
2275 pci_unregister_driver(&ahci_pci_driver
);
2279 MODULE_AUTHOR("Jeff Garzik");
2280 MODULE_DESCRIPTION("AHCI SATA low-level driver");
2281 MODULE_LICENSE("GPL");
2282 MODULE_DEVICE_TABLE(pci
, ahci_pci_tbl
);
2283 MODULE_VERSION(DRV_VERSION
);
2285 module_init(ahci_init
);
2286 module_exit(ahci_exit
);