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/sched.h>
43 #include <linux/dma-mapping.h>
44 #include <linux/device.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_cmnd.h>
47 #include <linux/libata.h>
50 #define DRV_NAME "ahci"
51 #define DRV_VERSION "2.0"
56 AHCI_MAX_SG
= 168, /* hardware max is 64K */
57 AHCI_DMA_BOUNDARY
= 0xffffffff,
58 AHCI_USE_CLUSTERING
= 0,
61 AHCI_CMD_SLOT_SZ
= AHCI_MAX_CMDS
* AHCI_CMD_SZ
,
63 AHCI_CMD_TBL_CDB
= 0x40,
64 AHCI_CMD_TBL_HDR_SZ
= 0x80,
65 AHCI_CMD_TBL_SZ
= AHCI_CMD_TBL_HDR_SZ
+ (AHCI_MAX_SG
* 16),
66 AHCI_CMD_TBL_AR_SZ
= AHCI_CMD_TBL_SZ
* AHCI_MAX_CMDS
,
67 AHCI_PORT_PRIV_DMA_SZ
= AHCI_CMD_SLOT_SZ
+ AHCI_CMD_TBL_AR_SZ
+
69 AHCI_IRQ_ON_SG
= (1 << 31),
70 AHCI_CMD_ATAPI
= (1 << 5),
71 AHCI_CMD_WRITE
= (1 << 6),
72 AHCI_CMD_PREFETCH
= (1 << 7),
73 AHCI_CMD_RESET
= (1 << 8),
74 AHCI_CMD_CLR_BUSY
= (1 << 10),
76 RX_FIS_D2H_REG
= 0x40, /* offset of D2H Register FIS data */
77 RX_FIS_UNK
= 0x60, /* offset of Unknown FIS data */
80 board_ahci_vt8251
= 1,
82 /* global controller registers */
83 HOST_CAP
= 0x00, /* host capabilities */
84 HOST_CTL
= 0x04, /* global host control */
85 HOST_IRQ_STAT
= 0x08, /* interrupt status */
86 HOST_PORTS_IMPL
= 0x0c, /* bitmap of implemented ports */
87 HOST_VERSION
= 0x10, /* AHCI spec. version compliancy */
90 HOST_RESET
= (1 << 0), /* reset controller; self-clear */
91 HOST_IRQ_EN
= (1 << 1), /* global IRQ enable */
92 HOST_AHCI_EN
= (1 << 31), /* AHCI enabled */
95 HOST_CAP_CLO
= (1 << 24), /* Command List Override support */
96 HOST_CAP_NCQ
= (1 << 30), /* Native Command Queueing */
97 HOST_CAP_64
= (1 << 31), /* PCI DAC (64-bit DMA) support */
99 /* registers for each SATA port */
100 PORT_LST_ADDR
= 0x00, /* command list DMA addr */
101 PORT_LST_ADDR_HI
= 0x04, /* command list DMA addr hi */
102 PORT_FIS_ADDR
= 0x08, /* FIS rx buf addr */
103 PORT_FIS_ADDR_HI
= 0x0c, /* FIS rx buf addr hi */
104 PORT_IRQ_STAT
= 0x10, /* interrupt status */
105 PORT_IRQ_MASK
= 0x14, /* interrupt enable/disable mask */
106 PORT_CMD
= 0x18, /* port command */
107 PORT_TFDATA
= 0x20, /* taskfile data */
108 PORT_SIG
= 0x24, /* device TF signature */
109 PORT_CMD_ISSUE
= 0x38, /* command issue */
110 PORT_SCR
= 0x28, /* SATA phy register block */
111 PORT_SCR_STAT
= 0x28, /* SATA phy register: SStatus */
112 PORT_SCR_CTL
= 0x2c, /* SATA phy register: SControl */
113 PORT_SCR_ERR
= 0x30, /* SATA phy register: SError */
114 PORT_SCR_ACT
= 0x34, /* SATA phy register: SActive */
116 /* PORT_IRQ_{STAT,MASK} bits */
117 PORT_IRQ_COLD_PRES
= (1 << 31), /* cold presence detect */
118 PORT_IRQ_TF_ERR
= (1 << 30), /* task file error */
119 PORT_IRQ_HBUS_ERR
= (1 << 29), /* host bus fatal error */
120 PORT_IRQ_HBUS_DATA_ERR
= (1 << 28), /* host bus data error */
121 PORT_IRQ_IF_ERR
= (1 << 27), /* interface fatal error */
122 PORT_IRQ_IF_NONFATAL
= (1 << 26), /* interface non-fatal error */
123 PORT_IRQ_OVERFLOW
= (1 << 24), /* xfer exhausted available S/G */
124 PORT_IRQ_BAD_PMP
= (1 << 23), /* incorrect port multiplier */
126 PORT_IRQ_PHYRDY
= (1 << 22), /* PhyRdy changed */
127 PORT_IRQ_DEV_ILCK
= (1 << 7), /* device interlock */
128 PORT_IRQ_CONNECT
= (1 << 6), /* port connect change status */
129 PORT_IRQ_SG_DONE
= (1 << 5), /* descriptor processed */
130 PORT_IRQ_UNK_FIS
= (1 << 4), /* unknown FIS rx'd */
131 PORT_IRQ_SDB_FIS
= (1 << 3), /* Set Device Bits FIS rx'd */
132 PORT_IRQ_DMAS_FIS
= (1 << 2), /* DMA Setup FIS rx'd */
133 PORT_IRQ_PIOS_FIS
= (1 << 1), /* PIO Setup FIS rx'd */
134 PORT_IRQ_D2H_REG_FIS
= (1 << 0), /* D2H Register FIS rx'd */
136 PORT_IRQ_FREEZE
= PORT_IRQ_HBUS_ERR
|
141 PORT_IRQ_ERROR
= PORT_IRQ_FREEZE
|
143 PORT_IRQ_HBUS_DATA_ERR
,
144 DEF_PORT_IRQ
= PORT_IRQ_ERROR
| PORT_IRQ_SG_DONE
|
145 PORT_IRQ_SDB_FIS
| PORT_IRQ_DMAS_FIS
|
146 PORT_IRQ_PIOS_FIS
| PORT_IRQ_D2H_REG_FIS
,
149 PORT_CMD_ATAPI
= (1 << 24), /* Device is ATAPI */
150 PORT_CMD_LIST_ON
= (1 << 15), /* cmd list DMA engine running */
151 PORT_CMD_FIS_ON
= (1 << 14), /* FIS DMA engine running */
152 PORT_CMD_FIS_RX
= (1 << 4), /* Enable FIS receive DMA engine */
153 PORT_CMD_CLO
= (1 << 3), /* Command list override */
154 PORT_CMD_POWER_ON
= (1 << 2), /* Power up device */
155 PORT_CMD_SPIN_UP
= (1 << 1), /* Spin up device */
156 PORT_CMD_START
= (1 << 0), /* Enable port DMA engine */
158 PORT_CMD_ICC_ACTIVE
= (0x1 << 28), /* Put i/f in active state */
159 PORT_CMD_ICC_PARTIAL
= (0x2 << 28), /* Put i/f in partial state */
160 PORT_CMD_ICC_SLUMBER
= (0x6 << 28), /* Put i/f in slumber state */
162 /* hpriv->flags bits */
163 AHCI_FLAG_MSI
= (1 << 0),
166 AHCI_FLAG_RESET_NEEDS_CLO
= (1 << 24),
167 AHCI_FLAG_NO_NCQ
= (1 << 25),
170 struct ahci_cmd_hdr
{
185 struct ahci_host_priv
{
187 u32 cap
; /* cache of HOST_CAP register */
188 u32 port_map
; /* cache of HOST_PORTS_IMPL reg */
191 struct ahci_port_priv
{
192 struct ahci_cmd_hdr
*cmd_slot
;
193 dma_addr_t cmd_slot_dma
;
195 dma_addr_t cmd_tbl_dma
;
197 dma_addr_t rx_fis_dma
;
200 static u32
ahci_scr_read (struct ata_port
*ap
, unsigned int sc_reg
);
201 static void ahci_scr_write (struct ata_port
*ap
, unsigned int sc_reg
, u32 val
);
202 static int ahci_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
203 static unsigned int ahci_qc_issue(struct ata_queued_cmd
*qc
);
204 static irqreturn_t
ahci_interrupt (int irq
, void *dev_instance
, struct pt_regs
*regs
);
205 static void ahci_irq_clear(struct ata_port
*ap
);
206 static int ahci_port_start(struct ata_port
*ap
);
207 static void ahci_port_stop(struct ata_port
*ap
);
208 static void ahci_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
);
209 static void ahci_qc_prep(struct ata_queued_cmd
*qc
);
210 static u8
ahci_check_status(struct ata_port
*ap
);
211 static void ahci_freeze(struct ata_port
*ap
);
212 static void ahci_thaw(struct ata_port
*ap
);
213 static void ahci_error_handler(struct ata_port
*ap
);
214 static void ahci_post_internal_cmd(struct ata_queued_cmd
*qc
);
215 static void ahci_remove_one (struct pci_dev
*pdev
);
217 static struct scsi_host_template ahci_sht
= {
218 .module
= THIS_MODULE
,
220 .ioctl
= ata_scsi_ioctl
,
221 .queuecommand
= ata_scsi_queuecmd
,
222 .change_queue_depth
= ata_scsi_change_queue_depth
,
223 .can_queue
= AHCI_MAX_CMDS
- 1,
224 .this_id
= ATA_SHT_THIS_ID
,
225 .sg_tablesize
= AHCI_MAX_SG
,
226 .cmd_per_lun
= ATA_SHT_CMD_PER_LUN
,
227 .emulated
= ATA_SHT_EMULATED
,
228 .use_clustering
= AHCI_USE_CLUSTERING
,
229 .proc_name
= DRV_NAME
,
230 .dma_boundary
= AHCI_DMA_BOUNDARY
,
231 .slave_configure
= ata_scsi_slave_config
,
232 .slave_destroy
= ata_scsi_slave_destroy
,
233 .bios_param
= ata_std_bios_param
,
236 static const struct ata_port_operations ahci_ops
= {
237 .port_disable
= ata_port_disable
,
239 .check_status
= ahci_check_status
,
240 .check_altstatus
= ahci_check_status
,
241 .dev_select
= ata_noop_dev_select
,
243 .tf_read
= ahci_tf_read
,
245 .qc_prep
= ahci_qc_prep
,
246 .qc_issue
= ahci_qc_issue
,
248 .irq_handler
= ahci_interrupt
,
249 .irq_clear
= ahci_irq_clear
,
251 .scr_read
= ahci_scr_read
,
252 .scr_write
= ahci_scr_write
,
254 .freeze
= ahci_freeze
,
257 .error_handler
= ahci_error_handler
,
258 .post_internal_cmd
= ahci_post_internal_cmd
,
260 .port_start
= ahci_port_start
,
261 .port_stop
= ahci_port_stop
,
264 static const struct ata_port_info ahci_port_info
[] = {
268 .host_flags
= ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
|
269 ATA_FLAG_MMIO
| ATA_FLAG_PIO_DMA
|
270 ATA_FLAG_SKIP_D2H_BSY
,
271 .pio_mask
= 0x1f, /* pio0-4 */
272 .udma_mask
= 0x7f, /* udma0-6 ; FIXME */
273 .port_ops
= &ahci_ops
,
275 /* board_ahci_vt8251 */
278 .host_flags
= ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
|
279 ATA_FLAG_MMIO
| ATA_FLAG_PIO_DMA
|
280 ATA_FLAG_SKIP_D2H_BSY
|
281 AHCI_FLAG_RESET_NEEDS_CLO
| AHCI_FLAG_NO_NCQ
,
282 .pio_mask
= 0x1f, /* pio0-4 */
283 .udma_mask
= 0x7f, /* udma0-6 ; FIXME */
284 .port_ops
= &ahci_ops
,
288 static const struct pci_device_id ahci_pci_tbl
[] = {
290 { PCI_VENDOR_ID_INTEL
, 0x2652, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
291 board_ahci
}, /* ICH6 */
292 { PCI_VENDOR_ID_INTEL
, 0x2653, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
293 board_ahci
}, /* ICH6M */
294 { PCI_VENDOR_ID_INTEL
, 0x27c1, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
295 board_ahci
}, /* ICH7 */
296 { PCI_VENDOR_ID_INTEL
, 0x27c5, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
297 board_ahci
}, /* ICH7M */
298 { PCI_VENDOR_ID_INTEL
, 0x27c3, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
299 board_ahci
}, /* ICH7R */
300 { PCI_VENDOR_ID_AL
, 0x5288, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
301 board_ahci
}, /* ULi M5288 */
302 { PCI_VENDOR_ID_INTEL
, 0x2681, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
303 board_ahci
}, /* ESB2 */
304 { PCI_VENDOR_ID_INTEL
, 0x2682, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
305 board_ahci
}, /* ESB2 */
306 { PCI_VENDOR_ID_INTEL
, 0x2683, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
307 board_ahci
}, /* ESB2 */
308 { PCI_VENDOR_ID_INTEL
, 0x27c6, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
309 board_ahci
}, /* ICH7-M DH */
310 { PCI_VENDOR_ID_INTEL
, 0x2821, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
311 board_ahci
}, /* ICH8 */
312 { PCI_VENDOR_ID_INTEL
, 0x2822, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
313 board_ahci
}, /* ICH8 */
314 { PCI_VENDOR_ID_INTEL
, 0x2824, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
315 board_ahci
}, /* ICH8 */
316 { PCI_VENDOR_ID_INTEL
, 0x2829, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
317 board_ahci
}, /* ICH8M */
318 { PCI_VENDOR_ID_INTEL
, 0x282a, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
319 board_ahci
}, /* ICH8M */
322 { 0x197b, 0x2360, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
323 board_ahci
}, /* JMicron JMB360 */
324 { 0x197b, 0x2361, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
325 board_ahci
}, /* JMicron JMB361 */
326 { 0x197b, 0x2363, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
327 board_ahci
}, /* JMicron JMB363 */
328 { 0x197b, 0x2365, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
329 board_ahci
}, /* JMicron JMB365 */
330 { 0x197b, 0x2366, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
331 board_ahci
}, /* JMicron JMB366 */
334 { PCI_VENDOR_ID_ATI
, 0x4380, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
335 board_ahci
}, /* ATI SB600 non-raid */
336 { PCI_VENDOR_ID_ATI
, 0x4381, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
337 board_ahci
}, /* ATI SB600 raid */
340 { PCI_VENDOR_ID_VIA
, 0x3349, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
341 board_ahci_vt8251
}, /* VIA VT8251 */
344 { PCI_VENDOR_ID_NVIDIA
, 0x044c, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
345 board_ahci
}, /* MCP65 */
346 { PCI_VENDOR_ID_NVIDIA
, 0x044d, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
347 board_ahci
}, /* MCP65 */
348 { PCI_VENDOR_ID_NVIDIA
, 0x044e, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
349 board_ahci
}, /* MCP65 */
350 { PCI_VENDOR_ID_NVIDIA
, 0x044f, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
351 board_ahci
}, /* MCP65 */
353 { } /* terminate list */
357 static struct pci_driver ahci_pci_driver
= {
359 .id_table
= ahci_pci_tbl
,
360 .probe
= ahci_init_one
,
361 .remove
= ahci_remove_one
,
365 static inline unsigned long ahci_port_base_ul (unsigned long base
, unsigned int port
)
367 return base
+ 0x100 + (port
* 0x80);
370 static inline void __iomem
*ahci_port_base (void __iomem
*base
, unsigned int port
)
372 return (void __iomem
*) ahci_port_base_ul((unsigned long)base
, port
);
375 static int ahci_port_start(struct ata_port
*ap
)
377 struct device
*dev
= ap
->host_set
->dev
;
378 struct ahci_host_priv
*hpriv
= ap
->host_set
->private_data
;
379 struct ahci_port_priv
*pp
;
380 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
381 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
386 pp
= kmalloc(sizeof(*pp
), GFP_KERNEL
);
389 memset(pp
, 0, sizeof(*pp
));
391 rc
= ata_pad_alloc(ap
, dev
);
397 mem
= dma_alloc_coherent(dev
, AHCI_PORT_PRIV_DMA_SZ
, &mem_dma
, GFP_KERNEL
);
399 ata_pad_free(ap
, dev
);
403 memset(mem
, 0, AHCI_PORT_PRIV_DMA_SZ
);
406 * First item in chunk of DMA memory: 32-slot command table,
407 * 32 bytes each in size
410 pp
->cmd_slot_dma
= mem_dma
;
412 mem
+= AHCI_CMD_SLOT_SZ
;
413 mem_dma
+= AHCI_CMD_SLOT_SZ
;
416 * Second item: Received-FIS area
419 pp
->rx_fis_dma
= mem_dma
;
421 mem
+= AHCI_RX_FIS_SZ
;
422 mem_dma
+= AHCI_RX_FIS_SZ
;
425 * Third item: data area for storing a single command
426 * and its scatter-gather table
429 pp
->cmd_tbl_dma
= mem_dma
;
431 ap
->private_data
= pp
;
433 if (hpriv
->cap
& HOST_CAP_64
)
434 writel((pp
->cmd_slot_dma
>> 16) >> 16, port_mmio
+ PORT_LST_ADDR_HI
);
435 writel(pp
->cmd_slot_dma
& 0xffffffff, port_mmio
+ PORT_LST_ADDR
);
436 readl(port_mmio
+ PORT_LST_ADDR
); /* flush */
438 if (hpriv
->cap
& HOST_CAP_64
)
439 writel((pp
->rx_fis_dma
>> 16) >> 16, port_mmio
+ PORT_FIS_ADDR_HI
);
440 writel(pp
->rx_fis_dma
& 0xffffffff, port_mmio
+ PORT_FIS_ADDR
);
441 readl(port_mmio
+ PORT_FIS_ADDR
); /* flush */
443 writel(PORT_CMD_ICC_ACTIVE
| PORT_CMD_FIS_RX
|
444 PORT_CMD_POWER_ON
| PORT_CMD_SPIN_UP
|
445 PORT_CMD_START
, port_mmio
+ PORT_CMD
);
446 readl(port_mmio
+ PORT_CMD
); /* flush */
452 static void ahci_port_stop(struct ata_port
*ap
)
454 struct device
*dev
= ap
->host_set
->dev
;
455 struct ahci_port_priv
*pp
= ap
->private_data
;
456 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
457 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
460 tmp
= readl(port_mmio
+ PORT_CMD
);
461 tmp
&= ~(PORT_CMD_START
| PORT_CMD_FIS_RX
);
462 writel(tmp
, port_mmio
+ PORT_CMD
);
463 readl(port_mmio
+ PORT_CMD
); /* flush */
465 /* spec says 500 msecs for each PORT_CMD_{START,FIS_RX} bit, so
466 * this is slightly incorrect.
470 ap
->private_data
= NULL
;
471 dma_free_coherent(dev
, AHCI_PORT_PRIV_DMA_SZ
,
472 pp
->cmd_slot
, pp
->cmd_slot_dma
);
473 ata_pad_free(ap
, dev
);
477 static u32
ahci_scr_read (struct ata_port
*ap
, unsigned int sc_reg_in
)
482 case SCR_STATUS
: sc_reg
= 0; break;
483 case SCR_CONTROL
: sc_reg
= 1; break;
484 case SCR_ERROR
: sc_reg
= 2; break;
485 case SCR_ACTIVE
: sc_reg
= 3; break;
490 return readl((void __iomem
*) ap
->ioaddr
.scr_addr
+ (sc_reg
* 4));
494 static void ahci_scr_write (struct ata_port
*ap
, unsigned int sc_reg_in
,
500 case SCR_STATUS
: sc_reg
= 0; break;
501 case SCR_CONTROL
: sc_reg
= 1; break;
502 case SCR_ERROR
: sc_reg
= 2; break;
503 case SCR_ACTIVE
: sc_reg
= 3; break;
508 writel(val
, (void __iomem
*) ap
->ioaddr
.scr_addr
+ (sc_reg
* 4));
511 static int ahci_stop_engine(struct ata_port
*ap
)
513 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
514 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
518 tmp
= readl(port_mmio
+ PORT_CMD
);
519 tmp
&= ~PORT_CMD_START
;
520 writel(tmp
, port_mmio
+ PORT_CMD
);
522 /* wait for engine to stop. TODO: this could be
523 * as long as 500 msec
527 tmp
= readl(port_mmio
+ PORT_CMD
);
528 if ((tmp
& PORT_CMD_LIST_ON
) == 0)
536 static void ahci_start_engine(struct ata_port
*ap
)
538 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
539 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
542 tmp
= readl(port_mmio
+ PORT_CMD
);
543 tmp
|= PORT_CMD_START
;
544 writel(tmp
, port_mmio
+ PORT_CMD
);
545 readl(port_mmio
+ PORT_CMD
); /* flush */
548 static unsigned int ahci_dev_classify(struct ata_port
*ap
)
550 void __iomem
*port_mmio
= (void __iomem
*) ap
->ioaddr
.cmd_addr
;
551 struct ata_taskfile tf
;
554 tmp
= readl(port_mmio
+ PORT_SIG
);
555 tf
.lbah
= (tmp
>> 24) & 0xff;
556 tf
.lbam
= (tmp
>> 16) & 0xff;
557 tf
.lbal
= (tmp
>> 8) & 0xff;
558 tf
.nsect
= (tmp
) & 0xff;
560 return ata_dev_classify(&tf
);
563 static void ahci_fill_cmd_slot(struct ahci_port_priv
*pp
, unsigned int tag
,
566 dma_addr_t cmd_tbl_dma
;
568 cmd_tbl_dma
= pp
->cmd_tbl_dma
+ tag
* AHCI_CMD_TBL_SZ
;
570 pp
->cmd_slot
[tag
].opts
= cpu_to_le32(opts
);
571 pp
->cmd_slot
[tag
].status
= 0;
572 pp
->cmd_slot
[tag
].tbl_addr
= cpu_to_le32(cmd_tbl_dma
& 0xffffffff);
573 pp
->cmd_slot
[tag
].tbl_addr_hi
= cpu_to_le32((cmd_tbl_dma
>> 16) >> 16);
576 static int ahci_clo(struct ata_port
*ap
)
578 void __iomem
*port_mmio
= (void __iomem
*) ap
->ioaddr
.cmd_addr
;
579 struct ahci_host_priv
*hpriv
= ap
->host_set
->private_data
;
582 if (!(hpriv
->cap
& HOST_CAP_CLO
))
585 tmp
= readl(port_mmio
+ PORT_CMD
);
587 writel(tmp
, port_mmio
+ PORT_CMD
);
589 tmp
= ata_wait_register(port_mmio
+ PORT_CMD
,
590 PORT_CMD_CLO
, PORT_CMD_CLO
, 1, 500);
591 if (tmp
& PORT_CMD_CLO
)
597 static int ahci_prereset(struct ata_port
*ap
)
599 if ((ap
->flags
& AHCI_FLAG_RESET_NEEDS_CLO
) &&
600 (ata_busy_wait(ap
, ATA_BUSY
, 1000) & ATA_BUSY
)) {
601 /* ATA_BUSY hasn't cleared, so send a CLO */
605 return ata_std_prereset(ap
);
608 static int ahci_softreset(struct ata_port
*ap
, unsigned int *class)
610 struct ahci_port_priv
*pp
= ap
->private_data
;
611 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
612 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
613 const u32 cmd_fis_len
= 5; /* five dwords */
614 const char *reason
= NULL
;
615 struct ata_taskfile tf
;
622 if (ata_port_offline(ap
)) {
623 DPRINTK("PHY reports no device\n");
624 *class = ATA_DEV_NONE
;
628 /* prepare for SRST (AHCI-1.1 10.4.1) */
629 rc
= ahci_stop_engine(ap
);
631 reason
= "failed to stop engine";
635 /* check BUSY/DRQ, perform Command List Override if necessary */
636 ahci_tf_read(ap
, &tf
);
637 if (tf
.command
& (ATA_BUSY
| ATA_DRQ
)) {
640 if (rc
== -EOPNOTSUPP
) {
641 reason
= "port busy but CLO unavailable";
644 reason
= "port busy but CLO failed";
650 ahci_start_engine(ap
);
652 ata_tf_init(ap
->device
, &tf
);
655 /* issue the first D2H Register FIS */
656 ahci_fill_cmd_slot(pp
, 0,
657 cmd_fis_len
| AHCI_CMD_RESET
| AHCI_CMD_CLR_BUSY
);
660 ata_tf_to_fis(&tf
, fis
, 0);
661 fis
[1] &= ~(1 << 7); /* turn off Command FIS bit */
663 writel(1, port_mmio
+ PORT_CMD_ISSUE
);
665 tmp
= ata_wait_register(port_mmio
+ PORT_CMD_ISSUE
, 0x1, 0x1, 1, 500);
668 reason
= "1st FIS failed";
672 /* spec says at least 5us, but be generous and sleep for 1ms */
675 /* issue the second D2H Register FIS */
676 ahci_fill_cmd_slot(pp
, 0, cmd_fis_len
);
679 ata_tf_to_fis(&tf
, fis
, 0);
680 fis
[1] &= ~(1 << 7); /* turn off Command FIS bit */
682 writel(1, port_mmio
+ PORT_CMD_ISSUE
);
683 readl(port_mmio
+ PORT_CMD_ISSUE
); /* flush */
685 /* spec mandates ">= 2ms" before checking status.
686 * We wait 150ms, because that was the magic delay used for
687 * ATAPI devices in Hale Landis's ATADRVR, for the period of time
688 * between when the ATA command register is written, and then
689 * status is checked. Because waiting for "a while" before
690 * checking status is fine, post SRST, we perform this magic
691 * delay here as well.
695 *class = ATA_DEV_NONE
;
696 if (ata_port_online(ap
)) {
697 if (ata_busy_sleep(ap
, ATA_TMOUT_BOOT_QUICK
, ATA_TMOUT_BOOT
)) {
699 reason
= "device not ready";
702 *class = ahci_dev_classify(ap
);
705 DPRINTK("EXIT, class=%u\n", *class);
709 ahci_start_engine(ap
);
711 ata_port_printk(ap
, KERN_ERR
, "softreset failed (%s)\n", reason
);
715 static int ahci_hardreset(struct ata_port
*ap
, unsigned int *class)
717 struct ahci_port_priv
*pp
= ap
->private_data
;
718 u8
*d2h_fis
= pp
->rx_fis
+ RX_FIS_D2H_REG
;
719 struct ata_taskfile tf
;
724 ahci_stop_engine(ap
);
726 /* clear D2H reception area to properly wait for D2H FIS */
727 ata_tf_init(ap
->device
, &tf
);
729 ata_tf_to_fis(&tf
, d2h_fis
, 0);
731 rc
= sata_std_hardreset(ap
, class);
733 ahci_start_engine(ap
);
735 if (rc
== 0 && ata_port_online(ap
))
736 *class = ahci_dev_classify(ap
);
737 if (*class == ATA_DEV_UNKNOWN
)
738 *class = ATA_DEV_NONE
;
740 DPRINTK("EXIT, rc=%d, class=%u\n", rc
, *class);
744 static void ahci_postreset(struct ata_port
*ap
, unsigned int *class)
746 void __iomem
*port_mmio
= (void __iomem
*) ap
->ioaddr
.cmd_addr
;
749 ata_std_postreset(ap
, class);
751 /* Make sure port's ATAPI bit is set appropriately */
752 new_tmp
= tmp
= readl(port_mmio
+ PORT_CMD
);
753 if (*class == ATA_DEV_ATAPI
)
754 new_tmp
|= PORT_CMD_ATAPI
;
756 new_tmp
&= ~PORT_CMD_ATAPI
;
757 if (new_tmp
!= tmp
) {
758 writel(new_tmp
, port_mmio
+ PORT_CMD
);
759 readl(port_mmio
+ PORT_CMD
); /* flush */
763 static u8
ahci_check_status(struct ata_port
*ap
)
765 void __iomem
*mmio
= (void __iomem
*) ap
->ioaddr
.cmd_addr
;
767 return readl(mmio
+ PORT_TFDATA
) & 0xFF;
770 static void ahci_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
)
772 struct ahci_port_priv
*pp
= ap
->private_data
;
773 u8
*d2h_fis
= pp
->rx_fis
+ RX_FIS_D2H_REG
;
775 ata_tf_from_fis(d2h_fis
, tf
);
778 static unsigned int ahci_fill_sg(struct ata_queued_cmd
*qc
, void *cmd_tbl
)
780 struct scatterlist
*sg
;
781 struct ahci_sg
*ahci_sg
;
782 unsigned int n_sg
= 0;
787 * Next, the S/G list.
789 ahci_sg
= cmd_tbl
+ AHCI_CMD_TBL_HDR_SZ
;
790 ata_for_each_sg(sg
, qc
) {
791 dma_addr_t addr
= sg_dma_address(sg
);
792 u32 sg_len
= sg_dma_len(sg
);
794 ahci_sg
->addr
= cpu_to_le32(addr
& 0xffffffff);
795 ahci_sg
->addr_hi
= cpu_to_le32((addr
>> 16) >> 16);
796 ahci_sg
->flags_size
= cpu_to_le32(sg_len
- 1);
805 static void ahci_qc_prep(struct ata_queued_cmd
*qc
)
807 struct ata_port
*ap
= qc
->ap
;
808 struct ahci_port_priv
*pp
= ap
->private_data
;
809 int is_atapi
= is_atapi_taskfile(&qc
->tf
);
812 const u32 cmd_fis_len
= 5; /* five dwords */
816 * Fill in command table information. First, the header,
817 * a SATA Register - Host to Device command FIS.
819 cmd_tbl
= pp
->cmd_tbl
+ qc
->tag
* AHCI_CMD_TBL_SZ
;
821 ata_tf_to_fis(&qc
->tf
, cmd_tbl
, 0);
823 memset(cmd_tbl
+ AHCI_CMD_TBL_CDB
, 0, 32);
824 memcpy(cmd_tbl
+ AHCI_CMD_TBL_CDB
, qc
->cdb
, qc
->dev
->cdb_len
);
828 if (qc
->flags
& ATA_QCFLAG_DMAMAP
)
829 n_elem
= ahci_fill_sg(qc
, cmd_tbl
);
832 * Fill in command slot information.
834 opts
= cmd_fis_len
| n_elem
<< 16;
835 if (qc
->tf
.flags
& ATA_TFLAG_WRITE
)
836 opts
|= AHCI_CMD_WRITE
;
838 opts
|= AHCI_CMD_ATAPI
| AHCI_CMD_PREFETCH
;
840 ahci_fill_cmd_slot(pp
, qc
->tag
, opts
);
843 static void ahci_error_intr(struct ata_port
*ap
, u32 irq_stat
)
845 struct ahci_port_priv
*pp
= ap
->private_data
;
846 struct ata_eh_info
*ehi
= &ap
->eh_info
;
847 unsigned int err_mask
= 0, action
= 0;
848 struct ata_queued_cmd
*qc
;
851 ata_ehi_clear_desc(ehi
);
853 /* AHCI needs SError cleared; otherwise, it might lock up */
854 serror
= ahci_scr_read(ap
, SCR_ERROR
);
855 ahci_scr_write(ap
, SCR_ERROR
, serror
);
857 /* analyze @irq_stat */
858 ata_ehi_push_desc(ehi
, "irq_stat 0x%08x", irq_stat
);
860 if (irq_stat
& PORT_IRQ_TF_ERR
)
861 err_mask
|= AC_ERR_DEV
;
863 if (irq_stat
& (PORT_IRQ_HBUS_ERR
| PORT_IRQ_HBUS_DATA_ERR
)) {
864 err_mask
|= AC_ERR_HOST_BUS
;
865 action
|= ATA_EH_SOFTRESET
;
868 if (irq_stat
& PORT_IRQ_IF_ERR
) {
869 err_mask
|= AC_ERR_ATA_BUS
;
870 action
|= ATA_EH_SOFTRESET
;
871 ata_ehi_push_desc(ehi
, ", interface fatal error");
874 if (irq_stat
& (PORT_IRQ_CONNECT
| PORT_IRQ_PHYRDY
)) {
875 ata_ehi_hotplugged(ehi
);
876 ata_ehi_push_desc(ehi
, ", %s", irq_stat
& PORT_IRQ_CONNECT
?
877 "connection status changed" : "PHY RDY changed");
880 if (irq_stat
& PORT_IRQ_UNK_FIS
) {
881 u32
*unk
= (u32
*)(pp
->rx_fis
+ RX_FIS_UNK
);
883 err_mask
|= AC_ERR_HSM
;
884 action
|= ATA_EH_SOFTRESET
;
885 ata_ehi_push_desc(ehi
, ", unknown FIS %08x %08x %08x %08x",
886 unk
[0], unk
[1], unk
[2], unk
[3]);
889 /* okay, let's hand over to EH */
890 ehi
->serror
|= serror
;
891 ehi
->action
|= action
;
893 qc
= ata_qc_from_tag(ap
, ap
->active_tag
);
895 qc
->err_mask
|= err_mask
;
897 ehi
->err_mask
|= err_mask
;
899 if (irq_stat
& PORT_IRQ_FREEZE
)
905 static void ahci_host_intr(struct ata_port
*ap
)
907 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
908 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
909 struct ata_eh_info
*ehi
= &ap
->eh_info
;
910 u32 status
, qc_active
;
913 status
= readl(port_mmio
+ PORT_IRQ_STAT
);
914 writel(status
, port_mmio
+ PORT_IRQ_STAT
);
916 if (unlikely(status
& PORT_IRQ_ERROR
)) {
917 ahci_error_intr(ap
, status
);
922 qc_active
= readl(port_mmio
+ PORT_SCR_ACT
);
924 qc_active
= readl(port_mmio
+ PORT_CMD_ISSUE
);
926 rc
= ata_qc_complete_multiple(ap
, qc_active
, NULL
);
930 ehi
->err_mask
|= AC_ERR_HSM
;
931 ehi
->action
|= ATA_EH_SOFTRESET
;
936 /* hmmm... a spurious interupt */
938 /* some devices send D2H reg with I bit set during NCQ command phase */
939 if (ap
->sactive
&& status
& PORT_IRQ_D2H_REG_FIS
)
942 /* ignore interim PIO setup fis interrupts */
943 if (ata_tag_valid(ap
->active_tag
)) {
944 struct ata_queued_cmd
*qc
=
945 ata_qc_from_tag(ap
, ap
->active_tag
);
947 if (qc
&& qc
->tf
.protocol
== ATA_PROT_PIO
&&
948 (status
& PORT_IRQ_PIOS_FIS
))
953 ata_port_printk(ap
, KERN_INFO
, "spurious interrupt "
954 "(irq_stat 0x%x active_tag %d sactive 0x%x)\n",
955 status
, ap
->active_tag
, ap
->sactive
);
958 static void ahci_irq_clear(struct ata_port
*ap
)
963 static irqreturn_t
ahci_interrupt(int irq
, void *dev_instance
, struct pt_regs
*regs
)
965 struct ata_host_set
*host_set
= dev_instance
;
966 struct ahci_host_priv
*hpriv
;
967 unsigned int i
, handled
= 0;
969 u32 irq_stat
, irq_ack
= 0;
973 hpriv
= host_set
->private_data
;
974 mmio
= host_set
->mmio_base
;
976 /* sigh. 0xffffffff is a valid return from h/w */
977 irq_stat
= readl(mmio
+ HOST_IRQ_STAT
);
978 irq_stat
&= hpriv
->port_map
;
982 spin_lock(&host_set
->lock
);
984 for (i
= 0; i
< host_set
->n_ports
; i
++) {
987 if (!(irq_stat
& (1 << i
)))
990 ap
= host_set
->ports
[i
];
993 VPRINTK("port %u\n", i
);
995 VPRINTK("port %u (no irq)\n", i
);
997 dev_printk(KERN_WARNING
, host_set
->dev
,
998 "interrupt on disabled port %u\n", i
);
1001 irq_ack
|= (1 << i
);
1005 writel(irq_ack
, mmio
+ HOST_IRQ_STAT
);
1009 spin_unlock(&host_set
->lock
);
1013 return IRQ_RETVAL(handled
);
1016 static unsigned int ahci_qc_issue(struct ata_queued_cmd
*qc
)
1018 struct ata_port
*ap
= qc
->ap
;
1019 void __iomem
*port_mmio
= (void __iomem
*) ap
->ioaddr
.cmd_addr
;
1021 if (qc
->tf
.protocol
== ATA_PROT_NCQ
)
1022 writel(1 << qc
->tag
, port_mmio
+ PORT_SCR_ACT
);
1023 writel(1 << qc
->tag
, port_mmio
+ PORT_CMD_ISSUE
);
1024 readl(port_mmio
+ PORT_CMD_ISSUE
); /* flush */
1029 static void ahci_freeze(struct ata_port
*ap
)
1031 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
1032 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
1035 writel(0, port_mmio
+ PORT_IRQ_MASK
);
1038 static void ahci_thaw(struct ata_port
*ap
)
1040 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
1041 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
1045 tmp
= readl(port_mmio
+ PORT_IRQ_STAT
);
1046 writel(tmp
, port_mmio
+ PORT_IRQ_STAT
);
1047 writel(1 << ap
->id
, mmio
+ HOST_IRQ_STAT
);
1049 /* turn IRQ back on */
1050 writel(DEF_PORT_IRQ
, port_mmio
+ PORT_IRQ_MASK
);
1053 static void ahci_error_handler(struct ata_port
*ap
)
1055 if (!(ap
->flags
& ATA_FLAG_FROZEN
)) {
1056 /* restart engine */
1057 ahci_stop_engine(ap
);
1058 ahci_start_engine(ap
);
1061 /* perform recovery */
1062 ata_do_eh(ap
, ahci_prereset
, ahci_softreset
, ahci_hardreset
,
1066 static void ahci_post_internal_cmd(struct ata_queued_cmd
*qc
)
1068 struct ata_port
*ap
= qc
->ap
;
1070 if (qc
->flags
& ATA_QCFLAG_FAILED
)
1071 qc
->err_mask
|= AC_ERR_OTHER
;
1074 /* make DMA engine forget about the failed command */
1075 ahci_stop_engine(ap
);
1076 ahci_start_engine(ap
);
1080 static void ahci_setup_port(struct ata_ioports
*port
, unsigned long base
,
1081 unsigned int port_idx
)
1083 VPRINTK("ENTER, base==0x%lx, port_idx %u\n", base
, port_idx
);
1084 base
= ahci_port_base_ul(base
, port_idx
);
1085 VPRINTK("base now==0x%lx\n", base
);
1087 port
->cmd_addr
= base
;
1088 port
->scr_addr
= base
+ PORT_SCR
;
1093 static int ahci_host_init(struct ata_probe_ent
*probe_ent
)
1095 struct ahci_host_priv
*hpriv
= probe_ent
->private_data
;
1096 struct pci_dev
*pdev
= to_pci_dev(probe_ent
->dev
);
1097 void __iomem
*mmio
= probe_ent
->mmio_base
;
1099 unsigned int i
, j
, using_dac
;
1101 void __iomem
*port_mmio
;
1103 cap_save
= readl(mmio
+ HOST_CAP
);
1104 cap_save
&= ( (1<<28) | (1<<17) );
1105 cap_save
|= (1 << 27);
1107 /* global controller reset */
1108 tmp
= readl(mmio
+ HOST_CTL
);
1109 if ((tmp
& HOST_RESET
) == 0) {
1110 writel(tmp
| HOST_RESET
, mmio
+ HOST_CTL
);
1111 readl(mmio
+ HOST_CTL
); /* flush */
1114 /* reset must complete within 1 second, or
1115 * the hardware should be considered fried.
1119 tmp
= readl(mmio
+ HOST_CTL
);
1120 if (tmp
& HOST_RESET
) {
1121 dev_printk(KERN_ERR
, &pdev
->dev
,
1122 "controller reset failed (0x%x)\n", tmp
);
1126 writel(HOST_AHCI_EN
, mmio
+ HOST_CTL
);
1127 (void) readl(mmio
+ HOST_CTL
); /* flush */
1128 writel(cap_save
, mmio
+ HOST_CAP
);
1129 writel(0xf, mmio
+ HOST_PORTS_IMPL
);
1130 (void) readl(mmio
+ HOST_PORTS_IMPL
); /* flush */
1132 if (pdev
->vendor
== PCI_VENDOR_ID_INTEL
) {
1135 pci_read_config_word(pdev
, 0x92, &tmp16
);
1137 pci_write_config_word(pdev
, 0x92, tmp16
);
1140 hpriv
->cap
= readl(mmio
+ HOST_CAP
);
1141 hpriv
->port_map
= readl(mmio
+ HOST_PORTS_IMPL
);
1142 probe_ent
->n_ports
= (hpriv
->cap
& 0x1f) + 1;
1144 VPRINTK("cap 0x%x port_map 0x%x n_ports %d\n",
1145 hpriv
->cap
, hpriv
->port_map
, probe_ent
->n_ports
);
1147 using_dac
= hpriv
->cap
& HOST_CAP_64
;
1149 !pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) {
1150 rc
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
1152 rc
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
1154 dev_printk(KERN_ERR
, &pdev
->dev
,
1155 "64-bit DMA enable failed\n");
1160 rc
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
1162 dev_printk(KERN_ERR
, &pdev
->dev
,
1163 "32-bit DMA enable failed\n");
1166 rc
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
1168 dev_printk(KERN_ERR
, &pdev
->dev
,
1169 "32-bit consistent DMA enable failed\n");
1174 for (i
= 0; i
< probe_ent
->n_ports
; i
++) {
1175 #if 0 /* BIOSen initialize this incorrectly */
1176 if (!(hpriv
->port_map
& (1 << i
)))
1180 port_mmio
= ahci_port_base(mmio
, i
);
1181 VPRINTK("mmio %p port_mmio %p\n", mmio
, port_mmio
);
1183 ahci_setup_port(&probe_ent
->port
[i
],
1184 (unsigned long) mmio
, i
);
1186 /* make sure port is not active */
1187 tmp
= readl(port_mmio
+ PORT_CMD
);
1188 VPRINTK("PORT_CMD 0x%x\n", tmp
);
1189 if (tmp
& (PORT_CMD_LIST_ON
| PORT_CMD_FIS_ON
|
1190 PORT_CMD_FIS_RX
| PORT_CMD_START
)) {
1191 tmp
&= ~(PORT_CMD_LIST_ON
| PORT_CMD_FIS_ON
|
1192 PORT_CMD_FIS_RX
| PORT_CMD_START
);
1193 writel(tmp
, port_mmio
+ PORT_CMD
);
1194 readl(port_mmio
+ PORT_CMD
); /* flush */
1196 /* spec says 500 msecs for each bit, so
1197 * this is slightly incorrect.
1202 writel(PORT_CMD_SPIN_UP
, port_mmio
+ PORT_CMD
);
1207 tmp
= readl(port_mmio
+ PORT_SCR_STAT
);
1208 if ((tmp
& 0xf) == 0x3)
1213 tmp
= readl(port_mmio
+ PORT_SCR_ERR
);
1214 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp
);
1215 writel(tmp
, port_mmio
+ PORT_SCR_ERR
);
1217 /* ack any pending irq events for this port */
1218 tmp
= readl(port_mmio
+ PORT_IRQ_STAT
);
1219 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp
);
1221 writel(tmp
, port_mmio
+ PORT_IRQ_STAT
);
1223 writel(1 << i
, mmio
+ HOST_IRQ_STAT
);
1226 tmp
= readl(mmio
+ HOST_CTL
);
1227 VPRINTK("HOST_CTL 0x%x\n", tmp
);
1228 writel(tmp
| HOST_IRQ_EN
, mmio
+ HOST_CTL
);
1229 tmp
= readl(mmio
+ HOST_CTL
);
1230 VPRINTK("HOST_CTL 0x%x\n", tmp
);
1232 pci_set_master(pdev
);
1237 static void ahci_print_info(struct ata_probe_ent
*probe_ent
)
1239 struct ahci_host_priv
*hpriv
= probe_ent
->private_data
;
1240 struct pci_dev
*pdev
= to_pci_dev(probe_ent
->dev
);
1241 void __iomem
*mmio
= probe_ent
->mmio_base
;
1242 u32 vers
, cap
, impl
, speed
;
1243 const char *speed_s
;
1247 vers
= readl(mmio
+ HOST_VERSION
);
1249 impl
= hpriv
->port_map
;
1251 speed
= (cap
>> 20) & 0xf;
1254 else if (speed
== 2)
1259 pci_read_config_word(pdev
, 0x0a, &cc
);
1262 else if (cc
== 0x0106)
1264 else if (cc
== 0x0104)
1269 dev_printk(KERN_INFO
, &pdev
->dev
,
1270 "AHCI %02x%02x.%02x%02x "
1271 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
1274 (vers
>> 24) & 0xff,
1275 (vers
>> 16) & 0xff,
1279 ((cap
>> 8) & 0x1f) + 1,
1285 dev_printk(KERN_INFO
, &pdev
->dev
,
1291 cap
& (1 << 31) ? "64bit " : "",
1292 cap
& (1 << 30) ? "ncq " : "",
1293 cap
& (1 << 28) ? "ilck " : "",
1294 cap
& (1 << 27) ? "stag " : "",
1295 cap
& (1 << 26) ? "pm " : "",
1296 cap
& (1 << 25) ? "led " : "",
1298 cap
& (1 << 24) ? "clo " : "",
1299 cap
& (1 << 19) ? "nz " : "",
1300 cap
& (1 << 18) ? "only " : "",
1301 cap
& (1 << 17) ? "pmp " : "",
1302 cap
& (1 << 15) ? "pio " : "",
1303 cap
& (1 << 14) ? "slum " : "",
1304 cap
& (1 << 13) ? "part " : ""
1308 static int ahci_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
1310 static int printed_version
;
1311 struct ata_probe_ent
*probe_ent
= NULL
;
1312 struct ahci_host_priv
*hpriv
;
1314 void __iomem
*mmio_base
;
1315 unsigned int board_idx
= (unsigned int) ent
->driver_data
;
1316 int have_msi
, pci_dev_busy
= 0;
1321 WARN_ON(ATA_MAX_QUEUE
> AHCI_MAX_CMDS
);
1323 if (!printed_version
++)
1324 dev_printk(KERN_DEBUG
, &pdev
->dev
, "version " DRV_VERSION
"\n");
1326 rc
= pci_enable_device(pdev
);
1330 rc
= pci_request_regions(pdev
, DRV_NAME
);
1336 if (pci_enable_msi(pdev
) == 0)
1343 probe_ent
= kmalloc(sizeof(*probe_ent
), GFP_KERNEL
);
1344 if (probe_ent
== NULL
) {
1349 memset(probe_ent
, 0, sizeof(*probe_ent
));
1350 probe_ent
->dev
= pci_dev_to_dev(pdev
);
1351 INIT_LIST_HEAD(&probe_ent
->node
);
1353 mmio_base
= pci_iomap(pdev
, AHCI_PCI_BAR
, 0);
1354 if (mmio_base
== NULL
) {
1356 goto err_out_free_ent
;
1358 base
= (unsigned long) mmio_base
;
1360 hpriv
= kmalloc(sizeof(*hpriv
), GFP_KERNEL
);
1363 goto err_out_iounmap
;
1365 memset(hpriv
, 0, sizeof(*hpriv
));
1367 probe_ent
->sht
= ahci_port_info
[board_idx
].sht
;
1368 probe_ent
->host_flags
= ahci_port_info
[board_idx
].host_flags
;
1369 probe_ent
->pio_mask
= ahci_port_info
[board_idx
].pio_mask
;
1370 probe_ent
->udma_mask
= ahci_port_info
[board_idx
].udma_mask
;
1371 probe_ent
->port_ops
= ahci_port_info
[board_idx
].port_ops
;
1373 probe_ent
->irq
= pdev
->irq
;
1374 probe_ent
->irq_flags
= SA_SHIRQ
;
1375 probe_ent
->mmio_base
= mmio_base
;
1376 probe_ent
->private_data
= hpriv
;
1379 hpriv
->flags
|= AHCI_FLAG_MSI
;
1381 /* JMicron-specific fixup: make sure we're in AHCI mode */
1382 if (pdev
->vendor
== 0x197b)
1383 pci_write_config_byte(pdev
, 0x41, 0xa1);
1385 /* initialize adapter */
1386 rc
= ahci_host_init(probe_ent
);
1390 if (!(probe_ent
->host_flags
& AHCI_FLAG_NO_NCQ
) &&
1391 (hpriv
->cap
& HOST_CAP_NCQ
))
1392 probe_ent
->host_flags
|= ATA_FLAG_NCQ
;
1394 ahci_print_info(probe_ent
);
1396 /* FIXME: check ata_device_add return value */
1397 ata_device_add(probe_ent
);
1405 pci_iounmap(pdev
, mmio_base
);
1410 pci_disable_msi(pdev
);
1413 pci_release_regions(pdev
);
1416 pci_disable_device(pdev
);
1420 static void ahci_remove_one (struct pci_dev
*pdev
)
1422 struct device
*dev
= pci_dev_to_dev(pdev
);
1423 struct ata_host_set
*host_set
= dev_get_drvdata(dev
);
1424 struct ahci_host_priv
*hpriv
= host_set
->private_data
;
1428 for (i
= 0; i
< host_set
->n_ports
; i
++)
1429 ata_port_detach(host_set
->ports
[i
]);
1431 have_msi
= hpriv
->flags
& AHCI_FLAG_MSI
;
1432 free_irq(host_set
->irq
, host_set
);
1434 for (i
= 0; i
< host_set
->n_ports
; i
++) {
1435 struct ata_port
*ap
= host_set
->ports
[i
];
1437 ata_scsi_release(ap
->host
);
1438 scsi_host_put(ap
->host
);
1442 pci_iounmap(pdev
, host_set
->mmio_base
);
1446 pci_disable_msi(pdev
);
1449 pci_release_regions(pdev
);
1450 pci_disable_device(pdev
);
1451 dev_set_drvdata(dev
, NULL
);
1454 static int __init
ahci_init(void)
1456 return pci_module_init(&ahci_pci_driver
);
1459 static void __exit
ahci_exit(void)
1461 pci_unregister_driver(&ahci_pci_driver
);
1465 MODULE_AUTHOR("Jeff Garzik");
1466 MODULE_DESCRIPTION("AHCI SATA low-level driver");
1467 MODULE_LICENSE("GPL");
1468 MODULE_DEVICE_TABLE(pci
, ahci_pci_tbl
);
1469 MODULE_VERSION(DRV_VERSION
);
1471 module_init(ahci_init
);
1472 module_exit(ahci_exit
);