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 "1.3"
56 AHCI_MAX_SG
= 168, /* hardware max is 64K */
57 AHCI_DMA_BOUNDARY
= 0xffffffff,
58 AHCI_USE_CLUSTERING
= 0,
59 AHCI_CMD_SLOT_SZ
= 32 * 32,
61 AHCI_CMD_TBL_HDR
= 0x80,
62 AHCI_CMD_TBL_CDB
= 0x40,
63 AHCI_CMD_TBL_SZ
= AHCI_CMD_TBL_HDR
+ (AHCI_MAX_SG
* 16),
64 AHCI_PORT_PRIV_DMA_SZ
= AHCI_CMD_SLOT_SZ
+ AHCI_CMD_TBL_SZ
+
66 AHCI_IRQ_ON_SG
= (1 << 31),
67 AHCI_CMD_ATAPI
= (1 << 5),
68 AHCI_CMD_WRITE
= (1 << 6),
69 AHCI_CMD_PREFETCH
= (1 << 7),
70 AHCI_CMD_RESET
= (1 << 8),
71 AHCI_CMD_CLR_BUSY
= (1 << 10),
73 RX_FIS_D2H_REG
= 0x40, /* offset of D2H Register FIS data */
74 RX_FIS_UNK
= 0x60, /* offset of Unknown FIS data */
77 board_ahci_vt8251
= 1,
79 /* global controller registers */
80 HOST_CAP
= 0x00, /* host capabilities */
81 HOST_CTL
= 0x04, /* global host control */
82 HOST_IRQ_STAT
= 0x08, /* interrupt status */
83 HOST_PORTS_IMPL
= 0x0c, /* bitmap of implemented ports */
84 HOST_VERSION
= 0x10, /* AHCI spec. version compliancy */
87 HOST_RESET
= (1 << 0), /* reset controller; self-clear */
88 HOST_IRQ_EN
= (1 << 1), /* global IRQ enable */
89 HOST_AHCI_EN
= (1 << 31), /* AHCI enabled */
92 HOST_CAP_64
= (1 << 31), /* PCI DAC (64-bit DMA) support */
93 HOST_CAP_CLO
= (1 << 24), /* Command List Override support */
95 /* registers for each SATA port */
96 PORT_LST_ADDR
= 0x00, /* command list DMA addr */
97 PORT_LST_ADDR_HI
= 0x04, /* command list DMA addr hi */
98 PORT_FIS_ADDR
= 0x08, /* FIS rx buf addr */
99 PORT_FIS_ADDR_HI
= 0x0c, /* FIS rx buf addr hi */
100 PORT_IRQ_STAT
= 0x10, /* interrupt status */
101 PORT_IRQ_MASK
= 0x14, /* interrupt enable/disable mask */
102 PORT_CMD
= 0x18, /* port command */
103 PORT_TFDATA
= 0x20, /* taskfile data */
104 PORT_SIG
= 0x24, /* device TF signature */
105 PORT_CMD_ISSUE
= 0x38, /* command issue */
106 PORT_SCR
= 0x28, /* SATA phy register block */
107 PORT_SCR_STAT
= 0x28, /* SATA phy register: SStatus */
108 PORT_SCR_CTL
= 0x2c, /* SATA phy register: SControl */
109 PORT_SCR_ERR
= 0x30, /* SATA phy register: SError */
110 PORT_SCR_ACT
= 0x34, /* SATA phy register: SActive */
112 /* PORT_IRQ_{STAT,MASK} bits */
113 PORT_IRQ_COLD_PRES
= (1 << 31), /* cold presence detect */
114 PORT_IRQ_TF_ERR
= (1 << 30), /* task file error */
115 PORT_IRQ_HBUS_ERR
= (1 << 29), /* host bus fatal error */
116 PORT_IRQ_HBUS_DATA_ERR
= (1 << 28), /* host bus data error */
117 PORT_IRQ_IF_ERR
= (1 << 27), /* interface fatal error */
118 PORT_IRQ_IF_NONFATAL
= (1 << 26), /* interface non-fatal error */
119 PORT_IRQ_OVERFLOW
= (1 << 24), /* xfer exhausted available S/G */
120 PORT_IRQ_BAD_PMP
= (1 << 23), /* incorrect port multiplier */
122 PORT_IRQ_PHYRDY
= (1 << 22), /* PhyRdy changed */
123 PORT_IRQ_DEV_ILCK
= (1 << 7), /* device interlock */
124 PORT_IRQ_CONNECT
= (1 << 6), /* port connect change status */
125 PORT_IRQ_SG_DONE
= (1 << 5), /* descriptor processed */
126 PORT_IRQ_UNK_FIS
= (1 << 4), /* unknown FIS rx'd */
127 PORT_IRQ_SDB_FIS
= (1 << 3), /* Set Device Bits FIS rx'd */
128 PORT_IRQ_DMAS_FIS
= (1 << 2), /* DMA Setup FIS rx'd */
129 PORT_IRQ_PIOS_FIS
= (1 << 1), /* PIO Setup FIS rx'd */
130 PORT_IRQ_D2H_REG_FIS
= (1 << 0), /* D2H Register FIS rx'd */
132 PORT_IRQ_FREEZE
= PORT_IRQ_HBUS_ERR
|
136 PORT_IRQ_ERROR
= PORT_IRQ_FREEZE
|
138 PORT_IRQ_HBUS_DATA_ERR
,
139 DEF_PORT_IRQ
= PORT_IRQ_ERROR
| PORT_IRQ_SG_DONE
|
140 PORT_IRQ_SDB_FIS
| PORT_IRQ_DMAS_FIS
|
141 PORT_IRQ_PIOS_FIS
| PORT_IRQ_D2H_REG_FIS
,
144 PORT_CMD_ATAPI
= (1 << 24), /* Device is ATAPI */
145 PORT_CMD_LIST_ON
= (1 << 15), /* cmd list DMA engine running */
146 PORT_CMD_FIS_ON
= (1 << 14), /* FIS DMA engine running */
147 PORT_CMD_FIS_RX
= (1 << 4), /* Enable FIS receive DMA engine */
148 PORT_CMD_CLO
= (1 << 3), /* Command list override */
149 PORT_CMD_POWER_ON
= (1 << 2), /* Power up device */
150 PORT_CMD_SPIN_UP
= (1 << 1), /* Spin up device */
151 PORT_CMD_START
= (1 << 0), /* Enable port DMA engine */
153 PORT_CMD_ICC_ACTIVE
= (0x1 << 28), /* Put i/f in active state */
154 PORT_CMD_ICC_PARTIAL
= (0x2 << 28), /* Put i/f in partial state */
155 PORT_CMD_ICC_SLUMBER
= (0x6 << 28), /* Put i/f in slumber state */
157 /* hpriv->flags bits */
158 AHCI_FLAG_MSI
= (1 << 0),
161 AHCI_FLAG_RESET_NEEDS_CLO
= (1 << 24),
164 struct ahci_cmd_hdr
{
179 struct ahci_host_priv
{
181 u32 cap
; /* cache of HOST_CAP register */
182 u32 port_map
; /* cache of HOST_PORTS_IMPL reg */
185 struct ahci_port_priv
{
186 struct ahci_cmd_hdr
*cmd_slot
;
187 dma_addr_t cmd_slot_dma
;
189 dma_addr_t cmd_tbl_dma
;
190 struct ahci_sg
*cmd_tbl_sg
;
192 dma_addr_t rx_fis_dma
;
195 static u32
ahci_scr_read (struct ata_port
*ap
, unsigned int sc_reg
);
196 static void ahci_scr_write (struct ata_port
*ap
, unsigned int sc_reg
, u32 val
);
197 static int ahci_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
198 static unsigned int ahci_qc_issue(struct ata_queued_cmd
*qc
);
199 static irqreturn_t
ahci_interrupt (int irq
, void *dev_instance
, struct pt_regs
*regs
);
200 static int ahci_probe_reset(struct ata_port
*ap
, unsigned int *classes
);
201 static void ahci_irq_clear(struct ata_port
*ap
);
202 static int ahci_port_start(struct ata_port
*ap
);
203 static void ahci_port_stop(struct ata_port
*ap
);
204 static void ahci_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
);
205 static void ahci_qc_prep(struct ata_queued_cmd
*qc
);
206 static u8
ahci_check_status(struct ata_port
*ap
);
207 static void ahci_freeze(struct ata_port
*ap
);
208 static void ahci_thaw(struct ata_port
*ap
);
209 static void ahci_error_handler(struct ata_port
*ap
);
210 static void ahci_post_internal_cmd(struct ata_queued_cmd
*qc
);
211 static void ahci_remove_one (struct pci_dev
*pdev
);
213 static struct scsi_host_template ahci_sht
= {
214 .module
= THIS_MODULE
,
216 .ioctl
= ata_scsi_ioctl
,
217 .queuecommand
= ata_scsi_queuecmd
,
218 .can_queue
= ATA_DEF_QUEUE
,
219 .this_id
= ATA_SHT_THIS_ID
,
220 .sg_tablesize
= AHCI_MAX_SG
,
221 .cmd_per_lun
= ATA_SHT_CMD_PER_LUN
,
222 .emulated
= ATA_SHT_EMULATED
,
223 .use_clustering
= AHCI_USE_CLUSTERING
,
224 .proc_name
= DRV_NAME
,
225 .dma_boundary
= AHCI_DMA_BOUNDARY
,
226 .slave_configure
= ata_scsi_slave_config
,
227 .bios_param
= ata_std_bios_param
,
230 static const struct ata_port_operations ahci_ops
= {
231 .port_disable
= ata_port_disable
,
233 .check_status
= ahci_check_status
,
234 .check_altstatus
= ahci_check_status
,
235 .dev_select
= ata_noop_dev_select
,
237 .tf_read
= ahci_tf_read
,
239 .probe_reset
= ahci_probe_reset
,
241 .qc_prep
= ahci_qc_prep
,
242 .qc_issue
= ahci_qc_issue
,
244 .irq_handler
= ahci_interrupt
,
245 .irq_clear
= ahci_irq_clear
,
247 .scr_read
= ahci_scr_read
,
248 .scr_write
= ahci_scr_write
,
250 .freeze
= ahci_freeze
,
253 .error_handler
= ahci_error_handler
,
254 .post_internal_cmd
= ahci_post_internal_cmd
,
256 .port_start
= ahci_port_start
,
257 .port_stop
= ahci_port_stop
,
260 static const struct ata_port_info ahci_port_info
[] = {
264 .host_flags
= ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
|
265 ATA_FLAG_MMIO
| ATA_FLAG_PIO_DMA
,
266 .pio_mask
= 0x1f, /* pio0-4 */
267 .udma_mask
= 0x7f, /* udma0-6 ; FIXME */
268 .port_ops
= &ahci_ops
,
270 /* board_ahci_vt8251 */
273 .host_flags
= ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
|
274 ATA_FLAG_MMIO
| ATA_FLAG_PIO_DMA
|
275 AHCI_FLAG_RESET_NEEDS_CLO
,
276 .pio_mask
= 0x1f, /* pio0-4 */
277 .udma_mask
= 0x7f, /* udma0-6 ; FIXME */
278 .port_ops
= &ahci_ops
,
282 static const struct pci_device_id ahci_pci_tbl
[] = {
283 { PCI_VENDOR_ID_INTEL
, 0x2652, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
284 board_ahci
}, /* ICH6 */
285 { PCI_VENDOR_ID_INTEL
, 0x2653, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
286 board_ahci
}, /* ICH6M */
287 { PCI_VENDOR_ID_INTEL
, 0x27c1, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
288 board_ahci
}, /* ICH7 */
289 { PCI_VENDOR_ID_INTEL
, 0x27c5, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
290 board_ahci
}, /* ICH7M */
291 { PCI_VENDOR_ID_INTEL
, 0x27c3, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
292 board_ahci
}, /* ICH7R */
293 { PCI_VENDOR_ID_AL
, 0x5288, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
294 board_ahci
}, /* ULi M5288 */
295 { PCI_VENDOR_ID_INTEL
, 0x2681, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
296 board_ahci
}, /* ESB2 */
297 { PCI_VENDOR_ID_INTEL
, 0x2682, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
298 board_ahci
}, /* ESB2 */
299 { PCI_VENDOR_ID_INTEL
, 0x2683, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
300 board_ahci
}, /* ESB2 */
301 { PCI_VENDOR_ID_INTEL
, 0x27c6, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
302 board_ahci
}, /* ICH7-M DH */
303 { PCI_VENDOR_ID_INTEL
, 0x2821, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
304 board_ahci
}, /* ICH8 */
305 { PCI_VENDOR_ID_INTEL
, 0x2822, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
306 board_ahci
}, /* ICH8 */
307 { PCI_VENDOR_ID_INTEL
, 0x2824, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
308 board_ahci
}, /* ICH8 */
309 { PCI_VENDOR_ID_INTEL
, 0x2829, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
310 board_ahci
}, /* ICH8M */
311 { PCI_VENDOR_ID_INTEL
, 0x282a, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
312 board_ahci
}, /* ICH8M */
313 { 0x197b, 0x2360, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
314 board_ahci
}, /* JMicron JMB360 */
315 { 0x197b, 0x2363, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
316 board_ahci
}, /* JMicron JMB363 */
317 { PCI_VENDOR_ID_ATI
, 0x4380, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
318 board_ahci
}, /* ATI SB600 non-raid */
319 { PCI_VENDOR_ID_ATI
, 0x4381, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
320 board_ahci
}, /* ATI SB600 raid */
321 { PCI_VENDOR_ID_VIA
, 0x3349, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
322 board_ahci_vt8251
}, /* VIA VT8251 */
323 { } /* terminate list */
327 static struct pci_driver ahci_pci_driver
= {
329 .id_table
= ahci_pci_tbl
,
330 .probe
= ahci_init_one
,
331 .remove
= ahci_remove_one
,
335 static inline unsigned long ahci_port_base_ul (unsigned long base
, unsigned int port
)
337 return base
+ 0x100 + (port
* 0x80);
340 static inline void __iomem
*ahci_port_base (void __iomem
*base
, unsigned int port
)
342 return (void __iomem
*) ahci_port_base_ul((unsigned long)base
, port
);
345 static int ahci_port_start(struct ata_port
*ap
)
347 struct device
*dev
= ap
->host_set
->dev
;
348 struct ahci_host_priv
*hpriv
= ap
->host_set
->private_data
;
349 struct ahci_port_priv
*pp
;
350 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
351 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
356 pp
= kmalloc(sizeof(*pp
), GFP_KERNEL
);
359 memset(pp
, 0, sizeof(*pp
));
361 rc
= ata_pad_alloc(ap
, dev
);
367 mem
= dma_alloc_coherent(dev
, AHCI_PORT_PRIV_DMA_SZ
, &mem_dma
, GFP_KERNEL
);
369 ata_pad_free(ap
, dev
);
373 memset(mem
, 0, AHCI_PORT_PRIV_DMA_SZ
);
376 * First item in chunk of DMA memory: 32-slot command table,
377 * 32 bytes each in size
380 pp
->cmd_slot_dma
= mem_dma
;
382 mem
+= AHCI_CMD_SLOT_SZ
;
383 mem_dma
+= AHCI_CMD_SLOT_SZ
;
386 * Second item: Received-FIS area
389 pp
->rx_fis_dma
= mem_dma
;
391 mem
+= AHCI_RX_FIS_SZ
;
392 mem_dma
+= AHCI_RX_FIS_SZ
;
395 * Third item: data area for storing a single command
396 * and its scatter-gather table
399 pp
->cmd_tbl_dma
= mem_dma
;
401 pp
->cmd_tbl_sg
= mem
+ AHCI_CMD_TBL_HDR
;
403 ap
->private_data
= pp
;
405 if (hpriv
->cap
& HOST_CAP_64
)
406 writel((pp
->cmd_slot_dma
>> 16) >> 16, port_mmio
+ PORT_LST_ADDR_HI
);
407 writel(pp
->cmd_slot_dma
& 0xffffffff, port_mmio
+ PORT_LST_ADDR
);
408 readl(port_mmio
+ PORT_LST_ADDR
); /* flush */
410 if (hpriv
->cap
& HOST_CAP_64
)
411 writel((pp
->rx_fis_dma
>> 16) >> 16, port_mmio
+ PORT_FIS_ADDR_HI
);
412 writel(pp
->rx_fis_dma
& 0xffffffff, port_mmio
+ PORT_FIS_ADDR
);
413 readl(port_mmio
+ PORT_FIS_ADDR
); /* flush */
415 writel(PORT_CMD_ICC_ACTIVE
| PORT_CMD_FIS_RX
|
416 PORT_CMD_POWER_ON
| PORT_CMD_SPIN_UP
|
417 PORT_CMD_START
, port_mmio
+ PORT_CMD
);
418 readl(port_mmio
+ PORT_CMD
); /* flush */
424 static void ahci_port_stop(struct ata_port
*ap
)
426 struct device
*dev
= ap
->host_set
->dev
;
427 struct ahci_port_priv
*pp
= ap
->private_data
;
428 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
429 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
432 tmp
= readl(port_mmio
+ PORT_CMD
);
433 tmp
&= ~(PORT_CMD_START
| PORT_CMD_FIS_RX
);
434 writel(tmp
, port_mmio
+ PORT_CMD
);
435 readl(port_mmio
+ PORT_CMD
); /* flush */
437 /* spec says 500 msecs for each PORT_CMD_{START,FIS_RX} bit, so
438 * this is slightly incorrect.
442 ap
->private_data
= NULL
;
443 dma_free_coherent(dev
, AHCI_PORT_PRIV_DMA_SZ
,
444 pp
->cmd_slot
, pp
->cmd_slot_dma
);
445 ata_pad_free(ap
, dev
);
449 static u32
ahci_scr_read (struct ata_port
*ap
, unsigned int sc_reg_in
)
454 case SCR_STATUS
: sc_reg
= 0; break;
455 case SCR_CONTROL
: sc_reg
= 1; break;
456 case SCR_ERROR
: sc_reg
= 2; break;
457 case SCR_ACTIVE
: sc_reg
= 3; break;
462 return readl((void __iomem
*) ap
->ioaddr
.scr_addr
+ (sc_reg
* 4));
466 static void ahci_scr_write (struct ata_port
*ap
, unsigned int sc_reg_in
,
472 case SCR_STATUS
: sc_reg
= 0; break;
473 case SCR_CONTROL
: sc_reg
= 1; break;
474 case SCR_ERROR
: sc_reg
= 2; break;
475 case SCR_ACTIVE
: sc_reg
= 3; break;
480 writel(val
, (void __iomem
*) ap
->ioaddr
.scr_addr
+ (sc_reg
* 4));
483 static int ahci_stop_engine(struct ata_port
*ap
)
485 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
486 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
490 tmp
= readl(port_mmio
+ PORT_CMD
);
491 tmp
&= ~PORT_CMD_START
;
492 writel(tmp
, port_mmio
+ PORT_CMD
);
494 /* wait for engine to stop. TODO: this could be
495 * as long as 500 msec
499 tmp
= readl(port_mmio
+ PORT_CMD
);
500 if ((tmp
& PORT_CMD_LIST_ON
) == 0)
508 static void ahci_start_engine(struct ata_port
*ap
)
510 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
511 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
514 tmp
= readl(port_mmio
+ PORT_CMD
);
515 tmp
|= PORT_CMD_START
;
516 writel(tmp
, port_mmio
+ PORT_CMD
);
517 readl(port_mmio
+ PORT_CMD
); /* flush */
520 static unsigned int ahci_dev_classify(struct ata_port
*ap
)
522 void __iomem
*port_mmio
= (void __iomem
*) ap
->ioaddr
.cmd_addr
;
523 struct ata_taskfile tf
;
526 tmp
= readl(port_mmio
+ PORT_SIG
);
527 tf
.lbah
= (tmp
>> 24) & 0xff;
528 tf
.lbam
= (tmp
>> 16) & 0xff;
529 tf
.lbal
= (tmp
>> 8) & 0xff;
530 tf
.nsect
= (tmp
) & 0xff;
532 return ata_dev_classify(&tf
);
535 static void ahci_fill_cmd_slot(struct ahci_port_priv
*pp
, u32 opts
)
537 pp
->cmd_slot
[0].opts
= cpu_to_le32(opts
);
538 pp
->cmd_slot
[0].status
= 0;
539 pp
->cmd_slot
[0].tbl_addr
= cpu_to_le32(pp
->cmd_tbl_dma
& 0xffffffff);
540 pp
->cmd_slot
[0].tbl_addr_hi
= cpu_to_le32((pp
->cmd_tbl_dma
>> 16) >> 16);
543 static int ahci_clo(struct ata_port
*ap
)
545 void __iomem
*port_mmio
= (void __iomem
*) ap
->ioaddr
.cmd_addr
;
546 struct ahci_host_priv
*hpriv
= ap
->host_set
->private_data
;
549 if (!(hpriv
->cap
& HOST_CAP_CLO
))
552 tmp
= readl(port_mmio
+ PORT_CMD
);
554 writel(tmp
, port_mmio
+ PORT_CMD
);
556 tmp
= ata_wait_register(port_mmio
+ PORT_CMD
,
557 PORT_CMD_CLO
, PORT_CMD_CLO
, 1, 500);
558 if (tmp
& PORT_CMD_CLO
)
564 static int ahci_softreset(struct ata_port
*ap
, unsigned int *class)
566 struct ahci_port_priv
*pp
= ap
->private_data
;
567 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
568 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
569 const u32 cmd_fis_len
= 5; /* five dwords */
570 const char *reason
= NULL
;
571 struct ata_taskfile tf
;
578 if (ata_port_offline(ap
)) {
579 DPRINTK("PHY reports no device\n");
580 *class = ATA_DEV_NONE
;
584 /* prepare for SRST (AHCI-1.1 10.4.1) */
585 rc
= ahci_stop_engine(ap
);
587 reason
= "failed to stop engine";
591 /* check BUSY/DRQ, perform Command List Override if necessary */
592 ahci_tf_read(ap
, &tf
);
593 if (tf
.command
& (ATA_BUSY
| ATA_DRQ
)) {
596 if (rc
== -EOPNOTSUPP
) {
597 reason
= "port busy but CLO unavailable";
600 reason
= "port busy but CLO failed";
606 ahci_start_engine(ap
);
608 ata_tf_init(ap
->device
, &tf
);
611 /* issue the first D2H Register FIS */
612 ahci_fill_cmd_slot(pp
, cmd_fis_len
| AHCI_CMD_RESET
| AHCI_CMD_CLR_BUSY
);
615 ata_tf_to_fis(&tf
, fis
, 0);
616 fis
[1] &= ~(1 << 7); /* turn off Command FIS bit */
618 writel(1, port_mmio
+ PORT_CMD_ISSUE
);
620 tmp
= ata_wait_register(port_mmio
+ PORT_CMD_ISSUE
, 0x1, 0x1, 1, 500);
623 reason
= "1st FIS failed";
627 /* spec says at least 5us, but be generous and sleep for 1ms */
630 /* issue the second D2H Register FIS */
631 ahci_fill_cmd_slot(pp
, cmd_fis_len
);
634 ata_tf_to_fis(&tf
, fis
, 0);
635 fis
[1] &= ~(1 << 7); /* turn off Command FIS bit */
637 writel(1, port_mmio
+ PORT_CMD_ISSUE
);
638 readl(port_mmio
+ PORT_CMD_ISSUE
); /* flush */
640 /* spec mandates ">= 2ms" before checking status.
641 * We wait 150ms, because that was the magic delay used for
642 * ATAPI devices in Hale Landis's ATADRVR, for the period of time
643 * between when the ATA command register is written, and then
644 * status is checked. Because waiting for "a while" before
645 * checking status is fine, post SRST, we perform this magic
646 * delay here as well.
650 *class = ATA_DEV_NONE
;
651 if (ata_port_online(ap
)) {
652 if (ata_busy_sleep(ap
, ATA_TMOUT_BOOT_QUICK
, ATA_TMOUT_BOOT
)) {
654 reason
= "device not ready";
657 *class = ahci_dev_classify(ap
);
660 DPRINTK("EXIT, class=%u\n", *class);
664 ahci_start_engine(ap
);
666 ata_port_printk(ap
, KERN_ERR
, "softreset failed (%s)\n", reason
);
670 static int ahci_hardreset(struct ata_port
*ap
, unsigned int *class)
676 ahci_stop_engine(ap
);
677 rc
= sata_std_hardreset(ap
, class);
678 ahci_start_engine(ap
);
680 if (rc
== 0 && ata_port_online(ap
))
681 *class = ahci_dev_classify(ap
);
682 if (*class == ATA_DEV_UNKNOWN
)
683 *class = ATA_DEV_NONE
;
685 DPRINTK("EXIT, rc=%d, class=%u\n", rc
, *class);
689 static void ahci_postreset(struct ata_port
*ap
, unsigned int *class)
691 void __iomem
*port_mmio
= (void __iomem
*) ap
->ioaddr
.cmd_addr
;
694 ata_std_postreset(ap
, class);
696 /* Make sure port's ATAPI bit is set appropriately */
697 new_tmp
= tmp
= readl(port_mmio
+ PORT_CMD
);
698 if (*class == ATA_DEV_ATAPI
)
699 new_tmp
|= PORT_CMD_ATAPI
;
701 new_tmp
&= ~PORT_CMD_ATAPI
;
702 if (new_tmp
!= tmp
) {
703 writel(new_tmp
, port_mmio
+ PORT_CMD
);
704 readl(port_mmio
+ PORT_CMD
); /* flush */
708 static int ahci_probe_reset(struct ata_port
*ap
, unsigned int *classes
)
710 if ((ap
->flags
& AHCI_FLAG_RESET_NEEDS_CLO
) &&
711 (ata_busy_wait(ap
, ATA_BUSY
, 1000) & ATA_BUSY
)) {
712 /* ATA_BUSY hasn't cleared, so send a CLO */
716 return ata_drive_probe_reset(ap
, ata_std_probeinit
,
717 ahci_softreset
, ahci_hardreset
,
718 ahci_postreset
, classes
);
721 static u8
ahci_check_status(struct ata_port
*ap
)
723 void __iomem
*mmio
= (void __iomem
*) ap
->ioaddr
.cmd_addr
;
725 return readl(mmio
+ PORT_TFDATA
) & 0xFF;
728 static void ahci_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
)
730 struct ahci_port_priv
*pp
= ap
->private_data
;
731 u8
*d2h_fis
= pp
->rx_fis
+ RX_FIS_D2H_REG
;
733 ata_tf_from_fis(d2h_fis
, tf
);
736 static unsigned int ahci_fill_sg(struct ata_queued_cmd
*qc
)
738 struct ahci_port_priv
*pp
= qc
->ap
->private_data
;
739 struct scatterlist
*sg
;
740 struct ahci_sg
*ahci_sg
;
741 unsigned int n_sg
= 0;
746 * Next, the S/G list.
748 ahci_sg
= pp
->cmd_tbl_sg
;
749 ata_for_each_sg(sg
, qc
) {
750 dma_addr_t addr
= sg_dma_address(sg
);
751 u32 sg_len
= sg_dma_len(sg
);
753 ahci_sg
->addr
= cpu_to_le32(addr
& 0xffffffff);
754 ahci_sg
->addr_hi
= cpu_to_le32((addr
>> 16) >> 16);
755 ahci_sg
->flags_size
= cpu_to_le32(sg_len
- 1);
764 static void ahci_qc_prep(struct ata_queued_cmd
*qc
)
766 struct ata_port
*ap
= qc
->ap
;
767 struct ahci_port_priv
*pp
= ap
->private_data
;
768 int is_atapi
= is_atapi_taskfile(&qc
->tf
);
770 const u32 cmd_fis_len
= 5; /* five dwords */
774 * Fill in command table information. First, the header,
775 * a SATA Register - Host to Device command FIS.
777 ata_tf_to_fis(&qc
->tf
, pp
->cmd_tbl
, 0);
779 memset(pp
->cmd_tbl
+ AHCI_CMD_TBL_CDB
, 0, 32);
780 memcpy(pp
->cmd_tbl
+ AHCI_CMD_TBL_CDB
, qc
->cdb
,
785 if (qc
->flags
& ATA_QCFLAG_DMAMAP
)
786 n_elem
= ahci_fill_sg(qc
);
789 * Fill in command slot information.
791 opts
= cmd_fis_len
| n_elem
<< 16;
792 if (qc
->tf
.flags
& ATA_TFLAG_WRITE
)
793 opts
|= AHCI_CMD_WRITE
;
795 opts
|= AHCI_CMD_ATAPI
| AHCI_CMD_PREFETCH
;
797 ahci_fill_cmd_slot(pp
, opts
);
800 static void ahci_error_intr(struct ata_port
*ap
, u32 irq_stat
)
802 struct ahci_port_priv
*pp
= ap
->private_data
;
803 struct ata_eh_info
*ehi
= &ap
->eh_info
;
804 unsigned int err_mask
= 0, action
= 0;
805 struct ata_queued_cmd
*qc
;
808 ata_ehi_clear_desc(ehi
);
810 /* AHCI needs SError cleared; otherwise, it might lock up */
811 serror
= ahci_scr_read(ap
, SCR_ERROR
);
812 ahci_scr_write(ap
, SCR_ERROR
, serror
);
814 /* analyze @irq_stat */
815 ata_ehi_push_desc(ehi
, "irq_stat 0x%08x", irq_stat
);
817 if (irq_stat
& PORT_IRQ_TF_ERR
)
818 err_mask
|= AC_ERR_DEV
;
820 if (irq_stat
& (PORT_IRQ_HBUS_ERR
| PORT_IRQ_HBUS_DATA_ERR
)) {
821 err_mask
|= AC_ERR_HOST_BUS
;
822 action
|= ATA_EH_SOFTRESET
;
825 if (irq_stat
& PORT_IRQ_IF_ERR
) {
826 err_mask
|= AC_ERR_ATA_BUS
;
827 action
|= ATA_EH_SOFTRESET
;
828 ata_ehi_push_desc(ehi
, ", interface fatal error");
831 if (irq_stat
& (PORT_IRQ_CONNECT
| PORT_IRQ_PHYRDY
)) {
832 err_mask
|= AC_ERR_ATA_BUS
;
833 action
|= ATA_EH_SOFTRESET
;
834 ata_ehi_push_desc(ehi
, ", %s", irq_stat
& PORT_IRQ_CONNECT
?
835 "connection status changed" : "PHY RDY changed");
838 if (irq_stat
& PORT_IRQ_UNK_FIS
) {
839 u32
*unk
= (u32
*)(pp
->rx_fis
+ RX_FIS_UNK
);
841 err_mask
|= AC_ERR_HSM
;
842 action
|= ATA_EH_SOFTRESET
;
843 ata_ehi_push_desc(ehi
, ", unknown FIS %08x %08x %08x %08x",
844 unk
[0], unk
[1], unk
[2], unk
[3]);
847 /* okay, let's hand over to EH */
848 ehi
->serror
|= serror
;
849 ehi
->action
|= action
;
851 qc
= ata_qc_from_tag(ap
, ap
->active_tag
);
853 qc
->err_mask
|= err_mask
;
855 ehi
->err_mask
|= err_mask
;
857 if (irq_stat
& PORT_IRQ_FREEZE
)
863 static void ahci_host_intr(struct ata_port
*ap
)
865 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
866 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
867 struct ata_queued_cmd
*qc
;
870 status
= readl(port_mmio
+ PORT_IRQ_STAT
);
871 writel(status
, port_mmio
+ PORT_IRQ_STAT
);
873 if (unlikely(status
& PORT_IRQ_ERROR
)) {
874 ahci_error_intr(ap
, status
);
878 if ((qc
= ata_qc_from_tag(ap
, ap
->active_tag
))) {
879 ci
= readl(port_mmio
+ PORT_CMD_ISSUE
);
880 if ((ci
& 0x1) == 0) {
886 /* hmmm... a spurious interupt */
888 /* ignore interim PIO setup fis interrupts */
889 if (ata_tag_valid(ap
->active_tag
)) {
890 struct ata_queued_cmd
*qc
=
891 ata_qc_from_tag(ap
, ap
->active_tag
);
893 if (qc
&& qc
->tf
.protocol
== ATA_PROT_PIO
&&
894 (status
& PORT_IRQ_PIOS_FIS
))
899 ata_port_printk(ap
, KERN_INFO
, "spurious interrupt "
900 "(irq_stat 0x%x active_tag %d)\n",
901 status
, ap
->active_tag
);
904 static void ahci_irq_clear(struct ata_port
*ap
)
909 static irqreturn_t
ahci_interrupt (int irq
, void *dev_instance
, struct pt_regs
*regs
)
911 struct ata_host_set
*host_set
= dev_instance
;
912 struct ahci_host_priv
*hpriv
;
913 unsigned int i
, handled
= 0;
915 u32 irq_stat
, irq_ack
= 0;
919 hpriv
= host_set
->private_data
;
920 mmio
= host_set
->mmio_base
;
922 /* sigh. 0xffffffff is a valid return from h/w */
923 irq_stat
= readl(mmio
+ HOST_IRQ_STAT
);
924 irq_stat
&= hpriv
->port_map
;
928 spin_lock(&host_set
->lock
);
930 for (i
= 0; i
< host_set
->n_ports
; i
++) {
933 if (!(irq_stat
& (1 << i
)))
936 ap
= host_set
->ports
[i
];
939 VPRINTK("port %u\n", i
);
941 VPRINTK("port %u (no irq)\n", i
);
943 dev_printk(KERN_WARNING
, host_set
->dev
,
944 "interrupt on disabled port %u\n", i
);
951 writel(irq_ack
, mmio
+ HOST_IRQ_STAT
);
955 spin_unlock(&host_set
->lock
);
959 return IRQ_RETVAL(handled
);
962 static unsigned int ahci_qc_issue(struct ata_queued_cmd
*qc
)
964 struct ata_port
*ap
= qc
->ap
;
965 void __iomem
*port_mmio
= (void __iomem
*) ap
->ioaddr
.cmd_addr
;
967 writel(1, port_mmio
+ PORT_CMD_ISSUE
);
968 readl(port_mmio
+ PORT_CMD_ISSUE
); /* flush */
973 static void ahci_freeze(struct ata_port
*ap
)
975 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
976 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
979 writel(0, port_mmio
+ PORT_IRQ_MASK
);
982 static void ahci_thaw(struct ata_port
*ap
)
984 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
985 void __iomem
*port_mmio
= ahci_port_base(mmio
, ap
->port_no
);
989 tmp
= readl(port_mmio
+ PORT_IRQ_STAT
);
990 writel(tmp
, port_mmio
+ PORT_IRQ_STAT
);
991 writel(1 << ap
->id
, mmio
+ HOST_IRQ_STAT
);
993 /* turn IRQ back on */
994 writel(DEF_PORT_IRQ
, port_mmio
+ PORT_IRQ_MASK
);
997 static void ahci_error_handler(struct ata_port
*ap
)
999 if (!(ap
->flags
& ATA_FLAG_FROZEN
)) {
1000 /* restart engine */
1001 ahci_stop_engine(ap
);
1002 ahci_start_engine(ap
);
1005 /* perform recovery */
1006 ata_do_eh(ap
, ahci_softreset
, ahci_hardreset
, ahci_postreset
);
1009 static void ahci_post_internal_cmd(struct ata_queued_cmd
*qc
)
1011 struct ata_port
*ap
= qc
->ap
;
1013 if (qc
->flags
& ATA_QCFLAG_FAILED
)
1014 qc
->err_mask
|= AC_ERR_OTHER
;
1017 /* make DMA engine forget about the failed command */
1018 ahci_stop_engine(ap
);
1019 ahci_start_engine(ap
);
1023 static void ahci_setup_port(struct ata_ioports
*port
, unsigned long base
,
1024 unsigned int port_idx
)
1026 VPRINTK("ENTER, base==0x%lx, port_idx %u\n", base
, port_idx
);
1027 base
= ahci_port_base_ul(base
, port_idx
);
1028 VPRINTK("base now==0x%lx\n", base
);
1030 port
->cmd_addr
= base
;
1031 port
->scr_addr
= base
+ PORT_SCR
;
1036 static int ahci_host_init(struct ata_probe_ent
*probe_ent
)
1038 struct ahci_host_priv
*hpriv
= probe_ent
->private_data
;
1039 struct pci_dev
*pdev
= to_pci_dev(probe_ent
->dev
);
1040 void __iomem
*mmio
= probe_ent
->mmio_base
;
1042 unsigned int i
, j
, using_dac
;
1044 void __iomem
*port_mmio
;
1046 cap_save
= readl(mmio
+ HOST_CAP
);
1047 cap_save
&= ( (1<<28) | (1<<17) );
1048 cap_save
|= (1 << 27);
1050 /* global controller reset */
1051 tmp
= readl(mmio
+ HOST_CTL
);
1052 if ((tmp
& HOST_RESET
) == 0) {
1053 writel(tmp
| HOST_RESET
, mmio
+ HOST_CTL
);
1054 readl(mmio
+ HOST_CTL
); /* flush */
1057 /* reset must complete within 1 second, or
1058 * the hardware should be considered fried.
1062 tmp
= readl(mmio
+ HOST_CTL
);
1063 if (tmp
& HOST_RESET
) {
1064 dev_printk(KERN_ERR
, &pdev
->dev
,
1065 "controller reset failed (0x%x)\n", tmp
);
1069 writel(HOST_AHCI_EN
, mmio
+ HOST_CTL
);
1070 (void) readl(mmio
+ HOST_CTL
); /* flush */
1071 writel(cap_save
, mmio
+ HOST_CAP
);
1072 writel(0xf, mmio
+ HOST_PORTS_IMPL
);
1073 (void) readl(mmio
+ HOST_PORTS_IMPL
); /* flush */
1075 if (pdev
->vendor
== PCI_VENDOR_ID_INTEL
) {
1078 pci_read_config_word(pdev
, 0x92, &tmp16
);
1080 pci_write_config_word(pdev
, 0x92, tmp16
);
1083 hpriv
->cap
= readl(mmio
+ HOST_CAP
);
1084 hpriv
->port_map
= readl(mmio
+ HOST_PORTS_IMPL
);
1085 probe_ent
->n_ports
= (hpriv
->cap
& 0x1f) + 1;
1087 VPRINTK("cap 0x%x port_map 0x%x n_ports %d\n",
1088 hpriv
->cap
, hpriv
->port_map
, probe_ent
->n_ports
);
1090 using_dac
= hpriv
->cap
& HOST_CAP_64
;
1092 !pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) {
1093 rc
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
1095 rc
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
1097 dev_printk(KERN_ERR
, &pdev
->dev
,
1098 "64-bit DMA enable failed\n");
1103 rc
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
1105 dev_printk(KERN_ERR
, &pdev
->dev
,
1106 "32-bit DMA enable failed\n");
1109 rc
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
1111 dev_printk(KERN_ERR
, &pdev
->dev
,
1112 "32-bit consistent DMA enable failed\n");
1117 for (i
= 0; i
< probe_ent
->n_ports
; i
++) {
1118 #if 0 /* BIOSen initialize this incorrectly */
1119 if (!(hpriv
->port_map
& (1 << i
)))
1123 port_mmio
= ahci_port_base(mmio
, i
);
1124 VPRINTK("mmio %p port_mmio %p\n", mmio
, port_mmio
);
1126 ahci_setup_port(&probe_ent
->port
[i
],
1127 (unsigned long) mmio
, i
);
1129 /* make sure port is not active */
1130 tmp
= readl(port_mmio
+ PORT_CMD
);
1131 VPRINTK("PORT_CMD 0x%x\n", tmp
);
1132 if (tmp
& (PORT_CMD_LIST_ON
| PORT_CMD_FIS_ON
|
1133 PORT_CMD_FIS_RX
| PORT_CMD_START
)) {
1134 tmp
&= ~(PORT_CMD_LIST_ON
| PORT_CMD_FIS_ON
|
1135 PORT_CMD_FIS_RX
| PORT_CMD_START
);
1136 writel(tmp
, port_mmio
+ PORT_CMD
);
1137 readl(port_mmio
+ PORT_CMD
); /* flush */
1139 /* spec says 500 msecs for each bit, so
1140 * this is slightly incorrect.
1145 writel(PORT_CMD_SPIN_UP
, port_mmio
+ PORT_CMD
);
1150 tmp
= readl(port_mmio
+ PORT_SCR_STAT
);
1151 if ((tmp
& 0xf) == 0x3)
1156 tmp
= readl(port_mmio
+ PORT_SCR_ERR
);
1157 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp
);
1158 writel(tmp
, port_mmio
+ PORT_SCR_ERR
);
1160 /* ack any pending irq events for this port */
1161 tmp
= readl(port_mmio
+ PORT_IRQ_STAT
);
1162 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp
);
1164 writel(tmp
, port_mmio
+ PORT_IRQ_STAT
);
1166 writel(1 << i
, mmio
+ HOST_IRQ_STAT
);
1169 tmp
= readl(mmio
+ HOST_CTL
);
1170 VPRINTK("HOST_CTL 0x%x\n", tmp
);
1171 writel(tmp
| HOST_IRQ_EN
, mmio
+ HOST_CTL
);
1172 tmp
= readl(mmio
+ HOST_CTL
);
1173 VPRINTK("HOST_CTL 0x%x\n", tmp
);
1175 pci_set_master(pdev
);
1180 static void ahci_print_info(struct ata_probe_ent
*probe_ent
)
1182 struct ahci_host_priv
*hpriv
= probe_ent
->private_data
;
1183 struct pci_dev
*pdev
= to_pci_dev(probe_ent
->dev
);
1184 void __iomem
*mmio
= probe_ent
->mmio_base
;
1185 u32 vers
, cap
, impl
, speed
;
1186 const char *speed_s
;
1190 vers
= readl(mmio
+ HOST_VERSION
);
1192 impl
= hpriv
->port_map
;
1194 speed
= (cap
>> 20) & 0xf;
1197 else if (speed
== 2)
1202 pci_read_config_word(pdev
, 0x0a, &cc
);
1205 else if (cc
== 0x0106)
1207 else if (cc
== 0x0104)
1212 dev_printk(KERN_INFO
, &pdev
->dev
,
1213 "AHCI %02x%02x.%02x%02x "
1214 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
1217 (vers
>> 24) & 0xff,
1218 (vers
>> 16) & 0xff,
1222 ((cap
>> 8) & 0x1f) + 1,
1228 dev_printk(KERN_INFO
, &pdev
->dev
,
1234 cap
& (1 << 31) ? "64bit " : "",
1235 cap
& (1 << 30) ? "ncq " : "",
1236 cap
& (1 << 28) ? "ilck " : "",
1237 cap
& (1 << 27) ? "stag " : "",
1238 cap
& (1 << 26) ? "pm " : "",
1239 cap
& (1 << 25) ? "led " : "",
1241 cap
& (1 << 24) ? "clo " : "",
1242 cap
& (1 << 19) ? "nz " : "",
1243 cap
& (1 << 18) ? "only " : "",
1244 cap
& (1 << 17) ? "pmp " : "",
1245 cap
& (1 << 15) ? "pio " : "",
1246 cap
& (1 << 14) ? "slum " : "",
1247 cap
& (1 << 13) ? "part " : ""
1251 static int ahci_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
1253 static int printed_version
;
1254 struct ata_probe_ent
*probe_ent
= NULL
;
1255 struct ahci_host_priv
*hpriv
;
1257 void __iomem
*mmio_base
;
1258 unsigned int board_idx
= (unsigned int) ent
->driver_data
;
1259 int have_msi
, pci_dev_busy
= 0;
1264 if (!printed_version
++)
1265 dev_printk(KERN_DEBUG
, &pdev
->dev
, "version " DRV_VERSION
"\n");
1267 rc
= pci_enable_device(pdev
);
1271 rc
= pci_request_regions(pdev
, DRV_NAME
);
1277 if (pci_enable_msi(pdev
) == 0)
1284 probe_ent
= kmalloc(sizeof(*probe_ent
), GFP_KERNEL
);
1285 if (probe_ent
== NULL
) {
1290 memset(probe_ent
, 0, sizeof(*probe_ent
));
1291 probe_ent
->dev
= pci_dev_to_dev(pdev
);
1292 INIT_LIST_HEAD(&probe_ent
->node
);
1294 mmio_base
= pci_iomap(pdev
, AHCI_PCI_BAR
, 0);
1295 if (mmio_base
== NULL
) {
1297 goto err_out_free_ent
;
1299 base
= (unsigned long) mmio_base
;
1301 hpriv
= kmalloc(sizeof(*hpriv
), GFP_KERNEL
);
1304 goto err_out_iounmap
;
1306 memset(hpriv
, 0, sizeof(*hpriv
));
1308 probe_ent
->sht
= ahci_port_info
[board_idx
].sht
;
1309 probe_ent
->host_flags
= ahci_port_info
[board_idx
].host_flags
;
1310 probe_ent
->pio_mask
= ahci_port_info
[board_idx
].pio_mask
;
1311 probe_ent
->udma_mask
= ahci_port_info
[board_idx
].udma_mask
;
1312 probe_ent
->port_ops
= ahci_port_info
[board_idx
].port_ops
;
1314 probe_ent
->irq
= pdev
->irq
;
1315 probe_ent
->irq_flags
= SA_SHIRQ
;
1316 probe_ent
->mmio_base
= mmio_base
;
1317 probe_ent
->private_data
= hpriv
;
1320 hpriv
->flags
|= AHCI_FLAG_MSI
;
1322 /* JMicron-specific fixup: make sure we're in AHCI mode */
1323 if (pdev
->vendor
== 0x197b)
1324 pci_write_config_byte(pdev
, 0x41, 0xa1);
1326 /* initialize adapter */
1327 rc
= ahci_host_init(probe_ent
);
1331 ahci_print_info(probe_ent
);
1333 /* FIXME: check ata_device_add return value */
1334 ata_device_add(probe_ent
);
1342 pci_iounmap(pdev
, mmio_base
);
1347 pci_disable_msi(pdev
);
1350 pci_release_regions(pdev
);
1353 pci_disable_device(pdev
);
1357 static void ahci_remove_one (struct pci_dev
*pdev
)
1359 struct device
*dev
= pci_dev_to_dev(pdev
);
1360 struct ata_host_set
*host_set
= dev_get_drvdata(dev
);
1361 struct ahci_host_priv
*hpriv
= host_set
->private_data
;
1362 struct ata_port
*ap
;
1366 for (i
= 0; i
< host_set
->n_ports
; i
++) {
1367 ap
= host_set
->ports
[i
];
1369 scsi_remove_host(ap
->host
);
1372 have_msi
= hpriv
->flags
& AHCI_FLAG_MSI
;
1373 free_irq(host_set
->irq
, host_set
);
1375 for (i
= 0; i
< host_set
->n_ports
; i
++) {
1376 ap
= host_set
->ports
[i
];
1378 ata_scsi_release(ap
->host
);
1379 scsi_host_put(ap
->host
);
1383 pci_iounmap(pdev
, host_set
->mmio_base
);
1387 pci_disable_msi(pdev
);
1390 pci_release_regions(pdev
);
1391 pci_disable_device(pdev
);
1392 dev_set_drvdata(dev
, NULL
);
1395 static int __init
ahci_init(void)
1397 return pci_module_init(&ahci_pci_driver
);
1400 static void __exit
ahci_exit(void)
1402 pci_unregister_driver(&ahci_pci_driver
);
1406 MODULE_AUTHOR("Jeff Garzik");
1407 MODULE_DESCRIPTION("AHCI SATA low-level driver");
1408 MODULE_LICENSE("GPL");
1409 MODULE_DEVICE_TABLE(pci
, ahci_pci_tbl
);
1410 MODULE_VERSION(DRV_VERSION
);
1412 module_init(ahci_init
);
1413 module_exit(ahci_exit
);