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,
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 |
140 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
142 PORT_IRQ_HBUS_DATA_ERR,
143 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
144 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
145 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
148 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
149 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
150 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
151 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
152 PORT_CMD_CLO = (1 << 3), /* Command list override */
153 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
154 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
155 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
157 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
158 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
159 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
161 /* hpriv->flags bits */
162 AHCI_FLAG_MSI = (1 << 0),
165 AHCI_FLAG_RESET_NEEDS_CLO = (1 << 24),
168 struct ahci_cmd_hdr {
183 struct ahci_host_priv {
185 u32 cap; /* cache of HOST_CAP register */
186 u32 port_map; /* cache of HOST_PORTS_IMPL reg */
189 struct ahci_port_priv {
190 struct ahci_cmd_hdr *cmd_slot;
191 dma_addr_t cmd_slot_dma;
193 dma_addr_t cmd_tbl_dma;
195 dma_addr_t rx_fis_dma;
198 static u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg);
199 static void ahci_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
200 static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
201 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
202 static irqreturn_t ahci_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
203 static int ahci_probe_reset(struct ata_port *ap, unsigned int *classes);
204 static void ahci_irq_clear(struct ata_port *ap);
205 static int ahci_port_start(struct ata_port *ap);
206 static void ahci_port_stop(struct ata_port *ap);
207 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
208 static void ahci_qc_prep(struct ata_queued_cmd *qc);
209 static u8 ahci_check_status(struct ata_port *ap);
210 static void ahci_freeze(struct ata_port *ap);
211 static void ahci_thaw(struct ata_port *ap);
212 static void ahci_error_handler(struct ata_port *ap);
213 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
214 static void ahci_remove_one (struct pci_dev *pdev);
216 static struct scsi_host_template ahci_sht = {
217 .module = THIS_MODULE,
219 .ioctl = ata_scsi_ioctl,
220 .queuecommand = ata_scsi_queuecmd,
221 .change_queue_depth = ata_scsi_change_queue_depth,
222 .can_queue = AHCI_MAX_CMDS - 1,
223 .this_id = ATA_SHT_THIS_ID,
224 .sg_tablesize = AHCI_MAX_SG,
225 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
226 .emulated = ATA_SHT_EMULATED,
227 .use_clustering = AHCI_USE_CLUSTERING,
228 .proc_name = DRV_NAME,
229 .dma_boundary = AHCI_DMA_BOUNDARY,
230 .slave_configure = ata_scsi_slave_config,
231 .slave_destroy = ata_scsi_slave_destroy,
232 .bios_param = ata_std_bios_param,
235 static const struct ata_port_operations ahci_ops = {
236 .port_disable = ata_port_disable,
238 .check_status = ahci_check_status,
239 .check_altstatus = ahci_check_status,
240 .dev_select = ata_noop_dev_select,
242 .tf_read = ahci_tf_read,
244 .probe_reset = ahci_probe_reset,
246 .qc_prep = ahci_qc_prep,
247 .qc_issue = ahci_qc_issue,
249 .irq_handler = ahci_interrupt,
250 .irq_clear = ahci_irq_clear,
252 .scr_read = ahci_scr_read,
253 .scr_write = ahci_scr_write,
255 .freeze = ahci_freeze,
258 .error_handler = ahci_error_handler,
259 .post_internal_cmd = ahci_post_internal_cmd,
261 .port_start = ahci_port_start,
262 .port_stop = ahci_port_stop,
265 static const struct ata_port_info ahci_port_info[] = {
269 .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
270 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
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 AHCI_FLAG_RESET_NEEDS_CLO,
281 .pio_mask = 0x1f, /* pio0-4 */
282 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
283 .port_ops = &ahci_ops,
287 static const struct pci_device_id ahci_pci_tbl[] = {
288 { PCI_VENDOR_ID_INTEL, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
289 board_ahci }, /* ICH6 */
290 { PCI_VENDOR_ID_INTEL, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
291 board_ahci }, /* ICH6M */
292 { PCI_VENDOR_ID_INTEL, 0x27c1, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
293 board_ahci }, /* ICH7 */
294 { PCI_VENDOR_ID_INTEL, 0x27c5, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
295 board_ahci }, /* ICH7M */
296 { PCI_VENDOR_ID_INTEL, 0x27c3, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
297 board_ahci }, /* ICH7R */
298 { PCI_VENDOR_ID_AL, 0x5288, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
299 board_ahci }, /* ULi M5288 */
300 { PCI_VENDOR_ID_INTEL, 0x2681, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
301 board_ahci }, /* ESB2 */
302 { PCI_VENDOR_ID_INTEL, 0x2682, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
303 board_ahci }, /* ESB2 */
304 { PCI_VENDOR_ID_INTEL, 0x2683, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
305 board_ahci }, /* ESB2 */
306 { PCI_VENDOR_ID_INTEL, 0x27c6, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
307 board_ahci }, /* ICH7-M DH */
308 { PCI_VENDOR_ID_INTEL, 0x2821, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
309 board_ahci }, /* ICH8 */
310 { PCI_VENDOR_ID_INTEL, 0x2822, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
311 board_ahci }, /* ICH8 */
312 { PCI_VENDOR_ID_INTEL, 0x2824, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
313 board_ahci }, /* ICH8 */
314 { PCI_VENDOR_ID_INTEL, 0x2829, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
315 board_ahci }, /* ICH8M */
316 { PCI_VENDOR_ID_INTEL, 0x282a, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
317 board_ahci }, /* ICH8M */
318 { 0x197b, 0x2360, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
319 board_ahci }, /* JMicron JMB360 */
320 { 0x197b, 0x2363, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
321 board_ahci }, /* JMicron JMB363 */
322 { PCI_VENDOR_ID_ATI, 0x4380, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
323 board_ahci }, /* ATI SB600 non-raid */
324 { PCI_VENDOR_ID_ATI, 0x4381, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
325 board_ahci }, /* ATI SB600 raid */
326 { PCI_VENDOR_ID_VIA, 0x3349, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
327 board_ahci_vt8251 }, /* VIA VT8251 */
328 { } /* terminate list */
332 static struct pci_driver ahci_pci_driver = {
334 .id_table = ahci_pci_tbl,
335 .probe = ahci_init_one,
336 .remove = ahci_remove_one,
340 static inline unsigned long ahci_port_base_ul (unsigned long base, unsigned int port)
342 return base + 0x100 + (port * 0x80);
345 static inline void __iomem *ahci_port_base (void __iomem *base, unsigned int port)
347 return (void __iomem *) ahci_port_base_ul((unsigned long)base, port);
350 static int ahci_port_start(struct ata_port *ap)
352 struct device *dev = ap->host_set->dev;
353 struct ahci_host_priv *hpriv = ap->host_set->private_data;
354 struct ahci_port_priv *pp;
355 void __iomem *mmio = ap->host_set->mmio_base;
356 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
361 pp = kmalloc(sizeof(*pp), GFP_KERNEL);
364 memset(pp, 0, sizeof(*pp));
366 rc = ata_pad_alloc(ap, dev);
372 mem = dma_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma, GFP_KERNEL);
374 ata_pad_free(ap, dev);
378 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
381 * First item in chunk of DMA memory: 32-slot command table,
382 * 32 bytes each in size
385 pp->cmd_slot_dma = mem_dma;
387 mem += AHCI_CMD_SLOT_SZ;
388 mem_dma += AHCI_CMD_SLOT_SZ;
391 * Second item: Received-FIS area
394 pp->rx_fis_dma = mem_dma;
396 mem += AHCI_RX_FIS_SZ;
397 mem_dma += AHCI_RX_FIS_SZ;
400 * Third item: data area for storing a single command
401 * and its scatter-gather table
404 pp->cmd_tbl_dma = mem_dma;
406 ap->private_data = pp;
408 if (hpriv->cap & HOST_CAP_64)
409 writel((pp->cmd_slot_dma >> 16) >> 16, port_mmio + PORT_LST_ADDR_HI);
410 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
411 readl(port_mmio + PORT_LST_ADDR); /* flush */
413 if (hpriv->cap & HOST_CAP_64)
414 writel((pp->rx_fis_dma >> 16) >> 16, port_mmio + PORT_FIS_ADDR_HI);
415 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
416 readl(port_mmio + PORT_FIS_ADDR); /* flush */
418 writel(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX |
419 PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP |
420 PORT_CMD_START, port_mmio + PORT_CMD);
421 readl(port_mmio + PORT_CMD); /* flush */
427 static void ahci_port_stop(struct ata_port *ap)
429 struct device *dev = ap->host_set->dev;
430 struct ahci_port_priv *pp = ap->private_data;
431 void __iomem *mmio = ap->host_set->mmio_base;
432 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
435 tmp = readl(port_mmio + PORT_CMD);
436 tmp &= ~(PORT_CMD_START | PORT_CMD_FIS_RX);
437 writel(tmp, port_mmio + PORT_CMD);
438 readl(port_mmio + PORT_CMD); /* flush */
440 /* spec says 500 msecs for each PORT_CMD_{START,FIS_RX} bit, so
441 * this is slightly incorrect.
445 ap->private_data = NULL;
446 dma_free_coherent(dev, AHCI_PORT_PRIV_DMA_SZ,
447 pp->cmd_slot, pp->cmd_slot_dma);
448 ata_pad_free(ap, dev);
452 static u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg_in)
457 case SCR_STATUS: sc_reg = 0; break;
458 case SCR_CONTROL: sc_reg = 1; break;
459 case SCR_ERROR: sc_reg = 2; break;
460 case SCR_ACTIVE: sc_reg = 3; break;
465 return readl((void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
469 static void ahci_scr_write (struct ata_port *ap, unsigned int sc_reg_in,
475 case SCR_STATUS: sc_reg = 0; break;
476 case SCR_CONTROL: sc_reg = 1; break;
477 case SCR_ERROR: sc_reg = 2; break;
478 case SCR_ACTIVE: sc_reg = 3; break;
483 writel(val, (void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
486 static int ahci_stop_engine(struct ata_port *ap)
488 void __iomem *mmio = ap->host_set->mmio_base;
489 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
493 tmp = readl(port_mmio + PORT_CMD);
494 tmp &= ~PORT_CMD_START;
495 writel(tmp, port_mmio + PORT_CMD);
497 /* wait for engine to stop. TODO: this could be
498 * as long as 500 msec
502 tmp = readl(port_mmio + PORT_CMD);
503 if ((tmp & PORT_CMD_LIST_ON) == 0)
511 static void ahci_start_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);
517 tmp = readl(port_mmio + PORT_CMD);
518 tmp |= PORT_CMD_START;
519 writel(tmp, port_mmio + PORT_CMD);
520 readl(port_mmio + PORT_CMD); /* flush */
523 static unsigned int ahci_dev_classify(struct ata_port *ap)
525 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
526 struct ata_taskfile tf;
529 tmp = readl(port_mmio + PORT_SIG);
530 tf.lbah = (tmp >> 24) & 0xff;
531 tf.lbam = (tmp >> 16) & 0xff;
532 tf.lbal = (tmp >> 8) & 0xff;
533 tf.nsect = (tmp) & 0xff;
535 return ata_dev_classify(&tf);
538 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
541 dma_addr_t cmd_tbl_dma;
543 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
545 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
546 pp->cmd_slot[tag].status = 0;
547 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
548 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
551 static int ahci_clo(struct ata_port *ap)
553 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
554 struct ahci_host_priv *hpriv = ap->host_set->private_data;
557 if (!(hpriv->cap & HOST_CAP_CLO))
560 tmp = readl(port_mmio + PORT_CMD);
562 writel(tmp, port_mmio + PORT_CMD);
564 tmp = ata_wait_register(port_mmio + PORT_CMD,
565 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
566 if (tmp & PORT_CMD_CLO)
572 static int ahci_softreset(struct ata_port *ap, unsigned int *class)
574 struct ahci_port_priv *pp = ap->private_data;
575 void __iomem *mmio = ap->host_set->mmio_base;
576 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
577 const u32 cmd_fis_len = 5; /* five dwords */
578 const char *reason = NULL;
579 struct ata_taskfile tf;
586 if (ata_port_offline(ap)) {
587 DPRINTK("PHY reports no device\n");
588 *class = ATA_DEV_NONE;
592 /* prepare for SRST (AHCI-1.1 10.4.1) */
593 rc = ahci_stop_engine(ap);
595 reason = "failed to stop engine";
599 /* check BUSY/DRQ, perform Command List Override if necessary */
600 ahci_tf_read(ap, &tf);
601 if (tf.command & (ATA_BUSY | ATA_DRQ)) {
604 if (rc == -EOPNOTSUPP) {
605 reason = "port busy but CLO unavailable";
608 reason = "port busy but CLO failed";
614 ahci_start_engine(ap);
616 ata_tf_init(ap->device, &tf);
619 /* issue the first D2H Register FIS */
620 ahci_fill_cmd_slot(pp, 0,
621 cmd_fis_len | AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY);
624 ata_tf_to_fis(&tf, fis, 0);
625 fis[1] &= ~(1 << 7); /* turn off Command FIS bit */
627 writel(1, port_mmio + PORT_CMD_ISSUE);
629 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1, 1, 500);
632 reason = "1st FIS failed";
636 /* spec says at least 5us, but be generous and sleep for 1ms */
639 /* issue the second D2H Register FIS */
640 ahci_fill_cmd_slot(pp, 0, cmd_fis_len);
643 ata_tf_to_fis(&tf, fis, 0);
644 fis[1] &= ~(1 << 7); /* turn off Command FIS bit */
646 writel(1, port_mmio + PORT_CMD_ISSUE);
647 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
649 /* spec mandates ">= 2ms" before checking status.
650 * We wait 150ms, because that was the magic delay used for
651 * ATAPI devices in Hale Landis's ATADRVR, for the period of time
652 * between when the ATA command register is written, and then
653 * status is checked. Because waiting for "a while" before
654 * checking status is fine, post SRST, we perform this magic
655 * delay here as well.
659 *class = ATA_DEV_NONE;
660 if (ata_port_online(ap)) {
661 if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) {
663 reason = "device not ready";
666 *class = ahci_dev_classify(ap);
669 DPRINTK("EXIT, class=%u\n", *class);
673 ahci_start_engine(ap);
675 ata_port_printk(ap, KERN_ERR, "softreset failed (%s)\n", reason);
679 static int ahci_hardreset(struct ata_port *ap, unsigned int *class)
685 ahci_stop_engine(ap);
686 rc = sata_std_hardreset(ap, class);
687 ahci_start_engine(ap);
689 if (rc == 0 && ata_port_online(ap))
690 *class = ahci_dev_classify(ap);
691 if (*class == ATA_DEV_UNKNOWN)
692 *class = ATA_DEV_NONE;
694 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
698 static void ahci_postreset(struct ata_port *ap, unsigned int *class)
700 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
703 ata_std_postreset(ap, class);
705 /* Make sure port's ATAPI bit is set appropriately */
706 new_tmp = tmp = readl(port_mmio + PORT_CMD);
707 if (*class == ATA_DEV_ATAPI)
708 new_tmp |= PORT_CMD_ATAPI;
710 new_tmp &= ~PORT_CMD_ATAPI;
711 if (new_tmp != tmp) {
712 writel(new_tmp, port_mmio + PORT_CMD);
713 readl(port_mmio + PORT_CMD); /* flush */
717 static int ahci_probe_reset(struct ata_port *ap, unsigned int *classes)
719 if ((ap->flags & AHCI_FLAG_RESET_NEEDS_CLO) &&
720 (ata_busy_wait(ap, ATA_BUSY, 1000) & ATA_BUSY)) {
721 /* ATA_BUSY hasn't cleared, so send a CLO */
725 return ata_drive_probe_reset(ap, ata_std_probeinit,
726 ahci_softreset, ahci_hardreset,
727 ahci_postreset, classes);
730 static u8 ahci_check_status(struct ata_port *ap)
732 void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr;
734 return readl(mmio + PORT_TFDATA) & 0xFF;
737 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
739 struct ahci_port_priv *pp = ap->private_data;
740 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
742 ata_tf_from_fis(d2h_fis, tf);
745 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
747 struct scatterlist *sg;
748 struct ahci_sg *ahci_sg;
749 unsigned int n_sg = 0;
754 * Next, the S/G list.
756 ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
757 ata_for_each_sg(sg, qc) {
758 dma_addr_t addr = sg_dma_address(sg);
759 u32 sg_len = sg_dma_len(sg);
761 ahci_sg->addr = cpu_to_le32(addr & 0xffffffff);
762 ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
763 ahci_sg->flags_size = cpu_to_le32(sg_len - 1);
772 static void ahci_qc_prep(struct ata_queued_cmd *qc)
774 struct ata_port *ap = qc->ap;
775 struct ahci_port_priv *pp = ap->private_data;
776 int is_atapi = is_atapi_taskfile(&qc->tf);
779 const u32 cmd_fis_len = 5; /* five dwords */
783 * Fill in command table information. First, the header,
784 * a SATA Register - Host to Device command FIS.
786 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
788 ata_tf_to_fis(&qc->tf, cmd_tbl, 0);
790 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
791 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
795 if (qc->flags & ATA_QCFLAG_DMAMAP)
796 n_elem = ahci_fill_sg(qc, cmd_tbl);
799 * Fill in command slot information.
801 opts = cmd_fis_len | n_elem << 16;
802 if (qc->tf.flags & ATA_TFLAG_WRITE)
803 opts |= AHCI_CMD_WRITE;
805 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
807 ahci_fill_cmd_slot(pp, qc->tag, opts);
810 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
812 struct ahci_port_priv *pp = ap->private_data;
813 struct ata_eh_info *ehi = &ap->eh_info;
814 unsigned int err_mask = 0, action = 0;
815 struct ata_queued_cmd *qc;
818 ata_ehi_clear_desc(ehi);
820 /* AHCI needs SError cleared; otherwise, it might lock up */
821 serror = ahci_scr_read(ap, SCR_ERROR);
822 ahci_scr_write(ap, SCR_ERROR, serror);
824 /* analyze @irq_stat */
825 ata_ehi_push_desc(ehi, "irq_stat 0x%08x", irq_stat);
827 if (irq_stat & PORT_IRQ_TF_ERR)
828 err_mask |= AC_ERR_DEV;
830 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
831 err_mask |= AC_ERR_HOST_BUS;
832 action |= ATA_EH_SOFTRESET;
835 if (irq_stat & PORT_IRQ_IF_ERR) {
836 err_mask |= AC_ERR_ATA_BUS;
837 action |= ATA_EH_SOFTRESET;
838 ata_ehi_push_desc(ehi, ", interface fatal error");
841 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
842 err_mask |= AC_ERR_ATA_BUS;
843 action |= ATA_EH_SOFTRESET;
844 ata_ehi_push_desc(ehi, ", %s", irq_stat & PORT_IRQ_CONNECT ?
845 "connection status changed" : "PHY RDY changed");
848 if (irq_stat & PORT_IRQ_UNK_FIS) {
849 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
851 err_mask |= AC_ERR_HSM;
852 action |= ATA_EH_SOFTRESET;
853 ata_ehi_push_desc(ehi, ", unknown FIS %08x %08x %08x %08x",
854 unk[0], unk[1], unk[2], unk[3]);
857 /* okay, let's hand over to EH */
858 ehi->serror |= serror;
859 ehi->action |= action;
861 qc = ata_qc_from_tag(ap, ap->active_tag);
863 qc->err_mask |= err_mask;
865 ehi->err_mask |= err_mask;
867 if (irq_stat & PORT_IRQ_FREEZE)
873 static void ahci_host_intr(struct ata_port *ap)
875 void __iomem *mmio = ap->host_set->mmio_base;
876 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
877 struct ata_eh_info *ehi = &ap->eh_info;
878 u32 status, qc_active;
881 status = readl(port_mmio + PORT_IRQ_STAT);
882 writel(status, port_mmio + PORT_IRQ_STAT);
884 if (unlikely(status & PORT_IRQ_ERROR)) {
885 ahci_error_intr(ap, status);
890 qc_active = readl(port_mmio + PORT_SCR_ACT);
892 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
894 rc = ata_qc_complete_multiple(ap, qc_active, NULL);
898 ehi->err_mask |= AC_ERR_HSM;
899 ehi->action |= ATA_EH_SOFTRESET;
904 /* hmmm... a spurious interupt */
906 /* some devices send D2H reg with I bit set during NCQ command phase */
907 if (ap->sactive && status & PORT_IRQ_D2H_REG_FIS)
910 /* ignore interim PIO setup fis interrupts */
911 if (ata_tag_valid(ap->active_tag)) {
912 struct ata_queued_cmd *qc =
913 ata_qc_from_tag(ap, ap->active_tag);
915 if (qc && qc->tf.protocol == ATA_PROT_PIO &&
916 (status & PORT_IRQ_PIOS_FIS))
921 ata_port_printk(ap, KERN_INFO, "spurious interrupt "
922 "(irq_stat 0x%x active_tag %d sactive 0x%x)\n",
923 status, ap->active_tag, ap->sactive);
926 static void ahci_irq_clear(struct ata_port *ap)
931 static irqreturn_t ahci_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
933 struct ata_host_set *host_set = dev_instance;
934 struct ahci_host_priv *hpriv;
935 unsigned int i, handled = 0;
937 u32 irq_stat, irq_ack = 0;
941 hpriv = host_set->private_data;
942 mmio = host_set->mmio_base;
944 /* sigh. 0xffffffff is a valid return from h/w */
945 irq_stat = readl(mmio + HOST_IRQ_STAT);
946 irq_stat &= hpriv->port_map;
950 spin_lock(&host_set->lock);
952 for (i = 0; i < host_set->n_ports; i++) {
955 if (!(irq_stat & (1 << i)))
958 ap = host_set->ports[i];
961 VPRINTK("port %u\n", i);
963 VPRINTK("port %u (no irq)\n", i);
965 dev_printk(KERN_WARNING, host_set->dev,
966 "interrupt on disabled port %u\n", i);
973 writel(irq_ack, mmio + HOST_IRQ_STAT);
977 spin_unlock(&host_set->lock);
981 return IRQ_RETVAL(handled);
984 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
986 struct ata_port *ap = qc->ap;
987 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
989 if (qc->tf.protocol == ATA_PROT_NCQ)
990 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
991 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
992 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
997 static void ahci_freeze(struct ata_port *ap)
999 void __iomem *mmio = ap->host_set->mmio_base;
1000 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
1003 writel(0, port_mmio + PORT_IRQ_MASK);
1006 static void ahci_thaw(struct ata_port *ap)
1008 void __iomem *mmio = ap->host_set->mmio_base;
1009 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
1013 tmp = readl(port_mmio + PORT_IRQ_STAT);
1014 writel(tmp, port_mmio + PORT_IRQ_STAT);
1015 writel(1 << ap->id, mmio + HOST_IRQ_STAT);
1017 /* turn IRQ back on */
1018 writel(DEF_PORT_IRQ, port_mmio + PORT_IRQ_MASK);
1021 static void ahci_error_handler(struct ata_port *ap)
1023 if (!(ap->flags & ATA_FLAG_FROZEN)) {
1024 /* restart engine */
1025 ahci_stop_engine(ap);
1026 ahci_start_engine(ap);
1029 /* perform recovery */
1030 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_hardreset,
1034 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
1036 struct ata_port *ap = qc->ap;
1038 if (qc->flags & ATA_QCFLAG_FAILED)
1039 qc->err_mask |= AC_ERR_OTHER;
1042 /* make DMA engine forget about the failed command */
1043 ahci_stop_engine(ap);
1044 ahci_start_engine(ap);
1048 static void ahci_setup_port(struct ata_ioports *port, unsigned long base,
1049 unsigned int port_idx)
1051 VPRINTK("ENTER, base==0x%lx, port_idx %u\n", base, port_idx);
1052 base = ahci_port_base_ul(base, port_idx);
1053 VPRINTK("base now==0x%lx\n", base);
1055 port->cmd_addr = base;
1056 port->scr_addr = base + PORT_SCR;
1061 static int ahci_host_init(struct ata_probe_ent *probe_ent)
1063 struct ahci_host_priv *hpriv = probe_ent->private_data;
1064 struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
1065 void __iomem *mmio = probe_ent->mmio_base;
1067 unsigned int i, j, using_dac;
1069 void __iomem *port_mmio;
1071 cap_save = readl(mmio + HOST_CAP);
1072 cap_save &= ( (1<<28) | (1<<17) );
1073 cap_save |= (1 << 27);
1075 /* global controller reset */
1076 tmp = readl(mmio + HOST_CTL);
1077 if ((tmp & HOST_RESET) == 0) {
1078 writel(tmp | HOST_RESET, mmio + HOST_CTL);
1079 readl(mmio + HOST_CTL); /* flush */
1082 /* reset must complete within 1 second, or
1083 * the hardware should be considered fried.
1087 tmp = readl(mmio + HOST_CTL);
1088 if (tmp & HOST_RESET) {
1089 dev_printk(KERN_ERR, &pdev->dev,
1090 "controller reset failed (0x%x)\n", tmp);
1094 writel(HOST_AHCI_EN, mmio + HOST_CTL);
1095 (void) readl(mmio + HOST_CTL); /* flush */
1096 writel(cap_save, mmio + HOST_CAP);
1097 writel(0xf, mmio + HOST_PORTS_IMPL);
1098 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
1100 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
1103 pci_read_config_word(pdev, 0x92, &tmp16);
1105 pci_write_config_word(pdev, 0x92, tmp16);
1108 hpriv->cap = readl(mmio + HOST_CAP);
1109 hpriv->port_map = readl(mmio + HOST_PORTS_IMPL);
1110 probe_ent->n_ports = (hpriv->cap & 0x1f) + 1;
1112 VPRINTK("cap 0x%x port_map 0x%x n_ports %d\n",
1113 hpriv->cap, hpriv->port_map, probe_ent->n_ports);
1115 using_dac = hpriv->cap & HOST_CAP_64;
1117 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1118 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
1120 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1122 dev_printk(KERN_ERR, &pdev->dev,
1123 "64-bit DMA enable failed\n");
1128 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1130 dev_printk(KERN_ERR, &pdev->dev,
1131 "32-bit DMA enable failed\n");
1134 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1136 dev_printk(KERN_ERR, &pdev->dev,
1137 "32-bit consistent DMA enable failed\n");
1142 for (i = 0; i < probe_ent->n_ports; i++) {
1143 #if 0 /* BIOSen initialize this incorrectly */
1144 if (!(hpriv->port_map & (1 << i)))
1148 port_mmio = ahci_port_base(mmio, i);
1149 VPRINTK("mmio %p port_mmio %p\n", mmio, port_mmio);
1151 ahci_setup_port(&probe_ent->port[i],
1152 (unsigned long) mmio, i);
1154 /* make sure port is not active */
1155 tmp = readl(port_mmio + PORT_CMD);
1156 VPRINTK("PORT_CMD 0x%x\n", tmp);
1157 if (tmp & (PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
1158 PORT_CMD_FIS_RX | PORT_CMD_START)) {
1159 tmp &= ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
1160 PORT_CMD_FIS_RX | PORT_CMD_START);
1161 writel(tmp, port_mmio + PORT_CMD);
1162 readl(port_mmio + PORT_CMD); /* flush */
1164 /* spec says 500 msecs for each bit, so
1165 * this is slightly incorrect.
1170 writel(PORT_CMD_SPIN_UP, port_mmio + PORT_CMD);
1175 tmp = readl(port_mmio + PORT_SCR_STAT);
1176 if ((tmp & 0xf) == 0x3)
1181 tmp = readl(port_mmio + PORT_SCR_ERR);
1182 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
1183 writel(tmp, port_mmio + PORT_SCR_ERR);
1185 /* ack any pending irq events for this port */
1186 tmp = readl(port_mmio + PORT_IRQ_STAT);
1187 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1189 writel(tmp, port_mmio + PORT_IRQ_STAT);
1191 writel(1 << i, mmio + HOST_IRQ_STAT);
1194 tmp = readl(mmio + HOST_CTL);
1195 VPRINTK("HOST_CTL 0x%x\n", tmp);
1196 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
1197 tmp = readl(mmio + HOST_CTL);
1198 VPRINTK("HOST_CTL 0x%x\n", tmp);
1200 pci_set_master(pdev);
1205 static void ahci_print_info(struct ata_probe_ent *probe_ent)
1207 struct ahci_host_priv *hpriv = probe_ent->private_data;
1208 struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
1209 void __iomem *mmio = probe_ent->mmio_base;
1210 u32 vers, cap, impl, speed;
1211 const char *speed_s;
1215 vers = readl(mmio + HOST_VERSION);
1217 impl = hpriv->port_map;
1219 speed = (cap >> 20) & 0xf;
1222 else if (speed == 2)
1227 pci_read_config_word(pdev, 0x0a, &cc);
1230 else if (cc == 0x0106)
1232 else if (cc == 0x0104)
1237 dev_printk(KERN_INFO, &pdev->dev,
1238 "AHCI %02x%02x.%02x%02x "
1239 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
1242 (vers >> 24) & 0xff,
1243 (vers >> 16) & 0xff,
1247 ((cap >> 8) & 0x1f) + 1,
1253 dev_printk(KERN_INFO, &pdev->dev,
1259 cap & (1 << 31) ? "64bit " : "",
1260 cap & (1 << 30) ? "ncq " : "",
1261 cap & (1 << 28) ? "ilck " : "",
1262 cap & (1 << 27) ? "stag " : "",
1263 cap & (1 << 26) ? "pm " : "",
1264 cap & (1 << 25) ? "led " : "",
1266 cap & (1 << 24) ? "clo " : "",
1267 cap & (1 << 19) ? "nz " : "",
1268 cap & (1 << 18) ? "only " : "",
1269 cap & (1 << 17) ? "pmp " : "",
1270 cap & (1 << 15) ? "pio " : "",
1271 cap & (1 << 14) ? "slum " : "",
1272 cap & (1 << 13) ? "part " : ""
1276 static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1278 static int printed_version;
1279 struct ata_probe_ent *probe_ent = NULL;
1280 struct ahci_host_priv *hpriv;
1282 void __iomem *mmio_base;
1283 unsigned int board_idx = (unsigned int) ent->driver_data;
1284 int have_msi, pci_dev_busy = 0;
1289 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
1291 if (!printed_version++)
1292 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1294 rc = pci_enable_device(pdev);
1298 rc = pci_request_regions(pdev, DRV_NAME);
1304 if (pci_enable_msi(pdev) == 0)
1311 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
1312 if (probe_ent == NULL) {
1317 memset(probe_ent, 0, sizeof(*probe_ent));
1318 probe_ent->dev = pci_dev_to_dev(pdev);
1319 INIT_LIST_HEAD(&probe_ent->node);
1321 mmio_base = pci_iomap(pdev, AHCI_PCI_BAR, 0);
1322 if (mmio_base == NULL) {
1324 goto err_out_free_ent;
1326 base = (unsigned long) mmio_base;
1328 hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL);
1331 goto err_out_iounmap;
1333 memset(hpriv, 0, sizeof(*hpriv));
1335 probe_ent->sht = ahci_port_info[board_idx].sht;
1336 probe_ent->host_flags = ahci_port_info[board_idx].host_flags;
1337 probe_ent->pio_mask = ahci_port_info[board_idx].pio_mask;
1338 probe_ent->udma_mask = ahci_port_info[board_idx].udma_mask;
1339 probe_ent->port_ops = ahci_port_info[board_idx].port_ops;
1341 probe_ent->irq = pdev->irq;
1342 probe_ent->irq_flags = SA_SHIRQ;
1343 probe_ent->mmio_base = mmio_base;
1344 probe_ent->private_data = hpriv;
1347 hpriv->flags |= AHCI_FLAG_MSI;
1349 /* JMicron-specific fixup: make sure we're in AHCI mode */
1350 if (pdev->vendor == 0x197b)
1351 pci_write_config_byte(pdev, 0x41, 0xa1);
1353 /* initialize adapter */
1354 rc = ahci_host_init(probe_ent);
1358 if (hpriv->cap & HOST_CAP_NCQ)
1359 probe_ent->host_flags |= ATA_FLAG_NCQ;
1361 ahci_print_info(probe_ent);
1363 /* FIXME: check ata_device_add return value */
1364 ata_device_add(probe_ent);
1372 pci_iounmap(pdev, mmio_base);
1377 pci_disable_msi(pdev);
1380 pci_release_regions(pdev);
1383 pci_disable_device(pdev);
1387 static void ahci_remove_one (struct pci_dev *pdev)
1389 struct device *dev = pci_dev_to_dev(pdev);
1390 struct ata_host_set *host_set = dev_get_drvdata(dev);
1391 struct ahci_host_priv *hpriv = host_set->private_data;
1395 for (i = 0; i < host_set->n_ports; i++)
1396 ata_port_detach(host_set->ports[i]);
1398 have_msi = hpriv->flags & AHCI_FLAG_MSI;
1399 free_irq(host_set->irq, host_set);
1401 for (i = 0; i < host_set->n_ports; i++) {
1402 struct ata_port *ap = host_set->ports[i];
1404 ata_scsi_release(ap->host);
1405 scsi_host_put(ap->host);
1409 pci_iounmap(pdev, host_set->mmio_base);
1413 pci_disable_msi(pdev);
1416 pci_release_regions(pdev);
1417 pci_disable_device(pdev);
1418 dev_set_drvdata(dev, NULL);
1421 static int __init ahci_init(void)
1423 return pci_module_init(&ahci_pci_driver);
1426 static void __exit ahci_exit(void)
1428 pci_unregister_driver(&ahci_pci_driver);
1432 MODULE_AUTHOR("Jeff Garzik");
1433 MODULE_DESCRIPTION("AHCI SATA low-level driver");
1434 MODULE_LICENSE("GPL");
1435 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
1436 MODULE_VERSION(DRV_VERSION);
1438 module_init(ahci_init);
1439 module_exit(ahci_exit);