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 u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg_in)
380 case SCR_STATUS: sc_reg = 0; break;
381 case SCR_CONTROL: sc_reg = 1; break;
382 case SCR_ERROR: sc_reg = 2; break;
383 case SCR_ACTIVE: sc_reg = 3; break;
388 return readl((void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
392 static void ahci_scr_write (struct ata_port *ap, unsigned int sc_reg_in,
398 case SCR_STATUS: sc_reg = 0; break;
399 case SCR_CONTROL: sc_reg = 1; break;
400 case SCR_ERROR: sc_reg = 2; break;
401 case SCR_ACTIVE: sc_reg = 3; break;
406 writel(val, (void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
409 static int ahci_start_engine(void __iomem *port_mmio)
413 /* get current status */
414 tmp = readl(port_mmio + PORT_CMD);
416 /* AHCI rev 1.1 section 10.3.1:
417 * Software shall not set PxCMD.ST to '1' until it verifies
418 * that PxCMD.CR is '0' and has set PxCMD.FRE to '1'
420 if ((tmp & PORT_CMD_FIS_RX) == 0)
423 /* wait for engine to become idle */
424 tmp = ata_wait_register(port_mmio + PORT_CMD,
425 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1,500);
426 if (tmp & PORT_CMD_LIST_ON)
430 tmp |= PORT_CMD_START;
431 writel(tmp, port_mmio + PORT_CMD);
432 readl(port_mmio + PORT_CMD); /* flush */
437 static int ahci_stop_engine(void __iomem *port_mmio)
441 tmp = readl(port_mmio + PORT_CMD);
443 /* check if the HBA is idle */
444 if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
447 /* setting HBA to idle */
448 tmp &= ~PORT_CMD_START;
449 writel(tmp, port_mmio + PORT_CMD);
451 /* wait for engine to stop. This could be as long as 500 msec */
452 tmp = ata_wait_register(port_mmio + PORT_CMD,
453 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
454 if (tmp & PORT_CMD_LIST_ON)
460 static unsigned int ahci_dev_classify(struct ata_port *ap)
462 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
463 struct ata_taskfile tf;
466 tmp = readl(port_mmio + PORT_SIG);
467 tf.lbah = (tmp >> 24) & 0xff;
468 tf.lbam = (tmp >> 16) & 0xff;
469 tf.lbal = (tmp >> 8) & 0xff;
470 tf.nsect = (tmp) & 0xff;
472 return ata_dev_classify(&tf);
475 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
478 dma_addr_t cmd_tbl_dma;
480 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
482 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
483 pp->cmd_slot[tag].status = 0;
484 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
485 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
488 static int ahci_clo(struct ata_port *ap)
490 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
491 struct ahci_host_priv *hpriv = ap->host_set->private_data;
494 if (!(hpriv->cap & HOST_CAP_CLO))
497 tmp = readl(port_mmio + PORT_CMD);
499 writel(tmp, port_mmio + PORT_CMD);
501 tmp = ata_wait_register(port_mmio + PORT_CMD,
502 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
503 if (tmp & PORT_CMD_CLO)
509 static int ahci_prereset(struct ata_port *ap)
511 if ((ap->flags & AHCI_FLAG_RESET_NEEDS_CLO) &&
512 (ata_busy_wait(ap, ATA_BUSY, 1000) & ATA_BUSY)) {
513 /* ATA_BUSY hasn't cleared, so send a CLO */
517 return ata_std_prereset(ap);
520 static int ahci_softreset(struct ata_port *ap, unsigned int *class)
522 struct ahci_port_priv *pp = ap->private_data;
523 void __iomem *mmio = ap->host_set->mmio_base;
524 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
525 const u32 cmd_fis_len = 5; /* five dwords */
526 const char *reason = NULL;
527 struct ata_taskfile tf;
534 if (ata_port_offline(ap)) {
535 DPRINTK("PHY reports no device\n");
536 *class = ATA_DEV_NONE;
540 /* prepare for SRST (AHCI-1.1 10.4.1) */
541 rc = ahci_stop_engine(port_mmio);
543 reason = "failed to stop engine";
547 /* check BUSY/DRQ, perform Command List Override if necessary */
548 ahci_tf_read(ap, &tf);
549 if (tf.command & (ATA_BUSY | ATA_DRQ)) {
552 if (rc == -EOPNOTSUPP) {
553 reason = "port busy but CLO unavailable";
556 reason = "port busy but CLO failed";
562 ahci_start_engine(port_mmio);
564 ata_tf_init(ap->device, &tf);
567 /* issue the first D2H Register FIS */
568 ahci_fill_cmd_slot(pp, 0,
569 cmd_fis_len | AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY);
572 ata_tf_to_fis(&tf, fis, 0);
573 fis[1] &= ~(1 << 7); /* turn off Command FIS bit */
575 writel(1, port_mmio + PORT_CMD_ISSUE);
577 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1, 1, 500);
580 reason = "1st FIS failed";
584 /* spec says at least 5us, but be generous and sleep for 1ms */
587 /* issue the second D2H Register FIS */
588 ahci_fill_cmd_slot(pp, 0, cmd_fis_len);
591 ata_tf_to_fis(&tf, fis, 0);
592 fis[1] &= ~(1 << 7); /* turn off Command FIS bit */
594 writel(1, port_mmio + PORT_CMD_ISSUE);
595 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
597 /* spec mandates ">= 2ms" before checking status.
598 * We wait 150ms, because that was the magic delay used for
599 * ATAPI devices in Hale Landis's ATADRVR, for the period of time
600 * between when the ATA command register is written, and then
601 * status is checked. Because waiting for "a while" before
602 * checking status is fine, post SRST, we perform this magic
603 * delay here as well.
607 *class = ATA_DEV_NONE;
608 if (ata_port_online(ap)) {
609 if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) {
611 reason = "device not ready";
614 *class = ahci_dev_classify(ap);
617 DPRINTK("EXIT, class=%u\n", *class);
621 ahci_start_engine(port_mmio);
623 ata_port_printk(ap, KERN_ERR, "softreset failed (%s)\n", reason);
627 static int ahci_hardreset(struct ata_port *ap, unsigned int *class)
629 struct ahci_port_priv *pp = ap->private_data;
630 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
631 struct ata_taskfile tf;
632 void __iomem *mmio = ap->host_set->mmio_base;
633 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
638 ahci_stop_engine(port_mmio);
640 /* clear D2H reception area to properly wait for D2H FIS */
641 ata_tf_init(ap->device, &tf);
643 ata_tf_to_fis(&tf, d2h_fis, 0);
645 rc = sata_std_hardreset(ap, class);
647 ahci_start_engine(port_mmio);
649 if (rc == 0 && ata_port_online(ap))
650 *class = ahci_dev_classify(ap);
651 if (*class == ATA_DEV_UNKNOWN)
652 *class = ATA_DEV_NONE;
654 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
658 static void ahci_postreset(struct ata_port *ap, unsigned int *class)
660 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
663 ata_std_postreset(ap, class);
665 /* Make sure port's ATAPI bit is set appropriately */
666 new_tmp = tmp = readl(port_mmio + PORT_CMD);
667 if (*class == ATA_DEV_ATAPI)
668 new_tmp |= PORT_CMD_ATAPI;
670 new_tmp &= ~PORT_CMD_ATAPI;
671 if (new_tmp != tmp) {
672 writel(new_tmp, port_mmio + PORT_CMD);
673 readl(port_mmio + PORT_CMD); /* flush */
677 static u8 ahci_check_status(struct ata_port *ap)
679 void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr;
681 return readl(mmio + PORT_TFDATA) & 0xFF;
684 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
686 struct ahci_port_priv *pp = ap->private_data;
687 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
689 ata_tf_from_fis(d2h_fis, tf);
692 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
694 struct scatterlist *sg;
695 struct ahci_sg *ahci_sg;
696 unsigned int n_sg = 0;
701 * Next, the S/G list.
703 ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
704 ata_for_each_sg(sg, qc) {
705 dma_addr_t addr = sg_dma_address(sg);
706 u32 sg_len = sg_dma_len(sg);
708 ahci_sg->addr = cpu_to_le32(addr & 0xffffffff);
709 ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
710 ahci_sg->flags_size = cpu_to_le32(sg_len - 1);
719 static void ahci_qc_prep(struct ata_queued_cmd *qc)
721 struct ata_port *ap = qc->ap;
722 struct ahci_port_priv *pp = ap->private_data;
723 int is_atapi = is_atapi_taskfile(&qc->tf);
726 const u32 cmd_fis_len = 5; /* five dwords */
730 * Fill in command table information. First, the header,
731 * a SATA Register - Host to Device command FIS.
733 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
735 ata_tf_to_fis(&qc->tf, cmd_tbl, 0);
737 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
738 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
742 if (qc->flags & ATA_QCFLAG_DMAMAP)
743 n_elem = ahci_fill_sg(qc, cmd_tbl);
746 * Fill in command slot information.
748 opts = cmd_fis_len | n_elem << 16;
749 if (qc->tf.flags & ATA_TFLAG_WRITE)
750 opts |= AHCI_CMD_WRITE;
752 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
754 ahci_fill_cmd_slot(pp, qc->tag, opts);
757 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
759 struct ahci_port_priv *pp = ap->private_data;
760 struct ata_eh_info *ehi = &ap->eh_info;
761 unsigned int err_mask = 0, action = 0;
762 struct ata_queued_cmd *qc;
765 ata_ehi_clear_desc(ehi);
767 /* AHCI needs SError cleared; otherwise, it might lock up */
768 serror = ahci_scr_read(ap, SCR_ERROR);
769 ahci_scr_write(ap, SCR_ERROR, serror);
771 /* analyze @irq_stat */
772 ata_ehi_push_desc(ehi, "irq_stat 0x%08x", irq_stat);
774 if (irq_stat & PORT_IRQ_TF_ERR)
775 err_mask |= AC_ERR_DEV;
777 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
778 err_mask |= AC_ERR_HOST_BUS;
779 action |= ATA_EH_SOFTRESET;
782 if (irq_stat & PORT_IRQ_IF_ERR) {
783 err_mask |= AC_ERR_ATA_BUS;
784 action |= ATA_EH_SOFTRESET;
785 ata_ehi_push_desc(ehi, ", interface fatal error");
788 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
789 ata_ehi_hotplugged(ehi);
790 ata_ehi_push_desc(ehi, ", %s", irq_stat & PORT_IRQ_CONNECT ?
791 "connection status changed" : "PHY RDY changed");
794 if (irq_stat & PORT_IRQ_UNK_FIS) {
795 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
797 err_mask |= AC_ERR_HSM;
798 action |= ATA_EH_SOFTRESET;
799 ata_ehi_push_desc(ehi, ", unknown FIS %08x %08x %08x %08x",
800 unk[0], unk[1], unk[2], unk[3]);
803 /* okay, let's hand over to EH */
804 ehi->serror |= serror;
805 ehi->action |= action;
807 qc = ata_qc_from_tag(ap, ap->active_tag);
809 qc->err_mask |= err_mask;
811 ehi->err_mask |= err_mask;
813 if (irq_stat & PORT_IRQ_FREEZE)
819 static void ahci_host_intr(struct ata_port *ap)
821 void __iomem *mmio = ap->host_set->mmio_base;
822 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
823 struct ata_eh_info *ehi = &ap->eh_info;
824 u32 status, qc_active;
827 status = readl(port_mmio + PORT_IRQ_STAT);
828 writel(status, port_mmio + PORT_IRQ_STAT);
830 if (unlikely(status & PORT_IRQ_ERROR)) {
831 ahci_error_intr(ap, status);
836 qc_active = readl(port_mmio + PORT_SCR_ACT);
838 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
840 rc = ata_qc_complete_multiple(ap, qc_active, NULL);
844 ehi->err_mask |= AC_ERR_HSM;
845 ehi->action |= ATA_EH_SOFTRESET;
850 /* hmmm... a spurious interupt */
852 /* some devices send D2H reg with I bit set during NCQ command phase */
853 if (ap->sactive && status & PORT_IRQ_D2H_REG_FIS)
856 /* ignore interim PIO setup fis interrupts */
857 if (ata_tag_valid(ap->active_tag)) {
858 struct ata_queued_cmd *qc =
859 ata_qc_from_tag(ap, ap->active_tag);
861 if (qc && qc->tf.protocol == ATA_PROT_PIO &&
862 (status & PORT_IRQ_PIOS_FIS))
867 ata_port_printk(ap, KERN_INFO, "spurious interrupt "
868 "(irq_stat 0x%x active_tag %d sactive 0x%x)\n",
869 status, ap->active_tag, ap->sactive);
872 static void ahci_irq_clear(struct ata_port *ap)
877 static irqreturn_t ahci_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
879 struct ata_host_set *host_set = dev_instance;
880 struct ahci_host_priv *hpriv;
881 unsigned int i, handled = 0;
883 u32 irq_stat, irq_ack = 0;
887 hpriv = host_set->private_data;
888 mmio = host_set->mmio_base;
890 /* sigh. 0xffffffff is a valid return from h/w */
891 irq_stat = readl(mmio + HOST_IRQ_STAT);
892 irq_stat &= hpriv->port_map;
896 spin_lock(&host_set->lock);
898 for (i = 0; i < host_set->n_ports; i++) {
901 if (!(irq_stat & (1 << i)))
904 ap = host_set->ports[i];
907 VPRINTK("port %u\n", i);
909 VPRINTK("port %u (no irq)\n", i);
911 dev_printk(KERN_WARNING, host_set->dev,
912 "interrupt on disabled port %u\n", i);
919 writel(irq_ack, mmio + HOST_IRQ_STAT);
923 spin_unlock(&host_set->lock);
927 return IRQ_RETVAL(handled);
930 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
932 struct ata_port *ap = qc->ap;
933 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
935 if (qc->tf.protocol == ATA_PROT_NCQ)
936 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
937 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
938 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
943 static void ahci_freeze(struct ata_port *ap)
945 void __iomem *mmio = ap->host_set->mmio_base;
946 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
949 writel(0, port_mmio + PORT_IRQ_MASK);
952 static void ahci_thaw(struct ata_port *ap)
954 void __iomem *mmio = ap->host_set->mmio_base;
955 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
959 tmp = readl(port_mmio + PORT_IRQ_STAT);
960 writel(tmp, port_mmio + PORT_IRQ_STAT);
961 writel(1 << ap->id, mmio + HOST_IRQ_STAT);
963 /* turn IRQ back on */
964 writel(DEF_PORT_IRQ, port_mmio + PORT_IRQ_MASK);
967 static void ahci_error_handler(struct ata_port *ap)
969 void __iomem *mmio = ap->host_set->mmio_base;
970 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
972 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
974 ahci_stop_engine(port_mmio);
975 ahci_start_engine(port_mmio);
978 /* perform recovery */
979 ata_do_eh(ap, ahci_prereset, ahci_softreset, ahci_hardreset,
983 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
985 struct ata_port *ap = qc->ap;
986 void __iomem *mmio = ap->host_set->mmio_base;
987 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
989 if (qc->flags & ATA_QCFLAG_FAILED)
990 qc->err_mask |= AC_ERR_OTHER;
993 /* make DMA engine forget about the failed command */
994 ahci_stop_engine(port_mmio);
995 ahci_start_engine(port_mmio);
999 static int ahci_port_start(struct ata_port *ap)
1001 struct device *dev = ap->host_set->dev;
1002 struct ahci_host_priv *hpriv = ap->host_set->private_data;
1003 struct ahci_port_priv *pp;
1004 void __iomem *mmio = ap->host_set->mmio_base;
1005 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
1010 pp = kmalloc(sizeof(*pp), GFP_KERNEL);
1013 memset(pp, 0, sizeof(*pp));
1015 rc = ata_pad_alloc(ap, dev);
1021 mem = dma_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma, GFP_KERNEL);
1023 ata_pad_free(ap, dev);
1027 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
1030 * First item in chunk of DMA memory: 32-slot command table,
1031 * 32 bytes each in size
1034 pp->cmd_slot_dma = mem_dma;
1036 mem += AHCI_CMD_SLOT_SZ;
1037 mem_dma += AHCI_CMD_SLOT_SZ;
1040 * Second item: Received-FIS area
1043 pp->rx_fis_dma = mem_dma;
1045 mem += AHCI_RX_FIS_SZ;
1046 mem_dma += AHCI_RX_FIS_SZ;
1049 * Third item: data area for storing a single command
1050 * and its scatter-gather table
1053 pp->cmd_tbl_dma = mem_dma;
1055 ap->private_data = pp;
1057 if (hpriv->cap & HOST_CAP_64)
1058 writel((pp->cmd_slot_dma >> 16) >> 16, port_mmio + PORT_LST_ADDR_HI);
1059 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
1060 readl(port_mmio + PORT_LST_ADDR); /* flush */
1062 if (hpriv->cap & HOST_CAP_64)
1063 writel((pp->rx_fis_dma >> 16) >> 16, port_mmio + PORT_FIS_ADDR_HI);
1064 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
1065 readl(port_mmio + PORT_FIS_ADDR); /* flush */
1067 writel(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX |
1068 PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP |
1069 PORT_CMD_START, port_mmio + PORT_CMD);
1070 readl(port_mmio + PORT_CMD); /* flush */
1075 static void ahci_port_stop(struct ata_port *ap)
1077 struct device *dev = ap->host_set->dev;
1078 struct ahci_port_priv *pp = ap->private_data;
1079 void __iomem *mmio = ap->host_set->mmio_base;
1080 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
1083 tmp = readl(port_mmio + PORT_CMD);
1084 tmp &= ~(PORT_CMD_START | PORT_CMD_FIS_RX);
1085 writel(tmp, port_mmio + PORT_CMD);
1086 readl(port_mmio + PORT_CMD); /* flush */
1088 /* spec says 500 msecs for each PORT_CMD_{START,FIS_RX} bit, so
1089 * this is slightly incorrect.
1093 ap->private_data = NULL;
1094 dma_free_coherent(dev, AHCI_PORT_PRIV_DMA_SZ,
1095 pp->cmd_slot, pp->cmd_slot_dma);
1096 ata_pad_free(ap, dev);
1100 static void ahci_setup_port(struct ata_ioports *port, unsigned long base,
1101 unsigned int port_idx)
1103 VPRINTK("ENTER, base==0x%lx, port_idx %u\n", base, port_idx);
1104 base = ahci_port_base_ul(base, port_idx);
1105 VPRINTK("base now==0x%lx\n", base);
1107 port->cmd_addr = base;
1108 port->scr_addr = base + PORT_SCR;
1113 static int ahci_host_init(struct ata_probe_ent *probe_ent)
1115 struct ahci_host_priv *hpriv = probe_ent->private_data;
1116 struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
1117 void __iomem *mmio = probe_ent->mmio_base;
1119 unsigned int i, j, using_dac;
1121 void __iomem *port_mmio;
1123 cap_save = readl(mmio + HOST_CAP);
1124 cap_save &= ( (1<<28) | (1<<17) );
1125 cap_save |= (1 << 27);
1127 /* global controller reset */
1128 tmp = readl(mmio + HOST_CTL);
1129 if ((tmp & HOST_RESET) == 0) {
1130 writel(tmp | HOST_RESET, mmio + HOST_CTL);
1131 readl(mmio + HOST_CTL); /* flush */
1134 /* reset must complete within 1 second, or
1135 * the hardware should be considered fried.
1139 tmp = readl(mmio + HOST_CTL);
1140 if (tmp & HOST_RESET) {
1141 dev_printk(KERN_ERR, &pdev->dev,
1142 "controller reset failed (0x%x)\n", tmp);
1146 writel(HOST_AHCI_EN, mmio + HOST_CTL);
1147 (void) readl(mmio + HOST_CTL); /* flush */
1148 writel(cap_save, mmio + HOST_CAP);
1149 writel(0xf, mmio + HOST_PORTS_IMPL);
1150 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
1152 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
1155 pci_read_config_word(pdev, 0x92, &tmp16);
1157 pci_write_config_word(pdev, 0x92, tmp16);
1160 hpriv->cap = readl(mmio + HOST_CAP);
1161 hpriv->port_map = readl(mmio + HOST_PORTS_IMPL);
1162 probe_ent->n_ports = (hpriv->cap & 0x1f) + 1;
1164 VPRINTK("cap 0x%x port_map 0x%x n_ports %d\n",
1165 hpriv->cap, hpriv->port_map, probe_ent->n_ports);
1167 using_dac = hpriv->cap & HOST_CAP_64;
1169 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1170 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
1172 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1174 dev_printk(KERN_ERR, &pdev->dev,
1175 "64-bit DMA enable failed\n");
1180 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1182 dev_printk(KERN_ERR, &pdev->dev,
1183 "32-bit DMA enable failed\n");
1186 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1188 dev_printk(KERN_ERR, &pdev->dev,
1189 "32-bit consistent DMA enable failed\n");
1194 for (i = 0; i < probe_ent->n_ports; i++) {
1195 #if 0 /* BIOSen initialize this incorrectly */
1196 if (!(hpriv->port_map & (1 << i)))
1200 port_mmio = ahci_port_base(mmio, i);
1201 VPRINTK("mmio %p port_mmio %p\n", mmio, port_mmio);
1203 ahci_setup_port(&probe_ent->port[i],
1204 (unsigned long) mmio, i);
1206 /* make sure port is not active */
1207 tmp = readl(port_mmio + PORT_CMD);
1208 VPRINTK("PORT_CMD 0x%x\n", tmp);
1209 if (tmp & (PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
1210 PORT_CMD_FIS_RX | PORT_CMD_START)) {
1211 tmp &= ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
1212 PORT_CMD_FIS_RX | PORT_CMD_START);
1213 writel(tmp, port_mmio + PORT_CMD);
1214 readl(port_mmio + PORT_CMD); /* flush */
1216 /* spec says 500 msecs for each bit, so
1217 * this is slightly incorrect.
1222 writel(PORT_CMD_SPIN_UP, port_mmio + PORT_CMD);
1227 tmp = readl(port_mmio + PORT_SCR_STAT);
1228 if ((tmp & 0xf) == 0x3)
1233 tmp = readl(port_mmio + PORT_SCR_ERR);
1234 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
1235 writel(tmp, port_mmio + PORT_SCR_ERR);
1237 /* ack any pending irq events for this port */
1238 tmp = readl(port_mmio + PORT_IRQ_STAT);
1239 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1241 writel(tmp, port_mmio + PORT_IRQ_STAT);
1243 writel(1 << i, mmio + HOST_IRQ_STAT);
1246 tmp = readl(mmio + HOST_CTL);
1247 VPRINTK("HOST_CTL 0x%x\n", tmp);
1248 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
1249 tmp = readl(mmio + HOST_CTL);
1250 VPRINTK("HOST_CTL 0x%x\n", tmp);
1252 pci_set_master(pdev);
1257 static void ahci_print_info(struct ata_probe_ent *probe_ent)
1259 struct ahci_host_priv *hpriv = probe_ent->private_data;
1260 struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
1261 void __iomem *mmio = probe_ent->mmio_base;
1262 u32 vers, cap, impl, speed;
1263 const char *speed_s;
1267 vers = readl(mmio + HOST_VERSION);
1269 impl = hpriv->port_map;
1271 speed = (cap >> 20) & 0xf;
1274 else if (speed == 2)
1279 pci_read_config_word(pdev, 0x0a, &cc);
1282 else if (cc == 0x0106)
1284 else if (cc == 0x0104)
1289 dev_printk(KERN_INFO, &pdev->dev,
1290 "AHCI %02x%02x.%02x%02x "
1291 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
1294 (vers >> 24) & 0xff,
1295 (vers >> 16) & 0xff,
1299 ((cap >> 8) & 0x1f) + 1,
1305 dev_printk(KERN_INFO, &pdev->dev,
1311 cap & (1 << 31) ? "64bit " : "",
1312 cap & (1 << 30) ? "ncq " : "",
1313 cap & (1 << 28) ? "ilck " : "",
1314 cap & (1 << 27) ? "stag " : "",
1315 cap & (1 << 26) ? "pm " : "",
1316 cap & (1 << 25) ? "led " : "",
1318 cap & (1 << 24) ? "clo " : "",
1319 cap & (1 << 19) ? "nz " : "",
1320 cap & (1 << 18) ? "only " : "",
1321 cap & (1 << 17) ? "pmp " : "",
1322 cap & (1 << 15) ? "pio " : "",
1323 cap & (1 << 14) ? "slum " : "",
1324 cap & (1 << 13) ? "part " : ""
1328 static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1330 static int printed_version;
1331 struct ata_probe_ent *probe_ent = NULL;
1332 struct ahci_host_priv *hpriv;
1334 void __iomem *mmio_base;
1335 unsigned int board_idx = (unsigned int) ent->driver_data;
1336 int have_msi, pci_dev_busy = 0;
1341 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
1343 if (!printed_version++)
1344 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1346 /* JMicron-specific fixup: make sure we're in AHCI mode */
1347 /* This is protected from races with ata_jmicron by the pci probe
1349 if (pdev->vendor == PCI_VENDOR_ID_JMICRON) {
1350 /* AHCI enable, AHCI on function 0 */
1351 pci_write_config_byte(pdev, 0x41, 0xa1);
1352 /* Function 1 is the PATA controller */
1353 if (PCI_FUNC(pdev->devfn))
1357 rc = pci_enable_device(pdev);
1361 rc = pci_request_regions(pdev, DRV_NAME);
1367 if (pci_enable_msi(pdev) == 0)
1374 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
1375 if (probe_ent == NULL) {
1380 memset(probe_ent, 0, sizeof(*probe_ent));
1381 probe_ent->dev = pci_dev_to_dev(pdev);
1382 INIT_LIST_HEAD(&probe_ent->node);
1384 mmio_base = pci_iomap(pdev, AHCI_PCI_BAR, 0);
1385 if (mmio_base == NULL) {
1387 goto err_out_free_ent;
1389 base = (unsigned long) mmio_base;
1391 hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL);
1394 goto err_out_iounmap;
1396 memset(hpriv, 0, sizeof(*hpriv));
1398 probe_ent->sht = ahci_port_info[board_idx].sht;
1399 probe_ent->host_flags = ahci_port_info[board_idx].host_flags;
1400 probe_ent->pio_mask = ahci_port_info[board_idx].pio_mask;
1401 probe_ent->udma_mask = ahci_port_info[board_idx].udma_mask;
1402 probe_ent->port_ops = ahci_port_info[board_idx].port_ops;
1404 probe_ent->irq = pdev->irq;
1405 probe_ent->irq_flags = IRQF_SHARED;
1406 probe_ent->mmio_base = mmio_base;
1407 probe_ent->private_data = hpriv;
1410 hpriv->flags |= AHCI_FLAG_MSI;
1412 /* initialize adapter */
1413 rc = ahci_host_init(probe_ent);
1417 if (!(probe_ent->host_flags & AHCI_FLAG_NO_NCQ) &&
1418 (hpriv->cap & HOST_CAP_NCQ))
1419 probe_ent->host_flags |= ATA_FLAG_NCQ;
1421 ahci_print_info(probe_ent);
1423 /* FIXME: check ata_device_add return value */
1424 ata_device_add(probe_ent);
1432 pci_iounmap(pdev, mmio_base);
1437 pci_disable_msi(pdev);
1440 pci_release_regions(pdev);
1443 pci_disable_device(pdev);
1447 static void ahci_remove_one (struct pci_dev *pdev)
1449 struct device *dev = pci_dev_to_dev(pdev);
1450 struct ata_host_set *host_set = dev_get_drvdata(dev);
1451 struct ahci_host_priv *hpriv = host_set->private_data;
1455 for (i = 0; i < host_set->n_ports; i++)
1456 ata_port_detach(host_set->ports[i]);
1458 have_msi = hpriv->flags & AHCI_FLAG_MSI;
1459 free_irq(host_set->irq, host_set);
1461 for (i = 0; i < host_set->n_ports; i++) {
1462 struct ata_port *ap = host_set->ports[i];
1464 ata_scsi_release(ap->host);
1465 scsi_host_put(ap->host);
1469 pci_iounmap(pdev, host_set->mmio_base);
1473 pci_disable_msi(pdev);
1476 pci_release_regions(pdev);
1477 pci_disable_device(pdev);
1478 dev_set_drvdata(dev, NULL);
1481 static int __init ahci_init(void)
1483 return pci_module_init(&ahci_pci_driver);
1486 static void __exit ahci_exit(void)
1488 pci_unregister_driver(&ahci_pci_driver);
1492 MODULE_AUTHOR("Jeff Garzik");
1493 MODULE_DESCRIPTION("AHCI SATA low-level driver");
1494 MODULE_LICENSE("GPL");
1495 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
1496 MODULE_VERSION(DRV_VERSION);
1498 module_init(ahci_init);
1499 module_exit(ahci_exit);