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