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),
169 struct ahci_cmd_hdr {
184 struct ahci_host_priv {
186 u32 cap; /* cache of HOST_CAP register */
187 u32 port_map; /* cache of HOST_PORTS_IMPL reg */
190 struct ahci_port_priv {
191 struct ahci_cmd_hdr *cmd_slot;
192 dma_addr_t cmd_slot_dma;
194 dma_addr_t cmd_tbl_dma;
196 dma_addr_t rx_fis_dma;
199 static u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg);
200 static void ahci_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
201 static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
202 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
203 static irqreturn_t ahci_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
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 .qc_prep = ahci_qc_prep,
245 .qc_issue = ahci_qc_issue,
247 .irq_handler = ahci_interrupt,
248 .irq_clear = ahci_irq_clear,
250 .scr_read = ahci_scr_read,
251 .scr_write = ahci_scr_write,
253 .freeze = ahci_freeze,
256 .error_handler = ahci_error_handler,
257 .post_internal_cmd = ahci_post_internal_cmd,
259 .port_start = ahci_port_start,
260 .port_stop = ahci_port_stop,
263 static const struct ata_port_info ahci_port_info[] = {
267 .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
268 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
269 ATA_FLAG_SKIP_D2H_BSY,
270 .pio_mask = 0x1f, /* pio0-4 */
271 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
272 .port_ops = &ahci_ops,
274 /* board_ahci_vt8251 */
277 .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
278 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
279 ATA_FLAG_SKIP_D2H_BSY |
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[] = {
289 { PCI_VENDOR_ID_INTEL, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
290 board_ahci }, /* ICH6 */
291 { PCI_VENDOR_ID_INTEL, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
292 board_ahci }, /* ICH6M */
293 { PCI_VENDOR_ID_INTEL, 0x27c1, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
294 board_ahci }, /* ICH7 */
295 { PCI_VENDOR_ID_INTEL, 0x27c5, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
296 board_ahci }, /* ICH7M */
297 { PCI_VENDOR_ID_INTEL, 0x27c3, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
298 board_ahci }, /* ICH7R */
299 { PCI_VENDOR_ID_AL, 0x5288, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
300 board_ahci }, /* ULi M5288 */
301 { PCI_VENDOR_ID_INTEL, 0x2681, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
302 board_ahci }, /* ESB2 */
303 { PCI_VENDOR_ID_INTEL, 0x2682, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
304 board_ahci }, /* ESB2 */
305 { PCI_VENDOR_ID_INTEL, 0x2683, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
306 board_ahci }, /* ESB2 */
307 { PCI_VENDOR_ID_INTEL, 0x27c6, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
308 board_ahci }, /* ICH7-M DH */
309 { PCI_VENDOR_ID_INTEL, 0x2821, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
310 board_ahci }, /* ICH8 */
311 { PCI_VENDOR_ID_INTEL, 0x2822, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
312 board_ahci }, /* ICH8 */
313 { PCI_VENDOR_ID_INTEL, 0x2824, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
314 board_ahci }, /* ICH8 */
315 { PCI_VENDOR_ID_INTEL, 0x2829, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
316 board_ahci }, /* ICH8M */
317 { PCI_VENDOR_ID_INTEL, 0x282a, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
318 board_ahci }, /* ICH8M */
321 { 0x197b, 0x2360, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
322 board_ahci }, /* JMicron JMB360 */
323 { 0x197b, 0x2361, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
324 board_ahci }, /* JMicron JMB361 */
325 { 0x197b, 0x2363, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
326 board_ahci }, /* JMicron JMB363 */
327 { 0x197b, 0x2365, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
328 board_ahci }, /* JMicron JMB365 */
329 { 0x197b, 0x2366, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
330 board_ahci }, /* JMicron JMB366 */
333 { PCI_VENDOR_ID_ATI, 0x4380, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
334 board_ahci }, /* ATI SB600 non-raid */
335 { PCI_VENDOR_ID_ATI, 0x4381, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
336 board_ahci }, /* ATI SB600 raid */
339 { PCI_VENDOR_ID_VIA, 0x3349, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
340 board_ahci_vt8251 }, /* VIA VT8251 */
343 { PCI_VENDOR_ID_NVIDIA, 0x044c, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
344 board_ahci }, /* MCP65 */
345 { PCI_VENDOR_ID_NVIDIA, 0x044d, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
346 board_ahci }, /* MCP65 */
347 { PCI_VENDOR_ID_NVIDIA, 0x044e, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
348 board_ahci }, /* MCP65 */
349 { PCI_VENDOR_ID_NVIDIA, 0x044f, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
350 board_ahci }, /* MCP65 */
352 { } /* terminate list */
356 static struct pci_driver ahci_pci_driver = {
358 .id_table = ahci_pci_tbl,
359 .probe = ahci_init_one,
360 .remove = ahci_remove_one,
364 static inline unsigned long ahci_port_base_ul (unsigned long base, unsigned int port)
366 return base + 0x100 + (port * 0x80);
369 static inline void __iomem *ahci_port_base (void __iomem *base, unsigned int port)
371 return (void __iomem *) ahci_port_base_ul((unsigned long)base, port);
374 static int ahci_port_start(struct ata_port *ap)
376 struct device *dev = ap->host_set->dev;
377 struct ahci_host_priv *hpriv = ap->host_set->private_data;
378 struct ahci_port_priv *pp;
379 void __iomem *mmio = ap->host_set->mmio_base;
380 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
385 pp = kmalloc(sizeof(*pp), GFP_KERNEL);
388 memset(pp, 0, sizeof(*pp));
390 rc = ata_pad_alloc(ap, dev);
396 mem = dma_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma, GFP_KERNEL);
398 ata_pad_free(ap, dev);
402 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
405 * First item in chunk of DMA memory: 32-slot command table,
406 * 32 bytes each in size
409 pp->cmd_slot_dma = mem_dma;
411 mem += AHCI_CMD_SLOT_SZ;
412 mem_dma += AHCI_CMD_SLOT_SZ;
415 * Second item: Received-FIS area
418 pp->rx_fis_dma = mem_dma;
420 mem += AHCI_RX_FIS_SZ;
421 mem_dma += AHCI_RX_FIS_SZ;
424 * Third item: data area for storing a single command
425 * and its scatter-gather table
428 pp->cmd_tbl_dma = mem_dma;
430 ap->private_data = pp;
432 if (hpriv->cap & HOST_CAP_64)
433 writel((pp->cmd_slot_dma >> 16) >> 16, port_mmio + PORT_LST_ADDR_HI);
434 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
435 readl(port_mmio + PORT_LST_ADDR); /* flush */
437 if (hpriv->cap & HOST_CAP_64)
438 writel((pp->rx_fis_dma >> 16) >> 16, port_mmio + PORT_FIS_ADDR_HI);
439 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
440 readl(port_mmio + PORT_FIS_ADDR); /* flush */
442 writel(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX |
443 PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP |
444 PORT_CMD_START, port_mmio + PORT_CMD);
445 readl(port_mmio + PORT_CMD); /* flush */
451 static void ahci_port_stop(struct ata_port *ap)
453 struct device *dev = ap->host_set->dev;
454 struct ahci_port_priv *pp = ap->private_data;
455 void __iomem *mmio = ap->host_set->mmio_base;
456 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
459 tmp = readl(port_mmio + PORT_CMD);
460 tmp &= ~(PORT_CMD_START | PORT_CMD_FIS_RX);
461 writel(tmp, port_mmio + PORT_CMD);
462 readl(port_mmio + PORT_CMD); /* flush */
464 /* spec says 500 msecs for each PORT_CMD_{START,FIS_RX} bit, so
465 * this is slightly incorrect.
469 ap->private_data = NULL;
470 dma_free_coherent(dev, AHCI_PORT_PRIV_DMA_SZ,
471 pp->cmd_slot, pp->cmd_slot_dma);
472 ata_pad_free(ap, dev);
476 static u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg_in)
481 case SCR_STATUS: sc_reg = 0; break;
482 case SCR_CONTROL: sc_reg = 1; break;
483 case SCR_ERROR: sc_reg = 2; break;
484 case SCR_ACTIVE: sc_reg = 3; break;
489 return readl((void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
493 static void ahci_scr_write (struct ata_port *ap, unsigned int sc_reg_in,
499 case SCR_STATUS: sc_reg = 0; break;
500 case SCR_CONTROL: sc_reg = 1; break;
501 case SCR_ERROR: sc_reg = 2; break;
502 case SCR_ACTIVE: sc_reg = 3; break;
507 writel(val, (void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
510 static int ahci_stop_engine(struct ata_port *ap)
512 void __iomem *mmio = ap->host_set->mmio_base;
513 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);
521 /* wait for engine to stop. TODO: this could be
522 * as long as 500 msec
526 tmp = readl(port_mmio + PORT_CMD);
527 if ((tmp & PORT_CMD_LIST_ON) == 0)
535 static void ahci_start_engine(struct ata_port *ap)
537 void __iomem *mmio = ap->host_set->mmio_base;
538 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
541 tmp = readl(port_mmio + PORT_CMD);
542 tmp |= PORT_CMD_START;
543 writel(tmp, port_mmio + PORT_CMD);
544 readl(port_mmio + PORT_CMD); /* flush */
547 static unsigned int ahci_dev_classify(struct ata_port *ap)
549 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
550 struct ata_taskfile tf;
553 tmp = readl(port_mmio + PORT_SIG);
554 tf.lbah = (tmp >> 24) & 0xff;
555 tf.lbam = (tmp >> 16) & 0xff;
556 tf.lbal = (tmp >> 8) & 0xff;
557 tf.nsect = (tmp) & 0xff;
559 return ata_dev_classify(&tf);
562 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
565 dma_addr_t cmd_tbl_dma;
567 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
569 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
570 pp->cmd_slot[tag].status = 0;
571 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
572 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
575 static int ahci_clo(struct ata_port *ap)
577 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
578 struct ahci_host_priv *hpriv = ap->host_set->private_data;
581 if (!(hpriv->cap & HOST_CAP_CLO))
584 tmp = readl(port_mmio + PORT_CMD);
586 writel(tmp, port_mmio + PORT_CMD);
588 tmp = ata_wait_register(port_mmio + PORT_CMD,
589 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
590 if (tmp & PORT_CMD_CLO)
596 static int ahci_prereset(struct ata_port *ap)
598 if ((ap->flags & AHCI_FLAG_RESET_NEEDS_CLO) &&
599 (ata_busy_wait(ap, ATA_BUSY, 1000) & ATA_BUSY)) {
600 /* ATA_BUSY hasn't cleared, so send a CLO */
604 return ata_std_prereset(ap);
607 static int ahci_softreset(struct ata_port *ap, unsigned int *class)
609 struct ahci_port_priv *pp = ap->private_data;
610 void __iomem *mmio = ap->host_set->mmio_base;
611 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
612 const u32 cmd_fis_len = 5; /* five dwords */
613 const char *reason = NULL;
614 struct ata_taskfile tf;
621 if (ata_port_offline(ap)) {
622 DPRINTK("PHY reports no device\n");
623 *class = ATA_DEV_NONE;
627 /* prepare for SRST (AHCI-1.1 10.4.1) */
628 rc = ahci_stop_engine(ap);
630 reason = "failed to stop engine";
634 /* check BUSY/DRQ, perform Command List Override if necessary */
635 ahci_tf_read(ap, &tf);
636 if (tf.command & (ATA_BUSY | ATA_DRQ)) {
639 if (rc == -EOPNOTSUPP) {
640 reason = "port busy but CLO unavailable";
643 reason = "port busy but CLO failed";
649 ahci_start_engine(ap);
651 ata_tf_init(ap->device, &tf);
654 /* issue the first D2H Register FIS */
655 ahci_fill_cmd_slot(pp, 0,
656 cmd_fis_len | AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY);
659 ata_tf_to_fis(&tf, fis, 0);
660 fis[1] &= ~(1 << 7); /* turn off Command FIS bit */
662 writel(1, port_mmio + PORT_CMD_ISSUE);
664 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1, 1, 500);
667 reason = "1st FIS failed";
671 /* spec says at least 5us, but be generous and sleep for 1ms */
674 /* issue the second D2H Register FIS */
675 ahci_fill_cmd_slot(pp, 0, cmd_fis_len);
678 ata_tf_to_fis(&tf, fis, 0);
679 fis[1] &= ~(1 << 7); /* turn off Command FIS bit */
681 writel(1, port_mmio + PORT_CMD_ISSUE);
682 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
684 /* spec mandates ">= 2ms" before checking status.
685 * We wait 150ms, because that was the magic delay used for
686 * ATAPI devices in Hale Landis's ATADRVR, for the period of time
687 * between when the ATA command register is written, and then
688 * status is checked. Because waiting for "a while" before
689 * checking status is fine, post SRST, we perform this magic
690 * delay here as well.
694 *class = ATA_DEV_NONE;
695 if (ata_port_online(ap)) {
696 if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) {
698 reason = "device not ready";
701 *class = ahci_dev_classify(ap);
704 DPRINTK("EXIT, class=%u\n", *class);
708 ahci_start_engine(ap);
710 ata_port_printk(ap, KERN_ERR, "softreset failed (%s)\n", reason);
714 static int ahci_hardreset(struct ata_port *ap, unsigned int *class)
716 struct ahci_port_priv *pp = ap->private_data;
717 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
718 struct ata_taskfile tf;
723 ahci_stop_engine(ap);
725 /* clear D2H reception area to properly wait for D2H FIS */
726 ata_tf_init(ap->device, &tf);
728 ata_tf_to_fis(&tf, d2h_fis, 0);
730 rc = sata_std_hardreset(ap, class);
732 ahci_start_engine(ap);
734 if (rc == 0 && ata_port_online(ap))
735 *class = ahci_dev_classify(ap);
736 if (*class == ATA_DEV_UNKNOWN)
737 *class = ATA_DEV_NONE;
739 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
743 static void ahci_postreset(struct ata_port *ap, unsigned int *class)
745 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
748 ata_std_postreset(ap, class);
750 /* Make sure port's ATAPI bit is set appropriately */
751 new_tmp = tmp = readl(port_mmio + PORT_CMD);
752 if (*class == ATA_DEV_ATAPI)
753 new_tmp |= PORT_CMD_ATAPI;
755 new_tmp &= ~PORT_CMD_ATAPI;
756 if (new_tmp != tmp) {
757 writel(new_tmp, port_mmio + PORT_CMD);
758 readl(port_mmio + PORT_CMD); /* flush */
762 static u8 ahci_check_status(struct ata_port *ap)
764 void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr;
766 return readl(mmio + PORT_TFDATA) & 0xFF;
769 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
771 struct ahci_port_priv *pp = ap->private_data;
772 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
774 ata_tf_from_fis(d2h_fis, tf);
777 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
779 struct scatterlist *sg;
780 struct ahci_sg *ahci_sg;
781 unsigned int n_sg = 0;
786 * Next, the S/G list.
788 ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
789 ata_for_each_sg(sg, qc) {
790 dma_addr_t addr = sg_dma_address(sg);
791 u32 sg_len = sg_dma_len(sg);
793 ahci_sg->addr = cpu_to_le32(addr & 0xffffffff);
794 ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
795 ahci_sg->flags_size = cpu_to_le32(sg_len - 1);
804 static void ahci_qc_prep(struct ata_queued_cmd *qc)
806 struct ata_port *ap = qc->ap;
807 struct ahci_port_priv *pp = ap->private_data;
808 int is_atapi = is_atapi_taskfile(&qc->tf);
811 const u32 cmd_fis_len = 5; /* five dwords */
815 * Fill in command table information. First, the header,
816 * a SATA Register - Host to Device command FIS.
818 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
820 ata_tf_to_fis(&qc->tf, cmd_tbl, 0);
822 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
823 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
827 if (qc->flags & ATA_QCFLAG_DMAMAP)
828 n_elem = ahci_fill_sg(qc, cmd_tbl);
831 * Fill in command slot information.
833 opts = cmd_fis_len | n_elem << 16;
834 if (qc->tf.flags & ATA_TFLAG_WRITE)
835 opts |= AHCI_CMD_WRITE;
837 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
839 ahci_fill_cmd_slot(pp, qc->tag, opts);
842 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
844 struct ahci_port_priv *pp = ap->private_data;
845 struct ata_eh_info *ehi = &ap->eh_info;
846 unsigned int err_mask = 0, action = 0;
847 struct ata_queued_cmd *qc;
850 ata_ehi_clear_desc(ehi);
852 /* AHCI needs SError cleared; otherwise, it might lock up */
853 serror = ahci_scr_read(ap, SCR_ERROR);
854 ahci_scr_write(ap, SCR_ERROR, serror);
856 /* analyze @irq_stat */
857 ata_ehi_push_desc(ehi, "irq_stat 0x%08x", irq_stat);
859 if (irq_stat & PORT_IRQ_TF_ERR)
860 err_mask |= AC_ERR_DEV;
862 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
863 err_mask |= AC_ERR_HOST_BUS;
864 action |= ATA_EH_SOFTRESET;
867 if (irq_stat & PORT_IRQ_IF_ERR) {
868 err_mask |= AC_ERR_ATA_BUS;
869 action |= ATA_EH_SOFTRESET;
870 ata_ehi_push_desc(ehi, ", interface fatal error");
873 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
874 ata_ehi_hotplugged(ehi);
875 ata_ehi_push_desc(ehi, ", %s", irq_stat & PORT_IRQ_CONNECT ?
876 "connection status changed" : "PHY RDY changed");
879 if (irq_stat & PORT_IRQ_UNK_FIS) {
880 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
882 err_mask |= AC_ERR_HSM;
883 action |= ATA_EH_SOFTRESET;
884 ata_ehi_push_desc(ehi, ", unknown FIS %08x %08x %08x %08x",
885 unk[0], unk[1], unk[2], unk[3]);
888 /* okay, let's hand over to EH */
889 ehi->serror |= serror;
890 ehi->action |= action;
892 qc = ata_qc_from_tag(ap, ap->active_tag);
894 qc->err_mask |= err_mask;
896 ehi->err_mask |= err_mask;
898 if (irq_stat & PORT_IRQ_FREEZE)
904 static void ahci_host_intr(struct ata_port *ap)
906 void __iomem *mmio = ap->host_set->mmio_base;
907 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
908 struct ata_eh_info *ehi = &ap->eh_info;
909 u32 status, qc_active;
912 status = readl(port_mmio + PORT_IRQ_STAT);
913 writel(status, port_mmio + PORT_IRQ_STAT);
915 if (unlikely(status & PORT_IRQ_ERROR)) {
916 ahci_error_intr(ap, status);
921 qc_active = readl(port_mmio + PORT_SCR_ACT);
923 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
925 rc = ata_qc_complete_multiple(ap, qc_active, NULL);
929 ehi->err_mask |= AC_ERR_HSM;
930 ehi->action |= ATA_EH_SOFTRESET;
935 /* hmmm... a spurious interupt */
937 /* some devices send D2H reg with I bit set during NCQ command phase */
938 if (ap->sactive && status & PORT_IRQ_D2H_REG_FIS)
941 /* ignore interim PIO setup fis interrupts */
942 if (ata_tag_valid(ap->active_tag)) {
943 struct ata_queued_cmd *qc =
944 ata_qc_from_tag(ap, ap->active_tag);
946 if (qc && qc->tf.protocol == ATA_PROT_PIO &&
947 (status & PORT_IRQ_PIOS_FIS))
952 ata_port_printk(ap, KERN_INFO, "spurious interrupt "
953 "(irq_stat 0x%x active_tag %d sactive 0x%x)\n",
954 status, ap->active_tag, ap->sactive);
957 static void ahci_irq_clear(struct ata_port *ap)
962 static irqreturn_t ahci_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
964 struct ata_host_set *host_set = dev_instance;
965 struct ahci_host_priv *hpriv;
966 unsigned int i, handled = 0;
968 u32 irq_stat, irq_ack = 0;
972 hpriv = host_set->private_data;
973 mmio = host_set->mmio_base;
975 /* sigh. 0xffffffff is a valid return from h/w */
976 irq_stat = readl(mmio + HOST_IRQ_STAT);
977 irq_stat &= hpriv->port_map;
981 spin_lock(&host_set->lock);
983 for (i = 0; i < host_set->n_ports; i++) {
986 if (!(irq_stat & (1 << i)))
989 ap = host_set->ports[i];
992 VPRINTK("port %u\n", i);
994 VPRINTK("port %u (no irq)\n", i);
996 dev_printk(KERN_WARNING, host_set->dev,
997 "interrupt on disabled port %u\n", i);
1000 irq_ack |= (1 << i);
1004 writel(irq_ack, mmio + HOST_IRQ_STAT);
1008 spin_unlock(&host_set->lock);
1012 return IRQ_RETVAL(handled);
1015 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
1017 struct ata_port *ap = qc->ap;
1018 void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
1020 if (qc->tf.protocol == ATA_PROT_NCQ)
1021 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
1022 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
1023 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1028 static void ahci_freeze(struct ata_port *ap)
1030 void __iomem *mmio = ap->host_set->mmio_base;
1031 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
1034 writel(0, port_mmio + PORT_IRQ_MASK);
1037 static void ahci_thaw(struct ata_port *ap)
1039 void __iomem *mmio = ap->host_set->mmio_base;
1040 void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
1044 tmp = readl(port_mmio + PORT_IRQ_STAT);
1045 writel(tmp, port_mmio + PORT_IRQ_STAT);
1046 writel(1 << ap->id, mmio + HOST_IRQ_STAT);
1048 /* turn IRQ back on */
1049 writel(DEF_PORT_IRQ, port_mmio + PORT_IRQ_MASK);
1052 static void ahci_error_handler(struct ata_port *ap)
1054 if (!(ap->flags & ATA_FLAG_FROZEN)) {
1055 /* restart engine */
1056 ahci_stop_engine(ap);
1057 ahci_start_engine(ap);
1060 /* perform recovery */
1061 ata_do_eh(ap, ahci_prereset, ahci_softreset, ahci_hardreset,
1065 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
1067 struct ata_port *ap = qc->ap;
1069 if (qc->flags & ATA_QCFLAG_FAILED)
1070 qc->err_mask |= AC_ERR_OTHER;
1073 /* make DMA engine forget about the failed command */
1074 ahci_stop_engine(ap);
1075 ahci_start_engine(ap);
1079 static void ahci_setup_port(struct ata_ioports *port, unsigned long base,
1080 unsigned int port_idx)
1082 VPRINTK("ENTER, base==0x%lx, port_idx %u\n", base, port_idx);
1083 base = ahci_port_base_ul(base, port_idx);
1084 VPRINTK("base now==0x%lx\n", base);
1086 port->cmd_addr = base;
1087 port->scr_addr = base + PORT_SCR;
1092 static int ahci_host_init(struct ata_probe_ent *probe_ent)
1094 struct ahci_host_priv *hpriv = probe_ent->private_data;
1095 struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
1096 void __iomem *mmio = probe_ent->mmio_base;
1098 unsigned int i, j, using_dac;
1100 void __iomem *port_mmio;
1102 cap_save = readl(mmio + HOST_CAP);
1103 cap_save &= ( (1<<28) | (1<<17) );
1104 cap_save |= (1 << 27);
1106 /* global controller reset */
1107 tmp = readl(mmio + HOST_CTL);
1108 if ((tmp & HOST_RESET) == 0) {
1109 writel(tmp | HOST_RESET, mmio + HOST_CTL);
1110 readl(mmio + HOST_CTL); /* flush */
1113 /* reset must complete within 1 second, or
1114 * the hardware should be considered fried.
1118 tmp = readl(mmio + HOST_CTL);
1119 if (tmp & HOST_RESET) {
1120 dev_printk(KERN_ERR, &pdev->dev,
1121 "controller reset failed (0x%x)\n", tmp);
1125 writel(HOST_AHCI_EN, mmio + HOST_CTL);
1126 (void) readl(mmio + HOST_CTL); /* flush */
1127 writel(cap_save, mmio + HOST_CAP);
1128 writel(0xf, mmio + HOST_PORTS_IMPL);
1129 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
1131 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
1134 pci_read_config_word(pdev, 0x92, &tmp16);
1136 pci_write_config_word(pdev, 0x92, tmp16);
1139 hpriv->cap = readl(mmio + HOST_CAP);
1140 hpriv->port_map = readl(mmio + HOST_PORTS_IMPL);
1141 probe_ent->n_ports = (hpriv->cap & 0x1f) + 1;
1143 VPRINTK("cap 0x%x port_map 0x%x n_ports %d\n",
1144 hpriv->cap, hpriv->port_map, probe_ent->n_ports);
1146 using_dac = hpriv->cap & HOST_CAP_64;
1148 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1149 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
1151 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1153 dev_printk(KERN_ERR, &pdev->dev,
1154 "64-bit DMA enable failed\n");
1159 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1161 dev_printk(KERN_ERR, &pdev->dev,
1162 "32-bit DMA enable failed\n");
1165 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1167 dev_printk(KERN_ERR, &pdev->dev,
1168 "32-bit consistent DMA enable failed\n");
1173 for (i = 0; i < probe_ent->n_ports; i++) {
1174 #if 0 /* BIOSen initialize this incorrectly */
1175 if (!(hpriv->port_map & (1 << i)))
1179 port_mmio = ahci_port_base(mmio, i);
1180 VPRINTK("mmio %p port_mmio %p\n", mmio, port_mmio);
1182 ahci_setup_port(&probe_ent->port[i],
1183 (unsigned long) mmio, i);
1185 /* make sure port is not active */
1186 tmp = readl(port_mmio + PORT_CMD);
1187 VPRINTK("PORT_CMD 0x%x\n", tmp);
1188 if (tmp & (PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
1189 PORT_CMD_FIS_RX | PORT_CMD_START)) {
1190 tmp &= ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
1191 PORT_CMD_FIS_RX | PORT_CMD_START);
1192 writel(tmp, port_mmio + PORT_CMD);
1193 readl(port_mmio + PORT_CMD); /* flush */
1195 /* spec says 500 msecs for each bit, so
1196 * this is slightly incorrect.
1201 writel(PORT_CMD_SPIN_UP, port_mmio + PORT_CMD);
1206 tmp = readl(port_mmio + PORT_SCR_STAT);
1207 if ((tmp & 0xf) == 0x3)
1212 tmp = readl(port_mmio + PORT_SCR_ERR);
1213 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
1214 writel(tmp, port_mmio + PORT_SCR_ERR);
1216 /* ack any pending irq events for this port */
1217 tmp = readl(port_mmio + PORT_IRQ_STAT);
1218 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1220 writel(tmp, port_mmio + PORT_IRQ_STAT);
1222 writel(1 << i, mmio + HOST_IRQ_STAT);
1225 tmp = readl(mmio + HOST_CTL);
1226 VPRINTK("HOST_CTL 0x%x\n", tmp);
1227 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
1228 tmp = readl(mmio + HOST_CTL);
1229 VPRINTK("HOST_CTL 0x%x\n", tmp);
1231 pci_set_master(pdev);
1236 static void ahci_print_info(struct ata_probe_ent *probe_ent)
1238 struct ahci_host_priv *hpriv = probe_ent->private_data;
1239 struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
1240 void __iomem *mmio = probe_ent->mmio_base;
1241 u32 vers, cap, impl, speed;
1242 const char *speed_s;
1246 vers = readl(mmio + HOST_VERSION);
1248 impl = hpriv->port_map;
1250 speed = (cap >> 20) & 0xf;
1253 else if (speed == 2)
1258 pci_read_config_word(pdev, 0x0a, &cc);
1261 else if (cc == 0x0106)
1263 else if (cc == 0x0104)
1268 dev_printk(KERN_INFO, &pdev->dev,
1269 "AHCI %02x%02x.%02x%02x "
1270 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
1273 (vers >> 24) & 0xff,
1274 (vers >> 16) & 0xff,
1278 ((cap >> 8) & 0x1f) + 1,
1284 dev_printk(KERN_INFO, &pdev->dev,
1290 cap & (1 << 31) ? "64bit " : "",
1291 cap & (1 << 30) ? "ncq " : "",
1292 cap & (1 << 28) ? "ilck " : "",
1293 cap & (1 << 27) ? "stag " : "",
1294 cap & (1 << 26) ? "pm " : "",
1295 cap & (1 << 25) ? "led " : "",
1297 cap & (1 << 24) ? "clo " : "",
1298 cap & (1 << 19) ? "nz " : "",
1299 cap & (1 << 18) ? "only " : "",
1300 cap & (1 << 17) ? "pmp " : "",
1301 cap & (1 << 15) ? "pio " : "",
1302 cap & (1 << 14) ? "slum " : "",
1303 cap & (1 << 13) ? "part " : ""
1307 static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1309 static int printed_version;
1310 struct ata_probe_ent *probe_ent = NULL;
1311 struct ahci_host_priv *hpriv;
1313 void __iomem *mmio_base;
1314 unsigned int board_idx = (unsigned int) ent->driver_data;
1315 int have_msi, pci_dev_busy = 0;
1320 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
1322 if (!printed_version++)
1323 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1325 rc = pci_enable_device(pdev);
1329 rc = pci_request_regions(pdev, DRV_NAME);
1335 if (pci_enable_msi(pdev) == 0)
1342 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
1343 if (probe_ent == NULL) {
1348 memset(probe_ent, 0, sizeof(*probe_ent));
1349 probe_ent->dev = pci_dev_to_dev(pdev);
1350 INIT_LIST_HEAD(&probe_ent->node);
1352 mmio_base = pci_iomap(pdev, AHCI_PCI_BAR, 0);
1353 if (mmio_base == NULL) {
1355 goto err_out_free_ent;
1357 base = (unsigned long) mmio_base;
1359 hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL);
1362 goto err_out_iounmap;
1364 memset(hpriv, 0, sizeof(*hpriv));
1366 probe_ent->sht = ahci_port_info[board_idx].sht;
1367 probe_ent->host_flags = ahci_port_info[board_idx].host_flags;
1368 probe_ent->pio_mask = ahci_port_info[board_idx].pio_mask;
1369 probe_ent->udma_mask = ahci_port_info[board_idx].udma_mask;
1370 probe_ent->port_ops = ahci_port_info[board_idx].port_ops;
1372 probe_ent->irq = pdev->irq;
1373 probe_ent->irq_flags = SA_SHIRQ;
1374 probe_ent->mmio_base = mmio_base;
1375 probe_ent->private_data = hpriv;
1378 hpriv->flags |= AHCI_FLAG_MSI;
1380 /* JMicron-specific fixup: make sure we're in AHCI mode */
1381 if (pdev->vendor == 0x197b)
1382 pci_write_config_byte(pdev, 0x41, 0xa1);
1384 /* initialize adapter */
1385 rc = ahci_host_init(probe_ent);
1389 if (hpriv->cap & HOST_CAP_NCQ)
1390 probe_ent->host_flags |= ATA_FLAG_NCQ;
1392 ahci_print_info(probe_ent);
1394 /* FIXME: check ata_device_add return value */
1395 ata_device_add(probe_ent);
1403 pci_iounmap(pdev, mmio_base);
1408 pci_disable_msi(pdev);
1411 pci_release_regions(pdev);
1414 pci_disable_device(pdev);
1418 static void ahci_remove_one (struct pci_dev *pdev)
1420 struct device *dev = pci_dev_to_dev(pdev);
1421 struct ata_host_set *host_set = dev_get_drvdata(dev);
1422 struct ahci_host_priv *hpriv = host_set->private_data;
1426 for (i = 0; i < host_set->n_ports; i++)
1427 ata_port_detach(host_set->ports[i]);
1429 have_msi = hpriv->flags & AHCI_FLAG_MSI;
1430 free_irq(host_set->irq, host_set);
1432 for (i = 0; i < host_set->n_ports; i++) {
1433 struct ata_port *ap = host_set->ports[i];
1435 ata_scsi_release(ap->host);
1436 scsi_host_put(ap->host);
1440 pci_iounmap(pdev, host_set->mmio_base);
1444 pci_disable_msi(pdev);
1447 pci_release_regions(pdev);
1448 pci_disable_device(pdev);
1449 dev_set_drvdata(dev, NULL);
1452 static int __init ahci_init(void)
1454 return pci_module_init(&ahci_pci_driver);
1457 static void __exit ahci_exit(void)
1459 pci_unregister_driver(&ahci_pci_driver);
1463 MODULE_AUTHOR("Jeff Garzik");
1464 MODULE_DESCRIPTION("AHCI SATA low-level driver");
1465 MODULE_LICENSE("GPL");
1466 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
1467 MODULE_VERSION(DRV_VERSION);
1469 module_init(ahci_init);
1470 module_exit(ahci_exit);