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/dma-mapping.h>
43 #include <linux/device.h>
44 #include <scsi/scsi_host.h>
45 #include <scsi/scsi_cmnd.h>
46 #include <linux/libata.h>
48 #define DRV_NAME "ahci"
49 #define DRV_VERSION "2.3"
55 AHCI_MAX_SG = 168, /* hardware max is 64K */
56 AHCI_DMA_BOUNDARY = 0xffffffff,
57 AHCI_USE_CLUSTERING = 1,
60 AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
62 AHCI_CMD_TBL_CDB = 0x40,
63 AHCI_CMD_TBL_HDR_SZ = 0x80,
64 AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
65 AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
66 AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
68 AHCI_IRQ_ON_SG = (1 << 31),
69 AHCI_CMD_ATAPI = (1 << 5),
70 AHCI_CMD_WRITE = (1 << 6),
71 AHCI_CMD_PREFETCH = (1 << 7),
72 AHCI_CMD_RESET = (1 << 8),
73 AHCI_CMD_CLR_BUSY = (1 << 10),
75 RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
76 RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
77 RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
80 board_ahci_vt8251 = 1,
81 board_ahci_ign_iferr = 2,
85 /* global controller registers */
86 HOST_CAP = 0x00, /* host capabilities */
87 HOST_CTL = 0x04, /* global host control */
88 HOST_IRQ_STAT = 0x08, /* interrupt status */
89 HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
90 HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
93 HOST_RESET = (1 << 0), /* reset controller; self-clear */
94 HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
95 HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
98 HOST_CAP_SSC = (1 << 14), /* Slumber capable */
99 HOST_CAP_CLO = (1 << 24), /* Command List Override support */
100 HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
101 HOST_CAP_SNTF = (1 << 29), /* SNotification register */
102 HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */
103 HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */
105 /* registers for each SATA port */
106 PORT_LST_ADDR = 0x00, /* command list DMA addr */
107 PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
108 PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
109 PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
110 PORT_IRQ_STAT = 0x10, /* interrupt status */
111 PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
112 PORT_CMD = 0x18, /* port command */
113 PORT_TFDATA = 0x20, /* taskfile data */
114 PORT_SIG = 0x24, /* device TF signature */
115 PORT_CMD_ISSUE = 0x38, /* command issue */
116 PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
117 PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
118 PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
119 PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
120 PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
122 /* PORT_IRQ_{STAT,MASK} bits */
123 PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */
124 PORT_IRQ_TF_ERR = (1 << 30), /* task file error */
125 PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */
126 PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */
127 PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */
128 PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */
129 PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */
130 PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
132 PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
133 PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
134 PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
135 PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
136 PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
137 PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */
138 PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */
139 PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */
140 PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */
142 PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
147 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
149 PORT_IRQ_HBUS_DATA_ERR,
150 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
151 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
152 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
155 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
156 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
157 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
158 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
159 PORT_CMD_CLO = (1 << 3), /* Command list override */
160 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
161 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
162 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
164 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
165 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
166 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
167 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
170 AHCI_FLAG_NO_NCQ = (1 << 24),
171 AHCI_FLAG_IGN_IRQ_IF_ERR = (1 << 25), /* ignore IRQ_IF_ERR */
172 AHCI_FLAG_IGN_SERR_INTERNAL = (1 << 27), /* ignore SERR_INTERNAL */
173 AHCI_FLAG_32BIT_ONLY = (1 << 28), /* force 32bit */
174 AHCI_FLAG_MV_PATA = (1 << 29), /* PATA port */
175 AHCI_FLAG_NO_MSI = (1 << 30), /* no PCI MSI */
176 AHCI_FLAG_NO_HOTPLUG = (1 << 31), /* ignore PxSERR.DIAG.N */
178 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
179 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
180 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN,
181 AHCI_LFLAG_COMMON = ATA_LFLAG_SKIP_D2H_BSY,
184 struct ahci_cmd_hdr {
199 struct ahci_host_priv {
200 u32 cap; /* cap to use */
201 u32 port_map; /* port map to use */
202 u32 saved_cap; /* saved initial cap */
203 u32 saved_port_map; /* saved initial port_map */
206 struct ahci_port_priv {
207 struct ahci_cmd_hdr *cmd_slot;
208 dma_addr_t cmd_slot_dma;
210 dma_addr_t cmd_tbl_dma;
212 dma_addr_t rx_fis_dma;
213 /* for NCQ spurious interrupt analysis */
214 unsigned int ncq_saw_d2h:1;
215 unsigned int ncq_saw_dmas:1;
216 unsigned int ncq_saw_sdb:1;
217 u32 intr_mask; /* interrupts to enable */
220 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
221 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
222 static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
223 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
224 static void ahci_irq_clear(struct ata_port *ap);
225 static int ahci_port_start(struct ata_port *ap);
226 static void ahci_port_stop(struct ata_port *ap);
227 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
228 static void ahci_qc_prep(struct ata_queued_cmd *qc);
229 static u8 ahci_check_status(struct ata_port *ap);
230 static void ahci_freeze(struct ata_port *ap);
231 static void ahci_thaw(struct ata_port *ap);
232 static void ahci_error_handler(struct ata_port *ap);
233 static void ahci_vt8251_error_handler(struct ata_port *ap);
234 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
235 static int ahci_port_resume(struct ata_port *ap);
236 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl);
237 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
240 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg);
241 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
242 static int ahci_pci_device_resume(struct pci_dev *pdev);
245 static struct scsi_host_template ahci_sht = {
246 .module = THIS_MODULE,
248 .ioctl = ata_scsi_ioctl,
249 .queuecommand = ata_scsi_queuecmd,
250 .change_queue_depth = ata_scsi_change_queue_depth,
251 .can_queue = AHCI_MAX_CMDS - 1,
252 .this_id = ATA_SHT_THIS_ID,
253 .sg_tablesize = AHCI_MAX_SG,
254 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
255 .emulated = ATA_SHT_EMULATED,
256 .use_clustering = AHCI_USE_CLUSTERING,
257 .proc_name = DRV_NAME,
258 .dma_boundary = AHCI_DMA_BOUNDARY,
259 .slave_configure = ata_scsi_slave_config,
260 .slave_destroy = ata_scsi_slave_destroy,
261 .bios_param = ata_std_bios_param,
264 static const struct ata_port_operations ahci_ops = {
265 .check_status = ahci_check_status,
266 .check_altstatus = ahci_check_status,
267 .dev_select = ata_noop_dev_select,
269 .tf_read = ahci_tf_read,
271 .qc_prep = ahci_qc_prep,
272 .qc_issue = ahci_qc_issue,
274 .irq_clear = ahci_irq_clear,
276 .scr_read = ahci_scr_read,
277 .scr_write = ahci_scr_write,
279 .freeze = ahci_freeze,
282 .error_handler = ahci_error_handler,
283 .post_internal_cmd = ahci_post_internal_cmd,
286 .port_suspend = ahci_port_suspend,
287 .port_resume = ahci_port_resume,
290 .port_start = ahci_port_start,
291 .port_stop = ahci_port_stop,
294 static const struct ata_port_operations ahci_vt8251_ops = {
295 .check_status = ahci_check_status,
296 .check_altstatus = ahci_check_status,
297 .dev_select = ata_noop_dev_select,
299 .tf_read = ahci_tf_read,
301 .qc_prep = ahci_qc_prep,
302 .qc_issue = ahci_qc_issue,
304 .irq_clear = ahci_irq_clear,
306 .scr_read = ahci_scr_read,
307 .scr_write = ahci_scr_write,
309 .freeze = ahci_freeze,
312 .error_handler = ahci_vt8251_error_handler,
313 .post_internal_cmd = ahci_post_internal_cmd,
316 .port_suspend = ahci_port_suspend,
317 .port_resume = ahci_port_resume,
320 .port_start = ahci_port_start,
321 .port_stop = ahci_port_stop,
324 static const struct ata_port_info ahci_port_info[] = {
327 .flags = AHCI_FLAG_COMMON,
328 .link_flags = AHCI_LFLAG_COMMON,
329 .pio_mask = 0x1f, /* pio0-4 */
330 .udma_mask = ATA_UDMA6,
331 .port_ops = &ahci_ops,
333 /* board_ahci_vt8251 */
335 .flags = AHCI_FLAG_COMMON | AHCI_FLAG_NO_NCQ,
336 .link_flags = AHCI_LFLAG_COMMON | ATA_LFLAG_HRST_TO_RESUME,
337 .pio_mask = 0x1f, /* pio0-4 */
338 .udma_mask = ATA_UDMA6,
339 .port_ops = &ahci_vt8251_ops,
341 /* board_ahci_ign_iferr */
343 .flags = AHCI_FLAG_COMMON | AHCI_FLAG_IGN_IRQ_IF_ERR,
344 .link_flags = AHCI_LFLAG_COMMON,
345 .pio_mask = 0x1f, /* pio0-4 */
346 .udma_mask = ATA_UDMA6,
347 .port_ops = &ahci_ops,
349 /* board_ahci_sb600 */
351 .flags = AHCI_FLAG_COMMON |
352 AHCI_FLAG_IGN_SERR_INTERNAL |
353 AHCI_FLAG_32BIT_ONLY,
354 .link_flags = AHCI_LFLAG_COMMON,
355 .pio_mask = 0x1f, /* pio0-4 */
356 .udma_mask = ATA_UDMA6,
357 .port_ops = &ahci_ops,
362 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
363 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
364 AHCI_FLAG_NO_NCQ | AHCI_FLAG_NO_MSI |
366 .link_flags = AHCI_LFLAG_COMMON,
367 .pio_mask = 0x1f, /* pio0-4 */
368 .udma_mask = ATA_UDMA6,
369 .port_ops = &ahci_ops,
373 static const struct pci_device_id ahci_pci_tbl[] = {
375 { PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
376 { PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
377 { PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
378 { PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
379 { PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
380 { PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
381 { PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
382 { PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
383 { PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
384 { PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
385 { PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
386 { PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* ICH8 */
387 { PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
388 { PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
389 { PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
390 { PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
391 { PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
392 { PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
393 { PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
394 { PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
395 { PCI_VDEVICE(INTEL, 0x2929), board_ahci }, /* ICH9M */
396 { PCI_VDEVICE(INTEL, 0x292a), board_ahci }, /* ICH9M */
397 { PCI_VDEVICE(INTEL, 0x292b), board_ahci }, /* ICH9M */
398 { PCI_VDEVICE(INTEL, 0x292c), board_ahci }, /* ICH9M */
399 { PCI_VDEVICE(INTEL, 0x292f), board_ahci }, /* ICH9M */
400 { PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
401 { PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */
402 { PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
403 { PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
405 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
406 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
407 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
410 { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
411 { PCI_VDEVICE(ATI, 0x4390), board_ahci_sb600 }, /* ATI SB700/800 */
412 { PCI_VDEVICE(ATI, 0x4391), board_ahci_sb600 }, /* ATI SB700/800 */
413 { PCI_VDEVICE(ATI, 0x4392), board_ahci_sb600 }, /* ATI SB700/800 */
414 { PCI_VDEVICE(ATI, 0x4393), board_ahci_sb600 }, /* ATI SB700/800 */
415 { PCI_VDEVICE(ATI, 0x4394), board_ahci_sb600 }, /* ATI SB700/800 */
416 { PCI_VDEVICE(ATI, 0x4395), board_ahci_sb600 }, /* ATI SB700/800 */
419 { PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
420 { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
423 { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci }, /* MCP65 */
424 { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci }, /* MCP65 */
425 { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci }, /* MCP65 */
426 { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci }, /* MCP65 */
427 { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci }, /* MCP65 */
428 { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci }, /* MCP65 */
429 { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci }, /* MCP65 */
430 { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci }, /* MCP65 */
431 { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci }, /* MCP67 */
432 { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci }, /* MCP67 */
433 { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci }, /* MCP67 */
434 { PCI_VDEVICE(NVIDIA, 0x0553), board_ahci }, /* MCP67 */
435 { PCI_VDEVICE(NVIDIA, 0x0554), board_ahci }, /* MCP67 */
436 { PCI_VDEVICE(NVIDIA, 0x0555), board_ahci }, /* MCP67 */
437 { PCI_VDEVICE(NVIDIA, 0x0556), board_ahci }, /* MCP67 */
438 { PCI_VDEVICE(NVIDIA, 0x0557), board_ahci }, /* MCP67 */
439 { PCI_VDEVICE(NVIDIA, 0x0558), board_ahci }, /* MCP67 */
440 { PCI_VDEVICE(NVIDIA, 0x0559), board_ahci }, /* MCP67 */
441 { PCI_VDEVICE(NVIDIA, 0x055a), board_ahci }, /* MCP67 */
442 { PCI_VDEVICE(NVIDIA, 0x055b), board_ahci }, /* MCP67 */
443 { PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci }, /* MCP73 */
444 { PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci }, /* MCP73 */
445 { PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci }, /* MCP73 */
446 { PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci }, /* MCP73 */
447 { PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci }, /* MCP73 */
448 { PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci }, /* MCP73 */
449 { PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci }, /* MCP73 */
450 { PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci }, /* MCP73 */
451 { PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci }, /* MCP73 */
452 { PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci }, /* MCP73 */
453 { PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci }, /* MCP73 */
454 { PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci }, /* MCP73 */
455 { PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci }, /* MCP77 */
456 { PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci }, /* MCP77 */
457 { PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci }, /* MCP77 */
458 { PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci }, /* MCP77 */
459 { PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci }, /* MCP77 */
460 { PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci }, /* MCP77 */
461 { PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci }, /* MCP77 */
462 { PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci }, /* MCP77 */
463 { PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci }, /* MCP77 */
464 { PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci }, /* MCP77 */
465 { PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci }, /* MCP77 */
466 { PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci }, /* MCP77 */
469 { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
470 { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 966 */
471 { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
474 { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
476 /* Generic, PCI class code for AHCI */
477 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
478 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
480 { } /* terminate list */
484 static struct pci_driver ahci_pci_driver = {
486 .id_table = ahci_pci_tbl,
487 .probe = ahci_init_one,
488 .remove = ata_pci_remove_one,
490 .suspend = ahci_pci_device_suspend,
491 .resume = ahci_pci_device_resume,
496 static inline int ahci_nr_ports(u32 cap)
498 return (cap & 0x1f) + 1;
501 static inline void __iomem *__ahci_port_base(struct ata_host *host,
502 unsigned int port_no)
504 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
506 return mmio + 0x100 + (port_no * 0x80);
509 static inline void __iomem *ahci_port_base(struct ata_port *ap)
511 return __ahci_port_base(ap->host, ap->port_no);
515 * ahci_save_initial_config - Save and fixup initial config values
516 * @pdev: target PCI device
517 * @pi: associated ATA port info
518 * @hpriv: host private area to store config values
520 * Some registers containing configuration info might be setup by
521 * BIOS and might be cleared on reset. This function saves the
522 * initial values of those registers into @hpriv such that they
523 * can be restored after controller reset.
525 * If inconsistent, config values are fixed up by this function.
530 static void ahci_save_initial_config(struct pci_dev *pdev,
531 const struct ata_port_info *pi,
532 struct ahci_host_priv *hpriv)
534 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
538 /* Values prefixed with saved_ are written back to host after
539 * reset. Values without are used for driver operation.
541 hpriv->saved_cap = cap = readl(mmio + HOST_CAP);
542 hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
544 /* some chips have errata preventing 64bit use */
545 if ((cap & HOST_CAP_64) && (pi->flags & AHCI_FLAG_32BIT_ONLY)) {
546 dev_printk(KERN_INFO, &pdev->dev,
547 "controller can't do 64bit DMA, forcing 32bit\n");
551 if ((cap & HOST_CAP_NCQ) && (pi->flags & AHCI_FLAG_NO_NCQ)) {
552 dev_printk(KERN_INFO, &pdev->dev,
553 "controller can't do NCQ, turning off CAP_NCQ\n");
554 cap &= ~HOST_CAP_NCQ;
558 * Temporary Marvell 6145 hack: PATA port presence
559 * is asserted through the standard AHCI port
560 * presence register, as bit 4 (counting from 0)
562 if (pi->flags & AHCI_FLAG_MV_PATA) {
563 dev_printk(KERN_ERR, &pdev->dev,
564 "MV_AHCI HACK: port_map %x -> %x\n",
566 hpriv->port_map & 0xf);
571 /* cross check port_map and cap.n_ports */
573 u32 tmp_port_map = port_map;
574 int n_ports = ahci_nr_ports(cap);
576 for (i = 0; i < AHCI_MAX_PORTS && n_ports; i++) {
577 if (tmp_port_map & (1 << i)) {
579 tmp_port_map &= ~(1 << i);
583 /* If n_ports and port_map are inconsistent, whine and
584 * clear port_map and let it be generated from n_ports.
586 if (n_ports || tmp_port_map) {
587 dev_printk(KERN_WARNING, &pdev->dev,
588 "nr_ports (%u) and implemented port map "
589 "(0x%x) don't match, using nr_ports\n",
590 ahci_nr_ports(cap), port_map);
595 /* fabricate port_map from cap.nr_ports */
597 port_map = (1 << ahci_nr_ports(cap)) - 1;
598 dev_printk(KERN_WARNING, &pdev->dev,
599 "forcing PORTS_IMPL to 0x%x\n", port_map);
601 /* write the fixed up value to the PI register */
602 hpriv->saved_port_map = port_map;
605 /* record values to use during operation */
607 hpriv->port_map = port_map;
611 * ahci_restore_initial_config - Restore initial config
612 * @host: target ATA host
614 * Restore initial config stored by ahci_save_initial_config().
619 static void ahci_restore_initial_config(struct ata_host *host)
621 struct ahci_host_priv *hpriv = host->private_data;
622 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
624 writel(hpriv->saved_cap, mmio + HOST_CAP);
625 writel(hpriv->saved_port_map, mmio + HOST_PORTS_IMPL);
626 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
629 static unsigned ahci_scr_offset(struct ata_port *ap, unsigned int sc_reg)
631 static const int offset[] = {
632 [SCR_STATUS] = PORT_SCR_STAT,
633 [SCR_CONTROL] = PORT_SCR_CTL,
634 [SCR_ERROR] = PORT_SCR_ERR,
635 [SCR_ACTIVE] = PORT_SCR_ACT,
636 [SCR_NOTIFICATION] = PORT_SCR_NTF,
638 struct ahci_host_priv *hpriv = ap->host->private_data;
640 if (sc_reg < ARRAY_SIZE(offset) &&
641 (sc_reg != SCR_NOTIFICATION || (hpriv->cap & HOST_CAP_SNTF)))
642 return offset[sc_reg];
646 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
648 void __iomem *port_mmio = ahci_port_base(ap);
649 int offset = ahci_scr_offset(ap, sc_reg);
652 *val = readl(port_mmio + offset);
658 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
660 void __iomem *port_mmio = ahci_port_base(ap);
661 int offset = ahci_scr_offset(ap, sc_reg);
664 writel(val, port_mmio + offset);
670 static void ahci_start_engine(struct ata_port *ap)
672 void __iomem *port_mmio = ahci_port_base(ap);
676 tmp = readl(port_mmio + PORT_CMD);
677 tmp |= PORT_CMD_START;
678 writel(tmp, port_mmio + PORT_CMD);
679 readl(port_mmio + PORT_CMD); /* flush */
682 static int ahci_stop_engine(struct ata_port *ap)
684 void __iomem *port_mmio = ahci_port_base(ap);
687 tmp = readl(port_mmio + PORT_CMD);
689 /* check if the HBA is idle */
690 if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
693 /* setting HBA to idle */
694 tmp &= ~PORT_CMD_START;
695 writel(tmp, port_mmio + PORT_CMD);
697 /* wait for engine to stop. This could be as long as 500 msec */
698 tmp = ata_wait_register(port_mmio + PORT_CMD,
699 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
700 if (tmp & PORT_CMD_LIST_ON)
706 static void ahci_start_fis_rx(struct ata_port *ap)
708 void __iomem *port_mmio = ahci_port_base(ap);
709 struct ahci_host_priv *hpriv = ap->host->private_data;
710 struct ahci_port_priv *pp = ap->private_data;
713 /* set FIS registers */
714 if (hpriv->cap & HOST_CAP_64)
715 writel((pp->cmd_slot_dma >> 16) >> 16,
716 port_mmio + PORT_LST_ADDR_HI);
717 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
719 if (hpriv->cap & HOST_CAP_64)
720 writel((pp->rx_fis_dma >> 16) >> 16,
721 port_mmio + PORT_FIS_ADDR_HI);
722 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
724 /* enable FIS reception */
725 tmp = readl(port_mmio + PORT_CMD);
726 tmp |= PORT_CMD_FIS_RX;
727 writel(tmp, port_mmio + PORT_CMD);
730 readl(port_mmio + PORT_CMD);
733 static int ahci_stop_fis_rx(struct ata_port *ap)
735 void __iomem *port_mmio = ahci_port_base(ap);
738 /* disable FIS reception */
739 tmp = readl(port_mmio + PORT_CMD);
740 tmp &= ~PORT_CMD_FIS_RX;
741 writel(tmp, port_mmio + PORT_CMD);
743 /* wait for completion, spec says 500ms, give it 1000 */
744 tmp = ata_wait_register(port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
745 PORT_CMD_FIS_ON, 10, 1000);
746 if (tmp & PORT_CMD_FIS_ON)
752 static void ahci_power_up(struct ata_port *ap)
754 struct ahci_host_priv *hpriv = ap->host->private_data;
755 void __iomem *port_mmio = ahci_port_base(ap);
758 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
761 if (hpriv->cap & HOST_CAP_SSS) {
762 cmd |= PORT_CMD_SPIN_UP;
763 writel(cmd, port_mmio + PORT_CMD);
767 writel(cmd | PORT_CMD_ICC_ACTIVE, port_mmio + PORT_CMD);
771 static void ahci_power_down(struct ata_port *ap)
773 struct ahci_host_priv *hpriv = ap->host->private_data;
774 void __iomem *port_mmio = ahci_port_base(ap);
777 if (!(hpriv->cap & HOST_CAP_SSS))
780 /* put device into listen mode, first set PxSCTL.DET to 0 */
781 scontrol = readl(port_mmio + PORT_SCR_CTL);
783 writel(scontrol, port_mmio + PORT_SCR_CTL);
785 /* then set PxCMD.SUD to 0 */
786 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
787 cmd &= ~PORT_CMD_SPIN_UP;
788 writel(cmd, port_mmio + PORT_CMD);
792 static void ahci_start_port(struct ata_port *ap)
794 /* enable FIS reception */
795 ahci_start_fis_rx(ap);
798 ahci_start_engine(ap);
801 static int ahci_deinit_port(struct ata_port *ap, const char **emsg)
806 rc = ahci_stop_engine(ap);
808 *emsg = "failed to stop engine";
812 /* disable FIS reception */
813 rc = ahci_stop_fis_rx(ap);
815 *emsg = "failed stop FIS RX";
822 static int ahci_reset_controller(struct ata_host *host)
824 struct pci_dev *pdev = to_pci_dev(host->dev);
825 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
828 /* global controller reset */
829 tmp = readl(mmio + HOST_CTL);
830 if ((tmp & HOST_RESET) == 0) {
831 writel(tmp | HOST_RESET, mmio + HOST_CTL);
832 readl(mmio + HOST_CTL); /* flush */
835 /* reset must complete within 1 second, or
836 * the hardware should be considered fried.
840 tmp = readl(mmio + HOST_CTL);
841 if (tmp & HOST_RESET) {
842 dev_printk(KERN_ERR, host->dev,
843 "controller reset failed (0x%x)\n", tmp);
847 /* turn on AHCI mode */
848 writel(HOST_AHCI_EN, mmio + HOST_CTL);
849 (void) readl(mmio + HOST_CTL); /* flush */
851 /* some registers might be cleared on reset. restore initial values */
852 ahci_restore_initial_config(host);
854 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
858 pci_read_config_word(pdev, 0x92, &tmp16);
860 pci_write_config_word(pdev, 0x92, tmp16);
866 static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap,
867 int port_no, void __iomem *mmio,
868 void __iomem *port_mmio)
870 const char *emsg = NULL;
874 /* make sure port is not active */
875 rc = ahci_deinit_port(ap, &emsg);
877 dev_printk(KERN_WARNING, &pdev->dev,
878 "%s (%d)\n", emsg, rc);
881 tmp = readl(port_mmio + PORT_SCR_ERR);
882 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
883 writel(tmp, port_mmio + PORT_SCR_ERR);
886 tmp = readl(port_mmio + PORT_IRQ_STAT);
887 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
889 writel(tmp, port_mmio + PORT_IRQ_STAT);
891 writel(1 << port_no, mmio + HOST_IRQ_STAT);
894 static void ahci_init_controller(struct ata_host *host)
896 struct pci_dev *pdev = to_pci_dev(host->dev);
897 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
899 void __iomem *port_mmio;
902 if (host->ports[0]->flags & AHCI_FLAG_MV_PATA) {
903 port_mmio = __ahci_port_base(host, 4);
905 writel(0, port_mmio + PORT_IRQ_MASK);
908 tmp = readl(port_mmio + PORT_IRQ_STAT);
909 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
911 writel(tmp, port_mmio + PORT_IRQ_STAT);
914 for (i = 0; i < host->n_ports; i++) {
915 struct ata_port *ap = host->ports[i];
917 port_mmio = ahci_port_base(ap);
918 if (ata_port_is_dummy(ap))
921 ahci_port_init(pdev, ap, i, mmio, port_mmio);
924 tmp = readl(mmio + HOST_CTL);
925 VPRINTK("HOST_CTL 0x%x\n", tmp);
926 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
927 tmp = readl(mmio + HOST_CTL);
928 VPRINTK("HOST_CTL 0x%x\n", tmp);
931 static unsigned int ahci_dev_classify(struct ata_port *ap)
933 void __iomem *port_mmio = ahci_port_base(ap);
934 struct ata_taskfile tf;
937 tmp = readl(port_mmio + PORT_SIG);
938 tf.lbah = (tmp >> 24) & 0xff;
939 tf.lbam = (tmp >> 16) & 0xff;
940 tf.lbal = (tmp >> 8) & 0xff;
941 tf.nsect = (tmp) & 0xff;
943 return ata_dev_classify(&tf);
946 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
949 dma_addr_t cmd_tbl_dma;
951 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
953 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
954 pp->cmd_slot[tag].status = 0;
955 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
956 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
959 static int ahci_kick_engine(struct ata_port *ap, int force_restart)
961 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
962 struct ahci_host_priv *hpriv = ap->host->private_data;
966 /* do we need to kick the port? */
967 busy = ahci_check_status(ap) & (ATA_BUSY | ATA_DRQ);
968 if (!busy && !force_restart)
972 rc = ahci_stop_engine(ap);
976 /* need to do CLO? */
982 if (!(hpriv->cap & HOST_CAP_CLO)) {
988 tmp = readl(port_mmio + PORT_CMD);
990 writel(tmp, port_mmio + PORT_CMD);
993 tmp = ata_wait_register(port_mmio + PORT_CMD,
994 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
995 if (tmp & PORT_CMD_CLO)
1000 ahci_start_engine(ap);
1004 static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
1005 struct ata_taskfile *tf, int is_cmd, u16 flags,
1006 unsigned long timeout_msec)
1008 const u32 cmd_fis_len = 5; /* five dwords */
1009 struct ahci_port_priv *pp = ap->private_data;
1010 void __iomem *port_mmio = ahci_port_base(ap);
1011 u8 *fis = pp->cmd_tbl;
1014 /* prep the command */
1015 ata_tf_to_fis(tf, pmp, is_cmd, fis);
1016 ahci_fill_cmd_slot(pp, 0, cmd_fis_len | flags | (pmp << 12));
1019 writel(1, port_mmio + PORT_CMD_ISSUE);
1022 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1,
1025 ahci_kick_engine(ap, 1);
1029 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1034 static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
1035 int pmp, unsigned long deadline)
1037 struct ata_port *ap = link->ap;
1038 const char *reason = NULL;
1039 unsigned long now, msecs;
1040 struct ata_taskfile tf;
1045 if (ata_link_offline(link)) {
1046 DPRINTK("PHY reports no device\n");
1047 *class = ATA_DEV_NONE;
1051 /* prepare for SRST (AHCI-1.1 10.4.1) */
1052 rc = ahci_kick_engine(ap, 1);
1054 ata_link_printk(link, KERN_WARNING,
1055 "failed to reset engine (errno=%d)", rc);
1057 ata_tf_init(link->device, &tf);
1059 /* issue the first D2H Register FIS */
1062 if (time_after(now, deadline))
1063 msecs = jiffies_to_msecs(deadline - now);
1066 if (ahci_exec_polled_cmd(ap, pmp, &tf, 0,
1067 AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY, msecs)) {
1069 reason = "1st FIS failed";
1073 /* spec says at least 5us, but be generous and sleep for 1ms */
1076 /* issue the second D2H Register FIS */
1077 tf.ctl &= ~ATA_SRST;
1078 ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
1080 /* spec mandates ">= 2ms" before checking status.
1081 * We wait 150ms, because that was the magic delay used for
1082 * ATAPI devices in Hale Landis's ATADRVR, for the period of time
1083 * between when the ATA command register is written, and then
1084 * status is checked. Because waiting for "a while" before
1085 * checking status is fine, post SRST, we perform this magic
1086 * delay here as well.
1090 rc = ata_wait_ready(ap, deadline);
1091 /* link occupied, -ENODEV too is an error */
1093 reason = "device not ready";
1096 *class = ahci_dev_classify(ap);
1098 DPRINTK("EXIT, class=%u\n", *class);
1102 ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
1106 static int ahci_softreset(struct ata_link *link, unsigned int *class,
1107 unsigned long deadline)
1109 return ahci_do_softreset(link, class, 0, deadline);
1112 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
1113 unsigned long deadline)
1115 struct ata_port *ap = link->ap;
1116 struct ahci_port_priv *pp = ap->private_data;
1117 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1118 struct ata_taskfile tf;
1123 ahci_stop_engine(ap);
1125 /* clear D2H reception area to properly wait for D2H FIS */
1126 ata_tf_init(link->device, &tf);
1128 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1130 rc = sata_std_hardreset(link, class, deadline);
1132 ahci_start_engine(ap);
1134 if (rc == 0 && ata_link_online(link))
1135 *class = ahci_dev_classify(ap);
1136 if (*class == ATA_DEV_UNKNOWN)
1137 *class = ATA_DEV_NONE;
1139 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1143 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
1144 unsigned long deadline)
1146 struct ata_port *ap = link->ap;
1152 ahci_stop_engine(ap);
1154 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1157 /* vt8251 needs SError cleared for the port to operate */
1158 ahci_scr_read(ap, SCR_ERROR, &serror);
1159 ahci_scr_write(ap, SCR_ERROR, serror);
1161 ahci_start_engine(ap);
1163 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1165 /* vt8251 doesn't clear BSY on signature FIS reception,
1166 * request follow-up softreset.
1168 return rc ?: -EAGAIN;
1171 static void ahci_postreset(struct ata_link *link, unsigned int *class)
1173 struct ata_port *ap = link->ap;
1174 void __iomem *port_mmio = ahci_port_base(ap);
1177 ata_std_postreset(link, class);
1179 /* Make sure port's ATAPI bit is set appropriately */
1180 new_tmp = tmp = readl(port_mmio + PORT_CMD);
1181 if (*class == ATA_DEV_ATAPI)
1182 new_tmp |= PORT_CMD_ATAPI;
1184 new_tmp &= ~PORT_CMD_ATAPI;
1185 if (new_tmp != tmp) {
1186 writel(new_tmp, port_mmio + PORT_CMD);
1187 readl(port_mmio + PORT_CMD); /* flush */
1191 static u8 ahci_check_status(struct ata_port *ap)
1193 void __iomem *mmio = ap->ioaddr.cmd_addr;
1195 return readl(mmio + PORT_TFDATA) & 0xFF;
1198 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
1200 struct ahci_port_priv *pp = ap->private_data;
1201 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1203 ata_tf_from_fis(d2h_fis, tf);
1206 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
1208 struct scatterlist *sg;
1209 struct ahci_sg *ahci_sg;
1210 unsigned int n_sg = 0;
1215 * Next, the S/G list.
1217 ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
1218 ata_for_each_sg(sg, qc) {
1219 dma_addr_t addr = sg_dma_address(sg);
1220 u32 sg_len = sg_dma_len(sg);
1222 ahci_sg->addr = cpu_to_le32(addr & 0xffffffff);
1223 ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
1224 ahci_sg->flags_size = cpu_to_le32(sg_len - 1);
1233 static void ahci_qc_prep(struct ata_queued_cmd *qc)
1235 struct ata_port *ap = qc->ap;
1236 struct ahci_port_priv *pp = ap->private_data;
1237 int is_atapi = is_atapi_taskfile(&qc->tf);
1240 const u32 cmd_fis_len = 5; /* five dwords */
1241 unsigned int n_elem;
1244 * Fill in command table information. First, the header,
1245 * a SATA Register - Host to Device command FIS.
1247 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
1249 ata_tf_to_fis(&qc->tf, 0, 1, cmd_tbl);
1251 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
1252 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
1256 if (qc->flags & ATA_QCFLAG_DMAMAP)
1257 n_elem = ahci_fill_sg(qc, cmd_tbl);
1260 * Fill in command slot information.
1262 opts = cmd_fis_len | n_elem << 16;
1263 if (qc->tf.flags & ATA_TFLAG_WRITE)
1264 opts |= AHCI_CMD_WRITE;
1266 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
1268 ahci_fill_cmd_slot(pp, qc->tag, opts);
1271 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1273 struct ahci_port_priv *pp = ap->private_data;
1274 struct ata_eh_info *ehi = &ap->link.eh_info;
1275 unsigned int err_mask = 0, action = 0;
1276 struct ata_queued_cmd *qc;
1279 ata_ehi_clear_desc(ehi);
1281 /* AHCI needs SError cleared; otherwise, it might lock up */
1282 ahci_scr_read(ap, SCR_ERROR, &serror);
1283 ahci_scr_write(ap, SCR_ERROR, serror);
1285 /* analyze @irq_stat */
1286 ata_ehi_push_desc(ehi, "irq_stat 0x%08x", irq_stat);
1288 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
1289 if (ap->flags & AHCI_FLAG_IGN_IRQ_IF_ERR)
1290 irq_stat &= ~PORT_IRQ_IF_ERR;
1292 if (irq_stat & PORT_IRQ_TF_ERR) {
1293 err_mask |= AC_ERR_DEV;
1294 if (ap->flags & AHCI_FLAG_IGN_SERR_INTERNAL)
1295 serror &= ~SERR_INTERNAL;
1298 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
1299 err_mask |= AC_ERR_HOST_BUS;
1300 action |= ATA_EH_SOFTRESET;
1303 if (irq_stat & PORT_IRQ_IF_ERR) {
1304 err_mask |= AC_ERR_ATA_BUS;
1305 action |= ATA_EH_SOFTRESET;
1306 ata_ehi_push_desc(ehi, "interface fatal error");
1309 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
1310 ata_ehi_hotplugged(ehi);
1311 ata_ehi_push_desc(ehi, "%s", irq_stat & PORT_IRQ_CONNECT ?
1312 "connection status changed" : "PHY RDY changed");
1315 if (irq_stat & PORT_IRQ_UNK_FIS) {
1316 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
1318 err_mask |= AC_ERR_HSM;
1319 action |= ATA_EH_SOFTRESET;
1320 ata_ehi_push_desc(ehi, "unknown FIS %08x %08x %08x %08x",
1321 unk[0], unk[1], unk[2], unk[3]);
1324 /* okay, let's hand over to EH */
1325 ehi->serror |= serror;
1326 ehi->action |= action;
1328 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1330 qc->err_mask |= err_mask;
1332 ehi->err_mask |= err_mask;
1334 if (irq_stat & PORT_IRQ_FREEZE)
1335 ata_port_freeze(ap);
1340 static void ahci_port_intr(struct ata_port *ap)
1342 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1343 struct ata_eh_info *ehi = &ap->link.eh_info;
1344 struct ahci_port_priv *pp = ap->private_data;
1345 u32 status, qc_active;
1346 int rc, known_irq = 0;
1348 status = readl(port_mmio + PORT_IRQ_STAT);
1349 writel(status, port_mmio + PORT_IRQ_STAT);
1351 if (unlikely(status & PORT_IRQ_ERROR)) {
1352 ahci_error_intr(ap, status);
1356 if (status & PORT_IRQ_SDB_FIS) {
1358 * if this is an ATAPI device with AN turned on,
1359 * then we should interrogate the device to
1360 * determine the cause of the interrupt
1362 * for AN - this we should check the SDB FIS
1363 * and find the I and N bits set
1365 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1366 u32 f0 = le32_to_cpu(f[0]);
1368 /* check the 'N' bit in word 0 of the FIS */
1369 if (f0 & (1 << 15)) {
1370 int port_addr = ((f0 & 0x00000f00) >> 8);
1371 struct ata_device *adev;
1372 if (port_addr < ATA_MAX_DEVICES) {
1373 adev = &ap->link.device[port_addr];
1374 if (adev->flags & ATA_DFLAG_AN)
1375 ata_scsi_media_change_notify(adev);
1380 if (ap->link.sactive)
1381 qc_active = readl(port_mmio + PORT_SCR_ACT);
1383 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
1385 rc = ata_qc_complete_multiple(ap, qc_active, NULL);
1389 ehi->err_mask |= AC_ERR_HSM;
1390 ehi->action |= ATA_EH_SOFTRESET;
1391 ata_port_freeze(ap);
1395 /* hmmm... a spurious interupt */
1397 /* if !NCQ, ignore. No modern ATA device has broken HSM
1398 * implementation for non-NCQ commands.
1400 if (!ap->link.sactive)
1403 if (status & PORT_IRQ_D2H_REG_FIS) {
1404 if (!pp->ncq_saw_d2h)
1405 ata_port_printk(ap, KERN_INFO,
1406 "D2H reg with I during NCQ, "
1407 "this message won't be printed again\n");
1408 pp->ncq_saw_d2h = 1;
1412 if (status & PORT_IRQ_DMAS_FIS) {
1413 if (!pp->ncq_saw_dmas)
1414 ata_port_printk(ap, KERN_INFO,
1415 "DMAS FIS during NCQ, "
1416 "this message won't be printed again\n");
1417 pp->ncq_saw_dmas = 1;
1421 if (status & PORT_IRQ_SDB_FIS) {
1422 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1424 if (le32_to_cpu(f[1])) {
1425 /* SDB FIS containing spurious completions
1426 * might be dangerous, whine and fail commands
1427 * with HSM violation. EH will turn off NCQ
1428 * after several such failures.
1430 ata_ehi_push_desc(ehi,
1431 "spurious completions during NCQ "
1432 "issue=0x%x SAct=0x%x FIS=%08x:%08x",
1433 readl(port_mmio + PORT_CMD_ISSUE),
1434 readl(port_mmio + PORT_SCR_ACT),
1435 le32_to_cpu(f[0]), le32_to_cpu(f[1]));
1436 ehi->err_mask |= AC_ERR_HSM;
1437 ehi->action |= ATA_EH_SOFTRESET;
1438 ata_port_freeze(ap);
1440 if (!pp->ncq_saw_sdb)
1441 ata_port_printk(ap, KERN_INFO,
1442 "spurious SDB FIS %08x:%08x during NCQ, "
1443 "this message won't be printed again\n",
1444 le32_to_cpu(f[0]), le32_to_cpu(f[1]));
1445 pp->ncq_saw_sdb = 1;
1451 ata_port_printk(ap, KERN_INFO, "spurious interrupt "
1452 "(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n",
1453 status, ap->link.active_tag, ap->link.sactive);
1456 static void ahci_irq_clear(struct ata_port *ap)
1461 static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
1463 struct ata_host *host = dev_instance;
1464 struct ahci_host_priv *hpriv;
1465 unsigned int i, handled = 0;
1467 u32 irq_stat, irq_ack = 0;
1471 hpriv = host->private_data;
1472 mmio = host->iomap[AHCI_PCI_BAR];
1474 /* sigh. 0xffffffff is a valid return from h/w */
1475 irq_stat = readl(mmio + HOST_IRQ_STAT);
1476 irq_stat &= hpriv->port_map;
1480 spin_lock(&host->lock);
1482 for (i = 0; i < host->n_ports; i++) {
1483 struct ata_port *ap;
1485 if (!(irq_stat & (1 << i)))
1488 ap = host->ports[i];
1491 VPRINTK("port %u\n", i);
1493 VPRINTK("port %u (no irq)\n", i);
1494 if (ata_ratelimit())
1495 dev_printk(KERN_WARNING, host->dev,
1496 "interrupt on disabled port %u\n", i);
1499 irq_ack |= (1 << i);
1503 writel(irq_ack, mmio + HOST_IRQ_STAT);
1507 spin_unlock(&host->lock);
1511 return IRQ_RETVAL(handled);
1514 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
1516 struct ata_port *ap = qc->ap;
1517 void __iomem *port_mmio = ahci_port_base(ap);
1519 if (qc->tf.protocol == ATA_PROT_NCQ)
1520 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
1521 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
1522 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1527 static void ahci_freeze(struct ata_port *ap)
1529 void __iomem *port_mmio = ahci_port_base(ap);
1532 writel(0, port_mmio + PORT_IRQ_MASK);
1535 static void ahci_thaw(struct ata_port *ap)
1537 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
1538 void __iomem *port_mmio = ahci_port_base(ap);
1540 struct ahci_port_priv *pp = ap->private_data;
1543 tmp = readl(port_mmio + PORT_IRQ_STAT);
1544 writel(tmp, port_mmio + PORT_IRQ_STAT);
1545 writel(1 << ap->port_no, mmio + HOST_IRQ_STAT);
1547 /* turn IRQ back on */
1548 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1551 static void ahci_error_handler(struct ata_port *ap)
1553 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1554 /* restart engine */
1555 ahci_stop_engine(ap);
1556 ahci_start_engine(ap);
1559 /* perform recovery */
1560 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_hardreset,
1564 static void ahci_vt8251_error_handler(struct ata_port *ap)
1566 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1567 /* restart engine */
1568 ahci_stop_engine(ap);
1569 ahci_start_engine(ap);
1572 /* perform recovery */
1573 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_vt8251_hardreset,
1577 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
1579 struct ata_port *ap = qc->ap;
1581 /* make DMA engine forget about the failed command */
1582 if (qc->flags & ATA_QCFLAG_FAILED)
1583 ahci_kick_engine(ap, 1);
1586 static int ahci_port_resume(struct ata_port *ap)
1589 ahci_start_port(ap);
1595 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
1597 const char *emsg = NULL;
1600 rc = ahci_deinit_port(ap, &emsg);
1602 ahci_power_down(ap);
1604 ata_port_printk(ap, KERN_ERR, "%s (%d)\n", emsg, rc);
1605 ahci_start_port(ap);
1611 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1613 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1614 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1617 if (mesg.event == PM_EVENT_SUSPEND) {
1618 /* AHCI spec rev1.1 section 8.3.3:
1619 * Software must disable interrupts prior to requesting a
1620 * transition of the HBA to D3 state.
1622 ctl = readl(mmio + HOST_CTL);
1623 ctl &= ~HOST_IRQ_EN;
1624 writel(ctl, mmio + HOST_CTL);
1625 readl(mmio + HOST_CTL); /* flush */
1628 return ata_pci_device_suspend(pdev, mesg);
1631 static int ahci_pci_device_resume(struct pci_dev *pdev)
1633 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1636 rc = ata_pci_device_do_resume(pdev);
1640 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
1641 rc = ahci_reset_controller(host);
1645 ahci_init_controller(host);
1648 ata_host_resume(host);
1654 static int ahci_port_start(struct ata_port *ap)
1656 struct device *dev = ap->host->dev;
1657 struct ahci_port_priv *pp;
1662 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1666 rc = ata_pad_alloc(ap, dev);
1670 mem = dmam_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma,
1674 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
1677 * First item in chunk of DMA memory: 32-slot command table,
1678 * 32 bytes each in size
1681 pp->cmd_slot_dma = mem_dma;
1683 mem += AHCI_CMD_SLOT_SZ;
1684 mem_dma += AHCI_CMD_SLOT_SZ;
1687 * Second item: Received-FIS area
1690 pp->rx_fis_dma = mem_dma;
1692 mem += AHCI_RX_FIS_SZ;
1693 mem_dma += AHCI_RX_FIS_SZ;
1696 * Third item: data area for storing a single command
1697 * and its scatter-gather table
1700 pp->cmd_tbl_dma = mem_dma;
1703 * Save off initial list of interrupts to be enabled.
1704 * This could be changed later
1706 pp->intr_mask = DEF_PORT_IRQ;
1708 ap->private_data = pp;
1710 /* engage engines, captain */
1711 return ahci_port_resume(ap);
1714 static void ahci_port_stop(struct ata_port *ap)
1716 const char *emsg = NULL;
1719 /* de-initialize port */
1720 rc = ahci_deinit_port(ap, &emsg);
1722 ata_port_printk(ap, KERN_WARNING, "%s (%d)\n", emsg, rc);
1725 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
1730 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1731 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
1733 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1735 dev_printk(KERN_ERR, &pdev->dev,
1736 "64-bit DMA enable failed\n");
1741 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1743 dev_printk(KERN_ERR, &pdev->dev,
1744 "32-bit DMA enable failed\n");
1747 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1749 dev_printk(KERN_ERR, &pdev->dev,
1750 "32-bit consistent DMA enable failed\n");
1757 static void ahci_print_info(struct ata_host *host)
1759 struct ahci_host_priv *hpriv = host->private_data;
1760 struct pci_dev *pdev = to_pci_dev(host->dev);
1761 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1762 u32 vers, cap, impl, speed;
1763 const char *speed_s;
1767 vers = readl(mmio + HOST_VERSION);
1769 impl = hpriv->port_map;
1771 speed = (cap >> 20) & 0xf;
1774 else if (speed == 2)
1779 pci_read_config_word(pdev, 0x0a, &cc);
1780 if (cc == PCI_CLASS_STORAGE_IDE)
1782 else if (cc == PCI_CLASS_STORAGE_SATA)
1784 else if (cc == PCI_CLASS_STORAGE_RAID)
1789 dev_printk(KERN_INFO, &pdev->dev,
1790 "AHCI %02x%02x.%02x%02x "
1791 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
1794 (vers >> 24) & 0xff,
1795 (vers >> 16) & 0xff,
1799 ((cap >> 8) & 0x1f) + 1,
1805 dev_printk(KERN_INFO, &pdev->dev,
1811 cap & (1 << 31) ? "64bit " : "",
1812 cap & (1 << 30) ? "ncq " : "",
1813 cap & (1 << 29) ? "sntf " : "",
1814 cap & (1 << 28) ? "ilck " : "",
1815 cap & (1 << 27) ? "stag " : "",
1816 cap & (1 << 26) ? "pm " : "",
1817 cap & (1 << 25) ? "led " : "",
1819 cap & (1 << 24) ? "clo " : "",
1820 cap & (1 << 19) ? "nz " : "",
1821 cap & (1 << 18) ? "only " : "",
1822 cap & (1 << 17) ? "pmp " : "",
1823 cap & (1 << 15) ? "pio " : "",
1824 cap & (1 << 14) ? "slum " : "",
1825 cap & (1 << 13) ? "part " : ""
1829 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1831 static int printed_version;
1832 struct ata_port_info pi = ahci_port_info[ent->driver_data];
1833 const struct ata_port_info *ppi[] = { &pi, NULL };
1834 struct device *dev = &pdev->dev;
1835 struct ahci_host_priv *hpriv;
1836 struct ata_host *host;
1841 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
1843 if (!printed_version++)
1844 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1846 /* acquire resources */
1847 rc = pcim_enable_device(pdev);
1851 rc = pcim_iomap_regions(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
1853 pcim_pin_device(pdev);
1857 if ((pi.flags & AHCI_FLAG_NO_MSI) || pci_enable_msi(pdev))
1860 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1864 /* save initial config */
1865 ahci_save_initial_config(pdev, &pi, hpriv);
1868 if (hpriv->cap & HOST_CAP_NCQ)
1869 pi.flags |= ATA_FLAG_NCQ;
1871 host = ata_host_alloc_pinfo(&pdev->dev, ppi, fls(hpriv->port_map));
1874 host->iomap = pcim_iomap_table(pdev);
1875 host->private_data = hpriv;
1877 for (i = 0; i < host->n_ports; i++) {
1878 struct ata_port *ap = host->ports[i];
1879 void __iomem *port_mmio = ahci_port_base(ap);
1881 ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");
1882 ata_port_pbar_desc(ap, AHCI_PCI_BAR,
1883 0x100 + ap->port_no * 0x80, "port");
1885 /* standard SATA port setup */
1886 if (hpriv->port_map & (1 << i))
1887 ap->ioaddr.cmd_addr = port_mmio;
1889 /* disabled/not-implemented port */
1891 ap->ops = &ata_dummy_port_ops;
1894 /* initialize adapter */
1895 rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
1899 rc = ahci_reset_controller(host);
1903 ahci_init_controller(host);
1904 ahci_print_info(host);
1906 pci_set_master(pdev);
1907 return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
1911 static int __init ahci_init(void)
1913 return pci_register_driver(&ahci_pci_driver);
1916 static void __exit ahci_exit(void)
1918 pci_unregister_driver(&ahci_pci_driver);
1922 MODULE_AUTHOR("Jeff Garzik");
1923 MODULE_DESCRIPTION("AHCI SATA low-level driver");
1924 MODULE_LICENSE("GPL");
1925 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
1926 MODULE_VERSION(DRV_VERSION);
1928 module_init(ahci_init);
1929 module_exit(ahci_exit);