2 * GRUB -- GRand Unified Bootloader
3 * Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
5 * GRUB is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * GRUB is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
20 #include <grub/disk.h>
22 #include <grub/time.h>
25 #include <grub/scsi.h>
26 #include <grub/misc.h>
27 #include <grub/list.h>
28 #include <grub/loader.h>
30 GRUB_MOD_LICENSE ("GPLv3+");
32 struct grub_ahci_cmd_head
35 grub_uint32_t transferred;
36 grub_uint64_t command_table_base;
37 grub_uint32_t unused[4];
40 struct grub_ahci_prdt_entry
42 grub_uint64_t data_base;
47 struct grub_ahci_cmd_table
49 grub_uint8_t cfis[0x40];
50 grub_uint8_t command[0x10];
51 grub_uint8_t reserved[0x30];
52 struct grub_ahci_prdt_entry prdt[1];
55 struct grub_ahci_hba_port
57 grub_uint64_t command_list_base;
58 grub_uint64_t fis_base;
59 grub_uint32_t intstatus;
61 grub_uint32_t command;
62 grub_uint32_t unused1;
63 grub_uint32_t task_file_data;
66 grub_uint32_t unused2;
67 grub_uint32_t sata_error;
68 grub_uint32_t sata_active;
69 grub_uint32_t command_issue;
70 grub_uint32_t unused3;
72 grub_uint32_t unused4[15];
75 enum grub_ahci_hba_port_command
77 GRUB_AHCI_HBA_PORT_CMD_ST = 0x01,
78 GRUB_AHCI_HBA_PORT_CMD_SPIN_UP = 0x02,
79 GRUB_AHCI_HBA_PORT_CMD_POWER_ON = 0x04,
80 GRUB_AHCI_HBA_PORT_CMD_FRE = 0x10,
81 GRUB_AHCI_HBA_PORT_CMD_CR = 0x8000,
82 GRUB_AHCI_HBA_PORT_CMD_FR = 0x4000,
85 enum grub_ahci_hba_port_int_status
87 GRUB_AHCI_HBA_PORT_IS_IFS = (1UL << 27),
88 GRUB_AHCI_HBA_PORT_IS_HBDS = (1UL << 28),
89 GRUB_AHCI_HBA_PORT_IS_HBFS = (1UL << 29),
90 GRUB_AHCI_HBA_PORT_IS_TFES = (1UL << 30),
93 #define GRUB_AHCI_HBA_PORT_IS_FATAL_MASK ( \
94 GRUB_AHCI_HBA_PORT_IS_IFS | \
95 GRUB_AHCI_HBA_PORT_IS_HBDS | \
96 GRUB_AHCI_HBA_PORT_IS_HBFS | \
97 GRUB_AHCI_HBA_PORT_IS_TFES)
102 grub_uint32_t global_control;
103 grub_uint32_t intr_status;
104 grub_uint32_t ports_implemented;
105 grub_uint32_t unused1[6];
106 grub_uint32_t bios_handoff;
107 grub_uint32_t unused2[53];
108 struct grub_ahci_hba_port ports[32];
111 struct grub_ahci_received_fis
118 GRUB_AHCI_HBA_CAP_NPORTS_MASK = 0x1f
123 GRUB_AHCI_HBA_GLOBAL_CONTROL_RESET = 0x00000001,
124 GRUB_AHCI_HBA_GLOBAL_CONTROL_INTR_EN = 0x00000002,
125 GRUB_AHCI_HBA_GLOBAL_CONTROL_AHCI_EN = 0x80000000,
130 GRUB_AHCI_BIOS_HANDOFF_BIOS_OWNED = 1,
131 GRUB_AHCI_BIOS_HANDOFF_OS_OWNED = 2,
132 GRUB_AHCI_BIOS_HANDOFF_OS_OWNERSHIP_CHANGED = 8,
133 GRUB_AHCI_BIOS_HANDOFF_RWC = 8
137 struct grub_ahci_device
139 struct grub_ahci_device *next;
140 struct grub_ahci_device **prev;
141 volatile struct grub_ahci_hba *hba;
144 struct grub_pci_dma_chunk *command_list_chunk;
145 volatile struct grub_ahci_cmd_head *command_list;
146 struct grub_pci_dma_chunk *command_table_chunk;
147 volatile struct grub_ahci_cmd_table *command_table;
148 struct grub_pci_dma_chunk *rfis;
154 grub_ahci_readwrite_real (struct grub_ahci_device *dev,
155 struct grub_disk_ata_pass_through_parms *parms,
156 int spinup, int reset);
161 GRUB_AHCI_CONFIG_READ = 0,
162 GRUB_AHCI_CONFIG_CFIS_LENGTH_MASK = 0x1f,
163 GRUB_AHCI_CONFIG_ATAPI = 0x20,
164 GRUB_AHCI_CONFIG_WRITE = 0x40,
165 GRUB_AHCI_CONFIG_PREFETCH = 0x80,
166 GRUB_AHCI_CONFIG_RESET = 0x100,
167 GRUB_AHCI_CONFIG_BIST = 0x200,
168 GRUB_AHCI_CONFIG_CLEAR_R_OK = 0x400,
169 GRUB_AHCI_CONFIG_PMP_MASK = 0xf000,
170 GRUB_AHCI_CONFIG_PRDT_LENGTH_MASK = 0xffff0000,
172 #define GRUB_AHCI_CONFIG_CFIS_LENGTH_SHIFT 0
173 #define GRUB_AHCI_CONFIG_PMP_SHIFT 12
174 #define GRUB_AHCI_CONFIG_PRDT_LENGTH_SHIFT 16
175 #define GRUB_AHCI_INTERRUPT_ON_COMPLETE 0x80000000
177 #define GRUB_AHCI_PRDT_MAX_CHUNK_LENGTH 0x200000
179 static struct grub_ahci_device *grub_ahci_devices;
183 grub_ahci_pciinit (grub_pci_device_t dev,
184 grub_pci_id_t pciid __attribute__ ((unused)),
185 void *data __attribute__ ((unused)))
187 grub_pci_address_t addr;
191 volatile struct grub_ahci_hba *hba;
194 addr = grub_pci_make_address (dev, GRUB_PCI_REG_CLASS);
195 class = grub_pci_read (addr);
197 /* Check if this class ID matches that of a PCI IDE Controller. */
198 if (class >> 8 != 0x010601)
201 addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG5);
203 bar = grub_pci_read (addr);
205 if ((bar & (GRUB_PCI_ADDR_SPACE_MASK | GRUB_PCI_ADDR_MEM_TYPE_MASK
206 | GRUB_PCI_ADDR_MEM_PREFETCH))
207 != (GRUB_PCI_ADDR_SPACE_MEMORY | GRUB_PCI_ADDR_MEM_TYPE_32))
210 addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
211 grub_pci_write_word (addr, grub_pci_read_word (addr)
212 | GRUB_PCI_COMMAND_MEM_ENABLED | GRUB_PCI_COMMAND_BUS_MASTER);
214 hba = grub_pci_device_map_range (dev, bar & GRUB_PCI_ADDR_MEM_MASK,
216 grub_dprintf ("ahci", "dev: %x:%x.%x\n", dev.bus, dev.device, dev.function);
218 grub_dprintf ("ahci", "tfd[0]: %x\n",
219 hba->ports[0].task_file_data);
220 grub_dprintf ("ahci", "cmd[0]: %x\n",
221 hba->ports[0].command);
222 grub_dprintf ("ahci", "st[0]: %x\n",
223 hba->ports[0].status);
224 grub_dprintf ("ahci", "err[0]: %x\n",
225 hba->ports[0].sata_error);
227 grub_dprintf ("ahci", "tfd[1]: %x\n",
228 hba->ports[1].task_file_data);
229 grub_dprintf ("ahci", "cmd[1]: %x\n",
230 hba->ports[1].command);
231 grub_dprintf ("ahci", "st[1]: %x\n",
232 hba->ports[1].status);
233 grub_dprintf ("ahci", "err[1]: %x\n",
234 hba->ports[1].sata_error);
236 hba->ports[1].sata_error = hba->ports[1].sata_error;
238 grub_dprintf ("ahci", "err[1]: %x\n",
239 hba->ports[1].sata_error);
241 grub_dprintf ("ahci", "BH:%x\n", hba->bios_handoff);
243 if (! (hba->bios_handoff & GRUB_AHCI_BIOS_HANDOFF_OS_OWNED))
245 grub_uint64_t endtime;
247 grub_dprintf ("ahci", "Requesting AHCI ownership\n");
248 hba->bios_handoff = (hba->bios_handoff & ~GRUB_AHCI_BIOS_HANDOFF_RWC)
249 | GRUB_AHCI_BIOS_HANDOFF_OS_OWNED;
250 grub_dprintf ("ahci", "Waiting for BIOS to give up ownership\n");
251 endtime = grub_get_time_ms () + 1000;
252 while ((hba->bios_handoff & GRUB_AHCI_BIOS_HANDOFF_BIOS_OWNED)
253 && grub_get_time_ms () < endtime);
254 if (hba->bios_handoff & GRUB_AHCI_BIOS_HANDOFF_BIOS_OWNED)
256 grub_dprintf ("ahci", "Forcibly taking ownership\n");
257 hba->bios_handoff = GRUB_AHCI_BIOS_HANDOFF_OS_OWNED;
258 hba->bios_handoff |= GRUB_AHCI_BIOS_HANDOFF_OS_OWNERSHIP_CHANGED;
261 grub_dprintf ("ahci", "AHCI ownership obtained\n");
264 grub_dprintf ("ahci", "AHCI is already in OS mode\n");
266 grub_dprintf ("ahci", "GLC:%x\n", hba->global_control);
268 grub_dprintf ("ahci", "err[1]: %x\n",
269 hba->ports[1].sata_error);
271 if (!(hba->global_control & GRUB_AHCI_HBA_GLOBAL_CONTROL_AHCI_EN))
272 grub_dprintf ("ahci", "AHCI is in compat mode. Switching\n");
274 grub_dprintf ("ahci", "AHCI is in AHCI mode.\n");
276 grub_dprintf ("ahci", "err[1]: %x\n",
277 hba->ports[1].sata_error);
279 grub_dprintf ("ahci", "GLC:%x\n", hba->global_control);
282 grub_uint64_t endtime;
283 hba->global_control |= 1;
284 endtime = grub_get_time_ms () + 1000;
285 while (hba->global_control & 1)
286 if (grub_get_time_ms () > endtime)
288 grub_dprintf ("ahci", "couldn't reset AHCI\n");
293 grub_dprintf ("ahci", "GLC:%x\n", hba->global_control);
295 grub_dprintf ("ahci", "err[1]: %x\n",
296 hba->ports[1].sata_error);
298 for (i = 0; i < 5; i++)
300 hba->global_control |= GRUB_AHCI_HBA_GLOBAL_CONTROL_AHCI_EN;
302 if (hba->global_control & GRUB_AHCI_HBA_GLOBAL_CONTROL_AHCI_EN)
307 grub_dprintf ("ahci", "Couldn't put AHCI in AHCI mode\n");
311 grub_dprintf ("ahci", "GLC:%x\n", hba->global_control);
313 grub_dprintf ("ahci", "err[1]: %x\n",
314 hba->ports[1].sata_error);
316 grub_dprintf ("ahci", "err[1]: %x\n",
317 hba->ports[1].sata_error);
319 grub_dprintf ("ahci", "GLC:%x\n", hba->global_control);
321 for (i = 0; i < 5; i++)
323 hba->global_control |= GRUB_AHCI_HBA_GLOBAL_CONTROL_AHCI_EN;
325 if (hba->global_control & GRUB_AHCI_HBA_GLOBAL_CONTROL_AHCI_EN)
330 grub_dprintf ("ahci", "Couldn't put AHCI in AHCI mode\n");
334 grub_dprintf ("ahci", "err[1]: %x\n",
335 hba->ports[1].sata_error);
337 grub_dprintf ("ahci", "GLC:%x\n", hba->global_control);
339 nports = (GRUB_AHCI_HBA_CAP_NPORTS_MASK) + 1;
341 grub_dprintf ("ahci", "%d AHCI ports, PI = 0x%x\n", nports,
342 hba->ports_implemented);
344 struct grub_ahci_device *adevs[GRUB_AHCI_HBA_CAP_NPORTS_MASK + 1];
345 struct grub_ahci_device *failed_adevs[GRUB_AHCI_HBA_CAP_NPORTS_MASK + 1];
346 grub_uint32_t fr_running = 0;
348 for (i = 0; i < nports; i++)
350 for (i = 0; i < nports; i++)
352 if (!(hba->ports_implemented & (1 << i)))
358 adevs[i] = grub_zalloc (sizeof (*adevs[i]));
364 adevs[i]->present = 1;
365 adevs[i]->num = numdevs++;
368 for (i = 0; i < nports; i++)
371 adevs[i]->hba->ports[adevs[i]->port].sata_error = adevs[i]->hba->ports[adevs[i]->port].sata_error;
372 grub_dprintf ("ahci", "port: %d, err: %x\n", adevs[i]->port,
373 adevs[i]->hba->ports[adevs[i]->port].sata_error);
375 adevs[i]->command_list_chunk = grub_memalign_dma32 (1024, sizeof (struct grub_ahci_cmd_head) * 32);
376 if (!adevs[i]->command_list_chunk)
382 adevs[i]->command_table_chunk = grub_memalign_dma32 (1024,
383 sizeof (struct grub_ahci_cmd_table));
384 if (!adevs[i]->command_table_chunk)
386 grub_dma_free (adevs[i]->command_list_chunk);
391 adevs[i]->command_list = grub_dma_get_virt (adevs[i]->command_list_chunk);
392 adevs[i]->command_table = grub_dma_get_virt (adevs[i]->command_table_chunk);
394 grub_memset ((void *) adevs[i]->command_list, 0,
395 sizeof (struct grub_ahci_cmd_table));
396 grub_memset ((void *) adevs[i]->command_table, 0,
397 sizeof (struct grub_ahci_cmd_head) * 32);
399 adevs[i]->command_list->command_table_base
400 = grub_dma_get_phys (adevs[i]->command_table_chunk);
402 grub_dprintf ("ahci", "found device ahci%d (port %d), command_table = %p, command_list = %p\n",
403 adevs[i]->num, adevs[i]->port, grub_dma_get_virt (adevs[i]->command_table_chunk),
404 grub_dma_get_virt (adevs[i]->command_list_chunk));
406 adevs[i]->hba->ports[adevs[i]->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_FRE;
409 grub_uint64_t endtime;
410 endtime = grub_get_time_ms () + 1000;
412 while (grub_get_time_ms () < endtime)
414 for (i = 0; i < nports; i++)
415 if (adevs[i] && (adevs[i]->hba->ports[adevs[i]->port].command & GRUB_AHCI_HBA_PORT_CMD_FR))
421 for (i = 0; i < nports; i++)
422 if (adevs[i] && (adevs[i]->hba->ports[adevs[i]->port].command & GRUB_AHCI_HBA_PORT_CMD_FR))
424 grub_dprintf ("ahci", "couldn't stop FR on port %d\n", i);
425 failed_adevs[i] = adevs[i];
429 for (i = 0; i < nports; i++)
431 adevs[i]->hba->ports[adevs[i]->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_ST;
432 endtime = grub_get_time_ms () + 1000;
434 while (grub_get_time_ms () < endtime)
436 for (i = 0; i < nports; i++)
437 if (adevs[i] && (adevs[i]->hba->ports[adevs[i]->port].command & GRUB_AHCI_HBA_PORT_CMD_CR))
443 for (i = 0; i < nports; i++)
444 if (adevs[i] && (adevs[i]->hba->ports[adevs[i]->port].command & GRUB_AHCI_HBA_PORT_CMD_CR))
446 grub_dprintf ("ahci", "couldn't stop CR on port %d\n", i);
447 failed_adevs[i] = adevs[i];
450 for (i = 0; i < nports; i++)
453 adevs[i]->hba->ports[adevs[i]->port].inten = 0;
454 adevs[i]->hba->ports[adevs[i]->port].intstatus = ~0;
455 // adevs[i]->hba->ports[adevs[i]->port].fbs = 0;
457 grub_dprintf ("ahci", "port: %d, err: %x\n", adevs[i]->port,
458 adevs[i]->hba->ports[adevs[i]->port].sata_error);
460 adevs[i]->rfis = grub_memalign_dma32 (4096,
461 sizeof (struct grub_ahci_received_fis));
462 grub_memset ((char *) grub_dma_get_virt (adevs[i]->rfis), 0,
463 sizeof (struct grub_ahci_received_fis));
464 grub_memset ((char *) grub_dma_get_virt (adevs[i]->command_list_chunk), 0,
465 sizeof (struct grub_ahci_cmd_head));
466 grub_memset ((char *) grub_dma_get_virt (adevs[i]->command_table_chunk), 0,
467 sizeof (struct grub_ahci_cmd_table));
468 adevs[i]->hba->ports[adevs[i]->port].fis_base = grub_dma_get_phys (adevs[i]->rfis);
469 adevs[i]->hba->ports[adevs[i]->port].command_list_base
470 = grub_dma_get_phys (adevs[i]->command_list_chunk);
471 adevs[i]->hba->ports[adevs[i]->port].command_issue = 0;
472 adevs[i]->hba->ports[adevs[i]->port].command |= GRUB_AHCI_HBA_PORT_CMD_FRE;
475 endtime = grub_get_time_ms () + 1000;
477 while (grub_get_time_ms () < endtime)
479 for (i = 0; i < nports; i++)
480 if (adevs[i] && !(adevs[i]->hba->ports[adevs[i]->port].command & GRUB_AHCI_HBA_PORT_CMD_FR))
486 for (i = 0; i < nports; i++)
487 if (adevs[i] && !(adevs[i]->hba->ports[adevs[i]->port].command & GRUB_AHCI_HBA_PORT_CMD_FR))
489 grub_dprintf ("ahci", "couldn't start FR on port %d\n", i);
490 failed_adevs[i] = adevs[i];
494 for (i = 0; i < nports; i++)
497 grub_dprintf ("ahci", "port: %d, err: %x\n", adevs[i]->port,
498 adevs[i]->hba->ports[adevs[i]->port].sata_error);
499 fr_running |= (1 << i);
501 adevs[i]->hba->ports[adevs[i]->port].command |= GRUB_AHCI_HBA_PORT_CMD_SPIN_UP;
502 adevs[i]->hba->ports[adevs[i]->port].command |= GRUB_AHCI_HBA_PORT_CMD_POWER_ON;
503 adevs[i]->hba->ports[adevs[i]->port].command |= 1 << 28;
505 grub_dprintf ("ahci", "port: %d, err: %x\n", adevs[i]->port,
506 adevs[i]->hba->ports[adevs[i]->port].sata_error);
509 /* 10ms should actually be enough. */
510 endtime = grub_get_time_ms () + 100;
512 while (grub_get_time_ms () < endtime)
514 for (i = 0; i < nports; i++)
515 if (adevs[i] && (adevs[i]->hba->ports[adevs[i]->port].status & 7) != 3)
521 for (i = 0; i < nports; i++)
522 if (adevs[i] && (adevs[i]->hba->ports[adevs[i]->port].status & 7) != 3)
524 grub_dprintf ("ahci", "couldn't detect device on port %d\n", i);
525 failed_adevs[i] = adevs[i];
529 for (i = 0; i < nports; i++)
532 grub_dprintf ("ahci", "port %d, err: %x\n", adevs[i]->port,
533 adevs[i]->hba->ports[adevs[i]->port].sata_error);
535 adevs[i]->hba->ports[adevs[i]->port].command |= GRUB_AHCI_HBA_PORT_CMD_POWER_ON;
536 adevs[i]->hba->ports[adevs[i]->port].command |= GRUB_AHCI_HBA_PORT_CMD_SPIN_UP;
538 grub_dprintf ("ahci", "port %d, err: %x\n", adevs[i]->port,
539 adevs[i]->hba->ports[adevs[i]->port].sata_error);
541 adevs[i]->hba->ports[adevs[i]->port].sata_error = ~0;
542 grub_dprintf ("ahci", "port %d, err: %x\n", adevs[i]->port,
543 adevs[i]->hba->ports[adevs[i]->port].sata_error);
545 grub_dprintf ("ahci", "port %d, offset: %x, tfd:%x, CMD: %x\n", adevs[i]->port,
546 (int) ((char *) &adevs[i]->hba->ports[adevs[i]->port].task_file_data -
547 (char *) adevs[i]->hba),
548 adevs[i]->hba->ports[adevs[i]->port].task_file_data,
549 adevs[i]->hba->ports[adevs[i]->port].command);
551 grub_dprintf ("ahci", "port %d, err: %x\n", adevs[i]->port,
552 adevs[i]->hba->ports[adevs[i]->port].sata_error);
556 for (i = 0; i < nports; i++)
559 grub_dprintf ("ahci", "port %d, offset: %x, tfd:%x, CMD: %x\n", adevs[i]->port,
560 (int) ((char *) &adevs[i]->hba->ports[adevs[i]->port].task_file_data -
561 (char *) adevs[i]->hba),
562 adevs[i]->hba->ports[adevs[i]->port].task_file_data,
563 adevs[i]->hba->ports[adevs[i]->port].command);
565 grub_dprintf ("ahci", "port: %d, err: %x\n", adevs[i]->port,
566 adevs[i]->hba->ports[adevs[i]->port].sata_error);
568 adevs[i]->hba->ports[adevs[i]->port].command
569 = (adevs[i]->hba->ports[adevs[i]->port].command & 0x0fffffff) | (1 << 28)
570 | GRUB_AHCI_HBA_PORT_CMD_SPIN_UP
571 | GRUB_AHCI_HBA_PORT_CMD_POWER_ON;
573 /* struct grub_disk_ata_pass_through_parms parms2;
574 grub_memset (&parms2, 0, sizeof (parms2));
575 parms2.taskfile.cmd = 8;
576 grub_ahci_readwrite_real (dev, &parms2, 1, 1);*/
579 endtime = grub_get_time_ms () + 10000;
581 while (grub_get_time_ms () < endtime)
583 for (i = 0; i < nports; i++)
584 if (adevs[i] && (adevs[i]->hba->ports[adevs[i]->port].task_file_data & (GRUB_ATA_STATUS_BUSY | GRUB_ATA_STATUS_DRQ)))
590 for (i = 0; i < nports; i++)
591 if (adevs[i] && (adevs[i]->hba->ports[adevs[i]->port].task_file_data & (GRUB_ATA_STATUS_BUSY | GRUB_ATA_STATUS_DRQ)))
593 grub_dprintf ("ahci", "port %d is busy\n", i);
594 failed_adevs[i] = adevs[i];
598 for (i = 0; i < nports; i++)
600 adevs[i]->hba->ports[adevs[i]->port].command |= GRUB_AHCI_HBA_PORT_CMD_ST;
602 endtime = grub_get_time_ms () + 1000;
604 while (grub_get_time_ms () < endtime)
606 for (i = 0; i < nports; i++)
607 if (adevs[i] && !(adevs[i]->hba->ports[adevs[i]->port].command & GRUB_AHCI_HBA_PORT_CMD_CR))
613 for (i = 0; i < nports; i++)
614 if (adevs[i] && !(adevs[i]->hba->ports[adevs[i]->port].command & GRUB_AHCI_HBA_PORT_CMD_CR))
616 grub_dprintf ("ahci", "couldn't start CR on port %d\n", i);
617 failed_adevs[i] = adevs[i];
621 grub_dprintf ("ahci", "cleaning up failed devs\n");
623 for (i = 0; i < nports; i++)
624 if (failed_adevs[i] && (fr_running & (1 << i)))
625 failed_adevs[i]->hba->ports[failed_adevs[i]->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_FRE;
627 endtime = grub_get_time_ms () + 1000;
628 while (grub_get_time_ms () < endtime)
630 for (i = 0; i < nports; i++)
631 if (failed_adevs[i] && (fr_running & (1 << i)) && (failed_adevs[i]->hba->ports[failed_adevs[i]->port].command & GRUB_AHCI_HBA_PORT_CMD_FR))
636 for (i = 0; i < nports; i++)
639 grub_dma_free (failed_adevs[i]->command_list_chunk);
640 grub_dma_free (failed_adevs[i]->command_table_chunk);
641 grub_dma_free (failed_adevs[i]->rfis);
644 for (i = 0; i < nports; i++)
645 if (adevs[i] && (adevs[i]->hba->ports[adevs[i]->port].sig >> 16) == 0xeb14)
648 addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
649 grub_pci_write_word (addr, grub_pci_read_word (addr)
650 | GRUB_PCI_COMMAND_BUS_MASTER);
652 for (i = 0; i < nports; i++)
655 grub_list_push (GRUB_AS_LIST_P (&grub_ahci_devices),
656 GRUB_AS_LIST (adevs[i]));
663 grub_ahci_initialize (void)
665 grub_pci_iterate (grub_ahci_pciinit, NULL);
670 grub_ahci_fini_hw (int noreturn __attribute__ ((unused)))
672 struct grub_ahci_device *dev;
674 for (dev = grub_ahci_devices; dev; dev = dev->next)
676 grub_uint64_t endtime;
678 dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_FRE;
679 endtime = grub_get_time_ms () + 1000;
680 while ((dev->hba->ports[dev->port].command & GRUB_AHCI_HBA_PORT_CMD_FR))
681 if (grub_get_time_ms () > endtime)
683 grub_dprintf ("ahci", "couldn't stop FR\n");
687 dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_ST;
688 endtime = grub_get_time_ms () + 1000;
689 while ((dev->hba->ports[dev->port].command & GRUB_AHCI_HBA_PORT_CMD_CR))
690 if (grub_get_time_ms () > endtime)
692 grub_dprintf ("ahci", "couldn't stop CR\n");
695 grub_dma_free (dev->command_list_chunk);
696 grub_dma_free (dev->command_table_chunk);
697 grub_dma_free (dev->rfis);
698 dev->command_list_chunk = NULL;
699 dev->command_table_chunk = NULL;
702 return GRUB_ERR_NONE;
706 reinit_port (struct grub_ahci_device *dev)
708 struct grub_pci_dma_chunk *command_list;
709 struct grub_pci_dma_chunk *command_table;
710 grub_uint64_t endtime;
712 command_list = grub_memalign_dma32 (1024, sizeof (struct grub_ahci_cmd_head));
716 command_table = grub_memalign_dma32 (1024,
717 sizeof (struct grub_ahci_cmd_table));
720 grub_dma_free (command_list);
724 grub_dprintf ("ahci", "found device ahci%d (port %d)\n", dev->num, dev->port);
726 dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_FRE;
727 endtime = grub_get_time_ms () + 1000;
728 while ((dev->hba->ports[dev->port].command & GRUB_AHCI_HBA_PORT_CMD_FR))
729 if (grub_get_time_ms () > endtime)
731 grub_dprintf ("ahci", "couldn't stop FR\n");
735 dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_ST;
736 endtime = grub_get_time_ms () + 1000;
737 while ((dev->hba->ports[dev->port].command & GRUB_AHCI_HBA_PORT_CMD_CR))
738 if (grub_get_time_ms () > endtime)
740 grub_dprintf ("ahci", "couldn't stop CR\n");
744 dev->hba->ports[dev->port].fbs = 2;
746 dev->rfis = grub_memalign_dma32 (4096,
747 sizeof (struct grub_ahci_received_fis));
748 grub_memset ((char *) grub_dma_get_virt (dev->rfis), 0,
749 sizeof (struct grub_ahci_received_fis));
750 dev->hba->ports[dev->port].fis_base = grub_dma_get_phys (dev->rfis);
751 dev->hba->ports[dev->port].command_list_base
752 = grub_dma_get_phys (command_list);
753 dev->hba->ports[dev->port].command |= GRUB_AHCI_HBA_PORT_CMD_FRE;
754 while (!(dev->hba->ports[dev->port].command & GRUB_AHCI_HBA_PORT_CMD_FR))
755 if (grub_get_time_ms () > endtime)
757 grub_dprintf ("ahci", "couldn't start FR\n");
758 dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_FRE;
761 dev->hba->ports[dev->port].command |= GRUB_AHCI_HBA_PORT_CMD_ST;
762 while (!(dev->hba->ports[dev->port].command & GRUB_AHCI_HBA_PORT_CMD_CR))
763 if (grub_get_time_ms () > endtime)
765 grub_dprintf ("ahci", "couldn't start CR\n");
766 dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_CR;
770 dev->hba->ports[dev->port].command
771 = (dev->hba->ports[dev->port].command & 0x0fffffff) | (1 << 28) | 2 | 4;
773 dev->command_list_chunk = command_list;
774 dev->command_list = grub_dma_get_virt (command_list);
775 dev->command_table_chunk = command_table;
776 dev->command_table = grub_dma_get_virt (command_table);
777 dev->command_list->command_table_base
778 = grub_dma_get_phys (command_table);
782 dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_FRE;
783 endtime = grub_get_time_ms () + 1000;
784 while ((dev->hba->ports[dev->port].command & GRUB_AHCI_HBA_PORT_CMD_FR))
785 if (grub_get_time_ms () > endtime)
787 grub_dprintf ("ahci", "couldn't stop FR\n");
791 grub_dma_free (command_list);
792 grub_dma_free (command_table);
793 grub_dma_free (dev->rfis);
798 grub_ahci_restore_hw (void)
800 struct grub_ahci_device **pdev;
802 for (pdev = &grub_ahci_devices; *pdev; pdev = &((*pdev)->next))
803 if (reinit_port (*pdev))
805 struct grub_ahci_device *odev;
807 *pdev = (*pdev)->next;
810 return GRUB_ERR_NONE;
817 grub_ahci_iterate (grub_ata_dev_iterate_hook_t hook, void *hook_data,
818 grub_disk_pull_t pull)
820 struct grub_ahci_device *dev;
822 if (pull != GRUB_DISK_PULL_NONE)
825 FOR_LIST_ELEMENTS(dev, grub_ahci_devices)
826 if (hook (GRUB_SCSI_SUBSYSTEM_AHCI, dev->num, hook_data))
834 find_free_cmd_slot (struct grub_ahci_device *dev)
837 for (i = 0; i < 32; i++)
839 if (dev->hda->ports[dev->port].command_issue & (1 << i))
841 if (dev->hda->ports[dev->port].sata_active & (1 << i))
851 GRUB_AHCI_FIS_REG_H2D = 0x27
854 static const int register_map[11] = { 3 /* Features */,
860 2 /* CMD register */,
864 10 /* LBA48 high */ };
867 grub_ahci_reset_port (struct grub_ahci_device *dev, int force)
869 grub_uint64_t endtime;
871 dev->hba->ports[dev->port].sata_error = dev->hba->ports[dev->port].sata_error;
873 if (force || (dev->hba->ports[dev->port].command_issue & 1)
874 || (dev->hba->ports[dev->port].task_file_data & 0x80))
876 struct grub_disk_ata_pass_through_parms parms2;
877 dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_ST;
878 dev->hba->ports[dev->port].command_issue = 0;
879 dev->command_list[0].config = 0;
880 dev->command_table[0].prdt[0].unused = 0;
881 dev->command_table[0].prdt[0].size = 0;
882 dev->command_table[0].prdt[0].data_base = 0;
884 endtime = grub_get_time_ms () + 1000;
885 while ((dev->hba->ports[dev->port].command & GRUB_AHCI_HBA_PORT_CMD_CR))
886 if (grub_get_time_ms () > endtime)
888 grub_dprintf ("ahci", "couldn't stop CR");
889 return grub_error (GRUB_ERR_IO, "couldn't stop CR");
891 dev->hba->ports[dev->port].command |= 8;
892 while (dev->hba->ports[dev->port].command & 8)
893 if (grub_get_time_ms () > endtime)
895 grub_dprintf ("ahci", "couldn't set CLO\n");
896 dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_FRE;
897 return grub_error (GRUB_ERR_IO, "couldn't set CLO");
900 dev->hba->ports[dev->port].command |= GRUB_AHCI_HBA_PORT_CMD_ST;
901 while (!(dev->hba->ports[dev->port].command & GRUB_AHCI_HBA_PORT_CMD_CR))
902 if (grub_get_time_ms () > endtime)
904 grub_dprintf ("ahci", "couldn't stop CR");
905 dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_ST;
906 return grub_error (GRUB_ERR_IO, "couldn't stop CR");
908 dev->hba->ports[dev->port].sata_error = dev->hba->ports[dev->port].sata_error;
909 grub_memset (&parms2, 0, sizeof (parms2));
910 parms2.taskfile.cmd = 8;
911 return grub_ahci_readwrite_real (dev, &parms2, 1, 1);
913 return GRUB_ERR_NONE;
917 grub_ahci_readwrite_real (struct grub_ahci_device *dev,
918 struct grub_disk_ata_pass_through_parms *parms,
919 int spinup, int reset)
921 struct grub_pci_dma_chunk *bufc;
922 grub_uint64_t endtime;
924 grub_err_t err = GRUB_ERR_NONE;
926 grub_dprintf ("ahci", "AHCI tfd = %x\n",
927 dev->hba->ports[dev->port].task_file_data);
930 grub_ahci_reset_port (dev, 0);
932 grub_dprintf ("ahci", "AHCI tfd = %x\n",
933 dev->hba->ports[dev->port].task_file_data);
934 dev->hba->ports[dev->port].task_file_data = 0;
935 dev->hba->ports[dev->port].command_issue = 0;
936 grub_dprintf ("ahci", "AHCI tfd = %x\n",
937 dev->hba->ports[dev->port].task_file_data);
939 dev->hba->ports[dev->port].sata_error = dev->hba->ports[dev->port].sata_error;
941 grub_dprintf("ahci", "grub_ahci_read (size=%llu, cmdsize = %llu)\n",
942 (unsigned long long) parms->size,
943 (unsigned long long) parms->cmdsize);
945 if (parms->cmdsize != 0 && parms->cmdsize != 12 && parms->cmdsize != 16)
946 return grub_error (GRUB_ERR_BUG, "incorrect ATAPI command size");
948 if (parms->size > GRUB_AHCI_PRDT_MAX_CHUNK_LENGTH)
949 return grub_error (GRUB_ERR_BUG, "too big data buffer");
952 bufc = grub_memalign_dma32 (1024, parms->size + (parms->size & 1));
954 bufc = grub_memalign_dma32 (1024, 512);
956 grub_dprintf ("ahci", "AHCI tfd = %x, CL=%p\n",
957 dev->hba->ports[dev->port].task_file_data,
959 /* FIXME: support port multipliers. */
960 dev->command_list[0].config
961 = (5 << GRUB_AHCI_CONFIG_CFIS_LENGTH_SHIFT)
962 // | GRUB_AHCI_CONFIG_CLEAR_R_OK
963 | (0 << GRUB_AHCI_CONFIG_PMP_SHIFT)
964 | ((parms->size ? 1 : 0) << GRUB_AHCI_CONFIG_PRDT_LENGTH_SHIFT)
965 | (parms->cmdsize ? GRUB_AHCI_CONFIG_ATAPI : 0)
966 | (parms->write ? GRUB_AHCI_CONFIG_WRITE : GRUB_AHCI_CONFIG_READ)
967 | (parms->taskfile.cmd == 8 ? (1 << 8) : 0);
968 grub_dprintf ("ahci", "AHCI tfd = %x\n",
969 dev->hba->ports[dev->port].task_file_data);
971 dev->command_list[0].transferred = 0;
972 dev->command_list[0].command_table_base
973 = grub_dma_get_phys (dev->command_table_chunk);
975 grub_memset ((char *) dev->command_list[0].unused, 0,
976 sizeof (dev->command_list[0].unused));
978 grub_memset ((char *) &dev->command_table[0], 0,
979 sizeof (dev->command_table[0]));
980 grub_dprintf ("ahci", "AHCI tfd = %x\n",
981 dev->hba->ports[dev->port].task_file_data);
984 grub_memcpy ((char *) dev->command_table[0].command, parms->cmd,
987 grub_dprintf ("ahci", "AHCI tfd = %x\n",
988 dev->hba->ports[dev->port].task_file_data);
990 dev->command_table[0].cfis[0] = GRUB_AHCI_FIS_REG_H2D;
991 dev->command_table[0].cfis[1] = 0x80;
992 for (i = 0; i < sizeof (parms->taskfile.raw); i++)
993 dev->command_table[0].cfis[register_map[i]] = parms->taskfile.raw[i];
995 grub_dprintf ("ahci", "cfis: %02x %02x %02x %02x %02x %02x %02x %02x\n",
996 dev->command_table[0].cfis[0], dev->command_table[0].cfis[1],
997 dev->command_table[0].cfis[2], dev->command_table[0].cfis[3],
998 dev->command_table[0].cfis[4], dev->command_table[0].cfis[5],
999 dev->command_table[0].cfis[6], dev->command_table[0].cfis[7]);
1000 grub_dprintf ("ahci", "cfis: %02x %02x %02x %02x %02x %02x %02x %02x\n",
1001 dev->command_table[0].cfis[8], dev->command_table[0].cfis[9],
1002 dev->command_table[0].cfis[10], dev->command_table[0].cfis[11],
1003 dev->command_table[0].cfis[12], dev->command_table[0].cfis[13],
1004 dev->command_table[0].cfis[14], dev->command_table[0].cfis[15]);
1006 dev->command_table[0].prdt[0].data_base = grub_dma_get_phys (bufc);
1007 dev->command_table[0].prdt[0].unused = 0;
1008 dev->command_table[0].prdt[0].size = (parms->size - 1);
1010 grub_dprintf ("ahci", "PRDT = %" PRIxGRUB_UINT64_T ", %x, %x (%"
1011 PRIuGRUB_SIZE ")\n",
1012 dev->command_table[0].prdt[0].data_base,
1013 dev->command_table[0].prdt[0].unused,
1014 dev->command_table[0].prdt[0].size,
1015 (grub_size_t) ((char *) &dev->command_table[0].prdt[0]
1016 - (char *) &dev->command_table[0]));
1019 grub_memcpy ((char *) grub_dma_get_virt (bufc), parms->buffer, parms->size);
1021 grub_dprintf ("ahci", "AHCI command scheduled\n");
1022 grub_dprintf ("ahci", "AHCI tfd = %x\n",
1023 dev->hba->ports[dev->port].task_file_data);
1024 grub_dprintf ("ahci", "AHCI inten = %x\n",
1025 dev->hba->ports[dev->port].inten);
1026 grub_dprintf ("ahci", "AHCI intstatus = %x\n",
1027 dev->hba->ports[dev->port].intstatus);
1029 dev->hba->ports[dev->port].inten = 0xffffffff;//(1 << 2) | (1 << 5);
1030 dev->hba->ports[dev->port].intstatus = 0xffffffff;//(1 << 2) | (1 << 5);
1031 grub_dprintf ("ahci", "AHCI inten = %x\n",
1032 dev->hba->ports[dev->port].inten);
1033 grub_dprintf ("ahci", "AHCI tfd = %x\n",
1034 dev->hba->ports[dev->port].task_file_data);
1035 dev->hba->ports[dev->port].sata_active = 1;
1036 dev->hba->ports[dev->port].command_issue = 1;
1037 grub_dprintf ("ahci", "AHCI sig = %x\n", dev->hba->ports[dev->port].sig);
1038 grub_dprintf ("ahci", "AHCI tfd = %x\n",
1039 dev->hba->ports[dev->port].task_file_data);
1041 endtime = grub_get_time_ms () + (spinup ? 20000 : 20000);
1042 while ((dev->hba->ports[dev->port].command_issue & 1))
1043 if (grub_get_time_ms () > endtime ||
1044 (dev->hba->ports[dev->port].intstatus & GRUB_AHCI_HBA_PORT_IS_FATAL_MASK))
1046 grub_dprintf ("ahci", "AHCI status <%x %x %x %x>\n",
1047 dev->hba->ports[dev->port].command_issue,
1048 dev->hba->ports[dev->port].sata_active,
1049 dev->hba->ports[dev->port].intstatus,
1050 dev->hba->ports[dev->port].task_file_data);
1051 dev->hba->ports[dev->port].command_issue = 0;
1052 if (dev->hba->ports[dev->port].intstatus & GRUB_AHCI_HBA_PORT_IS_FATAL_MASK)
1053 err = grub_error (GRUB_ERR_IO, "AHCI transfer error");
1055 err = grub_error (GRUB_ERR_IO, "AHCI transfer timed out");
1057 grub_ahci_reset_port (dev, 1);
1061 grub_dprintf ("ahci", "AHCI command completed <%x %x %x %x %x, %x %x>\n",
1062 dev->hba->ports[dev->port].command_issue,
1063 dev->hba->ports[dev->port].intstatus,
1064 dev->hba->ports[dev->port].task_file_data,
1065 dev->command_list[0].transferred,
1066 dev->hba->ports[dev->port].sata_error,
1067 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x00],
1068 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x18]);
1069 grub_dprintf ("ahci",
1070 "last PIO FIS %08x %08x %08x %08x %08x %08x %08x %08x\n",
1071 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x08],
1072 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x09],
1073 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0a],
1074 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0b],
1075 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0c],
1076 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0d],
1077 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0e],
1078 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0f]);
1079 grub_dprintf ("ahci",
1080 "last REG FIS %08x %08x %08x %08x %08x %08x %08x %08x\n",
1081 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x10],
1082 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x11],
1083 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x12],
1084 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x13],
1085 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x14],
1086 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x15],
1087 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x16],
1088 ((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x17]);
1091 grub_memcpy (parms->buffer, (char *) grub_dma_get_virt (bufc), parms->size);
1092 grub_dma_free (bufc);
1098 grub_ahci_readwrite (grub_ata_t disk,
1099 struct grub_disk_ata_pass_through_parms *parms,
1102 return grub_ahci_readwrite_real (disk->data, parms, spinup, 0);
1106 grub_ahci_open (int id, int devnum, struct grub_ata *ata)
1108 struct grub_ahci_device *dev;
1110 if (id != GRUB_SCSI_SUBSYSTEM_AHCI)
1111 return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "not an AHCI device");
1113 FOR_LIST_ELEMENTS(dev, grub_ahci_devices)
1114 if (dev->num == devnum)
1118 return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "no such AHCI device");
1120 grub_dprintf ("ahci", "opening AHCI dev `ahci%d'\n", dev->num);
1124 ata->atapi = dev->atapi;
1125 ata->maxbuffer = GRUB_AHCI_PRDT_MAX_CHUNK_LENGTH;
1126 ata->present = &dev->present;
1128 return GRUB_ERR_NONE;
1131 static struct grub_ata_dev grub_ahci_dev =
1133 .iterate = grub_ahci_iterate,
1134 .open = grub_ahci_open,
1135 .readwrite = grub_ahci_readwrite,
1140 static struct grub_preboot *fini_hnd;
1144 grub_stop_disk_firmware ();
1146 /* AHCI initialization. */
1147 grub_ahci_initialize ();
1149 /* AHCI devices are handled by scsi.mod. */
1150 grub_ata_dev_register (&grub_ahci_dev);
1152 fini_hnd = grub_loader_register_preboot_hook (grub_ahci_fini_hw,
1153 grub_ahci_restore_hw,
1154 GRUB_LOADER_PREBOOT_HOOK_PRIO_DISK);
1159 grub_ahci_fini_hw (0);
1160 grub_loader_unregister_preboot_hook (fini_hnd);
1162 grub_ata_dev_unregister (&grub_ahci_dev);