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working AHCI (at last)

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-12-25 03:06:07 +01:00
parent 51f7e1acb7
commit 060d0c7ac2
1 changed files with 152 additions and 30 deletions
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182
grub-core/disk/ahci.c
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@ -44,8 +44,8 @@ struct grub_ahci_prdt_entry
struct grub_ahci_cmd_table
{
grub_uint8_t cfis[0x40];
grub_uint8_t command[16];
grub_uint32_t reserved[0xc];
grub_uint8_t command[0x10];
grub_uint8_t reserved[0x30];
struct grub_ahci_prdt_entry prdt[1];
};
@ -56,14 +56,27 @@ struct grub_ahci_hba_port
grub_uint32_t intstatus;
grub_uint32_t inten;
grub_uint32_t command;
grub_uint32_t unused1[3];
grub_uint32_t unused1;
grub_uint32_t task_file_data;
grub_uint32_t sig;
grub_uint32_t status;
grub_uint32_t unused2[2];
grub_uint32_t unused2;
grub_uint32_t sata_error;
grub_uint32_t sata_active;
grub_uint32_t command_issue;
grub_uint32_t unused3[17];
grub_uint32_t unused3;
grub_uint32_t fbs;
grub_uint32_t unused4[15];
};
enum grub_ahci_hba_port_command
{
GRUB_AHCI_HBA_PORT_CMD_ST = 0x01,
GRUB_AHCI_HBA_PORT_CMD_FRE = 0x10,
GRUB_AHCI_HBA_PORT_CMD_CR = 0x8000,
GRUB_AHCI_HBA_PORT_CMD_FR = 0x4000,
};
struct grub_ahci_hba
{
grub_uint32_t cap;
@ -76,6 +89,11 @@ struct grub_ahci_hba
struct grub_ahci_hba_port ports[32];
};
struct grub_ahci_received_fis
{
char raw[4096];
};
enum
{
GRUB_AHCI_HBA_CAP_NPORTS_MASK = 0x1f
@ -83,6 +101,7 @@ enum
enum
{
GRUB_AHCI_HBA_GLOBAL_CONTROL_RESET = 0x00000001,
GRUB_AHCI_HBA_GLOBAL_CONTROL_INTR_EN = 0x00000002,
GRUB_AHCI_HBA_GLOBAL_CONTROL_AHCI_EN = 0x80000000,
};
@ -106,8 +125,14 @@ struct grub_ahci_device
volatile struct grub_ahci_cmd_head *command_list;
struct grub_pci_dma_chunk *command_table_chunk;
volatile struct grub_ahci_cmd_table *command_table;
struct grub_pci_dma_chunk *rfis;
};
static grub_err_t
grub_ahci_readwrite_real (struct grub_ahci_device *dev,
struct grub_disk_ata_pass_through_parms *parms);
enum
{
GRUB_AHCI_CONFIG_READ = 0,
@ -160,10 +185,6 @@ grub_ahci_pciinit (grub_pci_device_t dev,
hba = grub_pci_device_map_range (dev, bar & GRUB_PCI_ADDR_MEM_MASK,
sizeof (hba));
hba->global_control |= GRUB_AHCI_HBA_GLOBAL_CONTROL_AHCI_EN;
nports = (hba->cap & GRUB_AHCI_HBA_CAP_NPORTS_MASK) + 1;
if (! (hba->bios_handoff & GRUB_AHCI_BIOS_HANDOFF_OS_OWNED))
{
grub_uint64_t endtime;
@ -186,6 +207,11 @@ grub_ahci_pciinit (grub_pci_device_t dev,
}
else
grub_dprintf ("ahci", "AHCI is already in OS mode\n");
hba->global_control |= GRUB_AHCI_HBA_GLOBAL_CONTROL_AHCI_EN;
nports = (hba->cap & GRUB_AHCI_HBA_CAP_NPORTS_MASK) + 1;
grub_dprintf ("ahci", "%d AHCI ports\n", nports);
for (i = 0; i < nports; i++)
@ -197,8 +223,9 @@ grub_ahci_pciinit (grub_pci_device_t dev,
if (!(hba->ports_implemented & (1 << i)))
continue;
grub_dprintf ("ahci", "status %d:%x\n", i, hba->ports[i].status);
/* FIXME: support hotplugging. */
if (!hba->ports[i].status)
if ((hba->ports[i].status & 0xf) != 0x3)
continue;
command_list = grub_memalign_dma32 (1024,
@ -224,6 +251,26 @@ grub_ahci_pciinit (grub_pci_device_t dev,
grub_dprintf ("ahci", "found device ahci%d (port %d)\n", numdevs, i);
hba->ports[i].command &= ~GRUB_AHCI_HBA_PORT_CMD_FRE;
while ((hba->ports[i].command & GRUB_AHCI_HBA_PORT_CMD_FR));
hba->ports[i].command &= ~GRUB_AHCI_HBA_PORT_CMD_ST;
while ((hba->ports[i].command & GRUB_AHCI_HBA_PORT_CMD_CR));
hba->ports[i].fbs = 2;
adev->rfis = grub_memalign_dma32 (4096,
sizeof (struct grub_ahci_received_fis));
grub_memset ((char *) grub_dma_get_virt (adev->rfis), 0,
sizeof (struct grub_ahci_received_fis));
hba->ports[i].fis_base = grub_dma_get_phys (adev->rfis);
hba->ports[i].command |= GRUB_AHCI_HBA_PORT_CMD_FRE;
while (!(hba->ports[i].command & GRUB_AHCI_HBA_PORT_CMD_FR));
hba->ports[i].command |= GRUB_AHCI_HBA_PORT_CMD_ST;
while (!(hba->ports[i].command & GRUB_AHCI_HBA_PORT_CMD_CR));
hba->ports[i].command = (hba->ports[i].command & 0x0fffffff)
| (1 << 28) | 2 | 4;
adev->hba = hba;
adev->port = i;
adev->num = numdevs++;
@ -299,13 +346,26 @@ static const int register_map[11] = { 3 /* Features */,
10 /* LBA48 high */ };
static grub_err_t
grub_ahci_readwrite (grub_ata_t disk,
struct grub_disk_ata_pass_through_parms *parms)
grub_ahci_readwrite_real (struct grub_ahci_device *dev,
struct grub_disk_ata_pass_through_parms *parms)
{
struct grub_ahci_device *dev = (struct grub_ahci_device *) disk->data;
struct grub_pci_dma_chunk *bufc;
grub_uint64_t endtime;
unsigned i;
grub_err_t err = GRUB_ERR_NONE;
grub_dprintf ("ahci", "AHCI tfd = %x\n",
dev->hba->ports[dev->port].task_file_data);
if ((dev->hba->ports[dev->port].task_file_data & 0x80))
{
dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_ST;
while ((dev->hba->ports[dev->port].command & GRUB_AHCI_HBA_PORT_CMD_CR));
dev->hba->ports[dev->port].command |= GRUB_AHCI_HBA_PORT_CMD_ST;
while (!(dev->hba->ports[dev->port].command & GRUB_AHCI_HBA_PORT_CMD_CR));
}
dev->hba->ports[dev->port].sata_error = dev->hba->ports[dev->port].sata_error;
grub_dprintf("ahci", "grub_ahci_read (size=%llu, cmdsize = %llu)\n",
(unsigned long long) parms->size,
@ -319,14 +379,19 @@ grub_ahci_readwrite (grub_ata_t disk,
bufc = grub_memalign_dma32 (1024, parms->size + (parms->size & 1));
dev->hba->ports[dev->port].command |= 8;
grub_dprintf ("ahci", "AHCI tfd = %x\n",
dev->hba->ports[dev->port].task_file_data);
/* FIXME: support port multipliers. */
dev->command_list[0].config
= (4 << GRUB_AHCI_CONFIG_CFIS_LENGTH_SHIFT)
| GRUB_AHCI_CONFIG_CLEAR_R_OK
= (5 << GRUB_AHCI_CONFIG_CFIS_LENGTH_SHIFT)
// | GRUB_AHCI_CONFIG_CLEAR_R_OK
| (0 << GRUB_AHCI_CONFIG_PMP_SHIFT)
| (1 << GRUB_AHCI_CONFIG_PRDT_LENGTH_SHIFT)
| (parms->cmdsize ? GRUB_AHCI_CONFIG_ATAPI : 0)
| (parms->write ? GRUB_AHCI_CONFIG_WRITE : GRUB_AHCI_CONFIG_READ);
| (parms->write ? GRUB_AHCI_CONFIG_WRITE : GRUB_AHCI_CONFIG_READ)
| (parms->taskfile.cmd == 8 ? (1 << 8) : 0);
dev->command_list[0].transfered = 0;
dev->command_list[0].command_table_base
= grub_dma_get_phys (dev->command_table_chunk);
@ -344,40 +409,97 @@ grub_ahci_readwrite (grub_ata_t disk,
dev->command_table[0].cfis[register_map[i]] = parms->taskfile.raw[i];
dev->command_table[0].cfis[7] |= (parms->cmdsize ? 0 : 0xE0);
grub_dprintf ("ahci", "cfis: %02x %02x %02x %02x %02x %02x %02x %02x\n",
dev->command_table[0].cfis[0], dev->command_table[0].cfis[1],
dev->command_table[0].cfis[2], dev->command_table[0].cfis[3],
dev->command_table[0].cfis[4], dev->command_table[0].cfis[5],
dev->command_table[0].cfis[6], dev->command_table[0].cfis[7]);
grub_dprintf ("ahci", "cfis: %02x %02x %02x %02x %02x %02x %02x %02x\n",
dev->command_table[0].cfis[8], dev->command_table[0].cfis[9],
dev->command_table[0].cfis[10], dev->command_table[0].cfis[11],
dev->command_table[0].cfis[12], dev->command_table[0].cfis[13],
dev->command_table[0].cfis[14], dev->command_table[0].cfis[15]);
dev->command_table[0].prdt[0].data_base = grub_dma_get_phys (bufc);
dev->command_table[0].prdt[0].unused = 0;
dev->command_table[0].prdt[0].size = (parms->size + (parms->size & 1) - 1)
| GRUB_AHCI_INTERRUPT_ON_COMPLETE;
grub_dprintf ("ahci", "PRDT = %" PRIxGRUB_UINT64_T ", %x, %x (%x)\n",
dev->command_table[0].prdt[0].data_base,
dev->command_table[0].prdt[0].unused,
dev->command_table[0].prdt[0].size,
(char *) &dev->command_table[0].prdt[0]
- (char *) &dev->command_table[0]);
if (parms->write)
grub_memcpy ((char *) grub_dma_get_virt (bufc), parms->buffer, parms->size);
grub_dprintf ("ahci", "AHCI command schedulded\n");
dev->hba->ports[dev->port].inten = (1 << 2) | (1 << 5);
dev->hba->ports[dev->port].intstatus = (1 << 2) | (1 << 5);
grub_dprintf ("ahci", "AHCI tfd = %x\n",
dev->hba->ports[dev->port].task_file_data);
dev->hba->ports[dev->port].inten = 0xffffffff;//(1 << 2) | (1 << 5);
dev->hba->ports[dev->port].intstatus = 0xffffffff;//(1 << 2) | (1 << 5);
grub_dprintf ("ahci", "AHCI tfd = %x\n",
dev->hba->ports[dev->port].task_file_data);
dev->hba->ports[dev->port].command_issue |= 1;
dev->hba->ports[dev->port].command |= 1;
grub_dprintf ("ahci", "AHCI sig = %x\n", dev->hba->ports[dev->port].sig);
grub_dprintf ("ahci", "AHCI tfd = %x\n",
dev->hba->ports[dev->port].task_file_data);
endtime = grub_get_time_ms () + 1000;
while (!(dev->hba->ports[dev->port].intstatus & (1 << 5)))
while ((dev->hba->ports[dev->port].command_issue & 1))
if (grub_get_time_ms () > endtime)
{
grub_dprintf ("ahci", "AHCI timeout\n");
dev->hba->ports[dev->port].command &= ~1;
/* FIXME: free resources. */
return grub_error (GRUB_ERR_IO, "AHCI transfer timeouted");
grub_dprintf ("ahci", "AHCI status <%x %x %x>\n",
dev->hba->ports[dev->port].command_issue,
dev->hba->ports[dev->port].intstatus,
dev->hba->ports[dev->port].task_file_data);
err = grub_error (GRUB_ERR_IO, "AHCI transfer timeouted");
break;
}
grub_dprintf ("ahci", "AHCI command completed succesfully\n");
dev->hba->ports[dev->port].command &= ~1;
dev->hba->ports[dev->port].command_issue &= ~1;
grub_dprintf ("ahci", "AHCI command completed <%x %x %x %x %x, %x %x>\n",
dev->hba->ports[dev->port].command_issue,
dev->hba->ports[dev->port].intstatus,
dev->hba->ports[dev->port].task_file_data,
dev->command_list[0].transfered,
dev->hba->ports[dev->port].sata_error,
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x00],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x18]);
grub_dprintf ("ahci",
"last PIO FIS %08x %08x %08x %08x %08x %08x %08x %08x\n",
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x08],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x09],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0a],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0b],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0c],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0d],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0e],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x0f]);
grub_dprintf ("ahci",
"last REG FIS %08x %08x %08x %08x %08x %08x %08x %08x\n",
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x10],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x11],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x12],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x13],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x14],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x15],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x16],
((grub_uint32_t *) grub_dma_get_virt (dev->rfis))[0x17]);
if (!parms->write)
grub_memcpy (parms->buffer, (char *) grub_dma_get_virt (bufc), parms->size);
grub_dma_free (bufc);
return GRUB_ERR_NONE;
return err;
}
static grub_err_t
grub_ahci_readwrite (grub_ata_t disk,
struct grub_disk_ata_pass_through_parms *parms)
{
return grub_ahci_readwrite_real (disk->data, parms);
}
static grub_err_t
@ -415,8 +537,8 @@ static struct grub_ata_dev grub_ahci_dev =
GRUB_MOD_INIT(ahci)
{
/* To prevent two drivers operating on the same disks. */
// grub_disk_firmware_is_tainted = 1;
if (0 && grub_disk_firmware_fini)
grub_disk_firmware_is_tainted = 1;
if (grub_disk_firmware_fini)
{
grub_disk_firmware_fini ();
grub_disk_firmware_fini = NULL;