37,6 → 37,9 |
* This driver currently works only with CHS addressing and uses PIO. |
* Currently based on the (now obsolete) ANSI X3.221-1994 (ATA-1) standard. |
* At this point only reading is possible, not writing. |
* |
* The driver services a single controller which can have up to two disks |
* attached. |
*/ |
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#include <stdio.h> |
46,11 → 49,12 |
#include <ipc/bd.h> |
#include <async.h> |
#include <as.h> |
#include <futex.h> |
#include <fibril_sync.h> |
#include <devmap.h> |
#include <sys/types.h> |
#include <errno.h> |
#include <bool.h> |
#include <task.h> |
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#include "ata_bd.h" |
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64,15 → 68,12 |
static ata_cmd_t *cmd; |
static ata_ctl_t *ctl; |
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static dev_handle_t dev_handle[MAX_DISKS]; |
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static atomic_t dev_futex = FUTEX_INITIALIZER; |
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/** Per-disk state. */ |
static disk_t disk[MAX_DISKS]; |
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static int ata_bd_init(void); |
static void ata_bd_connection(ipc_callid_t iid, ipc_call_t *icall); |
static int ata_bd_rdwr(int disk_id, ipcarg_t method, off_t offset, off_t size, |
static int ata_bd_rdwr(int disk_id, ipcarg_t method, off_t offset, size_t size, |
void *buf); |
static int ata_bd_read_block(int disk_id, uint64_t blk_idx, size_t blk_cnt, |
void *buf); |
89,14 → 90,15 |
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printf(NAME ": ATA disk driver\n"); |
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printf("cmd_physical = 0x%x\n", cmd_physical); |
printf("ctl_physical = 0x%x\n", ctl_physical); |
printf("I/O address 0x%x\n", cmd_physical); |
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if (ata_bd_init() != EOK) |
return -1; |
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/* Put drives to reset, disable interrupts. */ |
printf("Reset drives...\n"); |
printf("Reset drives... "); |
fflush(stdout); |
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pio_write_8(&ctl->device_control, DCR_SRST); |
/* FIXME: Find out how to do this properly. */ |
async_usleep(100); |
107,8 → 109,6 |
} while ((status & SR_BSY) != 0); |
printf("Done\n"); |
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printf("Status = 0x%x\n", pio_read_8(&cmd->status)); |
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(void) drive_identify(0, &disk[0]); |
(void) drive_identify(1, &disk[1]); |
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120,7 → 120,7 |
continue; |
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snprintf(name, 16, "disk%d", i); |
rc = devmap_device_register(name, &dev_handle[i]); |
rc = devmap_device_register(name, &disk[i].dev_handle); |
if (rc != EOK) { |
devmap_hangup_phone(DEVMAP_DRIVER); |
printf(NAME ": Unable to register device %s.\n", |
136,6 → 136,7 |
} |
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printf(NAME ": Accepting connections\n"); |
task_retval(0); |
async_manager(); |
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/* Not reached */ |
146,15 → 147,16 |
{ |
uint16_t data; |
uint8_t status; |
int i; |
size_t i; |
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printf("Identify drive %d\n", disk_id); |
printf("Identify drive %d... ", disk_id); |
fflush(stdout); |
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pio_write_8(&cmd->drive_head, ((disk_id != 0) ? DHR_DRV : 0)); |
async_usleep(100); |
pio_write_8(&cmd->command, CMD_IDENTIFY_DRIVE); |
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status = pio_read_8(&cmd->status); |
printf("Status = 0x%x\n", status); |
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d->present = false; |
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181,8 → 183,6 |
} |
} |
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printf("\n\nStatus = 0x%x\n", pio_read_8(&cmd->status)); |
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d->blocks = d->cylinders * d->heads * d->sectors; |
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printf("Geometry: %u cylinders, %u heads, %u sectors\n", |
189,6 → 189,7 |
d->cylinders, d->heads, d->sectors); |
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d->present = true; |
fibril_mutex_initialize(&d->lock); |
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return EOK; |
} |
234,7 → 235,7 |
int flags; |
int retval; |
off_t idx; |
off_t size; |
size_t size; |
int disk_id, i; |
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/* Get the device handle. */ |
243,7 → 244,7 |
/* Determine which disk device is the client connecting to. */ |
disk_id = -1; |
for (i = 0; i < MAX_DISKS; i++) |
if (dev_handle[i] == dh) |
if (disk[i].dev_handle == dh) |
disk_id = i; |
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if (disk_id < 0 || disk[disk_id].present == false) { |
294,14 → 295,14 |
} |
} |
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static int ata_bd_rdwr(int disk_id, ipcarg_t method, off_t blk_idx, off_t size, |
static int ata_bd_rdwr(int disk_id, ipcarg_t method, off_t blk_idx, size_t size, |
void *buf) |
{ |
int rc; |
off_t now; |
size_t now; |
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while (size > 0) { |
now = size < block_size ? size : (off_t) block_size; |
now = size < block_size ? size : block_size; |
if (now != block_size) |
return EINVAL; |
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355,7 → 356,7 |
((disk_id != 0) ? DHR_DRV : 0) | |
(h & 0x0f); |
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futex_down(&dev_futex); |
fibril_mutex_lock(&d->lock); |
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/* Program a Read Sectors operation. */ |
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377,7 → 378,7 |
((uint16_t *) buf)[i] = data; |
} |
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futex_up(&dev_futex); |
fibril_mutex_unlock(&d->lock); |
return EOK; |
} |
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409,7 → 410,7 |
((disk_id != 0) ? DHR_DRV : 0) | |
(h & 0x0f); |
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futex_down(&dev_futex); |
fibril_mutex_lock(&d->lock); |
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/* Program a Read Sectors operation. */ |
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430,7 → 431,7 |
pio_write_16(&cmd->data_port, ((uint16_t *) buf)[i]); |
} |
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futex_up(&dev_futex); |
fibril_mutex_unlock(&d->lock); |
return EOK; |
} |
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