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Line 35... | Line 35... | ||
35 | * @brief ATA disk driver |
35 | * @brief ATA disk driver |
36 | * |
36 | * |
37 | * This driver currently works only with CHS addressing and uses PIO. |
37 | * This driver currently works only with CHS addressing and uses PIO. |
38 | * Currently based on the (now obsolete) ANSI X3.221-1994 (ATA-1) standard. |
38 | * Currently based on the (now obsolete) ANSI X3.221-1994 (ATA-1) standard. |
39 | * At this point only reading is possible, not writing. |
39 | * At this point only reading is possible, not writing. |
- | 40 | * |
|
- | 41 | * The driver services a single controller which can have up to two disks |
|
- | 42 | * attached. |
|
40 | */ |
43 | */ |
41 | 44 | ||
42 | #include <stdio.h> |
45 | #include <stdio.h> |
43 | #include <libarch/ddi.h> |
46 | #include <libarch/ddi.h> |
44 | #include <ddi.h> |
47 | #include <ddi.h> |
45 | #include <ipc/ipc.h> |
48 | #include <ipc/ipc.h> |
46 | #include <ipc/bd.h> |
49 | #include <ipc/bd.h> |
47 | #include <async.h> |
50 | #include <async.h> |
48 | #include <as.h> |
51 | #include <as.h> |
49 | #include <futex.h> |
52 | #include <fibril_sync.h> |
50 | #include <devmap.h> |
53 | #include <devmap.h> |
51 | #include <sys/types.h> |
54 | #include <sys/types.h> |
52 | #include <errno.h> |
55 | #include <errno.h> |
53 | #include <bool.h> |
56 | #include <bool.h> |
- | 57 | #include <task.h> |
|
54 | 58 | ||
55 | #include "ata_bd.h" |
59 | #include "ata_bd.h" |
56 | 60 | ||
57 | #define NAME "ata_bd" |
61 | #define NAME "ata_bd" |
58 | 62 | ||
Line 62... | Line 66... | ||
62 | static uintptr_t cmd_physical = 0x1f0; |
66 | static uintptr_t cmd_physical = 0x1f0; |
63 | static uintptr_t ctl_physical = 0x170; |
67 | static uintptr_t ctl_physical = 0x170; |
64 | static ata_cmd_t *cmd; |
68 | static ata_cmd_t *cmd; |
65 | static ata_ctl_t *ctl; |
69 | static ata_ctl_t *ctl; |
66 | 70 | ||
67 | static dev_handle_t dev_handle[MAX_DISKS]; |
71 | /** Per-disk state. */ |
68 | - | ||
69 | static atomic_t dev_futex = FUTEX_INITIALIZER; |
- | |
70 | - | ||
71 | static disk_t disk[MAX_DISKS]; |
72 | static disk_t disk[MAX_DISKS]; |
72 | 73 | ||
73 | static int ata_bd_init(void); |
74 | static int ata_bd_init(void); |
74 | static void ata_bd_connection(ipc_callid_t iid, ipc_call_t *icall); |
75 | static void ata_bd_connection(ipc_callid_t iid, ipc_call_t *icall); |
75 | static int ata_bd_rdwr(int disk_id, ipcarg_t method, off_t offset, off_t size, |
76 | static int ata_bd_rdwr(int disk_id, ipcarg_t method, off_t offset, size_t size, |
76 | void *buf); |
77 | void *buf); |
77 | static int ata_bd_read_block(int disk_id, uint64_t blk_idx, size_t blk_cnt, |
78 | static int ata_bd_read_block(int disk_id, uint64_t blk_idx, size_t blk_cnt, |
78 | void *buf); |
79 | void *buf); |
79 | static int ata_bd_write_block(int disk_id, uint64_t blk_idx, size_t blk_cnt, |
80 | static int ata_bd_write_block(int disk_id, uint64_t blk_idx, size_t blk_cnt, |
80 | const void *buf); |
81 | const void *buf); |
Line 87... | Line 88... | ||
87 | int i, rc; |
88 | int i, rc; |
88 | int n_disks; |
89 | int n_disks; |
89 | 90 | ||
90 | printf(NAME ": ATA disk driver\n"); |
91 | printf(NAME ": ATA disk driver\n"); |
91 | 92 | ||
92 | printf("cmd_physical = 0x%x\n", cmd_physical); |
93 | printf("I/O address 0x%x\n", cmd_physical); |
93 | printf("ctl_physical = 0x%x\n", ctl_physical); |
- | |
94 | 94 | ||
95 | if (ata_bd_init() != EOK) |
95 | if (ata_bd_init() != EOK) |
96 | return -1; |
96 | return -1; |
97 | 97 | ||
98 | /* Put drives to reset, disable interrupts. */ |
98 | /* Put drives to reset, disable interrupts. */ |
99 | printf("Reset drives...\n"); |
99 | printf("Reset drives... "); |
- | 100 | fflush(stdout); |
|
- | 101 | ||
100 | pio_write_8(&ctl->device_control, DCR_SRST); |
102 | pio_write_8(&ctl->device_control, DCR_SRST); |
101 | /* FIXME: Find out how to do this properly. */ |
103 | /* FIXME: Find out how to do this properly. */ |
102 | async_usleep(100); |
104 | async_usleep(100); |
103 | pio_write_8(&ctl->device_control, 0); |
105 | pio_write_8(&ctl->device_control, 0); |
104 | 106 | ||
105 | do { |
107 | do { |
106 | status = pio_read_8(&cmd->status); |
108 | status = pio_read_8(&cmd->status); |
107 | } while ((status & SR_BSY) != 0); |
109 | } while ((status & SR_BSY) != 0); |
108 | printf("Done\n"); |
110 | printf("Done\n"); |
109 | 111 | ||
110 | printf("Status = 0x%x\n", pio_read_8(&cmd->status)); |
- | |
111 | - | ||
112 | (void) drive_identify(0, &disk[0]); |
112 | (void) drive_identify(0, &disk[0]); |
113 | (void) drive_identify(1, &disk[1]); |
113 | (void) drive_identify(1, &disk[1]); |
114 | 114 | ||
115 | n_disks = 0; |
115 | n_disks = 0; |
116 | 116 | ||
Line 118... | Line 118... | ||
118 | /* Skip unattached drives. */ |
118 | /* Skip unattached drives. */ |
119 | if (disk[i].present == false) |
119 | if (disk[i].present == false) |
120 | continue; |
120 | continue; |
121 | 121 | ||
122 | snprintf(name, 16, "disk%d", i); |
122 | snprintf(name, 16, "disk%d", i); |
123 | rc = devmap_device_register(name, &dev_handle[i]); |
123 | rc = devmap_device_register(name, &disk[i].dev_handle); |
124 | if (rc != EOK) { |
124 | if (rc != EOK) { |
125 | devmap_hangup_phone(DEVMAP_DRIVER); |
125 | devmap_hangup_phone(DEVMAP_DRIVER); |
126 | printf(NAME ": Unable to register device %s.\n", |
126 | printf(NAME ": Unable to register device %s.\n", |
127 | name); |
127 | name); |
128 | return rc; |
128 | return rc; |
Line 134... | Line 134... | ||
134 | printf("No disks detected.\n"); |
134 | printf("No disks detected.\n"); |
135 | return -1; |
135 | return -1; |
136 | } |
136 | } |
137 | 137 | ||
138 | printf(NAME ": Accepting connections\n"); |
138 | printf(NAME ": Accepting connections\n"); |
- | 139 | task_retval(0); |
|
139 | async_manager(); |
140 | async_manager(); |
140 | 141 | ||
141 | /* Not reached */ |
142 | /* Not reached */ |
142 | return 0; |
143 | return 0; |
143 | } |
144 | } |
144 | 145 | ||
145 | static int drive_identify(int disk_id, disk_t *d) |
146 | static int drive_identify(int disk_id, disk_t *d) |
146 | { |
147 | { |
147 | uint16_t data; |
148 | uint16_t data; |
148 | uint8_t status; |
149 | uint8_t status; |
149 | int i; |
150 | size_t i; |
- | 151 | ||
- | 152 | printf("Identify drive %d... ", disk_id); |
|
- | 153 | fflush(stdout); |
|
150 | 154 | ||
151 | printf("Identify drive %d\n", disk_id); |
- | |
152 | pio_write_8(&cmd->drive_head, ((disk_id != 0) ? DHR_DRV : 0)); |
155 | pio_write_8(&cmd->drive_head, ((disk_id != 0) ? DHR_DRV : 0)); |
153 | async_usleep(100); |
156 | async_usleep(100); |
154 | pio_write_8(&cmd->command, CMD_IDENTIFY_DRIVE); |
157 | pio_write_8(&cmd->command, CMD_IDENTIFY_DRIVE); |
155 | 158 | ||
156 | status = pio_read_8(&cmd->status); |
159 | status = pio_read_8(&cmd->status); |
157 | printf("Status = 0x%x\n", status); |
- | |
158 | 160 | ||
159 | d->present = false; |
161 | d->present = false; |
160 | 162 | ||
161 | /* |
163 | /* |
162 | * Detect if drive is present. This is Qemu only! Need to |
164 | * Detect if drive is present. This is Qemu only! Need to |
Line 179... | Line 181... | ||
179 | case 3: d->heads = data; break; |
181 | case 3: d->heads = data; break; |
180 | case 6: d->sectors = data; break; |
182 | case 6: d->sectors = data; break; |
181 | } |
183 | } |
182 | } |
184 | } |
183 | 185 | ||
184 | printf("\n\nStatus = 0x%x\n", pio_read_8(&cmd->status)); |
- | |
185 | - | ||
186 | d->blocks = d->cylinders * d->heads * d->sectors; |
186 | d->blocks = d->cylinders * d->heads * d->sectors; |
187 | 187 | ||
188 | printf("Geometry: %u cylinders, %u heads, %u sectors\n", |
188 | printf("Geometry: %u cylinders, %u heads, %u sectors\n", |
189 | d->cylinders, d->heads, d->sectors); |
189 | d->cylinders, d->heads, d->sectors); |
190 | 190 | ||
191 | d->present = true; |
191 | d->present = true; |
- | 192 | fibril_mutex_initialize(&d->lock); |
|
192 | 193 | ||
193 | return EOK; |
194 | return EOK; |
194 | } |
195 | } |
195 | 196 | ||
196 | static int ata_bd_init(void) |
197 | static int ata_bd_init(void) |
Line 232... | Line 233... | ||
232 | ipcarg_t method; |
233 | ipcarg_t method; |
233 | dev_handle_t dh; |
234 | dev_handle_t dh; |
234 | int flags; |
235 | int flags; |
235 | int retval; |
236 | int retval; |
236 | off_t idx; |
237 | off_t idx; |
237 | off_t size; |
238 | size_t size; |
238 | int disk_id, i; |
239 | int disk_id, i; |
239 | 240 | ||
240 | /* Get the device handle. */ |
241 | /* Get the device handle. */ |
241 | dh = IPC_GET_ARG1(*icall); |
242 | dh = IPC_GET_ARG1(*icall); |
242 | 243 | ||
243 | /* Determine which disk device is the client connecting to. */ |
244 | /* Determine which disk device is the client connecting to. */ |
244 | disk_id = -1; |
245 | disk_id = -1; |
245 | for (i = 0; i < MAX_DISKS; i++) |
246 | for (i = 0; i < MAX_DISKS; i++) |
246 | if (dev_handle[i] == dh) |
247 | if (disk[i].dev_handle == dh) |
247 | disk_id = i; |
248 | disk_id = i; |
248 | 249 | ||
249 | if (disk_id < 0 || disk[disk_id].present == false) { |
250 | if (disk_id < 0 || disk[disk_id].present == false) { |
250 | ipc_answer_0(iid, EINVAL); |
251 | ipc_answer_0(iid, EINVAL); |
251 | return; |
252 | return; |
Line 292... | Line 293... | ||
292 | } |
293 | } |
293 | ipc_answer_0(callid, retval); |
294 | ipc_answer_0(callid, retval); |
294 | } |
295 | } |
295 | } |
296 | } |
296 | 297 | ||
297 | static int ata_bd_rdwr(int disk_id, ipcarg_t method, off_t blk_idx, off_t size, |
298 | static int ata_bd_rdwr(int disk_id, ipcarg_t method, off_t blk_idx, size_t size, |
298 | void *buf) |
299 | void *buf) |
299 | { |
300 | { |
300 | int rc; |
301 | int rc; |
301 | off_t now; |
302 | size_t now; |
302 | 303 | ||
303 | while (size > 0) { |
304 | while (size > 0) { |
304 | now = size < block_size ? size : (off_t) block_size; |
305 | now = size < block_size ? size : block_size; |
305 | if (now != block_size) |
306 | if (now != block_size) |
306 | return EINVAL; |
307 | return EINVAL; |
307 | 308 | ||
308 | if (method == BD_READ_BLOCK) |
309 | if (method == BD_READ_BLOCK) |
309 | rc = ata_bd_read_block(disk_id, blk_idx, 1, buf); |
310 | rc = ata_bd_read_block(disk_id, blk_idx, 1, buf); |
Line 353... | Line 354... | ||
353 | /* New value for Drive/Head register */ |
354 | /* New value for Drive/Head register */ |
354 | drv_head = |
355 | drv_head = |
355 | ((disk_id != 0) ? DHR_DRV : 0) | |
356 | ((disk_id != 0) ? DHR_DRV : 0) | |
356 | (h & 0x0f); |
357 | (h & 0x0f); |
357 | 358 | ||
358 | futex_down(&dev_futex); |
359 | fibril_mutex_lock(&d->lock); |
359 | 360 | ||
360 | /* Program a Read Sectors operation. */ |
361 | /* Program a Read Sectors operation. */ |
361 | 362 | ||
362 | pio_write_8(&cmd->drive_head, drv_head); |
363 | pio_write_8(&cmd->drive_head, drv_head); |
363 | pio_write_8(&cmd->sector_count, 1); |
364 | pio_write_8(&cmd->sector_count, 1); |
Line 375... | Line 376... | ||
375 | 376 | ||
376 | data = pio_read_16(&cmd->data_port); |
377 | data = pio_read_16(&cmd->data_port); |
377 | ((uint16_t *) buf)[i] = data; |
378 | ((uint16_t *) buf)[i] = data; |
378 | } |
379 | } |
379 | 380 | ||
380 | futex_up(&dev_futex); |
381 | fibril_mutex_unlock(&d->lock); |
381 | return EOK; |
382 | return EOK; |
382 | } |
383 | } |
383 | 384 | ||
384 | static int ata_bd_write_block(int disk_id, uint64_t blk_idx, size_t blk_cnt, |
385 | static int ata_bd_write_block(int disk_id, uint64_t blk_idx, size_t blk_cnt, |
385 | const void *buf) |
386 | const void *buf) |
Line 407... | Line 408... | ||
407 | /* New value for Drive/Head register */ |
408 | /* New value for Drive/Head register */ |
408 | drv_head = |
409 | drv_head = |
409 | ((disk_id != 0) ? DHR_DRV : 0) | |
410 | ((disk_id != 0) ? DHR_DRV : 0) | |
410 | (h & 0x0f); |
411 | (h & 0x0f); |
411 | 412 | ||
412 | futex_down(&dev_futex); |
413 | fibril_mutex_lock(&d->lock); |
413 | 414 | ||
414 | /* Program a Read Sectors operation. */ |
415 | /* Program a Read Sectors operation. */ |
415 | 416 | ||
416 | pio_write_8(&cmd->drive_head, drv_head); |
417 | pio_write_8(&cmd->drive_head, drv_head); |
417 | pio_write_8(&cmd->sector_count, 1); |
418 | pio_write_8(&cmd->sector_count, 1); |
Line 428... | Line 429... | ||
428 | } while ((status & SR_DRDY) == 0); |
429 | } while ((status & SR_DRDY) == 0); |
429 | 430 | ||
430 | pio_write_16(&cmd->data_port, ((uint16_t *) buf)[i]); |
431 | pio_write_16(&cmd->data_port, ((uint16_t *) buf)[i]); |
431 | } |
432 | } |
432 | 433 | ||
433 | futex_up(&dev_futex); |
434 | fibril_mutex_unlock(&d->lock); |
434 | return EOK; |
435 | return EOK; |
435 | } |
436 | } |
436 | 437 | ||
437 | 438 | ||
438 | /** |
439 | /** |