1 /* ps2esdi driver based on assembler code by Arindam Banerji,
2 written by Peter De Schrijver */
3 /* Reassuring note to IBM : This driver was NOT developed by vice-versa
4 engineering the PS/2's BIOS */
5 /* Dedicated to Wannes, Tofke, Ykke, Godot, Killroy and all those
6 other lovely fish out there... */
7 /* This code was written during the long and boring WINA
9 /* Thanks to Arindam Banerij for giving me the source of his driver */
10 /* This code may be freely distributed and modified in any way,
11 as long as these notes remain intact */
13 /* Revised: 05/07/94 by Arindam Banerji (axb@cse.nd.edu) */
14 /* Revised: 09/08/94 by Peter De Schrijver (stud11@cc4.kuleuven.ac.be)
15 Thanks to Arindam Banerij for sending me the docs of the adapter */
17 /* BA Modified for ThinkPad 720 by Boris Ashkinazi */
18 /* (bash@vnet.ibm.com) 08/08/95 */
20 /* Modified further for ThinkPad-720C by Uri Blumenthal */
21 /* (uri@watson.ibm.com) Sep 11, 1995 */
27 + reset after read/write error
30 #define DEVICE_NAME "PS/2 ESDI"
32 #include <linux/config.h>
33 #include <linux/major.h>
34 #include <linux/errno.h>
35 #include <linux/wait.h>
36 #include <linux/interrupt.h>
38 #include <linux/kernel.h>
39 #include <linux/genhd.h>
40 #include <linux/ps2esdi.h>
41 #include <linux/blkdev.h>
42 #include <linux/mca-legacy.h>
43 #include <linux/init.h>
44 #include <linux/ioport.h>
45 #include <linux/module.h>
47 #include <asm/system.h>
50 #include <asm/mca_dma.h>
51 #include <asm/uaccess.h>
53 #define PS2ESDI_IRQ 14
56 #define MAX_16BIT 65536
57 #define ESDI_TIMEOUT 0xf000
58 #define ESDI_STAT_TIMEOUT 4
60 #define TYPE_0_CMD_BLK_LENGTH 2
61 #define TYPE_1_CMD_BLK_LENGTH 4
63 static void reset_ctrl(void);
65 static int ps2esdi_geninit(void);
67 static void do_ps2esdi_request(request_queue_t * q);
69 static void ps2esdi_readwrite(int cmd, struct request *req);
71 static void ps2esdi_fill_cmd_block(u_short * cmd_blk, u_short cmd,
72 u_short cyl, u_short head, u_short sector, u_short length, u_char drive);
74 static int ps2esdi_out_cmd_blk(u_short * cmd_blk);
76 static void ps2esdi_prep_dma(char *buffer, u_short length, u_char dma_xmode);
78 static irqreturn_t ps2esdi_interrupt_handler(int irq, void *dev_id,
79 struct pt_regs *regs);
80 static void (*current_int_handler) (u_int) = NULL;
81 static void ps2esdi_normal_interrupt_handler(u_int);
82 static void ps2esdi_initial_reset_int_handler(u_int);
83 static void ps2esdi_geometry_int_handler(u_int);
84 static int ps2esdi_ioctl(struct inode *inode, struct file *file,
85 u_int cmd, u_long arg);
87 static int ps2esdi_read_status_words(int num_words, int max_words, u_short * buffer);
89 static void dump_cmd_complete_status(u_int int_ret_code);
91 static void ps2esdi_get_device_cfg(void);
93 static void ps2esdi_reset_timer(unsigned long unused);
95 static u_int dma_arb_level; /* DMA arbitration level */
97 static DECLARE_WAIT_QUEUE_HEAD(ps2esdi_int);
99 static int no_int_yet;
100 static int ps2esdi_drives;
101 static u_short io_base;
102 static DEFINE_TIMER(esdi_timer, ps2esdi_reset_timer, 0, 0);
103 static int reset_status;
104 static int ps2esdi_slot = -1;
105 static int tp720esdi = 0; /* Is it Integrated ESDI of ThinkPad-720? */
106 static int intg_esdi = 0; /* If integrated adapter */
107 struct ps2esdi_i_struct {
108 unsigned int head, sect, cyl, wpcom, lzone, ctl;
110 static DEFINE_SPINLOCK(ps2esdi_lock);
111 static struct request_queue *ps2esdi_queue;
112 static struct request *current_req;
115 #if 0 /* try both - I don't know which one is better... UB */
116 static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] =
118 {4, 48, 1553, 0, 0, 0},
121 static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] =
123 {64, 32, 161, 0, 0, 0},
127 static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] =
132 static struct block_device_operations ps2esdi_fops =
134 .owner = THIS_MODULE,
135 .ioctl = ps2esdi_ioctl,
138 static struct gendisk *ps2esdi_gendisk[2];
140 /* initialization routine called by ll_rw_blk.c */
141 static int __init ps2esdi_init(void)
146 /* register the device - pass the name and major number */
147 if (register_blkdev(PS2ESDI_MAJOR, "ed"))
150 /* set up some global information - indicating device specific info */
151 ps2esdi_queue = blk_init_queue(do_ps2esdi_request, &ps2esdi_lock);
152 if (!ps2esdi_queue) {
153 unregister_blkdev(PS2ESDI_MAJOR, "ed");
157 /* some minor housekeeping - setup the global gendisk structure */
158 error = ps2esdi_geninit();
160 printk(KERN_WARNING "PS2ESDI: error initialising"
161 " device, releasing resources\n");
162 unregister_blkdev(PS2ESDI_MAJOR, "ed");
163 blk_cleanup_queue(ps2esdi_queue);
171 module_init(ps2esdi_init);
175 static int cyl[MAX_HD] = {-1,-1};
176 static int head[MAX_HD] = {-1, -1};
177 static int sect[MAX_HD] = {-1, -1};
179 module_param(tp720esdi, bool, 0);
180 module_param_array(cyl, int, NULL, 0);
181 module_param_array(head, int, NULL, 0);
182 module_param_array(sect, int, NULL, 0);
183 MODULE_LICENSE("GPL");
185 int init_module(void) {
188 for(drive = 0; drive < MAX_HD; drive++) {
189 struct ps2esdi_i_struct *info = &ps2esdi_info[drive];
191 if (cyl[drive] != -1) {
192 info->cyl = info->lzone = cyl[drive];
195 if (head[drive] != -1) {
196 info->head = head[drive];
197 info->ctl = (head[drive] > 8 ? 8 : 0);
199 if (sect[drive] != -1) info->sect = sect[drive];
201 return ps2esdi_init();
205 cleanup_module(void) {
208 mca_mark_as_unused(ps2esdi_slot);
209 mca_set_adapter_procfn(ps2esdi_slot, NULL, NULL);
211 release_region(io_base, 4);
212 free_dma(dma_arb_level);
213 free_irq(PS2ESDI_IRQ, &ps2esdi_gendisk);
214 unregister_blkdev(PS2ESDI_MAJOR, "ed");
215 blk_cleanup_queue(ps2esdi_queue);
216 for (i = 0; i < ps2esdi_drives; i++) {
217 del_gendisk(ps2esdi_gendisk[i]);
218 put_disk(ps2esdi_gendisk[i]);
223 /* handles boot time command line parameters */
224 void __init tp720_setup(char *str, int *ints)
226 /* no params, just sets the tp720esdi flag if it exists */
228 printk("%s: TP 720 ESDI flag set\n", DEVICE_NAME);
232 void __init ed_setup(char *str, int *ints)
236 /* handles 3 parameters only - corresponding to
237 1. Number of cylinders
245 /* print out the information - seen at boot time */
246 printk("%s: ints[0]=%d ints[1]=%d ints[2]=%d ints[3]=%d\n",
247 DEVICE_NAME, ints[0], ints[1], ints[2], ints[3]);
249 /* set the index into device specific information table */
250 if (ps2esdi_info[0].head != 0)
253 /* set up all the device information */
254 ps2esdi_info[hdind].head = ints[2];
255 ps2esdi_info[hdind].sect = ints[3];
256 ps2esdi_info[hdind].cyl = ints[1];
257 ps2esdi_info[hdind].wpcom = 0;
258 ps2esdi_info[hdind].lzone = ints[1];
259 ps2esdi_info[hdind].ctl = (ints[2] > 8 ? 8 : 0);
260 #if 0 /* this may be needed for PS2/Mod.80, but it hurts ThinkPad! */
261 ps2esdi_drives = hdind + 1; /* increment index for the next time */
265 static int ps2esdi_getinfo(char *buf, int slot, void *d)
269 len += sprintf(buf + len, "DMA Arbitration Level: %d\n",
271 len += sprintf(buf + len, "IO Port: %x\n", io_base);
272 len += sprintf(buf + len, "IRQ: 14\n");
273 len += sprintf(buf + len, "Drives: %d\n", ps2esdi_drives);
278 /* ps2 esdi specific initialization - called thru the gendisk chain */
279 static int __init ps2esdi_geninit(void)
282 The first part contains the initialization code
283 for the ESDI disk subsystem. All we really do
284 is search for the POS registers of the controller
285 to do some simple setup operations. First, we
286 must ensure that the controller is installed,
287 enabled, and configured as PRIMARY. Then we must
288 determine the DMA arbitration level being used by
289 the controller so we can handle data transfer
290 operations properly. If all of this works, then
291 we will set the INIT_FLAG to a non-zero value.
294 int slot = 0, i, reset_start, reset_end;
296 unsigned short adapterID;
299 if ((slot = mca_find_adapter(INTG_ESDI_ID, 0)) != MCA_NOTFOUND) {
300 adapterID = INTG_ESDI_ID;
301 printk("%s: integrated ESDI adapter found in slot %d\n",
302 DEVICE_NAME, slot+1);
304 mca_set_adapter_name(slot, "PS/2 Integrated ESDI");
306 } else if ((slot = mca_find_adapter(NRML_ESDI_ID, 0)) != -1) {
307 adapterID = NRML_ESDI_ID;
308 printk("%s: normal ESDI adapter found in slot %d\n",
309 DEVICE_NAME, slot+1);
310 mca_set_adapter_name(slot, "PS/2 ESDI");
316 mca_mark_as_used(slot);
317 mca_set_adapter_procfn(slot, (MCA_ProcFn) ps2esdi_getinfo, NULL);
319 /* Found the slot - read the POS register 2 to get the necessary
320 configuration and status information. POS register 2 has the
321 following information :
326 1 - fairness disabled, linear priority assignment
327 5-2 arbitration level
330 0 - use addresses 0x3510 - 0x3517
334 status = mca_read_stored_pos(slot, 2);
335 /* is it enabled ? */
336 if (!(status & STATUS_ENABLED)) {
337 printk("%s: ESDI adapter disabled\n", DEVICE_NAME);
341 /* try to grab IRQ, and try to grab a slow IRQ if it fails, so we can
342 share with the SCSI driver */
343 if (request_irq(PS2ESDI_IRQ, ps2esdi_interrupt_handler,
344 SA_INTERRUPT | SA_SHIRQ, "PS/2 ESDI", &ps2esdi_gendisk)
345 && request_irq(PS2ESDI_IRQ, ps2esdi_interrupt_handler,
346 SA_SHIRQ, "PS/2 ESDI", &ps2esdi_gendisk)
348 printk("%s: Unable to get IRQ %d\n", DEVICE_NAME, PS2ESDI_IRQ);
352 if (status & STATUS_ALTERNATE)
353 io_base = ALT_IO_BASE;
355 io_base = PRIMARY_IO_BASE;
357 if (!request_region(io_base, 4, "ed")) {
358 printk(KERN_WARNING"Unable to request region 0x%x\n", io_base);
362 /* get the dma arbitration level */
363 dma_arb_level = (status >> 2) & 0xf;
366 printk("%s: DMA arbitration level : %d\n",
367 DEVICE_NAME, dma_arb_level);
370 current_int_handler = ps2esdi_initial_reset_int_handler;
373 reset_start = jiffies;
374 while (!reset_status) {
375 init_timer(&esdi_timer);
376 esdi_timer.expires = jiffies + HZ;
378 add_timer(&esdi_timer);
379 sleep_on(&ps2esdi_int);
383 printk("%s: reset interrupt after %d jiffies, %u.%02u secs\n",
384 DEVICE_NAME, reset_end - reset_start, (reset_end - reset_start) / HZ,
385 (reset_end - reset_start) % HZ);
388 /* Integrated ESDI Disk and Controller has only one drive! */
389 if (adapterID == INTG_ESDI_ID) {/* if not "normal" PS2 ESDI adapter */
390 ps2esdi_drives = 1; /* then we have only one physical disk! */ intg_esdi = 1;
395 /* finally this part sets up some global data structures etc. */
397 ps2esdi_get_device_cfg();
399 /* some annoyance in the above routine returns TWO drives?
400 Is something else happining in the background?
401 Regaurdless we fix the # of drives again. AJK */
402 /* Integrated ESDI Disk and Controller has only one drive! */
403 if (adapterID == INTG_ESDI_ID) /* if not "normal" PS2 ESDI adapter */
404 ps2esdi_drives = 1; /* Not three or two, ONE DAMNIT! */
406 current_int_handler = ps2esdi_normal_interrupt_handler;
408 if (request_dma(dma_arb_level, "ed") !=0) {
409 printk(KERN_WARNING "PS2ESDI: Can't request dma-channel %d\n"
410 ,(int) dma_arb_level);
414 blk_queue_max_sectors(ps2esdi_queue, 128);
417 for (i = 0; i < ps2esdi_drives; i++) {
418 struct gendisk *disk = alloc_disk(64);
421 disk->major = PS2ESDI_MAJOR;
422 disk->first_minor = i<<6;
423 sprintf(disk->disk_name, "ed%c", 'a'+i);
424 sprintf(disk->devfs_name, "ed/target%d", i);
425 disk->fops = &ps2esdi_fops;
426 ps2esdi_gendisk[i] = disk;
429 for (i = 0; i < ps2esdi_drives; i++) {
430 struct gendisk *disk = ps2esdi_gendisk[i];
431 set_capacity(disk, ps2esdi_info[i].head * ps2esdi_info[i].sect *
432 ps2esdi_info[i].cyl);
433 disk->queue = ps2esdi_queue;
434 disk->private_data = &ps2esdi_info[i];
440 put_disk(ps2esdi_gendisk[i]);
442 release_region(io_base, 4);
444 free_irq(PS2ESDI_IRQ, &ps2esdi_gendisk);
447 mca_mark_as_unused(ps2esdi_slot);
448 mca_set_adapter_procfn(ps2esdi_slot, NULL, NULL);
453 static void __init ps2esdi_get_device_cfg(void)
455 u_short cmd_blk[TYPE_0_CMD_BLK_LENGTH];
457 /*BA */ printk("%s: Drive 0\n", DEVICE_NAME);
458 current_int_handler = ps2esdi_geometry_int_handler;
459 cmd_blk[0] = CMD_GET_DEV_CONFIG | 0x600;
462 ps2esdi_out_cmd_blk(cmd_blk);
464 sleep_on(&ps2esdi_int);
466 if (ps2esdi_drives > 1) {
467 printk("%s: Drive 1\n", DEVICE_NAME); /*BA */
468 cmd_blk[0] = CMD_GET_DEV_CONFIG | (1 << 5) | 0x600;
471 ps2esdi_out_cmd_blk(cmd_blk);
473 sleep_on(&ps2esdi_int);
474 } /* if second physical drive is present */
478 /* strategy routine that handles most of the IO requests */
479 static void do_ps2esdi_request(request_queue_t * q)
482 /* since, this routine is called with interrupts cleared - they
483 must be before it finishes */
485 req = elv_next_request(q);
490 printk("%s:got request. device : %s command : %d sector : %ld count : %ld, buffer: %p\n",
492 req->rq_disk->disk_name,
493 req->cmd, req->sector,
494 req->current_nr_sectors, req->buffer);
497 /* check for above 16Mb dmas */
498 if (isa_virt_to_bus(req->buffer + req->current_nr_sectors * 512) > 16 * MB) {
499 printk("%s: DMA above 16MB not supported\n", DEVICE_NAME);
500 end_request(req, FAIL);
504 if (req->sector+req->current_nr_sectors > get_capacity(req->rq_disk)) {
505 printk("Grrr. error. ps2esdi_drives: %d, %llu %llu\n",
506 ps2esdi_drives, req->sector,
507 (unsigned long long)get_capacity(req->rq_disk));
508 end_request(req, FAIL);
512 switch (rq_data_dir(req)) {
514 ps2esdi_readwrite(READ, req);
517 ps2esdi_readwrite(WRITE, req);
520 printk("%s: Unknown command\n", req->rq_disk->disk_name);
521 end_request(req, FAIL);
523 } /* handle different commands */
524 } /* main strategy routine */
526 /* resets the ESDI adapter */
527 static void reset_ctrl(void)
533 /* enable interrupts on the controller */
534 status = inb(ESDI_INTRPT);
535 outb((status & 0xe0) | ATT_EOI, ESDI_ATTN); /* to be sure we don't have
536 any interrupt pending... */
537 outb_p(CTRL_ENABLE_INTR, ESDI_CONTROL);
539 /* read the ESDI status port - if the controller is not busy,
540 simply do a soft reset (fast) - otherwise we'll have to do a
541 hard (slow) reset. */
542 if (!(inb_p(ESDI_STATUS) & STATUS_BUSY)) {
543 /*BA */ printk("%s: soft reset...\n", DEVICE_NAME);
544 outb_p(CTRL_SOFT_RESET, ESDI_ATTN);
549 printk("%s: hard reset...\n", DEVICE_NAME);
550 outb_p(CTRL_HARD_RESET, ESDI_CONTROL);
551 expire = jiffies + 2*HZ;
552 while (time_before(jiffies, expire));
553 outb_p(1, ESDI_CONTROL);
557 } /* reset the controller */
559 /* called by the strategy routine to handle read and write requests */
560 static void ps2esdi_readwrite(int cmd, struct request *req)
562 struct ps2esdi_i_struct *p = req->rq_disk->private_data;
563 unsigned block = req->sector;
564 unsigned count = req->current_nr_sectors;
565 int drive = p - ps2esdi_info;
566 u_short track, head, cylinder, sector;
567 u_short cmd_blk[TYPE_1_CMD_BLK_LENGTH];
569 /* do some relevant arithmatic */
570 track = block / p->sect;
571 head = track % p->head;
572 cylinder = track / p->head;
573 sector = block % p->sect;
576 printk("%s: cyl=%d head=%d sect=%d\n", DEVICE_NAME, cylinder, head, sector);
578 /* call the routine that actually fills out a command block */
579 ps2esdi_fill_cmd_block
581 (cmd == READ) ? CMD_READ : CMD_WRITE,
582 cylinder, head, sector, count, drive);
584 /* send the command block to the controller */
586 spin_unlock_irq(&ps2esdi_lock);
587 if (ps2esdi_out_cmd_blk(cmd_blk)) {
588 spin_lock_irq(&ps2esdi_lock);
589 printk("%s: Controller failed\n", DEVICE_NAME);
590 if ((++req->errors) >= MAX_RETRIES)
591 end_request(req, FAIL);
593 /* check for failure to put out the command block */
595 spin_lock_irq(&ps2esdi_lock);
597 printk("%s: waiting for xfer\n", DEVICE_NAME);
599 /* turn disk lights on */
603 } /* ps2esdi_readwrite */
605 /* fill out the command block */
606 static void ps2esdi_fill_cmd_block(u_short * cmd_blk, u_short cmd,
607 u_short cyl, u_short head, u_short sector, u_short length, u_char drive)
610 cmd_blk[0] = (drive << 5) | cmd;
612 cmd_blk[2] = ((cyl & 0x1f) << 11) | (head << 5) | sector;
613 cmd_blk[3] = (cyl & 0x3E0) >> 5;
615 } /* fill out the command block */
617 /* write a command block to the controller */
618 static int ps2esdi_out_cmd_blk(u_short * cmd_blk)
625 /* enable interrupts */
626 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
628 /* do not write to the controller, if it is busy */
629 for (jif = jiffies + ESDI_STAT_TIMEOUT;
630 time_after(jif, jiffies) &&
631 (inb(ESDI_STATUS) & STATUS_BUSY); )
635 printk("%s: i(1)=%ld\n", DEVICE_NAME, jif);
638 /* if device is still busy - then just time out */
639 if (inb(ESDI_STATUS) & STATUS_BUSY) {
640 printk("%s: ps2esdi_out_cmd timed out (1)\n", DEVICE_NAME);
643 /* Set up the attention register in the controller */
644 outb(((*cmd_blk) & 0xE0) | 1, ESDI_ATTN);
647 printk("%s: sending %d words to controller\n", DEVICE_NAME, (((*cmd_blk) >> 14) + 1) << 1);
650 /* one by one send each word out */
651 for (i = (((*cmd_blk) >> 14) + 1) << 1; i; i--) {
652 status = inb(ESDI_STATUS);
653 for (jif = jiffies + ESDI_STAT_TIMEOUT;
654 time_after(jif, jiffies) && (status & STATUS_BUSY) &&
655 (status & STATUS_CMD_INF); status = inb(ESDI_STATUS));
656 if ((status & (STATUS_BUSY | STATUS_CMD_INF)) == STATUS_BUSY) {
658 printk("%s: sending %04X\n", DEVICE_NAME, *cmd_blk);
660 outw(*cmd_blk++, ESDI_CMD_INT);
662 printk("%s: ps2esdi_out_cmd timed out while sending command (status=%02X)\n",
663 DEVICE_NAME, status);
666 } /* send all words out */
668 } /* send out the commands */
671 /* prepare for dma - do all the necessary setup */
672 static void ps2esdi_prep_dma(char *buffer, u_short length, u_char dma_xmode)
674 unsigned long flags = claim_dma_lock();
676 mca_disable_dma(dma_arb_level);
678 mca_set_dma_addr(dma_arb_level, isa_virt_to_bus(buffer));
680 mca_set_dma_count(dma_arb_level, length * 512 / 2);
682 mca_set_dma_mode(dma_arb_level, dma_xmode);
684 mca_enable_dma(dma_arb_level);
686 release_dma_lock(flags);
688 } /* prepare for dma */
692 static irqreturn_t ps2esdi_interrupt_handler(int irq, void *dev_id,
693 struct pt_regs *regs)
697 if (inb(ESDI_STATUS) & STATUS_INTR) {
698 int_ret_code = inb(ESDI_INTRPT);
699 if (current_int_handler) {
700 /* Disable adapter interrupts till processing is finished */
701 outb(CTRL_DISABLE_INTR, ESDI_CONTROL);
702 current_int_handler(int_ret_code);
704 printk("%s: help ! No interrupt handler.\n", DEVICE_NAME);
711 static void ps2esdi_initial_reset_int_handler(u_int int_ret_code)
714 switch (int_ret_code & 0xf) {
717 printk("%s: initial reset completed.\n", DEVICE_NAME);
718 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
719 wake_up(&ps2esdi_int);
722 printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME,
724 printk("%s: status: %02x\n", DEVICE_NAME, inb(ESDI_STATUS));
727 printk("%s: initial reset handler received interrupt: %02X\n",
728 DEVICE_NAME, int_ret_code);
729 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
732 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
736 static void ps2esdi_geometry_int_handler(u_int int_ret_code)
738 u_int status, drive_num;
742 drive_num = int_ret_code >> 5;
743 switch (int_ret_code & 0xf) {
744 case INT_CMD_COMPLETE:
745 for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--);
746 if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) {
747 printk("%s: timeout reading status word\n", DEVICE_NAME);
748 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
751 status = inw(ESDI_STT_INT);
752 if ((status & 0x1F) == CMD_GET_DEV_CONFIG) {
753 #define REPLY_WORDS 5 /* we already read word 0 */
754 u_short reply[REPLY_WORDS];
756 if (ps2esdi_read_status_words((status >> 8) - 1, REPLY_WORDS, reply)) {
758 printk("%s: Device Configuration Status for drive %u\n",
759 DEVICE_NAME, drive_num);
761 printk("%s: Spares/cyls: %u", DEVICE_NAME, reply[0] >> 8);
764 ("Config bits: %s%s%s%s%s\n",
765 (reply[0] & CONFIG_IS) ? "Invalid Secondary, " : "",
766 ((reply[0] & CONFIG_ZD) && !(reply[0] & CONFIG_IS))
767 ? "Zero Defect, " : "Defects Present, ",
768 (reply[0] & CONFIG_SF) ? "Skewed Format, " : "",
769 (reply[0] & CONFIG_FR) ? "Removable, " : "Non-Removable, ",
770 (reply[0] & CONFIG_RT) ? "No Retries" : "Retries");
772 rba = reply[1] | ((unsigned long) reply[2] << 16);
773 printk("%s: Number of RBA's: %lu\n", DEVICE_NAME, rba);
775 printk("%s: Physical number of cylinders: %u, Sectors/Track: %u, Heads: %u\n",
776 DEVICE_NAME, reply[3], reply[4] >> 8, reply[4] & 0xff);
778 if (!ps2esdi_info[drive_num].head) {
779 ps2esdi_info[drive_num].head = 64;
780 ps2esdi_info[drive_num].sect = 32;
781 ps2esdi_info[drive_num].cyl = rba / (64 * 32);
782 ps2esdi_info[drive_num].wpcom = 0;
783 ps2esdi_info[drive_num].lzone = ps2esdi_info[drive_num].cyl;
784 ps2esdi_info[drive_num].ctl = 8;
785 if (tp720esdi) { /* store the retrieved parameters */
786 ps2esdi_info[0].head = reply[4] & 0Xff;
787 ps2esdi_info[0].sect = reply[4] >> 8;
788 ps2esdi_info[0].cyl = reply[3];
789 ps2esdi_info[0].wpcom = 0;
790 ps2esdi_info[0].lzone = reply[3];
797 if (!ps2esdi_info[drive_num].head) {
798 ps2esdi_info[drive_num].head = reply[4] & 0Xff;
799 ps2esdi_info[drive_num].sect = reply[4] >> 8;
800 ps2esdi_info[drive_num].cyl = reply[3];
801 ps2esdi_info[drive_num].wpcom = 0;
802 ps2esdi_info[drive_num].lzone = reply[3];
803 if (tp720esdi) { /* store the retrieved parameters */
804 ps2esdi_info[0].head = reply[4] & 0Xff;
805 ps2esdi_info[0].sect = reply[4] >> 8;
806 ps2esdi_info[0].cyl = reply[3];
807 ps2esdi_info[0].wpcom = 0;
808 ps2esdi_info[0].lzone = reply[3];
816 printk("%s: failed while getting device config\n", DEVICE_NAME);
819 printk("%s: command %02X unknown by geometry handler\n",
820 DEVICE_NAME, status & 0x1f);
822 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
826 printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME,
828 printk("%s: Device not available\n", DEVICE_NAME);
832 case INT_CMD_ECC_RETRY:
833 case INT_CMD_WARNING:
837 case INT_CMD_BLK_ERR:
838 /*BA */ printk("%s: Whaa. Error occurred...\n", DEVICE_NAME);
839 dump_cmd_complete_status(int_ret_code);
840 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
843 printk("%s: Unknown interrupt reason: %02X\n",
844 DEVICE_NAME, int_ret_code & 0xf);
845 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
849 wake_up(&ps2esdi_int);
851 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
855 static void ps2esdi_normal_interrupt_handler(u_int int_ret_code)
862 switch (int_ret_code & 0x0f) {
863 case INT_TRANSFER_REQ:
864 ps2esdi_prep_dma(current_req->buffer,
865 current_req->current_nr_sectors,
866 (rq_data_dir(current_req) == READ)
867 ? MCA_DMA_MODE_16 | MCA_DMA_MODE_WRITE | MCA_DMA_MODE_XFER
868 : MCA_DMA_MODE_16 | MCA_DMA_MODE_READ);
869 outb(CTRL_ENABLE_DMA | CTRL_ENABLE_INTR, ESDI_CONTROL);
874 printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME,
876 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
880 case INT_CMD_COMPLETE:
881 for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--);
882 if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) {
883 printk("%s: timeout reading status word\n", DEVICE_NAME);
884 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
885 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
886 if ((++current_req->errors) >= MAX_RETRIES)
892 status = inw(ESDI_STT_INT);
893 switch (status & 0x1F) {
894 case (CMD_READ & 0xff):
895 case (CMD_WRITE & 0xff):
897 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
898 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
902 printk("%s: interrupt for unknown command %02X\n",
903 DEVICE_NAME, status & 0x1f);
904 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
905 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
912 case INT_CMD_ECC_RETRY:
914 dump_cmd_complete_status(int_ret_code);
915 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
916 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
919 case INT_CMD_WARNING:
924 dump_cmd_complete_status(int_ret_code);
925 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
926 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
927 if ((++current_req->errors) >= MAX_RETRIES)
933 case INT_CMD_BLK_ERR:
934 dump_cmd_complete_status(int_ret_code);
935 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
936 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
941 printk("%s: huh ? Who issued this format command ?\n"
943 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
944 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
949 /* BA printk("%s: reset completed.\n", DEVICE_NAME) */ ;
950 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
951 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
956 printk("%s: Unknown interrupt reason: %02X\n",
957 DEVICE_NAME, int_ret_code & 0xf);
958 outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
959 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
964 spin_lock_irqsave(&ps2esdi_lock, flags);
965 end_request(current_req, ending);
967 do_ps2esdi_request(ps2esdi_queue);
968 spin_unlock_irqrestore(&ps2esdi_lock, flags);
970 } /* handle interrupts */
974 static int ps2esdi_read_status_words(int num_words,
980 for (; max_words && num_words; max_words--, num_words--, buffer++) {
981 for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--);
982 if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) {
983 printk("%s: timeout reading status word\n", DEVICE_NAME);
986 *buffer = inw(ESDI_STT_INT);
994 static void dump_cmd_complete_status(u_int int_ret_code)
996 #define WAIT_FOR_STATUS \
997 for(i=ESDI_TIMEOUT;i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL);i--); \
998 if(!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) { \
999 printk("%s: timeout reading status word\n",DEVICE_NAME); \
1007 printk("%s: Device: %u, interrupt ID: %02X\n",
1008 DEVICE_NAME, int_ret_code >> 5,
1009 int_ret_code & 0xf);
1012 stat_word = inw(ESDI_STT_INT);
1013 word_count = (stat_word >> 8) - 1;
1014 printk("%s: %u status words, command: %02X\n", DEVICE_NAME, word_count,
1019 stat_word = inw(ESDI_STT_INT);
1020 printk("%s: command status code: %02X, command error code: %02X\n",
1021 DEVICE_NAME, stat_word >> 8, stat_word & 0xff);
1025 stat_word = inw(ESDI_STT_INT);
1026 printk("%s: device error code: %s%s%s%s%s,%02X\n", DEVICE_NAME,
1027 (stat_word & 0x1000) ? "Ready, " : "Not Ready, ",
1028 (stat_word & 0x0800) ? "Selected, " : "Not Selected, ",
1029 (stat_word & 0x0400) ? "Write Fault, " : "",
1030 (stat_word & 0x0200) ? "Track 0, " : "",
1031 (stat_word & 0x0100) ? "Seek or command complete, " : "",
1036 stat_word = inw(ESDI_STT_INT);
1037 printk("%s: Blocks to do: %u", DEVICE_NAME, stat_word);
1039 if (word_count -= 2) {
1041 rba = inw(ESDI_STT_INT);
1043 rba |= inw(ESDI_STT_INT) << 16;
1044 printk(", Last Cyl: %u Head: %u Sector: %u\n",
1045 (u_short) ((rba & 0x1ff80000) >> 11),
1046 (u_short) ((rba & 0x7E0) >> 5), (u_short) (rba & 0x1f));
1052 stat_word = inw(ESDI_STT_INT);
1053 printk("%s: Blocks required ECC: %u", DEVICE_NAME, stat_word);
1057 #undef WAIT_FOR_STATUS
1061 static int ps2esdi_ioctl(struct inode *inode,
1062 struct file *file, u_int cmd, u_long arg)
1064 struct ps2esdi_i_struct *p = inode->i_bdev->bd_disk->private_data;
1065 struct ps2esdi_geometry geom;
1067 if (cmd != HDIO_GETGEO)
1069 memset(&geom, 0, sizeof(geom));
1070 geom.heads = p->head;
1071 geom.sectors = p->sect;
1072 geom.cylinders = p->cyl;
1073 geom.start = get_start_sect(inode->i_bdev);
1074 if (copy_to_user((void __user *)arg, &geom, sizeof(geom)))
1079 static void ps2esdi_reset_timer(unsigned long unused)
1084 status = inb(ESDI_INTRPT);
1085 if ((status & 0xf) == INT_RESET) {
1086 outb((status & 0xe0) | ATT_EOI, ESDI_ATTN);
1087 outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
1090 wake_up(&ps2esdi_int);