|
@@ -1,1079 +0,0 @@
|
|
-/* ps2esdi driver based on assembler code by Arindam Banerji,
|
|
|
|
- written by Peter De Schrijver */
|
|
|
|
-/* Reassuring note to IBM : This driver was NOT developed by vice-versa
|
|
|
|
- engineering the PS/2's BIOS */
|
|
|
|
-/* Dedicated to Wannes, Tofke, Ykke, Godot, Killroy and all those
|
|
|
|
- other lovely fish out there... */
|
|
|
|
-/* This code was written during the long and boring WINA
|
|
|
|
- elections 1994 */
|
|
|
|
-/* Thanks to Arindam Banerij for giving me the source of his driver */
|
|
|
|
-/* This code may be freely distributed and modified in any way,
|
|
|
|
- as long as these notes remain intact */
|
|
|
|
-
|
|
|
|
-/* Revised: 05/07/94 by Arindam Banerji (axb@cse.nd.edu) */
|
|
|
|
-/* Revised: 09/08/94 by Peter De Schrijver (stud11@cc4.kuleuven.ac.be)
|
|
|
|
- Thanks to Arindam Banerij for sending me the docs of the adapter */
|
|
|
|
-
|
|
|
|
-/* BA Modified for ThinkPad 720 by Boris Ashkinazi */
|
|
|
|
-/* (bash@vnet.ibm.com) 08/08/95 */
|
|
|
|
-
|
|
|
|
-/* Modified further for ThinkPad-720C by Uri Blumenthal */
|
|
|
|
-/* (uri@watson.ibm.com) Sep 11, 1995 */
|
|
|
|
-
|
|
|
|
-/* TODO :
|
|
|
|
- + Timeouts
|
|
|
|
- + Get disk parameters
|
|
|
|
- + DMA above 16MB
|
|
|
|
- + reset after read/write error
|
|
|
|
- */
|
|
|
|
-
|
|
|
|
-#define DEVICE_NAME "PS/2 ESDI"
|
|
|
|
-
|
|
|
|
-#include <linux/major.h>
|
|
|
|
-#include <linux/errno.h>
|
|
|
|
-#include <linux/wait.h>
|
|
|
|
-#include <linux/interrupt.h>
|
|
|
|
-#include <linux/fs.h>
|
|
|
|
-#include <linux/kernel.h>
|
|
|
|
-#include <linux/genhd.h>
|
|
|
|
-#include <linux/ps2esdi.h>
|
|
|
|
-#include <linux/blkdev.h>
|
|
|
|
-#include <linux/mca-legacy.h>
|
|
|
|
-#include <linux/init.h>
|
|
|
|
-#include <linux/ioport.h>
|
|
|
|
-#include <linux/module.h>
|
|
|
|
-#include <linux/hdreg.h>
|
|
|
|
-
|
|
|
|
-#include <asm/system.h>
|
|
|
|
-#include <asm/io.h>
|
|
|
|
-#include <asm/dma.h>
|
|
|
|
-#include <asm/mca_dma.h>
|
|
|
|
-#include <asm/uaccess.h>
|
|
|
|
-
|
|
|
|
-#define PS2ESDI_IRQ 14
|
|
|
|
-#define MAX_HD 2
|
|
|
|
-#define MAX_RETRIES 5
|
|
|
|
-#define MAX_16BIT 65536
|
|
|
|
-#define ESDI_TIMEOUT 0xf000
|
|
|
|
-#define ESDI_STAT_TIMEOUT 4
|
|
|
|
-
|
|
|
|
-#define TYPE_0_CMD_BLK_LENGTH 2
|
|
|
|
-#define TYPE_1_CMD_BLK_LENGTH 4
|
|
|
|
-
|
|
|
|
-static void reset_ctrl(void);
|
|
|
|
-
|
|
|
|
-static int ps2esdi_geninit(void);
|
|
|
|
-
|
|
|
|
-static void do_ps2esdi_request(struct request_queue * q);
|
|
|
|
-
|
|
|
|
-static void ps2esdi_readwrite(int cmd, struct request *req);
|
|
|
|
-
|
|
|
|
-static void ps2esdi_fill_cmd_block(u_short * cmd_blk, u_short cmd,
|
|
|
|
-u_short cyl, u_short head, u_short sector, u_short length, u_char drive);
|
|
|
|
-
|
|
|
|
-static int ps2esdi_out_cmd_blk(u_short * cmd_blk);
|
|
|
|
-
|
|
|
|
-static void ps2esdi_prep_dma(char *buffer, u_short length, u_char dma_xmode);
|
|
|
|
-
|
|
|
|
-static irqreturn_t ps2esdi_interrupt_handler(int irq, void *dev_id);
|
|
|
|
-static void (*current_int_handler) (u_int) = NULL;
|
|
|
|
-static void ps2esdi_normal_interrupt_handler(u_int);
|
|
|
|
-static void ps2esdi_initial_reset_int_handler(u_int);
|
|
|
|
-static void ps2esdi_geometry_int_handler(u_int);
|
|
|
|
-static int ps2esdi_getgeo(struct block_device *bdev, struct hd_geometry *geo);
|
|
|
|
-
|
|
|
|
-static int ps2esdi_read_status_words(int num_words, int max_words, u_short * buffer);
|
|
|
|
-
|
|
|
|
-static void dump_cmd_complete_status(u_int int_ret_code);
|
|
|
|
-
|
|
|
|
-static void ps2esdi_get_device_cfg(void);
|
|
|
|
-
|
|
|
|
-static void ps2esdi_reset_timer(unsigned long unused);
|
|
|
|
-
|
|
|
|
-static u_int dma_arb_level; /* DMA arbitration level */
|
|
|
|
-
|
|
|
|
-static DECLARE_WAIT_QUEUE_HEAD(ps2esdi_int);
|
|
|
|
-
|
|
|
|
-static int no_int_yet;
|
|
|
|
-static int ps2esdi_drives;
|
|
|
|
-static u_short io_base;
|
|
|
|
-static DEFINE_TIMER(esdi_timer, ps2esdi_reset_timer, 0, 0);
|
|
|
|
-static int reset_status;
|
|
|
|
-static int ps2esdi_slot = -1;
|
|
|
|
-static int tp720esdi = 0; /* Is it Integrated ESDI of ThinkPad-720? */
|
|
|
|
-static int intg_esdi = 0; /* If integrated adapter */
|
|
|
|
-struct ps2esdi_i_struct {
|
|
|
|
- unsigned int head, sect, cyl, wpcom, lzone, ctl;
|
|
|
|
-};
|
|
|
|
-static DEFINE_SPINLOCK(ps2esdi_lock);
|
|
|
|
-static struct request_queue *ps2esdi_queue;
|
|
|
|
-static struct request *current_req;
|
|
|
|
-
|
|
|
|
-#if 0
|
|
|
|
-#if 0 /* try both - I don't know which one is better... UB */
|
|
|
|
-static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] =
|
|
|
|
-{
|
|
|
|
- {4, 48, 1553, 0, 0, 0},
|
|
|
|
- {0, 0, 0, 0, 0, 0}};
|
|
|
|
-#else
|
|
|
|
-static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] =
|
|
|
|
-{
|
|
|
|
- {64, 32, 161, 0, 0, 0},
|
|
|
|
- {0, 0, 0, 0, 0, 0}};
|
|
|
|
-#endif
|
|
|
|
-#endif
|
|
|
|
-static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] =
|
|
|
|
-{
|
|
|
|
- {0, 0, 0, 0, 0, 0},
|
|
|
|
- {0, 0, 0, 0, 0, 0}};
|
|
|
|
-
|
|
|
|
-static struct block_device_operations ps2esdi_fops =
|
|
|
|
-{
|
|
|
|
- .owner = THIS_MODULE,
|
|
|
|
- .getgeo = ps2esdi_getgeo,
|
|
|
|
-};
|
|
|
|
-
|
|
|
|
-static struct gendisk *ps2esdi_gendisk[2];
|
|
|
|
-
|
|
|
|
-/* initialization routine called by ll_rw_blk.c */
|
|
|
|
-static int __init ps2esdi_init(void)
|
|
|
|
-{
|
|
|
|
-
|
|
|
|
- int error = 0;
|
|
|
|
-
|
|
|
|
- /* register the device - pass the name and major number */
|
|
|
|
- if (register_blkdev(PS2ESDI_MAJOR, "ed"))
|
|
|
|
- return -EBUSY;
|
|
|
|
-
|
|
|
|
- /* set up some global information - indicating device specific info */
|
|
|
|
- ps2esdi_queue = blk_init_queue(do_ps2esdi_request, &ps2esdi_lock);
|
|
|
|
- if (!ps2esdi_queue) {
|
|
|
|
- unregister_blkdev(PS2ESDI_MAJOR, "ed");
|
|
|
|
- return -ENOMEM;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- /* some minor housekeeping - setup the global gendisk structure */
|
|
|
|
- error = ps2esdi_geninit();
|
|
|
|
- if (error) {
|
|
|
|
- printk(KERN_WARNING "PS2ESDI: error initialising"
|
|
|
|
- " device, releasing resources\n");
|
|
|
|
- unregister_blkdev(PS2ESDI_MAJOR, "ed");
|
|
|
|
- blk_cleanup_queue(ps2esdi_queue);
|
|
|
|
- return error;
|
|
|
|
- }
|
|
|
|
- return 0;
|
|
|
|
-} /* ps2esdi_init */
|
|
|
|
-
|
|
|
|
-#ifndef MODULE
|
|
|
|
-
|
|
|
|
-module_init(ps2esdi_init);
|
|
|
|
-
|
|
|
|
-#else
|
|
|
|
-
|
|
|
|
-static int cyl[MAX_HD] = {-1,-1};
|
|
|
|
-static int head[MAX_HD] = {-1, -1};
|
|
|
|
-static int sect[MAX_HD] = {-1, -1};
|
|
|
|
-
|
|
|
|
-module_param(tp720esdi, bool, 0);
|
|
|
|
-module_param_array(cyl, int, NULL, 0);
|
|
|
|
-module_param_array(head, int, NULL, 0);
|
|
|
|
-module_param_array(sect, int, NULL, 0);
|
|
|
|
-MODULE_LICENSE("GPL");
|
|
|
|
-
|
|
|
|
-int init_module(void) {
|
|
|
|
- int drive;
|
|
|
|
-
|
|
|
|
- for(drive = 0; drive < MAX_HD; drive++) {
|
|
|
|
- struct ps2esdi_i_struct *info = &ps2esdi_info[drive];
|
|
|
|
-
|
|
|
|
- if (cyl[drive] != -1) {
|
|
|
|
- info->cyl = info->lzone = cyl[drive];
|
|
|
|
- info->wpcom = 0;
|
|
|
|
- }
|
|
|
|
- if (head[drive] != -1) {
|
|
|
|
- info->head = head[drive];
|
|
|
|
- info->ctl = (head[drive] > 8 ? 8 : 0);
|
|
|
|
- }
|
|
|
|
- if (sect[drive] != -1) info->sect = sect[drive];
|
|
|
|
- }
|
|
|
|
- return ps2esdi_init();
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-void
|
|
|
|
-cleanup_module(void) {
|
|
|
|
- int i;
|
|
|
|
- if(ps2esdi_slot) {
|
|
|
|
- mca_mark_as_unused(ps2esdi_slot);
|
|
|
|
- mca_set_adapter_procfn(ps2esdi_slot, NULL, NULL);
|
|
|
|
- }
|
|
|
|
- release_region(io_base, 4);
|
|
|
|
- free_dma(dma_arb_level);
|
|
|
|
- free_irq(PS2ESDI_IRQ, &ps2esdi_gendisk);
|
|
|
|
- unregister_blkdev(PS2ESDI_MAJOR, "ed");
|
|
|
|
- blk_cleanup_queue(ps2esdi_queue);
|
|
|
|
- for (i = 0; i < ps2esdi_drives; i++) {
|
|
|
|
- del_gendisk(ps2esdi_gendisk[i]);
|
|
|
|
- put_disk(ps2esdi_gendisk[i]);
|
|
|
|
- }
|
|
|
|
-}
|
|
|
|
-#endif /* MODULE */
|
|
|
|
-
|
|
|
|
-/* handles boot time command line parameters */
|
|
|
|
-void __init tp720_setup(char *str, int *ints)
|
|
|
|
-{
|
|
|
|
- /* no params, just sets the tp720esdi flag if it exists */
|
|
|
|
-
|
|
|
|
- printk("%s: TP 720 ESDI flag set\n", DEVICE_NAME);
|
|
|
|
- tp720esdi = 1;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-void __init ed_setup(char *str, int *ints)
|
|
|
|
-{
|
|
|
|
- int hdind = 0;
|
|
|
|
-
|
|
|
|
- /* handles 3 parameters only - corresponding to
|
|
|
|
- 1. Number of cylinders
|
|
|
|
- 2. Number of heads
|
|
|
|
- 3. Sectors/track
|
|
|
|
- */
|
|
|
|
-
|
|
|
|
- if (ints[0] != 3)
|
|
|
|
- return;
|
|
|
|
-
|
|
|
|
- /* print out the information - seen at boot time */
|
|
|
|
- printk("%s: ints[0]=%d ints[1]=%d ints[2]=%d ints[3]=%d\n",
|
|
|
|
- DEVICE_NAME, ints[0], ints[1], ints[2], ints[3]);
|
|
|
|
-
|
|
|
|
- /* set the index into device specific information table */
|
|
|
|
- if (ps2esdi_info[0].head != 0)
|
|
|
|
- hdind = 1;
|
|
|
|
-
|
|
|
|
- /* set up all the device information */
|
|
|
|
- ps2esdi_info[hdind].head = ints[2];
|
|
|
|
- ps2esdi_info[hdind].sect = ints[3];
|
|
|
|
- ps2esdi_info[hdind].cyl = ints[1];
|
|
|
|
- ps2esdi_info[hdind].wpcom = 0;
|
|
|
|
- ps2esdi_info[hdind].lzone = ints[1];
|
|
|
|
- ps2esdi_info[hdind].ctl = (ints[2] > 8 ? 8 : 0);
|
|
|
|
-#if 0 /* this may be needed for PS2/Mod.80, but it hurts ThinkPad! */
|
|
|
|
- ps2esdi_drives = hdind + 1; /* increment index for the next time */
|
|
|
|
-#endif
|
|
|
|
-} /* ed_setup */
|
|
|
|
-
|
|
|
|
-static int ps2esdi_getinfo(char *buf, int slot, void *d)
|
|
|
|
-{
|
|
|
|
- int len = 0;
|
|
|
|
-
|
|
|
|
- len += sprintf(buf + len, "DMA Arbitration Level: %d\n",
|
|
|
|
- dma_arb_level);
|
|
|
|
- len += sprintf(buf + len, "IO Port: %x\n", io_base);
|
|
|
|
- len += sprintf(buf + len, "IRQ: 14\n");
|
|
|
|
- len += sprintf(buf + len, "Drives: %d\n", ps2esdi_drives);
|
|
|
|
-
|
|
|
|
- return len;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/* ps2 esdi specific initialization - called thru the gendisk chain */
|
|
|
|
-static int __init ps2esdi_geninit(void)
|
|
|
|
-{
|
|
|
|
- /*
|
|
|
|
- The first part contains the initialization code
|
|
|
|
- for the ESDI disk subsystem. All we really do
|
|
|
|
- is search for the POS registers of the controller
|
|
|
|
- to do some simple setup operations. First, we
|
|
|
|
- must ensure that the controller is installed,
|
|
|
|
- enabled, and configured as PRIMARY. Then we must
|
|
|
|
- determine the DMA arbitration level being used by
|
|
|
|
- the controller so we can handle data transfer
|
|
|
|
- operations properly. If all of this works, then
|
|
|
|
- we will set the INIT_FLAG to a non-zero value.
|
|
|
|
- */
|
|
|
|
-
|
|
|
|
- int slot = 0, i, reset_start, reset_end;
|
|
|
|
- u_char status;
|
|
|
|
- unsigned short adapterID;
|
|
|
|
- int error = 0;
|
|
|
|
-
|
|
|
|
- if ((slot = mca_find_adapter(INTG_ESDI_ID, 0)) != MCA_NOTFOUND) {
|
|
|
|
- adapterID = INTG_ESDI_ID;
|
|
|
|
- printk("%s: integrated ESDI adapter found in slot %d\n",
|
|
|
|
- DEVICE_NAME, slot+1);
|
|
|
|
-#ifndef MODULE
|
|
|
|
- mca_set_adapter_name(slot, "PS/2 Integrated ESDI");
|
|
|
|
-#endif
|
|
|
|
- } else if ((slot = mca_find_adapter(NRML_ESDI_ID, 0)) != -1) {
|
|
|
|
- adapterID = NRML_ESDI_ID;
|
|
|
|
- printk("%s: normal ESDI adapter found in slot %d\n",
|
|
|
|
- DEVICE_NAME, slot+1);
|
|
|
|
- mca_set_adapter_name(slot, "PS/2 ESDI");
|
|
|
|
- } else {
|
|
|
|
- return -ENODEV;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- ps2esdi_slot = slot;
|
|
|
|
- mca_mark_as_used(slot);
|
|
|
|
- mca_set_adapter_procfn(slot, (MCA_ProcFn) ps2esdi_getinfo, NULL);
|
|
|
|
-
|
|
|
|
- /* Found the slot - read the POS register 2 to get the necessary
|
|
|
|
- configuration and status information. POS register 2 has the
|
|
|
|
- following information :
|
|
|
|
- Bit Function
|
|
|
|
- 7 reserved = 0
|
|
|
|
- 6 arbitration method
|
|
|
|
- 0 - fairness enabled
|
|
|
|
- 1 - fairness disabled, linear priority assignment
|
|
|
|
- 5-2 arbitration level
|
|
|
|
- 1 alternate address
|
|
|
|
- 1 alternate address
|
|
|
|
- 0 - use addresses 0x3510 - 0x3517
|
|
|
|
- 0 adapter enable
|
|
|
|
- */
|
|
|
|
-
|
|
|
|
- status = mca_read_stored_pos(slot, 2);
|
|
|
|
- /* is it enabled ? */
|
|
|
|
- if (!(status & STATUS_ENABLED)) {
|
|
|
|
- printk("%s: ESDI adapter disabled\n", DEVICE_NAME);
|
|
|
|
- error = -ENODEV;
|
|
|
|
- goto err_out1;
|
|
|
|
- }
|
|
|
|
- /* try to grab IRQ, and try to grab a slow IRQ if it fails, so we can
|
|
|
|
- share with the SCSI driver */
|
|
|
|
- if (request_irq(PS2ESDI_IRQ, ps2esdi_interrupt_handler,
|
|
|
|
- IRQF_DISABLED | IRQF_SHARED, "PS/2 ESDI", &ps2esdi_gendisk)
|
|
|
|
- && request_irq(PS2ESDI_IRQ, ps2esdi_interrupt_handler,
|
|
|
|
- IRQF_SHARED, "PS/2 ESDI", &ps2esdi_gendisk)
|
|
|
|
- ) {
|
|
|
|
- printk("%s: Unable to get IRQ %d\n", DEVICE_NAME, PS2ESDI_IRQ);
|
|
|
|
- error = -EBUSY;
|
|
|
|
- goto err_out1;
|
|
|
|
- }
|
|
|
|
- if (status & STATUS_ALTERNATE)
|
|
|
|
- io_base = ALT_IO_BASE;
|
|
|
|
- else
|
|
|
|
- io_base = PRIMARY_IO_BASE;
|
|
|
|
-
|
|
|
|
- if (!request_region(io_base, 4, "ed")) {
|
|
|
|
- printk(KERN_WARNING"Unable to request region 0x%x\n", io_base);
|
|
|
|
- error = -EBUSY;
|
|
|
|
- goto err_out2;
|
|
|
|
- }
|
|
|
|
- /* get the dma arbitration level */
|
|
|
|
- dma_arb_level = (status >> 2) & 0xf;
|
|
|
|
-
|
|
|
|
- /* BA */
|
|
|
|
- printk("%s: DMA arbitration level : %d\n",
|
|
|
|
- DEVICE_NAME, dma_arb_level);
|
|
|
|
-
|
|
|
|
- LITE_ON;
|
|
|
|
- current_int_handler = ps2esdi_initial_reset_int_handler;
|
|
|
|
- reset_ctrl();
|
|
|
|
- reset_status = 0;
|
|
|
|
- reset_start = jiffies;
|
|
|
|
- while (!reset_status) {
|
|
|
|
- init_timer(&esdi_timer);
|
|
|
|
- esdi_timer.expires = jiffies + HZ;
|
|
|
|
- esdi_timer.data = 0;
|
|
|
|
- add_timer(&esdi_timer);
|
|
|
|
- sleep_on(&ps2esdi_int);
|
|
|
|
- }
|
|
|
|
- reset_end = jiffies;
|
|
|
|
- LITE_OFF;
|
|
|
|
- printk("%s: reset interrupt after %d jiffies, %u.%02u secs\n",
|
|
|
|
- DEVICE_NAME, reset_end - reset_start, (reset_end - reset_start) / HZ,
|
|
|
|
- (reset_end - reset_start) % HZ);
|
|
|
|
-
|
|
|
|
-
|
|
|
|
- /* Integrated ESDI Disk and Controller has only one drive! */
|
|
|
|
- if (adapterID == INTG_ESDI_ID) {/* if not "normal" PS2 ESDI adapter */
|
|
|
|
- ps2esdi_drives = 1; /* then we have only one physical disk! */ intg_esdi = 1;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
|
- /* finally this part sets up some global data structures etc. */
|
|
|
|
-
|
|
|
|
- ps2esdi_get_device_cfg();
|
|
|
|
-
|
|
|
|
- /* some annoyance in the above routine returns TWO drives?
|
|
|
|
- Is something else happining in the background?
|
|
|
|
- Regaurdless we fix the # of drives again. AJK */
|
|
|
|
- /* Integrated ESDI Disk and Controller has only one drive! */
|
|
|
|
- if (adapterID == INTG_ESDI_ID) /* if not "normal" PS2 ESDI adapter */
|
|
|
|
- ps2esdi_drives = 1; /* Not three or two, ONE DAMNIT! */
|
|
|
|
-
|
|
|
|
- current_int_handler = ps2esdi_normal_interrupt_handler;
|
|
|
|
-
|
|
|
|
- if (request_dma(dma_arb_level, "ed") !=0) {
|
|
|
|
- printk(KERN_WARNING "PS2ESDI: Can't request dma-channel %d\n"
|
|
|
|
- ,(int) dma_arb_level);
|
|
|
|
- error = -EBUSY;
|
|
|
|
- goto err_out3;
|
|
|
|
- }
|
|
|
|
- blk_queue_max_sectors(ps2esdi_queue, 128);
|
|
|
|
-
|
|
|
|
- error = -ENOMEM;
|
|
|
|
- for (i = 0; i < ps2esdi_drives; i++) {
|
|
|
|
- struct gendisk *disk = alloc_disk(64);
|
|
|
|
- if (!disk)
|
|
|
|
- goto err_out4;
|
|
|
|
- disk->major = PS2ESDI_MAJOR;
|
|
|
|
- disk->first_minor = i<<6;
|
|
|
|
- sprintf(disk->disk_name, "ed%c", 'a'+i);
|
|
|
|
- disk->fops = &ps2esdi_fops;
|
|
|
|
- ps2esdi_gendisk[i] = disk;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- for (i = 0; i < ps2esdi_drives; i++) {
|
|
|
|
- struct gendisk *disk = ps2esdi_gendisk[i];
|
|
|
|
- set_capacity(disk, ps2esdi_info[i].head * ps2esdi_info[i].sect *
|
|
|
|
- ps2esdi_info[i].cyl);
|
|
|
|
- disk->queue = ps2esdi_queue;
|
|
|
|
- disk->private_data = &ps2esdi_info[i];
|
|
|
|
- add_disk(disk);
|
|
|
|
- }
|
|
|
|
- return 0;
|
|
|
|
-err_out4:
|
|
|
|
- while (i--)
|
|
|
|
- put_disk(ps2esdi_gendisk[i]);
|
|
|
|
-err_out3:
|
|
|
|
- release_region(io_base, 4);
|
|
|
|
-err_out2:
|
|
|
|
- free_irq(PS2ESDI_IRQ, &ps2esdi_gendisk);
|
|
|
|
-err_out1:
|
|
|
|
- if(ps2esdi_slot) {
|
|
|
|
- mca_mark_as_unused(ps2esdi_slot);
|
|
|
|
- mca_set_adapter_procfn(ps2esdi_slot, NULL, NULL);
|
|
|
|
- }
|
|
|
|
- return error;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-static void __init ps2esdi_get_device_cfg(void)
|
|
|
|
-{
|
|
|
|
- u_short cmd_blk[TYPE_0_CMD_BLK_LENGTH];
|
|
|
|
-
|
|
|
|
- /*BA */ printk("%s: Drive 0\n", DEVICE_NAME);
|
|
|
|
- current_int_handler = ps2esdi_geometry_int_handler;
|
|
|
|
- cmd_blk[0] = CMD_GET_DEV_CONFIG | 0x600;
|
|
|
|
- cmd_blk[1] = 0;
|
|
|
|
- no_int_yet = TRUE;
|
|
|
|
- ps2esdi_out_cmd_blk(cmd_blk);
|
|
|
|
- if (no_int_yet)
|
|
|
|
- sleep_on(&ps2esdi_int);
|
|
|
|
-
|
|
|
|
- if (ps2esdi_drives > 1) {
|
|
|
|
- printk("%s: Drive 1\n", DEVICE_NAME); /*BA */
|
|
|
|
- cmd_blk[0] = CMD_GET_DEV_CONFIG | (1 << 5) | 0x600;
|
|
|
|
- cmd_blk[1] = 0;
|
|
|
|
- no_int_yet = TRUE;
|
|
|
|
- ps2esdi_out_cmd_blk(cmd_blk);
|
|
|
|
- if (no_int_yet)
|
|
|
|
- sleep_on(&ps2esdi_int);
|
|
|
|
- } /* if second physical drive is present */
|
|
|
|
- return;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/* strategy routine that handles most of the IO requests */
|
|
|
|
-static void do_ps2esdi_request(struct request_queue * q)
|
|
|
|
-{
|
|
|
|
- struct request *req;
|
|
|
|
- /* since, this routine is called with interrupts cleared - they
|
|
|
|
- must be before it finishes */
|
|
|
|
-
|
|
|
|
- req = elv_next_request(q);
|
|
|
|
- if (!req)
|
|
|
|
- return;
|
|
|
|
-
|
|
|
|
-#if 0
|
|
|
|
- printk("%s:got request. device : %s command : %d sector : %ld count : %ld, buffer: %p\n",
|
|
|
|
- DEVICE_NAME,
|
|
|
|
- req->rq_disk->disk_name,
|
|
|
|
- req->cmd, req->sector,
|
|
|
|
- req->current_nr_sectors, req->buffer);
|
|
|
|
-#endif
|
|
|
|
-
|
|
|
|
- /* check for above 16Mb dmas */
|
|
|
|
- if (isa_virt_to_bus(req->buffer + req->current_nr_sectors * 512) > 16 * MB) {
|
|
|
|
- printk("%s: DMA above 16MB not supported\n", DEVICE_NAME);
|
|
|
|
- end_request(req, FAIL);
|
|
|
|
- return;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- if (req->sector+req->current_nr_sectors > get_capacity(req->rq_disk)) {
|
|
|
|
- printk("Grrr. error. ps2esdi_drives: %d, %llu %llu\n",
|
|
|
|
- ps2esdi_drives, req->sector,
|
|
|
|
- (unsigned long long)get_capacity(req->rq_disk));
|
|
|
|
- end_request(req, FAIL);
|
|
|
|
- return;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- switch (rq_data_dir(req)) {
|
|
|
|
- case READ:
|
|
|
|
- ps2esdi_readwrite(READ, req);
|
|
|
|
- break;
|
|
|
|
- case WRITE:
|
|
|
|
- ps2esdi_readwrite(WRITE, req);
|
|
|
|
- break;
|
|
|
|
- default:
|
|
|
|
- printk("%s: Unknown command\n", req->rq_disk->disk_name);
|
|
|
|
- end_request(req, FAIL);
|
|
|
|
- break;
|
|
|
|
- } /* handle different commands */
|
|
|
|
-} /* main strategy routine */
|
|
|
|
-
|
|
|
|
-/* resets the ESDI adapter */
|
|
|
|
-static void reset_ctrl(void)
|
|
|
|
-{
|
|
|
|
-
|
|
|
|
- u_long expire;
|
|
|
|
- u_short status;
|
|
|
|
-
|
|
|
|
- /* enable interrupts on the controller */
|
|
|
|
- status = inb(ESDI_INTRPT);
|
|
|
|
- outb((status & 0xe0) | ATT_EOI, ESDI_ATTN); /* to be sure we don't have
|
|
|
|
- any interrupt pending... */
|
|
|
|
- outb_p(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
-
|
|
|
|
- /* read the ESDI status port - if the controller is not busy,
|
|
|
|
- simply do a soft reset (fast) - otherwise we'll have to do a
|
|
|
|
- hard (slow) reset. */
|
|
|
|
- if (!(inb_p(ESDI_STATUS) & STATUS_BUSY)) {
|
|
|
|
- /*BA */ printk("%s: soft reset...\n", DEVICE_NAME);
|
|
|
|
- outb_p(CTRL_SOFT_RESET, ESDI_ATTN);
|
|
|
|
- }
|
|
|
|
- /* soft reset */
|
|
|
|
- else {
|
|
|
|
- /*BA */
|
|
|
|
- printk("%s: hard reset...\n", DEVICE_NAME);
|
|
|
|
- outb_p(CTRL_HARD_RESET, ESDI_CONTROL);
|
|
|
|
- expire = jiffies + 2*HZ;
|
|
|
|
- while (time_before(jiffies, expire));
|
|
|
|
- outb_p(1, ESDI_CONTROL);
|
|
|
|
- } /* hard reset */
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-} /* reset the controller */
|
|
|
|
-
|
|
|
|
-/* called by the strategy routine to handle read and write requests */
|
|
|
|
-static void ps2esdi_readwrite(int cmd, struct request *req)
|
|
|
|
-{
|
|
|
|
- struct ps2esdi_i_struct *p = req->rq_disk->private_data;
|
|
|
|
- unsigned block = req->sector;
|
|
|
|
- unsigned count = req->current_nr_sectors;
|
|
|
|
- int drive = p - ps2esdi_info;
|
|
|
|
- u_short track, head, cylinder, sector;
|
|
|
|
- u_short cmd_blk[TYPE_1_CMD_BLK_LENGTH];
|
|
|
|
-
|
|
|
|
- /* do some relevant arithmatic */
|
|
|
|
- track = block / p->sect;
|
|
|
|
- head = track % p->head;
|
|
|
|
- cylinder = track / p->head;
|
|
|
|
- sector = block % p->sect;
|
|
|
|
-
|
|
|
|
-#if 0
|
|
|
|
- printk("%s: cyl=%d head=%d sect=%d\n", DEVICE_NAME, cylinder, head, sector);
|
|
|
|
-#endif
|
|
|
|
- /* call the routine that actually fills out a command block */
|
|
|
|
- ps2esdi_fill_cmd_block
|
|
|
|
- (cmd_blk,
|
|
|
|
- (cmd == READ) ? CMD_READ : CMD_WRITE,
|
|
|
|
- cylinder, head, sector, count, drive);
|
|
|
|
-
|
|
|
|
- /* send the command block to the controller */
|
|
|
|
- current_req = req;
|
|
|
|
- spin_unlock_irq(&ps2esdi_lock);
|
|
|
|
- if (ps2esdi_out_cmd_blk(cmd_blk)) {
|
|
|
|
- spin_lock_irq(&ps2esdi_lock);
|
|
|
|
- printk("%s: Controller failed\n", DEVICE_NAME);
|
|
|
|
- if ((++req->errors) >= MAX_RETRIES)
|
|
|
|
- end_request(req, FAIL);
|
|
|
|
- }
|
|
|
|
- /* check for failure to put out the command block */
|
|
|
|
- else {
|
|
|
|
- spin_lock_irq(&ps2esdi_lock);
|
|
|
|
-#if 0
|
|
|
|
- printk("%s: waiting for xfer\n", DEVICE_NAME);
|
|
|
|
-#endif
|
|
|
|
- /* turn disk lights on */
|
|
|
|
- LITE_ON;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
-} /* ps2esdi_readwrite */
|
|
|
|
-
|
|
|
|
-/* fill out the command block */
|
|
|
|
-static void ps2esdi_fill_cmd_block(u_short * cmd_blk, u_short cmd,
|
|
|
|
- u_short cyl, u_short head, u_short sector, u_short length, u_char drive)
|
|
|
|
-{
|
|
|
|
-
|
|
|
|
- cmd_blk[0] = (drive << 5) | cmd;
|
|
|
|
- cmd_blk[1] = length;
|
|
|
|
- cmd_blk[2] = ((cyl & 0x1f) << 11) | (head << 5) | sector;
|
|
|
|
- cmd_blk[3] = (cyl & 0x3E0) >> 5;
|
|
|
|
-
|
|
|
|
-} /* fill out the command block */
|
|
|
|
-
|
|
|
|
-/* write a command block to the controller */
|
|
|
|
-static int ps2esdi_out_cmd_blk(u_short * cmd_blk)
|
|
|
|
-{
|
|
|
|
-
|
|
|
|
- int i;
|
|
|
|
- unsigned long jif;
|
|
|
|
- u_char status;
|
|
|
|
-
|
|
|
|
- /* enable interrupts */
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
-
|
|
|
|
- /* do not write to the controller, if it is busy */
|
|
|
|
- for (jif = jiffies + ESDI_STAT_TIMEOUT;
|
|
|
|
- time_after(jif, jiffies) &&
|
|
|
|
- (inb(ESDI_STATUS) & STATUS_BUSY); )
|
|
|
|
- ;
|
|
|
|
-
|
|
|
|
-#if 0
|
|
|
|
- printk("%s: i(1)=%ld\n", DEVICE_NAME, jif);
|
|
|
|
-#endif
|
|
|
|
-
|
|
|
|
- /* if device is still busy - then just time out */
|
|
|
|
- if (inb(ESDI_STATUS) & STATUS_BUSY) {
|
|
|
|
- printk("%s: ps2esdi_out_cmd timed out (1)\n", DEVICE_NAME);
|
|
|
|
- return ERROR;
|
|
|
|
- } /* timeout ??? */
|
|
|
|
- /* Set up the attention register in the controller */
|
|
|
|
- outb(((*cmd_blk) & 0xE0) | 1, ESDI_ATTN);
|
|
|
|
-
|
|
|
|
-#if 0
|
|
|
|
- printk("%s: sending %d words to controller\n", DEVICE_NAME, (((*cmd_blk) >> 14) + 1) << 1);
|
|
|
|
-#endif
|
|
|
|
-
|
|
|
|
- /* one by one send each word out */
|
|
|
|
- for (i = (((*cmd_blk) >> 14) + 1) << 1; i; i--) {
|
|
|
|
- status = inb(ESDI_STATUS);
|
|
|
|
- for (jif = jiffies + ESDI_STAT_TIMEOUT;
|
|
|
|
- time_after(jif, jiffies) && (status & STATUS_BUSY) &&
|
|
|
|
- (status & STATUS_CMD_INF); status = inb(ESDI_STATUS));
|
|
|
|
- if ((status & (STATUS_BUSY | STATUS_CMD_INF)) == STATUS_BUSY) {
|
|
|
|
-#if 0
|
|
|
|
- printk("%s: sending %04X\n", DEVICE_NAME, *cmd_blk);
|
|
|
|
-#endif
|
|
|
|
- outw(*cmd_blk++, ESDI_CMD_INT);
|
|
|
|
- } else {
|
|
|
|
- printk("%s: ps2esdi_out_cmd timed out while sending command (status=%02X)\n",
|
|
|
|
- DEVICE_NAME, status);
|
|
|
|
- return ERROR;
|
|
|
|
- }
|
|
|
|
- } /* send all words out */
|
|
|
|
- return OK;
|
|
|
|
-} /* send out the commands */
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-/* prepare for dma - do all the necessary setup */
|
|
|
|
-static void ps2esdi_prep_dma(char *buffer, u_short length, u_char dma_xmode)
|
|
|
|
-{
|
|
|
|
- unsigned long flags = claim_dma_lock();
|
|
|
|
-
|
|
|
|
- mca_disable_dma(dma_arb_level);
|
|
|
|
-
|
|
|
|
- mca_set_dma_addr(dma_arb_level, isa_virt_to_bus(buffer));
|
|
|
|
-
|
|
|
|
- mca_set_dma_count(dma_arb_level, length * 512 / 2);
|
|
|
|
-
|
|
|
|
- mca_set_dma_mode(dma_arb_level, dma_xmode);
|
|
|
|
-
|
|
|
|
- mca_enable_dma(dma_arb_level);
|
|
|
|
-
|
|
|
|
- release_dma_lock(flags);
|
|
|
|
-
|
|
|
|
-} /* prepare for dma */
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-static irqreturn_t ps2esdi_interrupt_handler(int irq, void *dev_id)
|
|
|
|
-{
|
|
|
|
- u_int int_ret_code;
|
|
|
|
-
|
|
|
|
- if (inb(ESDI_STATUS) & STATUS_INTR) {
|
|
|
|
- int_ret_code = inb(ESDI_INTRPT);
|
|
|
|
- if (current_int_handler) {
|
|
|
|
- /* Disable adapter interrupts till processing is finished */
|
|
|
|
- outb(CTRL_DISABLE_INTR, ESDI_CONTROL);
|
|
|
|
- current_int_handler(int_ret_code);
|
|
|
|
- } else
|
|
|
|
- printk("%s: help ! No interrupt handler.\n", DEVICE_NAME);
|
|
|
|
- } else {
|
|
|
|
- return IRQ_NONE;
|
|
|
|
- }
|
|
|
|
- return IRQ_HANDLED;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-static void ps2esdi_initial_reset_int_handler(u_int int_ret_code)
|
|
|
|
-{
|
|
|
|
-
|
|
|
|
- switch (int_ret_code & 0xf) {
|
|
|
|
- case INT_RESET:
|
|
|
|
- /*BA */
|
|
|
|
- printk("%s: initial reset completed.\n", DEVICE_NAME);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- wake_up(&ps2esdi_int);
|
|
|
|
- break;
|
|
|
|
- case INT_ATTN_ERROR:
|
|
|
|
- printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME,
|
|
|
|
- int_ret_code);
|
|
|
|
- printk("%s: status: %02x\n", DEVICE_NAME, inb(ESDI_STATUS));
|
|
|
|
- break;
|
|
|
|
- default:
|
|
|
|
- printk("%s: initial reset handler received interrupt: %02X\n",
|
|
|
|
- DEVICE_NAME, int_ret_code);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-static void ps2esdi_geometry_int_handler(u_int int_ret_code)
|
|
|
|
-{
|
|
|
|
- u_int status, drive_num;
|
|
|
|
- unsigned long rba;
|
|
|
|
- int i;
|
|
|
|
-
|
|
|
|
- drive_num = int_ret_code >> 5;
|
|
|
|
- switch (int_ret_code & 0xf) {
|
|
|
|
- case INT_CMD_COMPLETE:
|
|
|
|
- for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--);
|
|
|
|
- if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) {
|
|
|
|
- printk("%s: timeout reading status word\n", DEVICE_NAME);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
- status = inw(ESDI_STT_INT);
|
|
|
|
- if ((status & 0x1F) == CMD_GET_DEV_CONFIG) {
|
|
|
|
-#define REPLY_WORDS 5 /* we already read word 0 */
|
|
|
|
- u_short reply[REPLY_WORDS];
|
|
|
|
-
|
|
|
|
- if (ps2esdi_read_status_words((status >> 8) - 1, REPLY_WORDS, reply)) {
|
|
|
|
- /*BA */
|
|
|
|
- printk("%s: Device Configuration Status for drive %u\n",
|
|
|
|
- DEVICE_NAME, drive_num);
|
|
|
|
-
|
|
|
|
- printk("%s: Spares/cyls: %u", DEVICE_NAME, reply[0] >> 8);
|
|
|
|
-
|
|
|
|
- printk
|
|
|
|
- ("Config bits: %s%s%s%s%s\n",
|
|
|
|
- (reply[0] & CONFIG_IS) ? "Invalid Secondary, " : "",
|
|
|
|
- ((reply[0] & CONFIG_ZD) && !(reply[0] & CONFIG_IS))
|
|
|
|
- ? "Zero Defect, " : "Defects Present, ",
|
|
|
|
- (reply[0] & CONFIG_SF) ? "Skewed Format, " : "",
|
|
|
|
- (reply[0] & CONFIG_FR) ? "Removable, " : "Non-Removable, ",
|
|
|
|
- (reply[0] & CONFIG_RT) ? "No Retries" : "Retries");
|
|
|
|
-
|
|
|
|
- rba = reply[1] | ((unsigned long) reply[2] << 16);
|
|
|
|
- printk("%s: Number of RBA's: %lu\n", DEVICE_NAME, rba);
|
|
|
|
-
|
|
|
|
- printk("%s: Physical number of cylinders: %u, Sectors/Track: %u, Heads: %u\n",
|
|
|
|
- DEVICE_NAME, reply[3], reply[4] >> 8, reply[4] & 0xff);
|
|
|
|
-
|
|
|
|
- if (!ps2esdi_info[drive_num].head) {
|
|
|
|
- ps2esdi_info[drive_num].head = 64;
|
|
|
|
- ps2esdi_info[drive_num].sect = 32;
|
|
|
|
- ps2esdi_info[drive_num].cyl = rba / (64 * 32);
|
|
|
|
- ps2esdi_info[drive_num].wpcom = 0;
|
|
|
|
- ps2esdi_info[drive_num].lzone = ps2esdi_info[drive_num].cyl;
|
|
|
|
- ps2esdi_info[drive_num].ctl = 8;
|
|
|
|
- if (tp720esdi) { /* store the retrieved parameters */
|
|
|
|
- ps2esdi_info[0].head = reply[4] & 0Xff;
|
|
|
|
- ps2esdi_info[0].sect = reply[4] >> 8;
|
|
|
|
- ps2esdi_info[0].cyl = reply[3];
|
|
|
|
- ps2esdi_info[0].wpcom = 0;
|
|
|
|
- ps2esdi_info[0].lzone = reply[3];
|
|
|
|
- } else {
|
|
|
|
- if (!intg_esdi)
|
|
|
|
- ps2esdi_drives++;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
-#ifdef OBSOLETE
|
|
|
|
- if (!ps2esdi_info[drive_num].head) {
|
|
|
|
- ps2esdi_info[drive_num].head = reply[4] & 0Xff;
|
|
|
|
- ps2esdi_info[drive_num].sect = reply[4] >> 8;
|
|
|
|
- ps2esdi_info[drive_num].cyl = reply[3];
|
|
|
|
- ps2esdi_info[drive_num].wpcom = 0;
|
|
|
|
- ps2esdi_info[drive_num].lzone = reply[3];
|
|
|
|
- if (tp720esdi) { /* store the retrieved parameters */
|
|
|
|
- ps2esdi_info[0].head = reply[4] & 0Xff;
|
|
|
|
- ps2esdi_info[0].sect = reply[4] >> 8;
|
|
|
|
- ps2esdi_info[0].cyl = reply[3];
|
|
|
|
- ps2esdi_info[0].wpcom = 0;
|
|
|
|
- ps2esdi_info[0].lzone = reply[3];
|
|
|
|
- } else {
|
|
|
|
- ps2esdi_drives++;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
-#endif
|
|
|
|
-
|
|
|
|
- } else
|
|
|
|
- printk("%s: failed while getting device config\n", DEVICE_NAME);
|
|
|
|
-#undef REPLY_WORDS
|
|
|
|
- } else
|
|
|
|
- printk("%s: command %02X unknown by geometry handler\n",
|
|
|
|
- DEVICE_NAME, status & 0x1f);
|
|
|
|
-
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- break;
|
|
|
|
-
|
|
|
|
- case INT_ATTN_ERROR:
|
|
|
|
- printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME,
|
|
|
|
- int_ret_code);
|
|
|
|
- printk("%s: Device not available\n", DEVICE_NAME);
|
|
|
|
- break;
|
|
|
|
- case INT_CMD_ECC:
|
|
|
|
- case INT_CMD_RETRY:
|
|
|
|
- case INT_CMD_ECC_RETRY:
|
|
|
|
- case INT_CMD_WARNING:
|
|
|
|
- case INT_CMD_ABORT:
|
|
|
|
- case INT_CMD_FAILED:
|
|
|
|
- case INT_DMA_ERR:
|
|
|
|
- case INT_CMD_BLK_ERR:
|
|
|
|
- /*BA */ printk("%s: Whaa. Error occurred...\n", DEVICE_NAME);
|
|
|
|
- dump_cmd_complete_status(int_ret_code);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- break;
|
|
|
|
- default:
|
|
|
|
- printk("%s: Unknown interrupt reason: %02X\n",
|
|
|
|
- DEVICE_NAME, int_ret_code & 0xf);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- wake_up(&ps2esdi_int);
|
|
|
|
- no_int_yet = FALSE;
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
-
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-static void ps2esdi_normal_interrupt_handler(u_int int_ret_code)
|
|
|
|
-{
|
|
|
|
- unsigned long flags;
|
|
|
|
- u_int status;
|
|
|
|
- u_int ending;
|
|
|
|
- int i;
|
|
|
|
-
|
|
|
|
- switch (int_ret_code & 0x0f) {
|
|
|
|
- case INT_TRANSFER_REQ:
|
|
|
|
- ps2esdi_prep_dma(current_req->buffer,
|
|
|
|
- current_req->current_nr_sectors,
|
|
|
|
- (rq_data_dir(current_req) == READ)
|
|
|
|
- ? MCA_DMA_MODE_16 | MCA_DMA_MODE_WRITE | MCA_DMA_MODE_XFER
|
|
|
|
- : MCA_DMA_MODE_16 | MCA_DMA_MODE_READ);
|
|
|
|
- outb(CTRL_ENABLE_DMA | CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- ending = -1;
|
|
|
|
- break;
|
|
|
|
-
|
|
|
|
- case INT_ATTN_ERROR:
|
|
|
|
- printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME,
|
|
|
|
- int_ret_code);
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- ending = FAIL;
|
|
|
|
- break;
|
|
|
|
-
|
|
|
|
- case INT_CMD_COMPLETE:
|
|
|
|
- for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--);
|
|
|
|
- if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) {
|
|
|
|
- printk("%s: timeout reading status word\n", DEVICE_NAME);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- if ((++current_req->errors) >= MAX_RETRIES)
|
|
|
|
- ending = FAIL;
|
|
|
|
- else
|
|
|
|
- ending = -1;
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
- status = inw(ESDI_STT_INT);
|
|
|
|
- switch (status & 0x1F) {
|
|
|
|
- case (CMD_READ & 0xff):
|
|
|
|
- case (CMD_WRITE & 0xff):
|
|
|
|
- LITE_OFF;
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- ending = SUCCES;
|
|
|
|
- break;
|
|
|
|
- default:
|
|
|
|
- printk("%s: interrupt for unknown command %02X\n",
|
|
|
|
- DEVICE_NAME, status & 0x1f);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- ending = -1;
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
- break;
|
|
|
|
- case INT_CMD_ECC:
|
|
|
|
- case INT_CMD_RETRY:
|
|
|
|
- case INT_CMD_ECC_RETRY:
|
|
|
|
- LITE_OFF;
|
|
|
|
- dump_cmd_complete_status(int_ret_code);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- ending = SUCCES;
|
|
|
|
- break;
|
|
|
|
- case INT_CMD_WARNING:
|
|
|
|
- case INT_CMD_ABORT:
|
|
|
|
- case INT_CMD_FAILED:
|
|
|
|
- case INT_DMA_ERR:
|
|
|
|
- LITE_OFF;
|
|
|
|
- dump_cmd_complete_status(int_ret_code);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- if ((++current_req->errors) >= MAX_RETRIES)
|
|
|
|
- ending = FAIL;
|
|
|
|
- else
|
|
|
|
- ending = -1;
|
|
|
|
- break;
|
|
|
|
-
|
|
|
|
- case INT_CMD_BLK_ERR:
|
|
|
|
- dump_cmd_complete_status(int_ret_code);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- ending = FAIL;
|
|
|
|
- break;
|
|
|
|
-
|
|
|
|
- case INT_CMD_FORMAT:
|
|
|
|
- printk("%s: huh ? Who issued this format command ?\n"
|
|
|
|
- ,DEVICE_NAME);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- ending = -1;
|
|
|
|
- break;
|
|
|
|
-
|
|
|
|
- case INT_RESET:
|
|
|
|
- /* BA printk("%s: reset completed.\n", DEVICE_NAME) */ ;
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- ending = -1;
|
|
|
|
- break;
|
|
|
|
-
|
|
|
|
- default:
|
|
|
|
- printk("%s: Unknown interrupt reason: %02X\n",
|
|
|
|
- DEVICE_NAME, int_ret_code & 0xf);
|
|
|
|
- outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- ending = -1;
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
- if(ending != -1) {
|
|
|
|
- spin_lock_irqsave(&ps2esdi_lock, flags);
|
|
|
|
- end_request(current_req, ending);
|
|
|
|
- current_req = NULL;
|
|
|
|
- do_ps2esdi_request(ps2esdi_queue);
|
|
|
|
- spin_unlock_irqrestore(&ps2esdi_lock, flags);
|
|
|
|
- }
|
|
|
|
-} /* handle interrupts */
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-static int ps2esdi_read_status_words(int num_words,
|
|
|
|
- int max_words,
|
|
|
|
- u_short * buffer)
|
|
|
|
-{
|
|
|
|
- int i;
|
|
|
|
-
|
|
|
|
- for (; max_words && num_words; max_words--, num_words--, buffer++) {
|
|
|
|
- for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--);
|
|
|
|
- if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) {
|
|
|
|
- printk("%s: timeout reading status word\n", DEVICE_NAME);
|
|
|
|
- return FAIL;
|
|
|
|
- }
|
|
|
|
- *buffer = inw(ESDI_STT_INT);
|
|
|
|
- }
|
|
|
|
- return SUCCES;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-static void dump_cmd_complete_status(u_int int_ret_code)
|
|
|
|
-{
|
|
|
|
-#define WAIT_FOR_STATUS \
|
|
|
|
- for(i=ESDI_TIMEOUT;i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL);i--); \
|
|
|
|
- if(!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) { \
|
|
|
|
- printk("%s: timeout reading status word\n",DEVICE_NAME); \
|
|
|
|
- return; \
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- int i, word_count;
|
|
|
|
- u_short stat_word;
|
|
|
|
- u_long rba;
|
|
|
|
-
|
|
|
|
- printk("%s: Device: %u, interrupt ID: %02X\n",
|
|
|
|
- DEVICE_NAME, int_ret_code >> 5,
|
|
|
|
- int_ret_code & 0xf);
|
|
|
|
-
|
|
|
|
- WAIT_FOR_STATUS;
|
|
|
|
- stat_word = inw(ESDI_STT_INT);
|
|
|
|
- word_count = (stat_word >> 8) - 1;
|
|
|
|
- printk("%s: %u status words, command: %02X\n", DEVICE_NAME, word_count,
|
|
|
|
- stat_word & 0xff);
|
|
|
|
-
|
|
|
|
- if (word_count--) {
|
|
|
|
- WAIT_FOR_STATUS;
|
|
|
|
- stat_word = inw(ESDI_STT_INT);
|
|
|
|
- printk("%s: command status code: %02X, command error code: %02X\n",
|
|
|
|
- DEVICE_NAME, stat_word >> 8, stat_word & 0xff);
|
|
|
|
- }
|
|
|
|
- if (word_count--) {
|
|
|
|
- WAIT_FOR_STATUS;
|
|
|
|
- stat_word = inw(ESDI_STT_INT);
|
|
|
|
- printk("%s: device error code: %s%s%s%s%s,%02X\n", DEVICE_NAME,
|
|
|
|
- (stat_word & 0x1000) ? "Ready, " : "Not Ready, ",
|
|
|
|
- (stat_word & 0x0800) ? "Selected, " : "Not Selected, ",
|
|
|
|
- (stat_word & 0x0400) ? "Write Fault, " : "",
|
|
|
|
- (stat_word & 0x0200) ? "Track 0, " : "",
|
|
|
|
- (stat_word & 0x0100) ? "Seek or command complete, " : "",
|
|
|
|
- stat_word >> 8);
|
|
|
|
- }
|
|
|
|
- if (word_count--) {
|
|
|
|
- WAIT_FOR_STATUS;
|
|
|
|
- stat_word = inw(ESDI_STT_INT);
|
|
|
|
- printk("%s: Blocks to do: %u", DEVICE_NAME, stat_word);
|
|
|
|
- }
|
|
|
|
- if (word_count -= 2) {
|
|
|
|
- WAIT_FOR_STATUS;
|
|
|
|
- rba = inw(ESDI_STT_INT);
|
|
|
|
- WAIT_FOR_STATUS;
|
|
|
|
- rba |= inw(ESDI_STT_INT) << 16;
|
|
|
|
- printk(", Last Cyl: %u Head: %u Sector: %u\n",
|
|
|
|
- (u_short) ((rba & 0x1ff80000) >> 11),
|
|
|
|
- (u_short) ((rba & 0x7E0) >> 5), (u_short) (rba & 0x1f));
|
|
|
|
- } else
|
|
|
|
- printk("\n");
|
|
|
|
-
|
|
|
|
- if (word_count--) {
|
|
|
|
- WAIT_FOR_STATUS;
|
|
|
|
- stat_word = inw(ESDI_STT_INT);
|
|
|
|
- printk("%s: Blocks required ECC: %u", DEVICE_NAME, stat_word);
|
|
|
|
- }
|
|
|
|
- printk("\n");
|
|
|
|
-
|
|
|
|
-#undef WAIT_FOR_STATUS
|
|
|
|
-
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-static int ps2esdi_getgeo(struct block_device *bdev, struct hd_geometry *geo)
|
|
|
|
-{
|
|
|
|
- struct ps2esdi_i_struct *p = bdev->bd_disk->private_data;
|
|
|
|
-
|
|
|
|
- geo->heads = p->head;
|
|
|
|
- geo->sectors = p->sect;
|
|
|
|
- geo->cylinders = p->cyl;
|
|
|
|
- return 0;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-static void ps2esdi_reset_timer(unsigned long unused)
|
|
|
|
-{
|
|
|
|
-
|
|
|
|
- int status;
|
|
|
|
-
|
|
|
|
- status = inb(ESDI_INTRPT);
|
|
|
|
- if ((status & 0xf) == INT_RESET) {
|
|
|
|
- outb((status & 0xe0) | ATT_EOI, ESDI_ATTN);
|
|
|
|
- outb(CTRL_ENABLE_INTR, ESDI_CONTROL);
|
|
|
|
- reset_status = 1;
|
|
|
|
- }
|
|
|
|
- wake_up(&ps2esdi_int);
|
|
|
|
-}
|
|
|