libata-sff.c (c43d559f0423816bb2918d892131d21c51816c3d) libata-sff.c (97750cebb3000a9cc08f8ce8dc8c7143be7d7201)
1/*
2 * libata-sff.c - helper library for PCI IDE BMDMA
3 *
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
6 * on emails.
7 *
8 * Copyright 2003-2006 Red Hat, Inc. All rights reserved.

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217 unsigned long timer_start, timeout;
218 u8 status;
219
220 status = ata_sff_busy_wait(ap, ATA_BUSY, 300);
221 timer_start = jiffies;
222 timeout = ata_deadline(timer_start, tmout_pat);
223 while (status != 0xff && (status & ATA_BUSY) &&
224 time_before(jiffies, timeout)) {
1/*
2 * libata-sff.c - helper library for PCI IDE BMDMA
3 *
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
6 * on emails.
7 *
8 * Copyright 2003-2006 Red Hat, Inc. All rights reserved.

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217 unsigned long timer_start, timeout;
218 u8 status;
219
220 status = ata_sff_busy_wait(ap, ATA_BUSY, 300);
221 timer_start = jiffies;
222 timeout = ata_deadline(timer_start, tmout_pat);
223 while (status != 0xff && (status & ATA_BUSY) &&
224 time_before(jiffies, timeout)) {
225 msleep(50);
225 ata_msleep(ap, 50);
226 status = ata_sff_busy_wait(ap, ATA_BUSY, 3);
227 }
228
229 if (status != 0xff && (status & ATA_BUSY))
230 ata_port_printk(ap, KERN_WARNING,
231 "port is slow to respond, please be patient "
232 "(Status 0x%x)\n", status);
233
234 timeout = ata_deadline(timer_start, tmout);
235 while (status != 0xff && (status & ATA_BUSY) &&
236 time_before(jiffies, timeout)) {
226 status = ata_sff_busy_wait(ap, ATA_BUSY, 3);
227 }
228
229 if (status != 0xff && (status & ATA_BUSY))
230 ata_port_printk(ap, KERN_WARNING,
231 "port is slow to respond, please be patient "
232 "(Status 0x%x)\n", status);
233
234 timeout = ata_deadline(timer_start, tmout);
235 while (status != 0xff && (status & ATA_BUSY) &&
236 time_before(jiffies, timeout)) {
237 msleep(50);
237 ata_msleep(ap, 50);
238 status = ap->ops->sff_check_status(ap);
239 }
240
241 if (status == 0xff)
242 return -ENODEV;
243
244 if (status & ATA_BUSY) {
245 ata_port_printk(ap, KERN_ERR, "port failed to respond "

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355
356 if (wait)
357 ata_wait_idle(ap);
358
359 ap->ops->sff_dev_select(ap, device);
360
361 if (wait) {
362 if (can_sleep && ap->link.device[device].class == ATA_DEV_ATAPI)
238 status = ap->ops->sff_check_status(ap);
239 }
240
241 if (status == 0xff)
242 return -ENODEV;
243
244 if (status & ATA_BUSY) {
245 ata_port_printk(ap, KERN_ERR, "port failed to respond "

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355
356 if (wait)
357 ata_wait_idle(ap);
358
359 ap->ops->sff_dev_select(ap, device);
360
361 if (wait) {
362 if (can_sleep && ap->link.device[device].class == ATA_DEV_ATAPI)
363 msleep(150);
363 ata_msleep(ap, 150);
364 ata_wait_idle(ap);
365 }
366}
367
368/**
369 * ata_sff_irq_on - Enable interrupts on a port.
370 * @ap: Port on which interrupts are enabled.
371 *

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1351 * This is purely heuristic. This is a fast path.
1352 * Sometimes when we enter, BSY will be cleared in
1353 * a chk-status or two. If not, the drive is probably seeking
1354 * or something. Snooze for a couple msecs, then
1355 * chk-status again. If still busy, queue delayed work.
1356 */
1357 status = ata_sff_busy_wait(ap, ATA_BUSY, 5);
1358 if (status & ATA_BUSY) {
364 ata_wait_idle(ap);
365 }
366}
367
368/**
369 * ata_sff_irq_on - Enable interrupts on a port.
370 * @ap: Port on which interrupts are enabled.
371 *

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1351 * This is purely heuristic. This is a fast path.
1352 * Sometimes when we enter, BSY will be cleared in
1353 * a chk-status or two. If not, the drive is probably seeking
1354 * or something. Snooze for a couple msecs, then
1355 * chk-status again. If still busy, queue delayed work.
1356 */
1357 status = ata_sff_busy_wait(ap, ATA_BUSY, 5);
1358 if (status & ATA_BUSY) {
1359 msleep(2);
1359 ata_msleep(ap, 2);
1360 status = ata_sff_busy_wait(ap, ATA_BUSY, 10);
1361 if (status & ATA_BUSY) {
1362 ata_sff_queue_pio_task(link, ATA_SHORT_PAUSE);
1363 return;
1364 }
1365 }
1366
1367 /*

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1932 unsigned long deadline)
1933{
1934 struct ata_port *ap = link->ap;
1935 struct ata_ioports *ioaddr = &ap->ioaddr;
1936 unsigned int dev0 = devmask & (1 << 0);
1937 unsigned int dev1 = devmask & (1 << 1);
1938 int rc, ret = 0;
1939
1360 status = ata_sff_busy_wait(ap, ATA_BUSY, 10);
1361 if (status & ATA_BUSY) {
1362 ata_sff_queue_pio_task(link, ATA_SHORT_PAUSE);
1363 return;
1364 }
1365 }
1366
1367 /*

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1932 unsigned long deadline)
1933{
1934 struct ata_port *ap = link->ap;
1935 struct ata_ioports *ioaddr = &ap->ioaddr;
1936 unsigned int dev0 = devmask & (1 << 0);
1937 unsigned int dev1 = devmask & (1 << 1);
1938 int rc, ret = 0;
1939
1940 msleep(ATA_WAIT_AFTER_RESET);
1940 ata_msleep(ap, ATA_WAIT_AFTER_RESET);
1941
1942 /* always check readiness of the master device */
1943 rc = ata_sff_wait_ready(link, deadline);
1944 /* -ENODEV means the odd clown forgot the D7 pulldown resistor
1945 * and TF status is 0xff, bail out on it too.
1946 */
1947 if (rc)
1948 return rc;

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1961 */
1962 for (i = 0; i < 2; i++) {
1963 u8 nsect, lbal;
1964
1965 nsect = ioread8(ioaddr->nsect_addr);
1966 lbal = ioread8(ioaddr->lbal_addr);
1967 if ((nsect == 1) && (lbal == 1))
1968 break;
1941
1942 /* always check readiness of the master device */
1943 rc = ata_sff_wait_ready(link, deadline);
1944 /* -ENODEV means the odd clown forgot the D7 pulldown resistor
1945 * and TF status is 0xff, bail out on it too.
1946 */
1947 if (rc)
1948 return rc;

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1961 */
1962 for (i = 0; i < 2; i++) {
1963 u8 nsect, lbal;
1964
1965 nsect = ioread8(ioaddr->nsect_addr);
1966 lbal = ioread8(ioaddr->lbal_addr);
1967 if ((nsect == 1) && (lbal == 1))
1968 break;
1969 msleep(50); /* give drive a breather */
1969 ata_msleep(ap, 50); /* give drive a breather */
1970 }
1971
1972 rc = ata_sff_wait_ready(link, deadline);
1973 if (rc) {
1974 if (rc != -ENODEV)
1975 return rc;
1976 ret = rc;
1977 }

--- 1371 unchanged lines hidden --- 		1970 }
1971
1972 rc = ata_sff_wait_ready(link, deadline);
1973 if (rc) {
1974 if (rc != -ENODEV)
1975 return rc;
1976 ret = rc;
1977 }

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