Skip to content

L
linux
Commit d271af5d authored by Jens Axboe's avatar Jens Axboe
Browse files
Options

ide-scsi updates: 

o byte -> u8
o use atapi register definitions
o update to ide-iops changes
o driver->end_request() changes
o update to new ide-dma api
o ->reinit to ->attach
parent 8d37f180
Show whitespace changes
Inline Side-by-side
Showing with 106 additions and 76 deletions
drivers/scsi/ide-scsi.c
View file @ d271af5d
...@@ -33,6 +33,7 @@ ...@@ -33,6 +33,7 @@
#define IDESCSI_VERSION "0.9" #define IDESCSI_VERSION "0.9"
#include <linux/module.h> #include <linux/module.h>
#include <linux/config.h>
#include <linux/types.h> #include <linux/types.h>
#include <linux/string.h> #include <linux/string.h>
#include <linux/kernel.h> #include <linux/kernel.h>
...@@ -61,8 +62,8 @@ typedef struct idescsi_pc_s { ...@@ -61,8 +62,8 @@ typedef struct idescsi_pc_s {
int actually_transferred; /* Bytes actually transferred */ int actually_transferred; /* Bytes actually transferred */
int buffer_size; /* Size of our data buffer */ int buffer_size; /* Size of our data buffer */
struct request *rq; /* The corresponding request */ struct request *rq; /* The corresponding request */
byte *buffer; /* Data buffer */ u8 *buffer; /* Data buffer */
byte *current_position; /* Pointer into the above buffer */ u8 *current_position; /* Pointer into the above buffer */
struct scatterlist *sg; /* Scatter gather table */ struct scatterlist *sg; /* Scatter gather table */
int b_count; /* Bytes transferred from current entry */ int b_count; /* Bytes transferred from current entry */
Scsi_Cmnd *scsi_cmd; /* SCSI command */ Scsi_Cmnd *scsi_cmd; /* SCSI command */
...@@ -95,6 +96,7 @@ typedef struct { ...@@ -95,6 +96,7 @@ typedef struct {
unsigned long flags; /* Status/Action flags */ unsigned long flags; /* Status/Action flags */
unsigned long transform; /* SCSI cmd translation layer */ unsigned long transform; /* SCSI cmd translation layer */
unsigned long log; /* log flags */ unsigned long log; /* log flags */
int id;
} idescsi_scsi_t; } idescsi_scsi_t;
/* /*
...@@ -107,22 +109,16 @@ typedef struct { ...@@ -107,22 +109,16 @@ typedef struct {
*/ */
#define IDESCSI_PC_RQ 90 #define IDESCSI_PC_RQ 90
/*
* Bits of the interrupt reason register.
*/
#define IDESCSI_IREASON_COD 0x1 /* Information transferred is command */
#define IDESCSI_IREASON_IO 0x2 /* The device requests us to read */
static void idescsi_discard_data (ide_drive_t *drive, unsigned int bcount) static void idescsi_discard_data (ide_drive_t *drive, unsigned int bcount)
{ {
while (bcount--) while (bcount--)
IN_BYTE (IDE_DATA_REG); (void) HWIF(drive)->INB(IDE_DATA_REG);
} }
static void idescsi_output_zeros (ide_drive_t *drive, unsigned int bcount) static void idescsi_output_zeros (ide_drive_t *drive, unsigned int bcount)
{ {
while (bcount--) while (bcount--)
OUT_BYTE (0, IDE_DATA_REG); HWIF(drive)->OUTB(0, IDE_DATA_REG);
} }
/* /*
...@@ -202,8 +198,8 @@ static inline void idescsi_transform_pc1 (ide_drive_t *drive, idescsi_pc_t *pc) ...@@ -202,8 +198,8 @@ static inline void idescsi_transform_pc1 (ide_drive_t *drive, idescsi_pc_t *pc)
c[2] = sc[2]; c[2] = sc[2];
new_len = sc[4] + 4; new_len = sc[4] + 4;
c[8] = new_len; c[8] = new_len;
c[9] = sc[5];
c[7] = new_len >> 8; c[7] = new_len >> 8;
c[9] = sc[5];
if (c[0] == MODE_SELECT_10) { if (c[0] == MODE_SELECT_10) {
atapi_buf[1] = scsi_buf[0]; /* Mode data length */ atapi_buf[1] = scsi_buf[0]; /* Mode data length */
atapi_buf[2] = scsi_buf[1]; /* Medium type */ atapi_buf[2] = scsi_buf[1]; /* Medium type */
...@@ -264,7 +260,7 @@ static void hexdump(u8 *x, int len) ...@@ -264,7 +260,7 @@ static void hexdump(u8 *x, int len)
printk("]\n"); printk("]\n");
} }
static int idescsi_end_request (ide_drive_t *drive, int uptodate) static int idescsi_end_request (ide_drive_t *drive, int uptodate, int nrsecs)
{ {
idescsi_scsi_t *scsi = drive->driver_data; idescsi_scsi_t *scsi = drive->driver_data;
struct request *rq = HWGROUP(drive)->rq; struct request *rq = HWGROUP(drive)->rq;
...@@ -275,7 +271,7 @@ static int idescsi_end_request (ide_drive_t *drive, int uptodate) ...@@ -275,7 +271,7 @@ static int idescsi_end_request (ide_drive_t *drive, int uptodate)
unsigned long flags; unsigned long flags;
if (!(rq->flags & REQ_SPECIAL)) { if (!(rq->flags & REQ_SPECIAL)) {
ide_end_request(drive, uptodate); ide_end_request(drive, uptodate, nrsecs);
return 0; return 0;
} }
ide_end_drive_cmd (drive, 0, 0); ide_end_drive_cmd (drive, 0, 0);
...@@ -303,8 +299,9 @@ static int idescsi_end_request (ide_drive_t *drive, int uptodate) ...@@ -303,8 +299,9 @@ static int idescsi_end_request (ide_drive_t *drive, int uptodate)
spin_lock_irqsave(host->host_lock, flags); spin_lock_irqsave(host->host_lock, flags);
pc->done(pc->scsi_cmd); pc->done(pc->scsi_cmd);
spin_unlock_irqrestore(host->host_lock, flags); spin_unlock_irqrestore(host->host_lock, flags);
idescsi_free_bio (rq->bio); idescsi_free_bio(rq->bio);
kfree(pc); kfree(rq); kfree(pc);
kfree(rq);
scsi->pc = NULL; scsi->pc = NULL;
return 0; return 0;
} }
...@@ -320,10 +317,13 @@ static inline unsigned long get_timeout(idescsi_pc_t *pc) ...@@ -320,10 +317,13 @@ static inline unsigned long get_timeout(idescsi_pc_t *pc)
static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
{ {
idescsi_scsi_t *scsi = drive->driver_data; idescsi_scsi_t *scsi = drive->driver_data;
byte status, ireason;
int bcount;
idescsi_pc_t *pc=scsi->pc; idescsi_pc_t *pc=scsi->pc;
struct request *rq = pc->rq; struct request *rq = pc->rq;
atapi_bcount_t bcount;
atapi_status_t status;
atapi_ireason_t ireason;
atapi_feature_t feature;
unsigned int temp; unsigned int temp;
#if IDESCSI_DEBUG_LOG #if IDESCSI_DEBUG_LOG
...@@ -335,32 +335,38 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) ...@@ -335,32 +335,38 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
printk ("ide-scsi: %s: DMA complete\n", drive->name); printk ("ide-scsi: %s: DMA complete\n", drive->name);
#endif /* IDESCSI_DEBUG_LOG */ #endif /* IDESCSI_DEBUG_LOG */
pc->actually_transferred=pc->request_transfer; pc->actually_transferred=pc->request_transfer;
(void) (HWIF(drive)->dmaproc(ide_dma_end, drive)); (void) HWIF(drive)->ide_dma_end(drive);
} }
status = GET_STAT(); /* Clear the interrupt */ feature.all = 0;
/* Clear the interrupt */
status.all = HWIF(drive)->INB(IDE_STATUS_REG);
if ((status & DRQ_STAT) == 0) { /* No more interrupts */ if (!status.b.drq) {
/* No more interrupts */
if (test_bit(IDESCSI_LOG_CMD, &scsi->log)) if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
printk (KERN_INFO "Packet command completed, %d bytes transferred\n", pc->actually_transferred); printk (KERN_INFO "Packet command completed, %d bytes transferred\n", pc->actually_transferred);
local_irq_enable(); local_irq_enable();
if (status & ERR_STAT) if (status.b.check)
rq->errors++; rq->errors++;
idescsi_end_request (drive, 1); idescsi_end_request (drive, 1, 0);
return ide_stopped; return ide_stopped;
} }
bcount = IN_BYTE (IDE_BCOUNTH_REG) << 8 | IN_BYTE (IDE_BCOUNTL_REG); bcount.b.low = HWIF(drive)->INB(IDE_BCOUNTL_REG);
ireason = IN_BYTE (IDE_IREASON_REG); bcount.b.high = HWIF(drive)->INB(IDE_BCOUNTH_REG);
ireason.all = HWIF(drive)->INB(IDE_IREASON_REG);
if (ireason & IDESCSI_IREASON_COD) { if (ireason.b.cod) {
printk (KERN_ERR "ide-scsi: CoD != 0 in idescsi_pc_intr\n"); printk(KERN_ERR "ide-scsi: CoD != 0 in idescsi_pc_intr\n");
return ide_do_reset (drive); return ide_do_reset (drive);
} }
if (ireason & IDESCSI_IREASON_IO) { if (ireason.b.io) {
temp = pc->actually_transferred + bcount; temp = pc->actually_transferred + bcount.all;
if ( temp > pc->request_transfer) { if (temp > pc->request_transfer) {
if (temp > pc->buffer_size) { if (temp > pc->buffer_size) {
printk (KERN_ERR "ide-scsi: The scsi wants to send us more data than expected - discarding data\n"); printk(KERN_ERR "ide-scsi: The scsi wants to "
"send us more data than expected "
"- discarding data\n");
temp = pc->buffer_size - pc->actually_transferred; temp = pc->buffer_size - pc->actually_transferred;
if (temp) { if (temp) {
clear_bit(PC_WRITING, &pc->flags); clear_bit(PC_WRITING, &pc->flags);
...@@ -368,11 +374,11 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) ...@@ -368,11 +374,11 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
idescsi_input_buffers(drive, pc, temp); idescsi_input_buffers(drive, pc, temp);
else else
atapi_input_bytes(drive, pc->current_position, temp); atapi_input_bytes(drive, pc->current_position, temp);
printk(KERN_ERR "ide-scsi: transferred %d of %d bytes\n", temp, bcount); printk(KERN_ERR "ide-scsi: transferred %d of %d bytes\n", temp, bcount.all);
} }
pc->actually_transferred += temp; pc->actually_transferred += temp;
pc->current_position += temp; pc->current_position += temp;
idescsi_discard_data (drive,bcount - temp); idescsi_discard_data(drive, bcount.all - temp);
ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), NULL); ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), NULL);
return ide_started; return ide_started;
} }
...@@ -381,44 +387,51 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) ...@@ -381,44 +387,51 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
#endif /* IDESCSI_DEBUG_LOG */ #endif /* IDESCSI_DEBUG_LOG */
} }
} }
if (ireason & IDESCSI_IREASON_IO) { if (ireason.b.io) {
clear_bit(PC_WRITING, &pc->flags); clear_bit(PC_WRITING, &pc->flags);
if (pc->sg) if (pc->sg)
idescsi_input_buffers (drive, pc, bcount); idescsi_input_buffers(drive, pc, bcount.all);
else else
atapi_input_bytes (drive,pc->current_position,bcount); HWIF(drive)->atapi_input_bytes(drive, pc->current_position, bcount.all);
} else { } else {
set_bit(PC_WRITING, &pc->flags); set_bit(PC_WRITING, &pc->flags);
if (pc->sg) if (pc->sg)
idescsi_output_buffers (drive, pc, bcount); idescsi_output_buffers (drive, pc, bcount.all);
else else
atapi_output_bytes (drive,pc->current_position,bcount); HWIF(drive)->atapi_output_bytes(drive, pc->current_position, bcount.all);
} }
pc->actually_transferred+=bcount; /* Update the current position */ /* Update the current position */
pc->current_position+=bcount; pc->actually_transferred += bcount.all;
pc->current_position += bcount.all;
ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), NULL); /* And set the interrupt handler again */ ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), NULL); /* And set the interrupt handler again */
return ide_started; return ide_started;
} }
static ide_startstop_t idescsi_transfer_pc (ide_drive_t *drive) static ide_startstop_t idescsi_transfer_pc(ide_drive_t *drive)
{ {
idescsi_scsi_t *scsi = drive->driver_data; idescsi_scsi_t *scsi = drive->driver_data;
idescsi_pc_t *pc = scsi->pc; idescsi_pc_t *pc = scsi->pc;
byte ireason; atapi_ireason_t ireason;
ide_startstop_t startstop; ide_startstop_t startstop;
if (ide_wait_stat (&startstop,drive,DRQ_STAT,BUSY_STAT,WAIT_READY)) { if (ide_wait_stat(&startstop,drive,DRQ_STAT,BUSY_STAT,WAIT_READY)) {
printk (KERN_ERR "ide-scsi: Strange, packet command initiated yet DRQ isn't asserted\n"); printk(KERN_ERR "ide-scsi: Strange, packet command "
"initiated yet DRQ isn't asserted\n");
return startstop; return startstop;
} }
ireason = IN_BYTE (IDE_IREASON_REG); ireason.all = HWIF(drive)->INB(IDE_IREASON_REG);
if ((ireason & (IDESCSI_IREASON_IO | IDESCSI_IREASON_COD)) != IDESCSI_IREASON_COD) { if (!ireason.b.cod || ireason.b.io) {
printk (KERN_ERR "ide-scsi: (IO,CoD) != (0,1) while issuing a packet command\n"); printk(KERN_ERR "ide-scsi: (IO,CoD) != (0,1) while "
"issuing a packet command\n");
return ide_do_reset (drive); return ide_do_reset (drive);
} }
ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), NULL); /* Set the interrupt routine */ if (HWGROUP(drive)->handler != NULL)
atapi_output_bytes (drive, scsi->pc->c, 12); /* Send the actual packet */ BUG();
/* Set the interrupt routine */
ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), NULL);
/* Send the actual packet */
atapi_output_bytes(drive, scsi->pc->c, 12);
return ide_started; return ide_started;
} }
...@@ -428,36 +441,46 @@ static ide_startstop_t idescsi_transfer_pc (ide_drive_t *drive) ...@@ -428,36 +441,46 @@ static ide_startstop_t idescsi_transfer_pc (ide_drive_t *drive)
static ide_startstop_t idescsi_issue_pc (ide_drive_t *drive, idescsi_pc_t *pc) static ide_startstop_t idescsi_issue_pc (ide_drive_t *drive, idescsi_pc_t *pc)
{ {
idescsi_scsi_t *scsi = drive->driver_data; idescsi_scsi_t *scsi = drive->driver_data;
int bcount; atapi_feature_t feature;
atapi_bcount_t bcount;
struct request *rq = pc->rq; struct request *rq = pc->rq;
int dma_ok = 0;
scsi->pc=pc; /* Set the current packet command */ scsi->pc=pc; /* Set the current packet command */
pc->actually_transferred=0; /* We haven't transferred any data yet */ pc->actually_transferred=0; /* We haven't transferred any data yet */
pc->current_position=pc->buffer; pc->current_position=pc->buffer;
bcount = IDE_MIN (pc->request_transfer, 63 * 1024); /* Request to transfer the entire buffer at once */ bcount.all = IDE_MIN(pc->request_transfer, 63 * 1024); /* Request to transfer the entire buffer at once */
if (drive->using_dma && rq->bio) if (drive->using_dma && rq->bio) {
dma_ok=!HWIF(drive)->dmaproc(test_bit (PC_WRITING, &pc->flags) ? ide_dma_write : ide_dma_read, drive); if (test_bit(PC_WRITING, &pc->flags))
feature.b.dma = !HWIF(drive)->ide_dma_write(drive);
else
feature.b.dma = !HWIF(drive)->ide_dma_read(drive);
}
SELECT_DRIVE(HWIF(drive), drive); SELECT_DRIVE(drive);
if (IDE_CONTROL_REG) if (IDE_CONTROL_REG)
OUT_BYTE (drive->ctl,IDE_CONTROL_REG); HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
OUT_BYTE (dma_ok,IDE_FEATURE_REG);
OUT_BYTE (bcount >> 8,IDE_BCOUNTH_REG); HWIF(drive)->OUTB(feature.all, IDE_FEATURE_REG);
OUT_BYTE (bcount & 0xff,IDE_BCOUNTL_REG); HWIF(drive)->OUTB(bcount.b.high, IDE_BCOUNTH_REG);
HWIF(drive)->OUTB(bcount.b.low, IDE_BCOUNTL_REG);
if (dma_ok) {
set_bit (PC_DMA_IN_PROGRESS, &pc->flags); if (feature.b.dma) {
(void) (HWIF(drive)->dmaproc(ide_dma_begin, drive)); set_bit(PC_DMA_IN_PROGRESS, &pc->flags);
} (void) (HWIF(drive)->ide_dma_begin(drive));
if (test_bit (IDESCSI_DRQ_INTERRUPT, &scsi->flags)) { }
ide_set_handler (drive, &idescsi_transfer_pc, get_timeout(pc), NULL); if (test_bit(IDESCSI_DRQ_INTERRUPT, &scsi->flags)) {
OUT_BYTE (WIN_PACKETCMD, IDE_COMMAND_REG); /* Issue the packet command */ if (HWGROUP(drive)->handler != NULL)
BUG();
ide_set_handler(drive, &idescsi_transfer_pc,
get_timeout(pc), NULL);
/* Issue the packet command */
HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG);
return ide_started; return ide_started;
} else { } else {
OUT_BYTE (WIN_PACKETCMD, IDE_COMMAND_REG); /* Issue the packet command */
return idescsi_transfer_pc (drive); HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG);
return idescsi_transfer_pc(drive);
} }
} }
...@@ -475,11 +498,17 @@ static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *r ...@@ -475,11 +498,17 @@ static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *r
return idescsi_issue_pc (drive, (idescsi_pc_t *) rq->special); return idescsi_issue_pc (drive, (idescsi_pc_t *) rq->special);
} }
blk_dump_rq_flags(rq, "ide-scsi: unsup command"); blk_dump_rq_flags(rq, "ide-scsi: unsup command");
idescsi_end_request (drive, 0); idescsi_end_request (drive, 0, 0);
return ide_stopped; return ide_stopped;
} }
static int idescsi_open (struct inode *inode, struct file *filp, ide_drive_t *drive) static int idescsi_do_ioctl (ide_drive_t *drive, struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
/* need to figure out how to parse scsi-atapi media type */
return -ENOTTY;
}
static int idescsi_ide_open (struct inode *inode, struct file *filp, ide_drive_t *drive)
{ {
MOD_INC_USE_COUNT; MOD_INC_USE_COUNT;
return 0; return 0;
...@@ -517,6 +546,7 @@ static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi, int id) ...@@ -517,6 +546,7 @@ static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi, int id)
drive->ready_stat = 0; drive->ready_stat = 0;
memset (scsi, 0, sizeof (idescsi_scsi_t)); memset (scsi, 0, sizeof (idescsi_scsi_t));
scsi->drive = drive; scsi->drive = drive;
scsi->id = id;
if (drive->id && (drive->id->config & 0x0060) == 0x20) if (drive->id && (drive->id->config & 0x0060) == 0x20)
set_bit (IDESCSI_DRQ_INTERRUPT, &scsi->flags); set_bit (IDESCSI_DRQ_INTERRUPT, &scsi->flags);
set_bit(IDESCSI_TRANSFORM, &scsi->transform); set_bit(IDESCSI_TRANSFORM, &scsi->transform);
...@@ -531,14 +561,14 @@ static int idescsi_cleanup (ide_drive_t *drive) ...@@ -531,14 +561,14 @@ static int idescsi_cleanup (ide_drive_t *drive)
{ {
idescsi_scsi_t *scsi = drive->driver_data; idescsi_scsi_t *scsi = drive->driver_data;
if (ide_unregister_subdriver (drive)) if (ide_unregister_subdriver(drive))
return 1; return 1;
drive->driver_data = NULL; drive->driver_data = NULL;
kfree (scsi); kfree(scsi);
return 0; return 0;
} }
static int idescsi_reinit(ide_drive_t *drive); static int idescsi_attach(ide_drive_t *drive);
/* /*
* IDE subdriver functions, registered with ide.c * IDE subdriver functions, registered with ide.c
...@@ -551,14 +581,14 @@ static ide_driver_t idescsi_driver = { ...@@ -551,14 +581,14 @@ static ide_driver_t idescsi_driver = {
busy: 0, busy: 0,
supports_dma: 1, supports_dma: 1,
supports_dsc_overlap: 0, supports_dsc_overlap: 0,
reinit: idescsi_reinit, attach: idescsi_attach,
cleanup: idescsi_cleanup, cleanup: idescsi_cleanup,
standby: NULL, standby: NULL,
flushcache: NULL, flushcache: NULL,
do_request: idescsi_do_request, do_request: idescsi_do_request,
end_request: idescsi_end_request, end_request: idescsi_end_request,
ioctl: NULL, ioctl: idescsi_do_ioctl,
open: idescsi_open, open: idescsi_ide_open,
release: idescsi_ide_release, release: idescsi_ide_release,
media_change: NULL, media_change: NULL,
revalidate: NULL, revalidate: NULL,
...@@ -569,7 +599,7 @@ static ide_driver_t idescsi_driver = { ...@@ -569,7 +599,7 @@ static ide_driver_t idescsi_driver = {
drives: LIST_HEAD_INIT(idescsi_driver.drives), drives: LIST_HEAD_INIT(idescsi_driver.drives),
}; };
static int idescsi_reinit(ide_drive_t *drive) static int idescsi_attach(ide_drive_t *drive)
{ {
idescsi_scsi_t *scsi; idescsi_scsi_t *scsi;
int id; int id;
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7