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path: root/drivers/scsi/wd33c93.c
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Diffstat (limited to 'drivers/scsi/wd33c93.c')
-rw-r--r--drivers/scsi/wd33c93.c546
1 files changed, 338 insertions, 208 deletions
diff --git a/drivers/scsi/wd33c93.c b/drivers/scsi/wd33c93.c
index fb53eeaee61..41883a87931 100644
--- a/drivers/scsi/wd33c93.c
+++ b/drivers/scsi/wd33c93.c
@@ -69,28 +69,35 @@
* Added support for pre -A chips, which don't have advanced features
* and will generate CSR_RESEL rather than CSR_RESEL_AM.
* Richard Hirst <richard@sleepie.demon.co.uk> August 2000
+ *
+ * Added support for Burst Mode DMA and Fast SCSI. Enabled the use of
+ * default_sx_per for asynchronous data transfers. Added adjustment
+ * of transfer periods in sx_table to the actual input-clock.
+ * peter fuerst <post@pfrst.de> February 2007
*/
-#include <linux/config.h>
#include <linux/module.h>
-#include <linux/sched.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <linux/init.h>
+#include <linux/interrupt.h>
#include <linux/blkdev.h>
-#include <asm/irq.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
+#include <asm/irq.h>
+
#include "wd33c93.h"
+#define optimum_sx_per(hostdata) (hostdata)->sx_table[1].period_ns
-#define WD33C93_VERSION "1.26"
-#define WD33C93_DATE "22/Feb/2003"
+
+#define WD33C93_VERSION "1.26++"
+#define WD33C93_DATE "10/Feb/2007"
MODULE_AUTHOR("John Shifflett");
MODULE_DESCRIPTION("Generic WD33C93 SCSI driver");
@@ -124,6 +131,13 @@ MODULE_LICENSE("GPL");
* defines in wd33c93.h
* - clock:x -x = clock input in MHz for WD33c93 chip. Normal values
* would be from 8 through 20. Default is 8.
+ * - burst:x -x = 1 to use Burst Mode (or Demand-Mode) DMA, x = 0 to use
+ * Single Byte DMA, which is the default. Argument is
+ * optional - if not present, same as "burst:1".
+ * - fast:x -x = 1 to enable Fast SCSI, which is only effective with
+ * input-clock divisor 4 (WD33C93_FS_16_20), x = 0 to disable
+ * it, which is the default. Argument is optional - if not
+ * present, same as "fast:1".
* - next -No argument. Used to separate blocks of keywords when
* there's more than one host adapter in the system.
*
@@ -150,7 +164,7 @@ MODULE_LICENSE("GPL");
*/
/* Normally, no defaults are specified */
-static char *setup_args[] = { "", "", "", "", "", "", "", "", "" };
+static char *setup_args[] = { "", "", "", "", "", "", "", "", "", "" };
static char *setup_strings;
module_param(setup_strings, charp, 0);
@@ -300,20 +314,8 @@ read_1_byte(const wd33c93_regs regs)
return x;
}
-static struct sx_period sx_table[] = {
- {1, 0x20},
- {252, 0x20},
- {376, 0x30},
- {500, 0x40},
- {624, 0x50},
- {752, 0x60},
- {876, 0x70},
- {1000, 0x00},
- {0, 0}
-};
-
static int
-round_period(unsigned int period)
+round_period(unsigned int period, const struct sx_period *sx_table)
{
int x;
@@ -326,19 +328,51 @@ round_period(unsigned int period)
return 7;
}
+/*
+ * Calculate Synchronous Transfer Register value from SDTR code.
+ */
static uchar
-calc_sync_xfer(unsigned int period, unsigned int offset)
+calc_sync_xfer(unsigned int period, unsigned int offset, unsigned int fast,
+ const struct sx_period *sx_table)
{
+ /* When doing Fast SCSI synchronous data transfers, the corresponding
+ * value in 'sx_table' is two times the actually used transfer period.
+ */
uchar result;
+ if (offset && fast) {
+ fast = STR_FSS;
+ period *= 2;
+ } else {
+ fast = 0;
+ }
period *= 4; /* convert SDTR code to ns */
- result = sx_table[round_period(period)].reg_value;
+ result = sx_table[round_period(period,sx_table)].reg_value;
result |= (offset < OPTIMUM_SX_OFF) ? offset : OPTIMUM_SX_OFF;
+ result |= fast;
return result;
}
-int
-wd33c93_queuecommand(struct scsi_cmnd *cmd,
+/*
+ * Calculate SDTR code bytes [3],[4] from period and offset.
+ */
+static inline void
+calc_sync_msg(unsigned int period, unsigned int offset, unsigned int fast,
+ uchar msg[2])
+{
+ /* 'period' is a "normal"-mode value, like the ones in 'sx_table'. The
+ * actually used transfer period for Fast SCSI synchronous data
+ * transfers is half that value.
+ */
+ period /= 4;
+ if (offset && fast)
+ period /= 2;
+ msg[0] = period;
+ msg[1] = offset;
+}
+
+static int
+wd33c93_queuecommand_lck(struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *))
{
struct WD33C93_hostdata *hostdata;
@@ -347,7 +381,7 @@ wd33c93_queuecommand(struct scsi_cmnd *cmd,
hostdata = (struct WD33C93_hostdata *) cmd->device->host->hostdata;
DB(DB_QUEUE_COMMAND,
- printk("Q-%d-%02x-%ld( ", cmd->device->id, cmd->cmnd[0], cmd->pid))
+ printk("Q-%d-%02x( ", cmd->device->id, cmd->cmnd[0]))
/* Set up a few fields in the scsi_cmnd structure for our own use:
* - host_scribble is the pointer to the next cmd in the input queue
@@ -373,17 +407,16 @@ wd33c93_queuecommand(struct scsi_cmnd *cmd,
* - SCp.phase records this command's SRCID_ER bit setting
*/
- if (cmd->use_sg) {
- cmd->SCp.buffer = (struct scatterlist *) cmd->buffer;
- cmd->SCp.buffers_residual = cmd->use_sg - 1;
- cmd->SCp.ptr = page_address(cmd->SCp.buffer->page) +
- cmd->SCp.buffer->offset;
+ if (scsi_bufflen(cmd)) {
+ cmd->SCp.buffer = scsi_sglist(cmd);
+ cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
+ cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
cmd->SCp.this_residual = cmd->SCp.buffer->length;
} else {
cmd->SCp.buffer = NULL;
cmd->SCp.buffers_residual = 0;
- cmd->SCp.ptr = (char *) cmd->request_buffer;
- cmd->SCp.this_residual = cmd->request_bufflen;
+ cmd->SCp.ptr = NULL;
+ cmd->SCp.this_residual = 0;
}
/* WD docs state that at the conclusion of a "LEVEL2" command, the
@@ -429,12 +462,14 @@ wd33c93_queuecommand(struct scsi_cmnd *cmd,
wd33c93_execute(cmd->device->host);
- DB(DB_QUEUE_COMMAND, printk(")Q-%ld ", cmd->pid))
+ DB(DB_QUEUE_COMMAND, printk(")Q "))
spin_unlock_irq(&hostdata->lock);
return 0;
}
+DEF_SCSI_QCMD(wd33c93_queuecommand)
+
/*
* This routine attempts to start a scsi command. If the host_card is
* already connected, we give up immediately. Otherwise, look through
@@ -634,7 +669,7 @@ wd33c93_execute(struct Scsi_Host *instance)
write_wd33c93_count(regs,
cmd->SCp.this_residual);
write_wd33c93(regs, WD_CONTROL,
- CTRL_IDI | CTRL_EDI | CTRL_DMA);
+ CTRL_IDI | CTRL_EDI | hostdata->dma_mode);
hostdata->dma = D_DMA_RUNNING;
}
} else
@@ -652,7 +687,7 @@ wd33c93_execute(struct Scsi_Host *instance)
*/
DB(DB_EXECUTE,
- printk("%s%ld)EX-2 ", (cmd->SCp.phase) ? "d:" : "", cmd->pid))
+ printk("%s)EX-2 ", (cmd->SCp.phase) ? "d:" : ""))
}
static void
@@ -711,9 +746,10 @@ transfer_bytes(const wd33c93_regs regs, struct scsi_cmnd *cmd,
++cmd->SCp.buffer;
--cmd->SCp.buffers_residual;
cmd->SCp.this_residual = cmd->SCp.buffer->length;
- cmd->SCp.ptr = page_address(cmd->SCp.buffer->page) +
- cmd->SCp.buffer->offset;
+ cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
}
+ if (!cmd->SCp.this_residual) /* avoid bogus setups */
+ return;
write_wd33c93(regs, WD_SYNCHRONOUS_TRANSFER,
hostdata->sync_xfer[cmd->device->id]);
@@ -746,7 +782,7 @@ transfer_bytes(const wd33c93_regs regs, struct scsi_cmnd *cmd,
#ifdef PROC_STATISTICS
hostdata->dma_cnt++;
#endif
- write_wd33c93(regs, WD_CONTROL, CTRL_IDI | CTRL_EDI | CTRL_DMA);
+ write_wd33c93(regs, WD_CONTROL, CTRL_IDI | CTRL_EDI | hostdata->dma_mode);
write_wd33c93_count(regs, cmd->SCp.this_residual);
if ((hostdata->level2 >= L2_DATA) ||
@@ -864,9 +900,6 @@ wd33c93_intr(struct Scsi_Host *instance)
hostdata->outgoing_msg[0] |= 0x40;
if (hostdata->sync_stat[cmd->device->id] == SS_FIRST) {
-#ifdef SYNC_DEBUG
- printk(" sending SDTR ");
-#endif
hostdata->sync_stat[cmd->device->id] = SS_WAITING;
@@ -880,14 +913,20 @@ wd33c93_intr(struct Scsi_Host *instance)
hostdata->outgoing_msg[2] = 3;
hostdata->outgoing_msg[3] = EXTENDED_SDTR;
if (hostdata->no_sync & (1 << cmd->device->id)) {
- hostdata->outgoing_msg[4] =
- hostdata->default_sx_per / 4;
- hostdata->outgoing_msg[5] = 0;
+ calc_sync_msg(hostdata->default_sx_per, 0,
+ 0, hostdata->outgoing_msg + 4);
} else {
- hostdata->outgoing_msg[4] = OPTIMUM_SX_PER / 4;
- hostdata->outgoing_msg[5] = OPTIMUM_SX_OFF;
+ calc_sync_msg(optimum_sx_per(hostdata),
+ OPTIMUM_SX_OFF,
+ hostdata->fast,
+ hostdata->outgoing_msg + 4);
}
hostdata->outgoing_len = 6;
+#ifdef SYNC_DEBUG
+ ucp = hostdata->outgoing_msg + 1;
+ printk(" sending SDTR %02x03%02x%02x%02x ",
+ ucp[0], ucp[2], ucp[3], ucp[4]);
+#endif
} else
hostdata->outgoing_len = 1;
@@ -924,7 +963,7 @@ wd33c93_intr(struct Scsi_Host *instance)
case CSR_XFER_DONE | PHS_COMMAND:
case CSR_UNEXP | PHS_COMMAND:
case CSR_SRV_REQ | PHS_COMMAND:
- DB(DB_INTR, printk("CMND-%02x,%ld", cmd->cmnd[0], cmd->pid))
+ DB(DB_INTR, printk("CMND-%02x", cmd->cmnd[0]))
transfer_pio(regs, cmd->cmnd, cmd->cmd_len, DATA_OUT_DIR,
hostdata);
hostdata->state = S_CONNECTED;
@@ -939,6 +978,7 @@ wd33c93_intr(struct Scsi_Host *instance)
DB(DB_INTR, printk("%02x", cmd->SCp.Status))
if (hostdata->level2 >= L2_BASIC) {
sr = read_wd33c93(regs, WD_SCSI_STATUS); /* clear interrupt */
+ udelay(7);
hostdata->state = S_RUNNING_LEVEL2;
write_wd33c93(regs, WD_COMMAND_PHASE, 0x50);
write_wd33c93_cmd(regs, WD_CMD_SEL_ATN_XFER);
@@ -955,6 +995,7 @@ wd33c93_intr(struct Scsi_Host *instance)
msg = read_1_byte(regs);
sr = read_wd33c93(regs, WD_SCSI_STATUS); /* clear interrupt */
+ udelay(7);
hostdata->incoming_msg[hostdata->incoming_ptr] = msg;
if (hostdata->incoming_msg[0] == EXTENDED_MESSAGE)
@@ -966,7 +1007,7 @@ wd33c93_intr(struct Scsi_Host *instance)
switch (msg) {
case COMMAND_COMPLETE:
- DB(DB_INTR, printk("CCMP-%ld", cmd->pid))
+ DB(DB_INTR, printk("CCMP"))
write_wd33c93_cmd(regs, WD_CMD_NEGATE_ACK);
hostdata->state = S_PRE_CMP_DISC;
break;
@@ -1001,8 +1042,13 @@ wd33c93_intr(struct Scsi_Host *instance)
#ifdef SYNC_DEBUG
printk("-REJ-");
#endif
- if (hostdata->sync_stat[cmd->device->id] == SS_WAITING)
+ if (hostdata->sync_stat[cmd->device->id] == SS_WAITING) {
hostdata->sync_stat[cmd->device->id] = SS_SET;
+ /* we want default_sx_per, not DEFAULT_SX_PER */
+ hostdata->sync_xfer[cmd->device->id] =
+ calc_sync_xfer(hostdata->default_sx_per
+ / 4, 0, 0, hostdata->sx_table);
+ }
write_wd33c93_cmd(regs, WD_CMD_NEGATE_ACK);
hostdata->state = S_CONNECTED;
break;
@@ -1022,7 +1068,10 @@ wd33c93_intr(struct Scsi_Host *instance)
switch (ucp[2]) { /* what's the EXTENDED code? */
case EXTENDED_SDTR:
- id = calc_sync_xfer(ucp[3], ucp[4]);
+ /* default to default async period */
+ id = calc_sync_xfer(hostdata->
+ default_sx_per / 4, 0,
+ 0, hostdata->sx_table);
if (hostdata->sync_stat[cmd->device->id] !=
SS_WAITING) {
@@ -1041,20 +1090,22 @@ wd33c93_intr(struct Scsi_Host *instance)
hostdata->outgoing_msg[1] = 3;
hostdata->outgoing_msg[2] =
EXTENDED_SDTR;
- hostdata->outgoing_msg[3] =
- hostdata->default_sx_per /
- 4;
- hostdata->outgoing_msg[4] = 0;
+ calc_sync_msg(hostdata->
+ default_sx_per, 0,
+ 0, hostdata->outgoing_msg + 3);
hostdata->outgoing_len = 5;
- hostdata->sync_xfer[cmd->device->id] =
- calc_sync_xfer(hostdata->
- default_sx_per
- / 4, 0);
} else {
- hostdata->sync_xfer[cmd->device->id] = id;
+ if (ucp[4]) /* well, sync transfer */
+ id = calc_sync_xfer(ucp[3], ucp[4],
+ hostdata->fast,
+ hostdata->sx_table);
+ else if (ucp[3]) /* very unlikely... */
+ id = calc_sync_xfer(ucp[3], ucp[4],
+ 0, hostdata->sx_table);
}
+ hostdata->sync_xfer[cmd->device->id] = id;
#ifdef SYNC_DEBUG
- printk("sync_xfer=%02x",
+ printk(" sync_xfer=%02x\n",
hostdata->sync_xfer[cmd->device->id]);
#endif
hostdata->sync_stat[cmd->device->id] =
@@ -1123,7 +1174,7 @@ wd33c93_intr(struct Scsi_Host *instance)
write_wd33c93(regs, WD_SOURCE_ID, SRCID_ER);
if (phs == 0x60) {
- DB(DB_INTR, printk("SX-DONE-%ld", cmd->pid))
+ DB(DB_INTR, printk("SX-DONE"))
cmd->SCp.Message = COMMAND_COMPLETE;
lun = read_wd33c93(regs, WD_TARGET_LUN);
DB(DB_INTR, printk(":%d.%d", cmd->SCp.Status, lun))
@@ -1149,8 +1200,8 @@ wd33c93_intr(struct Scsi_Host *instance)
wd33c93_execute(instance);
} else {
printk
- ("%02x:%02x:%02x-%ld: Unknown SEL_XFER_DONE phase!!---",
- asr, sr, phs, cmd->pid);
+ ("%02x:%02x:%02x: Unknown SEL_XFER_DONE phase!!---",
+ asr, sr, phs);
spin_unlock_irqrestore(&hostdata->lock, flags);
}
break;
@@ -1215,7 +1266,7 @@ wd33c93_intr(struct Scsi_Host *instance)
spin_unlock_irqrestore(&hostdata->lock, flags);
return;
}
- DB(DB_INTR, printk("UNEXP_DISC-%ld", cmd->pid))
+ DB(DB_INTR, printk("UNEXP_DISC"))
hostdata->connected = NULL;
hostdata->busy[cmd->device->id] &= ~(1 << cmd->device->lun);
hostdata->state = S_UNCONNECTED;
@@ -1241,7 +1292,7 @@ wd33c93_intr(struct Scsi_Host *instance)
*/
write_wd33c93(regs, WD_SOURCE_ID, SRCID_ER);
- DB(DB_INTR, printk("DISC-%ld", cmd->pid))
+ DB(DB_INTR, printk("DISC"))
if (cmd == NULL) {
printk(" - Already disconnected! ");
hostdata->state = S_UNCONNECTED;
@@ -1358,6 +1409,7 @@ wd33c93_intr(struct Scsi_Host *instance)
} else {
/* Verify this is a change to MSG_IN and read the message */
sr = read_wd33c93(regs, WD_SCSI_STATUS);
+ udelay(7);
if (sr == (CSR_ABORT | PHS_MESS_IN) ||
sr == (CSR_UNEXP | PHS_MESS_IN) ||
sr == (CSR_SRV_REQ | PHS_MESS_IN)) {
@@ -1374,6 +1426,7 @@ wd33c93_intr(struct Scsi_Host *instance)
asr);
}
sr = read_wd33c93(regs, WD_SCSI_STATUS);
+ udelay(7);
if (sr != CSR_MSGIN)
printk
("wd33c93: Not paused with ACK on RESEL (%02x)\n",
@@ -1438,7 +1491,6 @@ wd33c93_intr(struct Scsi_Host *instance)
} else
hostdata->state = S_CONNECTED;
- DB(DB_INTR, printk("-%ld", cmd->pid))
spin_unlock_irqrestore(&hostdata->lock, flags);
break;
@@ -1484,7 +1536,7 @@ reset_wd33c93(struct Scsi_Host *instance)
write_wd33c93(regs, WD_CONTROL, CTRL_IDI | CTRL_EDI | CTRL_POLLED);
write_wd33c93(regs, WD_SYNCHRONOUS_TRANSFER,
calc_sync_xfer(hostdata->default_sx_per / 4,
- DEFAULT_SX_OFF));
+ DEFAULT_SX_OFF, 0, hostdata->sx_table));
write_wd33c93(regs, WD_COMMAND, WD_CMD_RESET);
@@ -1510,6 +1562,9 @@ reset_wd33c93(struct Scsi_Host *instance)
} else
hostdata->chip = C_UNKNOWN_CHIP;
+ if (hostdata->chip != C_WD33C93B) /* Fast SCSI unavailable */
+ hostdata->fast = 0;
+
write_wd33c93(regs, WD_TIMEOUT_PERIOD, TIMEOUT_PERIOD_VALUE);
write_wd33c93(regs, WD_CONTROL, CTRL_IDI | CTRL_EDI | CTRL_POLLED);
}
@@ -1531,7 +1586,8 @@ wd33c93_host_reset(struct scsi_cmnd * SCpnt)
for (i = 0; i < 8; i++) {
hostdata->busy[i] = 0;
hostdata->sync_xfer[i] =
- calc_sync_xfer(DEFAULT_SX_PER / 4, DEFAULT_SX_OFF);
+ calc_sync_xfer(DEFAULT_SX_PER / 4, DEFAULT_SX_OFF,
+ 0, hostdata->sx_table);
hostdata->sync_stat[i] = SS_UNSET; /* using default sync values */
}
hostdata->input_Q = NULL;
@@ -1580,8 +1636,8 @@ wd33c93_abort(struct scsi_cmnd * cmd)
cmd->host_scribble = NULL;
cmd->result = DID_ABORT << 16;
printk
- ("scsi%d: Abort - removing command %ld from input_Q. ",
- instance->host_no, cmd->pid);
+ ("scsi%d: Abort - removing command from input_Q. ",
+ instance->host_no);
enable_irq(cmd->device->host->irq);
cmd->scsi_done(cmd);
return SUCCESS;
@@ -1605,8 +1661,8 @@ wd33c93_abort(struct scsi_cmnd * cmd)
uchar sr, asr;
unsigned long timeout;
- printk("scsi%d: Aborting connected command %ld - ",
- instance->host_no, cmd->pid);
+ printk("scsi%d: Aborting connected command - ",
+ instance->host_no);
printk("stopping DMA - ");
if (hostdata->dma == D_DMA_RUNNING) {
@@ -1672,8 +1728,8 @@ wd33c93_abort(struct scsi_cmnd * cmd)
while (tmp) {
if (tmp == cmd) {
printk
- ("scsi%d: Abort - command %ld found on disconnected_Q - ",
- instance->host_no, cmd->pid);
+ ("scsi%d: Abort - command found on disconnected_Q - ",
+ instance->host_no);
printk("Abort SNOOZE. ");
enable_irq(cmd->device->host->irq);
return FAILED;
@@ -1701,13 +1757,13 @@ wd33c93_abort(struct scsi_cmnd * cmd)
}
#define MAX_WD33C93_HOSTS 4
-#define MAX_SETUP_ARGS ((int)(sizeof(setup_args) / sizeof(char *)))
+#define MAX_SETUP_ARGS ARRAY_SIZE(setup_args)
#define SETUP_BUFFER_SIZE 200
static char setup_buffer[SETUP_BUFFER_SIZE];
static char setup_used[MAX_SETUP_ARGS];
static int done_setup = 0;
-int
+static int
wd33c93_setup(char *str)
{
int i;
@@ -1780,6 +1836,98 @@ check_setup_args(char *key, int *flags, int *val, char *buf)
return ++x;
}
+/*
+ * Calculate internal data-transfer-clock cycle from input-clock
+ * frequency (/MHz) and fill 'sx_table'.
+ *
+ * The original driver used to rely on a fixed sx_table, containing periods
+ * for (only) the lower limits of the respective input-clock-frequency ranges
+ * (8-10/12-15/16-20 MHz). Although it seems, that no problems occurred with
+ * this setting so far, it might be desirable to adjust the transfer periods
+ * closer to the really attached, possibly 25% higher, input-clock, since
+ * - the wd33c93 may really use a significant shorter period, than it has
+ * negotiated (eg. thrashing the target, which expects 4/8MHz, with 5/10MHz
+ * instead).
+ * - the wd33c93 may ask the target for a lower transfer rate, than the target
+ * is capable of (eg. negotiating for an assumed minimum of 252ns instead of
+ * possible 200ns, which indeed shows up in tests as an approx. 10% lower
+ * transfer rate).
+ */
+static inline unsigned int
+round_4(unsigned int x)
+{
+ switch (x & 3) {
+ case 1: --x;
+ break;
+ case 2: ++x;
+ case 3: ++x;
+ }
+ return x;
+}
+
+static void
+calc_sx_table(unsigned int mhz, struct sx_period sx_table[9])
+{
+ unsigned int d, i;
+ if (mhz < 11)
+ d = 2; /* divisor for 8-10 MHz input-clock */
+ else if (mhz < 16)
+ d = 3; /* divisor for 12-15 MHz input-clock */
+ else
+ d = 4; /* divisor for 16-20 MHz input-clock */
+
+ d = (100000 * d) / 2 / mhz; /* 100 x DTCC / nanosec */
+
+ sx_table[0].period_ns = 1;
+ sx_table[0].reg_value = 0x20;
+ for (i = 1; i < 8; i++) {
+ sx_table[i].period_ns = round_4((i+1)*d / 100);
+ sx_table[i].reg_value = (i+1)*0x10;
+ }
+ sx_table[7].reg_value = 0;
+ sx_table[8].period_ns = 0;
+ sx_table[8].reg_value = 0;
+}
+
+/*
+ * check and, maybe, map an init- or "clock:"- argument.
+ */
+static uchar
+set_clk_freq(int freq, int *mhz)
+{
+ int x = freq;
+ if (WD33C93_FS_8_10 == freq)
+ freq = 8;
+ else if (WD33C93_FS_12_15 == freq)
+ freq = 12;
+ else if (WD33C93_FS_16_20 == freq)
+ freq = 16;
+ else if (freq > 7 && freq < 11)
+ x = WD33C93_FS_8_10;
+ else if (freq > 11 && freq < 16)
+ x = WD33C93_FS_12_15;
+ else if (freq > 15 && freq < 21)
+ x = WD33C93_FS_16_20;
+ else {
+ /* Hmm, wouldn't it be safer to assume highest freq here? */
+ x = WD33C93_FS_8_10;
+ freq = 8;
+ }
+ *mhz = freq;
+ return x;
+}
+
+/*
+ * to be used with the resync: fast: ... options
+ */
+static inline void set_resync ( struct WD33C93_hostdata *hd, int mask )
+{
+ int i;
+ for (i = 0; i < 8; i++)
+ if (mask & (1 << i))
+ hd->sync_stat[i] = SS_UNSET;
+}
+
void
wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
dma_setup_t setup, dma_stop_t stop, int clock_freq)
@@ -1796,7 +1944,8 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
hostdata = (struct WD33C93_hostdata *) instance->hostdata;
hostdata->regs = regs;
- hostdata->clock_freq = clock_freq;
+ hostdata->clock_freq = set_clk_freq(clock_freq, &i);
+ calc_sx_table(i, hostdata->sx_table);
hostdata->dma_setup = setup;
hostdata->dma_stop = stop;
hostdata->dma_bounce_buffer = NULL;
@@ -1804,7 +1953,8 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
for (i = 0; i < 8; i++) {
hostdata->busy[i] = 0;
hostdata->sync_xfer[i] =
- calc_sync_xfer(DEFAULT_SX_PER / 4, DEFAULT_SX_OFF);
+ calc_sync_xfer(DEFAULT_SX_PER / 4, DEFAULT_SX_OFF,
+ 0, hostdata->sx_table);
hostdata->sync_stat[i] = SS_UNSET; /* using default sync values */
#ifdef PROC_STATISTICS
hostdata->cmd_cnt[i] = 0;
@@ -1824,7 +1974,6 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
hostdata->incoming_ptr = 0;
hostdata->outgoing_len = 0;
hostdata->default_sx_per = DEFAULT_SX_PER;
- hostdata->no_sync = 0xff; /* sync defaults to off */
hostdata->no_dma = 0; /* default is DMA enabled */
#ifdef PROC_INTERFACE
@@ -1837,6 +1986,11 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
#endif
#endif
+ if (check_setup_args("clock", &flags, &val, buf)) {
+ hostdata->clock_freq = set_clk_freq(val, &val);
+ calc_sx_table(val, hostdata->sx_table);
+ }
+
if (check_setup_args("nosync", &flags, &val, buf))
hostdata->no_sync = val;
@@ -1845,7 +1999,8 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
if (check_setup_args("period", &flags, &val, buf))
hostdata->default_sx_per =
- sx_table[round_period((unsigned int) val)].period_ns;
+ hostdata->sx_table[round_period((unsigned int) val,
+ hostdata->sx_table)].period_ns;
if (check_setup_args("disconnect", &flags, &val, buf)) {
if ((val >= DIS_NEVER) && (val <= DIS_ALWAYS))
@@ -1860,17 +2015,12 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
if (check_setup_args("debug", &flags, &val, buf))
hostdata->args = val & DB_MASK;
- if (check_setup_args("clock", &flags, &val, buf)) {
- if (val > 7 && val < 11)
- val = WD33C93_FS_8_10;
- else if (val > 11 && val < 16)
- val = WD33C93_FS_12_15;
- else if (val > 15 && val < 21)
- val = WD33C93_FS_16_20;
- else
- val = WD33C93_FS_8_10;
- hostdata->clock_freq = val;
- }
+ if (check_setup_args("burst", &flags, &val, buf))
+ hostdata->dma_mode = val ? CTRL_BURST:CTRL_DMA;
+
+ if (WD33C93_FS_16_20 == hostdata->clock_freq /* divisor 4 */
+ && check_setup_args("fast", &flags, &val, buf))
+ hostdata->fast = !!val;
if ((i = check_setup_args("next", &flags, &val, buf))) {
while (i)
@@ -1901,176 +2051,156 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
for (i = 0; i < MAX_SETUP_ARGS; i++)
printk("%s,", setup_args[i]);
printk("\n");
- printk(" Version %s - %s, Compiled %s at %s\n",
- WD33C93_VERSION, WD33C93_DATE, __DATE__, __TIME__);
+ printk(" Version %s - %s\n", WD33C93_VERSION, WD33C93_DATE);
}
-int
-wd33c93_proc_info(struct Scsi_Host *instance, char *buf, char **start, off_t off, int len, int in)
+int wd33c93_write_info(struct Scsi_Host *instance, char *buf, int len)
{
-
#ifdef PROC_INTERFACE
-
char *bp;
- char tbuf[128];
struct WD33C93_hostdata *hd;
- struct scsi_cmnd *cmd;
- int x, i;
- static int stop = 0;
+ int x;
hd = (struct WD33C93_hostdata *) instance->hostdata;
-/* If 'in' is TRUE we need to _read_ the proc file. We accept the following
- * keywords (same format as command-line, but only ONE per read):
+/* We accept the following
+ * keywords (same format as command-line, but arguments are not optional):
* debug
* disconnect
* period
* resync
* proc
* nodma
+ * level2
+ * burst
+ * fast
+ * nosync
*/
- if (in) {
- buf[len] = '\0';
- bp = buf;
- if (!strncmp(bp, "debug:", 6)) {
- bp += 6;
- hd->args = simple_strtoul(bp, NULL, 0) & DB_MASK;
- } else if (!strncmp(bp, "disconnect:", 11)) {
- bp += 11;
- x = simple_strtoul(bp, NULL, 0);
- if (x < DIS_NEVER || x > DIS_ALWAYS)
- x = DIS_ADAPTIVE;
- hd->disconnect = x;
- } else if (!strncmp(bp, "period:", 7)) {
- bp += 7;
- x = simple_strtoul(bp, NULL, 0);
- hd->default_sx_per =
- sx_table[round_period((unsigned int) x)].period_ns;
- } else if (!strncmp(bp, "resync:", 7)) {
- bp += 7;
- x = simple_strtoul(bp, NULL, 0);
- for (i = 0; i < 7; i++)
- if (x & (1 << i))
- hd->sync_stat[i] = SS_UNSET;
- } else if (!strncmp(bp, "proc:", 5)) {
- bp += 5;
- hd->proc = simple_strtoul(bp, NULL, 0);
- } else if (!strncmp(bp, "nodma:", 6)) {
- bp += 6;
- hd->no_dma = simple_strtoul(bp, NULL, 0);
- } else if (!strncmp(bp, "level2:", 7)) {
- bp += 7;
- hd->level2 = simple_strtoul(bp, NULL, 0);
+ buf[len] = '\0';
+ for (bp = buf; *bp; ) {
+ while (',' == *bp || ' ' == *bp)
+ ++bp;
+ if (!strncmp(bp, "debug:", 6)) {
+ hd->args = simple_strtoul(bp+6, &bp, 0) & DB_MASK;
+ } else if (!strncmp(bp, "disconnect:", 11)) {
+ x = simple_strtoul(bp+11, &bp, 0);
+ if (x < DIS_NEVER || x > DIS_ALWAYS)
+ x = DIS_ADAPTIVE;
+ hd->disconnect = x;
+ } else if (!strncmp(bp, "period:", 7)) {
+ x = simple_strtoul(bp+7, &bp, 0);
+ hd->default_sx_per =
+ hd->sx_table[round_period((unsigned int) x,
+ hd->sx_table)].period_ns;
+ } else if (!strncmp(bp, "resync:", 7)) {
+ set_resync(hd, (int)simple_strtoul(bp+7, &bp, 0));
+ } else if (!strncmp(bp, "proc:", 5)) {
+ hd->proc = simple_strtoul(bp+5, &bp, 0);
+ } else if (!strncmp(bp, "nodma:", 6)) {
+ hd->no_dma = simple_strtoul(bp+6, &bp, 0);
+ } else if (!strncmp(bp, "level2:", 7)) {
+ hd->level2 = simple_strtoul(bp+7, &bp, 0);
+ } else if (!strncmp(bp, "burst:", 6)) {
+ hd->dma_mode =
+ simple_strtol(bp+6, &bp, 0) ? CTRL_BURST:CTRL_DMA;
+ } else if (!strncmp(bp, "fast:", 5)) {
+ x = !!simple_strtol(bp+5, &bp, 0);
+ if (x != hd->fast)
+ set_resync(hd, 0xff);
+ hd->fast = x;
+ } else if (!strncmp(bp, "nosync:", 7)) {
+ x = simple_strtoul(bp+7, &bp, 0);
+ set_resync(hd, x ^ hd->no_sync);
+ hd->no_sync = x;
+ } else {
+ break; /* unknown keyword,syntax-error,... */
}
- return len;
}
+ return len;
+#else
+ return 0;
+#endif
+}
+
+int
+wd33c93_show_info(struct seq_file *m, struct Scsi_Host *instance)
+{
+#ifdef PROC_INTERFACE
+ struct WD33C93_hostdata *hd;
+ struct scsi_cmnd *cmd;
+ int x;
+
+ hd = (struct WD33C93_hostdata *) instance->hostdata;
spin_lock_irq(&hd->lock);
- bp = buf;
- *bp = '\0';
- if (hd->proc & PR_VERSION) {
- sprintf(tbuf, "\nVersion %s - %s. Compiled %s %s",
- WD33C93_VERSION, WD33C93_DATE, __DATE__, __TIME__);
- strcat(bp, tbuf);
- }
+ if (hd->proc & PR_VERSION)
+ seq_printf(m, "\nVersion %s - %s.",
+ WD33C93_VERSION, WD33C93_DATE);
+
if (hd->proc & PR_INFO) {
- sprintf(tbuf, "\nclock_freq=%02x no_sync=%02x no_dma=%d",
- hd->clock_freq, hd->no_sync, hd->no_dma);
- strcat(bp, tbuf);
- strcat(bp, "\nsync_xfer[] = ");
- for (x = 0; x < 7; x++) {
- sprintf(tbuf, "\t%02x", hd->sync_xfer[x]);
- strcat(bp, tbuf);
- }
- strcat(bp, "\nsync_stat[] = ");
- for (x = 0; x < 7; x++) {
- sprintf(tbuf, "\t%02x", hd->sync_stat[x]);
- strcat(bp, tbuf);
- }
+ seq_printf(m, "\nclock_freq=%02x no_sync=%02x no_dma=%d"
+ " dma_mode=%02x fast=%d",
+ hd->clock_freq, hd->no_sync, hd->no_dma, hd->dma_mode, hd->fast);
+ seq_printf(m, "\nsync_xfer[] = ");
+ for (x = 0; x < 7; x++)
+ seq_printf(m, "\t%02x", hd->sync_xfer[x]);
+ seq_printf(m, "\nsync_stat[] = ");
+ for (x = 0; x < 7; x++)
+ seq_printf(m, "\t%02x", hd->sync_stat[x]);
}
#ifdef PROC_STATISTICS
if (hd->proc & PR_STATISTICS) {
- strcat(bp, "\ncommands issued: ");
- for (x = 0; x < 7; x++) {
- sprintf(tbuf, "\t%ld", hd->cmd_cnt[x]);
- strcat(bp, tbuf);
- }
- strcat(bp, "\ndisconnects allowed:");
- for (x = 0; x < 7; x++) {
- sprintf(tbuf, "\t%ld", hd->disc_allowed_cnt[x]);
- strcat(bp, tbuf);
- }
- strcat(bp, "\ndisconnects done: ");
- for (x = 0; x < 7; x++) {
- sprintf(tbuf, "\t%ld", hd->disc_done_cnt[x]);
- strcat(bp, tbuf);
- }
- sprintf(tbuf,
+ seq_printf(m, "\ncommands issued: ");
+ for (x = 0; x < 7; x++)
+ seq_printf(m, "\t%ld", hd->cmd_cnt[x]);
+ seq_printf(m, "\ndisconnects allowed:");
+ for (x = 0; x < 7; x++)
+ seq_printf(m, "\t%ld", hd->disc_allowed_cnt[x]);
+ seq_printf(m, "\ndisconnects done: ");
+ for (x = 0; x < 7; x++)
+ seq_printf(m, "\t%ld", hd->disc_done_cnt[x]);
+ seq_printf(m,
"\ninterrupts: %ld, DATA_PHASE ints: %ld DMA, %ld PIO",
hd->int_cnt, hd->dma_cnt, hd->pio_cnt);
- strcat(bp, tbuf);
}
#endif
if (hd->proc & PR_CONNECTED) {
- strcat(bp, "\nconnected: ");
+ seq_printf(m, "\nconnected: ");
if (hd->connected) {
cmd = (struct scsi_cmnd *) hd->connected;
- sprintf(tbuf, " %ld-%d:%d(%02x)",
- cmd->pid, cmd->device->id, cmd->device->lun, cmd->cmnd[0]);
- strcat(bp, tbuf);
+ seq_printf(m, " %d:%d(%02x)",
+ cmd->device->id, cmd->device->lun, cmd->cmnd[0]);
}
}
if (hd->proc & PR_INPUTQ) {
- strcat(bp, "\ninput_Q: ");
+ seq_printf(m, "\ninput_Q: ");
cmd = (struct scsi_cmnd *) hd->input_Q;
while (cmd) {
- sprintf(tbuf, " %ld-%d:%d(%02x)",
- cmd->pid, cmd->device->id, cmd->device->lun, cmd->cmnd[0]);
- strcat(bp, tbuf);
+ seq_printf(m, " %d:%d(%02x)",
+ cmd->device->id, cmd->device->lun, cmd->cmnd[0]);
cmd = (struct scsi_cmnd *) cmd->host_scribble;
}
}
if (hd->proc & PR_DISCQ) {
- strcat(bp, "\ndisconnected_Q:");
+ seq_printf(m, "\ndisconnected_Q:");
cmd = (struct scsi_cmnd *) hd->disconnected_Q;
while (cmd) {
- sprintf(tbuf, " %ld-%d:%d(%02x)",
- cmd->pid, cmd->device->id, cmd->device->lun, cmd->cmnd[0]);
- strcat(bp, tbuf);
+ seq_printf(m, " %d:%d(%02x)",
+ cmd->device->id, cmd->device->lun, cmd->cmnd[0]);
cmd = (struct scsi_cmnd *) cmd->host_scribble;
}
}
- strcat(bp, "\n");
+ seq_printf(m, "\n");
spin_unlock_irq(&hd->lock);
- *start = buf;
- if (stop) {
- stop = 0;
- return 0;
- }
- if (off > 0x40000) /* ALWAYS stop after 256k bytes have been read */
- stop = 1;
- if (hd->proc & PR_STOP) /* stop every other time */
- stop = 1;
- return strlen(bp);
-
-#else /* PROC_INTERFACE */
-
- return 0;
-
#endif /* PROC_INTERFACE */
-
-}
-
-void
-wd33c93_release(void)
-{
+ return 0;
}
EXPORT_SYMBOL(wd33c93_host_reset);
EXPORT_SYMBOL(wd33c93_init);
-EXPORT_SYMBOL(wd33c93_release);
EXPORT_SYMBOL(wd33c93_abort);
EXPORT_SYMBOL(wd33c93_queuecommand);
EXPORT_SYMBOL(wd33c93_intr);
-EXPORT_SYMBOL(wd33c93_proc_info);
+EXPORT_SYMBOL(wd33c93_show_info);
+EXPORT_SYMBOL(wd33c93_write_info);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 21:59:26 +0000