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Diffstat (limited to 'drivers/scsi/imm.c')
-rw-r--r--drivers/scsi/imm.c103
1 files changed, 35 insertions, 68 deletions
diff --git a/drivers/scsi/imm.c b/drivers/scsi/imm.c
index fc0f30ae0f7..89a8266560d 100644
--- a/drivers/scsi/imm.c
+++ b/drivers/scsi/imm.c
@@ -3,15 +3,11 @@
*
* (The IMM is the embedded controller in the ZIP Plus drive.)
*
- * Current Maintainer: David Campbell (Perth, Western Australia)
- * campbell@torque.net
- *
- * My unoffical company acronym list is 21 pages long:
+ * My unofficial company acronym list is 21 pages long:
* FLA: Four letter acronym with built in facility for
* future expansion to five letters.
*/
-#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -19,6 +15,7 @@
#include <linux/parport.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
+#include <linux/slab.h>
#include <asm/io.h>
#include <scsi/scsi.h>
@@ -40,7 +37,7 @@ typedef struct {
int base_hi; /* Hi Base address for ECP-ISA chipset */
int mode; /* Transfer mode */
struct scsi_cmnd *cur_cmd; /* Current queued command */
- struct work_struct imm_tq; /* Polling interrupt stuff */
+ struct delayed_work imm_tq; /* Polling interrupt stuff */
unsigned long jstart; /* Jiffies at start */
unsigned failed:1; /* Failure flag */
unsigned dp:1; /* Data phase present */
@@ -124,50 +121,31 @@ static inline void imm_pb_release(imm_struct *dev)
* testing...
* Also gives a method to use a script to obtain optimum timings (TODO)
*/
-static inline int imm_proc_write(imm_struct *dev, char *buffer, int length)
+static int imm_write_info(struct Scsi_Host *host, char *buffer, int length)
{
- unsigned long x;
+ imm_struct *dev = imm_dev(host);
if ((length > 5) && (strncmp(buffer, "mode=", 5) == 0)) {
- x = simple_strtoul(buffer + 5, NULL, 0);
- dev->mode = x;
+ dev->mode = simple_strtoul(buffer + 5, NULL, 0);
return length;
}
printk("imm /proc: invalid variable\n");
- return (-EINVAL);
+ return -EINVAL;
}
-static int imm_proc_info(struct Scsi_Host *host, char *buffer, char **start,
- off_t offset, int length, int inout)
+static int imm_show_info(struct seq_file *m, struct Scsi_Host *host)
{
imm_struct *dev = imm_dev(host);
- int len = 0;
-
- if (inout)
- return imm_proc_write(dev, buffer, length);
-
- len += sprintf(buffer + len, "Version : %s\n", IMM_VERSION);
- len +=
- sprintf(buffer + len, "Parport : %s\n",
- dev->dev->port->name);
- len +=
- sprintf(buffer + len, "Mode : %s\n",
- IMM_MODE_STRING[dev->mode]);
- /* Request for beyond end of buffer */
- if (offset > len)
- return 0;
-
- *start = buffer + offset;
- len -= offset;
- if (len > length)
- len = length;
- return len;
+ seq_printf(m, "Version : %s\n", IMM_VERSION);
+ seq_printf(m, "Parport : %s\n", dev->dev->port->name);
+ seq_printf(m, "Mode : %s\n", IMM_MODE_STRING[dev->mode]);
+ return 0;
}
#if IMM_DEBUG > 0
#define imm_fail(x,y) printk("imm: imm_fail(%i) from %s at line %d\n",\
- y, __FUNCTION__, __LINE__); imm_fail_func(x,y);
+ y, __func__, __LINE__); imm_fail_func(x,y);
static inline void
imm_fail_func(imm_struct *dev, int error_code)
#else
@@ -709,9 +687,7 @@ static int imm_completion(struct scsi_cmnd *cmd)
cmd->SCp.buffer++;
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);
/*
* Make sure that we transfer even number of bytes
@@ -737,19 +713,14 @@ static int imm_completion(struct scsi_cmnd *cmd)
* the scheduler's task queue to generate a stream of call-backs and
* complete the request when the drive is ready.
*/
-static void imm_interrupt(void *data)
+static void imm_interrupt(struct work_struct *work)
{
- imm_struct *dev = (imm_struct *) data;
+ imm_struct *dev = container_of(work, imm_struct, imm_tq.work);
struct scsi_cmnd *cmd = dev->cur_cmd;
struct Scsi_Host *host = cmd->device->host;
unsigned long flags;
- if (!cmd) {
- printk("IMM: bug in imm_interrupt\n");
- return;
- }
if (imm_engine(dev, cmd)) {
- INIT_WORK(&dev->imm_tq, imm_interrupt, (void *) dev);
schedule_delayed_work(&dev->imm_tq, 1);
return;
}
@@ -848,21 +819,16 @@ static int imm_engine(imm_struct *dev, struct scsi_cmnd *cmd)
/* Phase 4 - Setup scatter/gather buffers */
case 4:
- if (cmd->use_sg) {
- /* if many buffers are available, start filling the first */
- cmd->SCp.buffer =
- (struct scatterlist *) cmd->request_buffer;
+ if (scsi_bufflen(cmd)) {
+ cmd->SCp.buffer = scsi_sglist(cmd);
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);
} else {
- /* else fill the only available buffer */
cmd->SCp.buffer = NULL;
- cmd->SCp.this_residual = cmd->request_bufflen;
- cmd->SCp.ptr = cmd->request_buffer;
+ cmd->SCp.this_residual = 0;
+ cmd->SCp.ptr = NULL;
}
- cmd->SCp.buffers_residual = cmd->use_sg - 1;
+ cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
cmd->SCp.phase++;
if (cmd->SCp.this_residual & 0x01)
cmd->SCp.this_residual++;
@@ -941,7 +907,7 @@ static int imm_engine(imm_struct *dev, struct scsi_cmnd *cmd)
return 0;
}
-static int imm_queuecommand(struct scsi_cmnd *cmd,
+static int imm_queuecommand_lck(struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *))
{
imm_struct *dev = imm_dev(cmd->device->host);
@@ -957,14 +923,15 @@ static int imm_queuecommand(struct scsi_cmnd *cmd,
cmd->result = DID_ERROR << 16; /* default return code */
cmd->SCp.phase = 0; /* bus free */
- INIT_WORK(&dev->imm_tq, imm_interrupt, dev);
- schedule_work(&dev->imm_tq);
+ schedule_delayed_work(&dev->imm_tq, 0);
imm_pb_claim(dev);
return 0;
}
+static DEF_SCSI_QCMD(imm_queuecommand)
+
/*
* Apparently the disk->capacity attribute is off by 1 sector
* for all disk drives. We add the one here, but it should really
@@ -1119,6 +1086,10 @@ static int device_check(imm_struct *dev)
return -ENODEV;
}
+/*
+ * imm cannot deal with highmem, so this causes all IO pages for this host
+ * to reside in low memory (hence mapped)
+ */
static int imm_adjust_queue(struct scsi_device *device)
{
blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH);
@@ -1128,7 +1099,8 @@ static int imm_adjust_queue(struct scsi_device *device)
static struct scsi_host_template imm_template = {
.module = THIS_MODULE,
.proc_name = "imm",
- .proc_info = imm_proc_info,
+ .show_info = imm_show_info,
+ .write_info = imm_write_info,
.name = "Iomega VPI2 (imm) interface",
.queuecommand = imm_queuecommand,
.eh_abort_handler = imm_abort,
@@ -1141,10 +1113,6 @@ static struct scsi_host_template imm_template = {
.use_clustering = ENABLE_CLUSTERING,
.can_queue = 1,
.slave_alloc = imm_adjust_queue,
- .unchecked_isa_dma = 1, /* imm cannot deal with highmem, so
- * this is an easy trick to ensure
- * all io pages for this host reside
- * in low memory */
};
/***************************************************************************
@@ -1157,7 +1125,7 @@ static int __imm_attach(struct parport *pb)
{
struct Scsi_Host *host;
imm_struct *dev;
- DECLARE_WAIT_QUEUE_HEAD(waiting);
+ DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waiting);
DEFINE_WAIT(wait);
int ports;
int modes, ppb;
@@ -1165,11 +1133,10 @@ static int __imm_attach(struct parport *pb)
init_waitqueue_head(&waiting);
- dev = kmalloc(sizeof(imm_struct), GFP_KERNEL);
+ dev = kzalloc(sizeof(imm_struct), GFP_KERNEL);
if (!dev)
return -ENOMEM;
- memset(dev, 0, sizeof(imm_struct));
dev->base = -1;
dev->mode = IMM_AUTODETECT;
@@ -1229,7 +1196,7 @@ static int __imm_attach(struct parport *pb)
else
ports = 8;
- INIT_WORK(&dev->imm_tq, imm_interrupt, dev);
+ INIT_DELAYED_WORK(&dev->imm_tq, imm_interrupt);
err = -ENOMEM;
host = scsi_host_alloc(&imm_template, sizeof(imm_struct *));
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 20:32:03 +0000