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Subject[RFC: 2.6 patch] drivers/scsi/ips.c: remove kernel 2.4 code
This patch removes some kernel 2.4 code.

Signed-off-by: Adrian Bunk <bunk@stusta.de>

---
This patch has been sent on:
- 26 Mar 2007

drivers/scsi/ips.c | 145 +++++----------------------------------------
drivers/scsi/ips.h | 44 -------------
2 files changed, 20 insertions(+), 169 deletions(-)
--- linux-2.6.21-rc4-mm1/drivers/scsi/ips.h.old 2007-03-25 20:10:28.000000000 +0200
+++ linux-2.6.21-rc4-mm1/drivers/scsi/ips.h 2007-03-25 20:22:28.000000000 +0200
@@ -58,10 +58,6 @@
/*
* Some handy macros
*/
- #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) || defined CONFIG_HIGHIO
- #define IPS_HIGHIO
- #endif
-
#define IPS_HA(x) ((ips_ha_t *) x->hostdata)
#define IPS_COMMAND_ID(ha, scb) (int) (scb - ha->scbs)
#define IPS_IS_TROMBONE(ha) (((ha->device_id == IPS_DEVICEID_COPPERHEAD) && \
@@ -84,38 +80,8 @@
#define IPS_SGLIST_SIZE(ha) (IPS_USE_ENH_SGLIST(ha) ? \
sizeof(IPS_ENH_SG_LIST) : sizeof(IPS_STD_SG_LIST))

- #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,4)
- #define pci_set_dma_mask(dev,mask) ( mask > 0xffffffff ? 1:0 )
- #define scsi_set_pci_device(sh,dev) (0)
- #endif
-
- #ifndef IRQ_NONE
- typedef void irqreturn_t;
- #define IRQ_NONE
- #define IRQ_HANDLED
- #define IRQ_RETVAL(x)
- #endif
-
- #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- #define IPS_REGISTER_HOSTS(SHT) scsi_register_module(MODULE_SCSI_HA,SHT)
- #define IPS_UNREGISTER_HOSTS(SHT) scsi_unregister_module(MODULE_SCSI_HA,SHT)
- #define IPS_ADD_HOST(shost,device)
- #define IPS_REMOVE_HOST(shost)
- #define IPS_SCSI_SET_DEVICE(sh,ha) scsi_set_pci_device(sh, (ha)->pcidev)
- #define IPS_PRINTK(level, pcidev, format, arg...) \
- printk(level "%s %s:" format , "ips" , \
- (pcidev)->slot_name , ## arg)
- #define scsi_host_alloc(sh,size) scsi_register(sh,size)
- #define scsi_host_put(sh) scsi_unregister(sh)
- #else
- #define IPS_REGISTER_HOSTS(SHT) (!ips_detect(SHT))
- #define IPS_UNREGISTER_HOSTS(SHT)
- #define IPS_ADD_HOST(shost,device) do { scsi_add_host(shost,device); scsi_scan_host(shost); } while (0)
- #define IPS_REMOVE_HOST(shost) scsi_remove_host(shost)
- #define IPS_SCSI_SET_DEVICE(sh,ha) do { } while (0)
- #define IPS_PRINTK(level, pcidev, format, arg...) \
+ #define IPS_PRINTK(level, pcidev, format, arg...) \
dev_printk(level , &((pcidev)->dev) , format , ## arg)
- #endif

#define MDELAY(n) \
do { \
@@ -134,7 +100,7 @@
#define pci_dma_hi32(a) ((a >> 16) >> 16)
#define pci_dma_lo32(a) (a & 0xffffffff)

- #if (BITS_PER_LONG > 32) || (defined CONFIG_HIGHMEM64G && defined IPS_HIGHIO)
+ #if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G)
#define IPS_ENABLE_DMA64 (1)
#else
#define IPS_ENABLE_DMA64 (0)
@@ -451,16 +417,10 @@
/*
* Scsi_Host Template
*/
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- static int ips_proc24_info(char *, char **, off_t, int, int, int);
- static void ips_select_queue_depth(struct Scsi_Host *, struct scsi_device *);
- static int ips_biosparam(Disk *disk, kdev_t dev, int geom[]);
-#else
static int ips_proc_info(struct Scsi_Host *, char *, char **, off_t, int, int);
static int ips_biosparam(struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int geom[]);
static int ips_slave_configure(struct scsi_device *SDptr);
-#endif

/*
* Raid Command Formats
--- linux-2.6.21-rc4-mm1/drivers/scsi/ips.c.old 2007-03-25 20:11:39.000000000 +0200
+++ linux-2.6.21-rc4-mm1/drivers/scsi/ips.c 2007-03-25 20:20:35.000000000 +0200
@@ -211,19 +211,6 @@
#warning "This driver has only been tested on the x86/ia64/x86_64 platforms"
#endif

-#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,0)
-#include <linux/blk.h>
-#include "sd.h"
-#define IPS_LOCK_SAVE(lock,flags) spin_lock_irqsave(&io_request_lock,flags)
-#define IPS_UNLOCK_RESTORE(lock,flags) spin_unlock_irqrestore(&io_request_lock,flags)
-#ifndef __devexit_p
-#define __devexit_p(x) x
-#endif
-#else
-#define IPS_LOCK_SAVE(lock,flags) do{spin_lock(lock);(void)flags;}while(0)
-#define IPS_UNLOCK_RESTORE(lock,flags) do{spin_unlock(lock);(void)flags;}while(0)
-#endif
-
#define IPS_DMA_DIR(scb) ((!scb->scsi_cmd || ips_is_passthru(scb->scsi_cmd) || \
DMA_NONE == scb->scsi_cmd->sc_data_direction) ? \
PCI_DMA_BIDIRECTIONAL : \
@@ -381,24 +368,13 @@
.eh_abort_handler = ips_eh_abort,
.eh_host_reset_handler = ips_eh_reset,
.proc_name = "ips",
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
.proc_info = ips_proc_info,
.slave_configure = ips_slave_configure,
-#else
- .proc_info = ips_proc24_info,
- .select_queue_depths = ips_select_queue_depth,
-#endif
.bios_param = ips_biosparam,
.this_id = -1,
.sg_tablesize = IPS_MAX_SG,
.cmd_per_lun = 3,
.use_clustering = ENABLE_CLUSTERING,
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- .use_new_eh_code = 1,
-#endif
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) && LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- .highmem_io = 1,
-#endif
};


@@ -731,7 +707,7 @@
/* free IRQ */
free_irq(ha->irq, ha);

- IPS_REMOVE_HOST(sh);
+ scsi_remove_host(sh);
scsi_host_put(sh);

ips_released_controllers++;
@@ -813,7 +789,6 @@
ips_ha_t *ha;
ips_copp_wait_item_t *item;
int ret;
- unsigned long cpu_flags;
struct Scsi_Host *host;

METHOD_TRACE("ips_eh_abort", 1);
@@ -830,7 +805,7 @@
if (!ha->active)
return (FAILED);

- IPS_LOCK_SAVE(host->host_lock, cpu_flags);
+ spin_lock(host->host_lock);

/* See if the command is on the copp queue */
item = ha->copp_waitlist.head;
@@ -851,7 +826,7 @@
ret = (FAILED);
}

- IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags);
+ spin_unlock(host->host_lock);
return ret;
}

@@ -1176,18 +1151,10 @@
/* Set bios geometry for the controller */
/* */
/****************************************************************************/
-static int
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-ips_biosparam(Disk * disk, kdev_t dev, int geom[])
-{
- ips_ha_t *ha = (ips_ha_t *) disk->device->host->hostdata;
- unsigned long capacity = disk->capacity;
-#else
-ips_biosparam(struct scsi_device *sdev, struct block_device *bdev,
- sector_t capacity, int geom[])
+static int ips_biosparam(struct scsi_device *sdev, struct block_device *bdev,
+ sector_t capacity, int geom[])
{
ips_ha_t *ha = (ips_ha_t *) sdev->host->hostdata;
-#endif
int heads;
int sectors;
int cylinders;
@@ -1225,70 +1192,6 @@
return (0);
}

-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-
-/* ips_proc24_info is a wrapper around ips_proc_info *
- * for compatibility with the 2.4 scsi parameters */
-static int
-ips_proc24_info(char *buffer, char **start, off_t offset, int length,
- int hostno, int func)
-{
- int i;
-
- for (i = 0; i < ips_next_controller; i++) {
- if (ips_sh[i] && ips_sh[i]->host_no == hostno) {
- return ips_proc_info(ips_sh[i], buffer, start,
- offset, length, func);
- }
- }
- return -EINVAL;
-}
-
-/****************************************************************************/
-/* */
-/* Routine Name: ips_select_queue_depth */
-/* */
-/* Routine Description: */
-/* */
-/* Select queue depths for the devices on the contoller */
-/* */
-/****************************************************************************/
-static void
-ips_select_queue_depth(struct Scsi_Host *host, struct scsi_device * scsi_devs)
-{
- struct scsi_device *device;
- ips_ha_t *ha;
- int count = 0;
- int min;
-
- ha = IPS_HA(host);
- min = ha->max_cmds / 4;
-
- for (device = scsi_devs; device; device = device->next) {
- if (device->host == host) {
- if ((device->channel == 0) && (device->type == 0))
- count++;
- }
- }
-
- for (device = scsi_devs; device; device = device->next) {
- if (device->host == host) {
- if ((device->channel == 0) && (device->type == 0)) {
- device->queue_depth =
- (ha->max_cmds - 1) / count;
- if (device->queue_depth < min)
- device->queue_depth = min;
- } else {
- device->queue_depth = 2;
- }
-
- if (device->queue_depth < 2)
- device->queue_depth = 2;
- }
- }
-}
-
-#else
/****************************************************************************/
/* */
/* Routine Name: ips_slave_configure */
@@ -1316,7 +1219,6 @@
SDptr->skip_ms_page_3f = 1;
return 0;
}
-#endif

/****************************************************************************/
/* */
@@ -1331,7 +1233,6 @@
do_ipsintr(int irq, void *dev_id)
{
ips_ha_t *ha;
- unsigned long cpu_flags;
struct Scsi_Host *host;
int irqstatus;

@@ -1347,16 +1248,16 @@
return IRQ_HANDLED;
}

- IPS_LOCK_SAVE(host->host_lock, cpu_flags);
+ spin_lock(host->host_lock);

if (!ha->active) {
- IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags);
+ spin_unlock(host->host_lock);
return IRQ_HANDLED;
}

irqstatus = (*ha->func.intr) (ha);

- IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags);
+ spin_unlock(host->host_lock);

/* start the next command */
ips_next(ha, IPS_INTR_ON);
@@ -2730,7 +2631,6 @@
struct scsi_cmnd *q;
ips_copp_wait_item_t *item;
int ret;
- unsigned long cpu_flags = 0;
struct Scsi_Host *host;
METHOD_TRACE("ips_next", 1);

@@ -2742,7 +2642,7 @@
* this command won't time out
*/
if (intr == IPS_INTR_ON)
- IPS_LOCK_SAVE(host->host_lock, cpu_flags);
+ spin_lock(host->host_lock);

if ((ha->subsys->param[3] & 0x300000)
&& (ha->scb_activelist.count == 0)) {
@@ -2769,14 +2669,14 @@
item = ips_removeq_copp_head(&ha->copp_waitlist);
ha->num_ioctl++;
if (intr == IPS_INTR_ON)
- IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags);
+ spin_unlock(host->host_lock);
scb->scsi_cmd = item->scsi_cmd;
kfree(item);

ret = ips_make_passthru(ha, scb->scsi_cmd, scb, intr);

if (intr == IPS_INTR_ON)
- IPS_LOCK_SAVE(host->host_lock, cpu_flags);
+ spin_lock(host->host_lock);
switch (ret) {
case IPS_FAILURE:
if (scb->scsi_cmd) {
@@ -2846,7 +2746,7 @@
SC = ips_removeq_wait(&ha->scb_waitlist, q);

if (intr == IPS_INTR_ON)
- IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags); /* Unlock HA after command is taken off queue */
+ spin_unlock(host->host_lock); /* Unlock HA after command is taken off queue */

SC->result = DID_OK;
SC->host_scribble = NULL;
@@ -2919,7 +2819,7 @@
scb->dcdb.transfer_length = 0;
}
if (intr == IPS_INTR_ON)
- IPS_LOCK_SAVE(host->host_lock, cpu_flags);
+ spin_lock(host->host_lock);

ret = ips_send_cmd(ha, scb);

@@ -2958,7 +2858,7 @@
} /* end while */

if (intr == IPS_INTR_ON)
- IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags);
+ spin_unlock(host->host_lock);
}

/****************************************************************************/
@@ -7004,7 +6904,6 @@
kfree(oldha);
ips_sh[index] = sh;
ips_ha[index] = ha;
- IPS_SCSI_SET_DEVICE(sh, ha);

/* Store away needed values for later use */
sh->io_port = ha->io_addr;
@@ -7016,17 +6915,16 @@
sh->cmd_per_lun = sh->hostt->cmd_per_lun;
sh->unchecked_isa_dma = sh->hostt->unchecked_isa_dma;
sh->use_clustering = sh->hostt->use_clustering;
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,7)
sh->max_sectors = 128;
-#endif

sh->max_id = ha->ntargets;
sh->max_lun = ha->nlun;
sh->max_channel = ha->nbus - 1;
sh->can_queue = ha->max_cmds - 1;

- IPS_ADD_HOST(sh, NULL);
+ scsi_add_host(sh, NULL);
+ scsi_scan_host(sh);
+
return 0;
}

@@ -7069,7 +6967,7 @@
return -ENODEV;
ips_driver_template.module = THIS_MODULE;
ips_order_controllers();
- if (IPS_REGISTER_HOSTS(&ips_driver_template)) {
+ if (!ips_detect(&ips_driver_template)) {
pci_unregister_driver(&ips_pci_driver);
return -ENODEV;
}
@@ -7087,7 +6985,6 @@
static void __exit
ips_module_exit(void)
{
- IPS_UNREGISTER_HOSTS(&ips_driver_template);
pci_unregister_driver(&ips_pci_driver);
unregister_reboot_notifier(&ips_notifier);
}
@@ -7443,15 +7340,9 @@
return SUCCESS;
}

-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,9)
MODULE_LICENSE("GPL");
-#endif
-
MODULE_DESCRIPTION("IBM ServeRAID Adapter Driver " IPS_VER_STRING);
-
-#ifdef MODULE_VERSION
MODULE_VERSION(IPS_VER_STRING);
-#endif


/*
-
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