* [PATCH] Generalize 32bit emulation support in MPT fusion
@ 2003-09-23 6:39 Andi Kleen
0 siblings, 0 replies; only message in thread
From: Andi Kleen @ 2003-09-23 6:39 UTC (permalink / raw)
To: linux-scsi, Pam.Delaney
The mptctl module has had sparc64 32bit emulation support for some
time. This patch generalizes it to use the generic compat infrastructure.
This makes it work on x86-64 too.
I also removed one special case for sparc in the locking that didn't
make any sense to me.
Patch for 2.6.0test5
-Andi
diff -burpN -X ../KDIFX linux-vanilla/drivers/message/fusion/mptctl.c linux-2.6.0test5-amd64/drivers/message/fusion/mptctl.c
--- linux-vanilla/drivers/message/fusion/mptctl.c 2003-08-23 01:51:03.000000000 +0200
+++ linux-2.6.0test5-amd64/drivers/message/fusion/mptctl.c 2003-09-01 03:51:07.000000000 +0200
@@ -207,14 +207,6 @@ mptctl_syscall_down(MPT_ADAPTER *ioc, in
return -EBUSY;
}
-#if defined(__sparc__) && defined(__sparc_v9__) /*{*/
- if (!nonblock) {
- if (down_interruptible(&mptctl_syscall_sem_ioc[ioc->id]))
- rc = -ERESTARTSYS;
- } else {
- rc = -EPERM;
- }
-#else
if (nonblock) {
if (down_trylock(&mptctl_syscall_sem_ioc[ioc->id]))
rc = -EAGAIN;
@@ -222,7 +214,6 @@ mptctl_syscall_down(MPT_ADAPTER *ioc, in
if (down_interruptible(&mptctl_syscall_sem_ioc[ioc->id]))
rc = -ERESTARTSYS;
}
-#endif
dctlprintk((KERN_INFO MYNAM "::mptctl_syscall_down return %d\n", rc));
return rc;
}
@@ -2733,28 +2724,19 @@ static struct miscdevice mptctl_miscdev
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
-#if defined(__sparc__) && defined(__sparc_v9__) /*{*/
+#ifdef CONFIG_COMPAT
-/* The dynamic ioctl32 compat. registry only exists in >2.3.x sparc64 kernels */
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0) /*{*/
-extern int register_ioctl32_conversion(unsigned int cmd,
- int (*handler)(unsigned int,
- unsigned int,
- unsigned long,
- struct file *));
-int unregister_ioctl32_conversion(unsigned int cmd);
-extern asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
- unsigned long arg);
+#include <linux/ioctl32.h>
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
-/* sparc32_XXX functions are used to provide a conversion between
+/* compat_XXX functions are used to provide a conversion between
* pointers and u32's. If the arg does not contain any pointers, then
- * a specialized function (sparc32_XXX) is not needed. If the arg
+ * a specialized function (compat_XXX) is not needed. If the arg
* does contain pointer(s), then the specialized function is used
* to ensure the structure contents is properly processed by mptctl.
*/
static int
-sparc32_mptfwxfer_ioctl(unsigned int fd, unsigned int cmd,
+compat_mptfwxfer_ioctl(unsigned int fd, unsigned int cmd,
unsigned long arg, struct file *filp)
{
struct mpt_fw_xfer32 kfw32;
@@ -2764,7 +2746,7 @@ sparc32_mptfwxfer_ioctl(unsigned int fd,
int nonblock = (filp->f_flags & O_NONBLOCK);
int ret;
- dctlprintk((KERN_INFO MYNAM "::sparc32_mptfwxfer_ioctl() called\n"));
+ dctlprintk((KERN_INFO MYNAM "::compat_mptfwxfer_ioctl() called\n"));
if (copy_from_user(&kfw32, (char *)arg, sizeof(kfw32)))
return -EFAULT;
@@ -2773,7 +2755,7 @@ sparc32_mptfwxfer_ioctl(unsigned int fd,
iocnumX = kfw32.iocnum & 0xFF;
if (((iocnum = mpt_verify_adapter(iocnumX, &iocp)) < 0) ||
(iocp == NULL)) {
- dctlprintk((KERN_ERR MYNAM "::sparc32_mptfwxfer_ioctl @%d - ioc%d not found!\n",
+ dctlprintk((KERN_ERR MYNAM "::compat_mptfwxfer_ioctl @%d - ioc%d not found!\n",
__LINE__, iocnumX));
return -ENODEV;
}
@@ -2793,7 +2775,7 @@ sparc32_mptfwxfer_ioctl(unsigned int fd,
}
static int
-sparc32_mpt_command(unsigned int fd, unsigned int cmd,
+compat_mpt_command(unsigned int fd, unsigned int cmd,
unsigned long arg, struct file *filp)
{
struct mpt_ioctl_command32 karg32;
@@ -2804,7 +2786,7 @@ sparc32_mpt_command(unsigned int fd, uns
int nonblock = (filp->f_flags & O_NONBLOCK);
int ret;
- dctlprintk((KERN_INFO MYNAM "::sparc32_mpt_command() called\n"));
+ dctlprintk((KERN_INFO MYNAM "::compat_mpt_command() called\n"));
if (copy_from_user(&karg32, (char *)arg, sizeof(karg32)))
return -EFAULT;
@@ -2813,7 +2795,7 @@ sparc32_mpt_command(unsigned int fd, uns
iocnumX = karg32.hdr.iocnum & 0xFF;
if (((iocnum = mpt_verify_adapter(iocnumX, &iocp)) < 0) ||
(iocp == NULL)) {
- dctlprintk((KERN_ERR MYNAM "::sparc32_mpt_command @%d - ioc%d not found!\n",
+ dctlprintk((KERN_ERR MYNAM "::compat_mpt_command @%d - ioc%d not found!\n",
__LINE__, iocnumX));
return -ENODEV;
}
@@ -2846,8 +2828,7 @@ sparc32_mpt_command(unsigned int fd, uns
return ret;
}
-#endif /*} linux >= 2.3.x */
-#endif /*} sparc */
+#endif
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
int __init mptctl_init(void)
@@ -2893,8 +2874,7 @@ int __init mptctl_init(void)
}
}
-#if defined(__sparc__) && defined(__sparc_v9__) /*{*/
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0) /*{*/
+#ifdef CONFIG_COMPAT
err = register_ioctl32_conversion(MPTIOCINFO, NULL);
if (++where && err) goto out_fail;
err = register_ioctl32_conversion(MPTIOCINFO1, NULL);
@@ -2911,17 +2891,16 @@ int __init mptctl_init(void)
if (++where && err) goto out_fail;
err = register_ioctl32_conversion(MPTHARDRESET, NULL);
if (++where && err) goto out_fail;
- err = register_ioctl32_conversion(MPTCOMMAND32, sparc32_mpt_command);
+ err = register_ioctl32_conversion(MPTCOMMAND32, compat_mpt_command);
if (++where && err) goto out_fail;
err = register_ioctl32_conversion(MPTFWDOWNLOAD32,
- sparc32_mptfwxfer_ioctl);
+ compat_mptfwxfer_ioctl);
if (++where && err) goto out_fail;
err = register_ioctl32_conversion(HP_GETHOSTINFO, NULL);
if (++where && err) goto out_fail;
err = register_ioctl32_conversion(HP_GETTARGETINFO, NULL);
if (++where && err) goto out_fail;
-#endif /*} linux >= 2.3.x */
-#endif /*} sparc */
+#endif
/* Register this device */
err = misc_register(&mptctl_miscdev);
@@ -2954,8 +2933,7 @@ int __init mptctl_init(void)
out_fail:
-#if defined(__sparc__) && defined(__sparc_v9__) /*{*/
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0) /*{*/
+#ifdef CONFIG_COMPAT
printk(KERN_ERR MYNAM ": ERROR: Failed to register ioctl32_conversion!"
" (%d:err=%d)\n", where, err);
unregister_ioctl32_conversion(MPTIOCINFO);
@@ -2970,8 +2948,7 @@ out_fail:
unregister_ioctl32_conversion(MPTFWDOWNLOAD32);
unregister_ioctl32_conversion(HP_GETHOSTINFO);
unregister_ioctl32_conversion(HP_GETTARGETINFO);
-#endif /*} linux >= 2.3.x */
-#endif /*} sparc */
+#endif
for (i=0; i<MPT_MAX_ADAPTERS; i++) {
ioc = NULL;
diff -burpN -X ../KDIFX linux-vanilla/drivers/message/fusion/mptctl.h linux-2.6.0test5-amd64/drivers/message/fusion/mptctl.h
--- linux-vanilla/drivers/message/fusion/mptctl.h 2003-08-23 01:56:13.000000000 +0200
+++ linux-2.6.0test5-amd64/drivers/message/fusion/mptctl.h 2003-09-01 04:03:04.000000000 +0200
@@ -84,10 +84,10 @@
#define MPTFWDOWNLOAD _IOWR(MPT_MAGIC_NUMBER,15,struct mpt_fw_xfer)
#define MPTCOMMAND _IOWR(MPT_MAGIC_NUMBER,20,struct mpt_ioctl_command)
-#if defined(__KERNEL__) && defined(__sparc__) && defined(__sparc_v9__) /*{*/
+#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
#define MPTFWDOWNLOAD32 _IOWR(MPT_MAGIC_NUMBER,15,struct mpt_fw_xfer32)
#define MPTCOMMAND32 _IOWR(MPT_MAGIC_NUMBER,20,struct mpt_ioctl_command32)
-#endif /*}*/
+#endif
#define MPTIOCINFO _IOWR(MPT_MAGIC_NUMBER,17,struct mpt_ioctl_iocinfo)
#define MPTIOCINFO1 _IOWR(MPT_MAGIC_NUMBER,17,struct mpt_ioctl_iocinfo_rev0)
@@ -117,7 +117,7 @@ struct mpt_fw_xfer {
void *bufp; /* Pointer to firmware buffer */
};
-#if defined(__KERNEL__) && defined(__sparc__) && defined(__sparc_v9__) /*{*/
+#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
struct mpt_fw_xfer32 {
unsigned int iocnum;
unsigned int fwlen;
@@ -316,7 +316,7 @@ struct mpt_ioctl_command {
/*
* SPARC PLATFORM: See earlier remark.
*/
-#if defined(__KERNEL__) && defined(__sparc__) && defined(__sparc_v9__) /*{*/
+#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
struct mpt_ioctl_command32 {
mpt_ioctl_header hdr;
int timeout;
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2003-09-23 6:39 [PATCH] Generalize 32bit emulation support in MPT fusion Andi Kleen
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