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pata_cs5536: Add support for non-X86_32 platforms

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pata_cs5536 does work on the other platforms(e.g. Loongson, a MIPS
variant), so, remove the dependency of X86_32 and fix the building
errors under the other platforms via only reserving the X86_32 specific
parts for X86_32.

pata_amd also supports cs5536 IDE controller, but this one saves about
33k for the compressed kernel image(vmlinuz for MIPS).

Signed-off-by: Zhang Le <r0bertz@gentoo.org>
Signed-off-by: Chen Jie <chenj@lemote.com>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Wu Zhangjin 2010-12-24 21:39:08 +08:00 committed by Jeff Garzik
parent 687a993339
commit 9272dcc232
2 changed files with 13 additions and 7 deletions
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2
drivers/ata/Kconfig
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@ -366,7 +366,7 @@ config PATA_CS5535
config PATA_CS5536
tristate "CS5536 PATA support"
depends on PCI && X86 && !X86_64
depends on PCI
help
This option enables support for the AMD CS5536
companion chip used with the Geode LX processor family.

18
drivers/ata/pata_cs5536.c
View File

@ -37,10 +37,20 @@
#include <linux/delay.h>
#include <linux/libata.h>
#include <scsi/scsi_host.h>
#ifdef CONFIG_X86_32
#include <asm/msr.h>
static int use_msr;
module_param_named(msr, use_msr, int, 0644);
MODULE_PARM_DESC(msr, "Force using MSR to configure IDE function (Default: 0)");
#else
#define rdmsr(x, y, z) do { } while (0)
#define wrmsr(x, y, z) do { } while (0)
#define use_msr 0
#endif
#define DRV_NAME "pata_cs5536"
#define DRV_VERSION "0.0.7"
#define DRV_VERSION "0.0.8"
enum {
CFG = 0,
@ -75,8 +85,6 @@ enum {
IDE_ETC_NODMA = 0x03,
};
static int use_msr;
static const u32 msr_reg[4] = {
MSR_IDE_CFG, MSR_IDE_DTC, MSR_IDE_CAST, MSR_IDE_ETC,
};
@ -88,7 +96,7 @@ static const u8 pci_reg[4] = {
static inline int cs5536_read(struct pci_dev *pdev, int reg, u32 *val)
{
if (unlikely(use_msr)) {
u32 dummy;
u32 dummy __maybe_unused;
rdmsr(msr_reg[reg], *val, dummy);
return 0;
@ -294,8 +302,6 @@ MODULE_DESCRIPTION("low-level driver for the CS5536 IDE controller");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, cs5536);
MODULE_VERSION(DRV_VERSION);
module_param_named(msr, use_msr, int, 0644);
MODULE_PARM_DESC(msr, "Force using MSR to configure IDE function (Default: 0)");
module_init(cs5536_init);
module_exit(cs5536_exit);