diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/io.c | 14 | ||||
| -rw-r--r-- | arch/powerpc/platforms/iseries/pci.c | 280 |
2 files changed, 242 insertions, 52 deletions
diff --git a/arch/powerpc/kernel/io.c b/arch/powerpc/kernel/io.c index 80a3209acef..e98180686b3 100644 --- a/arch/powerpc/kernel/io.c +++ b/arch/powerpc/kernel/io.c @@ -22,12 +22,16 @@ #include <linux/module.h> #include <asm/io.h> +#include <asm/firmware.h> +#include <asm/bug.h> void _insb(volatile u8 __iomem *port, void *buf, long count) { u8 *tbuf = buf; u8 tmp; + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + if (unlikely(count <= 0)) return; asm volatile("sync"); @@ -44,6 +48,8 @@ void _outsb(volatile u8 __iomem *port, const void *buf, long count) { const u8 *tbuf = buf; + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + if (unlikely(count <= 0)) return; asm volatile("sync"); @@ -59,6 +65,8 @@ void _insw_ns(volatile u16 __iomem *port, void *buf, long count) u16 *tbuf = buf; u16 tmp; + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + if (unlikely(count <= 0)) return; asm volatile("sync"); @@ -75,6 +83,8 @@ void _outsw_ns(volatile u16 __iomem *port, const void *buf, long count) { const u16 *tbuf = buf; + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + if (unlikely(count <= 0)) return; asm volatile("sync"); @@ -90,6 +100,8 @@ void _insl_ns(volatile u32 __iomem *port, void *buf, long count) u32 *tbuf = buf; u32 tmp; + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + if (unlikely(count <= 0)) return; asm volatile("sync"); @@ -106,6 +118,8 @@ void _outsl_ns(volatile u32 __iomem *port, const void *buf, long count) { const u32 *tbuf = buf; + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + if (unlikely(count <= 0)) return; asm volatile("sync"); diff --git a/arch/powerpc/platforms/iseries/pci.c b/arch/powerpc/platforms/iseries/pci.c index f4d427a7bb2..3eb12065df2 100644 --- a/arch/powerpc/platforms/iseries/pci.c +++ b/arch/powerpc/platforms/iseries/pci.c @@ -34,6 +34,7 @@ #include <asm/pci-bridge.h> #include <asm/iommu.h> #include <asm/abs_addr.h> +#include <asm/firmware.h> #include <asm/iseries/hv_call_xm.h> #include <asm/iseries/mf.h> @@ -270,46 +271,6 @@ void pcibios_fixup_resources(struct pci_dev *pdev) } /* - * I/0 Memory copy MUST use mmio commands on iSeries - * To do; For performance, include the hv call directly - */ -void iSeries_memset_io(volatile void __iomem *dest, char c, size_t Count) -{ - u8 ByteValue = c; - long NumberOfBytes = Count; - - while (NumberOfBytes > 0) { - iSeries_Write_Byte(ByteValue, dest++); - -- NumberOfBytes; - } -} -EXPORT_SYMBOL(iSeries_memset_io); - -void iSeries_memcpy_toio(volatile void __iomem *dest, void *source, size_t count) -{ - char *src = source; - long NumberOfBytes = count; - - while (NumberOfBytes > 0) { - iSeries_Write_Byte(*src++, dest++); - -- NumberOfBytes; - } -} -EXPORT_SYMBOL(iSeries_memcpy_toio); - -void iSeries_memcpy_fromio(void *dest, const volatile void __iomem *src, size_t count) -{ - char *dst = dest; - long NumberOfBytes = count; - - while (NumberOfBytes > 0) { - *dst++ = iSeries_Read_Byte(src++); - -- NumberOfBytes; - } -} -EXPORT_SYMBOL(iSeries_memcpy_fromio); - -/* * Look down the chain to find the matching Device Device */ static struct device_node *find_Device_Node(int bus, int devfn) @@ -491,7 +452,7 @@ static inline struct device_node *xlate_iomm_address( * iSeries_Read_Word = Read Word (16 bit) * iSeries_Read_Long = Read Long (32 bit) */ -u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress) +static u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress) { u64 BarOffset; u64 dsa; @@ -518,9 +479,8 @@ u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress) return (u8)ret.value; } -EXPORT_SYMBOL(iSeries_Read_Byte); -u16 iSeries_Read_Word(const volatile void __iomem *IoAddress) +static u16 iSeries_Read_Word(const volatile void __iomem *IoAddress) { u64 BarOffset; u64 dsa; @@ -548,9 +508,8 @@ u16 iSeries_Read_Word(const volatile void __iomem *IoAddress) return swab16((u16)ret.value); } -EXPORT_SYMBOL(iSeries_Read_Word); -u32 iSeries_Read_Long(const volatile void __iomem *IoAddress) +static u32 iSeries_Read_Long(const volatile void __iomem *IoAddress) { u64 BarOffset; u64 dsa; @@ -578,7 +537,6 @@ u32 iSeries_Read_Long(const volatile void __iomem *IoAddress) return swab32((u32)ret.value); } -EXPORT_SYMBOL(iSeries_Read_Long); /* * Write MM I/O Instructions for the iSeries @@ -587,7 +545,7 @@ EXPORT_SYMBOL(iSeries_Read_Long); * iSeries_Write_Word = Write Word(16 bit) * iSeries_Write_Long = Write Long(32 bit) */ -void iSeries_Write_Byte(u8 data, volatile void __iomem *IoAddress) +static void iSeries_Write_Byte(u8 data, volatile void __iomem *IoAddress) { u64 BarOffset; u64 dsa; @@ -612,9 +570,8 @@ void iSeries_Write_Byte(u8 data, volatile void __iomem *IoAddress) rc = HvCall4(HvCallPciBarStore8, dsa, BarOffset, data, 0); } while (CheckReturnCode("WWB", DevNode, &retry, rc) != 0); } -EXPORT_SYMBOL(iSeries_Write_Byte); -void iSeries_Write_Word(u16 data, volatile void __iomem *IoAddress) +static void iSeries_Write_Word(u16 data, volatile void __iomem *IoAddress) { u64 BarOffset; u64 dsa; @@ -639,9 +596,8 @@ void iSeries_Write_Word(u16 data, volatile void __iomem *IoAddress) rc = HvCall4(HvCallPciBarStore16, dsa, BarOffset, swab16(data), 0); } while (CheckReturnCode("WWW", DevNode, &retry, rc) != 0); } -EXPORT_SYMBOL(iSeries_Write_Word); -void iSeries_Write_Long(u32 data, volatile void __iomem *IoAddress) +static void iSeries_Write_Long(u32 data, volatile void __iomem *IoAddress) { u64 BarOffset; u64 dsa; @@ -666,4 +622,224 @@ void iSeries_Write_Long(u32 data, volatile void __iomem *IoAddress) rc = HvCall4(HvCallPciBarStore32, dsa, BarOffset, swab32(data), 0); } while (CheckReturnCode("WWL", DevNode, &retry, rc) != 0); } -EXPORT_SYMBOL(iSeries_Write_Long); + +extern unsigned char __raw_readb(const volatile void __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + return *(volatile unsigned char __force *)addr; +} +EXPORT_SYMBOL(__raw_readb); + +extern unsigned short __raw_readw(const volatile void __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + return *(volatile unsigned short __force *)addr; +} +EXPORT_SYMBOL(__raw_readw); + +extern unsigned int __raw_readl(const volatile void __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + return *(volatile unsigned int __force *)addr; +} +EXPORT_SYMBOL(__raw_readl); + +extern unsigned long __raw_readq(const volatile void __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + return *(volatile unsigned long __force *)addr; +} +EXPORT_SYMBOL(__raw_readq); + +extern void __raw_writeb(unsigned char v, volatile void __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + *(volatile unsigned char __force *)addr = v; +} +EXPORT_SYMBOL(__raw_writeb); + +extern void __raw_writew(unsigned short v, volatile void __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + *(volatile unsigned short __force *)addr = v; +} +EXPORT_SYMBOL(__raw_writew); + +extern void __raw_writel(unsigned int v, volatile void __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + *(volatile unsigned int __force *)addr = v; +} +EXPORT_SYMBOL(__raw_writel); + +extern void __raw_writeq(unsigned long v, volatile void __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + *(volatile unsigned long __force *)addr = v; +} +EXPORT_SYMBOL(__raw_writeq); + +int in_8(const volatile unsigned char __iomem *addr) +{ + if (firmware_has_feature(FW_FEATURE_ISERIES)) + return iSeries_Read_Byte(addr); + return __in_8(addr); +} +EXPORT_SYMBOL(in_8); + +void out_8(volatile unsigned char __iomem *addr, int val) +{ + if (firmware_has_feature(FW_FEATURE_ISERIES)) + iSeries_Write_Byte(val, addr); + else + __out_8(addr, val); +} +EXPORT_SYMBOL(out_8); + +int in_le16(const volatile unsigned short __iomem *addr) +{ + if (firmware_has_feature(FW_FEATURE_ISERIES)) + return iSeries_Read_Word(addr); + return __in_le16(addr); +} +EXPORT_SYMBOL(in_le16); + +int in_be16(const volatile unsigned short __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + return __in_be16(addr); +} +EXPORT_SYMBOL(in_be16); + +void out_le16(volatile unsigned short __iomem *addr, int val) +{ + if (firmware_has_feature(FW_FEATURE_ISERIES)) + iSeries_Write_Word(val, addr); + else + __out_le16(addr, val); +} +EXPORT_SYMBOL(out_le16); + +void out_be16(volatile unsigned short __iomem *addr, int val) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + __out_be16(addr, val); +} +EXPORT_SYMBOL(out_be16); + +unsigned in_le32(const volatile unsigned __iomem *addr) +{ + if (firmware_has_feature(FW_FEATURE_ISERIES)) + return iSeries_Read_Long(addr); + return __in_le32(addr); +} +EXPORT_SYMBOL(in_le32); + +unsigned in_be32(const volatile unsigned __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + return __in_be32(addr); +} +EXPORT_SYMBOL(in_be32); + +void out_le32(volatile unsigned __iomem *addr, int val) +{ + if (firmware_has_feature(FW_FEATURE_ISERIES)) + iSeries_Write_Long(val, addr); + else + __out_le32(addr, val); +} +EXPORT_SYMBOL(out_le32); + +void out_be32(volatile unsigned __iomem *addr, int val) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + __out_be32(addr, val); +} +EXPORT_SYMBOL(out_be32); + +unsigned long in_le64(const volatile unsigned long __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + return __in_le64(addr); +} +EXPORT_SYMBOL(in_le64); + +unsigned long in_be64(const volatile unsigned long __iomem *addr) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + return __in_be64(addr); +} +EXPORT_SYMBOL(in_be64); + +void out_le64(volatile unsigned long __iomem *addr, unsigned long val) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + __out_le64(addr, val); +} +EXPORT_SYMBOL(out_le64); + +void out_be64(volatile unsigned long __iomem *addr, unsigned long val) +{ + BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES)); + + __out_be64(addr, val); +} +EXPORT_SYMBOL(out_be64); + +void memset_io(volatile void __iomem *addr, int c, unsigned long n) +{ + if (firmware_has_feature(FW_FEATURE_ISERIES)) { + volatile char __iomem *d = addr; + + while (n-- > 0) { + iSeries_Write_Byte(c, d++); + } + } else + eeh_memset_io(addr, c, n); +} +EXPORT_SYMBOL(memset_io); + +void memcpy_fromio(void *dest, const volatile void __iomem *src, + unsigned long n) +{ + if (firmware_has_feature(FW_FEATURE_ISERIES)) { + char *d = dest; + const volatile char __iomem *s = src; + + while (n-- > 0) { + *d++ = iSeries_Read_Byte(s++); + } + } else + eeh_memcpy_fromio(dest, src, n); +} +EXPORT_SYMBOL(memcpy_fromio); + +void memcpy_toio(volatile void __iomem *dest, const void *src, unsigned long n) +{ + if (firmware_has_feature(FW_FEATURE_ISERIES)) { + const char *s = src; + volatile char __iomem *d = dest; + + while (n-- > 0) { + iSeries_Write_Byte(*s++, d++); + } + } else + eeh_memcpy_toio(dest, src, n); +} +EXPORT_SYMBOL(memcpy_toio); |