diff options
Diffstat (limited to 'arch/mips/lib')
| -rw-r--r-- | arch/mips/lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/lib/iomap-pci.c | 7 | ||||
| -rw-r--r-- | arch/mips/lib/iomap.c | 227 | ||||
| -rw-r--r-- | arch/mips/lib/memcpy.S | 22 | ||||
| -rw-r--r-- | arch/mips/lib/memset.S | 60 |
5 files changed, 44 insertions, 274 deletions
diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile index 6537e022ef62..479f50559c83 100644 --- a/arch/mips/lib/Makefile +++ b/arch/mips/lib/Makefile @@ -7,7 +7,7 @@ lib-y += bitops.o csum_partial.o delay.o memcpy.o memset.o \ mips-atomic.o strncpy_user.o \ strnlen_user.o uncached.o -obj-y += iomap.o iomap_copy.o +obj-y += iomap_copy.o obj-$(CONFIG_PCI) += iomap-pci.o lib-$(CONFIG_GENERIC_CSUM) := $(filter-out csum_partial.o, $(lib-y)) diff --git a/arch/mips/lib/iomap-pci.c b/arch/mips/lib/iomap-pci.c index 4850509c5534..210f5a95ecb1 100644 --- a/arch/mips/lib/iomap-pci.c +++ b/arch/mips/lib/iomap-pci.c @@ -44,10 +44,3 @@ void __iomem *__pci_ioport_map(struct pci_dev *dev, } #endif /* CONFIG_PCI_DRIVERS_LEGACY */ - -void pci_iounmap(struct pci_dev *dev, void __iomem * addr) -{ - iounmap(addr); -} - -EXPORT_SYMBOL(pci_iounmap); diff --git a/arch/mips/lib/iomap.c b/arch/mips/lib/iomap.c deleted file mode 100644 index 9b31653f318c..000000000000 --- a/arch/mips/lib/iomap.c +++ /dev/null @@ -1,227 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Implement the default iomap interfaces - * - * (C) Copyright 2004 Linus Torvalds - * (C) Copyright 2006 Ralf Baechle <ralf@linux-mips.org> - * (C) Copyright 2007 MIPS Technologies, Inc. - * written by Ralf Baechle <ralf@linux-mips.org> - */ -#include <linux/export.h> -#include <asm/io.h> - -/* - * Read/write from/to an (offsettable) iomem cookie. It might be a PIO - * access or a MMIO access, these functions don't care. The info is - * encoded in the hardware mapping set up by the mapping functions - * (or the cookie itself, depending on implementation and hw). - * - * The generic routines don't assume any hardware mappings, and just - * encode the PIO/MMIO as part of the cookie. They coldly assume that - * the MMIO IO mappings are not in the low address range. - * - * Architectures for which this is not true can't use this generic - * implementation and should do their own copy. - */ - -#define PIO_MASK 0x0ffffUL - -unsigned int ioread8(void __iomem *addr) -{ - return readb(addr); -} - -EXPORT_SYMBOL(ioread8); - -unsigned int ioread16(void __iomem *addr) -{ - return readw(addr); -} - -EXPORT_SYMBOL(ioread16); - -unsigned int ioread16be(void __iomem *addr) -{ - return be16_to_cpu(__raw_readw(addr)); -} - -EXPORT_SYMBOL(ioread16be); - -unsigned int ioread32(void __iomem *addr) -{ - return readl(addr); -} - -EXPORT_SYMBOL(ioread32); - -unsigned int ioread32be(void __iomem *addr) -{ - return be32_to_cpu(__raw_readl(addr)); -} - -EXPORT_SYMBOL(ioread32be); - -void iowrite8(u8 val, void __iomem *addr) -{ - writeb(val, addr); -} - -EXPORT_SYMBOL(iowrite8); - -void iowrite16(u16 val, void __iomem *addr) -{ - writew(val, addr); -} - -EXPORT_SYMBOL(iowrite16); - -void iowrite16be(u16 val, void __iomem *addr) -{ - __raw_writew(cpu_to_be16(val), addr); -} - -EXPORT_SYMBOL(iowrite16be); - -void iowrite32(u32 val, void __iomem *addr) -{ - writel(val, addr); -} - -EXPORT_SYMBOL(iowrite32); - -void iowrite32be(u32 val, void __iomem *addr) -{ - __raw_writel(cpu_to_be32(val), addr); -} - -EXPORT_SYMBOL(iowrite32be); - -/* - * These are the "repeat MMIO read/write" functions. - * Note the "__mem" accesses, since we want to convert - * to CPU byte order if the host bus happens to not match the - * endianness of PCI/ISA (see mach-generic/mangle-port.h). - */ -static inline void mmio_insb(void __iomem *addr, u8 *dst, int count) -{ - while (--count >= 0) { - u8 data = __mem_readb(addr); - *dst = data; - dst++; - } -} - -static inline void mmio_insw(void __iomem *addr, u16 *dst, int count) -{ - while (--count >= 0) { - u16 data = __mem_readw(addr); - *dst = data; - dst++; - } -} - -static inline void mmio_insl(void __iomem *addr, u32 *dst, int count) -{ - while (--count >= 0) { - u32 data = __mem_readl(addr); - *dst = data; - dst++; - } -} - -static inline void mmio_outsb(void __iomem *addr, const u8 *src, int count) -{ - while (--count >= 0) { - __mem_writeb(*src, addr); - src++; - } -} - -static inline void mmio_outsw(void __iomem *addr, const u16 *src, int count) -{ - while (--count >= 0) { - __mem_writew(*src, addr); - src++; - } -} - -static inline void mmio_outsl(void __iomem *addr, const u32 *src, int count) -{ - while (--count >= 0) { - __mem_writel(*src, addr); - src++; - } -} - -void ioread8_rep(void __iomem *addr, void *dst, unsigned long count) -{ - mmio_insb(addr, dst, count); -} - -EXPORT_SYMBOL(ioread8_rep); - -void ioread16_rep(void __iomem *addr, void *dst, unsigned long count) -{ - mmio_insw(addr, dst, count); -} - -EXPORT_SYMBOL(ioread16_rep); - -void ioread32_rep(void __iomem *addr, void *dst, unsigned long count) -{ - mmio_insl(addr, dst, count); -} - -EXPORT_SYMBOL(ioread32_rep); - -void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count) -{ - mmio_outsb(addr, src, count); -} - -EXPORT_SYMBOL(iowrite8_rep); - -void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count) -{ - mmio_outsw(addr, src, count); -} - -EXPORT_SYMBOL(iowrite16_rep); - -void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count) -{ - mmio_outsl(addr, src, count); -} - -EXPORT_SYMBOL(iowrite32_rep); - -/* - * Create a virtual mapping cookie for an IO port range - * - * This uses the same mapping are as the in/out family which has to be setup - * by the platform initialization code. - * - * Just to make matters somewhat more interesting on MIPS systems with - * multiple host bridge each will have it's own ioport address space. - */ -static void __iomem *ioport_map_legacy(unsigned long port, unsigned int nr) -{ - return (void __iomem *) (mips_io_port_base + port); -} - -void __iomem *ioport_map(unsigned long port, unsigned int nr) -{ - if (port > PIO_MASK) - return NULL; - - return ioport_map_legacy(port, nr); -} - -EXPORT_SYMBOL(ioport_map); - -void ioport_unmap(void __iomem *addr) -{ - /* Nothing to do */ -} - -EXPORT_SYMBOL(ioport_unmap); diff --git a/arch/mips/lib/memcpy.S b/arch/mips/lib/memcpy.S index 03e3304d6ae5..cdd19d8561e8 100644 --- a/arch/mips/lib/memcpy.S +++ b/arch/mips/lib/memcpy.S @@ -204,9 +204,10 @@ #define LOADB(reg, addr, handler) EXC(lb, LD_INSN, reg, addr, handler) #define STOREB(reg, addr, handler) EXC(sb, ST_INSN, reg, addr, handler) -#define _PREF(hint, addr, type) \ +#ifdef CONFIG_CPU_HAS_PREFETCH +# define _PREF(hint, addr, type) \ .if \mode == LEGACY_MODE; \ - PREF(hint, addr); \ + kernel_pref(hint, addr); \ .else; \ .if ((\from == USEROP) && (type == SRC_PREFETCH)) || \ ((\to == USEROP) && (type == DST_PREFETCH)); \ @@ -218,12 +219,15 @@ * used later on. Therefore use $v1. \ */ \ .set at=v1; \ - PREFE(hint, addr); \ + user_pref(hint, addr); \ .set noat; \ .else; \ - PREF(hint, addr); \ + kernel_pref(hint, addr); \ .endif; \ .endif +#else +# define _PREF(hint, addr, type) +#endif #define PREFS(hint, addr) _PREF(hint, addr, SRC_PREFETCH) #define PREFD(hint, addr) _PREF(hint, addr, DST_PREFETCH) @@ -297,7 +301,7 @@ and t0, src, ADDRMASK PREFS( 0, 2*32(src) ) PREFD( 1, 2*32(dst) ) -#ifndef CONFIG_CPU_MIPSR6 +#ifdef CONFIG_CPU_HAS_LOAD_STORE_LR bnez t1, .Ldst_unaligned\@ nop bnez t0, .Lsrc_unaligned_dst_aligned\@ @@ -385,7 +389,7 @@ bne rem, len, 1b .set noreorder -#ifndef CONFIG_CPU_MIPSR6 +#ifdef CONFIG_CPU_HAS_LOAD_STORE_LR /* * src and dst are aligned, need to copy rem bytes (rem < NBYTES) * A loop would do only a byte at a time with possible branch @@ -487,7 +491,7 @@ bne len, rem, 1b .set noreorder -#endif /* !CONFIG_CPU_MIPSR6 */ +#endif /* CONFIG_CPU_HAS_LOAD_STORE_LR */ .Lcopy_bytes_checklen\@: beqz len, .Ldone\@ nop @@ -516,7 +520,7 @@ jr ra nop -#ifdef CONFIG_CPU_MIPSR6 +#ifndef CONFIG_CPU_HAS_LOAD_STORE_LR .Lcopy_unaligned_bytes\@: 1: COPY_BYTE(0) @@ -530,7 +534,7 @@ ADD src, src, 8 b 1b ADD dst, dst, 8 -#endif /* CONFIG_CPU_MIPSR6 */ +#endif /* !CONFIG_CPU_HAS_LOAD_STORE_LR */ .if __memcpy == 1 END(memcpy) .set __memcpy, 0 diff --git a/arch/mips/lib/memset.S b/arch/mips/lib/memset.S index 069acec3df9f..418611ef13cf 100644 --- a/arch/mips/lib/memset.S +++ b/arch/mips/lib/memset.S @@ -78,7 +78,6 @@ #endif .endm - .set noreorder .align 5 /* @@ -94,13 +93,16 @@ .endif sltiu t0, a2, STORSIZE /* very small region? */ + .set noreorder bnez t0, .Lsmall_memset\@ andi t0, a0, STORMASK /* aligned? */ + .set reorder #ifdef CONFIG_CPU_MICROMIPS move t8, a1 /* used by 'swp' instruction */ move t9, a1 #endif + .set noreorder #ifndef CONFIG_CPU_DADDI_WORKAROUNDS beqz t0, 1f PTR_SUBU t0, STORSIZE /* alignment in bytes */ @@ -111,8 +113,9 @@ PTR_SUBU t0, AT /* alignment in bytes */ .set at #endif + .set reorder -#ifndef CONFIG_CPU_MIPSR6 +#ifdef CONFIG_CPU_HAS_LOAD_STORE_LR R10KCBARRIER(0(ra)) #ifdef __MIPSEB__ EX(LONG_S_L, a1, (a0), .Lfirst_fixup\@) /* make word/dword aligned */ @@ -122,11 +125,13 @@ PTR_SUBU a0, t0 /* long align ptr */ PTR_ADDU a2, t0 /* correct size */ -#else /* CONFIG_CPU_MIPSR6 */ +#else /* !CONFIG_CPU_HAS_LOAD_STORE_LR */ #define STORE_BYTE(N) \ EX(sb, a1, N(a0), .Lbyte_fixup\@); \ + .set noreorder; \ beqz t0, 0f; \ - PTR_ADDU t0, 1; + PTR_ADDU t0, 1; \ + .set reorder; PTR_ADDU a2, t0 /* correct size */ PTR_ADDU t0, 1 @@ -145,19 +150,17 @@ ori a0, STORMASK xori a0, STORMASK PTR_ADDIU a0, STORSIZE -#endif /* CONFIG_CPU_MIPSR6 */ +#endif /* !CONFIG_CPU_HAS_LOAD_STORE_LR */ 1: ori t1, a2, 0x3f /* # of full blocks */ xori t1, 0x3f + andi t0, a2, 0x40-STORSIZE beqz t1, .Lmemset_partial\@ /* no block to fill */ - andi t0, a2, 0x40-STORSIZE PTR_ADDU t1, a0 /* end address */ - .set reorder 1: PTR_ADDIU a0, 64 R10KCBARRIER(0(ra)) f_fill64 a0, -64, FILL64RG, .Lfwd_fixup\@, \mode bne t1, a0, 1b - .set noreorder .Lmemset_partial\@: R10KCBARRIER(0(ra)) @@ -173,20 +176,18 @@ PTR_SUBU t1, AT .set at #endif + PTR_ADDU a0, t0 /* dest ptr */ jr t1 - PTR_ADDU a0, t0 /* dest ptr */ - .set push - .set noreorder - .set nomacro /* ... but first do longs ... */ f_fill64 a0, -64, FILL64RG, .Lpartial_fixup\@, \mode -2: .set pop - andi a2, STORMASK /* At most one long to go */ +2: andi a2, STORMASK /* At most one long to go */ + .set noreorder beqz a2, 1f -#ifndef CONFIG_CPU_MIPSR6 +#ifdef CONFIG_CPU_HAS_LOAD_STORE_LR PTR_ADDU a0, a2 /* What's left */ + .set reorder R10KCBARRIER(0(ra)) #ifdef __MIPSEB__ EX(LONG_S_R, a1, -1(a0), .Llast_fixup\@) @@ -195,6 +196,7 @@ #endif #else PTR_SUBU t0, $0, a2 + .set reorder move a2, zero /* No remaining longs */ PTR_ADDIU t0, 1 STORE_BYTE(0) @@ -210,41 +212,42 @@ #endif 0: #endif -1: jr ra - move a2, zero +1: move a2, zero + jr ra .Lsmall_memset\@: + PTR_ADDU t1, a0, a2 beqz a2, 2f - PTR_ADDU t1, a0, a2 1: PTR_ADDIU a0, 1 /* fill bytewise */ R10KCBARRIER(0(ra)) + .set noreorder bne t1, a0, 1b EX(sb, a1, -1(a0), .Lsmall_fixup\@) + .set reorder -2: jr ra /* done */ - move a2, zero +2: move a2, zero + jr ra /* done */ .if __memset == 1 END(memset) .set __memset, 0 .hidden __memset .endif -#ifdef CONFIG_CPU_MIPSR6 +#ifndef CONFIG_CPU_HAS_LOAD_STORE_LR .Lbyte_fixup\@: /* * unset_bytes = (#bytes - (#unaligned bytes)) - (-#unaligned bytes remaining + 1) + 1 * a2 = a2 - t0 + 1 */ PTR_SUBU a2, t0 + PTR_ADDIU a2, 1 jr ra - PTR_ADDIU a2, 1 -#endif /* CONFIG_CPU_MIPSR6 */ +#endif /* !CONFIG_CPU_HAS_LOAD_STORE_LR */ .Lfirst_fixup\@: /* unset_bytes already in a2 */ jr ra - nop .Lfwd_fixup\@: /* @@ -255,8 +258,8 @@ andi a2, 0x3f LONG_L t0, THREAD_BUADDR(t0) LONG_ADDU a2, t1 + LONG_SUBU a2, t0 jr ra - LONG_SUBU a2, t0 .Lpartial_fixup\@: /* @@ -267,24 +270,21 @@ andi a2, STORMASK LONG_L t0, THREAD_BUADDR(t0) LONG_ADDU a2, a0 + LONG_SUBU a2, t0 jr ra - LONG_SUBU a2, t0 .Llast_fixup\@: /* unset_bytes already in a2 */ jr ra - nop .Lsmall_fixup\@: /* * unset_bytes = end_addr - current_addr + 1 * a2 = t1 - a0 + 1 */ - .set reorder PTR_SUBU a2, t1, a0 PTR_ADDIU a2, 1 jr ra - .set noreorder .endm @@ -298,8 +298,8 @@ LEAF(memset) EXPORT_SYMBOL(memset) + move v0, a0 /* result */ beqz a1, 1f - move v0, a0 /* result */ andi a1, 0xff /* spread fillword */ LONG_SLL t1, a1, 8 |