^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * ppc64 "iomap" interface implementation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * (C) Copyright 2004 Linus Torvalds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/pci-bridge.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/isa-bridge.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Here comes the ppc64 implementation of the IOMAP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * interfaces.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) unsigned int ioread8(const void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) return readb(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) unsigned int ioread16(const void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) return readw(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) unsigned int ioread16be(const void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) return readw_be(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) unsigned int ioread32(const void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return readl(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) unsigned int ioread32be(const void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) return readl_be(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) EXPORT_SYMBOL(ioread8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) EXPORT_SYMBOL(ioread16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) EXPORT_SYMBOL(ioread16be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) EXPORT_SYMBOL(ioread32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) EXPORT_SYMBOL(ioread32be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #ifdef __powerpc64__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) u64 ioread64(const void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) return readq(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) u64 ioread64_lo_hi(const void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return readq(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u64 ioread64_hi_lo(const void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return readq(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) u64 ioread64be(const void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return readq_be(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) u64 ioread64be_lo_hi(const void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return readq_be(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u64 ioread64be_hi_lo(const void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return readq_be(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) EXPORT_SYMBOL(ioread64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) EXPORT_SYMBOL(ioread64_lo_hi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) EXPORT_SYMBOL(ioread64_hi_lo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) EXPORT_SYMBOL(ioread64be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) EXPORT_SYMBOL(ioread64be_lo_hi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) EXPORT_SYMBOL(ioread64be_hi_lo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #endif /* __powerpc64__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) void iowrite8(u8 val, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) writeb(val, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) void iowrite16(u16 val, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) writew(val, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) void iowrite16be(u16 val, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) writew_be(val, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) void iowrite32(u32 val, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) writel(val, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) void iowrite32be(u32 val, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) writel_be(val, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) EXPORT_SYMBOL(iowrite8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) EXPORT_SYMBOL(iowrite16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) EXPORT_SYMBOL(iowrite16be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) EXPORT_SYMBOL(iowrite32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) EXPORT_SYMBOL(iowrite32be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #ifdef __powerpc64__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) void iowrite64(u64 val, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) writeq(val, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) void iowrite64_lo_hi(u64 val, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) writeq(val, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) void iowrite64_hi_lo(u64 val, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) writeq(val, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) void iowrite64be(u64 val, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) writeq_be(val, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) void iowrite64be_lo_hi(u64 val, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) writeq_be(val, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) void iowrite64be_hi_lo(u64 val, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) writeq_be(val, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) EXPORT_SYMBOL(iowrite64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) EXPORT_SYMBOL(iowrite64_lo_hi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) EXPORT_SYMBOL(iowrite64_hi_lo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) EXPORT_SYMBOL(iowrite64be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) EXPORT_SYMBOL(iowrite64be_lo_hi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) EXPORT_SYMBOL(iowrite64be_hi_lo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #endif /* __powerpc64__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * These are the "repeat read/write" functions. Note the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * non-CPU byte order. We do things in "IO byteorder"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * FIXME! We could make these do EEH handling if we really
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * wanted. Not clear if we do.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) void ioread8_rep(const void __iomem *addr, void *dst, unsigned long count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) readsb(addr, dst, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) void ioread16_rep(const void __iomem *addr, void *dst, unsigned long count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) readsw(addr, dst, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) void ioread32_rep(const void __iomem *addr, void *dst, unsigned long count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) readsl(addr, dst, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) EXPORT_SYMBOL(ioread8_rep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) EXPORT_SYMBOL(ioread16_rep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) EXPORT_SYMBOL(ioread32_rep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) writesb(addr, src, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) writesw(addr, src, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) writesl(addr, src, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) EXPORT_SYMBOL(iowrite8_rep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) EXPORT_SYMBOL(iowrite16_rep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) EXPORT_SYMBOL(iowrite32_rep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) void __iomem *ioport_map(unsigned long port, unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return (void __iomem *) (port + _IO_BASE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) void ioport_unmap(void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /* Nothing to do */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) EXPORT_SYMBOL(ioport_map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) EXPORT_SYMBOL(ioport_unmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) #ifdef CONFIG_PCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) if (isa_vaddr_is_ioport(addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (pcibios_vaddr_is_ioport(addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) iounmap(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) EXPORT_SYMBOL(pci_iounmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) #endif /* CONFIG_PCI */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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