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263 lines
6.0 KiB
Diff
263 lines
6.0 KiB
Diff
--- a/arch/powerpc/kernel/Makefile
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+++ b/arch/powerpc/kernel/Makefile
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@@ -125,9 +125,11 @@ obj-$(CONFIG_FSL_EMB_PERF_EVENT_E500) +=
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obj-$(CONFIG_8XX_MINIMAL_FPEMU) += softemu8xx.o
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+ifneq ($(CONFIG_RB_IOMAP),y)
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ifneq ($(CONFIG_PPC_INDIRECT_IO),y)
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obj-y += iomap.o
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endif
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+endif
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obj-$(CONFIG_PPC64) += $(obj64-y)
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obj-$(CONFIG_PPC32) += $(obj32-y)
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--- a/arch/powerpc/platforms/83xx/Makefile
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+++ b/arch/powerpc/platforms/83xx/Makefile
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@@ -7,6 +7,7 @@ obj-$(CONFIG_MCU_MPC8349EMITX) += mcu_mp
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obj-$(CONFIG_MPC830x_RDB) += mpc830x_rdb.o
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obj-$(CONFIG_MPC831x_RDB) += mpc831x_rdb.o
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obj-$(CONFIG_MPC832x_RDB) += mpc832x_rdb.o
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+obj-$(CONFIG_RB_PPC) += rbppc.o
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obj-$(CONFIG_MPC834x_MDS) += mpc834x_mds.o
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obj-$(CONFIG_MPC834x_ITX) += mpc834x_itx.o
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obj-$(CONFIG_MPC836x_MDS) += mpc836x_mds.o
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--- a/arch/powerpc/platforms/Kconfig
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+++ b/arch/powerpc/platforms/Kconfig
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@@ -175,6 +175,10 @@ config PPC_INDIRECT_MMIO
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config PPC_IO_WORKAROUNDS
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bool
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+config RB_IOMAP
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+ bool
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+ default y if RB_PPC
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+
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source "drivers/cpufreq/Kconfig"
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menu "CPU Frequency drivers"
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--- a/arch/powerpc/sysdev/Makefile
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+++ b/arch/powerpc/sysdev/Makefile
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@@ -65,3 +65,5 @@ obj-$(CONFIG_PPC_SCOM) += scom.o
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subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
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obj-$(CONFIG_PPC_XICS) += xics/
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+
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+obj-$(CONFIG_RB_IOMAP) += rb_iomap.o
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--- /dev/null
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+++ b/arch/powerpc/sysdev/rb_iomap.c
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@@ -0,0 +1,204 @@
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+#include <linux/init.h>
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+#include <linux/pci.h>
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+#include <linux/mm.h>
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+#include <asm/io.h>
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+
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+#define LOCALBUS_START 0x40000000
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+#define LOCALBUS_MASK 0x007fffff
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+#define LOCALBUS_REGMASK 0x001fffff
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+
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+static void __iomem *localbus_base;
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+
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+static inline int is_localbus(void __iomem *addr)
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+{
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+ return ((unsigned) addr & ~LOCALBUS_MASK) == LOCALBUS_START;
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+}
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+
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+static inline unsigned localbus_regoff(unsigned reg) {
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+ return (reg << 16) | (((reg ^ 8) & 8) << 17);
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+}
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+
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+static inline void __iomem *localbus_addr(void __iomem *addr)
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+{
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+ return localbus_base
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+ + ((unsigned) addr & LOCALBUS_MASK & ~LOCALBUS_REGMASK)
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+ + localbus_regoff((unsigned) addr & LOCALBUS_REGMASK);
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+}
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+
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+unsigned int ioread8(void __iomem *addr)
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+{
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+ if (is_localbus(addr))
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+ return in_be16(localbus_addr(addr)) >> 8;
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+ return readb(addr);
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+}
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+EXPORT_SYMBOL(ioread8);
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+
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+unsigned int ioread16(void __iomem *addr)
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+{
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+ if (is_localbus(addr))
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+ return le16_to_cpu(in_be16(localbus_addr(addr)));
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+ return readw(addr);
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+}
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+EXPORT_SYMBOL(ioread16);
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+
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+unsigned int ioread16be(void __iomem *addr)
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+{
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+ return in_be16(addr);
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+}
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+EXPORT_SYMBOL(ioread16be);
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+
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+unsigned int ioread32(void __iomem *addr)
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+{
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+ return readl(addr);
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+}
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+EXPORT_SYMBOL(ioread32);
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+
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+unsigned int ioread32be(void __iomem *addr)
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+{
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+ return in_be32(addr);
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+}
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+EXPORT_SYMBOL(ioread32be);
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+
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+void iowrite8(u8 val, void __iomem *addr)
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+{
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+ if (is_localbus(addr))
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+ out_be16(localbus_addr(addr), ((u16) val) << 8);
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+ else
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+ writeb(val, addr);
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+}
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+EXPORT_SYMBOL(iowrite8);
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+
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+void iowrite16(u16 val, void __iomem *addr)
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+{
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+ if (is_localbus(addr))
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+ out_be16(localbus_addr(addr), cpu_to_le16(val));
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+ else
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+ writew(val, addr);
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+}
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+EXPORT_SYMBOL(iowrite16);
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+
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+void iowrite16be(u16 val, void __iomem *addr)
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+{
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+ out_be16(addr, val);
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+}
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+EXPORT_SYMBOL(iowrite16be);
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+
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+void iowrite32(u32 val, void __iomem *addr)
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+{
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+ writel(val, addr);
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+}
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+EXPORT_SYMBOL(iowrite32);
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+
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+void iowrite32be(u32 val, void __iomem *addr)
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+{
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+ out_be32(addr, val);
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+}
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+EXPORT_SYMBOL(iowrite32be);
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+
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+void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
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+{
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+ if (is_localbus(addr)) {
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+ unsigned i;
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+ void *laddr = localbus_addr(addr);
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+ u8 *buf = dst;
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+
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+ for (i = 0; i < count; ++i) {
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+ *buf++ = in_be16(laddr) >> 8;
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+ }
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+ } else {
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+ _insb((u8 __iomem *) addr, dst, count);
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+ }
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+}
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+EXPORT_SYMBOL(ioread8_rep);
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+
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+void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
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+{
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+ if (is_localbus(addr)) {
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+ unsigned i;
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+ void *laddr = localbus_addr(addr);
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+ u16 *buf = dst;
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+
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+ for (i = 0; i < count; ++i) {
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+ *buf++ = in_be16(laddr);
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+ }
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+ } else {
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+ _insw_ns((u16 __iomem *) addr, dst, count);
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+ }
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+}
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+EXPORT_SYMBOL(ioread16_rep);
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+
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+void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
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+{
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+ _insl_ns((u32 __iomem *) addr, dst, count);
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+}
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+EXPORT_SYMBOL(ioread32_rep);
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+
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+void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
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+{
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+ if (is_localbus(addr)) {
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+ unsigned i;
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+ void *laddr = localbus_addr(addr);
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+ const u8 *buf = src;
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+
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+ for (i = 0; i < count; ++i) {
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+ out_be16(laddr, ((u16) *buf++) << 8);
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+ }
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+ } else {
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+ _outsb((u8 __iomem *) addr, src, count);
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+ }
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+}
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+EXPORT_SYMBOL(iowrite8_rep);
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+
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+void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
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+{
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+ if (is_localbus(addr)) {
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+ unsigned i;
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+ void *laddr = localbus_addr(addr);
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+ const u16 *buf = src;
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+
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+ for (i = 0; i < count; ++i) {
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+ out_be16(laddr, *buf++);
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+ }
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+ } else {
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+ _outsw_ns((u16 __iomem *) addr, src, count);
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+ }
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+}
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+EXPORT_SYMBOL(iowrite16_rep);
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+
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+void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
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+{
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+ _outsl_ns((u32 __iomem *) addr, src, count);
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+}
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+EXPORT_SYMBOL(iowrite32_rep);
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+
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+void __iomem *ioport_map(unsigned long port, unsigned int len)
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+{
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+ return (void __iomem *) (port + _IO_BASE);
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+}
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+EXPORT_SYMBOL(ioport_unmap);
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+
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+void ioport_unmap(void __iomem *addr)
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+{
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+ /* Nothing to do */
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+}
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+EXPORT_SYMBOL(ioport_map);
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+
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+void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
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+{
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+ /* Nothing to do */
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+}
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+EXPORT_SYMBOL(pci_iounmap);
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+
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+void __iomem *localbus_map(unsigned long addr, unsigned int len)
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+{
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+ if (!localbus_base)
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+ localbus_base = ioremap(addr & ~LOCALBUS_MASK,
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+ LOCALBUS_MASK + 1);
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+ return (void *) (LOCALBUS_START + (addr & LOCALBUS_MASK));
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+}
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+EXPORT_SYMBOL(localbus_map);
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+
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+void localbus_unmap(void __iomem *addr)
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+{
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+}
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+EXPORT_SYMBOL(localbus_unmap);
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--- a/arch/powerpc/platforms/83xx/Kconfig
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+++ b/arch/powerpc/platforms/83xx/Kconfig
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@@ -44,6 +44,7 @@ config RB_PPC
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select QUICC_ENGINE
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select PPC_MPC832x
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select PPC_MPC834x
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+ select RB_IOMAP
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help
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This option enables support for MikroTik RouterBOARD 333/600 series boards.
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