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author | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-07-12 13:59:24 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-07-12 13:59:24 +0100 |
commit | cda390bb8f0fc751194ef5f4c691ca8d3ff91009 (patch) | |
tree | 9739758690c5107b73a09f632ae2f8fc2507db09 /arch/sparc/mm/iommu.c | |
parent | 9a2c33a422d60e8e55c5aff6752522dc39993b16 (diff) | |
parent | 449fd15fbcde239875031d70fd06abb4a0e1ed09 (diff) | |
download | linux-cda390bb8f0fc751194ef5f4c691ca8d3ff91009.tar.gz linux-cda390bb8f0fc751194ef5f4c691ca8d3ff91009.tar.bz2 linux-cda390bb8f0fc751194ef5f4c691ca8d3ff91009.zip |
Merge branch 'kprobes-test-fixes' of git://git.linaro.org/people/tixy/kernel into fixes
Diffstat (limited to 'arch/sparc/mm/iommu.c')
-rw-r--r-- | arch/sparc/mm/iommu.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c index 28f96f27c768..491511d37e37 100644 --- a/arch/sparc/mm/iommu.c +++ b/arch/sparc/mm/iommu.c @@ -27,6 +27,8 @@ #include <asm/iommu.h> #include <asm/dma.h> +#include "mm_32.h" + /* * This can be sized dynamically, but we will do this * only when we have a guidance about actual I/O pressures. @@ -37,9 +39,6 @@ #define IOMMU_NPTES (IOMMU_WINSIZE/PAGE_SIZE) /* 64K PTEs, 256KB */ #define IOMMU_ORDER 6 /* 4096 * (1<<6) */ -/* srmmu.c */ -extern int viking_mxcc_present; -extern int flush_page_for_dma_global; static int viking_flush; /* viking.S */ extern void viking_flush_page(unsigned long page); @@ -59,6 +58,8 @@ static void __init sbus_iommu_init(struct platform_device *op) struct iommu_struct *iommu; unsigned int impl, vers; unsigned long *bitmap; + unsigned long control; + unsigned long base; unsigned long tmp; iommu = kmalloc(sizeof(struct iommu_struct), GFP_KERNEL); @@ -73,12 +74,14 @@ static void __init sbus_iommu_init(struct platform_device *op) prom_printf("Cannot map IOMMU registers\n"); prom_halt(); } - impl = (iommu->regs->control & IOMMU_CTRL_IMPL) >> 28; - vers = (iommu->regs->control & IOMMU_CTRL_VERS) >> 24; - tmp = iommu->regs->control; - tmp &= ~(IOMMU_CTRL_RNGE); - tmp |= (IOMMU_RNGE_256MB | IOMMU_CTRL_ENAB); - iommu->regs->control = tmp; + + control = sbus_readl(&iommu->regs->control); + impl = (control & IOMMU_CTRL_IMPL) >> 28; + vers = (control & IOMMU_CTRL_VERS) >> 24; + control &= ~(IOMMU_CTRL_RNGE); + control |= (IOMMU_RNGE_256MB | IOMMU_CTRL_ENAB); + sbus_writel(control, &iommu->regs->control); + iommu_invalidate(iommu->regs); iommu->start = IOMMU_START; iommu->end = 0xffffffff; @@ -100,7 +103,9 @@ static void __init sbus_iommu_init(struct platform_device *op) memset(iommu->page_table, 0, IOMMU_NPTES*sizeof(iopte_t)); flush_cache_all(); flush_tlb_all(); - iommu->regs->base = __pa((unsigned long) iommu->page_table) >> 4; + + base = __pa((unsigned long)iommu->page_table) >> 4; + sbus_writel(base, &iommu->regs->base); iommu_invalidate(iommu->regs); bitmap = kmalloc(IOMMU_NPTES>>3, GFP_KERNEL); |