diff options
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/include/asm/dma-mapping.h | 2 | ||||
| -rw-r--r-- | arch/ia64/include/asm/machvec.h | 7 | ||||
| -rw-r--r-- | arch/ia64/include/asm/machvec_init.h | 1 | ||||
| -rw-r--r-- | arch/ia64/include/asm/machvec_sn2.h | 2 | ||||
| -rw-r--r-- | arch/ia64/pci/pci.c | 27 | ||||
| -rw-r--r-- | arch/ia64/sn/pci/pci_dma.c | 6 |
6 files changed, 45 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h index bbab7e2b0fc..1f912d92758 100644 --- a/arch/ia64/include/asm/dma-mapping.h +++ b/arch/ia64/include/asm/dma-mapping.h @@ -9,6 +9,8 @@ #include <linux/scatterlist.h> #include <asm/swiotlb.h> +#define ARCH_HAS_DMA_GET_REQUIRED_MASK + struct dma_mapping_ops { int (*mapping_error)(struct device *dev, dma_addr_t dma_addr); diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h index 59c17e44668..fe87b212170 100644 --- a/arch/ia64/include/asm/machvec.h +++ b/arch/ia64/include/asm/machvec.h @@ -62,6 +62,7 @@ typedef dma_addr_t ia64_mv_dma_map_single_attrs (struct device *, void *, size_t typedef void ia64_mv_dma_unmap_single_attrs (struct device *, dma_addr_t, size_t, int, struct dma_attrs *); typedef int ia64_mv_dma_map_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *); typedef void ia64_mv_dma_unmap_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *); +typedef u64 ia64_mv_dma_get_required_mask (struct device *); /* * WARNING: The legacy I/O space is _architected_. Platforms are @@ -159,6 +160,7 @@ extern void machvec_tlb_migrate_finish (struct mm_struct *); # define platform_dma_sync_sg_for_device ia64_mv.dma_sync_sg_for_device # define platform_dma_mapping_error ia64_mv.dma_mapping_error # define platform_dma_supported ia64_mv.dma_supported +# define platform_dma_get_required_mask ia64_mv.dma_get_required_mask # define platform_irq_to_vector ia64_mv.irq_to_vector # define platform_local_vector_to_irq ia64_mv.local_vector_to_irq # define platform_pci_get_legacy_mem ia64_mv.pci_get_legacy_mem @@ -213,6 +215,7 @@ struct ia64_machine_vector { ia64_mv_dma_sync_sg_for_device *dma_sync_sg_for_device; ia64_mv_dma_mapping_error *dma_mapping_error; ia64_mv_dma_supported *dma_supported; + ia64_mv_dma_get_required_mask *dma_get_required_mask; ia64_mv_irq_to_vector *irq_to_vector; ia64_mv_local_vector_to_irq *local_vector_to_irq; ia64_mv_pci_get_legacy_mem_t *pci_get_legacy_mem; @@ -263,6 +266,7 @@ struct ia64_machine_vector { platform_dma_sync_sg_for_device, \ platform_dma_mapping_error, \ platform_dma_supported, \ + platform_dma_get_required_mask, \ platform_irq_to_vector, \ platform_local_vector_to_irq, \ platform_pci_get_legacy_mem, \ @@ -366,6 +370,9 @@ extern void machvec_init_from_cmdline(const char *cmdline); #ifndef platform_dma_supported # define platform_dma_supported swiotlb_dma_supported #endif +#ifndef platform_dma_get_required_mask +# define platform_dma_get_required_mask ia64_dma_get_required_mask +#endif #ifndef platform_irq_to_vector # define platform_irq_to_vector __ia64_irq_to_vector #endif diff --git a/arch/ia64/include/asm/machvec_init.h b/arch/ia64/include/asm/machvec_init.h index ef964b28684..37a469849ab 100644 --- a/arch/ia64/include/asm/machvec_init.h +++ b/arch/ia64/include/asm/machvec_init.h @@ -3,6 +3,7 @@ extern ia64_mv_send_ipi_t ia64_send_ipi; extern ia64_mv_global_tlb_purge_t ia64_global_tlb_purge; +extern ia64_mv_dma_get_required_mask ia64_dma_get_required_mask; extern ia64_mv_irq_to_vector __ia64_irq_to_vector; extern ia64_mv_local_vector_to_irq __ia64_local_vector_to_irq; extern ia64_mv_pci_get_legacy_mem_t ia64_pci_get_legacy_mem; diff --git a/arch/ia64/include/asm/machvec_sn2.h b/arch/ia64/include/asm/machvec_sn2.h index 781308ea7b8..f1a6e0d6dfa 100644 --- a/arch/ia64/include/asm/machvec_sn2.h +++ b/arch/ia64/include/asm/machvec_sn2.h @@ -67,6 +67,7 @@ extern ia64_mv_dma_sync_single_for_device sn_dma_sync_single_for_device; extern ia64_mv_dma_sync_sg_for_device sn_dma_sync_sg_for_device; extern ia64_mv_dma_mapping_error sn_dma_mapping_error; extern ia64_mv_dma_supported sn_dma_supported; +extern ia64_mv_dma_get_required_mask sn_dma_get_required_mask; extern ia64_mv_migrate_t sn_migrate; extern ia64_mv_kernel_launch_event_t sn_kernel_launch_event; extern ia64_mv_setup_msi_irq_t sn_setup_msi_irq; @@ -123,6 +124,7 @@ extern ia64_mv_pci_fixup_bus_t sn_pci_fixup_bus; #define platform_dma_sync_sg_for_device sn_dma_sync_sg_for_device #define platform_dma_mapping_error sn_dma_mapping_error #define platform_dma_supported sn_dma_supported +#define platform_dma_get_required_mask sn_dma_get_required_mask #define platform_migrate sn_migrate #define platform_kernel_launch_event sn_kernel_launch_event #ifdef CONFIG_PCI_MSI diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c index 211fcfd115f..61f1af5c23c 100644 --- a/arch/ia64/pci/pci.c +++ b/arch/ia64/pci/pci.c @@ -19,6 +19,7 @@ #include <linux/ioport.h> #include <linux/slab.h> #include <linux/spinlock.h> +#include <linux/bootmem.h> #include <asm/machvec.h> #include <asm/page.h> @@ -748,6 +749,32 @@ static void __init set_pci_cacheline_size(void) pci_cache_line_size = (1 << cci.pcci_line_size) / 4; } +u64 ia64_dma_get_required_mask(struct device *dev) +{ + u32 low_totalram = ((max_pfn - 1) << PAGE_SHIFT); + u32 high_totalram = ((max_pfn - 1) >> (32 - PAGE_SHIFT)); + u64 mask; + + if (!high_totalram) { + /* convert to mask just covering totalram */ + low_totalram = (1 << (fls(low_totalram) - 1)); + low_totalram += low_totalram - 1; + mask = low_totalram; + } else { + high_totalram = (1 << (fls(high_totalram) - 1)); + high_totalram += high_totalram - 1; + mask = (((u64)high_totalram) << 32) + 0xffffffff; + } + return mask; +} +EXPORT_SYMBOL_GPL(ia64_dma_get_required_mask); + +u64 dma_get_required_mask(struct device *dev) +{ + return platform_dma_get_required_mask(dev); +} +EXPORT_SYMBOL_GPL(dma_get_required_mask); + static int __init pcibios_init(void) { set_pci_cacheline_size(); diff --git a/arch/ia64/sn/pci/pci_dma.c b/arch/ia64/sn/pci/pci_dma.c index 53ebb648449..863f5017baa 100644 --- a/arch/ia64/sn/pci/pci_dma.c +++ b/arch/ia64/sn/pci/pci_dma.c @@ -356,6 +356,12 @@ int sn_dma_mapping_error(struct device *dev, dma_addr_t dma_addr) } EXPORT_SYMBOL(sn_dma_mapping_error); +u64 sn_dma_get_required_mask(struct device *dev) +{ + return DMA_64BIT_MASK; +} +EXPORT_SYMBOL_GPL(sn_dma_get_required_mask); + char *sn_pci_get_legacy_mem(struct pci_bus *bus) { if (!SN_PCIBUS_BUSSOFT(bus)) |