diff options
| -rw-r--r-- | include/asm-cris/dma-mapping.h | 170 | ||||
| -rw-r--r-- | include/asm-cris/dma.h | 8 | ||||
| -rw-r--r-- | include/asm-cris/io.h | 103 | ||||
| -rw-r--r-- | include/asm-cris/pci.h | 102 |
4 files changed, 298 insertions, 85 deletions
diff --git a/include/asm-cris/dma-mapping.h b/include/asm-cris/dma-mapping.h index 0d770f60127..0b5c3fdaefe 100644 --- a/include/asm-cris/dma-mapping.h +++ b/include/asm-cris/dma-mapping.h @@ -1,125 +1,179 @@ +/* DMA mapping. Nothing tricky here, just virt_to_phys */ + #ifndef _ASM_CRIS_DMA_MAPPING_H #define _ASM_CRIS_DMA_MAPPING_H -#include "scatterlist.h" +#include <linux/mm.h> +#include <linux/kernel.h> -static inline int -dma_supported(struct device *dev, u64 mask) -{ - BUG(); - return 0; -} +#include <asm/cache.h> +#include <asm/io.h> +#include <asm/scatterlist.h> -static inline int -dma_set_mask(struct device *dev, u64 dma_mask) -{ - BUG(); - return 1; -} +#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) +#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) + +#ifdef CONFIG_PCI +void *dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, int flag); +void dma_free_coherent(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_handle); +#else static inline void * dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, - int flag) + int flag) { - BUG(); - return NULL; + BUG(); + return NULL; } static inline void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, - dma_addr_t dma_handle) + dma_addr_t dma_handle) { - BUG(); + BUG(); } - +#endif static inline dma_addr_t -dma_map_single(struct device *dev, void *cpu_addr, size_t size, +dma_map_single(struct device *dev, void *ptr, size_t size, enum dma_data_direction direction) { - BUG(); - return 0; + BUG_ON(direction == DMA_NONE); + return virt_to_phys(ptr); } static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction direction) { - BUG(); + BUG_ON(direction == DMA_NONE); +} + +static inline int +dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction direction) +{ + printk("Map sg\n"); + return nents; } static inline dma_addr_t -dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction direction) +dma_map_page(struct device *dev, struct page *page, unsigned long offset, + size_t size, enum dma_data_direction direction) { - BUG(); - return 0; + BUG_ON(direction == DMA_NONE); + return page_to_phys(page) + offset; } static inline void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, enum dma_data_direction direction) { - BUG(); + BUG_ON(direction == DMA_NONE); } -static inline int -dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction direction) -{ - BUG(); - return 1; -} static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, enum dma_data_direction direction) { - BUG(); + BUG_ON(direction == DMA_NONE); } static inline void -dma_sync_single(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) +dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) { - BUG(); } static inline void -dma_sync_sg(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) +dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) { - BUG(); } -/* Now for the API extensions over the pci_ one */ +static inline void +dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle, + unsigned long offset, size_t size, + enum dma_data_direction direction) +{ +} -#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) -#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) -#define dma_is_consistent(d) (1) +static inline void +dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, + unsigned long offset, size_t size, + enum dma_data_direction direction) +{ +} -static inline int -dma_get_cache_alignment(void) +static inline void +dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, + enum dma_data_direction direction) { - /* no easy way to get cache size on all processors, so return - * the maximum possible, to be safe */ - return (1 << L1_CACHE_SHIFT_MAX); } static inline void -dma_sync_single_range(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) +dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, + enum dma_data_direction direction) { - BUG(); } +static inline int +dma_mapping_error(dma_addr_t dma_addr) +{ + return 0; +} + +static inline int +dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, + * so we can't guarantee allocations that must be + * within a tighter range than GFP_DMA.. + */ + if(mask < 0x00ffffff) + return 0; + + return 1; +} + +static inline int +dma_set_mask(struct device *dev, u64 mask) +{ + if(!dev->dma_mask || !dma_supported(dev, mask)) + return -EIO; + + *dev->dma_mask = mask; + + return 0; +} + +static inline int +dma_get_cache_alignment(void) +{ + return (1 << L1_CACHE_SHIFT_MAX); +} + +#define dma_is_consistent(d) (1) + static inline void dma_cache_sync(void *vaddr, size_t size, enum dma_data_direction direction) { - BUG(); } -#endif +#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY +extern int +dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr, + dma_addr_t device_addr, size_t size, int flags); + +extern void +dma_release_declared_memory(struct device *dev); +extern void * +dma_mark_declared_memory_occupied(struct device *dev, + dma_addr_t device_addr, size_t size); + +#endif diff --git a/include/asm-cris/dma.h b/include/asm-cris/dma.h index c229fac35cd..6f188dc5613 100644 --- a/include/asm-cris/dma.h +++ b/include/asm-cris/dma.h @@ -10,4 +10,12 @@ #define MAX_DMA_ADDRESS PAGE_OFFSET +/* From PCI */ + +#ifdef CONFIG_PCI +extern int isa_dma_bridge_buggy; +#else +#define isa_dma_bridge_buggy (0) +#endif + #endif /* _ASM_DMA_H */ diff --git a/include/asm-cris/io.h b/include/asm-cris/io.h index 1d2b51701e8..16e791b3c72 100644 --- a/include/asm-cris/io.h +++ b/include/asm-cris/io.h @@ -3,6 +3,21 @@ #include <asm/page.h> /* for __va, __pa */ #include <asm/arch/io.h> +#include <linux/kernel.h> + +struct cris_io_operations +{ + u32 (*read_mem)(void *addr, int size); + void (*write_mem)(u32 val, int size, void *addr); + u32 (*read_io)(u32 port, void *addr, int size, int count); + void (*write_io)(u32 port, void *addr, int size, int count); +}; + +#ifdef CONFIG_PCI +extern struct cris_io_operations *cris_iops; +#else +#define cris_iops ((struct cris_io_operations*)NULL) +#endif /* * Change virtual addresses to physical addresses and vv. @@ -18,14 +33,17 @@ extern inline void * phys_to_virt(unsigned long address) return __va(address); } -extern void * __ioremap(unsigned long offset, unsigned long size, unsigned long flags); +extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags); +extern void __iomem * __ioremap_prot(unsigned long phys_addr, unsigned long size, pgprot_t prot); -extern inline void * ioremap (unsigned long offset, unsigned long size) +extern inline void __iomem * ioremap (unsigned long offset, unsigned long size) { return __ioremap(offset, size, 0); } -extern void iounmap(void *addr); +extern void iounmap(volatile void * __iomem addr); + +extern void __iomem * ioremap_nocache(unsigned long offset, unsigned long size); /* * IO bus memory addresses are also 1:1 with the physical address @@ -39,9 +57,32 @@ extern void iounmap(void *addr); * differently. On the CRIS architecture, we just read/write the * memory location directly. */ -#define readb(addr) (*(volatile unsigned char *) (addr)) -#define readw(addr) (*(volatile unsigned short *) (addr)) -#define readl(addr) (*(volatile unsigned int *) (addr)) +#ifdef CONFIG_PCI +#define PCI_SPACE(x) ((((unsigned)(x)) & 0x10000000) == 0x10000000) +#else +#define PCI_SPACE(x) 0 +#endif +static inline unsigned char readb(const volatile void __iomem *addr) +{ + if (PCI_SPACE(addr) && cris_iops) + return cris_iops->read_mem((void*)addr, 1); + else + return *(volatile unsigned char __force *) addr; +} +static inline unsigned short readw(const volatile void __iomem *addr) +{ + if (PCI_SPACE(addr) && cris_iops) + return cris_iops->read_mem((void*)addr, 2); + else + return *(volatile unsigned short __force *) addr; +} +static inline unsigned int readl(const volatile void __iomem *addr) +{ + if (PCI_SPACE(addr) && cris_iops) + return cris_iops->read_mem((void*)addr, 4); + else + return *(volatile unsigned int __force *) addr; +} #define readb_relaxed(addr) readb(addr) #define readw_relaxed(addr) readw(addr) #define readl_relaxed(addr) readl(addr) @@ -49,9 +90,27 @@ extern void iounmap(void *addr); #define __raw_readw readw #define __raw_readl readl -#define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b)) -#define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b)) -#define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b)) +static inline void writeb(unsigned char b, volatile void __iomem *addr) +{ + if (PCI_SPACE(addr) && cris_iops) + cris_iops->write_mem(b, 1, (void*)addr); + else + *(volatile unsigned char __force *) addr = b; +} +static inline void writew(unsigned short b, volatile void __iomem *addr) +{ + if (PCI_SPACE(addr) && cris_iops) + cris_iops->write_mem(b, 2, (void*)addr); + else + *(volatile unsigned short __force *) addr = b; +} +static inline void writel(unsigned int b, volatile void __iomem *addr) +{ + if (PCI_SPACE(addr) && cris_iops) + cris_iops->write_mem(b, 4, (void*)addr); + else + *(volatile unsigned int __force *) addr = b; +} #define __raw_writeb writeb #define __raw_writew writew #define __raw_writel writel @@ -66,25 +125,25 @@ extern void iounmap(void *addr); * Again, CRIS does not require mem IO specific function. */ -#define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void *)(b),(c),(d)) +#define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void __force *)(b),(c),(d)) /* The following is junk needed for the arch-independent code but which * we never use in the CRIS port */ #define IO_SPACE_LIMIT 0xffff -#define inb(x) (0) -#define inw(x) (0) -#define inl(x) (0) -#define outb(x,y) -#define outw(x,y) -#define outl(x,y) -#define insb(x,y,z) -#define insw(x,y,z) -#define insl(x,y,z) -#define outsb(x,y,z) -#define outsw(x,y,z) -#define outsl(x,y,z) +#define inb(port) (cris_iops ? cris_iops->read_io(port,NULL,1,1) : 0) +#define inw(port) (cris_iops ? cris_iops->read_io(port,NULL,2,1) : 0) +#define inl(port) (cris_iops ? cris_iops->read_io(port,NULL,4,1) : 0) +#define insb(port,addr,count) (cris_iops ? cris_iops->read_io(port,addr,1,count) : 0) +#define insw(port,addr,count) (cris_iops ? cris_iops->read_io(port,addr,2,count) : 0) +#define insl(port,addr,count) (cris_iops ? cris_iops->read_io(port,addr,4,count) : 0) +#define outb(data,port) if (cris_iops) cris_iops->write_io(port,(void*)(unsigned)data,1,1) +#define outw(data,port) if (cris_iops) cris_iops->write_io(port,(void*)(unsigned)data,2,1) +#define outl(data,port) if (cris_iops) cris_iops->write_io(port,(void*)(unsigned)data,4,1) +#define outsb(port,addr,count) if(cris_iops) cris_iops->write_io(port,(void*)addr,1,count) +#define outsw(port,addr,count) if(cris_iops) cris_iops->write_io(port,(void*)addr,2,count) +#define outsl(port,addr,count) if(cris_iops) cris_iops->write_io(port,(void*)addr,3,count) /* * Convert a physical pointer to a virtual kernel pointer for /dev/mem diff --git a/include/asm-cris/pci.h b/include/asm-cris/pci.h index c6104153188..2064bc1de07 100644 --- a/include/asm-cris/pci.h +++ b/include/asm-cris/pci.h @@ -1,13 +1,105 @@ #ifndef __ASM_CRIS_PCI_H #define __ASM_CRIS_PCI_H +#include <linux/config.h> + +#ifdef __KERNEL__ +#include <linux/mm.h> /* for struct page */ + +/* Can be used to override the logic in pci_scan_bus for skipping + already-configured bus numbers - to be used for buggy BIOSes + or architectures with incomplete PCI setup by the loader */ + +#define pcibios_assign_all_busses(void) 1 + +extern unsigned long pci_mem_start; +#define PCIBIOS_MIN_IO 0x1000 +#define PCIBIOS_MIN_MEM 0x10000000 + +#define PCIBIOS_MIN_CARDBUS_IO 0x4000 + +void pcibios_config_init(void); +struct pci_bus * pcibios_scan_root(int bus); +int pcibios_assign_resources(void); + +void pcibios_set_master(struct pci_dev *dev); +void pcibios_penalize_isa_irq(int irq); +struct irq_routing_table *pcibios_get_irq_routing_table(void); +int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); + +/* Dynamic DMA mapping stuff. + * i386 has everything mapped statically. + */ + +#include <linux/types.h> +#include <linux/slab.h> #include <asm/scatterlist.h> -#include <asm-generic/pci-dma-compat.h> +#include <linux/string.h> +#include <asm/io.h> -/* ETRAX chips don't have a PCI bus. This file is just here because some stupid .c code - * includes it even if CONFIG_PCI is not set. +struct pci_dev; + +/* The PCI address space does equal the physical memory + * address space. The networking and block device layers use + * this boolean for bounce buffer decisions. */ -#define PCI_DMA_BUS_IS_PHYS (1) +#define PCI_DMA_BUS_IS_PHYS (1) -#endif /* __ASM_CRIS_PCI_H */ +/* pci_unmap_{page,single} is a nop so... */ +#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) +#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) +#define pci_unmap_addr(PTR, ADDR_NAME) (0) +#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) +#define pci_unmap_len(PTR, LEN_NAME) (0) +#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) + +/* This is always fine. */ +#define pci_dac_dma_supported(pci_dev, mask) (1) +static inline dma64_addr_t +pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction) +{ + return ((dma64_addr_t) page_to_phys(page) + + (dma64_addr_t) offset); +} + +static inline struct page * +pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr) +{ + return pfn_to_page(dma_addr >> PAGE_SHIFT); +} + +static inline unsigned long +pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr) +{ + return (dma_addr & ~PAGE_MASK); +} + +static inline void +pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction) +{ +} + +static inline void +pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction) +{ +} + +#define HAVE_PCI_MMAP +extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, + enum pci_mmap_state mmap_state, int write_combine); + + +static inline void pcibios_add_platform_entries(struct pci_dev *dev) +{ +} + +#endif /* __KERNEL__ */ + +/* implement the pci_ DMA API in terms of the generic device dma_ one */ +#include <asm-generic/pci-dma-compat.h> + +/* generic pci stuff */ +#include <asm-generic/pci.h> + +#endif /* __ASM_CRIS_PCI_H */ |