diff options
Diffstat (limited to 'arch/mips/include/asm/mach-powertv')
| -rw-r--r-- | arch/mips/include/asm/mach-powertv/asic.h | 21 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-powertv/asic_reg_map.h | 2 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-powertv/asic_regs.h | 5 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-powertv/dma-coherence.h | 8 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-powertv/ioremap.h | 165 |
5 files changed, 147 insertions, 54 deletions
diff --git a/arch/mips/include/asm/mach-powertv/asic.h b/arch/mips/include/asm/mach-powertv/asic.h index bcad43a93eb..c7077a64b9a 100644 --- a/arch/mips/include/asm/mach-powertv/asic.h +++ b/arch/mips/include/asm/mach-powertv/asic.h @@ -20,6 +20,7 @@ #define _ASM_MACH_POWERTV_ASIC_H #include <linux/ioport.h> +#include <linux/platform_device.h> #include <asm/mach-powertv/asic_regs.h> #define DVR_CAPABLE (1<<0) @@ -40,19 +41,23 @@ enum family_type { FAMILY_8600VZB, FAMILY_1500VZE, FAMILY_1500VZF, + FAMILY_8700, FAMILIES }; /* Register maps for each ASIC */ extern const struct register_map calliope_register_map; extern const struct register_map cronus_register_map; +extern const struct register_map gaia_register_map; extern const struct register_map zeus_register_map; extern struct resource dvr_cronus_resources[]; +extern struct resource dvr_gaia_resources[]; extern struct resource dvr_zeus_resources[]; extern struct resource non_dvr_calliope_resources[]; extern struct resource non_dvr_cronus_resources[]; extern struct resource non_dvr_cronuslite_resources[]; +extern struct resource non_dvr_gaia_resources[]; extern struct resource non_dvr_vz_calliope_resources[]; extern struct resource non_dvr_vze_calliope_resources[]; extern struct resource non_dvr_vzf_calliope_resources[]; @@ -67,16 +72,24 @@ extern int platform_supports_ffs(void); extern int platform_supports_pcie(void); extern int platform_supports_display(void); extern void configure_platform(void); -extern void platform_configure_usb_ehci(void); -extern void platform_unconfigure_usb_ehci(void); -extern void platform_configure_usb_ohci(void); -extern void platform_unconfigure_usb_ohci(void); /* Platform Resources */ #define ASIC_RESOURCE_GET_EXISTS 1 extern struct resource *asic_resource_get(const char *name); extern void platform_release_memory(void *baddr, int size); +/* USB configuration */ +struct usb_hcd; /* Forward reference */ +extern void platform_configure_usb_ehci(void); +extern void platform_unconfigure_usb_ehci(void); +extern void platform_configure_usb_ohci(void); +extern void platform_unconfigure_usb_ohci(void); + +/* Resource for ASIC registers */ +extern struct resource asic_resource; +extern int platform_usb_devices_init(struct platform_device **echi_dev, + struct platform_device **ohci_dev); + /* Reboot Cause */ extern void set_reboot_cause(char code, unsigned int data, unsigned int data2); extern void set_locked_reboot_cause(char code, unsigned int data, diff --git a/arch/mips/include/asm/mach-powertv/asic_reg_map.h b/arch/mips/include/asm/mach-powertv/asic_reg_map.h index 6f26cb09828..20348e817b0 100644 --- a/arch/mips/include/asm/mach-powertv/asic_reg_map.h +++ b/arch/mips/include/asm/mach-powertv/asic_reg_map.h @@ -64,7 +64,7 @@ REGISTER_MAP_ELEMENT(int_level_0_1) REGISTER_MAP_ELEMENT(int_level_0_0) REGISTER_MAP_ELEMENT(int_docsis_en) REGISTER_MAP_ELEMENT(mips_pll_setup) -REGISTER_MAP_ELEMENT(usb_fs) +REGISTER_MAP_ELEMENT(fs432x4b4_usb_ctl) REGISTER_MAP_ELEMENT(test_bus) REGISTER_MAP_ELEMENT(crt_spare) REGISTER_MAP_ELEMENT(usb2_ohci_int_mask) diff --git a/arch/mips/include/asm/mach-powertv/asic_regs.h b/arch/mips/include/asm/mach-powertv/asic_regs.h index 1e11236c6db..deecb26a077 100644 --- a/arch/mips/include/asm/mach-powertv/asic_regs.h +++ b/arch/mips/include/asm/mach-powertv/asic_regs.h @@ -27,7 +27,8 @@ enum asic_type { ASIC_CALLIOPE, ASIC_CRONUS, ASIC_CRONUSLITE, - ASICS + ASIC_GAIA, + ASICS /* Number of supported ASICs */ }; /* hardcoded values read from Chip Version registers */ @@ -37,6 +38,7 @@ enum asic_type { #define NAND_FLASH_BASE 0x03000000 #define CALLIOPE_IO_BASE 0x08000000 +#define GAIA_IO_BASE 0x09000000 #define CRONUS_IO_BASE 0x09000000 #define ZEUS_IO_BASE 0x09000000 @@ -99,6 +101,7 @@ static inline void register_map_virtualize(struct register_map *map) } extern struct register_map _asic_register_map; +extern unsigned long asic_phy_base; /* * Macros to interface to registers through their ioremapped address diff --git a/arch/mips/include/asm/mach-powertv/dma-coherence.h b/arch/mips/include/asm/mach-powertv/dma-coherence.h index 5b8d5ebeb83..f76029c2406 100644 --- a/arch/mips/include/asm/mach-powertv/dma-coherence.h +++ b/arch/mips/include/asm/mach-powertv/dma-coherence.h @@ -65,21 +65,21 @@ static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size) { if (is_kseg2(addr)) - return phys_to_bus(virt_to_phys_from_pte(addr)); + return phys_to_dma(virt_to_phys_from_pte(addr)); else - return phys_to_bus(virt_to_phys(addr)); + return phys_to_dma(virt_to_phys(addr)); } static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page) { - return phys_to_bus(page_to_phys(page)); + return phys_to_dma(page_to_phys(page)); } static inline unsigned long plat_dma_addr_to_phys(struct device *dev, dma_addr_t dma_addr) { - return bus_to_phys(dma_addr); + return dma_to_phys(dma_addr); } static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr, diff --git a/arch/mips/include/asm/mach-powertv/ioremap.h b/arch/mips/include/asm/mach-powertv/ioremap.h index e6276d5146e..076f2eeaa57 100644 --- a/arch/mips/include/asm/mach-powertv/ioremap.h +++ b/arch/mips/include/asm/mach-powertv/ioremap.h @@ -10,64 +10,101 @@ #define __ASM_MACH_POWERTV_IOREMAP_H #include <linux/types.h> +#include <linux/log2.h> +#include <linux/compiler.h> -#define LOW_MEM_BOUNDARY_PHYS 0x20000000 -#define LOW_MEM_BOUNDARY_MASK (~(LOW_MEM_BOUNDARY_PHYS - 1)) +#include <asm/pgtable-bits.h> +#include <asm/addrspace.h> + +/* We're going to mess with bits, so get sizes */ +#define IOR_BPC 8 /* Bits per char */ +#define IOR_PHYS_BITS (IOR_BPC * sizeof(phys_addr_t)) +#define IOR_DMA_BITS (IOR_BPC * sizeof(dma_addr_t)) /* - * The bus addresses are different than the physical addresses that - * the processor sees by an offset. This offset varies by ASIC - * version. Define a variable to hold the offset and some macros to - * make the conversion simpler. */ -extern unsigned long phys_to_bus_offset; - -#ifdef CONFIG_HIGHMEM -#define MEM_GAP_PHYS 0x60000000 + * Define the granularity of physical/DMA mapping in terms of the number + * of bits that defines the offset within a grain. These will be the + * least significant bits of the address. The rest of a physical or DMA + * address will be used to index into an appropriate table to find the + * offset to add to the address to yield the corresponding DMA or physical + * address, respectively. + */ +#define IOR_LSBITS 22 /* Bits in a grain */ + /* - * TODO: We will use the hard code for conversion between physical and - * bus until the bootloader releases their device tree to us. + * Compute the number of most significant address bits after removing those + * used for the offset within a grain and then compute the number of table + * entries for the conversion. */ -#define phys_to_bus(x) (((x) < LOW_MEM_BOUNDARY_PHYS) ? \ - ((x) + phys_to_bus_offset) : (x)) -#define bus_to_phys(x) (((x) < MEM_GAP_PHYS_ADDR) ? \ - ((x) - phys_to_bus_offset) : (x)) -#else -#define phys_to_bus(x) ((x) + phys_to_bus_offset) -#define bus_to_phys(x) ((x) - phys_to_bus_offset) -#endif +#define IOR_PHYS_MSBITS (IOR_PHYS_BITS - IOR_LSBITS) +#define IOR_NUM_PHYS_TO_DMA ((phys_addr_t) 1 << IOR_PHYS_MSBITS) + +#define IOR_DMA_MSBITS (IOR_DMA_BITS - IOR_LSBITS) +#define IOR_NUM_DMA_TO_PHYS ((dma_addr_t) 1 << IOR_DMA_MSBITS) /* - * Determine whether the address we are given is for an ASIC device - * Params: addr Address to check - * Returns: Zero if the address is not for ASIC devices, non-zero - * if it is. + * Define data structures used as elements in the arrays for the conversion + * between physical and DMA addresses. We do some slightly fancy math to + * compute the width of the offset element of the conversion tables so + * that we can have the smallest conversion tables. Next, round up the + * sizes to the next higher power of two, i.e. the offset element will have + * 8, 16, 32, 64, etc. bits. This eliminates the need to mask off any + * bits. Finally, we compute a shift value that puts the most significant + * bits of the offset into the most significant bits of the offset element. + * This makes it more efficient on processors without barrel shifters and + * easier to see the values if the conversion table is dumped in binary. */ -static inline int asic_is_device_addr(phys_t addr) +#define _IOR_OFFSET_WIDTH(n) (1 << order_base_2(n)) +#define IOR_OFFSET_WIDTH(n) \ + (_IOR_OFFSET_WIDTH(n) < 8 ? 8 : _IOR_OFFSET_WIDTH(n)) + +#define IOR_PHYS_OFFSET_BITS IOR_OFFSET_WIDTH(IOR_PHYS_MSBITS) +#define IOR_PHYS_SHIFT (IOR_PHYS_BITS - IOR_PHYS_OFFSET_BITS) + +#define IOR_DMA_OFFSET_BITS IOR_OFFSET_WIDTH(IOR_DMA_MSBITS) +#define IOR_DMA_SHIFT (IOR_DMA_BITS - IOR_DMA_OFFSET_BITS) + +struct ior_phys_to_dma { + dma_addr_t offset:IOR_DMA_OFFSET_BITS __packed + __aligned((IOR_DMA_OFFSET_BITS / IOR_BPC)); +}; + +struct ior_dma_to_phys { + dma_addr_t offset:IOR_PHYS_OFFSET_BITS __packed + __aligned((IOR_PHYS_OFFSET_BITS / IOR_BPC)); +}; + +extern struct ior_phys_to_dma _ior_phys_to_dma[IOR_NUM_PHYS_TO_DMA]; +extern struct ior_dma_to_phys _ior_dma_to_phys[IOR_NUM_DMA_TO_PHYS]; + +static inline dma_addr_t _phys_to_dma_offset_raw(phys_addr_t phys) { - return !((phys_t)addr & (phys_t) LOW_MEM_BOUNDARY_MASK); + return (dma_addr_t)_ior_phys_to_dma[phys >> IOR_LSBITS].offset; } -/* - * Determine whether the address we are given is external RAM mappable - * into KSEG1. - * Params: addr Address to check - * Returns: Zero if the address is not for external RAM and - */ -static inline int asic_is_lowmem_ram_addr(phys_t addr) +static inline dma_addr_t _dma_to_phys_offset_raw(dma_addr_t dma) { - /* - * The RAM always starts at the following address in the processor's - * physical address space - */ - static const phys_t phys_ram_base = 0x10000000; - phys_t bus_ram_base; + return (dma_addr_t)_ior_dma_to_phys[dma >> IOR_LSBITS].offset; +} - bus_ram_base = phys_to_bus_offset + phys_ram_base; +/* These are not portable and should not be used in drivers. Drivers should + * be using ioremap() and friends to map physical addreses to virtual + * addresses and dma_map*() and friends to map virtual addresses into DMA + * addresses and back. + */ +static inline dma_addr_t phys_to_dma(phys_addr_t phys) +{ + return phys + (_phys_to_dma_offset_raw(phys) << IOR_PHYS_SHIFT); +} - return addr >= bus_ram_base && - addr < (bus_ram_base + (LOW_MEM_BOUNDARY_PHYS - phys_ram_base)); +static inline phys_addr_t dma_to_phys(dma_addr_t dma) +{ + return dma + (_dma_to_phys_offset_raw(dma) << IOR_DMA_SHIFT); } +extern void ioremap_add_map(dma_addr_t phys, phys_addr_t alias, + dma_addr_t size); + /* * Allow physical addresses to be fixed up to help peripherals located * outside the low 32-bit range -- generic pass-through version. @@ -77,10 +114,50 @@ static inline phys_t fixup_bigphys_addr(phys_t phys_addr, phys_t size) return phys_addr; } -static inline void __iomem *plat_ioremap(phys_t offset, unsigned long size, +/* + * Handle the special case of addresses the area aliased into the first + * 512 MiB of the processor's physical address space. These turn into either + * kseg0 or kseg1 addresses, depending on flags. + */ +static inline void __iomem *plat_ioremap(phys_t start, unsigned long size, unsigned long flags) { - return NULL; + phys_addr_t start_offset; + void __iomem *result = NULL; + + /* Start by checking to see whether this is an aliased address */ + start_offset = _dma_to_phys_offset_raw(start); + + /* + * If: + * o the memory is aliased into the first 512 MiB, and + * o the start and end are in the same RAM bank, and + * o we don't have a zero size or wrap around, and + * o we are supposed to create an uncached mapping, + * handle this is a kseg0 or kseg1 address + */ + if (start_offset != 0) { + phys_addr_t last; + dma_addr_t dma_to_phys_offset; + + last = start + size - 1; + dma_to_phys_offset = + _dma_to_phys_offset_raw(last) << IOR_DMA_SHIFT; + + if (dma_to_phys_offset == start_offset && + size != 0 && start <= last) { + phys_t adjusted_start; + adjusted_start = start + start_offset; + if (flags == _CACHE_UNCACHED) + result = (void __iomem *) (unsigned long) + CKSEG1ADDR(adjusted_start); + else + result = (void __iomem *) (unsigned long) + CKSEG0ADDR(adjusted_start); + } + } + + return result; } static inline int plat_iounmap(const volatile void __iomem *addr) |