diff options
Diffstat (limited to 'arch/mips/powertv/asic/asic_devices.c')
| -rw-r--r-- | arch/mips/powertv/asic/asic_devices.c | 549 |
1 files changed, 0 insertions, 549 deletions
diff --git a/arch/mips/powertv/asic/asic_devices.c b/arch/mips/powertv/asic/asic_devices.c deleted file mode 100644 index 8380605d597..00000000000 --- a/arch/mips/powertv/asic/asic_devices.c +++ /dev/null @@ -1,549 +0,0 @@ -/* - * - * Description: Defines the platform resources for Gaia-based settops. - * - * Copyright (C) 2005-2009 Scientific-Atlanta, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - * NOTE: The bootloader allocates persistent memory at an address which is - * 16 MiB below the end of the highest address in KSEG0. All fixed - * address memory reservations must avoid this region. - */ - -#include <linux/device.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/resource.h> -#include <linux/serial_reg.h> -#include <linux/io.h> -#include <linux/bootmem.h> -#include <linux/mm.h> -#include <linux/platform_device.h> -#include <linux/module.h> -#include <asm/page.h> -#include <linux/swap.h> -#include <linux/highmem.h> -#include <linux/dma-mapping.h> - -#include <asm/mach-powertv/asic.h> -#include <asm/mach-powertv/asic_regs.h> -#include <asm/mach-powertv/interrupts.h> - -#ifdef CONFIG_BOOTLOADER_DRIVER -#include <asm/mach-powertv/kbldr.h> -#endif -#include <asm/bootinfo.h> - -#define BOOTLDRFAMILY(byte1, byte0) (((byte1) << 8) | (byte0)) - -/* - * Forward Prototypes - */ -static void pmem_setup_resource(void); - -/* - * Global Variables - */ -enum asic_type asic; - -unsigned int platform_features; -unsigned int platform_family; -struct register_map _asic_register_map; -EXPORT_SYMBOL(_asic_register_map); /* Exported for testing */ -unsigned long asic_phy_base; -unsigned long asic_base; -EXPORT_SYMBOL(asic_base); /* Exported for testing */ -struct resource *gp_resources; - -/* - * Don't recommend to use it directly, it is usually used by kernel internally. - * Portable code should be using interfaces such as ioremp, dma_map_single, etc. - */ -unsigned long phys_to_dma_offset; -EXPORT_SYMBOL(phys_to_dma_offset); - -/* - * - * IO Resource Definition - * - */ - -struct resource asic_resource = { - .name = "ASIC Resource", - .start = 0, - .end = ASIC_IO_SIZE, - .flags = IORESOURCE_MEM, -}; - -/* - * Allow override of bootloader-specified model - * Returns zero on success, a negative errno value on failure. This parameter - * allows overriding of the bootloader-specified model. - */ -static char __initdata cmdline[COMMAND_LINE_SIZE]; - -#define FORCEFAMILY_PARAM "forcefamily" - -/* - * check_forcefamily - check for, and parse, forcefamily command line parameter - * @forced_family: Pointer to two-character array in which to store the - * value of the forcedfamily parameter, if any. - */ -static __init int check_forcefamily(unsigned char forced_family[2]) -{ - const char *p; - - forced_family[0] = '\0'; - forced_family[1] = '\0'; - - /* Check the command line for a forcefamily directive */ - strncpy(cmdline, arcs_cmdline, COMMAND_LINE_SIZE - 1); - p = strstr(cmdline, FORCEFAMILY_PARAM); - if (p && (p != cmdline) && (*(p - 1) != ' ')) - p = strstr(p, " " FORCEFAMILY_PARAM "="); - - if (p) { - p += strlen(FORCEFAMILY_PARAM "="); - - if (*p == '\0' || *(p + 1) == '\0' || - (*(p + 2) != '\0' && *(p + 2) != ' ')) - pr_err(FORCEFAMILY_PARAM " must be exactly two " - "characters long, ignoring value\n"); - - else { - forced_family[0] = *p; - forced_family[1] = *(p + 1); - } - } - - return 0; -} - -/* - * platform_set_family - determine major platform family type. - * - * Returns family type; -1 if none - * Returns the family type; -1 if none - * - */ -static __init noinline void platform_set_family(void) -{ - unsigned char forced_family[2]; - unsigned short bootldr_family; - - if (check_forcefamily(forced_family) == 0) - bootldr_family = BOOTLDRFAMILY(forced_family[0], - forced_family[1]); - else - bootldr_family = (unsigned short) BOOTLDRFAMILY( - CONFIG_BOOTLOADER_FAMILY[0], - CONFIG_BOOTLOADER_FAMILY[1]); - - pr_info("Bootloader Family = 0x%04X\n", bootldr_family); - - switch (bootldr_family) { - case BOOTLDRFAMILY('R', '1'): - platform_family = FAMILY_1500; - break; - case BOOTLDRFAMILY('4', '4'): - platform_family = FAMILY_4500; - break; - case BOOTLDRFAMILY('4', '6'): - platform_family = FAMILY_4600; - break; - case BOOTLDRFAMILY('A', '1'): - platform_family = FAMILY_4600VZA; - break; - case BOOTLDRFAMILY('8', '5'): - platform_family = FAMILY_8500; - break; - case BOOTLDRFAMILY('R', '2'): - platform_family = FAMILY_8500RNG; - break; - case BOOTLDRFAMILY('8', '6'): - platform_family = FAMILY_8600; - break; - case BOOTLDRFAMILY('B', '1'): - platform_family = FAMILY_8600VZB; - break; - case BOOTLDRFAMILY('E', '1'): - platform_family = FAMILY_1500VZE; - break; - case BOOTLDRFAMILY('F', '1'): - platform_family = FAMILY_1500VZF; - break; - case BOOTLDRFAMILY('8', '7'): - platform_family = FAMILY_8700; - break; - default: - platform_family = -1; - } -} - -unsigned int platform_get_family(void) -{ - return platform_family; -} -EXPORT_SYMBOL(platform_get_family); - -/* - * platform_get_asic - determine the ASIC type. - * - * Returns the ASIC type, or ASIC_UNKNOWN if unknown - * - */ -enum asic_type platform_get_asic(void) -{ - return asic; -} -EXPORT_SYMBOL(platform_get_asic); - -/* - * set_register_map - set ASIC register configuration - * @phys_base: Physical address of the base of the ASIC registers - * @map: Description of key ASIC registers - */ -static void __init set_register_map(unsigned long phys_base, - const struct register_map *map) -{ - asic_phy_base = phys_base; - _asic_register_map = *map; - register_map_virtualize(&_asic_register_map); - asic_base = (unsigned long)ioremap_nocache(phys_base, ASIC_IO_SIZE); -} - -/** - * configure_platform - configuration based on platform type. - */ -void __init configure_platform(void) -{ - platform_set_family(); - - switch (platform_family) { - case FAMILY_1500: - case FAMILY_1500VZE: - case FAMILY_1500VZF: - platform_features = FFS_CAPABLE; - asic = ASIC_CALLIOPE; - set_register_map(CALLIOPE_IO_BASE, &calliope_register_map); - - if (platform_family == FAMILY_1500VZE) { - gp_resources = non_dvr_vze_calliope_resources; - pr_info("Platform: 1500/Vz Class E - " - "CALLIOPE, NON_DVR_CAPABLE\n"); - } else if (platform_family == FAMILY_1500VZF) { - gp_resources = non_dvr_vzf_calliope_resources; - pr_info("Platform: 1500/Vz Class F - " - "CALLIOPE, NON_DVR_CAPABLE\n"); - } else { - gp_resources = non_dvr_calliope_resources; - pr_info("Platform: 1500/RNG100 - CALLIOPE, " - "NON_DVR_CAPABLE\n"); - } - break; - - case FAMILY_4500: - platform_features = FFS_CAPABLE | PCIE_CAPABLE | - DISPLAY_CAPABLE; - asic = ASIC_ZEUS; - set_register_map(ZEUS_IO_BASE, &zeus_register_map); - gp_resources = non_dvr_zeus_resources; - - pr_info("Platform: 4500 - ZEUS, NON_DVR_CAPABLE\n"); - break; - - case FAMILY_4600: - { - unsigned int chipversion = 0; - - /* The settop has PCIE but it isn't used, so don't advertise - * it*/ - platform_features = FFS_CAPABLE | DISPLAY_CAPABLE; - - /* Cronus and Cronus Lite have the same register map */ - set_register_map(CRONUS_IO_BASE, &cronus_register_map); - - /* ASIC version will determine if this is a real CronusLite or - * Castrati(Cronus) */ - chipversion = asic_read(chipver3) << 24; - chipversion |= asic_read(chipver2) << 16; - chipversion |= asic_read(chipver1) << 8; - chipversion |= asic_read(chipver0); - - if ((chipversion == CRONUS_10) || (chipversion == CRONUS_11)) - asic = ASIC_CRONUS; - else - asic = ASIC_CRONUSLITE; - - gp_resources = non_dvr_cronuslite_resources; - pr_info("Platform: 4600 - %s, NON_DVR_CAPABLE, " - "chipversion=0x%08X\n", - (asic == ASIC_CRONUS) ? "CRONUS" : "CRONUS LITE", - chipversion); - break; - } - case FAMILY_4600VZA: - platform_features = FFS_CAPABLE | DISPLAY_CAPABLE; - asic = ASIC_CRONUS; - set_register_map(CRONUS_IO_BASE, &cronus_register_map); - gp_resources = non_dvr_cronus_resources; - - pr_info("Platform: Vz Class A - CRONUS, NON_DVR_CAPABLE\n"); - break; - - case FAMILY_8500: - case FAMILY_8500RNG: - platform_features = DVR_CAPABLE | PCIE_CAPABLE | - DISPLAY_CAPABLE; - asic = ASIC_ZEUS; - set_register_map(ZEUS_IO_BASE, &zeus_register_map); - gp_resources = dvr_zeus_resources; - - pr_info("Platform: 8500/RNG200 - ZEUS, DVR_CAPABLE\n"); - break; - - case FAMILY_8600: - case FAMILY_8600VZB: - platform_features = DVR_CAPABLE | PCIE_CAPABLE | - DISPLAY_CAPABLE; - asic = ASIC_CRONUS; - set_register_map(CRONUS_IO_BASE, &cronus_register_map); - gp_resources = dvr_cronus_resources; - - pr_info("Platform: 8600/Vz Class B - CRONUS, " - "DVR_CAPABLE\n"); - break; - - case FAMILY_8700: - platform_features = FFS_CAPABLE | PCIE_CAPABLE; - asic = ASIC_GAIA; - set_register_map(GAIA_IO_BASE, &gaia_register_map); - gp_resources = dvr_gaia_resources; - - pr_info("Platform: 8700 - GAIA, DVR_CAPABLE\n"); - break; - - default: - pr_crit("Platform: UNKNOWN PLATFORM\n"); - break; - } - - switch (asic) { - case ASIC_ZEUS: - phys_to_dma_offset = 0x30000000; - break; - case ASIC_CALLIOPE: - phys_to_dma_offset = 0x10000000; - break; - case ASIC_CRONUSLITE: - /* Fall through */ - case ASIC_CRONUS: - /* - * TODO: We suppose 0x10000000 aliases into 0x20000000- - * 0x2XXXXXXX. If 0x10000000 aliases into 0x60000000- - * 0x6XXXXXXX, the offset should be 0x50000000, not 0x10000000. - */ - phys_to_dma_offset = 0x10000000; - break; - default: - phys_to_dma_offset = 0x00000000; - break; - } -} - -/* - * RESOURCE ALLOCATION - * - */ -/* - * Allocates/reserves the Platform memory resources early in the boot process. - * This ignores any resources that are designated IORESOURCE_IO - */ -void __init platform_alloc_bootmem(void) -{ - int i; - int total = 0; - - /* Get persistent memory data from command line before allocating - * resources. This need to happen before normal command line parsing - * has been done */ - pmem_setup_resource(); - - /* Loop through looking for resources that want a particular address */ - for (i = 0; gp_resources[i].flags != 0; i++) { - int size = resource_size(&gp_resources[i]); - if ((gp_resources[i].start != 0) && - ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) { - reserve_bootmem(dma_to_phys(gp_resources[i].start), - size, 0); - total += resource_size(&gp_resources[i]); - pr_info("reserve resource %s at %08x (%u bytes)\n", - gp_resources[i].name, gp_resources[i].start, - resource_size(&gp_resources[i])); - } - } - - /* Loop through assigning addresses for those that are left */ - for (i = 0; gp_resources[i].flags != 0; i++) { - int size = resource_size(&gp_resources[i]); - if ((gp_resources[i].start == 0) && - ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) { - void *mem = alloc_bootmem_pages(size); - - if (mem == NULL) - pr_err("Unable to allocate bootmem pages " - "for %s\n", gp_resources[i].name); - - else { - gp_resources[i].start = - phys_to_dma(virt_to_phys(mem)); - gp_resources[i].end = - gp_resources[i].start + size - 1; - total += size; - pr_info("allocate resource %s at %08x " - "(%u bytes)\n", - gp_resources[i].name, - gp_resources[i].start, size); - } - } - } - - pr_info("Total Platform driver memory allocation: 0x%08x\n", total); - - /* indicate resources that are platform I/O related */ - for (i = 0; gp_resources[i].flags != 0; i++) { - if ((gp_resources[i].start != 0) && - ((gp_resources[i].flags & IORESOURCE_IO) != 0)) { - pr_info("reserved platform resource %s at %08x\n", - gp_resources[i].name, gp_resources[i].start); - } - } -} - -/* - * - * PERSISTENT MEMORY (PMEM) CONFIGURATION - * - */ -static unsigned long pmemaddr __initdata; - -static int __init early_param_pmemaddr(char *p) -{ - pmemaddr = (unsigned long)simple_strtoul(p, NULL, 0); - return 0; -} -early_param("pmemaddr", early_param_pmemaddr); - -static long pmemlen __initdata; - -static int __init early_param_pmemlen(char *p) -{ -/* TODO: we can use this code when and if the bootloader ever changes this */ -#if 0 - pmemlen = (unsigned long)simple_strtoul(p, NULL, 0); -#else - pmemlen = 0x20000; -#endif - return 0; -} -early_param("pmemlen", early_param_pmemlen); - -/* - * Set up persistent memory. If we were given values, we patch the array of - * resources. Otherwise, persistent memory may be allocated anywhere at all. - */ -static void __init pmem_setup_resource(void) -{ - struct resource *resource; - resource = asic_resource_get("DiagPersistentMemory"); - - if (resource && pmemaddr && pmemlen) { - /* The address provided by bootloader is in kseg0. Convert to - * a bus address. */ - resource->start = phys_to_dma(pmemaddr - 0x80000000); - resource->end = resource->start + pmemlen - 1; - - pr_info("persistent memory: start=0x%x end=0x%x\n", - resource->start, resource->end); - } -} - -/* - * - * RESOURCE ACCESS FUNCTIONS - * - */ - -/** - * asic_resource_get - retrieves parameters for a platform resource. - * @name: string to match resource - * - * Returns a pointer to a struct resource corresponding to the given name. - * - * CANNOT BE NAMED platform_resource_get, which would be the obvious choice, - * as this function name is already declared - */ -struct resource *asic_resource_get(const char *name) -{ - int i; - - for (i = 0; gp_resources[i].flags != 0; i++) { - if (strcmp(gp_resources[i].name, name) == 0) - return &gp_resources[i]; - } - - return NULL; -} -EXPORT_SYMBOL(asic_resource_get); - -/** - * platform_release_memory - release pre-allocated memory - * @ptr: pointer to memory to release - * @size: size of resource - * - * This must only be called for memory allocated or reserved via the boot - * memory allocator. - */ -void platform_release_memory(void *ptr, int size) -{ - free_reserved_area(ptr, ptr + size, -1, NULL); -} -EXPORT_SYMBOL(platform_release_memory); - -/* - * - * FEATURE AVAILABILITY FUNCTIONS - * - */ -int platform_supports_dvr(void) -{ - return (platform_features & DVR_CAPABLE) != 0; -} - -int platform_supports_ffs(void) -{ - return (platform_features & FFS_CAPABLE) != 0; -} - -int platform_supports_pcie(void) -{ - return (platform_features & PCIE_CAPABLE) != 0; -} - -int platform_supports_display(void) -{ - return (platform_features & DISPLAY_CAPABLE) != 0; -} |