diff options
Diffstat (limited to 'arch/blackfin/include/asm/cplbinit.h')
| -rw-r--r-- | arch/blackfin/include/asm/cplbinit.h | 108 |
1 files changed, 34 insertions, 74 deletions
diff --git a/arch/blackfin/include/asm/cplbinit.h b/arch/blackfin/include/asm/cplbinit.h index 2aeec87d24e1..05b14a631d0c 100644 --- a/arch/blackfin/include/asm/cplbinit.h +++ b/arch/blackfin/include/asm/cplbinit.h @@ -32,96 +32,56 @@ #include <asm/blackfin.h> #include <asm/cplb.h> +#include <linux/threads.h> -#ifdef CONFIG_MPU - -#include <asm/cplb-mpu.h> -extern void bfin_icache_init(struct cplb_entry *icplb_tbl); -extern void bfin_dcache_init(struct cplb_entry *icplb_tbl); - +#ifdef CONFIG_CPLB_SWITCH_TAB_L1 +# define PDT_ATTR __attribute__((l1_data)) #else +# define PDT_ATTR +#endif -#define INITIAL_T 0x1 -#define SWITCH_T 0x2 -#define I_CPLB 0x4 -#define D_CPLB 0x8 +struct cplb_entry { + unsigned long data, addr; +}; -#define ASYNC_MEMORY_CPLB_COVERAGE ((ASYNC_BANK0_SIZE + ASYNC_BANK1_SIZE + \ - ASYNC_BANK2_SIZE + ASYNC_BANK3_SIZE) / SIZE_4M) +struct cplb_boundary { + unsigned long eaddr; /* End of this region. */ + unsigned long data; /* CPLB data value. */ +}; -#define CPLB_MEM CONFIG_MAX_MEM_SIZE +extern struct cplb_boundary dcplb_bounds[]; +extern struct cplb_boundary icplb_bounds[]; +extern int dcplb_nr_bounds, icplb_nr_bounds; -/* -* Number of required data CPLB switchtable entries -* MEMSIZE / 4 (we mostly install 4M page size CPLBs -* approx 16 for smaller 1MB page size CPLBs for allignment purposes -* 1 for L1 Data Memory -* possibly 1 for L2 Data Memory -* 1 for CONFIG_DEBUG_HUNT_FOR_ZERO -* 1 for ASYNC Memory -*/ -#define MAX_SWITCH_D_CPLBS (((CPLB_MEM / 4) + 16 + 1 + 1 + 1 \ - + ASYNC_MEMORY_CPLB_COVERAGE) * 2) +extern struct cplb_entry dcplb_tbl[NR_CPUS][MAX_CPLBS]; +extern struct cplb_entry icplb_tbl[NR_CPUS][MAX_CPLBS]; +extern int first_switched_icplb; +extern int first_switched_dcplb; -/* -* Number of required instruction CPLB switchtable entries -* MEMSIZE / 4 (we mostly install 4M page size CPLBs -* approx 12 for smaller 1MB page size CPLBs for allignment purposes -* 1 for L1 Instruction Memory -* possibly 1 for L2 Instruction Memory -* 1 for CONFIG_DEBUG_HUNT_FOR_ZERO -*/ -#define MAX_SWITCH_I_CPLBS (((CPLB_MEM / 4) + 12 + 1 + 1 + 1) * 2) - -/* Number of CPLB table entries, used for cplb-nompu. */ -#define CPLB_TBL_ENTRIES (16 * 4) - -enum { - ZERO_P, L1I_MEM, L1D_MEM, L2_MEM, SDRAM_KERN, SDRAM_RAM_MTD, SDRAM_DMAZ, - RES_MEM, ASYNC_MEM, OCB_ROM -}; +extern int nr_dcplb_miss[], nr_icplb_miss[], nr_icplb_supv_miss[]; +extern int nr_dcplb_prot[], nr_cplb_flush[]; -struct cplb_desc { - u32 start; /* start address */ - u32 end; /* end address */ - u32 psize; /* prefered size if any otherwise 1MB or 4MB*/ - u16 attr;/* attributes */ - u16 i_conf;/* I-CPLB DATA */ - u16 d_conf;/* D-CPLB DATA */ - u16 valid;/* valid */ - const s8 name[30];/* name */ -}; +#ifdef CONFIG_MPU -struct cplb_tab { - u_long *tab; - u16 pos; - u16 size; -}; +extern int first_mask_dcplb; -extern u_long icplb_tables[NR_CPUS][CPLB_TBL_ENTRIES+1]; -extern u_long dcplb_tables[NR_CPUS][CPLB_TBL_ENTRIES+1]; +extern int page_mask_order; +extern int page_mask_nelts; -/* Till here we are discussing about the static memory management model. - * However, the operating envoronments commonly define more CPLB - * descriptors to cover the entire addressable memory than will fit into - * the available on-chip 16 CPLB MMRs. When this happens, the below table - * will be used which will hold all the potentially required CPLB descriptors - * - * This is how Page descriptor Table is implemented in uClinux/Blackfin. - */ +extern unsigned long *current_rwx_mask[NR_CPUS]; -extern u_long ipdt_tables[NR_CPUS][MAX_SWITCH_I_CPLBS+1]; -extern u_long dpdt_tables[NR_CPUS][MAX_SWITCH_D_CPLBS+1]; -#ifdef CONFIG_CPLB_INFO -extern u_long ipdt_swapcount_tables[NR_CPUS][MAX_SWITCH_I_CPLBS]; -extern u_long dpdt_swapcount_tables[NR_CPUS][MAX_SWITCH_D_CPLBS]; -#endif -extern void bfin_icache_init(u_long icplbs[]); -extern void bfin_dcache_init(u_long dcplbs[]); +extern void flush_switched_cplbs(unsigned int); +extern void set_mask_dcplbs(unsigned long *, unsigned int); + +extern void __noreturn panic_cplb_error(int seqstat, struct pt_regs *); #endif /* CONFIG_MPU */ +extern void bfin_icache_init(struct cplb_entry *icplb_tbl); +extern void bfin_dcache_init(struct cplb_entry *icplb_tbl); + #if defined(CONFIG_BFIN_DCACHE) || defined(CONFIG_BFIN_ICACHE) +extern void generate_cplb_tables_all(void); extern void generate_cplb_tables_cpu(unsigned int cpu); #endif #endif |