diff options
Diffstat (limited to 'arch/mips/mm/pg-sb1.c')
| -rw-r--r-- | arch/mips/mm/pg-sb1.c | 65 |
1 files changed, 37 insertions, 28 deletions
diff --git a/arch/mips/mm/pg-sb1.c b/arch/mips/mm/pg-sb1.c index 1b6df7133c1..148c65b9cd8 100644 --- a/arch/mips/mm/pg-sb1.c +++ b/arch/mips/mm/pg-sb1.c @@ -60,7 +60,8 @@ static inline void clear_page_cpu(void *page) " .set noreorder \n" #ifdef CONFIG_CPU_HAS_PREFETCH " daddiu %0, %0, 128 \n" - " pref " SB1_PREF_STORE_STREAMED_HINT ", -128(%0) \n" /* Prefetch the first 4 lines */ + " pref " SB1_PREF_STORE_STREAMED_HINT ", -128(%0) \n" + /* Prefetch the first 4 lines */ " pref " SB1_PREF_STORE_STREAMED_HINT ", -96(%0) \n" " pref " SB1_PREF_STORE_STREAMED_HINT ", -64(%0) \n" " pref " SB1_PREF_STORE_STREAMED_HINT ", -32(%0) \n" @@ -106,7 +107,8 @@ static inline void copy_page_cpu(void *to, void *from) #ifdef CONFIG_CPU_HAS_PREFETCH " daddiu %0, %0, 128 \n" " daddiu %1, %1, 128 \n" - " pref " SB1_PREF_LOAD_STREAMED_HINT ", -128(%0)\n" /* Prefetch the first 4 lines */ + " pref " SB1_PREF_LOAD_STREAMED_HINT ", -128(%0)\n" + /* Prefetch the first 4 lines */ " pref " SB1_PREF_STORE_STREAMED_HINT ", -128(%1)\n" " pref " SB1_PREF_LOAD_STREAMED_HINT ", -96(%0)\n" " pref " SB1_PREF_STORE_STREAMED_HINT ", -96(%1)\n" @@ -207,66 +209,73 @@ typedef struct dmadscr_s { u64 pad_b; } dmadscr_t; -static dmadscr_t page_descr[NR_CPUS] __attribute__((aligned(SMP_CACHE_BYTES))); +static dmadscr_t page_descr[DM_NUM_CHANNELS] + __attribute__((aligned(SMP_CACHE_BYTES))); void sb1_dma_init(void) { - int cpu = smp_processor_id(); - u64 base_val = CPHYSADDR(&page_descr[cpu]) | V_DM_DSCR_BASE_RINGSZ(1); + int i; - bus_writeq(base_val, - (void *)IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_BASE))); - bus_writeq(base_val | M_DM_DSCR_BASE_RESET, - (void *)IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_BASE))); - bus_writeq(base_val | M_DM_DSCR_BASE_ENABL, - (void *)IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_BASE))); + for (i = 0; i < DM_NUM_CHANNELS; i++) { + const u64 base_val = CPHYSADDR(&page_descr[i]) | + V_DM_DSCR_BASE_RINGSZ(1); + volatile void *base_reg = + IOADDR(A_DM_REGISTER(i, R_DM_DSCR_BASE)); + + __raw_writeq(base_val, base_reg); + __raw_writeq(base_val | M_DM_DSCR_BASE_RESET, base_reg); + __raw_writeq(base_val | M_DM_DSCR_BASE_ENABL, base_reg); + } } void clear_page(void *page) { - int cpu = smp_processor_id(); + u64 to_phys = CPHYSADDR(page); + unsigned int cpu = smp_processor_id(); - /* if the page is above Kseg0, use old way */ + /* if the page is not in KSEG0, use old way */ if ((long)KSEGX(page) != (long)CKSEG0) return clear_page_cpu(page); - page_descr[cpu].dscr_a = CPHYSADDR(page) | M_DM_DSCRA_ZERO_MEM | M_DM_DSCRA_L2C_DEST | M_DM_DSCRA_INTERRUPT; + page_descr[cpu].dscr_a = to_phys | M_DM_DSCRA_ZERO_MEM | + M_DM_DSCRA_L2C_DEST | M_DM_DSCRA_INTERRUPT; page_descr[cpu].dscr_b = V_DM_DSCRB_SRC_LENGTH(PAGE_SIZE); - bus_writeq(1, (void *)IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_COUNT))); + __raw_writeq(1, IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_COUNT))); /* * Don't really want to do it this way, but there's no * reliable way to delay completion detection. */ - while (!(bus_readq((void *)(IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_BASE_DEBUG)) & - M_DM_DSCR_BASE_INTERRUPT)))) + while (!(__raw_readq(IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_BASE_DEBUG))) + & M_DM_DSCR_BASE_INTERRUPT)) ; - bus_readq((void *)IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_BASE))); + __raw_readq(IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_BASE))); } void copy_page(void *to, void *from) { - unsigned long from_phys = CPHYSADDR(from); - unsigned long to_phys = CPHYSADDR(to); - int cpu = smp_processor_id(); + u64 from_phys = CPHYSADDR(from); + u64 to_phys = CPHYSADDR(to); + unsigned int cpu = smp_processor_id(); - /* if either page is above Kseg0, use old way */ + /* if any page is not in KSEG0, use old way */ if ((long)KSEGX(to) != (long)CKSEG0 || (long)KSEGX(from) != (long)CKSEG0) return copy_page_cpu(to, from); - page_descr[cpu].dscr_a = CPHYSADDR(to_phys) | M_DM_DSCRA_L2C_DEST | M_DM_DSCRA_INTERRUPT; - page_descr[cpu].dscr_b = CPHYSADDR(from_phys) | V_DM_DSCRB_SRC_LENGTH(PAGE_SIZE); - bus_writeq(1, (void *)IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_COUNT))); + page_descr[cpu].dscr_a = to_phys | M_DM_DSCRA_L2C_DEST | + M_DM_DSCRA_INTERRUPT; + page_descr[cpu].dscr_b = from_phys | V_DM_DSCRB_SRC_LENGTH(PAGE_SIZE); + __raw_writeq(1, IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_COUNT))); /* * Don't really want to do it this way, but there's no * reliable way to delay completion detection. */ - while (!(bus_readq((void *)(IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_BASE_DEBUG)) & - M_DM_DSCR_BASE_INTERRUPT)))) + while (!(__raw_readq(IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_BASE_DEBUG))) + & M_DM_DSCR_BASE_INTERRUPT)) ; - bus_readq((void *)IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_BASE))); + __raw_readq(IOADDR(A_DM_REGISTER(cpu, R_DM_DSCR_BASE))); } #else /* !CONFIG_SIBYTE_DMA_PAGEOPS */ |