projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3c1fbd51 MF |
1 | /* |
| 2 | * Blackfin cache control code (simpler control-style functions) | |
| 3 | * | |
| ea426e6c | 4 | * Copyright 2004-2009 Analog Devices Inc. |
| 3c1fbd51 | 5 | * |
| 3c1fbd51 MF |
6 | * Licensed under the GPL-2 or later. |
| 7 | */ | |
| 8 | ||
| ea426e6c | 9 | #include <linux/init.h> |
| 3c1fbd51 | 10 | #include <asm/blackfin.h> |
| ea426e6c | 11 | #include <asm/cplbinit.h> |
| 3c1fbd51 MF |
12 | |
| 13 | /* Invalidate the Entire Data cache by | |
| 14 | * clearing DMC[1:0] bits | |
| 15 | */ | |
| 16 | void blackfin_invalidate_entire_dcache(void) | |
| 17 | { | |
| 18 | u32 dmem = bfin_read_DMEM_CONTROL(); | |
| 3c1fbd51 MF |
19 | bfin_write_DMEM_CONTROL(dmem & ~0xc); |
| 20 | SSYNC(); | |
| 21 | bfin_write_DMEM_CONTROL(dmem); | |
| 22 | SSYNC(); | |
| 23 | } | |
| 47e9dedb SZ |
24 | |
| 25 | /* Invalidate the Entire Instruction cache by | |
| 26 | * clearing IMC bit | |
| 27 | */ | |
| 28 | void blackfin_invalidate_entire_icache(void) | |
| 29 | { | |
| 30 | u32 imem = bfin_read_IMEM_CONTROL(); | |
| 31 | bfin_write_IMEM_CONTROL(imem & ~0x4); | |
| 32 | SSYNC(); | |
| 33 | bfin_write_IMEM_CONTROL(imem); | |
| 34 | SSYNC(); | |
| 35 | } | |
| 36 | ||
| ea426e6c MF |
37 | #if defined(CONFIG_BFIN_ICACHE) || defined(CONFIG_BFIN_DCACHE) |
| 38 | ||
| 39 | static void | |
| 40 | bfin_cache_init(struct cplb_entry *cplb_tbl, unsigned long cplb_addr, | |
| 41 | unsigned long cplb_data, unsigned long mem_control, | |
| 42 | unsigned long mem_mask) | |
| 43 | { | |
| 44 | int i; | |
| 45 | ||
| 46 | for (i = 0; i < MAX_CPLBS; i++) { | |
| 47 | bfin_write32(cplb_addr + i * 4, cplb_tbl[i].addr); | |
| 48 | bfin_write32(cplb_data + i * 4, cplb_tbl[i].data); | |
| 49 | } | |
| 50 | ||
| 51 | _enable_cplb(mem_control, mem_mask); | |
| 52 | } | |
| 53 | ||
| 54 | #ifdef CONFIG_BFIN_ICACHE | |
| 55 | void __cpuinit bfin_icache_init(struct cplb_entry *icplb_tbl) | |
| 56 | { | |
| 57 | bfin_cache_init(icplb_tbl, ICPLB_ADDR0, ICPLB_DATA0, IMEM_CONTROL, | |
| 58 | (IMC | ENICPLB)); | |
| 59 | } | |
| 60 | #endif | |
| 61 | ||
| 62 | #ifdef CONFIG_BFIN_DCACHE | |
| 63 | void __cpuinit bfin_dcache_init(struct cplb_entry *dcplb_tbl) | |
| 64 | { | |
| 65 | /* | |
| 66 | * Anomaly notes: | |
| 67 | * 05000287 - We implement workaround #2 - Change the DMEM_CONTROL | |
| 68 | * register, so that the port preferences for DAG0 and DAG1 are set | |
| 69 | * to port B | |
| 70 | */ | |
| 71 | bfin_cache_init(dcplb_tbl, DCPLB_ADDR0, DCPLB_DATA0, DMEM_CONTROL, | |
| 72 | (DMEM_CNTR | PORT_PREF0 | (ANOMALY_05000287 ? PORT_PREF1 : 0))); | |
| 73 | } | |
| 74 | #endif | |
| 75 | ||
| 76 | #endif |