diff options
Diffstat (limited to 'arch/arm/mm/cache-l2x0.c')
-rw-r--r-- | arch/arm/mm/cache-l2x0.c | 502 |
1 files changed, 251 insertions, 251 deletions
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index 3b6213838054..09fe0f5eada5 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -464,6 +464,175 @@ static int l2_wt_override; * pass it though the device tree */ static u32 cache_id_part_number_from_dt; +static void __init l2x0_of_parse(const struct device_node *np, + u32 *aux_val, u32 *aux_mask) +{ + u32 data[2] = { 0, 0 }; + u32 tag = 0; + u32 dirty = 0; + u32 val = 0, mask = 0; + + of_property_read_u32(np, "arm,tag-latency", &tag); + if (tag) { + mask |= L2X0_AUX_CTRL_TAG_LATENCY_MASK; + val |= (tag - 1) << L2X0_AUX_CTRL_TAG_LATENCY_SHIFT; + } + + of_property_read_u32_array(np, "arm,data-latency", + data, ARRAY_SIZE(data)); + if (data[0] && data[1]) { + mask |= L2X0_AUX_CTRL_DATA_RD_LATENCY_MASK | + L2X0_AUX_CTRL_DATA_WR_LATENCY_MASK; + val |= ((data[0] - 1) << L2X0_AUX_CTRL_DATA_RD_LATENCY_SHIFT) | + ((data[1] - 1) << L2X0_AUX_CTRL_DATA_WR_LATENCY_SHIFT); + } + + of_property_read_u32(np, "arm,dirty-latency", &dirty); + if (dirty) { + mask |= L2X0_AUX_CTRL_DIRTY_LATENCY_MASK; + val |= (dirty - 1) << L2X0_AUX_CTRL_DIRTY_LATENCY_SHIFT; + } + + *aux_val &= ~mask; + *aux_val |= val; + *aux_mask &= ~mask; +} + +static void l2x0_resume(void) +{ + if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) { + /* restore aux ctrl and enable l2 */ + l2x0_unlock(readl_relaxed(l2x0_base + L2X0_CACHE_ID)); + + writel_relaxed(l2x0_saved_regs.aux_ctrl, l2x0_base + + L2X0_AUX_CTRL); + + l2x0_inv_all(); + + writel_relaxed(L2X0_CTRL_EN, l2x0_base + L2X0_CTRL); + } +} + +static const struct l2c_init_data of_l2x0_data __initconst = { + .of_parse = l2x0_of_parse, + .outer_cache = { + .inv_range = l2x0_inv_range, + .clean_range = l2x0_clean_range, + .flush_range = l2x0_flush_range, + .flush_all = l2x0_flush_all, + .disable = l2x0_disable, + .sync = l2x0_cache_sync, + .resume = l2x0_resume, + }, +}; + +static void __init pl310_of_parse(const struct device_node *np, + u32 *aux_val, u32 *aux_mask) +{ + u32 data[3] = { 0, 0, 0 }; + u32 tag[3] = { 0, 0, 0 }; + u32 filter[2] = { 0, 0 }; + + of_property_read_u32_array(np, "arm,tag-latency", tag, ARRAY_SIZE(tag)); + if (tag[0] && tag[1] && tag[2]) + writel_relaxed( + ((tag[0] - 1) << L2X0_LATENCY_CTRL_RD_SHIFT) | + ((tag[1] - 1) << L2X0_LATENCY_CTRL_WR_SHIFT) | + ((tag[2] - 1) << L2X0_LATENCY_CTRL_SETUP_SHIFT), + l2x0_base + L2X0_TAG_LATENCY_CTRL); + + of_property_read_u32_array(np, "arm,data-latency", + data, ARRAY_SIZE(data)); + if (data[0] && data[1] && data[2]) + writel_relaxed( + ((data[0] - 1) << L2X0_LATENCY_CTRL_RD_SHIFT) | + ((data[1] - 1) << L2X0_LATENCY_CTRL_WR_SHIFT) | + ((data[2] - 1) << L2X0_LATENCY_CTRL_SETUP_SHIFT), + l2x0_base + L2X0_DATA_LATENCY_CTRL); + + of_property_read_u32_array(np, "arm,filter-ranges", + filter, ARRAY_SIZE(filter)); + if (filter[1]) { + writel_relaxed(ALIGN(filter[0] + filter[1], SZ_1M), + l2x0_base + L2X0_ADDR_FILTER_END); + writel_relaxed((filter[0] & ~(SZ_1M - 1)) | L2X0_ADDR_FILTER_EN, + l2x0_base + L2X0_ADDR_FILTER_START); + } +} + +static void __init pl310_save(void __iomem *base) +{ + u32 l2x0_revision = readl_relaxed(base + L2X0_CACHE_ID) & + L2X0_CACHE_ID_RTL_MASK; + + l2x0_saved_regs.tag_latency = readl_relaxed(base + + L2X0_TAG_LATENCY_CTRL); + l2x0_saved_regs.data_latency = readl_relaxed(base + + L2X0_DATA_LATENCY_CTRL); + l2x0_saved_regs.filter_end = readl_relaxed(base + + L2X0_ADDR_FILTER_END); + l2x0_saved_regs.filter_start = readl_relaxed(base + + L2X0_ADDR_FILTER_START); + + if (l2x0_revision >= L310_CACHE_ID_RTL_R2P0) { + /* + * From r2p0, there is Prefetch offset/control register + */ + l2x0_saved_regs.prefetch_ctrl = readl_relaxed(base + + L2X0_PREFETCH_CTRL); + /* + * From r3p0, there is Power control register + */ + if (l2x0_revision >= L310_CACHE_ID_RTL_R3P0) + l2x0_saved_regs.pwr_ctrl = readl_relaxed(base + + L2X0_POWER_CTRL); + } +} + +static void pl310_resume(void) +{ + u32 l2x0_revision; + + if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) { + /* restore pl310 setup */ + writel_relaxed(l2x0_saved_regs.tag_latency, + l2x0_base + L2X0_TAG_LATENCY_CTRL); + writel_relaxed(l2x0_saved_regs.data_latency, + l2x0_base + L2X0_DATA_LATENCY_CTRL); + writel_relaxed(l2x0_saved_regs.filter_end, + l2x0_base + L2X0_ADDR_FILTER_END); + writel_relaxed(l2x0_saved_regs.filter_start, + l2x0_base + L2X0_ADDR_FILTER_START); + + l2x0_revision = readl_relaxed(l2x0_base + L2X0_CACHE_ID) & + L2X0_CACHE_ID_RTL_MASK; + + if (l2x0_revision >= L310_CACHE_ID_RTL_R2P0) { + writel_relaxed(l2x0_saved_regs.prefetch_ctrl, + l2x0_base + L2X0_PREFETCH_CTRL); + if (l2x0_revision >= L310_CACHE_ID_RTL_R3P0) + writel_relaxed(l2x0_saved_regs.pwr_ctrl, + l2x0_base + L2X0_POWER_CTRL); + } + } + + l2x0_resume(); +} + +static const struct l2c_init_data of_pl310_data __initconst = { + .of_parse = pl310_of_parse, + .save = pl310_save, + .outer_cache = { + .inv_range = l2x0_inv_range, + .clean_range = l2x0_clean_range, + .flush_range = l2x0_flush_range, + .flush_all = l2x0_flush_all, + .disable = l2x0_disable, + .sync = l2x0_cache_sync, + .resume = pl310_resume, + }, +}; + /* * Note that the end addresses passed to Linux primitives are * noninclusive, while the hardware cache range operations use @@ -562,6 +731,75 @@ static void aurora_flush_range(unsigned long start, unsigned long end) } } +static void aurora_save(void __iomem *base) +{ + l2x0_saved_regs.ctrl = readl_relaxed(base + L2X0_CTRL); + l2x0_saved_regs.aux_ctrl = readl_relaxed(base + L2X0_AUX_CTRL); +} + +static void aurora_resume(void) +{ + if (!(readl(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) { + writel_relaxed(l2x0_saved_regs.aux_ctrl, + l2x0_base + L2X0_AUX_CTRL); + writel_relaxed(l2x0_saved_regs.ctrl, l2x0_base + L2X0_CTRL); + } +} + +static void __init aurora_broadcast_l2_commands(void) +{ + __u32 u; + /* Enable Broadcasting of cache commands to L2*/ + __asm__ __volatile__("mrc p15, 1, %0, c15, c2, 0" : "=r"(u)); + u |= AURORA_CTRL_FW; /* Set the FW bit */ + __asm__ __volatile__("mcr p15, 1, %0, c15, c2, 0\n" : : "r"(u)); + isb(); +} + +static void __init aurora_of_parse(const struct device_node *np, + u32 *aux_val, u32 *aux_mask) +{ + u32 val = AURORA_ACR_REPLACEMENT_TYPE_SEMIPLRU; + u32 mask = AURORA_ACR_REPLACEMENT_MASK; + + of_property_read_u32(np, "cache-id-part", + &cache_id_part_number_from_dt); + + /* Determine and save the write policy */ + l2_wt_override = of_property_read_bool(np, "wt-override"); + + if (l2_wt_override) { + val |= AURORA_ACR_FORCE_WRITE_THRO_POLICY; + mask |= AURORA_ACR_FORCE_WRITE_POLICY_MASK; + } + + *aux_val &= ~mask; + *aux_val |= val; + *aux_mask &= ~mask; +} + +static const struct l2c_init_data of_aurora_with_outer_data __initconst = { + .of_parse = aurora_of_parse, + .save = aurora_save, + .outer_cache = { + .inv_range = aurora_inv_range, + .clean_range = aurora_clean_range, + .flush_range = aurora_flush_range, + .flush_all = l2x0_flush_all, + .disable = l2x0_disable, + .sync = l2x0_cache_sync, + .resume = aurora_resume, + }, +}; + +static const struct l2c_init_data of_aurora_no_outer_data __initconst = { + .of_parse = aurora_of_parse, + .save = aurora_save, + .outer_cache = { + .resume = aurora_resume, + }, +}; + /* * For certain Broadcom SoCs, depending on the address range, different offsets * need to be added to the address before passing it to L2 for @@ -703,108 +941,19 @@ static void bcm_flush_range(unsigned long start, unsigned long end) new_end); } -static void __init l2x0_of_parse(const struct device_node *np, - u32 *aux_val, u32 *aux_mask) -{ - u32 data[2] = { 0, 0 }; - u32 tag = 0; - u32 dirty = 0; - u32 val = 0, mask = 0; - - of_property_read_u32(np, "arm,tag-latency", &tag); - if (tag) { - mask |= L2X0_AUX_CTRL_TAG_LATENCY_MASK; - val |= (tag - 1) << L2X0_AUX_CTRL_TAG_LATENCY_SHIFT; - } - - of_property_read_u32_array(np, "arm,data-latency", - data, ARRAY_SIZE(data)); - if (data[0] && data[1]) { - mask |= L2X0_AUX_CTRL_DATA_RD_LATENCY_MASK | - L2X0_AUX_CTRL_DATA_WR_LATENCY_MASK; - val |= ((data[0] - 1) << L2X0_AUX_CTRL_DATA_RD_LATENCY_SHIFT) | - ((data[1] - 1) << L2X0_AUX_CTRL_DATA_WR_LATENCY_SHIFT); - } - - of_property_read_u32(np, "arm,dirty-latency", &dirty); - if (dirty) { - mask |= L2X0_AUX_CTRL_DIRTY_LATENCY_MASK; - val |= (dirty - 1) << L2X0_AUX_CTRL_DIRTY_LATENCY_SHIFT; - } - - *aux_val &= ~mask; - *aux_val |= val; - *aux_mask &= ~mask; -} - -static void __init pl310_of_parse(const struct device_node *np, - u32 *aux_val, u32 *aux_mask) -{ - u32 data[3] = { 0, 0, 0 }; - u32 tag[3] = { 0, 0, 0 }; - u32 filter[2] = { 0, 0 }; - - of_property_read_u32_array(np, "arm,tag-latency", tag, ARRAY_SIZE(tag)); - if (tag[0] && tag[1] && tag[2]) - writel_relaxed( - ((tag[0] - 1) << L2X0_LATENCY_CTRL_RD_SHIFT) | - ((tag[1] - 1) << L2X0_LATENCY_CTRL_WR_SHIFT) | - ((tag[2] - 1) << L2X0_LATENCY_CTRL_SETUP_SHIFT), - l2x0_base + L2X0_TAG_LATENCY_CTRL); - - of_property_read_u32_array(np, "arm,data-latency", - data, ARRAY_SIZE(data)); - if (data[0] && data[1] && data[2]) - writel_relaxed( - ((data[0] - 1) << L2X0_LATENCY_CTRL_RD_SHIFT) | - ((data[1] - 1) << L2X0_LATENCY_CTRL_WR_SHIFT) | - ((data[2] - 1) << L2X0_LATENCY_CTRL_SETUP_SHIFT), - l2x0_base + L2X0_DATA_LATENCY_CTRL); - - of_property_read_u32_array(np, "arm,filter-ranges", - filter, ARRAY_SIZE(filter)); - if (filter[1]) { - writel_relaxed(ALIGN(filter[0] + filter[1], SZ_1M), - l2x0_base + L2X0_ADDR_FILTER_END); - writel_relaxed((filter[0] & ~(SZ_1M - 1)) | L2X0_ADDR_FILTER_EN, - l2x0_base + L2X0_ADDR_FILTER_START); - } -} - -static void __init pl310_save(void __iomem *base) -{ - u32 l2x0_revision = readl_relaxed(base + L2X0_CACHE_ID) & - L2X0_CACHE_ID_RTL_MASK; - - l2x0_saved_regs.tag_latency = readl_relaxed(base + - L2X0_TAG_LATENCY_CTRL); - l2x0_saved_regs.data_latency = readl_relaxed(base + - L2X0_DATA_LATENCY_CTRL); - l2x0_saved_regs.filter_end = readl_relaxed(base + - L2X0_ADDR_FILTER_END); - l2x0_saved_regs.filter_start = readl_relaxed(base + - L2X0_ADDR_FILTER_START); - - if (l2x0_revision >= L310_CACHE_ID_RTL_R2P0) { - /* - * From r2p0, there is Prefetch offset/control register - */ - l2x0_saved_regs.prefetch_ctrl = readl_relaxed(base + - L2X0_PREFETCH_CTRL); - /* - * From r3p0, there is Power control register - */ - if (l2x0_revision >= L310_CACHE_ID_RTL_R3P0) - l2x0_saved_regs.pwr_ctrl = readl_relaxed(base + - L2X0_POWER_CTRL); - } -} - -static void aurora_save(void __iomem *base) -{ - l2x0_saved_regs.ctrl = readl_relaxed(base + L2X0_CTRL); - l2x0_saved_regs.aux_ctrl = readl_relaxed(base + L2X0_AUX_CTRL); -} +static const struct l2c_init_data of_bcm_l2x0_data __initconst = { + .of_parse = pl310_of_parse, + .save = pl310_save, + .outer_cache = { + .inv_range = bcm_inv_range, + .clean_range = bcm_clean_range, + .flush_range = bcm_flush_range, + .flush_all = l2x0_flush_all, + .disable = l2x0_disable, + .sync = l2x0_cache_sync, + .resume = pl310_resume, + }, +}; static void __init tauros3_save(void __iomem *base) { @@ -814,60 +963,6 @@ static void __init tauros3_save(void __iomem *base) readl_relaxed(base + L2X0_PREFETCH_CTRL); } -static void l2x0_resume(void) -{ - if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) { - /* restore aux ctrl and enable l2 */ - l2x0_unlock(readl_relaxed(l2x0_base + L2X0_CACHE_ID)); - - writel_relaxed(l2x0_saved_regs.aux_ctrl, l2x0_base + - L2X0_AUX_CTRL); - - l2x0_inv_all(); - - writel_relaxed(L2X0_CTRL_EN, l2x0_base + L2X0_CTRL); - } -} - -static void pl310_resume(void) -{ - u32 l2x0_revision; - - if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) { - /* restore pl310 setup */ - writel_relaxed(l2x0_saved_regs.tag_latency, - l2x0_base + L2X0_TAG_LATENCY_CTRL); - writel_relaxed(l2x0_saved_regs.data_latency, - l2x0_base + L2X0_DATA_LATENCY_CTRL); - writel_relaxed(l2x0_saved_regs.filter_end, - l2x0_base + L2X0_ADDR_FILTER_END); - writel_relaxed(l2x0_saved_regs.filter_start, - l2x0_base + L2X0_ADDR_FILTER_START); - - l2x0_revision = readl_relaxed(l2x0_base + L2X0_CACHE_ID) & - L2X0_CACHE_ID_RTL_MASK; - - if (l2x0_revision >= L310_CACHE_ID_RTL_R2P0) { - writel_relaxed(l2x0_saved_regs.prefetch_ctrl, - l2x0_base + L2X0_PREFETCH_CTRL); - if (l2x0_revision >= L310_CACHE_ID_RTL_R3P0) - writel_relaxed(l2x0_saved_regs.pwr_ctrl, - l2x0_base + L2X0_POWER_CTRL); - } - } - - l2x0_resume(); -} - -static void aurora_resume(void) -{ - if (!(readl(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) { - writel_relaxed(l2x0_saved_regs.aux_ctrl, - l2x0_base + L2X0_AUX_CTRL); - writel_relaxed(l2x0_saved_regs.ctrl, l2x0_base + L2X0_CTRL); - } -} - static void tauros3_resume(void) { if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) { @@ -880,87 +975,6 @@ static void tauros3_resume(void) l2x0_resume(); } -static void __init aurora_broadcast_l2_commands(void) -{ - __u32 u; - /* Enable Broadcasting of cache commands to L2*/ - __asm__ __volatile__("mrc p15, 1, %0, c15, c2, 0" : "=r"(u)); - u |= AURORA_CTRL_FW; /* Set the FW bit */ - __asm__ __volatile__("mcr p15, 1, %0, c15, c2, 0\n" : : "r"(u)); - isb(); -} - -static void __init aurora_of_parse(const struct device_node *np, - u32 *aux_val, u32 *aux_mask) -{ - u32 val = AURORA_ACR_REPLACEMENT_TYPE_SEMIPLRU; - u32 mask = AURORA_ACR_REPLACEMENT_MASK; - - of_property_read_u32(np, "cache-id-part", - &cache_id_part_number_from_dt); - - /* Determine and save the write policy */ - l2_wt_override = of_property_read_bool(np, "wt-override"); - - if (l2_wt_override) { - val |= AURORA_ACR_FORCE_WRITE_THRO_POLICY; - mask |= AURORA_ACR_FORCE_WRITE_POLICY_MASK; - } - - *aux_val &= ~mask; - *aux_val |= val; - *aux_mask &= ~mask; -} - -static const struct l2c_init_data of_pl310_data __initconst = { - .of_parse = pl310_of_parse, - .save = pl310_save, - .outer_cache = { - .inv_range = l2x0_inv_range, - .clean_range = l2x0_clean_range, - .flush_range = l2x0_flush_range, - .flush_all = l2x0_flush_all, - .disable = l2x0_disable, - .sync = l2x0_cache_sync, - .resume = pl310_resume, - }, -}; - -static const struct l2c_init_data of_l2x0_data __initconst = { - .of_parse = l2x0_of_parse, - .outer_cache = { - .inv_range = l2x0_inv_range, - .clean_range = l2x0_clean_range, - .flush_range = l2x0_flush_range, - .flush_all = l2x0_flush_all, - .disable = l2x0_disable, - .sync = l2x0_cache_sync, - .resume = l2x0_resume, - }, -}; - -static const struct l2c_init_data of_aurora_with_outer_data __initconst = { - .of_parse = aurora_of_parse, - .save = aurora_save, - .outer_cache = { - .inv_range = aurora_inv_range, - .clean_range = aurora_clean_range, - .flush_range = aurora_flush_range, - .flush_all = l2x0_flush_all, - .disable = l2x0_disable, - .sync = l2x0_cache_sync, - .resume = aurora_resume, - }, -}; - -static const struct l2c_init_data of_aurora_no_outer_data __initconst = { - .of_parse = aurora_of_parse, - .save = aurora_save, - .outer_cache = { - .resume = aurora_resume, - }, -}; - static const struct l2c_init_data of_tauros3_data __initconst = { .save = tauros3_save, /* Tauros3 broadcasts L1 cache operations to L2 */ @@ -969,20 +983,6 @@ static const struct l2c_init_data of_tauros3_data __initconst = { }, }; -static const struct l2c_init_data of_bcm_l2x0_data __initconst = { - .of_parse = pl310_of_parse, - .save = pl310_save, - .outer_cache = { - .inv_range = bcm_inv_range, - .clean_range = bcm_clean_range, - .flush_range = bcm_flush_range, - .flush_all = l2x0_flush_all, - .disable = l2x0_disable, - .sync = l2x0_cache_sync, - .resume = pl310_resume, - }, -}; - #define L2C_ID(name, fns) { .compatible = name, .data = (void *)&fns } static const struct of_device_id l2x0_ids[] __initconst = { L2C_ID("arm,l210-cache", of_l2x0_data), |