From 6ba6bc24eb58c77f38a0818dd05da865abfb659b Mon Sep 17 00:00:00 2001 From: Felix Held Date: Mon, 7 Feb 2022 21:11:25 +0100 Subject: soc/amd/common/block/lpc/espi_util: add decode range register helpers Introduce and use functions to translate eSPI IO/MMIO decode range IDs into the corresponding register bits and the IO/MMIO range and size register IDs into register offsets. This is a preparation to support the additional eSPI decode ranges on Sabrina where not all enable bits and base/size registers for one type of decode ranges are consecutive. Signed-off-by: Felix Held Change-Id: Id91fe32447a06b049e33dfdacc8edfa2ebb2df39 Reviewed-on: https://review.coreboot.org/c/coreboot/+/61778 Tested-by: build bot (Jenkins) Reviewed-by: Raul Rangel --- src/soc/amd/common/block/lpc/espi_util.c | 66 +++++++++++++++++++++++--------- 1 file changed, 48 insertions(+), 18 deletions(-) (limited to 'src/soc') diff --git a/src/soc/amd/common/block/lpc/espi_util.c b/src/soc/amd/common/block/lpc/espi_util.c index c1d0a5799a..40f22d57d9 100644 --- a/src/soc/amd/common/block/lpc/espi_util.c +++ b/src/soc/amd/common/block/lpc/espi_util.c @@ -60,6 +60,36 @@ static void espi_write8(unsigned int reg, uint8_t val) write8((void *)(espi_get_bar() + reg), val); } +static inline uint32_t espi_decode_io_range_en_bit(unsigned int idx) +{ + return ESPI_DECODE_IO_RANGE_EN(idx); +} + +static inline uint32_t espi_decode_mmio_range_en_bit(unsigned int idx) +{ + return ESPI_DECODE_MMIO_RANGE_EN(idx); +} + +static inline unsigned int espi_io_range_base_reg(unsigned int idx) +{ + return ESPI_IO_RANGE_BASE(idx); +} + +static inline unsigned int espi_io_range_size_reg(unsigned int idx) +{ + return ESPI_IO_RANGE_SIZE(idx); +} + +static inline unsigned int espi_mmio_range_base_reg(unsigned int idx) +{ + return ESPI_MMIO_RANGE_BASE(idx); +} + +static inline unsigned int espi_mmio_range_size_reg(unsigned int idx) +{ + return ESPI_MMIO_RANGE_SIZE(idx); +} + static void espi_enable_decode(uint32_t decode_en) { uint32_t val; @@ -82,10 +112,10 @@ static int espi_find_io_window(uint16_t win_base) int i; for (i = 0; i < ESPI_GENERIC_IO_WIN_COUNT; i++) { - if (!espi_is_decode_enabled(ESPI_DECODE_IO_RANGE_EN(i))) + if (!espi_is_decode_enabled(espi_decode_io_range_en_bit(i))) continue; - if (espi_read16(ESPI_IO_RANGE_BASE(i)) == win_base) + if (espi_read16(espi_io_range_base_reg(i)) == win_base) return i; } @@ -97,7 +127,7 @@ static int espi_get_unused_io_window(void) int i; for (i = 0; i < ESPI_GENERIC_IO_WIN_COUNT; i++) { - if (!espi_is_decode_enabled(ESPI_DECODE_IO_RANGE_EN(i))) + if (!espi_is_decode_enabled(espi_decode_io_range_en_bit(i))) return i; } @@ -112,12 +142,12 @@ static void espi_clear_decodes(void) espi_write16(ESPI_DECODE, 0); for (idx = 0; idx < ESPI_GENERIC_IO_WIN_COUNT; idx++) { - espi_write16(ESPI_IO_RANGE_BASE(idx), 0); - espi_write8(ESPI_IO_RANGE_SIZE(idx), 0); + espi_write16(espi_io_range_base_reg(idx), 0); + espi_write8(espi_io_range_size_reg(idx), 0); } for (idx = 0; idx < ESPI_GENERIC_MMIO_WIN_COUNT; idx++) { - espi_write32(ESPI_MMIO_RANGE_BASE(idx), 0); - espi_write16(ESPI_MMIO_RANGE_SIZE(idx), 0); + espi_write32(espi_mmio_range_base_reg(idx), 0); + espi_write16(espi_mmio_range_size_reg(idx), 0); } } @@ -149,13 +179,13 @@ static int espi_std_io_decode(uint16_t base, size_t size) static size_t espi_get_io_window_size(int idx) { - return espi_read8(ESPI_IO_RANGE_SIZE(idx)) + 1; + return espi_read8(espi_io_range_size_reg(idx)) + 1; } static void espi_write_io_window(int idx, uint16_t base, size_t size) { - espi_write16(ESPI_IO_RANGE_BASE(idx), base); - espi_write8(ESPI_IO_RANGE_SIZE(idx), size - 1); + espi_write16(espi_io_range_base_reg(idx), base); + espi_write8(espi_io_range_size_reg(idx), size - 1); } static enum cb_err espi_open_generic_io_window(uint16_t base, size_t size) @@ -192,7 +222,7 @@ static enum cb_err espi_open_generic_io_window(uint16_t base, size_t size) } espi_write_io_window(idx, base, win_size); - espi_enable_decode(ESPI_DECODE_IO_RANGE_EN(idx)); + espi_enable_decode(espi_decode_io_range_en_bit(idx)); } return CB_SUCCESS; @@ -216,10 +246,10 @@ static int espi_find_mmio_window(uint32_t win_base) int i; for (i = 0; i < ESPI_GENERIC_MMIO_WIN_COUNT; i++) { - if (!espi_is_decode_enabled(ESPI_DECODE_MMIO_RANGE_EN(i))) + if (!espi_is_decode_enabled(espi_decode_mmio_range_en_bit(i))) continue; - if (espi_read32(ESPI_MMIO_RANGE_BASE(i)) == win_base) + if (espi_read32(espi_mmio_range_base_reg(i)) == win_base) return i; } @@ -231,7 +261,7 @@ static int espi_get_unused_mmio_window(void) int i; for (i = 0; i < ESPI_GENERIC_MMIO_WIN_COUNT; i++) { - if (!espi_is_decode_enabled(ESPI_DECODE_MMIO_RANGE_EN(i))) + if (!espi_is_decode_enabled(espi_decode_mmio_range_en_bit(i))) return i; } @@ -241,13 +271,13 @@ static int espi_get_unused_mmio_window(void) static size_t espi_get_mmio_window_size(int idx) { - return espi_read16(ESPI_MMIO_RANGE_SIZE(idx)) + 1; + return espi_read16(espi_mmio_range_size_reg(idx)) + 1; } static void espi_write_mmio_window(int idx, uint32_t base, size_t size) { - espi_write32(ESPI_MMIO_RANGE_BASE(idx), base); - espi_write16(ESPI_MMIO_RANGE_SIZE(idx), size - 1); + espi_write32(espi_mmio_range_base_reg(idx), base); + espi_write16(espi_mmio_range_size_reg(idx), size - 1); } enum cb_err espi_open_mmio_window(uint32_t base, size_t size) @@ -284,7 +314,7 @@ enum cb_err espi_open_mmio_window(uint32_t base, size_t size) } espi_write_mmio_window(idx, base, win_size); - espi_enable_decode(ESPI_DECODE_MMIO_RANGE_EN(idx)); + espi_enable_decode(espi_decode_mmio_range_en_bit(idx)); } return CB_SUCCESS; -- cgit v1.2.3