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author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-01-30 09:39:23 +0200 |
---|---|---|
committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-02-01 21:26:35 +0000 |
commit | c01a505282526a7038463e937cbec83f704a6a89 (patch) | |
tree | 592075489e013af85b239b65e6b99cdb8dfbe328 /src | |
parent | 757571eec16295d66a8c06033a61b73bad9c06fa (diff) |
sb/intel/common: Rename i2c_block_read() to i2c_eeprom_read()
Datasheets describe the used command as 'I2C Read' but adding the
word 'eeprom' in between should avoid further confusion with other
block commands.
Followups will add a symmetrical pair of commands i2c_block_read()
and i2c_block_write() that operate via I2C_EN bit and have a 32
byte size restriction on block transfers. For some hardware revision
these block commands are available, while 'I2C Read' was not.
Change-Id: I4494ab2985afc7f737ddacc8d706a5d5395e35cf
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31151
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src')
-rw-r--r-- | src/northbridge/intel/i945/raminit.c | 2 | ||||
-rw-r--r-- | src/northbridge/intel/pineview/raminit.c | 2 | ||||
-rw-r--r-- | src/northbridge/intel/x4x/raminit.c | 8 | ||||
-rw-r--r-- | src/southbridge/intel/common/smbus.c | 13 | ||||
-rw-r--r-- | src/southbridge/intel/common/smbus.h | 2 | ||||
-rw-r--r-- | src/southbridge/intel/i82801gx/early_smbus.c | 4 | ||||
-rw-r--r-- | src/southbridge/intel/i82801gx/i82801gx.h | 2 | ||||
-rw-r--r-- | src/southbridge/intel/i82801jx/early_smbus.c | 4 | ||||
-rw-r--r-- | src/southbridge/intel/i82801jx/i82801jx.h | 2 |
9 files changed, 25 insertions, 14 deletions
diff --git a/src/northbridge/intel/i945/raminit.c b/src/northbridge/intel/i945/raminit.c index f3c3df68ac..dece9bffae 100644 --- a/src/northbridge/intel/i945/raminit.c +++ b/src/northbridge/intel/i945/raminit.c @@ -381,7 +381,7 @@ static void gather_common_timing(struct sys_info *sysinfo, * only the first 64 bytes contain data needed for raminit. */ - bytes_read = i2c_block_read(device, 0, 64, raw_spd); + bytes_read = i2c_eeprom_read(device, 0, 64, raw_spd); printk(BIOS_DEBUG, "Reading SPD using i2c block operation.\n"); if (IS_ENABLED(CONFIG_DEBUG_RAM_SETUP) && bytes_read > 0) hexdump(raw_spd, bytes_read); diff --git a/src/northbridge/intel/pineview/raminit.c b/src/northbridge/intel/pineview/raminit.c index ee19b61841..ed633fd745 100644 --- a/src/northbridge/intel/pineview/raminit.c +++ b/src/northbridge/intel/pineview/raminit.c @@ -273,7 +273,7 @@ static void sdram_read_spds(struct sysinfo *s) u8 i, chan; s->dt0mode = 0; FOR_EACH_DIMM(i) { - if (i2c_block_read(s->spd_map[i], 0, 64, s->dimms[i].spd_data) != 64) + if (i2c_eeprom_read(s->spd_map[i], 0, 64, s->dimms[i].spd_data) != 64) s->dimms[i].card_type = 0; s->dimms[i].card_type = s->dimms[i].spd_data[62] & 0x1f; diff --git a/src/northbridge/intel/x4x/raminit.c b/src/northbridge/intel/x4x/raminit.c index d9fa49d9da..1fd600484f 100644 --- a/src/northbridge/intel/x4x/raminit.c +++ b/src/northbridge/intel/x4x/raminit.c @@ -47,15 +47,15 @@ static inline int spd_read_byte(unsigned int device, unsigned int address) static u16 ddr2_get_crc(u8 device, u8 len) { u8 raw_spd[128] = {}; - i2c_block_read(device, 64, 9, &raw_spd[64]); - i2c_block_read(device, 93, 6, &raw_spd[93]); + i2c_eeprom_read(device, 64, 9, &raw_spd[64]); + i2c_eeprom_read(device, 93, 6, &raw_spd[93]); return spd_ddr2_calc_unique_crc(raw_spd, len); } static u16 ddr3_get_crc(u8 device, u8 len) { u8 raw_spd[256] = {}; - i2c_block_read(device, 117, 11, &raw_spd[117]); + i2c_eeprom_read(device, 117, 11, &raw_spd[117]); return spd_ddr3_calc_unique_crc(raw_spd, len); } @@ -531,7 +531,7 @@ static void decode_spd_select_timings(struct sysinfo *s) die("Mixing up dimm types is not supported!\n"); printk(BIOS_DEBUG, "Decoding dimm %d\n", i); - if (i2c_block_read(device, 0, 128, raw_spd) != 128) { + if (i2c_eeprom_read(device, 0, 128, raw_spd) != 128) { printk(BIOS_DEBUG, "i2c block operation failed," " trying smbus byte operation.\n"); for (j = 0; j < 128; j++) diff --git a/src/southbridge/intel/common/smbus.c b/src/southbridge/intel/common/smbus.c index fd8b6aa8dd..a842a61222 100644 --- a/src/southbridge/intel/common/smbus.c +++ b/src/southbridge/intel/common/smbus.c @@ -363,11 +363,22 @@ int do_smbus_block_write(unsigned int smbus_base, u8 device, u8 cmd, } /* Only since ICH5 */ -int do_i2c_block_read(unsigned int smbus_base, u8 device, +static int has_i2c_read_command(void) +{ + if (IS_ENABLED(CONFIG_SOUTHBRIDGE_INTEL_I82371EB) || + IS_ENABLED(CONFIG_SOUTHBRIDGE_INTEL_I82801DX)) + return 0; + return 1; +} + +int do_i2c_eeprom_read(unsigned int smbus_base, u8 device, unsigned int offset, const unsigned int bytes, u8 *buf) { int ret; + if (!has_i2c_read_command()) + return SMBUS_ERROR; + /* Set up for a i2c block data read. * * FIXME: Address parameter changes to XMIT_READ(device) with diff --git a/src/southbridge/intel/common/smbus.h b/src/southbridge/intel/common/smbus.h index be1aa76c21..ded31d0ae2 100644 --- a/src/southbridge/intel/common/smbus.h +++ b/src/southbridge/intel/common/smbus.h @@ -41,6 +41,6 @@ int do_smbus_block_read(unsigned int smbus_base, u8 device, int do_smbus_block_write(unsigned int smbus_base, u8 device, u8 cmd, unsigned int bytes, const u8 *buf); /* Only since ICH5 */ -int do_i2c_block_read(unsigned int smbus_base, u8 device, +int do_i2c_eeprom_read(unsigned int smbus_base, u8 device, unsigned int offset, unsigned int bytes, u8 *buf); #endif diff --git a/src/southbridge/intel/i82801gx/early_smbus.c b/src/southbridge/intel/i82801gx/early_smbus.c index 698458b86a..9dddcec362 100644 --- a/src/southbridge/intel/i82801gx/early_smbus.c +++ b/src/southbridge/intel/i82801gx/early_smbus.c @@ -54,9 +54,9 @@ int smbus_read_byte(unsigned int device, unsigned int address) return do_smbus_read_byte(SMBUS_IO_BASE, device, address); } -int i2c_block_read(unsigned int device, unsigned int offset, u32 bytes, u8 *buf) +int i2c_eeprom_read(unsigned int device, unsigned int offset, u32 bytes, u8 *buf) { - return do_i2c_block_read(SMBUS_IO_BASE, device, offset, bytes, buf); + return do_i2c_eeprom_read(SMBUS_IO_BASE, device, offset, bytes, buf); } int smbus_block_read(unsigned int device, unsigned int cmd, u8 bytes, u8 *buf) diff --git a/src/southbridge/intel/i82801gx/i82801gx.h b/src/southbridge/intel/i82801gx/i82801gx.h index 66d47ae157..12935c24f2 100644 --- a/src/southbridge/intel/i82801gx/i82801gx.h +++ b/src/southbridge/intel/i82801gx/i82801gx.h @@ -45,7 +45,7 @@ void i82801gx_enable(struct device *dev); #else void enable_smbus(void); int smbus_read_byte(unsigned int device, unsigned int address); -int i2c_block_read(unsigned int device, unsigned int cmd, unsigned int bytes, +int i2c_eeprom_read(unsigned int device, unsigned int cmd, unsigned int bytes, u8 *buf); int smbus_block_read(unsigned int device, unsigned int cmd, u8 bytes, u8 *buf); int smbus_block_write(unsigned int device, unsigned int cmd, u8 bytes, diff --git a/src/southbridge/intel/i82801jx/early_smbus.c b/src/southbridge/intel/i82801jx/early_smbus.c index bd689556e9..8c870454fe 100644 --- a/src/southbridge/intel/i82801jx/early_smbus.c +++ b/src/southbridge/intel/i82801jx/early_smbus.c @@ -51,9 +51,9 @@ int smbus_read_byte(unsigned device, unsigned address) return do_smbus_read_byte(SMBUS_IO_BASE, device, address); } -int i2c_block_read(unsigned int device, unsigned int offset, u32 bytes, u8 *buf) +int i2c_eeprom_read(unsigned int device, unsigned int offset, u32 bytes, u8 *buf) { - return do_i2c_block_read(SMBUS_IO_BASE, device, offset, bytes, buf); + return do_i2c_eeprom_read(SMBUS_IO_BASE, device, offset, bytes, buf); } int smbus_block_read(unsigned int device, unsigned int cmd, u8 bytes, u8 *buf) diff --git a/src/southbridge/intel/i82801jx/i82801jx.h b/src/southbridge/intel/i82801jx/i82801jx.h index ad3b38177a..00148480a1 100644 --- a/src/southbridge/intel/i82801jx/i82801jx.h +++ b/src/southbridge/intel/i82801jx/i82801jx.h @@ -233,7 +233,7 @@ static inline int lpc_is_mobile(const u16 devid) #if defined(__PRE_RAM__) void enable_smbus(void); int smbus_read_byte(unsigned device, unsigned address); -int i2c_block_read(unsigned int device, unsigned int cmd, unsigned int bytes, +int i2c_eeprom_read(unsigned int device, unsigned int cmd, unsigned int bytes, u8 *buf); int smbus_block_read(unsigned int device, unsigned int cmd, u8 bytes, u8 *buf); int smbus_block_write(unsigned int device, unsigned int cmd, u8 bytes, |