diff options
Diffstat (limited to 'src/southbridge/intel/lynxpoint/pch.c')
| -rw-r--r-- | src/southbridge/intel/lynxpoint/pch.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/src/southbridge/intel/lynxpoint/pch.c b/src/southbridge/intel/lynxpoint/pch.c index 58c68cdf05..05462c5e74 100644 --- a/src/southbridge/intel/lynxpoint/pch.c +++ b/src/southbridge/intel/lynxpoint/pch.c @@ -201,7 +201,7 @@ static inline int iobp_poll(void) return 0; } -static u32 pch_iobp_read(u32 address) +u32 pch_iobp_read(u32 address) { u16 status; @@ -239,10 +239,15 @@ static u32 pch_iobp_read(u32 address) return RCBA32(IOBPD); } -void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue) +void pch_iobp_write(u32 address, u32 data) { u16 status; - u32 data = pch_iobp_read(address); + + if (!iobp_poll()) + return; + + /* Set the address */ + RCBA32(IOBPIRI) = address; /* WRITE OPCODE */ status = RCBA16(IOBPS); @@ -250,9 +255,6 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue) status |= IOBPS_WRITE; RCBA16(IOBPS) = status; - /* Update the data */ - data &= andvalue; - data |= orvalue; RCBA32(IOBPD) = data; /* Undocumented magic */ @@ -276,6 +278,17 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue) printk(BIOS_INFO, "IOBP: set 0x%08x to 0x%08x\n", address, data); } +void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue) +{ + u32 data = pch_iobp_read(address); + + /* Update the data */ + data &= andvalue; + data |= orvalue; + + pch_iobp_write(address, data); +} + /* Check if any port in set X to X+3 is enabled */ static int pch_pcie_check_set_enabled(device_t dev) { |