diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2006-03-28 17:04:00 -0500 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2006-04-01 21:31:29 -0500 |
| commit | 81507ea9cfa64e9851b53e0fefebfa776eda9ecb (patch) | |
| tree | 0e76e2e8dd0bc5d0542c8490f09af886a5c82749 /drivers/acpi | |
| parent | 683aa4012f53b2ada0f430487e05d37b0d94e90a (diff) | |
ACPI: request correct fixed hardware resource type (MMIO vs I/O port)
ACPI supports fixed hardware (PM_TMR, GPE blocks, etc) in either I/O port
or MMIO space, but used to always request the regions from I/O space
because it didn't check the address_space_id.
Sample ACPI fixed hardware in MMIO space (HP rx2600), was incorrectly
reported in /proc/ioports, now reported in /proc/iomem:
ff5c1004-ff5c1007 : PM_TMR
ff5c1008-ff5c100b : PM1a_EVT_BLK
ff5c100c-ff5c100d : PM1a_CNT_BLK
ff5c1010-ff5c1013 : GPE0_BLK
ff5c1014-ff5c1017 : GPE1_BLK
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/motherboard.c | 41 |
1 files changed, 23 insertions, 18 deletions
diff --git a/drivers/acpi/motherboard.c b/drivers/acpi/motherboard.c index 468244147ec..14ffe68a094 100644 --- a/drivers/acpi/motherboard.c +++ b/drivers/acpi/motherboard.c @@ -123,41 +123,46 @@ static struct acpi_driver acpi_motherboard_driver2 = { }, }; +static void __init acpi_request_region (struct acpi_generic_address *addr, + unsigned int length, char *desc) +{ + if (!addr->address || !length) + return; + + if (addr->address_space_id == ACPI_ADR_SPACE_SYSTEM_IO) + request_region(addr->address, length, desc); + else if (addr->address_space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) + request_mem_region(addr->address, length, desc); +} + static void __init acpi_reserve_resources(void) { - if (acpi_gbl_FADT->xpm1a_evt_blk.address && acpi_gbl_FADT->pm1_evt_len) - request_region(acpi_gbl_FADT->xpm1a_evt_blk.address, + acpi_request_region(&acpi_gbl_FADT->xpm1a_evt_blk, acpi_gbl_FADT->pm1_evt_len, "PM1a_EVT_BLK"); - if (acpi_gbl_FADT->xpm1b_evt_blk.address && acpi_gbl_FADT->pm1_evt_len) - request_region(acpi_gbl_FADT->xpm1b_evt_blk.address, + acpi_request_region(&acpi_gbl_FADT->xpm1b_evt_blk, acpi_gbl_FADT->pm1_evt_len, "PM1b_EVT_BLK"); - if (acpi_gbl_FADT->xpm1a_cnt_blk.address && acpi_gbl_FADT->pm1_cnt_len) - request_region(acpi_gbl_FADT->xpm1a_cnt_blk.address, + acpi_request_region(&acpi_gbl_FADT->xpm1a_cnt_blk, acpi_gbl_FADT->pm1_cnt_len, "PM1a_CNT_BLK"); - if (acpi_gbl_FADT->xpm1b_cnt_blk.address && acpi_gbl_FADT->pm1_cnt_len) - request_region(acpi_gbl_FADT->xpm1b_cnt_blk.address, + acpi_request_region(&acpi_gbl_FADT->xpm1b_cnt_blk, acpi_gbl_FADT->pm1_cnt_len, "PM1b_CNT_BLK"); - if (acpi_gbl_FADT->xpm_tmr_blk.address && acpi_gbl_FADT->pm_tm_len == 4) - request_region(acpi_gbl_FADT->xpm_tmr_blk.address, 4, "PM_TMR"); + if (acpi_gbl_FADT->pm_tm_len == 4) + acpi_request_region(&acpi_gbl_FADT->xpm_tmr_blk, 4, "PM_TMR"); - if (acpi_gbl_FADT->xpm2_cnt_blk.address && acpi_gbl_FADT->pm2_cnt_len) - request_region(acpi_gbl_FADT->xpm2_cnt_blk.address, + acpi_request_region(&acpi_gbl_FADT->xpm2_cnt_blk, acpi_gbl_FADT->pm2_cnt_len, "PM2_CNT_BLK"); /* Length of GPE blocks must be a non-negative multiple of 2 */ - if (acpi_gbl_FADT->xgpe0_blk.address && acpi_gbl_FADT->gpe0_blk_len && - !(acpi_gbl_FADT->gpe0_blk_len & 0x1)) - request_region(acpi_gbl_FADT->xgpe0_blk.address, + if (!(acpi_gbl_FADT->gpe0_blk_len & 0x1)) + acpi_request_region(&acpi_gbl_FADT->xgpe0_blk, acpi_gbl_FADT->gpe0_blk_len, "GPE0_BLK"); - if (acpi_gbl_FADT->xgpe1_blk.address && acpi_gbl_FADT->gpe1_blk_len && - !(acpi_gbl_FADT->gpe1_blk_len & 0x1)) - request_region(acpi_gbl_FADT->xgpe1_blk.address, + if (!(acpi_gbl_FADT->gpe1_blk_len & 0x1)) + acpi_request_region(&acpi_gbl_FADT->xgpe1_blk, acpi_gbl_FADT->gpe1_blk_len, "GPE1_BLK"); } |