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authorPeter Oruba <peter.oruba@amd.com>2007-09-28 22:42:06 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:53:50 -0700
commit007755eb86c3953bb8615bd016246fc99056580c (patch)
treee981b57164e776ef9dcad02f6c519ff7d8e70372 /drivers/net/e1000
parent7c32f470f4f6a0fdc6944cefcd22f288e59a0ae2 (diff)
downloadop-kernel-dev-007755eb86c3953bb8615bd016246fc99056580c.zip
op-kernel-dev-007755eb86c3953bb8615bd016246fc99056580c.tar.gz
PCI-X/PCI-Express read control interfaces: use them in e1000
These driver changes incorporate the proposed PCI-X / PCI-Express read byte count interface. Reading and setting those valuse doesn't take place "manually", instead wrapping functions are called to allow quirks for some PCI bridges. Signed-off by: Peter Oruba <peter.oruba@amd.com> Based on work by Stephen Hemminger <shemminger@linux-foundation.org> Acked-by: Auke Kok <auke-jan.h.kok@intel.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/e1000')
-rw-r--r--drivers/net/e1000/e1000_hw.c25
-rw-r--r--drivers/net/e1000/e1000_hw.h2
-rw-r--r--drivers/net/e1000/e1000_main.c14
3 files changed, 19 insertions, 22 deletions
diff --git a/drivers/net/e1000/e1000_hw.c b/drivers/net/e1000/e1000_hw.c
index 8604adb..8fa0fe4 100644
--- a/drivers/net/e1000/e1000_hw.c
+++ b/drivers/net/e1000/e1000_hw.c
@@ -871,10 +871,6 @@ e1000_init_hw(struct e1000_hw *hw)
uint32_t ctrl;
uint32_t i;
int32_t ret_val;
- uint16_t pcix_cmd_word;
- uint16_t pcix_stat_hi_word;
- uint16_t cmd_mmrbc;
- uint16_t stat_mmrbc;
uint32_t mta_size;
uint32_t reg_data;
uint32_t ctrl_ext;
@@ -964,24 +960,9 @@ e1000_init_hw(struct e1000_hw *hw)
break;
default:
/* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */
- if (hw->bus_type == e1000_bus_type_pcix) {
- e1000_read_pci_cfg(hw, PCIX_COMMAND_REGISTER, &pcix_cmd_word);
- e1000_read_pci_cfg(hw, PCIX_STATUS_REGISTER_HI,
- &pcix_stat_hi_word);
- cmd_mmrbc = (pcix_cmd_word & PCIX_COMMAND_MMRBC_MASK) >>
- PCIX_COMMAND_MMRBC_SHIFT;
- stat_mmrbc = (pcix_stat_hi_word & PCIX_STATUS_HI_MMRBC_MASK) >>
- PCIX_STATUS_HI_MMRBC_SHIFT;
- if (stat_mmrbc == PCIX_STATUS_HI_MMRBC_4K)
- stat_mmrbc = PCIX_STATUS_HI_MMRBC_2K;
- if (cmd_mmrbc > stat_mmrbc) {
- pcix_cmd_word &= ~PCIX_COMMAND_MMRBC_MASK;
- pcix_cmd_word |= stat_mmrbc << PCIX_COMMAND_MMRBC_SHIFT;
- e1000_write_pci_cfg(hw, PCIX_COMMAND_REGISTER,
- &pcix_cmd_word);
- }
- }
- break;
+ if (hw->bus_type == e1000_bus_type_pcix && e1000_pcix_get_mmrbc(hw) > 2048)
+ e1000_pcix_set_mmrbc(hw, 2048);
+ break;
}
/* More time needed for PHY to initialize */
diff --git a/drivers/net/e1000/e1000_hw.h b/drivers/net/e1000/e1000_hw.h
index 07f0ea7..a2a86c5 100644
--- a/drivers/net/e1000/e1000_hw.h
+++ b/drivers/net/e1000/e1000_hw.h
@@ -424,6 +424,8 @@ void e1000_pci_clear_mwi(struct e1000_hw *hw);
void e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t * value);
void e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t * value);
int32_t e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value);
+void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc);
+int e1000_pcix_get_mmrbc(struct e1000_hw *hw);
/* Port I/O is only supported on 82544 and newer */
void e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value);
int32_t e1000_disable_pciex_master(struct e1000_hw *hw);
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index ad444c9..10505de 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -4903,6 +4903,20 @@ e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
pci_write_config_word(adapter->pdev, reg, *value);
}
+int
+e1000_pcix_get_mmrbc(struct e1000_hw *hw)
+{
+ struct e1000_adapter *adapter = hw->back;
+ return pcix_get_mmrbc(adapter->pdev);
+}
+
+void
+e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc)
+{
+ struct e1000_adapter *adapter = hw->back;
+ pcix_set_mmrbc(adapter->pdev, mmrbc);
+}
+
int32_t
e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
{
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