diff options
| author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2006-09-27 12:53:57 -0700 |
|---|---|---|
| committer | Auke Kok <juke-jan.h.kok@intel.com> | 2006-09-27 12:53:57 -0700 |
| commit | caeccb682a2483a79162bb66a431175d4134ae0b (patch) | |
| tree | b4f79e694f1cd2332c8294371ba15e1b906f768e /drivers/net/e1000 | |
| parent | 61c2505fd5044d9e108acc6b469d3caa02522043 (diff) | |
e1000: add PCI-E capability detection code
Add code to display the detected PCI-E bus width.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Diffstat (limited to 'drivers/net/e1000')
| -rw-r--r-- | drivers/net/e1000/e1000_hw.c | 17 | ||||
| -rw-r--r-- | drivers/net/e1000/e1000_hw.h | 6 | ||||
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 16 |
3 files changed, 35 insertions, 4 deletions
diff --git a/drivers/net/e1000/e1000_hw.c b/drivers/net/e1000/e1000_hw.c index dceaf5bd5f5..48aff8d054f 100644 --- a/drivers/net/e1000/e1000_hw.c +++ b/drivers/net/e1000/e1000_hw.c @@ -6556,6 +6556,8 @@ e1000_tbi_adjust_stats(struct e1000_hw *hw, void e1000_get_bus_info(struct e1000_hw *hw) { + int32_t ret_val; + uint16_t pci_ex_link_status; uint32_t status; switch (hw->mac_type) { @@ -6565,18 +6567,25 @@ e1000_get_bus_info(struct e1000_hw *hw) hw->bus_speed = e1000_bus_speed_unknown; hw->bus_width = e1000_bus_width_unknown; break; + case e1000_82571: case e1000_82572: case e1000_82573: + case e1000_80003es2lan: hw->bus_type = e1000_bus_type_pci_express; hw->bus_speed = e1000_bus_speed_2500; - hw->bus_width = e1000_bus_width_pciex_1; + ret_val = e1000_read_pcie_cap_reg(hw, + PCI_EX_LINK_STATUS, + &pci_ex_link_status); + if (ret_val) + hw->bus_width = e1000_bus_width_unknown; + else + hw->bus_width = (pci_ex_link_status & PCI_EX_LINK_WIDTH_MASK) >> + PCI_EX_LINK_WIDTH_SHIFT; break; - case e1000_82571: case e1000_ich8lan: - case e1000_80003es2lan: hw->bus_type = e1000_bus_type_pci_express; hw->bus_speed = e1000_bus_speed_2500; - hw->bus_width = e1000_bus_width_pciex_4; + hw->bus_width = e1000_bus_width_pciex_1; break; default: status = E1000_READ_REG(hw, STATUS); diff --git a/drivers/net/e1000/e1000_hw.h b/drivers/net/e1000/e1000_hw.h index b9364b5fd76..434492cc329 100644 --- a/drivers/net/e1000/e1000_hw.h +++ b/drivers/net/e1000/e1000_hw.h @@ -418,6 +418,7 @@ void e1000_pci_set_mwi(struct e1000_hw *hw); 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); /* 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); @@ -2220,6 +2221,11 @@ struct e1000_host_command_info { #define E1000_FACTPS_LAN_FUNC_SEL 0x40000000 #define E1000_FACTPS_PM_STATE_CHANGED 0x80000000 +/* PCI-Ex Config Space */ +#define PCI_EX_LINK_STATUS 0x12 +#define PCI_EX_LINK_WIDTH_MASK 0x3F0 +#define PCI_EX_LINK_WIDTH_SHIFT 4 + /* EEPROM Commands - Microwire */ #define EEPROM_READ_OPCODE_MICROWIRE 0x6 /* EEPROM read opcode */ #define EEPROM_WRITE_OPCODE_MICROWIRE 0x5 /* EEPROM write opcode */ diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index fd30161d2f1..e2615782966 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -4473,6 +4473,22 @@ e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) pci_write_config_word(adapter->pdev, reg, *value); } +int32_t +e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) +{ + struct e1000_adapter *adapter = hw->back; + uint16_t cap_offset; + + cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); + if (!cap_offset) + return -E1000_ERR_CONFIG; + + pci_read_config_word(adapter->pdev, cap_offset + reg, value); + + return E1000_SUCCESS; +} + + void e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) { |