diff options
Diffstat (limited to 'src/southbridge/via/vt8237r/vt8237_ctrl.c')
| -rw-r--r-- | src/southbridge/via/vt8237r/vt8237_ctrl.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/southbridge/via/vt8237r/vt8237_ctrl.c b/src/southbridge/via/vt8237r/vt8237_ctrl.c index 300cadec94..f3cc30ed88 100644 --- a/src/southbridge/via/vt8237r/vt8237_ctrl.c +++ b/src/southbridge/via/vt8237r/vt8237_ctrl.c @@ -168,6 +168,75 @@ static void vt8237s_vlink_init(struct device *dev) } +static void vt8237a_vlink_init(struct device *dev) +{ + u8 reg; + device_t devfun7; + + devfun7 = dev_find_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_K8T890CE_7, 0); + if (!devfun7) + devfun7 = dev_find_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_K8M890CE_7, 0); + if (!devfun7) + devfun7 = dev_find_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_K8T890CF_7, 0); + /* No pairing NB was found. */ + if (!devfun7) + return; + + /* + * This init code is valid only for the VT8237A! For different + * sounthbridges (e.g. VT8237S, VT8237R and VT8251) a different + * init code is required. + * + * FIXME: This is based on vt8237r_vlink_init() in + * k8t890/k8t890_ctrl.c and modified to fit what the AMI + * BIOS on my M2V wrote to these registers (by looking + * at lspci -nxxx output). + * Works for me. + */ + + /* disable auto disconnect */ + reg = pci_read_config8(devfun7, 0x42); + reg &= ~0x4; + pci_write_config8(devfun7, 0x42, reg); + + /* NB part setup */ + pci_write_config8(devfun7, 0xb5, 0x88); + pci_write_config8(devfun7, 0xb6, 0x88); + pci_write_config8(devfun7, 0xb7, 0x61); + + reg = pci_read_config8(devfun7, 0xb4); + reg |= 0x11; + pci_write_config8(devfun7, 0xb4, reg); + + pci_write_config8(devfun7, 0xb0, 0x6); + pci_write_config8(devfun7, 0xb1, 0x1); + + /* SB part setup */ + pci_write_config8(dev, 0xb7, 0x50); + pci_write_config8(dev, 0xb9, 0x88); + pci_write_config8(dev, 0xba, 0x8a); + pci_write_config8(dev, 0xbb, 0x88); + + reg = pci_read_config8(dev, 0xbd); + reg |= 0x3; + reg &= ~0x4; + pci_write_config8(dev, 0xbd, reg); + + reg = pci_read_config8(dev, 0xbc); + reg &= ~0x7; + pci_write_config8(dev, 0xbc, reg); + + pci_write_config8(dev, 0x48, 0x23); + + /* enable auto disconnect, for STPGNT and HALT */ + reg = pci_read_config8(devfun7, 0x42); + reg |= 0x7; + pci_write_config8(devfun7, 0x42, reg); +} + static void ctrl_enable(struct device *dev) { /* Enable the 0:13 and 0:13.1. */ @@ -193,6 +262,12 @@ static void ctrl_init(struct device *dev) vt8237s_vlink_init(dev); } + devsb = dev_find_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_VT8237A_LPC, 0); + if (devsb) { + vt8237a_vlink_init(dev); + } + /* Configure PCI1 and copy mirror registers from D0F3. */ vt8237_cfg(dev); dump_south(dev); |