Turns out that the AMD 8111 datasheet describes this bit of the MCP perfectly.
Signed-off-by: Luc Verhaegen libv@skynet.be --- board_enable.c | 87 ++++++++++++++++++++++++------------------------------- 1 files changed, 38 insertions(+), 49 deletions(-)
diff --git a/board_enable.c b/board_enable.c index 44b1a67..96d764f 100644 --- a/board_enable.c +++ b/board_enable.c @@ -415,38 +415,39 @@ static int board_shuttle_fn25(const char *name) }
/** - * No docs, so we are just guessing that these might be individual gpio lines. + * Very similar to AMD 8111 IO Hub. */ -static void nvidia_mcp_gpio_raise(struct pci_dev *dev, uint8_t offset) +static int nvidia_mcp_gpio_set(int gpio, int raise) { + struct pci_dev *dev; uint16_t base; uint8_t tmp;
- base = pci_read_long(dev, 0x64) & 0x0000FF00; /* System control area */ - - base += 0xC0; - - /* if anyone knows more about nvidia mcps, feel free to explain this */ - tmp = INB(base + offset); - tmp &= ~0x0F; - tmp |= 0x05; - OUTB(tmp, base + offset); -} - -/** - * Suited for the Gigabyte GA-K8N-SLI: CK804 southbridge. - */ -static int board_ga_k8n_sli(const char *name) -{ - struct pci_dev *dev; + if ((gpio < 0) || (gpio > 31)) { + fprintf(stderr, "\nERROR: unsupported GPIO: %d.\n", gpio); + return -1; + }
- dev = pci_dev_find(0x10DE, 0x0050); /* NVIDIA CK804 LPC */ - if (!dev) { - fprintf(stderr, "\nERROR: NVIDIA LPC bridge not found.\n"); + dev = pci_dev_find_vendorclass(0x10DE, 0x0C05); + switch (dev->device_id) { + case 0x0030: /* CK804 */ + case 0x0050: /* MCP04 */ + case 0x0060: /* MCP2 */ + break; + default: + fprintf(stderr, "\nERROR: no nVidia SMBus controller found.\n"); return -1; }
- nvidia_mcp_gpio_raise(dev, 0x21); + base = pci_read_long(dev, 0x64) & 0x0000FF00; /* System control area */ + base += 0xC0; + + tmp = INB(base + gpio); + tmp &= ~0x0F; /* null lower nibble */ + tmp |= 0x04; /* gpio -> output. */ + if (raise) + tmp |= 0x01; + OUTB(tmp, base + gpio);
return 0; } @@ -454,37 +455,25 @@ static int board_ga_k8n_sli(const char *name) /** * Suited for ASUS P5ND2-SLI Deluxe: LGA775 + nForce4 SLI + MCP04. */ -static int board_asus_p5nd2_sli(const char *name) +static int nvidia_mcp_gpio10_raise(const char *name) { - struct pci_dev *dev; - - dev = pci_dev_find(0x10DE, 0x0030); /* NVIDIA nForce4 ISA Bridge */ - if (!dev) { - fprintf(stderr, "\nERROR: NVIDIA ISA bridge not found.\n"); - return -1; - } - - nvidia_mcp_gpio_raise(dev, 0x10); + return nvidia_mcp_gpio_set(0x10, 1); +}
- return 0; +/** + * Suited for the Gigabyte GA-K8N-SLI: CK804 southbridge. + */ +static int nvidia_mcp_gpio21_raise(const char *name) +{ + return nvidia_mcp_gpio_set(0x21, 0x01); }
/** * Suited for EPoX EP-8RDA3+: Socket A + nForce2 Ultra 400 + MCP2. */ -static int board_epox_ep_8rda3plus(const char *name) +static int nvidia_mcp_gpio31_raise(const char *name) { - struct pci_dev *dev; - - dev = pci_dev_find(0x10DE, 0x0060); /* NVIDIA nForce2 ISA Bridge */ - if (!dev) { - fprintf(stderr, "\nERROR: NVIDIA ISA bridge not found.\n"); - return -1; - } - - nvidia_mcp_gpio_raise(dev, 0x31); - - return 0; + return nvidia_mcp_gpio_set(0x31, 0x01); }
static int board_hp_dl145_g3_enable(const char *name) @@ -1152,16 +1141,16 @@ struct board_pciid_enable board_pciid_enables[] = { {0x8086, 0x1A30, 0x1043, 0x8025, 0x8086, 0x244B, 0x104D, 0x80F0, NULL, NULL, "ASUS", "P4B266-LM", intel_ich_gpio21_raise}, {0x8086, 0x2570, 0x1043, 0x80F2, 0x105A, 0x3373, 0x1043, 0x80F5, NULL, NULL, "ASUS", "P4P800-E Deluxe", intel_ich_gpio21_raise}, {0x10B9, 0x1541, 0, 0, 0x10B9, 0x1533, 0, 0, "asus", "p5a", "ASUS", "P5A", board_asus_p5a}, - {0x10DE, 0x0030, 0x1043, 0x818a, 0x8086, 0x100E, 0x1043, 0x80EE, NULL, NULL, "ASUS", "P5ND2-SLI Deluxe", board_asus_p5nd2_sli}, + {0x10DE, 0x0030, 0x1043, 0x818a, 0x8086, 0x100E, 0x1043, 0x80EE, NULL, NULL, "ASUS", "P5ND2-SLI Deluxe", nvidia_mcp_gpio10_raise}, {0x1106, 0x3149, 0x1565, 0x3206, 0x1106, 0x3344, 0x1565, 0x1202, NULL, NULL, "Biostar", "P4M80-M4", it8705_rom_write_enable}, {0x8086, 0x3590, 0x1028, 0x016c, 0x1000, 0x0030, 0x1028, 0x016c, NULL, NULL, "Dell", "PowerEdge 1850", intel_ich_gpio23_raise}, {0x1106, 0x3038, 0x1019, 0x0996, 0x1106, 0x3177, 0x1019, 0x0996, NULL, NULL, "Elitegroup", "K7VTA3", it8705f_write_enable_2e}, {0x1106, 0x3177, 0x1106, 0x3177, 0x1106, 0x3059, 0x1695, 0x3005, NULL, NULL, "EPoX", "EP-8K5A2", w836xx_memw_enable_2e}, - {0x10EC, 0x8139, 0x1695, 0x9001, 0x11C1, 0x5811, 0x1695, 0x9015, NULL, NULL, "EPoX", "EP-8RDA3+", board_epox_ep_8rda3plus}, + {0x10EC, 0x8139, 0x1695, 0x9001, 0x11C1, 0x5811, 0x1695, 0x9015, NULL, NULL, "EPoX", "EP-8RDA3+", nvidia_mcp_gpio31_raise}, {0x8086, 0x7110, 0, 0, 0x8086, 0x7190, 0, 0, "epox", "ep-bx3", "EPoX", "EP-BX3", board_epox_ep_bx3}, {0x1039, 0x0761, 0, 0, 0, 0, 0, 0, "gigabyte", "2761gxdk", "GIGABYTE", "GA-2761GXDK", it87xx_probe_spi_flash}, {0x1106, 0x3227, 0x1458, 0x5001, 0x10ec, 0x8139, 0x1458, 0xe000, NULL, NULL, "GIGABYTE", "GA-7VT600", it8705_rom_write_enable}, - {0x10DE, 0x0050, 0x1458, 0x0C11, 0x10DE, 0x005e, 0x1458, 0x5000, NULL, NULL, "GIGABYTE", "GA-K8N-SLI", board_ga_k8n_sli}, + {0x10DE, 0x0050, 0x1458, 0x0C11, 0x10DE, 0x005e, 0x1458, 0x5000, NULL, NULL, "GIGABYTE", "GA-K8N-SLI", nvidia_mcp_gpio21_raise}, {0x10de, 0x0360, 0, 0, 0, 0, 0, 0, "gigabyte", "m57sli", "GIGABYTE", "GA-M57SLI-S4", it87xx_probe_spi_flash}, {0x10de, 0x03e0, 0, 0, 0, 0, 0, 0, "gigabyte", "m61p", "GIGABYTE", "GA-M61P-S3", it87xx_probe_spi_flash}, {0x1002, 0x4398, 0x1458, 0x5004, 0x1002, 0x4391, 0x1458, 0xb000, NULL, NULL, "GIGABYTE", "GA-MA78G-DS3H", it87xx_probe_spi_flash},