diff options
Diffstat (limited to 'src/southbridge/nvidia/mcp55')
| -rw-r--r-- | src/southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c | 42 |
1 files changed, 26 insertions, 16 deletions
diff --git a/src/southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c b/src/southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c index 280e827cc9..f1f5c2ab11 100644 --- a/src/southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c +++ b/src/southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c @@ -21,32 +21,42 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <stdint.h> +#include <usbdebug.h> +#include <device/pci_def.h> + #if CONFIG_HT_CHAIN_END_UNITID_BASE != 0x20 - #define MCP55_DEVN_BASE CONFIG_HT_CHAIN_END_UNITID_BASE +#define MCP55_DEVN_BASE CONFIG_HT_CHAIN_END_UNITID_BASE #else - #define MCP55_DEVN_BASE CONFIG_HT_CHAIN_UNITID_BASE +#define MCP55_DEVN_BASE CONFIG_HT_CHAIN_UNITID_BASE #endif -#define EHCI_BAR_INDEX 0x10 -#define EHCI_BAR 0xFEF00000 +#define EHCI_BAR 0xFEF00000 /* EHCI BAR address */ +#define EHCI_BAR_INDEX 0x10 #define EHCI_DEBUG_OFFSET 0x98 -#include <usbdebug.h> - -void set_debug_port(unsigned port) +void set_debug_port(unsigned int port) { - uint32_t dword; - dword = pci_read_config32(PCI_DEV(0, MCP55_DEVN_BASE+2, 1), 0x74); - dword &= ~(0xf<<12); - dword |= (port<<12); - pci_write_config32(PCI_DEV(0, MCP55_DEVN_BASE+2, 1), 0x74, dword); + u32 dword; + device_t dev = PCI_DEV(0, MCP55_DEVN_BASE + 2, 1); /* USB EHCI */ + /* Write the port number to 0x74[15:12]. */ + dword = pci_read_config32(dev, 0x74); + dword &= ~(0xf << 12); + dword |= (port << 12); + pci_write_config32(dev, 0x74, dword); } -static void mcp55_enable_usbdebug(unsigned port) +static void mcp55_enable_usbdebug(unsigned int port) { + device_t dev = PCI_DEV(0, MCP55_DEVN_BASE + 2, 1); /* USB EHCI */ + + /* Mark the requested physical USB port (1-15) as the Debug Port. */ set_debug_port(port); - pci_write_config32(PCI_DEV(0, MCP55_DEVN_BASE+2, 1), EHCI_BAR_INDEX, EHCI_BAR); - pci_write_config8(PCI_DEV(0, MCP55_DEVN_BASE+2, 1), 0x04, 0x2); // mem space enabe -} + /* Set the EHCI BAR address. */ + pci_write_config32(dev, EHCI_BAR_INDEX, EHCI_BAR); + + /* Enable access to the EHCI memory space registers. */ + pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY); +} |