static void serialio_init(struct device *dev)
{
struct southbridge_intel_lynxpoint_config *config = dev->chip_info;
struct resource *bar0, *bar1;
int sio_index = -1;
u32 reg32;
printk(BIOS_DEBUG, "Initializing Serial IO device\n");
/* Ensure memory and bus master are enabled */
reg32 = pci_read_config32(dev, PCI_COMMAND);
reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
pci_write_config32(dev, PCI_COMMAND, reg32);
/* Find BAR0 and BAR1 */
bar0 = find_resource(dev, PCI_BASE_ADDRESS_0);
if (!bar0)
return;
bar1 = find_resource(dev, PCI_BASE_ADDRESS_1);
if (!bar1)
return;
if (!config->sio_acpi_mode)
serialio_enable_clock(bar0);
switch (dev->path.pci.devfn) {
case PCI_DEVFN(21, 0): /* SDMA */
sio_index = SIO_ID_SDMA;
serialio_init_once(config->sio_acpi_mode);
serialio_d21_mode(sio_index, SIO_PIN_INTB,
config->sio_acpi_mode);
break;
case PCI_DEVFN(21, 1): /* I2C0 */
sio_index = SIO_ID_I2C0;
serialio_d21_ltr(bar0);
serialio_i2c_voltage_sel(bar0, config->sio_i2c0_voltage);
serialio_d21_mode(sio_index, SIO_PIN_INTC,
config->sio_acpi_mode);
break;
case PCI_DEVFN(21, 2): /* I2C1 */
sio_index = SIO_ID_I2C1;
serialio_d21_ltr(bar0);
serialio_i2c_voltage_sel(bar0, config->sio_i2c1_voltage);
serialio_d21_mode(sio_index, SIO_PIN_INTC,
config->sio_acpi_mode);
break;
case PCI_DEVFN(21, 3): /* SPI0 */
sio_index = SIO_ID_SPI0;
serialio_d21_ltr(bar0);
serialio_d21_mode(sio_index, SIO_PIN_INTC,
config->sio_acpi_mode);
break;
case PCI_DEVFN(21, 4): /* SPI1 */
sio_index = SIO_ID_SPI1;
serialio_d21_ltr(bar0);
serialio_d21_mode(sio_index, SIO_PIN_INTC,
config->sio_acpi_mode);
break;
case PCI_DEVFN(21, 5): /* UART0 */
sio_index = SIO_ID_UART0;
serialio_d21_ltr(bar0);
serialio_d21_mode(sio_index, SIO_PIN_INTD,
config->sio_acpi_mode);
break;
case PCI_DEVFN(21, 6): /* UART1 */
sio_index = SIO_ID_UART1;
serialio_d21_ltr(bar0);
serialio_d21_mode(sio_index, SIO_PIN_INTD,
config->sio_acpi_mode);
break;
case PCI_DEVFN(23, 0): /* SDIO */
sio_index = SIO_ID_SDIO;
serialio_d23_ltr(bar0);
serialio_d23_mode(config->sio_acpi_mode);
break;
default:
return;
}
if (config->sio_acpi_mode) {
global_nvs_t *gnvs;
/* Find ACPI NVS to update BARs */
gnvs = (global_nvs_t *)cbmem_find(CBMEM_ID_ACPI_GNVS);
if (!gnvs) {
printk(BIOS_ERR, "Unable to locate Global NVS\n");
return;
}
/* Save BAR0 and BAR1 to ACPI NVS */
gnvs->s0b[sio_index] = (u32)bar0->base;
gnvs->s1b[sio_index] = (u32)bar1->base;
}
}
static void serialio_init(struct device *dev)
{
config_t *config = dev->chip_info;
struct resource *bar0, *bar1;
int sio_index = -1;
u32 reg32;
printk(BIOS_DEBUG, "Initializing Serial IO device\n");
/* Ensure memory and bus master are enabled */
reg32 = pci_read_config32(dev, PCI_COMMAND);
reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
pci_write_config32(dev, PCI_COMMAND, reg32);
/* Find BAR0 and BAR1 */
bar0 = find_resource(dev, PCI_BASE_ADDRESS_0);
if (!bar0)
return;
bar1 = find_resource(dev, PCI_BASE_ADDRESS_1);
if (!bar1)
return;
if (!config->sio_acpi_mode)
serialio_enable_clock(bar0);
switch (dev->path.pci.devfn) {
case PCH_DEVFN_SDMA: /* SDMA */
sio_index = SIO_ID_SDMA;
serialio_init_once(config->sio_acpi_mode);
serialio_d21_mode(sio_index, SIO_PIN_INTB,
config->sio_acpi_mode);
break;
case PCH_DEVFN_I2C0: /* I2C0 */
sio_index = SIO_ID_I2C0;
serialio_d21_ltr(bar0);
serialio_i2c_voltage_sel(bar0, config->sio_i2c0_voltage);
serialio_d21_mode(sio_index, SIO_PIN_INTC,
config->sio_acpi_mode);
break;
case PCH_DEVFN_I2C1: /* I2C1 */
sio_index = SIO_ID_I2C1;
serialio_d21_ltr(bar0);
serialio_i2c_voltage_sel(bar0, config->sio_i2c1_voltage);
serialio_d21_mode(sio_index, SIO_PIN_INTC,
config->sio_acpi_mode);
break;
case PCH_DEVFN_SPI0: /* SPI0 */
sio_index = SIO_ID_SPI0;
serialio_d21_ltr(bar0);
serialio_d21_mode(sio_index, SIO_PIN_INTC,
config->sio_acpi_mode);
break;
case PCH_DEVFN_SPI1: /* SPI1 */
sio_index = SIO_ID_SPI1;
serialio_d21_ltr(bar0);
serialio_d21_mode(sio_index, SIO_PIN_INTC,
config->sio_acpi_mode);
break;
case PCH_DEVFN_UART0: /* UART0 */
sio_index = SIO_ID_UART0;
if (!serialio_uart_is_debug(dev))
serialio_d21_ltr(bar0);
serialio_d21_mode(sio_index, SIO_PIN_INTD,
config->sio_acpi_mode);
break;
case PCH_DEVFN_UART1: /* UART1 */
sio_index = SIO_ID_UART1;
if (!serialio_uart_is_debug(dev))
serialio_d21_ltr(bar0);
serialio_d21_mode(sio_index, SIO_PIN_INTD,
config->sio_acpi_mode);
break;
case PCH_DEVFN_SDIO: /* SDIO */
sio_index = SIO_ID_SDIO;
serialio_d23_ltr(bar0);
serialio_d23_mode(config->sio_acpi_mode);
break;
default:
return;
}
if (config->sio_acpi_mode) {
global_nvs_t *gnvs;
/* Find ACPI NVS to update BARs */
gnvs = (global_nvs_t *)cbmem_find(CBMEM_ID_ACPI_GNVS);
if (!gnvs) {
printk(BIOS_ERR, "Unable to locate Global NVS\n");
return;
}
/* Save BAR0 and BAR1 to ACPI NVS */
gnvs->dev.bar0[sio_index] = (u32)bar0->base;
gnvs->dev.bar1[sio_index] = (u32)bar1->base;
/* Do not enable UART if it is used as debug port */
if (!serialio_uart_is_debug(dev))
gnvs->dev.enable[sio_index] = 1;
/* Put device in D3hot state via BAR1 */
if (dev->path.pci.devfn != PCH_DEVFN_SDMA)
serialio_enable_d3hot(bar1); /* all but SDMA */
}
}