diff options
Diffstat (limited to 'src/soc/intel/skylake/irq.c')
| -rw-r--r-- | src/soc/intel/skylake/irq.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/irq.c b/src/soc/intel/skylake/irq.c index 649f1375cb..d5778960c0 100644 --- a/src/soc/intel/skylake/irq.c +++ b/src/soc/intel/skylake/irq.c @@ -15,6 +15,8 @@ #include <device/device.h> #include <device/pci.h> +#include <intelblocks/lpc_lib.h> +#include <intelblocks/itss.h> #include <soc/ramstage.h> #include <soc/interrupt.h> #include <soc/irq.h> @@ -267,3 +269,72 @@ void soc_irq_settings(FSP_SIL_UPD *params) /* TCO Irq enable/disable */ params->TcoIrqEnable = config->TcoIrqEnable; } + +/* + * PIRQ[n]_ROUT[3:0] - PIRQ Routing Control + * 0x00 - 0000 = Reserved + * 0x01 - 0001 = Reserved + * 0x02 - 0010 = Reserved + * 0x03 - 0011 = IRQ3 + * 0x04 - 0100 = IRQ4 + * 0x05 - 0101 = IRQ5 + * 0x06 - 0110 = IRQ6 + * 0x07 - 0111 = IRQ7 + * 0x08 - 1000 = Reserved + * 0x09 - 1001 = IRQ9 + * 0x0A - 1010 = IRQ10 + * 0x0B - 1011 = IRQ11 + * 0x0C - 1100 = IRQ12 + * 0x0D - 1101 = Reserved + * 0x0E - 1110 = IRQ14 + * 0x0F - 1111 = IRQ15 + * PIRQ[n]_ROUT[7] - PIRQ Routing Control + * 0x80 - The PIRQ is not routed. + */ + +void soc_pch_pirq_init(const struct device *dev) +{ + const config_t *config = dev->chip_info; + uint8_t pch_interrupt_routing[MAX_PXRC_CONFIG]; + device_t irq_dev; + + pch_interrupt_routing[0] = config->pirqa_routing; + pch_interrupt_routing[1] = config->pirqb_routing; + pch_interrupt_routing[2] = config->pirqc_routing; + pch_interrupt_routing[3] = config->pirqd_routing; + pch_interrupt_routing[4] = config->pirqe_routing; + pch_interrupt_routing[5] = config->pirqf_routing; + pch_interrupt_routing[6] = config->pirqg_routing; + pch_interrupt_routing[7] = config->pirqh_routing; + + itss_irq_init(pch_interrupt_routing); + + for (irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) { + u8 int_pin = 0, int_line = 0; + + if (!irq_dev->enabled || irq_dev->path.type != DEVICE_PATH_PCI) + continue; + + int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN); + + switch (int_pin) { + case 1: /* INTA# */ + int_line = config->pirqa_routing; + break; + case 2: /* INTB# */ + int_line = config->pirqb_routing; + break; + case 3: /* INTC# */ + int_line = config->pirqc_routing; + break; + case 4: /* INTD# */ + int_line = config->pirqd_routing; + break; + } + + if (!int_line) + continue; + + pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, int_line); + } +} |