diff options
Diffstat (limited to 'src/soc/intel/common/block/lpc')
| -rw-r--r-- | src/soc/intel/common/block/lpc/lpc_lib.c | 71 |
1 files changed, 70 insertions, 1 deletions
diff --git a/src/soc/intel/common/block/lpc/lpc_lib.c b/src/soc/intel/common/block/lpc/lpc_lib.c index 87ee11056e..d189a5e398 100644 --- a/src/soc/intel/common/block/lpc/lpc_lib.c +++ b/src/soc/intel/common/block/lpc/lpc_lib.c @@ -7,9 +7,11 @@ #include <console/console.h> #include <device/pci.h> #include <device/pci_ops.h> +#include <intelblocks/itss.h> #include <intelblocks/lpc_lib.h> #include <lib.h> #include "lpc_def.h" +#include <soc/irq.h> #include <soc/pci_devs.h> uint16_t lpc_enable_fixed_io_ranges(uint16_t io_enables) @@ -280,7 +282,7 @@ void pch_enable_lpc(void) lpc_set_gen_decode_range(gen_io_dec); soc_setup_dmi_pcr_io_dec(gen_io_dec); if (ENV_PAYLOAD_LOADER) - soc_pch_pirq_init(dev); + pch_pirq_init(); } void lpc_enable_pci_clk_cntl(void) @@ -317,3 +319,70 @@ void pch_enable_ioapic(void) */ io_apic_write((void *)IO_APIC_ADDR, 0x03, 0x01); } + +/* + * 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 pch_pirq_init(void) +{ + const struct device *irq_dev; + uint8_t pch_interrupt_routing[MAX_PXRC_CONFIG]; + + pch_interrupt_routing[0] = PCH_IRQ11; + pch_interrupt_routing[1] = PCH_IRQ10; + pch_interrupt_routing[2] = PCH_IRQ11; + pch_interrupt_routing[3] = PCH_IRQ11; + pch_interrupt_routing[4] = PCH_IRQ11; + pch_interrupt_routing[5] = PCH_IRQ11; + pch_interrupt_routing[6] = PCH_IRQ11; + pch_interrupt_routing[7] = PCH_IRQ11; + + itss_irq_init(pch_interrupt_routing); + + for (irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) { + uint8_t int_pin = 0, int_line = 0; + + if (!irq_dev->enabled || irq_dev->path.type != DEVICE_PATH_PCI) + continue; + + int_pin = pci_read_config8(PCI_BDF(irq_dev), PCI_INTERRUPT_PIN); + + switch (int_pin) { + case 1: /* INTA# */ + int_line = PCH_IRQ11; + break; + case 2: /* INTB# */ + int_line = PCH_IRQ10; + break; + case 3: /* INTC# */ + int_line = PCH_IRQ11; + break; + case 4: /* INTD# */ + int_line = PCH_IRQ11; + break; + } + + if (!int_line) + continue; + + pci_write_config8(PCI_BDF(irq_dev), PCI_INTERRUPT_LINE, int_line); + } +} |