Implement Intel Queensbay platform-specific PIRQ routing support. The chipset PIRQ routing setup is called in the arch_mist_init().
Signed-off-by: Bin Meng bmeng.cn@gmail.com
---
arch/x86/cpu/queensbay/Makefile | 2 +- arch/x86/cpu/queensbay/irq.c | 236 +++++++++++++++++++++++++++ arch/x86/cpu/queensbay/tnc.c | 10 +- arch/x86/include/asm/arch-queensbay/device.h | 94 +++++++++++ arch/x86/include/asm/arch-queensbay/irq.h | 55 +++++++ arch/x86/include/asm/arch-queensbay/tnc.h | 26 ++- arch/x86/include/asm/u-boot-x86.h | 2 + configs/crownbay_defconfig | 1 + include/configs/crownbay.h | 1 + 9 files changed, 423 insertions(+), 4 deletions(-) create mode 100644 arch/x86/cpu/queensbay/irq.c create mode 100644 arch/x86/include/asm/arch-queensbay/device.h create mode 100644 arch/x86/include/asm/arch-queensbay/irq.h
diff --git a/arch/x86/cpu/queensbay/Makefile b/arch/x86/cpu/queensbay/Makefile index d8761fd..4599a48 100644 --- a/arch/x86/cpu/queensbay/Makefile +++ b/arch/x86/cpu/queensbay/Makefile @@ -5,5 +5,5 @@ #
obj-y += fsp_configs.o -obj-y += tnc.o topcliff.o +obj-y += irq.o tnc.o topcliff.o obj-$(CONFIG_PCI) += tnc_pci.o diff --git a/arch/x86/cpu/queensbay/irq.c b/arch/x86/cpu/queensbay/irq.c new file mode 100644 index 0000000..cf433d3 --- /dev/null +++ b/arch/x86/cpu/queensbay/irq.c @@ -0,0 +1,236 @@ +/* + * Copyright (C) 2015, Bin Meng bmeng.cn@gmail.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <malloc.h> +#include <asm/io.h> +#include <asm/pci.h> +#include <asm/post.h> +#include <asm/processor.h> +#include <asm/pirq_routing.h> +#include <asm/arch/device.h> +#include <asm/arch/tnc.h> +#include <asm/arch/irq.h> + +static struct irq_routing_table *pirq_routing_table; + +bool pirq_check_irq_routed(int link, u8 irq) +{ + u8 pirq; + + pirq = x86_pci_read_config8(TNC_LPC, LINK_N2V(link)); + pirq &= 0xf; + + /* IRQ# 0/1/2/8/13 are reserved */ + if (pirq < 3 || pirq == 8 || pirq == 13) + return false; + + return pirq == irq ? true : false; +} + +int pirq_translate_link(int link) +{ + return LINK_V2N(link); +} + +void pirq_assign_irq(int link, u8 irq) +{ + /* IRQ# 0/1/2/8/13 are reserved */ + if (irq < 3 || irq == 8 || irq == 13) + return; + + x86_pci_write_config8(TNC_LPC, LINK_N2V(link), irq); +} + +static inline void fill_irq_info(struct irq_info **slot, int *entries, u8 bus, + u8 device, u8 func, u8 pin, u8 pirq) +{ + (*slot)->bus = bus; + (*slot)->devfn = (device << 3) | func; + (*slot)->irq[pin - 1].link = LINK_N2V(pirq); + (*slot)->irq[pin - 1].bitmap = PIRQ_BITMAP; + (*entries)++; + (*slot)++; +} + +/* PCIe port downstream INTx swizzle */ +static inline u8 pin_swizzle(u8 pin, int port) +{ + return (pin + port) % 4; +} + +__weak int board_fill_irq_info(struct irq_info *slot) +{ + return 0; +} + +static int create_pirq_routing_table(void) +{ + struct irq_routing_table *rt; + struct irq_info *slot; + int irq_entries = 0; + pci_dev_t tcf_bdf; + u8 tcf_bus, bus; + int i; + + rt = malloc(sizeof(struct irq_routing_table)); + if (!rt) + return -ENOMEM; + memset((char *)rt, 0, sizeof(struct irq_routing_table)); + + /* Populate the PIRQ table fields */ + rt->signature = PIRQ_SIGNATURE; + rt->version = PIRQ_VERSION; + rt->rtr_bus = 0; + rt->rtr_devfn = (TNC_LPC_DEV << 3) | TNC_LPC_FUNC; + rt->rtr_vendor = PCI_VENDOR_ID_INTEL; + rt->rtr_device = PCI_DEVICE_ID_INTEL_ICH7_31; + + slot = rt->slots; + + /* + * Now fill in the irq_info entries in the PIRQ table + * + * We start from internal TunnelCreek PCI devices first, then + * followed by all the 4 PCIe ports downstream devices, including + * the Queensbay platform Topcliff chipset devices. + */ + fill_irq_info(&slot, &irq_entries, 0, TNC_IGD_DEV, + TNC_IGD_FUNC, INTA, PIRQE); + fill_irq_info(&slot, &irq_entries, 0, TNC_SDVO_DEV, + TNC_SDVO_FUNC, INTA, PIRQF); + fill_irq_info(&slot, &irq_entries, 0, TNC_HDA_DEV, + TNC_HDA_FUNC, INTA, PIRQG); + fill_irq_info(&slot, &irq_entries, 0, TNC_PCIE0_DEV, + TNC_PCIE0_FUNC, INTA, PIRQE); + fill_irq_info(&slot, &irq_entries, 0, TNC_PCIE1_DEV, + TNC_PCIE1_FUNC, INTA, PIRQF); + fill_irq_info(&slot, &irq_entries, 0, TNC_PCIE2_DEV, + TNC_PCIE2_FUNC, INTA, PIRQG); + fill_irq_info(&slot, &irq_entries, 0, TNC_PCIE3_DEV, + TNC_PCIE3_FUNC, INTA, PIRQH); + + /* Check which PCIe port the Topcliff chipset is connected to */ + tcf_bdf = pci_find_device(PCI_VENDOR_ID_INTEL, 0x8800, 0); + tcf_bus = PCI_BUS(tcf_bdf); + for (i = 0; i < 4; i++) { + bus = x86_pci_read_config8(PCI_BDF(0, TNC_PCIE0_DEV + i, 0), + PCI_SECONDARY_BUS); + if (bus == tcf_bus) + break; + } + + /* Fill in the Topcliff chipset devices' irq info */ + if (i < 4) { + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_PCIE_PORT_DEV, + TCF_PCIE_PORT_FUNC, INTA, pin_swizzle(PIRQA, i)); + + tcf_bus++; + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_0, + TCF_GBE_FUNC, INTA, pin_swizzle(PIRQA, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_0, + TCF_GPIO_FUNC, INTA, pin_swizzle(PIRQA, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_2, + TCF_USB1_OHCI0_FUNC, INTB, pin_swizzle(PIRQB, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_2, + TCF_USB1_OHCI1_FUNC, INTB, pin_swizzle(PIRQB, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_2, + TCF_USB1_OHCI2_FUNC, INTB, pin_swizzle(PIRQB, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_2, + TCF_USB1_EHCI_FUNC, INTB, pin_swizzle(PIRQB, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_2, + TCF_USB_DEVICE_FUNC, INTB, pin_swizzle(PIRQB, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_4, + TCF_SDIO0_FUNC, INTC, pin_swizzle(PIRQC, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_4, + TCF_SDIO1_FUNC, INTC, pin_swizzle(PIRQC, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_6, + TCF_SATA_FUNC, INTD, pin_swizzle(PIRQD, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_8, + TCF_USB2_OHCI0_FUNC, INTA, pin_swizzle(PIRQA, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_8, + TCF_USB2_OHCI1_FUNC, INTA, pin_swizzle(PIRQA, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_8, + TCF_USB2_OHCI2_FUNC, INTA, pin_swizzle(PIRQA, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_8, + TCF_USB2_EHCI_FUNC, INTA, pin_swizzle(PIRQA, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_10, + TCF_DMA1_FUNC, INTB, pin_swizzle(PIRQB, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_10, + TCF_UART0_FUNC, INTB, pin_swizzle(PIRQB, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_10, + TCF_UART1_FUNC, INTB, pin_swizzle(PIRQB, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_10, + TCF_UART2_FUNC, INTB, pin_swizzle(PIRQB, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_10, + TCF_UART3_FUNC, INTB, pin_swizzle(PIRQB, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_12, + TCF_DMA2_FUNC, INTC, pin_swizzle(PIRQC, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_12, + TCF_SPI_FUNC, INTC, pin_swizzle(PIRQC, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_12, + TCF_I2C_FUNC, INTC, pin_swizzle(PIRQC, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_12, + TCF_CAN_FUNC, INTC, pin_swizzle(PIRQC, i)); + fill_irq_info(&slot, &irq_entries, tcf_bus, TCF_DEV_12, + TCF_1588_FUNC, INTC, pin_swizzle(PIRQC, i)); + } + + /* Call board-specific routine to fill in add-in card's irq info */ + irq_entries += board_fill_irq_info(slot); + + rt->size = irq_entries * sizeof(struct irq_info) + 32; + + pirq_routing_table = rt; + + return 0; +} + +void pirq_init(void) +{ + u32 rcba; + + rcba = x86_pci_read_config32(TNC_LPC, LPC_RCBA); + rcba &= ~MEM_BAR_EN; + + /* Make sure all internal PCI devices are using INTA */ + writel(INTA, rcba + D02IP); + writel(INTA, rcba + D03IP); + writel(INTA, rcba + D27IP); + writel(INTA, rcba + D31IP); + writel(INTA, rcba + D23IP); + writel(INTA, rcba + D24IP); + writel(INTA, rcba + D25IP); + writel(INTA, rcba + D26IP); + + /* + * Route TunnelCreek PCI device interrupt pin to PIRQ + * + * Since PCIe downstream ports received INTx are routed to PIRQ + * A/B/C/D directly and not configurable, we route internal PCI + * device's INTx to PIRQ E/F/G/H. + */ + writew(PIRQE, rcba + D02IR); + writew(PIRQF, rcba + D03IR); + writew(PIRQG, rcba + D27IR); + writew(PIRQH, rcba + D31IR); + writew(PIRQE, rcba + D23IR); + writew(PIRQF, rcba + D24IR); + writew(PIRQG, rcba + D25IR); + writew(PIRQH, rcba + D26IR); + + if (!create_pirq_routing_table()) { + /* Route PIRQ */ + pirq_route_irqs(pirq_routing_table->slots, + get_irq_slot_count(pirq_routing_table)); + } +} + +u32 write_pirq_routing_table(u32 addr) +{ + return copy_pirq_routing_table(addr, pirq_routing_table); +} diff --git a/arch/x86/cpu/queensbay/tnc.c b/arch/x86/cpu/queensbay/tnc.c index f756a0d..b46a7e9 100644 --- a/arch/x86/cpu/queensbay/tnc.c +++ b/arch/x86/cpu/queensbay/tnc.c @@ -8,7 +8,8 @@ #include <asm/io.h> #include <asm/pci.h> #include <asm/post.h> -#include <asm/arch/tnc.h> +#include <asm/arch/device.h> +#include <asm/arch/irq.h> #include <asm/fsp/fsp_support.h> #include <asm/processor.h>
@@ -43,3 +44,10 @@ int arch_cpu_init(void)
return 0; } + +int arch_misc_init(void) +{ + pirq_init(); + + return 0; +} diff --git a/arch/x86/include/asm/arch-queensbay/device.h b/arch/x86/include/asm/arch-queensbay/device.h new file mode 100644 index 0000000..953b48f --- /dev/null +++ b/arch/x86/include/asm/arch-queensbay/device.h @@ -0,0 +1,94 @@ +/* + * Copyright (C) 2015, Bin Meng bmeng.cn@gmail.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _QUEENSBAY_DEVICE_H_ +#define _QUEENSBAY_DEVICE_H_ + +#include <pci.h> + +/* TunnelCreek PCI Devices */ +#define TNC_HOST_BRIDGE_DEV 0 +#define TNC_HOST_BRIDGE_FUNC 0 +#define TNC_IGD_DEV 2 +#define TNC_IGD_FUNC 0 +#define TNC_SDVO_DEV 3 +#define TNC_SDVO_FUNC 0 +#define TNC_PCIE0_DEV 23 +#define TNC_PCIE0_FUNC 0 +#define TNC_PCIE1_DEV 24 +#define TNC_PCIE1_FUNC 0 +#define TNC_PCIE2_DEV 25 +#define TNC_PCIE2_FUNC 0 +#define TNC_PCIE3_DEV 26 +#define TNC_PCIE3_FUNC 0 +#define TNC_HDA_DEV 27 +#define TNC_HDA_FUNC 0 +#define TNC_LPC_DEV 31 +#define TNC_LPC_FUNC 0 + +#define TNC_HOST_BRIDGE \ + PCI_BDF(0, TNC_HOST_BRIDGE_DEV, TNC_HOST_BRIDGE_FUNC) +#define TNC_IGD \ + PCI_BDF(0, TNC_IGD_DEV, TNC_IGD_FUNC) +#define TNC_SDVO \ + PCI_BDF(0, TNC_SDVO_DEV, TNC_SDVO_FUNC) +#define TNC_PCIE0 \ + PCI_BDF(0, TNC_PCIE0_DEV, TNC_PCIE0_FUNC) +#define TNC_PCIE1 \ + PCI_BDF(0, TNC_PCIE1_DEV, TNC_PCIE1_FUNC) +#define TNC_PCIE2 \ + PCI_BDF(0, TNC_PCIE2_DEV, TNC_PCIE2_FUNC) +#define TNC_PCIE3 \ + PCI_BDF(0, TNC_PCIE3_DEV, TNC_PCIE3_FUNC) +#define TNC_HDA \ + PCI_BDF(0, TNC_HDA_DEV, TNC_HDA_FUNC) +#define TNC_LPC \ + PCI_BDF(0, TNC_LPC_DEV, TNC_LPC_FUNC) + +/* Topcliff IOH PCI Devices */ +#define TCF_PCIE_PORT_DEV 0 +#define TCF_PCIE_PORT_FUNC 0 + +#define TCF_DEV_0 0 +#define TCF_PKT_HUB_FUNC 0 +#define TCF_GBE_FUNC 1 +#define TCF_GPIO_FUNC 2 + +#define TCF_DEV_2 2 +#define TCF_USB1_OHCI0_FUNC 0 +#define TCF_USB1_OHCI1_FUNC 1 +#define TCF_USB1_OHCI2_FUNC 2 +#define TCF_USB1_EHCI_FUNC 3 +#define TCF_USB_DEVICE_FUNC 4 + +#define TCF_DEV_4 4 +#define TCF_SDIO0_FUNC 0 +#define TCF_SDIO1_FUNC 1 + +#define TCF_DEV_6 6 +#define TCF_SATA_FUNC 0 + +#define TCF_DEV_8 8 +#define TCF_USB2_OHCI0_FUNC 0 +#define TCF_USB2_OHCI1_FUNC 1 +#define TCF_USB2_OHCI2_FUNC 2 +#define TCF_USB2_EHCI_FUNC 3 + +#define TCF_DEV_10 10 +#define TCF_DMA1_FUNC 0 +#define TCF_UART0_FUNC 1 +#define TCF_UART1_FUNC 2 +#define TCF_UART2_FUNC 3 +#define TCF_UART3_FUNC 4 + +#define TCF_DEV_12 12 +#define TCF_DMA2_FUNC 0 +#define TCF_SPI_FUNC 1 +#define TCF_I2C_FUNC 2 +#define TCF_CAN_FUNC 3 +#define TCF_1588_FUNC 4 + +#endif /* _QUEENSBAY_DEVICE_H_ */ diff --git a/arch/x86/include/asm/arch-queensbay/irq.h b/arch/x86/include/asm/arch-queensbay/irq.h new file mode 100644 index 0000000..e7f8616 --- /dev/null +++ b/arch/x86/include/asm/arch-queensbay/irq.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2015, Bin Meng bmeng.cn@gmail.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _ARCH_IRQ_H_ +#define _ARCH_IRQ_H_ + +enum pci_int_pin { + INTX, + INTA, + INTB, + INTC, + INTD +}; + +enum pirq_pin { + PIRQA, + PIRQB, + PIRQC, + PIRQD, + PIRQE, + PIRQF, + PIRQG, + PIRQH +}; + +/* PIRQ link number and value conversion */ +#define LINK_V2N(link) (link - 0x60) +#define LINK_N2V(link) (link + 0x60) + +#define PIRQ_BITMAP 0xdee0 + +struct irq_info; + +/** + * board_fill_irq_info() - Board-specific irq_info fill routine + * + * This fills the irq_info table for any board-specific add-in cards. + * + * @slot: pointer to the struct irq_info that is to be filled in + * @return: number of entries were written to the struct irq_info + */ +int board_fill_irq_info(struct irq_info *slot); + +/** + * pirq_init() - Initialize platform PIRQ routing + * + * This initializes the PIRQ routing on the platform and configures all PCI + * devices' interrupt line register to a working IRQ number on the 8259 PIC. + */ +void pirq_init(void); + +#endif /* _ARCH_IRQ_H_ */ diff --git a/arch/x86/include/asm/arch-queensbay/tnc.h b/arch/x86/include/asm/arch-queensbay/tnc.h index 10ea51d..2535fe8 100644 --- a/arch/x86/include/asm/arch-queensbay/tnc.h +++ b/arch/x86/include/asm/arch-queensbay/tnc.h @@ -7,8 +7,30 @@ #ifndef _X86_ARCH_TNC_H_ #define _X86_ARCH_TNC_H_
-#include <pci.h> +/* Memory BAR Enable */ +#define MEM_BAR_EN 0x00000001
-#define TNC_LPC PCI_BDF(0, 31, 0) +/* LPC PCI Configuration Registers */ +#define LPC_RCBA 0xf0 + +/* Interupt Pin Configuration (in RCBA) */ +#define D02IP 0x3118 +#define D03IP 0x3130 +#define D23IP 0x312c +#define D24IP 0x3128 +#define D25IP 0x3124 +#define D26IP 0x3120 +#define D27IP 0x3110 +#define D31IP 0x3100 + +/* Interupt Route Configuration (in RCBA) */ +#define D02IR 0x3160 +#define D03IR 0x3162 +#define D23IR 0x3150 +#define D24IR 0x314e +#define D25IR 0x314c +#define D26IR 0x314a +#define D27IR 0x3148 +#define D31IR 0x3140
#endif /* _X86_ARCH_TNC_H_ */ diff --git a/arch/x86/include/asm/u-boot-x86.h b/arch/x86/include/asm/u-boot-x86.h index c743efd..122e054 100644 --- a/arch/x86/include/asm/u-boot-x86.h +++ b/arch/x86/include/asm/u-boot-x86.h @@ -53,6 +53,8 @@ int video_bios_init(void); void board_init_f_r_trampoline(ulong) __attribute__ ((noreturn)); void board_init_f_r(void) __attribute__ ((noreturn));
+int arch_misc_init(void); + /* Read the time stamp counter */ static inline __attribute__((no_instrument_function)) uint64_t rdtsc(void) { diff --git a/configs/crownbay_defconfig b/configs/crownbay_defconfig index ce90553..47763f9 100644 --- a/configs/crownbay_defconfig +++ b/configs/crownbay_defconfig @@ -4,3 +4,4 @@ CONFIG_TARGET_CROWNBAY=y CONFIG_OF_CONTROL=y CONFIG_OF_SEPARATE=y CONFIG_DEFAULT_DEVICE_TREE="crownbay" +CONFIG_GENERATE_PIRQ_TABLE=y diff --git a/include/configs/crownbay.h b/include/configs/crownbay.h index 42042d1..4fef433 100644 --- a/include/configs/crownbay.h +++ b/include/configs/crownbay.h @@ -15,6 +15,7 @@
#define CONFIG_SYS_MONITOR_LEN (1 << 20) #define CONFIG_BOARD_EARLY_INIT_F +#define CONFIG_ARCH_MISC_INIT
#define CONFIG_NR_DRAM_BANKS 1