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author | Jayachandran C <jchandra@broadcom.com> | 2013-12-21 16:52:13 +0530 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2014-01-24 22:39:46 +0100 |
commit | c24a8a7a99885d5b986f38f6631f69e7794a3e5e (patch) | |
tree | a0d6702fc1c45cba157a5734215c509fa4b216c6 /arch/mips/include | |
parent | 27547abf36af7964b53a8c9265e266df692d4806 (diff) | |
download | op-kernel-dev-c24a8a7a99885d5b986f38f6631f69e7794a3e5e.zip op-kernel-dev-c24a8a7a99885d5b986f38f6631f69e7794a3e5e.tar.gz |
MIPS: Netlogic: Add MSI support for XLP
Add MSI chip and MSIX chip definitions.
For MSI, we map the link interrupt to a MSI link IRQ which will
do a second level of dispatch based on the MSI status register.
The MSI chip definitions use the MSI enable register to enable
and disable the MSI irqs.
For MSI-X, we split the 32 available MSI-X vectors across the
four PCIe links (8 each). These PIC interrupts generate an IRQ
per link which uses a second level dispatch as well.
The MSI-X chip definition uses the standard functions to enable
and disable interrupts.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6270/
Diffstat (limited to 'arch/mips/include')
-rw-r--r-- | arch/mips/include/asm/mach-netlogic/irq.h | 3 | ||||
-rw-r--r-- | arch/mips/include/asm/netlogic/common.h | 6 | ||||
-rw-r--r-- | arch/mips/include/asm/netlogic/xlp-hal/pcibus.h | 33 | ||||
-rw-r--r-- | arch/mips/include/asm/netlogic/xlp-hal/pic.h | 5 | ||||
-rw-r--r-- | arch/mips/include/asm/netlogic/xlp-hal/xlp.h | 24 |
5 files changed, 53 insertions, 18 deletions
diff --git a/arch/mips/include/asm/mach-netlogic/irq.h b/arch/mips/include/asm/mach-netlogic/irq.h index 868ed8a..c0dbd53 100644 --- a/arch/mips/include/asm/mach-netlogic/irq.h +++ b/arch/mips/include/asm/mach-netlogic/irq.h @@ -9,7 +9,8 @@ #define __ASM_NETLOGIC_IRQ_H #include <asm/mach-netlogic/multi-node.h> -#define NR_IRQS (64 * NLM_NR_NODES) +#define NLM_IRQS_PER_NODE 1024 +#define NR_IRQS (NLM_IRQS_PER_NODE * NLM_NR_NODES) #define MIPS_CPU_IRQ_BASE 0 diff --git a/arch/mips/include/asm/netlogic/common.h b/arch/mips/include/asm/netlogic/common.h index bb68c33..e6339d0 100644 --- a/arch/mips/include/asm/netlogic/common.h +++ b/arch/mips/include/asm/netlogic/common.h @@ -112,8 +112,14 @@ struct nlm_soc_info { struct irq_data; uint64_t nlm_pci_irqmask(int node); +void nlm_setup_pic_irq(int node, int picirq, int irq, int irt); void nlm_set_pic_extra_ack(int node, int irq, void (*xack)(struct irq_data *)); +#ifdef CONFIG_PCI_MSI +void nlm_dispatch_msi(int node, int lirq); +void nlm_dispatch_msix(int node, int msixirq); +#endif + /* * The NR_IRQs is divided between nodes, each of them has a separate irq space */ diff --git a/arch/mips/include/asm/netlogic/xlp-hal/pcibus.h b/arch/mips/include/asm/netlogic/xlp-hal/pcibus.h index b559cb9..0fac32b 100644 --- a/arch/mips/include/asm/netlogic/xlp-hal/pcibus.h +++ b/arch/mips/include/asm/netlogic/xlp-hal/pcibus.h @@ -52,25 +52,42 @@ #define PCIE_BYTE_SWAP_MEM_LIM 0x248 #define PCIE_BYTE_SWAP_IO_BASE 0x249 #define PCIE_BYTE_SWAP_IO_LIM 0x24A + +#define PCIE_BRIDGE_MSIX_ADDR_BASE 0x24F +#define PCIE_BRIDGE_MSIX_ADDR_LIMIT 0x250 #define PCIE_MSI_STATUS 0x25A #define PCIE_MSI_EN 0x25B +#define PCIE_MSIX_STATUS 0x25D +#define PCIE_INT_STATUS0 0x25F +#define PCIE_INT_STATUS1 0x260 #define PCIE_INT_EN0 0x261 +#define PCIE_INT_EN1 0x262 -/* PCIE_MSI_EN */ -#define PCIE_MSI_VECTOR_INT_EN 0xFFFFFFFF - -/* PCIE_INT_EN0 */ -#define PCIE_MSI_INT_EN (1 << 9) +/* other */ +#define PCIE_NLINKS 4 +/* MSI addresses */ +#define MSI_ADDR_BASE 0xfffee00000ULL +#define MSI_ADDR_SZ 0x10000 +#define MSI_LINK_ADDR(n, l) (MSI_ADDR_BASE + \ + (PCIE_NLINKS * (n) + (l)) * MSI_ADDR_SZ) +#define MSIX_ADDR_BASE 0xfffef00000ULL +#define MSIX_LINK_ADDR(n, l) (MSIX_ADDR_BASE + \ + (PCIE_NLINKS * (n) + (l)) * MSI_ADDR_SZ) #ifndef __ASSEMBLY__ #define nlm_read_pcie_reg(b, r) nlm_read_reg(b, r) #define nlm_write_pcie_reg(b, r, v) nlm_write_reg(b, r, v) #define nlm_get_pcie_base(node, inst) \ nlm_pcicfg_base(XLP_IO_PCIE_OFFSET(node, inst)) -#define nlm_get_pcie_regbase(node, inst) \ - (nlm_get_pcie_base(node, inst) + XLP_IO_PCI_HDRSZ) -int xlp_pcie_link_irt(int link); +#ifdef CONFIG_PCI_MSI +void xlp_init_node_msi_irqs(int node, int link); +#else +static inline void xlp_init_node_msi_irqs(int node, int link) {} +#endif + +struct pci_dev *xlp_get_pcie_link(const struct pci_dev *dev); + #endif #endif /* __NLM_HAL_PCIBUS_H__ */ diff --git a/arch/mips/include/asm/netlogic/xlp-hal/pic.h b/arch/mips/include/asm/netlogic/xlp-hal/pic.h index 105389b..3fcbe74 100644 --- a/arch/mips/include/asm/netlogic/xlp-hal/pic.h +++ b/arch/mips/include/asm/netlogic/xlp-hal/pic.h @@ -193,14 +193,9 @@ #define PIC_IRT_PCIE_LINK_INDEX(num) ((num) + PIC_IRT_PCIE_LINK_0_INDEX) #define PIC_CLOCK_TIMER 7 -#define PIC_IRQ_BASE 8 #if !defined(LOCORE) && !defined(__ASSEMBLY__) -#define PIC_IRT_FIRST_IRQ (PIC_IRQ_BASE) -#define PIC_IRT_LAST_IRQ 63 -#define PIC_IRQ_IS_IRT(irq) ((irq) >= PIC_IRT_FIRST_IRQ) - /* * Misc */ diff --git a/arch/mips/include/asm/netlogic/xlp-hal/xlp.h b/arch/mips/include/asm/netlogic/xlp-hal/xlp.h index 470f209..e62e7be 100644 --- a/arch/mips/include/asm/netlogic/xlp-hal/xlp.h +++ b/arch/mips/include/asm/netlogic/xlp-hal/xlp.h @@ -37,10 +37,9 @@ #define PIC_UART_0_IRQ 17 #define PIC_UART_1_IRQ 18 -#define PIC_PCIE_LINK_0_IRQ 19 -#define PIC_PCIE_LINK_1_IRQ 20 -#define PIC_PCIE_LINK_2_IRQ 21 -#define PIC_PCIE_LINK_3_IRQ 22 + +#define PIC_PCIE_LINK_LEGACY_IRQ_BASE 19 +#define PIC_PCIE_LINK_LEGACY_IRQ(i) (19 + (i)) #define PIC_EHCI_0_IRQ 23 #define PIC_EHCI_1_IRQ 24 @@ -58,6 +57,23 @@ #define PIC_I2C_2_IRQ 32 #define PIC_I2C_3_IRQ 33 +#define PIC_PCIE_LINK_MSI_IRQ_BASE 44 /* 44 - 47 MSI IRQ */ +#define PIC_PCIE_LINK_MSI_IRQ(i) (44 + (i)) + +/* MSI-X with second link-level dispatch */ +#define PIC_PCIE_MSIX_IRQ_BASE 48 /* 48 - 51 MSI-X IRQ */ +#define PIC_PCIE_MSIX_IRQ(i) (48 + (i)) + +#define NLM_MSIX_VEC_BASE 96 /* 96 - 127 - MSIX mapped */ +#define NLM_MSI_VEC_BASE 128 /* 128 -255 - MSI mapped */ + +#define NLM_PIC_INDIRECT_VEC_BASE 512 +#define NLM_GPIO_VEC_BASE 768 + +#define PIC_IRQ_BASE 8 +#define PIC_IRT_FIRST_IRQ PIC_IRQ_BASE +#define PIC_IRT_LAST_IRQ 63 + #ifndef __ASSEMBLY__ /* SMP support functions */ |