| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Cyrille Pitchen | 1059 | 83.19% | 2 | 28.57% |
| Tom Joseph | 151 | 11.86% | 1 | 14.29% |
| Alan Douglas | 62 | 4.87% | 3 | 42.86% |
| Krzysztof Wilczynski | 1 | 0.08% | 1 | 14.29% |
| Total | 1273 | 7 |
/* SPDX-License-Identifier: GPL-2.0 */ // Copyright (c) 2017 Cadence // Cadence PCIe controller driver. // Author: Cyrille Pitchen <cyrille.pitchen@free-electrons.com> #ifndef _PCIE_CADENCE_H #define _PCIE_CADENCE_H #include <linux/kernel.h> #include <linux/pci.h> #include <linux/phy/phy.h> /* * Local Management Registers */ #define CDNS_PCIE_LM_BASE 0x00100000 /* Vendor ID Register */ #define CDNS_PCIE_LM_ID (CDNS_PCIE_LM_BASE + 0x0044) #define CDNS_PCIE_LM_ID_VENDOR_MASK GENMASK(15, 0) #define CDNS_PCIE_LM_ID_VENDOR_SHIFT 0 #define CDNS_PCIE_LM_ID_VENDOR(vid) \ (((vid) << CDNS_PCIE_LM_ID_VENDOR_SHIFT) & CDNS_PCIE_LM_ID_VENDOR_MASK) #define CDNS_PCIE_LM_ID_SUBSYS_MASK GENMASK(31, 16) #define CDNS_PCIE_LM_ID_SUBSYS_SHIFT 16 #define CDNS_PCIE_LM_ID_SUBSYS(sub) \ (((sub) << CDNS_PCIE_LM_ID_SUBSYS_SHIFT) & CDNS_PCIE_LM_ID_SUBSYS_MASK) /* Root Port Requestor ID Register */ #define CDNS_PCIE_LM_RP_RID (CDNS_PCIE_LM_BASE + 0x0228) #define CDNS_PCIE_LM_RP_RID_MASK GENMASK(15, 0) #define CDNS_PCIE_LM_RP_RID_SHIFT 0 #define CDNS_PCIE_LM_RP_RID_(rid) \ (((rid) << CDNS_PCIE_LM_RP_RID_SHIFT) & CDNS_PCIE_LM_RP_RID_MASK) /* Endpoint Bus and Device Number Register */ #define CDNS_PCIE_LM_EP_ID (CDNS_PCIE_LM_BASE + 0x022c) #define CDNS_PCIE_LM_EP_ID_DEV_MASK GENMASK(4, 0) #define CDNS_PCIE_LM_EP_ID_DEV_SHIFT 0 #define CDNS_PCIE_LM_EP_ID_BUS_MASK GENMASK(15, 8) #define CDNS_PCIE_LM_EP_ID_BUS_SHIFT 8 /* Endpoint Function f BAR b Configuration Registers */ #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG0(fn) \ (CDNS_PCIE_LM_BASE + 0x0240 + (fn) * 0x0008) #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG1(fn) \ (CDNS_PCIE_LM_BASE + 0x0244 + (fn) * 0x0008) #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE_MASK(b) \ (GENMASK(4, 0) << ((b) * 8)) #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE(b, a) \ (((a) << ((b) * 8)) & CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE_MASK(b)) #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL_MASK(b) \ (GENMASK(7, 5) << ((b) * 8)) #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL(b, c) \ (((c) << ((b) * 8 + 5)) & CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL_MASK(b)) /* Endpoint Function Configuration Register */ #define CDNS_PCIE_LM_EP_FUNC_CFG (CDNS_PCIE_LM_BASE + 0x02c0) /* Root Complex BAR Configuration Register */ #define CDNS_PCIE_LM_RC_BAR_CFG (CDNS_PCIE_LM_BASE + 0x0300) #define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_APERTURE_MASK GENMASK(5, 0) #define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_APERTURE(a) \ (((a) << 0) & CDNS_PCIE_LM_RC_BAR_CFG_BAR0_APERTURE_MASK) #define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_CTRL_MASK GENMASK(8, 6) #define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_CTRL(c) \ (((c) << 6) & CDNS_PCIE_LM_RC_BAR_CFG_BAR0_CTRL_MASK) #define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_APERTURE_MASK GENMASK(13, 9) #define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_APERTURE(a) \ (((a) << 9) & CDNS_PCIE_LM_RC_BAR_CFG_BAR1_APERTURE_MASK) #define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_CTRL_MASK GENMASK(16, 14) #define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_CTRL(c) \ (((c) << 14) & CDNS_PCIE_LM_RC_BAR_CFG_BAR1_CTRL_MASK) #define CDNS_PCIE_LM_RC_BAR_CFG_PREFETCH_MEM_ENABLE BIT(17) #define CDNS_PCIE_LM_RC_BAR_CFG_PREFETCH_MEM_32BITS 0 #define CDNS_PCIE_LM_RC_BAR_CFG_PREFETCH_MEM_64BITS BIT(18) #define CDNS_PCIE_LM_RC_BAR_CFG_IO_ENABLE BIT(19) #define CDNS_PCIE_LM_RC_BAR_CFG_IO_16BITS 0 #define CDNS_PCIE_LM_RC_BAR_CFG_IO_32BITS BIT(20) #define CDNS_PCIE_LM_RC_BAR_CFG_CHECK_ENABLE BIT(31) /* BAR control values applicable to both Endpoint Function and Root Complex */ #define CDNS_PCIE_LM_BAR_CFG_CTRL_DISABLED 0x0 #define CDNS_PCIE_LM_BAR_CFG_CTRL_IO_32BITS 0x1 #define CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_32BITS 0x4 #define CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_32BITS 0x5 #define CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_64BITS 0x6 #define CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_64BITS 0x7 /* * Endpoint Function Registers (PCI configuration space for endpoint functions) */ #define CDNS_PCIE_EP_FUNC_BASE(fn) (((fn) << 12) & GENMASK(19, 12)) #define CDNS_PCIE_EP_FUNC_MSI_CAP_OFFSET 0x90 /* * Root Port Registers (PCI configuration space for the root port function) */ #define CDNS_PCIE_RP_BASE 0x00200000 /* * Address Translation Registers */ #define CDNS_PCIE_AT_BASE 0x00400000 /* Region r Outbound AXI to PCIe Address Translation Register 0 */ #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0(r) \ (CDNS_PCIE_AT_BASE + 0x0000 + ((r) & 0x1f) * 0x0020) #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS_MASK GENMASK(5, 0) #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS(nbits) \ (((nbits) - 1) & CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS_MASK) #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_DEVFN_MASK GENMASK(19, 12) #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_DEVFN(devfn) \ (((devfn) << 12) & CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_DEVFN_MASK) #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_BUS_MASK GENMASK(27, 20) #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_BUS(bus) \ (((bus) << 20) & CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_BUS_MASK) /* Region r Outbound AXI to PCIe Address Translation Register 1 */ #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR1(r) \ (CDNS_PCIE_AT_BASE + 0x0004 + ((r) & 0x1f) * 0x0020) /* Region r Outbound PCIe Descriptor Register 0 */ #define CDNS_PCIE_AT_OB_REGION_DESC0(r) \ (CDNS_PCIE_AT_BASE + 0x0008 + ((r) & 0x1f) * 0x0020) #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_MASK GENMASK(3, 0) #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_MEM 0x2 #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_IO 0x6 #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_CONF_TYPE0 0xa #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_CONF_TYPE1 0xb #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_NORMAL_MSG 0xc #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_VENDOR_MSG 0xd /* Bit 23 MUST be set in RC mode. */ #define CDNS_PCIE_AT_OB_REGION_DESC0_HARDCODED_RID BIT(23) #define CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN_MASK GENMASK(31, 24) #define CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN(devfn) \ (((devfn) << 24) & CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN_MASK) /* Region r Outbound PCIe Descriptor Register 1 */ #define CDNS_PCIE_AT_OB_REGION_DESC1(r) \ (CDNS_PCIE_AT_BASE + 0x000c + ((r) & 0x1f) * 0x0020) #define CDNS_PCIE_AT_OB_REGION_DESC1_BUS_MASK GENMASK(7, 0) #define CDNS_PCIE_AT_OB_REGION_DESC1_BUS(bus) \ ((bus) & CDNS_PCIE_AT_OB_REGION_DESC1_BUS_MASK) /* Region r AXI Region Base Address Register 0 */ #define CDNS_PCIE_AT_OB_REGION_CPU_ADDR0(r) \ (CDNS_PCIE_AT_BASE + 0x0018 + ((r) & 0x1f) * 0x0020) #define CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS_MASK GENMASK(5, 0) #define CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS(nbits) \ (((nbits) - 1) & CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS_MASK) /* Region r AXI Region Base Address Register 1 */ #define CDNS_PCIE_AT_OB_REGION_CPU_ADDR1(r) \ (CDNS_PCIE_AT_BASE + 0x001c + ((r) & 0x1f) * 0x0020) /* Root Port BAR Inbound PCIe to AXI Address Translation Register */ #define CDNS_PCIE_AT_IB_RP_BAR_ADDR0(bar) \ (CDNS_PCIE_AT_BASE + 0x0800 + (bar) * 0x0008) #define CDNS_PCIE_AT_IB_RP_BAR_ADDR0_NBITS_MASK GENMASK(5, 0) #define CDNS_PCIE_AT_IB_RP_BAR_ADDR0_NBITS(nbits) \ (((nbits) - 1) & CDNS_PCIE_AT_IB_RP_BAR_ADDR0_NBITS_MASK) #define CDNS_PCIE_AT_IB_RP_BAR_ADDR1(bar) \ (CDNS_PCIE_AT_BASE + 0x0804 + (bar) * 0x0008) /* AXI link down register */ #define CDNS_PCIE_AT_LINKDOWN (CDNS_PCIE_AT_BASE + 0x0824) enum cdns_pcie_rp_bar { RP_BAR0, RP_BAR1, RP_NO_BAR }; /* Endpoint Function BAR Inbound PCIe to AXI Address Translation Register */ #define CDNS_PCIE_AT_IB_EP_FUNC_BAR_ADDR0(fn, bar) \ (CDNS_PCIE_AT_BASE + 0x0840 + (fn) * 0x0040 + (bar) * 0x0008) #define CDNS_PCIE_AT_IB_EP_FUNC_BAR_ADDR1(fn, bar) \ (CDNS_PCIE_AT_BASE + 0x0844 + (fn) * 0x0040 + (bar) * 0x0008) /* Normal/Vendor specific message access: offset inside some outbound region */ #define CDNS_PCIE_NORMAL_MSG_ROUTING_MASK GENMASK(7, 5) #define CDNS_PCIE_NORMAL_MSG_ROUTING(route) \ (((route) << 5) & CDNS_PCIE_NORMAL_MSG_ROUTING_MASK) #define CDNS_PCIE_NORMAL_MSG_CODE_MASK GENMASK(15, 8) #define CDNS_PCIE_NORMAL_MSG_CODE(code) \ (((code) << 8) & CDNS_PCIE_NORMAL_MSG_CODE_MASK) #define CDNS_PCIE_MSG_NO_DATA BIT(16) struct cdns_pcie; enum cdns_pcie_msg_code { MSG_CODE_ASSERT_INTA = 0x20, MSG_CODE_ASSERT_INTB = 0x21, MSG_CODE_ASSERT_INTC = 0x22, MSG_CODE_ASSERT_INTD = 0x23, MSG_CODE_DEASSERT_INTA = 0x24, MSG_CODE_DEASSERT_INTB = 0x25, MSG_CODE_DEASSERT_INTC = 0x26, MSG_CODE_DEASSERT_INTD = 0x27, }; enum cdns_pcie_msg_routing { /* Route to Root Complex */ MSG_ROUTING_TO_RC, /* Use Address Routing */ MSG_ROUTING_BY_ADDR, /* Use ID Routing */ MSG_ROUTING_BY_ID, /* Route as Broadcast Message from Root Complex */ MSG_ROUTING_BCAST, /* Local message; terminate at receiver (INTx messages) */ MSG_ROUTING_LOCAL, /* Gather & route to Root Complex (PME_TO_Ack message) */ MSG_ROUTING_GATHER, }; /** * struct cdns_pcie - private data for Cadence PCIe controller drivers * @reg_base: IO mapped register base * @mem_res: start/end offsets in the physical system memory to map PCI accesses * @is_rc: tell whether the PCIe controller mode is Root Complex or Endpoint. * @bus: In Root Complex mode, the bus number */ struct cdns_pcie { void __iomem *reg_base; struct resource *mem_res; struct device *dev; bool is_rc; u8 bus; int phy_count; struct phy **phy; struct device_link **link; const struct cdns_pcie_common_ops *ops; }; /** * struct cdns_pcie_rc - private data for this PCIe Root Complex driver * @pcie: Cadence PCIe controller * @dev: pointer to PCIe device * @cfg_res: start/end offsets in the physical system memory to map PCI * configuration space accesses * @bus_range: first/last buses behind the PCIe host controller * @cfg_base: IO mapped window to access the PCI configuration space of a * single function at a time * @max_regions: maximum number of regions supported by the hardware * @no_bar_nbits: Number of bits to keep for inbound (PCIe -> CPU) address * translation (nbits sets into the "no BAR match" register) * @vendor_id: PCI vendor ID * @device_id: PCI device ID */ struct cdns_pcie_rc { struct cdns_pcie pcie; struct resource *cfg_res; struct resource *bus_range; void __iomem *cfg_base; u32 max_regions; u32 no_bar_nbits; u16 vendor_id; u16 device_id; }; /** * struct cdns_pcie_ep - private data for this PCIe endpoint controller driver * @pcie: Cadence PCIe controller * @max_regions: maximum number of regions supported by hardware * @ob_region_map: bitmask of mapped outbound regions * @ob_addr: base addresses in the AXI bus where the outbound regions start * @irq_phys_addr: base address on the AXI bus where the MSI/legacy IRQ * dedicated outbound regions is mapped. * @irq_cpu_addr: base address in the CPU space where a write access triggers * the sending of a memory write (MSI) / normal message (legacy * IRQ) TLP through the PCIe bus. * @irq_pci_addr: used to save the current mapping of the MSI/legacy IRQ * dedicated outbound region. * @irq_pci_fn: the latest PCI function that has updated the mapping of * the MSI/legacy IRQ dedicated outbound region. * @irq_pending: bitmask of asserted legacy IRQs. */ struct cdns_pcie_ep { struct cdns_pcie pcie; u32 max_regions; unsigned long ob_region_map; phys_addr_t *ob_addr; phys_addr_t irq_phys_addr; void __iomem *irq_cpu_addr; u64 irq_pci_addr; u8 irq_pci_fn; u8 irq_pending; }; /* Register access */ static inline void cdns_pcie_writeb(struct cdns_pcie *pcie, u32 reg, u8 value) { writeb(value, pcie->reg_base + reg); } static inline void cdns_pcie_writew(struct cdns_pcie *pcie, u32 reg, u16 value) { writew(value, pcie->reg_base + reg); } static inline void cdns_pcie_writel(struct cdns_pcie *pcie, u32 reg, u32 value) { writel(value, pcie->reg_base + reg); } static inline u32 cdns_pcie_readl(struct cdns_pcie *pcie, u32 reg) { return readl(pcie->reg_base + reg); } /* Root Port register access */ static inline void cdns_pcie_rp_writeb(struct cdns_pcie *pcie, u32 reg, u8 value) { writeb(value, pcie->reg_base + CDNS_PCIE_RP_BASE + reg); } static inline void cdns_pcie_rp_writew(struct cdns_pcie *pcie, u32 reg, u16 value) { writew(value, pcie->reg_base + CDNS_PCIE_RP_BASE + reg); } /* Endpoint Function register access */ static inline void cdns_pcie_ep_fn_writeb(struct cdns_pcie *pcie, u8 fn, u32 reg, u8 value) { writeb(value, pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); } static inline void cdns_pcie_ep_fn_writew(struct cdns_pcie *pcie, u8 fn, u32 reg, u16 value) { writew(value, pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); } static inline void cdns_pcie_ep_fn_writel(struct cdns_pcie *pcie, u8 fn, u32 reg, u32 value) { writel(value, pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); } static inline u8 cdns_pcie_ep_fn_readb(struct cdns_pcie *pcie, u8 fn, u32 reg) { return readb(pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); } static inline u16 cdns_pcie_ep_fn_readw(struct cdns_pcie *pcie, u8 fn, u32 reg) { return readw(pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); } static inline u32 cdns_pcie_ep_fn_readl(struct cdns_pcie *pcie, u8 fn, u32 reg) { return readl(pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); } #ifdef CONFIG_PCIE_CADENCE_HOST int cdns_pcie_host_setup(struct cdns_pcie_rc *rc); #else static inline int cdns_pcie_host_setup(struct cdns_pcie_rc *rc) { return 0; } #endif #ifdef CONFIG_PCIE_CADENCE_EP int cdns_pcie_ep_setup(struct cdns_pcie_ep *ep); #else static inline int cdns_pcie_ep_setup(struct cdns_pcie_ep *ep) { return 0; } #endif void cdns_pcie_set_outbound_region(struct cdns_pcie *pcie, u8 fn, u32 r, bool is_io, u64 cpu_addr, u64 pci_addr, size_t size); void cdns_pcie_set_outbound_region_for_normal_msg(struct cdns_pcie *pcie, u8 fn, u32 r, u64 cpu_addr); void cdns_pcie_reset_outbound_region(struct cdns_pcie *pcie, u32 r); void cdns_pcie_disable_phy(struct cdns_pcie *pcie); int cdns_pcie_enable_phy(struct cdns_pcie *pcie); int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie); extern const struct dev_pm_ops cdns_pcie_pm_ops; #endif /* _PCIE_CADENCE_H */
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