| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Cyrille Pitchen | 1127 | 57.65% | 2 | 7.14% |
| Kishon Vijay Abraham I | 582 | 29.77% | 10 | 35.71% |
| Tom Joseph | 78 | 3.99% | 1 | 3.57% |
| Alan Douglas | 77 | 3.94% | 4 | 14.29% |
| Nadeem Athani | 48 | 2.46% | 2 | 7.14% |
| Jasko-EXT Wojciech | 12 | 0.61% | 1 | 3.57% |
| Parshuram Thombare | 10 | 0.51% | 1 | 3.57% |
| Christian Gmeiner | 9 | 0.46% | 1 | 3.57% |
| Rob Herring | 6 | 0.31% | 1 | 3.57% |
| Krzysztof Wilczynski | 3 | 0.15% | 3 | 10.71% |
| Damien Le Moal | 2 | 0.10% | 1 | 3.57% |
| Björn Helgaas | 1 | 0.05% | 1 | 3.57% |
| Total | 1955 | 28 |
/* 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/pci-epf.h> #include <linux/phy/phy.h> /* Parameters for the waiting for link up routine */ #define LINK_WAIT_MAX_RETRIES 10 #define LINK_WAIT_USLEEP_MIN 90000 #define LINK_WAIT_USLEEP_MAX 100000 /* * 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 Requester 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_CFG(bar, fn) \ (((bar) < BAR_4) ? CDNS_PCIE_LM_EP_FUNC_BAR_CFG0(fn) : CDNS_PCIE_LM_EP_FUNC_BAR_CFG1(fn)) #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_VFUNC_BAR_CFG(bar, fn) \ (((bar) < BAR_4) ? CDNS_PCIE_LM_EP_VFUNC_BAR_CFG0(fn) : CDNS_PCIE_LM_EP_VFUNC_BAR_CFG1(fn)) #define CDNS_PCIE_LM_EP_VFUNC_BAR_CFG0(fn) \ (CDNS_PCIE_LM_BASE + 0x0280 + (fn) * 0x0008) #define CDNS_PCIE_LM_EP_VFUNC_BAR_CFG1(fn) \ (CDNS_PCIE_LM_BASE + 0x0284 + (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 #define LM_RC_BAR_CFG_CTRL_DISABLED(bar) \ (CDNS_PCIE_LM_BAR_CFG_CTRL_DISABLED << (((bar) * 8) + 6)) #define LM_RC_BAR_CFG_CTRL_IO_32BITS(bar) \ (CDNS_PCIE_LM_BAR_CFG_CTRL_IO_32BITS << (((bar) * 8) + 6)) #define LM_RC_BAR_CFG_CTRL_MEM_32BITS(bar) \ (CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_32BITS << (((bar) * 8) + 6)) #define LM_RC_BAR_CFG_CTRL_PREF_MEM_32BITS(bar) \ (CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_32BITS << (((bar) * 8) + 6)) #define LM_RC_BAR_CFG_CTRL_MEM_64BITS(bar) \ (CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_64BITS << (((bar) * 8) + 6)) #define LM_RC_BAR_CFG_CTRL_PREF_MEM_64BITS(bar) \ (CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_64BITS << (((bar) * 8) + 6)) #define LM_RC_BAR_CFG_APERTURE(bar, aperture) \ (((aperture) - 2) << ((bar) * 8)) /* PTM Control Register */ #define CDNS_PCIE_LM_PTM_CTRL (CDNS_PCIE_LM_BASE + 0x0da8) #define CDNS_PCIE_LM_TPM_CTRL_PTMRSEN BIT(17) /* * 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 #define CDNS_PCIE_EP_FUNC_MSIX_CAP_OFFSET 0xb0 #define CDNS_PCIE_EP_FUNC_DEV_CAP_OFFSET 0xc0 #define CDNS_PCIE_EP_FUNC_SRIOV_CAP_OFFSET 0x200 /* * Endpoint PF Registers */ #define CDNS_PCIE_CORE_PF_I_ARI_CAP_AND_CTRL(fn) (0x144 + (fn) * 0x1000) #define CDNS_PCIE_ARI_CAP_NFN_MASK GENMASK(15, 8) /* * Root Port Registers (PCI configuration space for the root port function) */ #define CDNS_PCIE_RP_BASE 0x00200000 #define CDNS_PCIE_RP_CAP_OFFSET 0xc0 /* * 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) /* LTSSM Capabilities register */ #define CDNS_PCIE_LTSSM_CONTROL_CAP (CDNS_PCIE_LM_BASE + 0x0054) #define CDNS_PCIE_DETECT_QUIET_MIN_DELAY_MASK GENMASK(2, 1) #define CDNS_PCIE_DETECT_QUIET_MIN_DELAY_SHIFT 1 #define CDNS_PCIE_DETECT_QUIET_MIN_DELAY(delay) \ (((delay) << CDNS_PCIE_DETECT_QUIET_MIN_DELAY_SHIFT) & \ CDNS_PCIE_DETECT_QUIET_MIN_DELAY_MASK) enum cdns_pcie_rp_bar { RP_BAR_UNDEFINED = -1, RP_BAR0, RP_BAR1, RP_NO_BAR }; #define CDNS_PCIE_RP_MAX_IB 0x3 #define CDNS_PCIE_MAX_OB 32 struct cdns_pcie_rp_ib_bar { u64 size; bool free; }; /* 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_ops { int (*start_link)(struct cdns_pcie *pcie); void (*stop_link)(struct cdns_pcie *pcie); bool (*link_up)(struct cdns_pcie *pcie); u64 (*cpu_addr_fixup)(struct cdns_pcie *pcie, u64 cpu_addr); }; /** * 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 * @dev: PCIe controller * @is_rc: tell whether the PCIe controller mode is Root Complex or Endpoint. * @phy_count: number of supported PHY devices * @phy: list of pointers to specific PHY control blocks * @link: list of pointers to corresponding device link representations * @ops: Platform-specific ops to control various inputs from Cadence PCIe * wrapper */ struct cdns_pcie { void __iomem *reg_base; struct resource *mem_res; struct device *dev; bool is_rc; int phy_count; struct phy **phy; struct device_link **link; const struct cdns_pcie_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 * @cfg_base: IO mapped window to access the PCI configuration space of a * single function at a time * @vendor_id: PCI vendor ID * @device_id: PCI device ID * @avail_ib_bar: Status of RP_BAR0, RP_BAR1 and RP_NO_BAR if it's free or * available * @quirk_retrain_flag: Retrain link as quirk for PCIe Gen2 * @quirk_detect_quiet_flag: LTSSM Detect Quiet min delay set as quirk */ struct cdns_pcie_rc { struct cdns_pcie pcie; struct resource *cfg_res; void __iomem *cfg_base; u32 vendor_id; u32 device_id; bool avail_ib_bar[CDNS_PCIE_RP_MAX_IB]; unsigned int quirk_retrain_flag:1; unsigned int quirk_detect_quiet_flag:1; }; /** * struct cdns_pcie_epf - Structure to hold info about endpoint function * @epf: Info about virtual functions attached to the physical function * @epf_bar: reference to the pci_epf_bar for the six Base Address Registers */ struct cdns_pcie_epf { struct cdns_pcie_epf *epf; struct pci_epf_bar *epf_bar[PCI_STD_NUM_BARS]; }; /** * 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/INTX 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 (INTX * IRQ) TLP through the PCIe bus. * @irq_pci_addr: used to save the current mapping of the MSI/INTX IRQ * dedicated outbound region. * @irq_pci_fn: the latest PCI function that has updated the mapping of * the MSI/INTX IRQ dedicated outbound region. * @irq_pending: bitmask of asserted INTX IRQs. * @lock: spin lock to disable interrupts while modifying PCIe controller * registers fields (RMW) accessible by both remote RC and EP to * minimize time between read and write * @epf: Structure to hold info about endpoint function * @quirk_detect_quiet_flag: LTSSM Detect Quiet min delay set as quirk * @quirk_disable_flr: Disable FLR (Function Level Reset) quirk flag */ 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; /* protect writing to PCI_STATUS while raising INTX interrupts */ spinlock_t lock; struct cdns_pcie_epf *epf; unsigned int quirk_detect_quiet_flag:1; unsigned int quirk_disable_flr:1; }; /* Register access */ 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); } static inline u32 cdns_pcie_read_sz(void __iomem *addr, int size) { void __iomem *aligned_addr = PTR_ALIGN_DOWN(addr, 0x4); unsigned int offset = (unsigned long)addr & 0x3; u32 val = readl(aligned_addr); if (!IS_ALIGNED((uintptr_t)addr, size)) { pr_warn("Address %p and size %d are not aligned\n", addr, size); return 0; } if (size > 2) return val; return (val >> (8 * offset)) & ((1 << (size * 8)) - 1); } static inline void cdns_pcie_write_sz(void __iomem *addr, int size, u32 value) { void __iomem *aligned_addr = PTR_ALIGN_DOWN(addr, 0x4); unsigned int offset = (unsigned long)addr & 0x3; u32 mask; u32 val; if (!IS_ALIGNED((uintptr_t)addr, size)) { pr_warn("Address %p and size %d are not aligned\n", addr, size); return; } if (size > 2) { writel(value, addr); return; } mask = ~(((1 << (size * 8)) - 1) << (offset * 8)); val = readl(aligned_addr) & mask; val |= value << (offset * 8); writel(val, aligned_addr); } /* Root Port register access */ static inline void cdns_pcie_rp_writeb(struct cdns_pcie *pcie, u32 reg, u8 value) { void __iomem *addr = pcie->reg_base + CDNS_PCIE_RP_BASE + reg; cdns_pcie_write_sz(addr, 0x1, value); } static inline void cdns_pcie_rp_writew(struct cdns_pcie *pcie, u32 reg, u16 value) { void __iomem *addr = pcie->reg_base + CDNS_PCIE_RP_BASE + reg; cdns_pcie_write_sz(addr, 0x2, value); } static inline u16 cdns_pcie_rp_readw(struct cdns_pcie *pcie, u32 reg) { void __iomem *addr = pcie->reg_base + CDNS_PCIE_RP_BASE + reg; return cdns_pcie_read_sz(addr, 0x2); } /* Endpoint Function register access */ static inline void cdns_pcie_ep_fn_writeb(struct cdns_pcie *pcie, u8 fn, u32 reg, u8 value) { void __iomem *addr = pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg; cdns_pcie_write_sz(addr, 0x1, value); } static inline void cdns_pcie_ep_fn_writew(struct cdns_pcie *pcie, u8 fn, u32 reg, u16 value) { void __iomem *addr = pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg; cdns_pcie_write_sz(addr, 0x2, value); } 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 u16 cdns_pcie_ep_fn_readw(struct cdns_pcie *pcie, u8 fn, u32 reg) { void __iomem *addr = pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg; return cdns_pcie_read_sz(addr, 0x2); } 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); } static inline int cdns_pcie_start_link(struct cdns_pcie *pcie) { if (pcie->ops->start_link) return pcie->ops->start_link(pcie); return 0; } static inline void cdns_pcie_stop_link(struct cdns_pcie *pcie) { if (pcie->ops->stop_link) pcie->ops->stop_link(pcie); } static inline bool cdns_pcie_link_up(struct cdns_pcie *pcie) { if (pcie->ops->link_up) return pcie->ops->link_up(pcie); return true; } #ifdef CONFIG_PCIE_CADENCE_HOST int cdns_pcie_host_setup(struct cdns_pcie_rc *rc); void __iomem *cdns_pci_map_bus(struct pci_bus *bus, unsigned int devfn, int where); #else static inline int cdns_pcie_host_setup(struct cdns_pcie_rc *rc) { return 0; } static inline void __iomem *cdns_pci_map_bus(struct pci_bus *bus, unsigned int devfn, int where) { return NULL; } #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_detect_quiet_min_delay_set(struct cdns_pcie *pcie); void cdns_pcie_set_outbound_region(struct cdns_pcie *pcie, u8 busnr, 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 busnr, 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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