| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Hou Zhiqiang | 849 | 100.00% | 6 | 100.00% |
| Total | 849 | 6 |
/* SPDX-License-Identifier: GPL-2.0 */ /* * PCIe host controller driver for Mobiveil PCIe Host controller * * Copyright (c) 2018 Mobiveil Inc. * Copyright 2019 NXP * * Author: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in> * Hou Zhiqiang <Zhiqiang.Hou@nxp.com> */ #ifndef _PCIE_MOBIVEIL_H #define _PCIE_MOBIVEIL_H #include <linux/pci.h> #include <linux/irq.h> #include <linux/msi.h> #include "../../pci.h" /* register offsets and bit positions */ /* * translation tables are grouped into windows, each window registers are * grouped into blocks of 4 or 16 registers each */ #define PAB_REG_BLOCK_SIZE 16 #define PAB_EXT_REG_BLOCK_SIZE 4 #define PAB_REG_ADDR(offset, win) \ (offset + (win * PAB_REG_BLOCK_SIZE)) #define PAB_EXT_REG_ADDR(offset, win) \ (offset + (win * PAB_EXT_REG_BLOCK_SIZE)) #define LTSSM_STATUS 0x0404 #define LTSSM_STATUS_L0_MASK 0x3f #define LTSSM_STATUS_L0 0x2d #define PAB_CTRL 0x0808 #define AMBA_PIO_ENABLE_SHIFT 0 #define PEX_PIO_ENABLE_SHIFT 1 #define PAGE_SEL_SHIFT 13 #define PAGE_SEL_MASK 0x3f #define PAGE_LO_MASK 0x3ff #define PAGE_SEL_OFFSET_SHIFT 10 #define PAB_ACTIVITY_STAT 0x81c #define PAB_AXI_PIO_CTRL 0x0840 #define APIO_EN_MASK 0xf #define PAB_PEX_PIO_CTRL 0x08c0 #define PIO_ENABLE_SHIFT 0 #define PAB_INTP_AMBA_MISC_ENB 0x0b0c #define PAB_INTP_AMBA_MISC_STAT 0x0b1c #define PAB_INTP_RESET BIT(1) #define PAB_INTP_MSI BIT(3) #define PAB_INTP_INTA BIT(5) #define PAB_INTP_INTB BIT(6) #define PAB_INTP_INTC BIT(7) #define PAB_INTP_INTD BIT(8) #define PAB_INTP_PCIE_UE BIT(9) #define PAB_INTP_IE_PMREDI BIT(29) #define PAB_INTP_IE_EC BIT(30) #define PAB_INTP_MSI_MASK PAB_INTP_MSI #define PAB_INTP_INTX_MASK (PAB_INTP_INTA | PAB_INTP_INTB |\ PAB_INTP_INTC | PAB_INTP_INTD) #define PAB_AXI_AMAP_CTRL(win) PAB_REG_ADDR(0x0ba0, win) #define WIN_ENABLE_SHIFT 0 #define WIN_TYPE_SHIFT 1 #define WIN_TYPE_MASK 0x3 #define WIN_SIZE_MASK 0xfffffc00 #define PAB_EXT_AXI_AMAP_SIZE(win) PAB_EXT_REG_ADDR(0xbaf0, win) #define PAB_EXT_AXI_AMAP_AXI_WIN(win) PAB_EXT_REG_ADDR(0x80a0, win) #define PAB_AXI_AMAP_AXI_WIN(win) PAB_REG_ADDR(0x0ba4, win) #define AXI_WINDOW_ALIGN_MASK 3 #define PAB_AXI_AMAP_PEX_WIN_L(win) PAB_REG_ADDR(0x0ba8, win) #define PAB_BUS_SHIFT 24 #define PAB_DEVICE_SHIFT 19 #define PAB_FUNCTION_SHIFT 16 #define PAB_AXI_AMAP_PEX_WIN_H(win) PAB_REG_ADDR(0x0bac, win) #define PAB_INTP_AXI_PIO_CLASS 0x474 #define PAB_PEX_AMAP_CTRL(win) PAB_REG_ADDR(0x4ba0, win) #define AMAP_CTRL_EN_SHIFT 0 #define AMAP_CTRL_TYPE_SHIFT 1 #define AMAP_CTRL_TYPE_MASK 3 #define PAB_EXT_PEX_AMAP_SIZEN(win) PAB_EXT_REG_ADDR(0xbef0, win) #define PAB_EXT_PEX_AMAP_AXI_WIN(win) PAB_EXT_REG_ADDR(0xb4a0, win) #define PAB_PEX_AMAP_AXI_WIN(win) PAB_REG_ADDR(0x4ba4, win) #define PAB_PEX_AMAP_PEX_WIN_L(win) PAB_REG_ADDR(0x4ba8, win) #define PAB_PEX_AMAP_PEX_WIN_H(win) PAB_REG_ADDR(0x4bac, win) /* starting offset of INTX bits in status register */ #define PAB_INTX_START 5 /* supported number of MSI interrupts */ #define PCI_NUM_MSI 16 /* MSI registers */ #define MSI_BASE_LO_OFFSET 0x04 #define MSI_BASE_HI_OFFSET 0x08 #define MSI_SIZE_OFFSET 0x0c #define MSI_ENABLE_OFFSET 0x14 #define MSI_STATUS_OFFSET 0x18 #define MSI_DATA_OFFSET 0x20 #define MSI_ADDR_L_OFFSET 0x24 #define MSI_ADDR_H_OFFSET 0x28 /* outbound and inbound window definitions */ #define WIN_NUM_0 0 #define WIN_NUM_1 1 #define CFG_WINDOW_TYPE 0 #define IO_WINDOW_TYPE 1 #define MEM_WINDOW_TYPE 2 #define IB_WIN_SIZE ((u64)256 * 1024 * 1024 * 1024) #define MAX_PIO_WINDOWS 8 /* Parameters for the waiting for link up routine */ #define LINK_WAIT_MAX_RETRIES 10 #define LINK_WAIT_MIN 90000 #define LINK_WAIT_MAX 100000 #define PAGED_ADDR_BNDRY 0xc00 #define OFFSET_TO_PAGE_ADDR(off) \ ((off & PAGE_LO_MASK) | PAGED_ADDR_BNDRY) #define OFFSET_TO_PAGE_IDX(off) \ ((off >> PAGE_SEL_OFFSET_SHIFT) & PAGE_SEL_MASK) struct mobiveil_msi { /* MSI information */ struct mutex lock; /* protect bitmap variable */ struct irq_domain *msi_domain; struct irq_domain *dev_domain; phys_addr_t msi_pages_phys; int num_of_vectors; DECLARE_BITMAP(msi_irq_in_use, PCI_NUM_MSI); }; struct mobiveil_pcie; struct mobiveil_rp_ops { int (*interrupt_init)(struct mobiveil_pcie *pcie); }; struct mobiveil_root_port { char root_bus_nr; void __iomem *config_axi_slave_base; /* endpoint config base */ struct resource *ob_io_res; struct mobiveil_rp_ops *ops; int irq; raw_spinlock_t intx_mask_lock; struct irq_domain *intx_domain; struct mobiveil_msi msi; struct pci_host_bridge *bridge; }; struct mobiveil_pab_ops { int (*link_up)(struct mobiveil_pcie *pcie); }; struct mobiveil_pcie { struct platform_device *pdev; void __iomem *csr_axi_slave_base; /* root port config base */ void __iomem *apb_csr_base; /* MSI register base */ phys_addr_t pcie_reg_base; /* Physical PCIe Controller Base */ int apio_wins; int ppio_wins; int ob_wins_configured; /* configured outbound windows */ int ib_wins_configured; /* configured inbound windows */ const struct mobiveil_pab_ops *ops; struct mobiveil_root_port rp; }; int mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie); int mobiveil_host_init(struct mobiveil_pcie *pcie, bool reinit); bool mobiveil_pcie_link_up(struct mobiveil_pcie *pcie); int mobiveil_bringup_link(struct mobiveil_pcie *pcie); void program_ob_windows(struct mobiveil_pcie *pcie, int win_num, u64 cpu_addr, u64 pci_addr, u32 type, u64 size); void program_ib_windows(struct mobiveil_pcie *pcie, int win_num, u64 cpu_addr, u64 pci_addr, u32 type, u64 size); u32 mobiveil_csr_read(struct mobiveil_pcie *pcie, u32 off, size_t size); void mobiveil_csr_write(struct mobiveil_pcie *pcie, u32 val, u32 off, size_t size); static inline u32 mobiveil_csr_readl(struct mobiveil_pcie *pcie, u32 off) { return mobiveil_csr_read(pcie, off, 0x4); } static inline u16 mobiveil_csr_readw(struct mobiveil_pcie *pcie, u32 off) { return mobiveil_csr_read(pcie, off, 0x2); } static inline u8 mobiveil_csr_readb(struct mobiveil_pcie *pcie, u32 off) { return mobiveil_csr_read(pcie, off, 0x1); } static inline void mobiveil_csr_writel(struct mobiveil_pcie *pcie, u32 val, u32 off) { mobiveil_csr_write(pcie, val, off, 0x4); } static inline void mobiveil_csr_writew(struct mobiveil_pcie *pcie, u16 val, u32 off) { mobiveil_csr_write(pcie, val, off, 0x2); } static inline void mobiveil_csr_writeb(struct mobiveil_pcie *pcie, u8 val, u32 off) { mobiveil_csr_write(pcie, val, off, 0x1); } #endif /* _PCIE_MOBIVEIL_H */
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