mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-16 01:04:08 +08:00
2a6d0d63d9
Add support for R-Car PCIe controller to work in endpoint mode. Link: https://lore.kernel.org/r/1588854799-13710-8-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
141 lines
3.9 KiB
C
141 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* PCIe driver for Renesas R-Car SoCs
|
|
* Copyright (C) 2014-2020 Renesas Electronics Europe Ltd
|
|
*
|
|
* Author: Phil Edworthy <phil.edworthy@renesas.com>
|
|
*/
|
|
|
|
#ifndef _PCIE_RCAR_H
|
|
#define _PCIE_RCAR_H
|
|
|
|
#define PCIECAR 0x000010
|
|
#define PCIECCTLR 0x000018
|
|
#define CONFIG_SEND_ENABLE BIT(31)
|
|
#define TYPE0 (0 << 8)
|
|
#define TYPE1 BIT(8)
|
|
#define PCIECDR 0x000020
|
|
#define PCIEMSR 0x000028
|
|
#define PCIEINTXR 0x000400
|
|
#define ASTINTX BIT(16)
|
|
#define PCIEPHYSR 0x0007f0
|
|
#define PHYRDY BIT(0)
|
|
#define PCIEMSITXR 0x000840
|
|
|
|
/* Transfer control */
|
|
#define PCIETCTLR 0x02000
|
|
#define DL_DOWN BIT(3)
|
|
#define CFINIT BIT(0)
|
|
#define PCIETSTR 0x02004
|
|
#define DATA_LINK_ACTIVE BIT(0)
|
|
#define PCIEERRFR 0x02020
|
|
#define UNSUPPORTED_REQUEST BIT(4)
|
|
#define PCIEMSIFR 0x02044
|
|
#define PCIEMSIALR 0x02048
|
|
#define MSIFE BIT(0)
|
|
#define PCIEMSIAUR 0x0204c
|
|
#define PCIEMSIIER 0x02050
|
|
|
|
/* root port address */
|
|
#define PCIEPRAR(x) (0x02080 + ((x) * 0x4))
|
|
|
|
/* local address reg & mask */
|
|
#define PCIELAR(x) (0x02200 + ((x) * 0x20))
|
|
#define PCIELAMR(x) (0x02208 + ((x) * 0x20))
|
|
#define LAM_PREFETCH BIT(3)
|
|
#define LAM_64BIT BIT(2)
|
|
#define LAR_ENABLE BIT(1)
|
|
|
|
/* PCIe address reg & mask */
|
|
#define PCIEPALR(x) (0x03400 + ((x) * 0x20))
|
|
#define PCIEPAUR(x) (0x03404 + ((x) * 0x20))
|
|
#define PCIEPAMR(x) (0x03408 + ((x) * 0x20))
|
|
#define PCIEPTCTLR(x) (0x0340c + ((x) * 0x20))
|
|
#define PAR_ENABLE BIT(31)
|
|
#define IO_SPACE BIT(8)
|
|
|
|
/* Configuration */
|
|
#define PCICONF(x) (0x010000 + ((x) * 0x4))
|
|
#define INTDIS BIT(10)
|
|
#define PMCAP(x) (0x010040 + ((x) * 0x4))
|
|
#define MSICAP(x) (0x010050 + ((x) * 0x4))
|
|
#define MSICAP0_MSIE BIT(16)
|
|
#define MSICAP0_MMESCAP_OFFSET 17
|
|
#define MSICAP0_MMESE_OFFSET 20
|
|
#define MSICAP0_MMESE_MASK GENMASK(22, 20)
|
|
#define EXPCAP(x) (0x010070 + ((x) * 0x4))
|
|
#define VCCAP(x) (0x010100 + ((x) * 0x4))
|
|
|
|
/* link layer */
|
|
#define IDSETR0 0x011000
|
|
#define IDSETR1 0x011004
|
|
#define SUBIDSETR 0x011024
|
|
#define TLCTLR 0x011048
|
|
#define MACSR 0x011054
|
|
#define SPCHGFIN BIT(4)
|
|
#define SPCHGFAIL BIT(6)
|
|
#define SPCHGSUC BIT(7)
|
|
#define LINK_SPEED (0xf << 16)
|
|
#define LINK_SPEED_2_5GTS (1 << 16)
|
|
#define LINK_SPEED_5_0GTS (2 << 16)
|
|
#define MACCTLR 0x011058
|
|
#define MACCTLR_NFTS_MASK GENMASK(23, 16) /* The name is from SH7786 */
|
|
#define SPEED_CHANGE BIT(24)
|
|
#define SCRAMBLE_DISABLE BIT(27)
|
|
#define LTSMDIS BIT(31)
|
|
#define MACCTLR_INIT_VAL (LTSMDIS | MACCTLR_NFTS_MASK)
|
|
#define PMSR 0x01105c
|
|
#define MACS2R 0x011078
|
|
#define MACCGSPSETR 0x011084
|
|
#define SPCNGRSN BIT(31)
|
|
|
|
/* R-Car H1 PHY */
|
|
#define H1_PCIEPHYADRR 0x04000c
|
|
#define WRITE_CMD BIT(16)
|
|
#define PHY_ACK BIT(24)
|
|
#define RATE_POS 12
|
|
#define LANE_POS 8
|
|
#define ADR_POS 0
|
|
#define H1_PCIEPHYDOUTR 0x040014
|
|
|
|
/* R-Car Gen2 PHY */
|
|
#define GEN2_PCIEPHYADDR 0x780
|
|
#define GEN2_PCIEPHYDATA 0x784
|
|
#define GEN2_PCIEPHYCTRL 0x78c
|
|
|
|
#define INT_PCI_MSI_NR 32
|
|
|
|
#define RCONF(x) (PCICONF(0) + (x))
|
|
#define RPMCAP(x) (PMCAP(0) + (x))
|
|
#define REXPCAP(x) (EXPCAP(0) + (x))
|
|
#define RVCCAP(x) (VCCAP(0) + (x))
|
|
|
|
#define PCIE_CONF_BUS(b) (((b) & 0xff) << 24)
|
|
#define PCIE_CONF_DEV(d) (((d) & 0x1f) << 19)
|
|
#define PCIE_CONF_FUNC(f) (((f) & 0x7) << 16)
|
|
|
|
#define RCAR_PCI_MAX_RESOURCES 4
|
|
#define MAX_NR_INBOUND_MAPS 6
|
|
|
|
struct rcar_pcie {
|
|
struct device *dev;
|
|
void __iomem *base;
|
|
};
|
|
|
|
enum {
|
|
RCAR_PCI_ACCESS_READ,
|
|
RCAR_PCI_ACCESS_WRITE,
|
|
};
|
|
|
|
void rcar_pci_write_reg(struct rcar_pcie *pcie, u32 val, unsigned int reg);
|
|
u32 rcar_pci_read_reg(struct rcar_pcie *pcie, unsigned int reg);
|
|
void rcar_rmw32(struct rcar_pcie *pcie, int where, u32 mask, u32 data);
|
|
int rcar_pcie_wait_for_phyrdy(struct rcar_pcie *pcie);
|
|
int rcar_pcie_wait_for_dl(struct rcar_pcie *pcie);
|
|
void rcar_pcie_set_outbound(struct rcar_pcie *pcie, int win,
|
|
struct resource_entry *window);
|
|
void rcar_pcie_set_inbound(struct rcar_pcie *pcie, u64 cpu_addr,
|
|
u64 pci_addr, u64 flags, int idx, bool host);
|
|
|
|
#endif
|