mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-21 10:43:06 +00:00
cd93d625fd
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
310 lines
11 KiB
C
310 lines
11 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Cadence PCIe controlloer definitions
|
|
* Adapted from linux kernel driver.
|
|
* Copyright (c) 2017 Cadence
|
|
*
|
|
* Copyright (c) 2019
|
|
* Written by Ramon Fried <ramon.fried@gmail.com>
|
|
*/
|
|
|
|
#ifndef PCIE_CADENCE_H
|
|
#define PCIE_CADENCE_H
|
|
|
|
#include <common.h>
|
|
#include <pci_ep.h>
|
|
#include <asm/io.h>
|
|
#include <linux/bitops.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)
|
|
|
|
#define CDNS_PCIE_EP_MIN_APERTURE 128 /* 128 bytes */
|
|
|
|
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 {
|
|
void __iomem *reg_base;
|
|
u32 max_functions;
|
|
u32 max_regions;
|
|
};
|
|
|
|
/* 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);
|
|
}
|
|
|
|
static inline void cdns_pcie_rp_writel(struct cdns_pcie *pcie,
|
|
u32 reg, u32 value)
|
|
{
|
|
writel(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);
|
|
}
|
|
|
|
#endif /* end of include guard: PCIE_CADENCE_H */
|