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/*
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _QUARK_H_
#define _QUARK_H_
/* Message Bus Ports */
#define MSG_PORT_MEM_ARBITER 0x00
#define MSG_PORT_HOST_BRIDGE 0x03
#define MSG_PORT_RMU 0x04
#define MSG_PORT_MEM_MGR 0x05
#define MSG_PORT_PCIE_AFE 0x16
#define MSG_PORT_SOC_UNIT 0x31
/* Port 0x00: Memory Arbiter Message Port Registers */
/* Enhanced Configuration Space */
#define AEC_CTRL 0x00
/* Port 0x03: Host Bridge Message Port Registers */
/* Host Miscellaneous Controls 2 */
#define HMISC2 0x03
#define HMISC2_SEGE 0x00000002
#define HMISC2_SEGF 0x00000004
#define HMISC2_SEGAB 0x00000010
/* Host Memory I/O Boundary */
#define HM_BOUND 0x08
/* Extended Configuration Space */
#define HEC_REG 0x09
/* Port 0x04: Remote Management Unit Message Port Registers */
/* ACPI PBLK Base Address Register */
#define PBLK_BA 0x70
/* SPI DMA Base Address Register */
#define SPI_DMA_BA 0x7a
/* Port 0x05: Memory Manager Message Port Registers */
/* eSRAM Block Page Control */
#define ESRAM_BLK_CTRL 0x82
#define ESRAM_BLOCK_MODE 0x10000000
/* Port 0x16: PCIe AFE Unit Port Registers */
#define PCIE_RXPICTRL0_L0 0x2080
#define PCIE_RXPICTRL0_L1 0x2180
/* Port 0x31: SoC Unit Port Registers */
/* PCIe Controller Config */
#define PCIE_CFG 0x36
#define PCIE_CTLR_PRI_RST 0x00010000
#define PCIE_PHY_SB_RST 0x00020000
#define PCIE_CTLR_SB_RST 0x00040000
#define PCIE_PHY_LANE_RST 0x00090000
#define PCIE_CTLR_MAIN_RST 0x00100000
/* DRAM */
#define DRAM_BASE 0x00000000
#define DRAM_MAX_SIZE 0x80000000
/* eSRAM */
#define ESRAM_SIZE 0x80000
/* Memory BAR Enable */
#define MEM_BAR_EN 0x00000001
/* I/O BAR Enable */
#define IO_BAR_EN 0x80000000
/* 64KiB of RMU binary in flash */
#define RMU_BINARY_SIZE 0x10000
/* Legacy Bridge PCI Configuration Registers */
#define LB_GBA 0x44
#define LB_PM1BLK 0x48
#define LB_GPE0BLK 0x4c
#define LB_ACTL 0x58
#define LB_PABCDRC 0x60
#define LB_PEFGHRC 0x64
#define LB_WDTBA 0x84
#define LB_BCE 0xd4
#define LB_BC 0xd8
#define LB_RCBA 0xf0
#ifndef __ASSEMBLY__
/* Root Complex Register Block */
struct quark_rcba {
u32 rctl;
u32 esd;
u32 rsvd1[3150];
u16 rmu_ir;
u16 d23_ir;
u16 core_ir;
u16 d20d21_ir;
};
#include <asm/io.h>
#include <asm/pci.h>
/**
* qrk_pci_read_config_dword() - Read a configuration value
*
* @dev: PCI device address: bus, device and function
* @offset: Dword offset within the device's configuration space
* @valuep: Place to put the returned value
*
* Note: This routine is inlined to provide better performance on Quark
*/
static inline void qrk_pci_read_config_dword(pci_dev_t dev, int offset,
u32 *valuep)
{
outl(dev | offset | PCI_CFG_EN, PCI_REG_ADDR);
*valuep = inl(PCI_REG_DATA);
}
/**
* qrk_pci_write_config_dword() - Write a PCI configuration value
*
* @dev: PCI device address: bus, device and function
* @offset: Dword offset within the device's configuration space
* @value: Value to write
*
* Note: This routine is inlined to provide better performance on Quark
*/
static inline void qrk_pci_write_config_dword(pci_dev_t dev, int offset,
u32 value)
{
outl(dev | offset | PCI_CFG_EN, PCI_REG_ADDR);
outl(value, PCI_REG_DATA);
}
/**
* board_assert_perst() - Assert the PERST# pin
*
* The CPU interface to the PERST# signal on Quark is platform dependent.
* Board-specific codes need supply this routine to assert PCIe slot reset.
*
* The tricky part in this routine is that any APIs that may trigger PCI
* enumeration process are strictly forbidden, as any access to PCIe root
* port's configuration registers will cause system hang while it is held
* in reset.
*/
void board_assert_perst(void);
/**
* board_deassert_perst() - De-assert the PERST# pin
*
* The CPU interface to the PERST# signal on Quark is platform dependent.
* Board-specific codes need supply this routine to de-assert PCIe slot reset.
*
* The tricky part in this routine is that any APIs that may trigger PCI
* enumeration process are strictly forbidden, as any access to PCIe root
* port's configuration registers will cause system hang while it is held
* in reset.
*/
void board_deassert_perst(void);
#endif /* __ASSEMBLY__ */
#endif /* _QUARK_H_ */
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