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/*
* IXP PCI Init
* (C) Copyright 2004 eslab.whut.edu.cn
* Yue Hu(huyue_whut@yahoo.com.cn), Ligong Xue(lgxue@hotmail.com)
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef _IXP425PCI_H_
#define _IXP425PCI_H_
#define TRUE 1
#define FALSE 0
#define OK 0
#define ERROR -1
#define BOOL int
#define IXP425_PCI_MAX_BAR_PER_FUNC 6
#define IXP425_PCI_MAX_BAR (IXP425_PCI_MAX_BAR_PER_FUNC * \
IXP425_PCI_MAX_FUNC_ON_BUS)
enum PciBarId
{
CSR_BAR=0,
IO_BAR,
SD_BAR,
NO_BAR
};
/*Base address register descriptor*/
typedef struct
{
unsigned int size;
unsigned int address;
} PciBar;
typedef struct
{
unsigned int bus;
unsigned int device;
unsigned int func;
unsigned int irq;
BOOL error;
unsigned short vendor_id;
unsigned short device_id;
/*We need an extra entry in this array for dummy placeholder*/
PciBar bar[IXP425_PCI_MAX_BAR_PER_FUNC + 1];
} PciDevice;
/* Mask definitions*/
#define IXP425_PCI_TOP_WORD_OF_LONG_MASK 0xffff0000
#define IXP425_PCI_TOP_BYTE_OF_LONG_MASK 0xff000000
#define IXP425_PCI_BOTTOM_WORD_OF_LONG_MASK 0x0000ffff
#define IXP425_PCI_BOTTOM_TRIBYTES_OF_LONG_MASK 0x00ffffff
#define IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK 0x0000000f
#define IXP425_PCI_MAX_UINT32 0xffffffff
#define IXP425_PCI_BAR_QUERY 0xffffffff
#define IXP425_PCI_BAR_MEM_BASE 0x100000
#define IXP425_PCI_BAR_IO_BASE 0x000000
/*define the maximum number of bus segments - we support a single segment*/
#define IXP425_PCI_MAX_BUS 1
/*define the maximum number of cards per bus segment*/
#define IXP425_PCI_MAX_DEV 4
/*define the maximum number of functions per device*/
#define IXP425_PCI_MAX_FUNC 8
/* define the maximum number of separate functions that we can
potentially have on the bus*/
#define IXP425_PCI_MAX_FUNC_ON_BUS (1+ IXP425_PCI_MAX_FUNC * \
IXP425_PCI_MAX_DEV * \
IXP425_PCI_MAX_BUS)
/*define the maximum number of BARs per function*/
#define IXP425_PCI_MAX_BAR_PER_FUNC 6
#define IXP425_PCI_MAX_BAR (IXP425_PCI_MAX_BAR_PER_FUNC * \
IXP425_PCI_MAX_FUNC_ON_BUS)
#define PCI_NP_CBE_BESL (4)
#define PCI_NP_AD_FUNCSL (8)
#define REG_WRITE(b,o,v) (*(volatile unsigned int*)((b+o))=(v))
#define REG_READ(b,o,v) ((v)=(*(volatile unsigned int*)((b+o))))
#define PCI_DELAY 500
#define USEC_LOOP_COUNT 533
#define PCI_SETTLE_USEC 200
#define PCI_MIN_RESET_ASSERT_USEC 2000
/*Register addressing definitions for PCI controller configuration
and status registers*/
#define PCI_CSR_BASE (0xC0000000)
/*
#define PCI_NP_AD_OFFSET (0x00)
#define PCI_NP_CBE_OFFSET (0x04)
#define PCI_NP_WDATA_OFFSET (0x08)
#define PCI_NP_RDATA_OFFSET (0x0C)
#define PCI_CRP_OFFSET (0x10)
#define PCI_CRP_WDATA_OFFSET (0x14)
#define PCI_CRP_RDATA_OFFSET (0x18)
#define PCI_CSR_OFFSET (0x1C)
#define PCI_ISR_OFFSET (0x20)
#define PCI_INTEN_OFFSET (0x24)
#define PCI_DMACTRL_OFFSET (0x28)
#define PCI_AHBMEMBASE_OFFSET (0x2C)
#define PCI_AHBIOBASE_OFFSET (0x30)
#define PCI_PCIMEMBASE_OFFSET (0x34)
#define PCI_AHBDOORBELL_OFFSET (0x38)
#define PCI_PCIDOORBELL_OFFSET (0x3C)
#define PCI_ATPDMA0_AHBADDR (0x40)
#define PCI_ATPDMA0_PCIADDR (0x44)
#define PCI_ATPDMA0_LENADDR (0x48)
#define PCI_ATPDMA1_AHBADDR (0x4C)
#define PCI_ATPDMA1_PCIADDR (0x50)
#define PCI_ATPDMA1_LENADDR (0x54)
#define PCI_PTADMA0_AHBADDR (0x58)
#define PCI_PTADMA0_PCIADDR (0x5C)
#define PCI_PTADMA0_LENADDR (0x60)
#define PCI_PTADMA1_AHBADDR (0x64)
#define PCI_PTADMA1_PCIADDR (0x68)
#define PCI_PTADMA1_LENADDR (0x6C)
*/
/*Non prefetch registers bit definitions*/
/*
#define NP_CMD_INTACK (0x0)
#define NP_CMD_SPECIAL (0x1)
#define NP_CMD_IOREAD (0x2)
#define NP_CMD_IOWRITE (0x3)
#define NP_CMD_MEMREAD (0x6)
#define NP_CMD_MEMWRITE (0x7)
#define NP_CMD_CONFIGREAD (0xa)
#define NP_CMD_CONFIGWRITE (0xb)
*/
/*define the default setting of the AHB memory base reg*/
#define IXP425_PCI_AHBMEMBASE_DEFAULT 0x00010203
#define IXP425_PCI_AHBIOBASE_DEFAULT 0x0
#define IXP425_PCI_PCIMEMBASE_DEFAULT 0x0
/*define the default settings for the controller's BARs*/
#ifdef IXP425_PCI_SIMPLE_MAPPING
#define IXP425_PCI_BAR_0_DEFAULT 0x00000000
#define IXP425_PCI_BAR_1_DEFAULT 0x01000000
#define IXP425_PCI_BAR_2_DEFAULT 0x02000000
#define IXP425_PCI_BAR_3_DEFAULT 0x03000000
#define IXP425_PCI_BAR_4_DEFAULT 0x00000000
#define IXP425_PCI_BAR_5_DEFAULT 0x00000000
#else
#define IXP425_PCI_BAR_0_DEFAULT 0x40000000
#define IXP425_PCI_BAR_1_DEFAULT 0x41000000
#define IXP425_PCI_BAR_2_DEFAULT 0x42000000
#define IXP425_PCI_BAR_3_DEFAULT 0x43000000
#define IXP425_PCI_BAR_4_DEFAULT 0x00000000
#define IXP425_PCI_BAR_5_DEFAULT 0x00000000
#endif
/*Configuration Port register bit definitions*/
#define PCI_CRP_WRITE BIT(16)
/*ISR (Interrupt status) Register bit definitions*/
#define PCI_ISR_PSE BIT(0)
#define PCI_ISR_PFE BIT(1)
#define PCI_ISR_PPE BIT(2)
#define PCI_ISR_AHBE BIT(3)
#define PCI_ISR_APDC BIT(4)
#define PCI_ISR_PADC BIT(5)
#define PCI_ISR_ADB BIT(6)
#define PCI_ISR_PDB BIT(7)
/*INTEN (Interrupt Enable) Register bit definitions*/
#define PCI_INTEN_PSE BIT(0)
#define PCI_INTEN_PFE BIT(1)
#define PCI_INTEN_PPE BIT(2)
#define PCI_INTEN_AHBE BIT(3)
#define PCI_INTEN_APDC BIT(4)
#define PCI_INTEN_PADC BIT(5)
#define PCI_INTEN_ADB BIT(6)
#define PCI_INTEN_PDB BIT(7)
/*PCI configuration regs.*/
#define PCI_CFG_VENDOR_ID 0x00
#define PCI_CFG_DEVICE_ID 0x02
#define PCI_CFG_COMMAND 0x04
#define PCI_CFG_STATUS 0x06
#define PCI_CFG_REVISION 0x08
#define PCI_CFG_PROGRAMMING_IF 0x09
#define PCI_CFG_SUBCLASS 0x0a
#define PCI_CFG_CLASS 0x0b
#define PCI_CFG_CACHE_LINE_SIZE 0x0c
#define PCI_CFG_LATENCY_TIMER 0x0d
#define PCI_CFG_HEADER_TYPE 0x0e
#define PCI_CFG_BIST 0x0f
#define PCI_CFG_BASE_ADDRESS_0 0x10
#define PCI_CFG_BASE_ADDRESS_1 0x14
#define PCI_CFG_BASE_ADDRESS_2 0x18
#define PCI_CFG_BASE_ADDRESS_3 0x1c
#define PCI_CFG_BASE_ADDRESS_4 0x20
#define PCI_CFG_BASE_ADDRESS_5 0x24
#define PCI_CFG_CIS 0x28
#define PCI_CFG_SUB_VENDOR_ID 0x2c
#define PCI_CFG_SUB_SYSTEM_ID 0x2e
#define PCI_CFG_EXPANSION_ROM 0x30
#define PCI_CFG_RESERVED_0 0x34
#define PCI_CFG_RESERVED_1 0x38
#define PCI_CFG_DEV_INT_LINE 0x3c
#define PCI_CFG_DEV_INT_PIN 0x3d
#define PCI_CFG_MIN_GRANT 0x3e
#define PCI_CFG_MAX_LATENCY 0x3f
#define PCI_CFG_SPECIAL_USE 0x41
#define PCI_CFG_MODE 0x43
/*Specify the initial command we send to PCI devices*/
#define INITIAL_PCI_CMD (PCI_CMD_IO_ENABLE \
| PCI_CMD_MEM_ENABLE \
| PCI_CMD_MASTER_ENABLE \
| PCI_CMD_WI_ENABLE)
/*define the sub vendor and subsystem to be used */
#define IXP425_PCI_SUB_VENDOR_SYSTEM 0x00000000
#define PCI_IRQ_LINES 4
#define PCI_CMD_IO_ENABLE 0x0001 /* IO access enable */
#define PCI_CMD_MEM_ENABLE 0x0002 /* memory access enable */
#define PCI_CMD_MASTER_ENABLE 0x0004 /* bus master enable */
#define PCI_CMD_MON_ENABLE 0x0008 /* monitor special cycles enable */
#define PCI_CMD_WI_ENABLE 0x0010 /* write and invalidate enable */
#define PCI_CMD_SNOOP_ENABLE 0x0020 /* palette snoop enable */
#define PCI_CMD_PERR_ENABLE 0x0040 /* parity error enable */
#define PCI_CMD_WC_ENABLE 0x0080 /* wait cycle enable */
#define PCI_CMD_SERR_ENABLE 0x0100 /* system error enable */
#define PCI_CMD_FBTB_ENABLE 0x0200 /* fast back to back enable */
/*CSR Register bit definitions*/
#define PCI_CSR_HOST BIT(0)
#define PCI_CSR_ARBEN BIT(1)
#define PCI_CSR_ADS BIT(2)
#define PCI_CSR_PDS BIT(3)
#define PCI_CSR_ABE BIT(4)
#define PCI_CSR_DBT BIT(5)
#define PCI_CSR_ASE BIT(8)
#define PCI_CSR_IC BIT(15)
/*Configuration command bit definitions*/
#define PCI_CFG_CMD_IOAE BIT(0)
#define PCI_CFG_CMD_MAE BIT(1)
#define PCI_CFG_CMD_BME BIT(2)
#define PCI_CFG_CMD_MWIE BIT(4)
#define PCI_CFG_CMD_SER BIT(8)
#define PCI_CFG_CMD_FBBE BIT(9)
#define PCI_CFG_CMD_MDPE BIT(24)
#define PCI_CFG_CMD_STA BIT(27)
#define PCI_CFG_CMD_RTA BIT(28)
#define PCI_CFG_CMD_RMA BIT(29)
#define PCI_CFG_CMD_SSE BIT(30)
#define PCI_CFG_CMD_DPE BIT(31)
/*DMACTRL DMA Control and status Register*/
#define PCI_DMACTRL_APDCEN BIT(0)
#define PCI_DMACTRL_APDC0 BIT(4)
#define PCI_DMACTRL_APDE0 BIT(5)
#define PCI_DMACTRL_APDC1 BIT(6)
#define PCI_DMACTRL_APDE1 BIT(7)
#define PCI_DMACTRL_PADCEN BIT(8)
#define PCI_DMACTRL_PADC0 BIT(12)
#define PCI_DMACTRL_PADE0 BIT(13)
#define PCI_DMACTRL_PADC1 BIT(14)
#define PCI_DMACTRL_PADE1 BIT(15)
/* GPIO related register */
#undef IXP425_GPIO_GPOUTR
#undef IXP425_GPIO_GPOER
#undef IXP425_GPIO_GPINR
#undef IXP425_GPIO_GPISR
#undef IXP425_GPIO_GPIT1R
#undef IXP425_GPIO_GPIT2R
#undef IXP425_GPIO_GPCLKR
#define IXP425_GPIO_GPOUTR 0xC8004000
#define IXP425_GPIO_GPOER 0xC8004004
#define IXP425_GPIO_GPINR 0xC8004008
#define IXP425_GPIO_GPISR 0xC800400C
#define IXP425_GPIO_GPIT1R 0xC8004010
#define IXP425_GPIO_GPIT2R 0xC8004014
#define IXP425_GPIO_GPCLKR 0xC8004018
#define READ_GPIO_REG(addr,val) \
(val) = *((volatile int *)(addr));
#define WRITE_GPIO_REG(addr,val) \
*((volatile int *)(addr)) = (val);
#endif
|
