224 lines
12 KiB
C
224 lines
12 KiB
C
#ifndef _PCI_H_
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#define _PCI_H_
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/*
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* This file is part of BaS_gcc.
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*
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* BaS_gcc is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* BaS_gcc is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with BaS_gcc. If not, see <http://www.gnu.org/licenses/>.
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*
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* Created on: 26.02.2013
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* Author: Markus Fröschle
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*/
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#include <stdint.h>
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#define PCI_MEMORY_OFFSET (0x80000000)
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#define PCI_MEMORY_SIZE (0x40000000) /* 1 GByte PCI memory window */
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#define PCI_IO_OFFSET (0xD0000000)
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#define PCI_IO_SIZE (0x10000000) /* 128 MByte PCI I/O window */
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#define PCIIDR 0x00 /* PCI Configuration ID Register */
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#define PCICSR 0x04 /* PCI Command/Status Register */
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#define PCICR 0x04 /* PCI Command Register */
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#define PCISR 0x06 /* PCI Status Register */
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#define PCIREV 0x08 /* PCI Revision ID Register */
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#define PCICCR 0x09 /* PCI Class Code Register */
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#define PCICLSR 0x0C /* PCI Cache Line Size Register */
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#define PCILTR 0x0D /* PCI Latency Timer Register */
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#define PCIHTR 0x0E /* PCI Header Type Register */
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#define PCIBISTR 0x0F /* PCI Build-In Self Test Register */
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#define PCIBAR0 0x10 /* PCI Base Address Register for Memory
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Accesses to Local, Runtime, and DMA */
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#define PCIBAR1 0x14 /* PCI Base Address Register for I/O
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Accesses to Local, Runtime, and DMA */
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#define PCIBAR2 0x18 /* PCI Base Address Register for Memory
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Accesses to Local Address Space 0 */
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#define PCIBAR3 0x1C /* PCI Base Address Register for Memory
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Accesses to Local Address Space 1 */
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#define PCIBAR4 0x20 /* PCI Base Address Register, reserved */
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#define PCIBAR5 0x24 /* PCI Base Address Register, reserved */
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#define PCICIS 0x28 /* PCI Cardbus CIS Pointer, not support*/
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#define PCISVID 0x2C /* PCI Subsystem Vendor ID */
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#define PCISID 0x2E /* PCI Subsystem ID */
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#define PCIERBAR 0x30 /* PCI Expansion ROM Base Register */
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#define CAP_PTR 0x34 /* New Capability Pointer */
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#define PCIILR 0x3C /* PCI Interrupt Line Register */
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#define PCIIPR 0x3D /* PCI Interrupt Pin Register */
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#define PCIMGR 0x3E /* PCI Min_Gnt Register */
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#define PCIMLR 0x3F /* PCI Max_Lat Register */
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#define PMCAPID 0x40 /* Power Management Capability ID */
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#define PMNEXT 0x41 /* Power Management Next Capability
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Pointer */
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#define PMC 0x42 /* Power Management Capabilities */
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#define PMCSR 0x44 /* Power Management Control/Status */
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#define PMCSR_BSE 0x46 /* PMCSR Bridge Support Extensions */
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#define PMDATA 0x47 /* Power Management Data */
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#define HS_CNTL 0x48 /* Hot Swap Control */
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#define HS_NEXT 0x49 /* Hot Swap Next Capability Pointer */
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#define HS_CSR 0x4A /* Hot Swap Control/Status */
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#define PVPDCNTL 0x4C /* PCI Vital Product Data Control */
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#define PVPD_NEXT 0x4D /* PCI Vital Product Data Next
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Capability Pointer */
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#define PVPDAD 0x4E /* PCI Vital Product Data Address */
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#define PVPDATA 0x50 /* PCI VPD Data */
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/* Header type 1 (PCI-to-PCI bridges) */
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#define PCI_PRIMARY_BUS 0x18 /* Primary bus number */
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#define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */
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#define PCI_SUBORDINATE_BUS 0x1A /* Highest bus number behind the bridge */
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#define PCI_SEC_LATENCY_TIMER 0x1B /* Latency timer for secondary interface */
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#define PCI_IO_BASE 0x1C /* I/O range behind the bridge */
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#define PCI_IO_LIMIT 0x1D
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#define PCI_SEC_STATUS 0x1E /* Secondary status register, only bit 14 used */
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#define PCI_MEMORY_BASE 0x20 /* Memory range behind */
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#define PCI_MEMORY_LIMIT 0x22
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#define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */
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#define PCI_PREF_MEMORY_LIMIT 0x26
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#define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */
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#define PCI_PREF_LIMIT_UPPER32 0x2C
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#define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */
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#define PCI_IO_LIMIT_UPPER16 0x32
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#define PCI_BRIDGE_CONTROL 0x3E /* Bridge Control */
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typedef struct
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{
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unsigned long *subcookie;
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unsigned long version;
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long routine[45];
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} PCI_COOKIE;
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typedef struct /* structure of resource descriptor */
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{
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unsigned short next; /* length of the following structure */
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unsigned short flags; /* type of resource and misc. flags */
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unsigned long start; /* start-address of resource */
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unsigned long length; /* length of resource */
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unsigned long offset; /* offset PCI to phys. CPU Address */
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unsigned long dmaoffset; /* offset for DMA-transfers */
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} __attribute__ ((packed)) PCI_RSC_DESC;
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typedef struct /* structure of address conversion */
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{
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unsigned long adr; /* calculated address (CPU<->PCI) */
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unsigned long len; /* length of memory range */
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} PCI_CONV_ADR;
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/******************************************************************************/
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/* PCI-BIOS Error Codes */
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/******************************************************************************/
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#define PCI_SUCCESSFUL 0 /* everything's fine */
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#define PCI_FUNC_NOT_SUPPORTED -2 /* function not supported */
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#define PCI_BAD_VENDOR_ID -3 /* wrong Vendor ID */
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#define PCI_DEVICE_NOT_FOUND -4 /* PCI-Device not found */
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#define PCI_BAD_REGISTER_NUMBER -5 /* wrong register number */
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#define PCI_SET_FAILED -6 /* reserved for later use */
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#define PCI_BUFFER_TOO_SMALL -7 /* reserved for later use */
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#define PCI_GENERAL_ERROR -8 /* general BIOS error code */
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#define PCI_BAD_HANDLE -9 /* wrong/unknown PCI-handle */
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/******************************************************************************/
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/* Flags used in Resource-Descriptor */
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/******************************************************************************/
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#define FLG_IO 0x4000 /* Ressource in IO range */
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#define FLG_ROM 0x2000 /* Expansion ROM */
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#define FLG_LAST 0x8000 /* last ressource */
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#define FLG_8BIT 0x0100 /* 8 bit accesses allowed */
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#define FLG_16BIT 0x0200 /* 16 bit accesses allowed */
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#define FLG_32BIT 0x0400 /* 32 bit accesses allowed */
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#define FLG_ENDMASK 0x000F /* mask for byte ordering */
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/******************************************************************************/
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/* Values used in FLG_ENDMASK for Byte Ordering */
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/******************************************************************************/
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#define ORD_MOTOROLA 0 /* Motorola (big endian) */
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#define ORD_INTEL_AS 1 /* Intel (little endian), addr.swapped */
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#define ORD_INTEL_LS 2 /* Intel (little endian), lane swapped */
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#define ORD_UNKNOWN 15 /* unknown (BIOS-calls allowed only) */
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/******************************************************************************/
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/* Status Info used in Device-Descriptor */
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/******************************************************************************/
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#define DEVICE_FREE 0 /* Device is not used */
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#define DEVICE_USED 1 /* Device is used by another driver */
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#define DEVICE_CALLBACK 2 /* used, but driver can be cancelled */
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#define DEVICE_AVAILABLE 3 /* used, not available */
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#define NO_DEVICE -1 /* no device detected */
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/* PCI configuration space macros */
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/* register 0x00 macros */
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#define PCI_VENDOR_ID(i) ((i) & 0xffff)
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#define PCI_DEVICE_ID(i) (((i) & 0xffff0000) >> 16)
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/* register 0x04 macros */
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#define PCI_STATUS(i) (((i) >> 16) & 0xffff)
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#define PCI_COMMAND(i) ((i) & 0xffff)
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/* register 0x08 macros */
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#define PCI_CLASS_CODE(i) (((i) & 0xff000000) >> 24)
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#define PCI_SUBCLASS(i) (((i) & 0xff0000) >> 16)
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#define PCI_PROF_IF(i) (((i) & 0xff00) >> 8)
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#define PCI_REVISION_ID(i) (((i) & 0xff))
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/* register 0x0c macros */
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#define PCI_BIST(i) (((i) & 0xff000000) >> 24)
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#define PCI_HEADER_TYPE(i) (((i) & 0xff0000) >> 16)
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#define PCI_LAT_TIMER(i) (((i) & 0xff00) >> 8)
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#define PCI_CACHELINE_SIZE(i) (((i) & 0xff))
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/* register 0x2c macros */
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#define PCI_SUBSYS_ID(i) (((i) & 0xffff0000) >> 16)
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#define PCI_SUBSYS_VID(i) (((i) & 0xffff))
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/* register 0x34 macros */
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#define PCI_CAPABILITIES(i) ((i) & 0xff)
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/* register 0x3c macros */
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#define PCI_MAX_LATENCY(i) (((i) & 0xff000000) >> 24)
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#define PCI_MIN_GRANT(i) (((i) & 0xff0000) >> 16)
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#define PCI_INTERRUPT_PIN(i) (((i) & 0xff00) >> 8)
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#define PCI_INTERRUPT_LINE(i) (((i)) & 0xff)
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#define IS_PCI_MEM_BAR(I) ((i) & 1) == 0
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#define IS_PCI_IO_BAR(i) ((i) & 1) == 1
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#define PCI_MEMBAR_TYPE(i) (((i) & 0x6) >> 1)
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#define PCI_IOBAR_ADR(i) (((i) & 0xfffffffc))
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#define PCI_MEMBAR_ADR(i) (((i) & 0xfffffff0))
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extern void init_eport(void);
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extern void init_xlbus_arbiter(void);
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extern void init_pci(void);
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extern int16_t pci_find_device(uint16_t device_id, uint16_t vendor_id, int index);
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extern uint32_t pci_read_config_longword(uint16_t handle, uint16_t offset);
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extern uint16_t pci_read_config_word(uint16_t handle, uint16_t offset);
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extern uint8_t pci_read_config_byte(uint16_t handle, uint16_t offset);
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extern void pci_write_config_longword(uint16_t handle, uint16_t offset, uint32_t value);
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extern void pci_write_config_word(uint16_t handle, uint16_t offset, uint16_t value);
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extern void pci_write_config_byte(uint16_t handle, uint16_t offset, uint8_t value);
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extern PCI_RSC_DESC *pci_get_resource(uint16_t handle);
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extern int16_t pci_hook_interrupt(uint16_t handle, void *interrupt_handler, void *parameter);
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extern int16_t pci_unhook_interrupt(uint16_t handle);
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#define PCI_HANDLE(bus, slot, function) (0 | ((bus & 0xff) << 8 | (slot & 0x1f) << 3 | (function & 7)))
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#define PCI_BUS_FROM_HANDLE(h) (((h) & 0xff00) >> 8)
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#define PCI_SLOT_FROM_HANDLE(h) (((h) & 0xf8) >> 3)
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#define PCI_FUNCTION_FROM_HANDLE(h) (((h) & 0x7))
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#endif /* _PCI_H_ */
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