eisa_eeprom.h

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 * eisa_eeprom.h - provide support for EISA adapters in PA-RISC machines
  4 *
  5 * Copyright (c) 2001, 2002 Daniel Engstrom <5116@telia.com>
  6 */
  7
  8#ifndef ASM_EISA_EEPROM_H
  9#define ASM_EISA_EEPROM_H
 10
 11extern void __iomem *eisa_eeprom_addr;
 12
 13#define HPEE_MAX_LENGTH       0x2000	/* maximum eeprom length */
 14
 15#define HPEE_SLOT_INFO(slot) (20+(48*slot))
 16
 17struct eeprom_header 
 18{
 19   
 20	u_int32_t num_writes;       /* number of writes */
 21 	u_int8_t  flags;            /* flags, usage? */
 22	u_int8_t  ver_maj;
 23	u_int8_t  ver_min;
 24	u_int8_t  num_slots;        /* number of EISA slots in system */
 25	u_int16_t csum;             /* checksum, I don't know how to calculate this */
 26	u_int8_t  pad[10];
 27} __attribute__ ((packed));
 28
 29
 30struct eeprom_eisa_slot_info
 31{
 32	u_int32_t eisa_slot_id;
 33	u_int32_t config_data_offset;
 34	u_int32_t num_writes;
 35	u_int16_t csum;
 36	u_int16_t num_functions;
 37	u_int16_t config_data_length;
 38	
 39	/* bits 0..3 are the duplicate slot id */ 
 40#define HPEE_SLOT_INFO_EMBEDDED  0x10
 41#define HPEE_SLOT_INFO_VIRTUAL   0x20
 42#define HPEE_SLOT_INFO_NO_READID 0x40
 43#define HPEE_SLOT_INFO_DUPLICATE 0x80
 44	u_int8_t slot_info;
 45	
 46#define HPEE_SLOT_FEATURES_ENABLE         0x01
 47#define HPEE_SLOT_FEATURES_IOCHK          0x02
 48#define HPEE_SLOT_FEATURES_CFG_INCOMPLETE 0x80
 49	u_int8_t slot_features;
 50	
 51	u_int8_t  ver_min;
 52	u_int8_t  ver_maj;
 53	
 54#define HPEE_FUNCTION_INFO_HAVE_TYPE      0x01
 55#define HPEE_FUNCTION_INFO_HAVE_MEMORY    0x02
 56#define HPEE_FUNCTION_INFO_HAVE_IRQ       0x04
 57#define HPEE_FUNCTION_INFO_HAVE_DMA       0x08
 58#define HPEE_FUNCTION_INFO_HAVE_PORT      0x10
 59#define HPEE_FUNCTION_INFO_HAVE_PORT_INIT 0x20
 60/* I think there are two slighty different 
 61 * versions of the function_info field 
 62 * one int the fixed header and one optional 
 63 * in the parsed slot data area */
 64#define HPEE_FUNCTION_INFO_HAVE_FUNCTION  0x01
 65#define HPEE_FUNCTION_INFO_F_DISABLED     0x80
 66#define HPEE_FUNCTION_INFO_CFG_FREE_FORM  0x40
 67	u_int8_t  function_info;
 68
 69#define HPEE_FLAG_BOARD_IS_ISA		  0x01 /* flag and minor version for isa board */
 70	u_int8_t  flags;
 71	u_int8_t  pad[24];
 72} __attribute__ ((packed));
 73
 74
 75#define HPEE_MEMORY_MAX_ENT   9
 76/* memory descriptor: byte 0 */
 77#define HPEE_MEMORY_WRITABLE  0x01
 78#define HPEE_MEMORY_CACHABLE  0x02
 79#define HPEE_MEMORY_TYPE_MASK 0x18
 80#define HPEE_MEMORY_TYPE_SYS  0x00
 81#define HPEE_MEMORY_TYPE_EXP  0x08
 82#define HPEE_MEMORY_TYPE_VIR  0x10
 83#define HPEE_MEMORY_TYPE_OTH  0x18
 84#define HPEE_MEMORY_SHARED    0x20
 85#define HPEE_MEMORY_MORE      0x80
 86
 87/* memory descriptor: byte 1 */
 88#define HPEE_MEMORY_WIDTH_MASK 0x03
 89#define HPEE_MEMORY_WIDTH_BYTE 0x00
 90#define HPEE_MEMORY_WIDTH_WORD 0x01
 91#define HPEE_MEMORY_WIDTH_DWORD 0x02
 92#define HPEE_MEMORY_DECODE_MASK 0x0c
 93#define HPEE_MEMORY_DECODE_20BITS 0x00
 94#define HPEE_MEMORY_DECODE_24BITS 0x04
 95#define HPEE_MEMORY_DECODE_32BITS 0x08
 96/* byte 2 and 3 are a 16bit LE value
 97 * containing the memory size in kilobytes */
 98/* byte 4,5,6 are a 24bit LE value
 99 * containing the memory base address */
100
101
102#define HPEE_IRQ_MAX_ENT      7
103/* Interrupt entry: byte 0 */
104#define HPEE_IRQ_CHANNEL_MASK 0xf
105#define HPEE_IRQ_TRIG_LEVEL   0x20
106#define HPEE_IRQ_MORE         0x80
107/* byte 1 seems to be unused */
108
109#define HPEE_DMA_MAX_ENT     4
110
111/* dma entry: byte 0 */
112#define HPEE_DMA_CHANNEL_MASK 7
113#define HPEE_DMA_SIZE_MASK	0xc
114#define HPEE_DMA_SIZE_BYTE	0x0
115#define HPEE_DMA_SIZE_WORD	0x4
116#define HPEE_DMA_SIZE_DWORD	0x8
117#define HPEE_DMA_SHARED      0x40
118#define HPEE_DMA_MORE        0x80
119
120/* dma entry: byte 1 */
121#define HPEE_DMA_TIMING_MASK 0x30
122#define HPEE_DMA_TIMING_ISA	0x0
123#define HPEE_DMA_TIMING_TYPEA 0x10
124#define HPEE_DMA_TIMING_TYPEB 0x20
125#define HPEE_DMA_TIMING_TYPEC 0x30
126
127#define HPEE_PORT_MAX_ENT 20
128/* port entry byte 0 */
129#define HPEE_PORT_SIZE_MASK 0x1f
130#define HPEE_PORT_SHARED    0x40
131#define HPEE_PORT_MORE      0x80
132/* byte 1 and 2 is a 16bit LE value
133 * containing the start port number */
134
135#define HPEE_PORT_INIT_MAX_LEN     60 /* in bytes here */
136/* port init entry byte 0 */
137#define HPEE_PORT_INIT_WIDTH_MASK  0x3
138#define HPEE_PORT_INIT_WIDTH_BYTE  0x0
139#define HPEE_PORT_INIT_WIDTH_WORD  0x1
140#define HPEE_PORT_INIT_WIDTH_DWORD 0x2
141#define HPEE_PORT_INIT_MASK        0x4
142#define HPEE_PORT_INIT_MORE        0x80
143
144#define HPEE_SELECTION_MAX_ENT 26
145
146#define HPEE_TYPE_MAX_LEN    80
147
148#endif