tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/************************************************************************/
2/* */
3/* es4h.h: Hardware definition of the ES/4h Ethernet Switch, from */
4/* both the host and the 3051's point of view. */
5/* NOTE: this name is a misnomer now that there is a PCI */
6/* board. Everything that says "es4h" should really be */
7/* "se4". But we'll keep the old name for now. */
8/* */
9/* $Id: es4h.h,v 1.10 1996/08/22 17:16:53 rick Exp $ */
10/* */
11/************************************************************************/
12
13/************************************************************************/
14/* */
15/* EISA I/O Registers. These are located at 0x1000 * slot-number */
16/* plus the indicated address. I.E. 0x4000-0x4009 for slot 4. */
17/* */
18/************************************************************************/
19
20#define ES4H_MANUFmsb 0x00 /* Read-only */
21#define ES4H_MANUFlsb 0x01 /* Read-only */
22# define ES4H_MANUF_CODE 0x1049 /* = "DBI" */
23
24#define ES4H_PRODUCT 0x02 /* Read-only */
25# define ES4H_PRODUCT_CODE 0x0A
26# define EPC_PRODUCT_CODE 0x03
27
28#define ES4H_REVISION 0x03 /* Read-only */
29# define ES4H_REVISION_CODE 0x01
30
31#define ES4H_EC 0x04 /* EISA Control */
32# define ES4H_EC_RESET 0x04 /* WO, EISA reset */
33# define ES4H_EC_ENABLE 0x01 /* RW, EISA enable - set to */
34 /* 1 before memory enable */
35#define ES4H_PC 0x05 /* Processor Control */
36# define ES4H_PC_RESET 0x04 /* RW, 3051 reset */
37# define ES4H_PC_INT 0x08 /* WO, assert 3051 intr. 3 */
38
39#define ES4H_MW 0x06 /* Memory Window select and enable */
40# define ES4H_MW_ENABLE 0x80 /* WO, enable memory */
41# define ES4H_MW_SELECT_MASK 0x1f /* WO, 32k window selected */
42
43#define ES4H_IS 0x07 /* Interrupt, addr select */
44# define ES4H_IS_INTMASK 0x07 /* WO, interrupt select */
45# define ES4H_IS_INTOFF 0x00 /* No IRQ */
46# define ES4H_IS_INT3 0x03 /* IRQ 3 */
47# define ES4H_IS_INT5 0x02 /* IRQ 5 */
48# define ES4H_IS_INT7 0x01 /* IRQ 7 */
49# define ES4H_IS_INT10 0x04 /* IRQ 10 */
50# define ES4H_IS_INT11 0x05 /* IRQ 11 */
51# define ES4H_IS_INT12 0x06 /* IRQ 12 */
52# define ES4H_IS_INT15 0x07 /* IRQ 15 */
53# define ES4H_IS_INTACK 0x10 /* WO, interrupt ack */
54# define ES4H_IS_INTPEND 0x10 /* RO, interrupt pending */
55# define ES4H_IS_LINEAR 0x40 /* WO, no memory windowing */
56# define ES4H_IS_AS15 0x80 /* RW, address select bit 15 */
57
58#define ES4H_AS_23_16 0x08 /* Address select bits 23-16 */
59#define ES4H_AS_31_24 0x09 /* Address select bits 31-24 */
60
61#define ES4H_IO_MAX 0x09 /* Size of I/O space */
62
63/*
64 * PCI
65 */
66#define SE6_RESET PLX_USEROUT
67
68/************************************************************************/
69/* */
70/* 3051 Memory Map */
71/* */
72/* Note: 3051 has 4K I-cache, 2K D-cache. 1 cycle is 50 nsec. */
73/* */
74/************************************************************************/
75#define SE4_NPORTS 4 /* # of ethernet ports */
76#define SE6_NPORTS 6 /* # of ethernet ports */
77#define SE_NPORTS 6 /* Max # of ethernet ports */
78
79#define ES4H_RAM_BASE 0x83000000 /* Base address of RAM */
80#define ES4H_RAM_SIZE 0x00200000 /* Size of RAM (2MB) */
81#define ES4H_RAM_INTBASE 0x83800000 /* Base of int-on-write RAM */
82 /* a.k.a. PKT RAM */
83
84 /* Ethernet controllers */
85 /* See: i82596.h */
86#define ES4H_ETHER0_PORT 0xA2000000
87#define ES4H_ETHER0_CMD 0xA2000100
88#define ES4H_ETHER1_PORT 0xA2000200
89#define ES4H_ETHER1_CMD 0xA2000300
90#define ES4H_ETHER2_PORT 0xA2000400
91#define ES4H_ETHER2_CMD 0xA2000500
92#define ES4H_ETHER3_PORT 0xA2000600
93#define ES4H_ETHER3_CMD 0xA2000700
94#define ES4H_ETHER4_PORT 0xA2000800 /* RS SE-6 only */
95#define ES4H_ETHER4_CMD 0xA2000900 /* RS SE-6 only */
96#define ES4H_ETHER5_PORT 0xA2000A00 /* RS SE-6 only */
97#define ES4H_ETHER5_CMD 0xA2000B00 /* RS SE-6 only */
98
99#define ES4H_I8254 0xA2040000 /* 82C54 timers */
100 /* See: i8254.h */
101
102#define SE4_I8254_HZ (23000000/4) /* EISA clock input freq. */
103#define SE4_IDT_HZ (46000000) /* EISA CPU freq. */
104#define SE6_I8254_HZ (20000000/4) /* PCI clock input freq. */
105#define SE6_IDT_HZ (50000000) /* PCI CPU freq. */
106#define ES4H_I8254_HZ (23000000/4) /* EISA clock input freq. */
107
108#define ES4H_GPP 0xA2050000 /* General purpose port */
109 /*
110 * SE-4 (EISA) GPP bits
111 */
112# define ES4H_GPP_C0_100 0x0001 /* WO, Chan 0: 100 ohm TP */
113# define ES4H_GPP_C0_SQE 0x0002 /* WO, Chan 0: normal squelch */
114# define ES4H_GPP_C1_100 0x0004 /* WO, Chan 1: 100 ohm TP */
115# define ES4H_GPP_C1_SQE 0x0008 /* WO, Chan 1: normal squelch */
116# define ES4H_GPP_C2_100 0x0010 /* WO, Chan 2: 100 ohm TP */
117# define ES4H_GPP_C2_SQE 0x0020 /* WO, Chan 2: normal squelch */
118# define ES4H_GPP_C3_100 0x0040 /* WO, Chan 3: 100 ohm TP */
119# define ES4H_GPP_C3_SQE 0x0080 /* WO, Chan 3: normal squelch */
120# define ES4H_GPP_SQE 0x00AA /* WO, All: normal squelch */
121# define ES4H_GPP_100 0x0055 /* WO, All: 100 ohm TP */
122# define ES4H_GPP_HOSTINT 0x0100 /* RO, cause intr. to host */
123 /* Hold high > 250 nsec */
124# define SE4_GPP_EED 0x0200 /* RW, EEPROM data bit */
125# define SE4_GPP_EECS 0x0400 /* RW, EEPROM chip select */
126# define SE4_GPP_EECK 0x0800 /* RW, EEPROM clock */
127
128 /*
129 * SE-6 (PCI) GPP bits
130 */
131# define SE6_GPP_EED 0x0001 /* RW, EEPROM data bit */
132# define SE6_GPP_EECS 0x0002 /* RW, EEPROM chip select */
133# define SE6_GPP_EECK 0x0004 /* RW, EEPROM clock */
134# define SE6_GPP_LINK 0x00fc /* R, Link status LEDs */
135
136#define ES4H_INTVEC 0xA2060000 /* RO: Interrupt Vector */
137# define ES4H_IV_DMA0 0x01 /* Chan 0 DMA interrupt */
138# define ES4H_IV_PKT0 0x02 /* Chan 0 PKT interrupt */
139# define ES4H_IV_DMA1 0x04 /* Chan 1 DMA interrupt */
140# define ES4H_IV_PKT1 0x08 /* Chan 1 PKT interrupt */
141# define ES4H_IV_DMA2 0x10 /* Chan 2 DMA interrupt */
142# define ES4H_IV_PKT2 0x20 /* Chan 2 PKT interrupt */
143# define ES4H_IV_DMA3 0x40 /* Chan 3 DMA interrupt */
144# define ES4H_IV_PKT3 0x80 /* Chan 3 PKT interrupt */
145
146#define ES4H_INTACK 0xA2060000 /* WO: Interrupt Ack */
147# define ES4H_INTACK_8254 0x01 /* Real Time Clock (int 0) */
148# define ES4H_INTACK_HOST 0x02 /* Host (int 1) */
149# define ES4H_INTACK_PKT0 0x04 /* Chan 0 Pkt (int 2) */
150# define ES4H_INTACK_PKT1 0x08 /* Chan 1 Pkt (int 3) */
151# define ES4H_INTACK_PKT2 0x10 /* Chan 2 Pkt (int 4) */
152# define ES4H_INTACK_PKT3 0x20 /* Chan 3 Pkt (int 5) */
153
154#define SE6_PLX 0xA2070000 /* PLX 9060, SE-6 (PCI) only */
155 /* see plx9060.h */
156
157#define SE6_PCI_VENDOR_ID 0x114F /* Digi PCI vendor ID */
158#define SE6_PCI_DEVICE_ID 0x0003 /* RS SE-6 device ID */
159#define SE6_PCI_ID ((SE6_PCI_DEVICE_ID<<16) | SE6_PCI_VENDOR_ID)
160
161/*
162 * IDT Interrupts
163 */
164#define ES4H_INT_8254 IDT_INT0
165#define ES4H_INT_HOST IDT_INT1
166#define ES4H_INT_ETHER0 IDT_INT2
167#define ES4H_INT_ETHER1 IDT_INT3
168#define ES4H_INT_ETHER2 IDT_INT4
169#define ES4H_INT_ETHER3 IDT_INT5
170
171/*
172 * Because there are differences between the SE-4 and the SE-6,
173 * we assume that the following globals will be set up at init
174 * time in main.c to containt the appropriate constants from above
175 */
176extern ushort Gpp; /* Softcopy of GPP register */
177extern ushort EEck; /* Clock bit */
178extern ushort EEcs; /* CS bit */
179extern ushort EEd; /* Data bit */
180extern ulong I8254_Hz; /* i8254 input frequency */
181extern ulong IDT_Hz; /* IDT CPU frequency */
182extern int Nports; /* Number of ethernet controllers */
183extern int Nchan; /* Nports+1 */