summaryrefslogtreecommitdiffstats
path: root/arch/ia64/sn/include/pci/pic.h
blob: fd18acecb1e67e783c4085f27eb7e6390af0a47d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.
 */
#ifndef _ASM_IA64_SN_PCI_PIC_H
#define _ASM_IA64_SN_PCI_PIC_H

/*
 * PIC AS DEVICE ZERO
 * ------------------
 *
 * PIC handles PCI/X busses.  PCI/X requires that the 'bridge' (i.e. PIC)
 * be designated as 'device 0'.   That is a departure from earlier SGI
 * PCI bridges.  Because of that we use config space 1 to access the
 * config space of the first actual PCI device on the bus. 
 * Here's what the PIC manual says:
 *
 *     The current PCI-X bus specification now defines that the parent
 *     hosts bus bridge (PIC for example) must be device 0 on bus 0. PIC
 *     reduced the total number of devices from 8 to 4 and removed the
 *     device registers and windows, now only supporting devices 0,1,2, and
 *     3. PIC did leave all 8 configuration space windows. The reason was
 *     there was nothing to gain by removing them. Here in lies the problem.
 *     The device numbering we do using 0 through 3 is unrelated to the device
 *     numbering which PCI-X requires in configuration space. In the past we
 *     correlated Configs pace and our device space 0 <-> 0, 1 <-> 1, etc.
 *     PCI-X requires we start a 1, not 0 and currently the PX brick
 *     does associate our:
 * 
 *         device 0 with configuration space window 1,
 *         device 1 with configuration space window 2, 
 *         device 2 with configuration space window 3,
 *         device 3 with configuration space window 4.
 *
 * The net effect is that all config space access are off-by-one with 
 * relation to other per-slot accesses on the PIC.   
 * Here is a table that shows some of that:
 *
 *                               Internal Slot#
 *           |
 *           |     0         1        2         3
 * ----------|---------------------------------------
 * config    |  0x21000   0x22000  0x23000   0x24000
 *           |
 * even rrb  |  0[0]      n/a      1[0]      n/a	[] == implied even/odd
 *           |
 * odd rrb   |  n/a       0[1]     n/a       1[1]
 *           |
 * int dev   |  00       01        10        11
 *           |
 * ext slot# |  1        2         3         4
 * ----------|---------------------------------------
 */

#define PIC_ATE_TARGETID_SHFT           8
#define PIC_HOST_INTR_ADDR              0x0000FFFFFFFFFFFFUL
#define PIC_PCI64_ATTR_TARG_SHFT        60


/*****************************************************************************
 *********************** PIC MMR structure mapping ***************************
 *****************************************************************************/

/* NOTE: PIC WAR. PV#854697.  PIC does not allow writes just to [31:0]
 * of a 64-bit register.  When writing PIC registers, always write the 
 * entire 64 bits.
 */

struct pic {

    /* 0x000000-0x00FFFF -- Local Registers */

    /* 0x000000-0x000057 -- Standard Widget Configuration */
    uint64_t		p_wid_id;			/* 0x000000 */
    uint64_t		p_wid_stat;			/* 0x000008 */
    uint64_t		p_wid_err_upper;		/* 0x000010 */
    uint64_t		p_wid_err_lower;		/* 0x000018 */
    #define p_wid_err p_wid_err_lower
    uint64_t		p_wid_control;			/* 0x000020 */
    uint64_t		p_wid_req_timeout;		/* 0x000028 */
    uint64_t		p_wid_int_upper;		/* 0x000030 */
    uint64_t		p_wid_int_lower;		/* 0x000038 */
    #define p_wid_int p_wid_int_lower
    uint64_t		p_wid_err_cmdword;		/* 0x000040 */
    uint64_t		p_wid_llp;			/* 0x000048 */
    uint64_t		p_wid_tflush;			/* 0x000050 */

    /* 0x000058-0x00007F -- Bridge-specific Widget Configuration */
    uint64_t		p_wid_aux_err;			/* 0x000058 */
    uint64_t		p_wid_resp_upper;		/* 0x000060 */
    uint64_t		p_wid_resp_lower;		/* 0x000068 */
    #define p_wid_resp p_wid_resp_lower
    uint64_t		p_wid_tst_pin_ctrl;		/* 0x000070 */
    uint64_t		p_wid_addr_lkerr;		/* 0x000078 */

    /* 0x000080-0x00008F -- PMU & MAP */
    uint64_t		p_dir_map;			/* 0x000080 */
    uint64_t		_pad_000088;			/* 0x000088 */

    /* 0x000090-0x00009F -- SSRAM */
    uint64_t		p_map_fault;			/* 0x000090 */
    uint64_t		_pad_000098;			/* 0x000098 */

    /* 0x0000A0-0x0000AF -- Arbitration */
    uint64_t		p_arb;				/* 0x0000A0 */
    uint64_t		_pad_0000A8;			/* 0x0000A8 */

    /* 0x0000B0-0x0000BF -- Number In A Can or ATE Parity Error */
    uint64_t		p_ate_parity_err;		/* 0x0000B0 */
    uint64_t		_pad_0000B8;			/* 0x0000B8 */

    /* 0x0000C0-0x0000FF -- PCI/GIO */
    uint64_t		p_bus_timeout;			/* 0x0000C0 */
    uint64_t		p_pci_cfg;			/* 0x0000C8 */
    uint64_t		p_pci_err_upper;		/* 0x0000D0 */
    uint64_t		p_pci_err_lower;		/* 0x0000D8 */
    #define p_pci_err p_pci_err_lower
    uint64_t		_pad_0000E0[4];			/* 0x0000{E0..F8} */

    /* 0x000100-0x0001FF -- Interrupt */
    uint64_t		p_int_status;			/* 0x000100 */
    uint64_t		p_int_enable;			/* 0x000108 */
    uint64_t		p_int_rst_stat;			/* 0x000110 */
    uint64_t		p_int_mode;			/* 0x000118 */
    uint64_t		p_int_device;			/* 0x000120 */
    uint64_t		p_int_host_err;			/* 0x000128 */
    uint64_t		p_int_addr[8];			/* 0x0001{30,,,68} */
    uint64_t		p_err_int_view;			/* 0x000170 */
    uint64_t		p_mult_int;			/* 0x000178 */
    uint64_t		p_force_always[8];		/* 0x0001{80,,,B8} */
    uint64_t		p_force_pin[8];			/* 0x0001{C0,,,F8} */

    /* 0x000200-0x000298 -- Device */
    uint64_t		p_device[4];			/* 0x0002{00,,,18} */
    uint64_t		_pad_000220[4];			/* 0x0002{20,,,38} */
    uint64_t		p_wr_req_buf[4];		/* 0x0002{40,,,58} */
    uint64_t		_pad_000260[4];			/* 0x0002{60,,,78} */
    uint64_t		p_rrb_map[2];			/* 0x0002{80,,,88} */
    #define p_even_resp p_rrb_map[0]			/* 0x000280 */
    #define p_odd_resp  p_rrb_map[1]			/* 0x000288 */
    uint64_t		p_resp_status;			/* 0x000290 */
    uint64_t		p_resp_clear;			/* 0x000298 */

    uint64_t		_pad_0002A0[12];		/* 0x0002{A0..F8} */

    /* 0x000300-0x0003F8 -- Buffer Address Match Registers */
    struct {
	uint64_t	upper;				/* 0x0003{00,,,F0} */
	uint64_t	lower;				/* 0x0003{08,,,F8} */
    } p_buf_addr_match[16];

    /* 0x000400-0x0005FF -- Performance Monitor Registers (even only) */
    struct {
	uint64_t	flush_w_touch;			/* 0x000{400,,,5C0} */
	uint64_t	flush_wo_touch;			/* 0x000{408,,,5C8} */
	uint64_t	inflight;			/* 0x000{410,,,5D0} */
	uint64_t	prefetch;			/* 0x000{418,,,5D8} */
	uint64_t	total_pci_retry;		/* 0x000{420,,,5E0} */
	uint64_t	max_pci_retry;			/* 0x000{428,,,5E8} */
	uint64_t	max_latency;			/* 0x000{430,,,5F0} */
	uint64_t	clear_all;			/* 0x000{438,,,5F8} */
    } p_buf_count[8];

    
    /* 0x000600-0x0009FF -- PCI/X registers */
    uint64_t		p_pcix_bus_err_addr;		/* 0x000600 */
    uint64_t		p_pcix_bus_err_attr;		/* 0x000608 */
    uint64_t		p_pcix_bus_err_data;		/* 0x000610 */
    uint64_t		p_pcix_pio_split_addr;		/* 0x000618 */
    uint64_t		p_pcix_pio_split_attr;		/* 0x000620 */
    uint64_t		p_pcix_dma_req_err_attr;	/* 0x000628 */
    uint64_t		p_pcix_dma_req_err_addr;	/* 0x000630 */
    uint64_t		p_pcix_timeout;			/* 0x000638 */

    uint64_t		_pad_000640[120];		/* 0x000{640,,,9F8} */

    /* 0x000A00-0x000BFF -- PCI/X Read&Write Buffer */
    struct {
	uint64_t	p_buf_addr;			/* 0x000{A00,,,AF0} */
	uint64_t	p_buf_attr;			/* 0X000{A08,,,AF8} */
    } p_pcix_read_buf_64[16];

    struct {
	uint64_t	p_buf_addr;			/* 0x000{B00,,,BE0} */
	uint64_t	p_buf_attr;			/* 0x000{B08,,,BE8} */
	uint64_t	p_buf_valid;			/* 0x000{B10,,,BF0} */
	uint64_t	__pad1;				/* 0x000{B18,,,BF8} */
    } p_pcix_write_buf_64[8];

    /* End of Local Registers -- Start of Address Map space */

    char		_pad_000c00[0x010000 - 0x000c00];

    /* 0x010000-0x011fff -- Internal ATE RAM (Auto Parity Generation) */
    uint64_t		p_int_ate_ram[1024];		/* 0x010000-0x011fff */

    /* 0x012000-0x013fff -- Internal ATE RAM (Manual Parity Generation) */
    uint64_t		p_int_ate_ram_mp[1024];		/* 0x012000-0x013fff */

    char		_pad_014000[0x18000 - 0x014000];

    /* 0x18000-0x197F8 -- PIC Write Request Ram */
    uint64_t		p_wr_req_lower[256];		/* 0x18000 - 0x187F8 */
    uint64_t		p_wr_req_upper[256];		/* 0x18800 - 0x18FF8 */
    uint64_t		p_wr_req_parity[256];		/* 0x19000 - 0x197F8 */

    char		_pad_019800[0x20000 - 0x019800];

    /* 0x020000-0x027FFF -- PCI Device Configuration Spaces */
    union {
	uint8_t		c[0x1000 / 1];			/* 0x02{0000,,,7FFF} */
	uint16_t	s[0x1000 / 2];			/* 0x02{0000,,,7FFF} */
	uint32_t	l[0x1000 / 4];			/* 0x02{0000,,,7FFF} */
	uint64_t	d[0x1000 / 8];			/* 0x02{0000,,,7FFF} */
	union {
	    uint8_t	c[0x100 / 1];
	    uint16_t	s[0x100 / 2];
	    uint32_t	l[0x100 / 4];
	    uint64_t	d[0x100 / 8];
	} f[8];
    } p_type0_cfg_dev[8];				/* 0x02{0000,,,7FFF} */

    /* 0x028000-0x028FFF -- PCI Type 1 Configuration Space */
    union {
	uint8_t		c[0x1000 / 1];			/* 0x028000-0x029000 */
	uint16_t	s[0x1000 / 2];			/* 0x028000-0x029000 */
	uint32_t	l[0x1000 / 4];			/* 0x028000-0x029000 */
	uint64_t	d[0x1000 / 8];			/* 0x028000-0x029000 */
	union {
	    uint8_t	c[0x100 / 1];
	    uint16_t	s[0x100 / 2];
	    uint32_t	l[0x100 / 4];
	    uint64_t	d[0x100 / 8];
	} f[8];
    } p_type1_cfg;					/* 0x028000-0x029000 */

    char		_pad_029000[0x030000-0x029000];

    /* 0x030000-0x030007 -- PCI Interrupt Acknowledge Cycle */
    union {
	uint8_t		c[8 / 1];
	uint16_t	s[8 / 2];
	uint32_t	l[8 / 4];
	uint64_t	d[8 / 8];
    } p_pci_iack;					/* 0x030000-0x030007 */

    char		_pad_030007[0x040000-0x030008];

    /* 0x040000-0x030007 -- PCIX Special Cycle */
    union {
	uint8_t		c[8 / 1];
	uint16_t	s[8 / 2];
	uint32_t	l[8 / 4];
	uint64_t	d[8 / 8];
    } p_pcix_cycle;					/* 0x040000-0x040007 */
};

#endif                          /* _ASM_IA64_SN_PCI_PIC_H */
OpenPOWER on IntegriCloud