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
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* 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; version 2 of the License.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <delay.h>
#include "rs690.h"
/*------------------------------------------------
* Global variable
------------------------------------------------*/
PCIE_CFG AtiPcieCfg = {
PCIE_ENABLE_STATIC_DEV_REMAP, /* Config */
0, /* ResetReleaseDelay */
0, /* Gfx0Width */
0, /* Gfx1Width */
0, /* GfxPayload */
0, /* GppPayload */
0, /* PortDetect, filled by GppSbInit */
0, /* PortHp */
0, /* DbgConfig */
0, /* DbgConfig2 */
0, /* GfxLx */
0, /* GppLx */
0, /* NBSBLx */
0, /* PortSlotInit */
0, /* Gfx0Pwr */
0, /* Gfx1Pwr */
0 /* GppPwr */
};
static void PciePowerOffGppPorts(device_t nb_dev, device_t dev, u32 port);
static void ValidatePortEn(device_t nb_dev);
static void ValidatePortEn(device_t nb_dev)
{
}
/*****************************************************************
* Compliant with CIM_33's PCIEPowerOffGppPorts
* Power off unused GPP lines
*****************************************************************/
static void PciePowerOffGppPorts(device_t nb_dev, device_t dev, u32 port)
{
u32 reg;
u16 state_save;
struct southbridge_amd_rs690_config *cfg =
(struct southbridge_amd_rs690_config *)nb_dev->chip_info;
u8 state = cfg->port_enable;
if (!(AtiPcieCfg.Config & PCIE_DISABLE_HIDE_UNUSED_PORTS))
state &= AtiPcieCfg.PortDetect;
state = ~state;
state &= (1 << 4) + (1 << 5) + (1 << 6) + (1 << 7);
state_save = state << 17;
state &= !(AtiPcieCfg.PortHp);
reg = nbmisc_read_index(nb_dev, 0x0c);
reg |= state;
nbmisc_write_index(nb_dev, 0x0c, reg);
reg = nbmisc_read_index(nb_dev, 0x08);
reg |= state_save;
nbmisc_write_index(nb_dev, 0x08, reg);
if ((AtiPcieCfg.Config & PCIE_OFF_UNUSED_GPP_LANES)
&& !(AtiPcieCfg.
Config & (PCIE_DISABLE_HIDE_UNUSED_PORTS +
PCIE_GFX_COMPLIANCE))) {
}
/* step 3 Power Down Control for Southbridge */
reg = nbpcie_p_read_index(dev, 0xa2);
switch ((reg >> 4) & 0x7) { /* get bit 4-6, LC_LINK_WIDTH_RD */
case 1:
nbpcie_ind_write_index(nb_dev, 0x65, 0x0e0e);
break;
case 2:
nbpcie_ind_write_index(nb_dev, 0x65, 0x0c0c);
break;
default:
break;
}
}
static void pcie_init(struct device *dev)
{
/* Enable pci error detecting */
u32 dword;
printk_debug("pcie_init in rs690_pcie.c\n");
/* System error enable */
dword = pci_read_config32(dev, 0x04);
dword |= (1 << 8); /* System error enable */
dword |= (1 << 30); /* Clear possible errors */
pci_write_config32(dev, 0x04, dword);
}
/**********************************************************************
**********************************************************************/
static void switching_gpp_configurations(device_t nb_dev, device_t sb_dev)
{
u32 reg;
struct southbridge_amd_rs690_config *cfg =
(struct southbridge_amd_rs690_config *)nb_dev->chip_info;
/* enables GPP reconfiguration */
reg = nbmisc_read_index(nb_dev, PCIE_NBCFG_REG7);
reg |=
(RECONFIG_GPPSB_EN + RECONFIG_GPPSB_LINK_CONFIG +
RECONFIG_GPPSB_ATOMIC_RESET);
nbmisc_write_index(nb_dev, PCIE_NBCFG_REG7, reg);
/* sets desired GPPSB configurations, bit4-7 */
reg = nbmisc_read_index(nb_dev, 0x67);
reg &= 0xffffff0f; /* clean */
reg |= cfg->gpp_configuration << 4;
nbmisc_write_index(nb_dev, 0x67, reg);
/* read bit14 and write back its inverst value */
reg = nbmisc_read_index(nb_dev, PCIE_NBCFG_REG7);
reg ^= RECONFIG_GPPSB_GPPSB;
nbmisc_write_index(nb_dev, PCIE_NBCFG_REG7, reg);
/* delay 1ms */
mdelay(1);
/* waits until SB has trained to L0, poll for bit0-5 = 0x10 */
do {
reg = nbpcie_p_read_index(sb_dev, PCIE_LC_STATE0);
reg &= 0x1f; /* remain LSB 5 bits */
} while (LC_STATE_RECONFIG_GPPSB != reg);
/* ensures that virtual channel negotiation is completed. poll for bit1 = 0 */
do {
reg =
pci_ext_read_config32(nb_dev, sb_dev,
PCIE_VC0_RESOURCE_STATUS);
} while (reg & VC_NEGOTIATION_PENDING);
}
/*****************************************************************
* The rs690 uses NBCONFIG:0x1c (BAR3) to map the PCIE Extended Configuration
* Space to a 256MB range within the first 4GB of addressable memory.
*****************************************************************/
void enable_pcie_bar3(device_t nb_dev)
{
printk_debug("enable_pcie_bar3()\n");
set_nbcfg_enable_bits(nb_dev, 0x7C, 1 << 30, 1 << 30); /* Enables writes to the BAR3 register. */
set_nbcfg_enable_bits(nb_dev, 0x84, 7 << 16, 0 << 16);
pci_write_config32(nb_dev, 0x1C, EXT_CONF_BASE_ADDRESS); /* PCIEMiscInit */
pci_write_config32(nb_dev, 0x20, 0x00000000);
set_htiu_enable_bits(nb_dev, 0x32, 1 << 28, 1 << 28); /* PCIEMiscInit */
ProgK8TempMmioBase(1, EXT_CONF_BASE_ADDRESS, TEMP_MMIO_BASE_ADDRESS);
}
/*****************************************************************
* We should disable bar3 when we want to exit rs690_enable, because bar3 will be
* remapped in set_resource later.
*****************************************************************/
void disable_pcie_bar3(device_t nb_dev)
{
printk_debug("disable_pcie_bar3()\n");
set_nbcfg_enable_bits(nb_dev, 0x7C, 1 << 30, 0 << 30); /* Disable writes to the BAR3. */
pci_write_config32(nb_dev, 0x1C, 0); /* clear BAR3 address */
ProgK8TempMmioBase(0, EXT_CONF_BASE_ADDRESS, TEMP_MMIO_BASE_ADDRESS);
}
/*****************************************
* Compliant with CIM_33's PCIEGPPInit
* nb_dev:
* root bridge struct
* dev:
* p2p bridge struct
* port:
* p2p bridge number, 4-8
*****************************************/
void rs690_gpp_sb_init(device_t nb_dev, device_t dev, u32 port)
{
u8 reg8;
u16 reg16;
device_t sb_dev;
struct southbridge_amd_rs690_config *cfg =
(struct southbridge_amd_rs690_config *)nb_dev->chip_info;
printk_debug("gpp_sb_init nb_dev=0x%x, dev=0x%x, port=0x%x\n", nb_dev, dev, port);
/* init GPP core */
set_pcie_enable_bits(nb_dev, 0x20 | PCIE_CORE_INDEX_GPPSB, 1 << 8,
1 << 8);
/* PCIE initialization 5.10.2: rpr 2.12*/
set_pcie_enable_bits(nb_dev, 0x02 | PCIE_CORE_INDEX_GPPSB, 1 << 0, 1 << 0); /* no description in datasheet. */
/* init GPPSB port */
/* Sets RCB timeout to be 100ms by setting bits[18:16] to 3 b101 and shortens the enumeration timer by setting bit[19] to 0*/
set_pcie_enable_bits(dev, 0x70, 7 << 16, 0xd << 16);
/* PCIE initialization 5.10.2: rpr 2.4 */
set_pcie_enable_bits(dev, 0x02, ~0xffffffff, 1 << 14);
/* Do not gate the electrical idle from the PHY and enables the escape from L1L23 */
set_pcie_enable_bits(dev, 0xA0, ~0xffffffbf, (3 << 30) | (3 << 12) | (3 << 4));
/* PCIE initialization 5.10.2: rpr 2.13 */
set_pcie_enable_bits(dev, 0x02, ~0xffffffff, 1 << 6);
/* SLOT_IMPLEMENTED in pcieConfig space */
reg8 = pci_read_config8(dev, 0x5b);
reg8 |= 1 << 0;
pci_write_config8(dev, 0x5b, reg8);
reg16 = pci_read_config16(dev, 0x5a);
reg16 |= 0x100;
pci_write_config16(dev, 0x5a, reg16);
nbmisc_write_index(nb_dev, 0x34, 0);
/* check compliance rpr step 2.1*/
if (AtiPcieCfg.Config & PCIE_GPP_COMPLIANCE) {
u32 tmp;
tmp = nbmisc_read_index(nb_dev, 0x67);
tmp |= 1 << 3;
nbmisc_write_index(nb_dev, 0x67, tmp);
}
/* step 5: dynamic slave CPL buffer allocation */
set_pcie_enable_bits(dev, 0x20, 1 << 11, 1 << 11);
/* step 5a: Training for GPP devices */
/* init GPP */
switch (port) {
case 4: /* GPP */
case 5:
case 6:
case 7:
/* Blocks DMA traffic during C3 state */
set_pcie_enable_bits(dev, 0x10, 1 << 0, 0 << 0);
/* Enabels TLP flushing */
set_pcie_enable_bits(dev, 0x20, 1 << 19, 0 << 19);
/* check port enable */
if (cfg->port_enable & (1 << port)) {
PcieReleasePortTraining(nb_dev, dev, port);
if (!(AtiPcieCfg.Config & PCIE_GPP_COMPLIANCE)) {
u8 res = PcieTrainPort(nb_dev, dev, port);
printk_debug("PcieTrainPort port=0x%x result=%d\n", port, res);
if (res) {
AtiPcieCfg.PortDetect |= 1 << port;
}
}
}
break;
case 8: /* SB */
break;
}
PciePowerOffGppPorts(nb_dev, dev, port);
/* step 5b: GFX devices in a GPP slot */
/* step 6a: VCI */
sb_dev = dev_find_slot(0, PCI_DEVFN(8, 0));
if (port == 8) {
/* Clear bits 7:1 */
pci_ext_write_config32(nb_dev, sb_dev, 0x114, 0x3f << 1, 0 << 1);
/* Maps Traffic Class 1-7 to VC1 */
pci_ext_write_config32(nb_dev, sb_dev, 0x120, 0x7f << 1, 0x7f << 1);
/* Assigns VC ID to 1 */
pci_ext_write_config32(nb_dev, sb_dev, 0x120, 7 << 24, 1 << 24);
/* Enables VC1 */
pci_ext_write_config32(nb_dev, sb_dev, 0x120, 1 << 31, 1 << 31);
#if 0
do {
reg16 = pci_ext_read_config32(nb_dev, sb_dev, 0x124);
reg16 &= 0x2;
} while (reg16); /*bit[1] = 0 means VC1 flow control initialization is successful */
#endif
}
/* step 6b: L0s for the southbridge link */
/* To enalbe L0s in the southbridage*/
/* step 6c: L0s for the GPP link(s) */
/* To eable L0s in the RS690 for the GPP port(s) */
set_pcie_enable_bits(nb_dev, 0xf9, 3 << 13, 2 << 13);
set_pcie_enable_bits(dev, 0xa0, 0xf << 8, 0x9 << 8);
reg16 = pci_read_config16(dev, 0x68);
reg16 |= 1 << 0;
pci_write_config16(dev, 0x68, reg16);
/* step 6d: ASPM L1 for the southbridge link */
/* To enalbe L1s in the southbridage*/
/* step 6e: ASPM L1 for GPP link(s) */;
set_pcie_enable_bits(nb_dev, 0xf9, 3 << 13, 2 << 13);
set_pcie_enable_bits(dev, 0xa0, 3 << 12, 3 << 12);
set_pcie_enable_bits(dev, 0xa0, 0xf << 4, 3 << 4);
reg16 = pci_read_config16(dev, 0x68);
reg16 &= ~0xff;
reg16 |= 1 << 1;
pci_write_config16(dev, 0x68, reg16);
/* step 6f: Turning off PLL during L1/L23 */
set_pcie_enable_bits(nb_dev, 0x40, 1 << 3, 1 << 3);
set_pcie_enable_bits(nb_dev, 0x40, 1 << 9, 1 << 9);
/* step 6g: TXCLK clock gating */
set_nbmisc_enable_bits(nb_dev, 0x7, 3 << 4, 3 << 4);
set_nbmisc_enable_bits(nb_dev, 0x7, 1 << 22, 1 << 22);
set_pcie_enable_bits(nb_dev, 0x11, 0xf << 4, 0xc << 4);
/* step 6h: LCLK clock gating, done in rs690_config_misc_clk() */
}
/*****************************************
* Compliant with CIM_33's PCIEConfigureGPPCore
*****************************************/
void config_gpp_core(device_t nb_dev, device_t sb_dev)
{
u32 reg;
struct southbridge_amd_rs690_config *cfg =
(struct southbridge_amd_rs690_config *)nb_dev->chip_info;
reg = nbmisc_read_index(nb_dev, 0x20);
if (AtiPcieCfg.Config & PCIE_ENABLE_STATIC_DEV_REMAP)
reg &= 0xfffffffd; /* set bit1 = 0 */
else
reg |= 0x2; /* set bit1 = 1 */
nbmisc_write_index(nb_dev, 0x20, reg);
reg = nbmisc_read_index(nb_dev, 0x67); /* get STRAP_BIF_LINK_CONFIG_GPPSB at bit 4-7 */
if (cfg->gpp_configuration != ((reg >> 4) & 0xf))
switching_gpp_configurations(nb_dev, sb_dev);
ValidatePortEn(nb_dev);
}
/*****************************************
* Compliant with CIM_33's PCIEMiscClkProg
*****************************************/
void pcie_config_misc_clk(device_t nb_dev)
{
u32 reg;
struct bus pbus; /* fake bus for dev0 fun1 */
reg = pci_read_config32(nb_dev, 0x4c);
reg |= 1 << 0;
pci_write_config32(nb_dev, 0x4c, reg);
if (AtiPcieCfg.Config & PCIE_GFX_CLK_GATING) {
/* TXCLK Clock Gating */
set_nbmisc_enable_bits(nb_dev, 0x07, 3 << 0, 3 << 0);
set_nbmisc_enable_bits(nb_dev, 0x07, 1 << 22, 1 << 22);
set_pcie_enable_bits(nb_dev, 0x11 | PCIE_CORE_INDEX_GFX, (3 << 6) | (~0xf), 3 << 6);
/* LCLK Clock Gating */
reg = pci_cf8_conf1.read32(&pbus, 0, 1, 0x94);
reg &= ~(1 << 16);
pci_cf8_conf1.write32(&pbus, 0, 1, 0x94, reg);
}
if (AtiPcieCfg.Config & PCIE_GPP_CLK_GATING) {
/* TXCLK Clock Gating */
set_nbmisc_enable_bits(nb_dev, 0x07, 3 << 4, 3 << 4);
set_nbmisc_enable_bits(nb_dev, 0x07, 1 << 22, 1 << 22);
set_pcie_enable_bits(nb_dev, 0x11 | PCIE_CORE_INDEX_GPPSB, (3 << 6) | (~0xf), 3 << 6);
/* LCLK Clock Gating */
reg = pci_cf8_conf1.read32(&pbus, 0, 1, 0x94);
reg &= ~(1 << 24);
pci_cf8_conf1.write32(&pbus, 0, 1, 0x94, reg);
}
reg = pci_read_config32(nb_dev, 0x4c);
reg &= ~(1 << 0);
pci_write_config32(nb_dev, 0x4c, reg);
}
|