2 * This file is part of the coreboot project.
4 * Copyright (C) 2010 Advanced Micro Devices, Inc.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include <console/console.h>
22 #include <device/device.h>
23 #include <device/pci.h>
24 #include <device/pci_ids.h>
25 #include <device/pci_ops.h>
26 #include <cpu/x86/msr.h>
27 #include <cpu/amd/mtrr.h>
33 * extern function declaration
35 extern void set_pcie_dereset(void);
36 extern void set_pcie_reset(void);
38 /* extension registers */
39 u32 pci_ext_read_config32(device_t nb_dev, device_t dev, u32 reg)
41 /*get BAR3 base address for nbcfg0x1c */
42 u32 addr = pci_read_config32(nb_dev, 0x1c) & ~0xF;
43 printk(BIOS_DEBUG, "addr=%x,bus=%x,devfn=%x\n", addr, dev->bus->secondary,
45 addr |= dev->bus->secondary << 20 | /* bus num */
46 dev->path.pci.devfn << 12 | reg;
47 return *((u32 *) addr);
50 void pci_ext_write_config32(device_t nb_dev, device_t dev, u32 reg_pos, u32 mask, u32 val)
54 /*get BAR3 base address for nbcfg0x1c */
55 u32 addr = pci_read_config32(nb_dev, 0x1c) & ~0xF;
56 /*printk(BIOS_DEBUG, "write: addr=%x,bus=%x,devfn=%x\n", addr, dev->bus->secondary,
57 dev->path.pci.devfn);*/
58 addr |= dev->bus->secondary << 20 | /* bus num */
59 dev->path.pci.devfn << 12 | reg_pos;
61 reg = reg_old = *((u32 *) addr);
65 *((u32 *) addr) = reg;
69 u32 nbpcie_p_read_index(device_t dev, u32 index)
71 return nb_read_index((dev), NBPCIE_INDEX, (index));
74 void nbpcie_p_write_index(device_t dev, u32 index, u32 data)
76 nb_write_index((dev), NBPCIE_INDEX, (index), (data));
79 u32 nbpcie_ind_read_index(device_t nb_dev, u32 index)
81 return nb_read_index((nb_dev), NBPCIE_INDEX, (index));
84 void nbpcie_ind_write_index(device_t nb_dev, u32 index, u32 data)
86 nb_write_index((nb_dev), NBPCIE_INDEX, (index), (data));
89 /***********************************************************
90 * To access bar3 we need to program PCI MMIO 7 in K8.
92 * 1: enable/enter k8 temp mmio base
94 ***********************************************************/
95 void ProgK8TempMmioBase(u8 in_out, u32 pcie_base_add, u32 mmio_base_add)
97 /* K8 Function1 is address map */
99 device_t np = dev_find_slot(0, PCI_DEVFN(0x19, 1));
102 for (node = 0; node < CONFIG_MAX_PHYSICAL_CPUS; node++) {
103 k8_f1 = dev_find_slot(0, PCI_DEVFN(0x18 + node, 1));
109 /* Fill MMIO limit/base pair. */
110 pci_write_config32(k8_f1, 0xbc,
111 (((pcie_base_add + 0x10000000 -
112 1) >> 8) & 0xffffff00) | 0x8 | (np ? 2 << 4 : 0 << 4));
113 pci_write_config32(k8_f1, 0xb8, (pcie_base_add >> 8) | 0x3);
114 pci_write_config32(k8_f1, 0xb4,
115 ((mmio_base_add + 0x10000000 -
116 1) >> 8) | (np ? 2 << 4 : 0 << 4));
117 pci_write_config32(k8_f1, 0xb0, (mmio_base_add >> 8) | 0x3);
119 pci_write_config32(k8_f1, 0xb8, 0);
120 pci_write_config32(k8_f1, 0xbc, 0);
121 pci_write_config32(k8_f1, 0xb0, 0);
122 pci_write_config32(k8_f1, 0xb4, 0);
127 void PcieReleasePortTraining(device_t nb_dev, device_t dev, u32 port)
130 case 2: /* GPP1, bit4-5 */
132 set_nbmisc_enable_bits(nb_dev, PCIE_LINK_CFG,
133 1 << (port + 2), 0 << (port + 2));
135 case 4: /* GPP3a, bit20-24 */
139 set_nbmisc_enable_bits(nb_dev, PCIE_LINK_CFG,
140 1 << (port + 17), 0 << (port + 17));
142 case 9: /* GPP3a, bit25,26 */
144 set_nbmisc_enable_bits(nb_dev, PCIE_LINK_CFG,
145 1 << (port + 16), 0 << (port + 16));
147 case 11: /* GPP2, bit6-7 */
149 set_nbmisc_enable_bits(nb_dev, PCIE_LINK_CFG,
150 1 << (port - 5), 0 << (port - 5));
152 case 13: /* GPP3b, bit4 of NBMISCIND:0x2A */
153 set_nbmisc_enable_bits(nb_dev, 0x2A,
159 /********************************************************************************************************
161 * 0: no device is present.
162 * 1: device is present and is trained.
163 ********************************************************************************************************/
164 u8 PcieTrainPort(device_t nb_dev, device_t dev, u32 port)
167 u32 lc_state, reg, current_link_width, lane_mask;
174 gpp_sb_sel = PCIE_CORE_INDEX_GPP1;
179 gpp_sb_sel = PCIE_CORE_INDEX_GPP3a;
183 gpp_sb_sel = PCIE_CORE_INDEX_GPP2;
186 gpp_sb_sel = PCIE_CORE_INDEX_GPP3b;
192 lc_state = nbpcie_p_read_index(dev, 0xa5); /* lc_state */
193 printk(BIOS_DEBUG, "PcieLinkTraining port=%x:lc current state=%x\n",
195 current = lc_state & 0x3f; /* get LC_CURRENT_STATE, bit0-5 */
198 /* 0x00-0x04 means no device is present */
200 /* read back current link width [6:4]. */
201 current_link_width = (nbpcie_p_read_index(dev, 0xA2) >> 4) & 0x7;
202 /* 4 means 7:4 and 15:12
203 * 3 means 7:2 and 15:10
204 * 2 means 7:1 and 15:9
205 * egnoring the reversal case
207 lane_mask = (0xFF << (current_link_width - 2) * 2) & 0xFF;
208 reg = nbpcie_ind_read_index(nb_dev, 0x65 | gpp_sb_sel);
209 reg |= lane_mask << 8 | lane_mask;
210 /* NOTE: See the comments in rs780_pcie.c
211 * switching_gppsb_configurations
212 * In CIMx 4.5.0 and RPR, 4c is done before 5 & 6.
213 * But in this way, a x4 device in port B (dev 4) of
214 * Configuration B can only be detected as x1, instead
215 * of x4. When the port B is being trained, the
216 * LC_CURRENT_STATE is 6 and the LC_LINK_WIDTH_RD is 1.
217 * We have to set the PCIEIND:0x65 as 0xE0E0 and reset
218 * the slot. Then the card seems to work in x1 mode.
220 reg = 0xE0E0; /*I think that the lane_mask calc above is wrong, and this can't be hardcoded because the configuration changes.*/
221 nbpcie_ind_write_index(nb_dev, 0x65 | gpp_sb_sel, reg);
222 printk(BIOS_DEBUG, "link_width=%x, lane_mask=%x",
223 current_link_width, lane_mask);
228 case 0x07: /* device is in compliance state (training sequence is done). Move to train the next device */
234 pci_ext_read_config32(nb_dev, dev,
235 PCIE_VC0_RESOURCE_STATUS);
236 printk(BIOS_DEBUG, "PcieTrainPort reg=0x%x\n", reg);
238 if (reg & VC_NEGOTIATION_PENDING) { /* bit1=1 means the link needs to be re-trained. */
239 /* set bit8=1, bit0-2=bit4-6 */
242 nbpcie_p_read_index(dev,
244 tmp = (reg >> 4) && 0x3; /* get bit4-6 */
245 reg &= 0xfff8; /* clear bit0-2 */
246 reg += tmp; /* merge */
248 count++; /* CIM said "keep in loop"? */
255 /* CIMx Unknown Workaround - There is a device that won't train. Try to reset it. */
256 /* if there are no device resets and nothing works, CIMx does a cf9 system reset (yikes!) */
261 count = 0; /* break loop */
269 * Set Top Of Memory below and above 4G.
271 void sr5650_set_tom(device_t nb_dev)
275 /* The system top memory in SR56X0. */
276 sysmem = rdmsr(0xc001001A);
277 printk(BIOS_DEBUG, "Sysmem TOM = %x_%x\n", sysmem.hi, sysmem.lo);
278 pci_write_config32(nb_dev, 0x90, sysmem.lo);
280 sysmem = rdmsr(0xc001001D);
281 printk(BIOS_DEBUG, "Sysmem TOM2 = %x_%x\n", sysmem.hi, sysmem.lo);
282 htiu_write_index(nb_dev, 0x31, sysmem.hi);
283 htiu_write_index(nb_dev, 0x30, sysmem.lo | 1);
286 u32 get_vid_did(device_t dev)
288 return pci_read_config32(dev, 0);
291 void sr5650_nb_pci_table(device_t nb_dev)
292 { /* NBPOR_InitPOR function. */
297 /* Program NB PCI table. */
298 temp16 = pci_read_config16(nb_dev, 0x04);
299 printk(BIOS_DEBUG, "NB_PCI_REG04 = %x.\n", temp16);
300 temp32 = pci_read_config32(nb_dev, 0x84);
301 printk(BIOS_DEBUG, "NB_PCI_REG84 = %x.\n", temp32);
302 //Reg4Ch[1]=1 (APIC_ENABLE) force cpu request with address 0xFECx_xxxx to south-bridge
303 //Reg4Ch[6]=1 (BMMsgEn) enable BM_Set message generation
304 pci_write_config8(nb_dev, 0x4c, 0x42);
305 temp8 = pci_read_config8(nb_dev, 0x4e);
306 temp8 |= 0x05; /* BAR1_ENABLE */
307 pci_write_config8(nb_dev, 0x4e, temp8);
309 temp32 = pci_read_config32(nb_dev, 0x4c);
310 printk(BIOS_DEBUG, "NB_PCI_REG4C = %x.\n", temp32);
312 /* disable GFX debug. */
313 temp8 = pci_read_config8(nb_dev, 0x8d);
315 pci_write_config8(nb_dev, 0x8d, temp8);
317 /* The system top memory in SR56X0. */
318 sr5650_set_tom(nb_dev);
320 /* Program NB HTIU table. */
321 //set_htiu_enable_bits(nb_dev, 0x05, 1<<10 | 1<<9, 1<<10|1<<9);
322 set_htiu_enable_bits(nb_dev, 0x06, 1, 0x4203a202);
323 //set_htiu_enable_bits(nb_dev, 0x07, 1<<1 | 1<<2, 0x8001);
324 set_htiu_enable_bits(nb_dev, 0x15, 0, 1<<31 | 1<<30 | 1<<27);
325 set_htiu_enable_bits(nb_dev, 0x1c, 0, 0xfffe0000);
326 set_htiu_enable_bits(nb_dev, 0x0c, 0x3f, 1 | 1<<3);
327 set_htiu_enable_bits(nb_dev, 0x19, 0xfffff+(1<<31), 0x186a0+(1<<31));
328 set_htiu_enable_bits(nb_dev, 0x16, 0x3f<<10, 0x7<<10);
329 set_htiu_enable_bits(nb_dev, 0x23, 0, 1<<28);
332 /***********************************************
334 * 0:00.1 CLK : bit 0 of nb_cfg 0x4c : 0 - disable, default
335 * 0:01.0 P2P Internal:
336 * 0:02.0 P2P : bit 2 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
337 * 0:03.0 P2P : bit 3 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
338 * 0:04.0 P2P : bit 4 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
339 * 0:05.0 P2P : bit 5 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
340 * 0:06.0 P2P : bit 6 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
341 * 0:07.0 P2P : bit 7 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
342 * 0:08.0 NB2SB : bit 6 of nbmiscind 0x00 : 0 - disable, default + 32 * 1
343 * case 0 will be called twice, one is by cpu in hypertransport.c line458,
344 * the other is by sr5650.
345 ***********************************************/
346 void sr5650_enable(device_t dev)
348 device_t nb_dev = 0, sb_dev = 0;
351 printk(BIOS_INFO, "sr5650_enable: dev=%p, VID_DID=0x%x\n", dev, get_vid_did(dev));
352 nb_dev = dev_find_slot(0, PCI_DEVFN(0, 0));
354 die("sr5650_enable: CAN NOT FIND SR5650 DEVICE, HALT!\n");
358 /* sb_dev (dev 8) is a bridge that links to southbridge. */
359 sb_dev = dev_find_slot(0, PCI_DEVFN(8, 0));
361 die("sr5650_enable: CAN NOT FIND SB bridge, HALT!\n");
365 dev_ind = dev->path.pci.devfn >> 3;
367 case 0: /* bus0, dev0, fun0; */
368 printk(BIOS_INFO, "Bus-0, Dev-0, Fun-0.\n");
369 enable_pcie_bar3(nb_dev); /* PCIEMiscInit */
371 config_gpp_core(nb_dev, sb_dev);
372 sr5650_gpp_sb_init(nb_dev, sb_dev, 8);
374 sr5650_nb_pci_table(nb_dev);
377 case 2: /* bus0, dev2,3 GPP1 */
379 printk(BIOS_INFO, "Bus-0, Dev-2,3, Fun-0. enable=%d\n", dev->enabled);
380 set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << dev_ind,
381 (dev->enabled ? 0 : 1) << dev_ind);
383 sr5650_gpp_sb_init(nb_dev, dev, dev_ind); /* Note, dev 2,3 are generic PCIe ports. */
385 case 4: /* bus0, dev4-7, four GPP3a */
389 enable_pcie_bar3(nb_dev); /* PCIEMiscInit */
390 printk(BIOS_INFO, "Bus-0, Dev-4,5,6,7, Fun-0. enable=%d\n",
392 set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << dev_ind,
393 (dev->enabled ? 0 : 1) << dev_ind);
395 sr5650_gpp_sb_init(nb_dev, dev, dev_ind);
397 case 8: /* bus0, dev8, SB */
398 printk(BIOS_INFO, "Bus-0, Dev-8, Fun-0. enable=%d\n", dev->enabled);
399 set_nbmisc_enable_bits(nb_dev, 0x00, 1 << 6,
400 (dev->enabled ? 1 : 0) << 6);
402 sr5650_gpp_sb_init(nb_dev, dev, dev_ind);
403 disable_pcie_bar3(nb_dev);
405 case 9: /* bus 0, dev 9,10, GPP3a */
407 printk(BIOS_INFO, "Bus-0, Dev-9, 10, Fun-0. enable=%d\n",
409 enable_pcie_bar3(nb_dev); /* PCIEMiscInit */
410 set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << (7 + dev_ind),
411 (dev->enabled ? 0 : 1) << (7 + dev_ind));
413 sr5650_gpp_sb_init(nb_dev, dev, dev_ind);
414 /* Dont call disable_pcie_bar3(nb_dev) here, otherwise the screen will crash. */
417 case 12: /* bus 0, dev 11,12, GPP2 */
418 printk(BIOS_INFO, "Bus-0, Dev-11,12, Fun-0. enable=%d\n", dev->enabled);
419 set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << (7 + dev_ind),
420 (dev->enabled ? 0 : 1) << (7 + dev_ind));
422 sr5650_gpp_sb_init(nb_dev, dev, dev_ind);
424 case 13: /* bus 0, dev 12, GPP3b */
425 set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << (7 + dev_ind),
426 (dev->enabled ? 0 : 1) << (7 + dev_ind));
428 sr5650_gpp_sb_init(nb_dev, dev, dev_ind);
431 printk(BIOS_DEBUG, "unknown dev: %s\n", dev_path(dev));
434 /* Lock HWInit Register after the last device was done */
436 sr56x0_lock_hwinitreg();
440 struct chip_operations southbridge_amd_sr5650_ops = {
441 CHIP_NAME("ATI SR5650")
442 .enable_dev = sr5650_enable,