2 * This file is part of the coreboot project.
4 * Copyright (C) 2008 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>
24 #include <device/device.h>
25 #include <device/pci.h>
26 #include <device/pci_ids.h>
27 #include <device/pci_ops.h>
28 #include <cpu/x86/msr.h>
29 #include <cpu/amd/mtrr.h>
30 #include <boot/coreboot_tables.h>
34 static u32 nb_read_index(device_t dev, u32 index_reg, u32 index)
36 pci_write_config32(dev, index_reg, index);
37 return pci_read_config32(dev, index_reg + 0x4);
40 static void nb_write_index(device_t dev, u32 index_reg, u32 index, u32 data)
43 pci_write_config32(dev, index_reg, index);
44 pci_write_config32(dev, index_reg + 0x4, data);
48 /* extension registers */
49 u32 pci_ext_read_config32(device_t nb_dev, device_t dev, u32 reg)
51 /*get BAR3 base address for nbcfg0x1c */
52 u32 addr = pci_read_config32(nb_dev, 0x1c) & ~0xF;
53 printk_debug("addr=%x,bus=%x,devfn=%x\n", addr, dev->bus->secondary,
55 addr |= dev->bus->secondary << 20 | /* bus num */
56 dev->path.pci.devfn << 12 | reg;
57 return *((u32 *) addr);
60 void pci_ext_write_config32(device_t nb_dev, device_t dev, u32 reg_pos, u32 mask, u32 val)
64 /*get BAR3 base address for nbcfg0x1c */
65 u32 addr = pci_read_config32(nb_dev, 0x1c) & ~0xF;
66 /*printk_debug("write: addr=%x,bus=%x,devfn=%x\n", addr, dev->bus->secondary,
67 dev->path.pci.devfn);*/
68 addr |= dev->bus->secondary << 20 | /* bus num */
69 dev->path.pci.devfn << 12 | reg_pos;
71 reg = reg_old = *((u32 *) addr);
75 *((u32 *) addr) = val;
79 u32 nbmisc_read_index(device_t nb_dev, u32 index)
81 return nb_read_index((nb_dev), NBMISC_INDEX, (index));
84 void nbmisc_write_index(device_t nb_dev, u32 index, u32 data)
86 nb_write_index((nb_dev), NBMISC_INDEX, ((index) | 0x80), (data));
89 u32 nbpcie_p_read_index(device_t dev, u32 index)
91 return nb_read_index((dev), NBPCIE_INDEX, (index));
94 void nbpcie_p_write_index(device_t dev, u32 index, u32 data)
96 nb_write_index((dev), NBPCIE_INDEX, (index), (data));
99 u32 nbpcie_ind_read_index(device_t nb_dev, u32 index)
101 return nb_read_index((nb_dev), NBPCIE_INDEX, (index));
104 void nbpcie_ind_write_index(device_t nb_dev, u32 index, u32 data)
106 nb_write_index((nb_dev), NBPCIE_INDEX, (index), (data));
109 u32 htiu_read_index(device_t nb_dev, u32 index)
111 return nb_read_index((nb_dev), NBHTIU_INDEX, (index));
114 void htiu_write_index(device_t nb_dev, u32 index, u32 data)
116 nb_write_index((nb_dev), NBHTIU_INDEX, ((index) | 0x100), (data));
119 u32 nbmc_read_index(device_t nb_dev, u32 index)
121 return nb_read_index((nb_dev), NBMC_INDEX, (index));
124 void nbmc_write_index(device_t nb_dev, u32 index, u32 data)
126 nb_write_index((nb_dev), NBMC_INDEX, ((index) | 1 << 9), (data));
129 void set_nbcfg_enable_bits(device_t nb_dev, u32 reg_pos, u32 mask, u32 val)
132 reg = reg_old = pci_read_config32(nb_dev, reg_pos);
135 if (reg != reg_old) {
136 pci_write_config32(nb_dev, reg_pos, reg);
140 void set_nbcfg_enable_bits_8(device_t nb_dev, u32 reg_pos, u8 mask, u8 val)
143 reg = reg_old = pci_read_config8(nb_dev, reg_pos);
146 if (reg != reg_old) {
147 pci_write_config8(nb_dev, reg_pos, reg);
151 void set_nbmc_enable_bits(device_t nb_dev, u32 reg_pos, u32 mask, u32 val)
154 reg = reg_old = nbmc_read_index(nb_dev, reg_pos);
157 if (reg != reg_old) {
158 nbmc_write_index(nb_dev, reg_pos, reg);
162 void set_htiu_enable_bits(device_t nb_dev, u32 reg_pos, u32 mask, u32 val)
165 reg = reg_old = htiu_read_index(nb_dev, reg_pos);
168 if (reg != reg_old) {
169 htiu_write_index(nb_dev, reg_pos, reg);
173 void set_nbmisc_enable_bits(device_t nb_dev, u32 reg_pos, u32 mask, u32 val)
176 reg = reg_old = nbmisc_read_index(nb_dev, reg_pos);
179 if (reg != reg_old) {
180 nbmisc_write_index(nb_dev, reg_pos, reg);
184 void set_pcie_enable_bits(device_t dev, u32 reg_pos, u32 mask, u32 val)
187 reg = reg_old = nb_read_index(dev, NBPCIE_INDEX, reg_pos);
190 if (reg != reg_old) {
191 nb_write_index(dev, NBPCIE_INDEX, reg_pos, reg);
195 /***********************************************************
196 * To access bar3 we need to program PCI MMIO 7 in K8.
198 * 1: enable/enter k8 temp mmio base
200 ***********************************************************/
201 void ProgK8TempMmioBase(u8 in_out, u32 pcie_base_add, u32 mmio_base_add)
203 /* K8 Function1 is address map */
204 device_t k8_f1 = dev_find_slot(0, PCI_DEVFN(0x18, 1));
207 pci_write_config32(k8_f1, 0xbc,
208 (((pcie_base_add + 0x10000000 -
209 1) >> 8) & 0xffffff00) | 0x8);
210 pci_write_config32(k8_f1, 0xb8, (pcie_base_add >> 8) | 0x3);
211 pci_write_config32(k8_f1, 0xb4,
212 ((mmio_base_add + 0x10000000 -
213 1) >> 8) & 0xffffff00);
214 pci_write_config32(k8_f1, 0xb0, (mmio_base_add >> 8) | 0x3);
216 pci_write_config32(k8_f1, 0xb8, 0);
217 pci_write_config32(k8_f1, 0xbc, 0);
218 pci_write_config32(k8_f1, 0xb0, 0);
219 pci_write_config32(k8_f1, 0xb4, 0);
223 void PcieReleasePortTraining(device_t nb_dev, device_t dev, u32 port)
226 case 2: /* GFX, bit4-5 */
228 set_nbmisc_enable_bits(nb_dev, PCIE_LINK_CFG,
229 1 << (port + 2), 0 << (port + 2));
231 case 4: /* GPP, bit20-24 */
235 set_nbmisc_enable_bits(nb_dev, PCIE_LINK_CFG,
236 1 << (port + 17), 0 << (port + 17));
241 /********************************************************************************************************
243 * 0: no device is present.
244 * 1: device is present and is trained.
245 ********************************************************************************************************/
246 u8 PcieTrainPort(device_t nb_dev, device_t dev, u32 port)
250 int8_t current, res = 0;
255 lc_state = nbpcie_p_read_index(dev, 0xa5); /* lc_state */
256 printk_debug("PcieLinkTraining port=%x:lc current state=%x\n",
258 current = lc_state & 0x3f; /* get LC_CURRENT_STATE, bit0-5 */
261 case 0x00: /* 0x00-0x04 means no device is present */
269 case 0x07: /* device is in compliance state (training sequence is doen). Move to train the next device */
270 res = 1; /* TODO: CIM sets it to 0 */
275 pci_ext_read_config32(nb_dev, dev,
276 PCIE_VC0_RESOURCE_STATUS);
277 printk_debug("PcieTrainPort reg=0x%x\n", reg);
279 if (reg & VC_NEGOTIATION_PENDING) { /* bit1=1 means the link needs to be re-trained. */
280 /* set bit8=1, bit0-2=bit4-6 */
283 nbpcie_p_read_index(dev,
285 tmp = (reg >> 4) && 0x3; /* get bit4-6 */
286 reg &= 0xfff8; /* clear bit0-2 */
287 reg += tmp; /* merge */
289 count++; /* CIM said "keep in loop"? */
295 default: /* reset pcie */
297 count = 0; /* break loop */
305 * Compliant with CIM_33's ATINB_SetToms.
306 * Set Top Of Memory below and above 4G.
308 void rs690_set_tom(device_t nb_dev)
310 extern uint64_t uma_memory_base;
313 pci_write_config32(nb_dev, 0x90, uma_memory_base);
314 nbmc_write_index(nb_dev, 0x1e, uma_memory_base);