Minghuan Lian | da41902 | 2014-10-31 13:43:44 +0800 | [diff] [blame] | 1 | /* |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 2 | * Copyright 2014-2015 Freescale Semiconductor, Inc. |
Minghuan Lian | da41902 | 2014-10-31 13:43:44 +0800 | [diff] [blame] | 3 | * Layerscape PCIe driver |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | */ |
| 7 | |
| 8 | #include <common.h> |
| 9 | #include <asm/arch/fsl_serdes.h> |
| 10 | #include <pci.h> |
| 11 | #include <asm/io.h> |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 12 | #include <errno.h> |
| 13 | #include <malloc.h> |
Mingkai Hu | af523a0 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 14 | #ifndef CONFIG_LS102XA |
Mingkai Hu | 9f3183d | 2015-10-26 19:47:50 +0800 | [diff] [blame] | 15 | #include <asm/arch/fdt.h> |
Mingkai Hu | af523a0 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 16 | #include <asm/arch/soc.h> |
Hou Zhiqiang | a7294ab | 2016-12-13 14:54:16 +0800 | [diff] [blame^] | 17 | #else |
| 18 | #include <asm/arch/immap_ls102xa.h> |
Mingkai Hu | 9f3183d | 2015-10-26 19:47:50 +0800 | [diff] [blame] | 19 | #endif |
Hou Zhiqiang | a7294ab | 2016-12-13 14:54:16 +0800 | [diff] [blame^] | 20 | #include "pcie_layerscape.h" |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 21 | |
| 22 | #ifdef CONFIG_LS102XA |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 23 | /* PEX1/2 Misc Ports Status Register */ |
| 24 | #define LTSSM_STATE_SHIFT 20 |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 25 | |
| 26 | static int ls_pcie_link_state(struct ls_pcie *pcie) |
| 27 | { |
| 28 | u32 state; |
| 29 | struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR; |
| 30 | |
| 31 | state = in_be32(&scfg->pexmscportsr[pcie->idx]); |
| 32 | state = (state >> LTSSM_STATE_SHIFT) & LTSSM_STATE_MASK; |
| 33 | if (state < LTSSM_PCIE_L0) { |
| 34 | debug("....PCIe link error. LTSSM=0x%02x.\n", state); |
| 35 | return 0; |
| 36 | } |
| 37 | |
| 38 | return 1; |
| 39 | } |
| 40 | #else |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 41 | static int ls_pcie_link_state(struct ls_pcie *pcie) |
| 42 | { |
| 43 | u32 state; |
| 44 | |
Mingkai Hu | af523a0 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 45 | state = pex_lut_in32(pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_DBG) & |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 46 | LTSSM_STATE_MASK; |
| 47 | if (state < LTSSM_PCIE_L0) { |
| 48 | debug("....PCIe link error. LTSSM=0x%02x.\n", state); |
| 49 | return 0; |
| 50 | } |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 51 | |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 52 | return 1; |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 53 | } |
| 54 | #endif |
| 55 | |
| 56 | static int ls_pcie_link_up(struct ls_pcie *pcie) |
| 57 | { |
| 58 | int state; |
| 59 | u32 cap; |
| 60 | |
| 61 | state = ls_pcie_link_state(pcie); |
| 62 | if (state) |
| 63 | return state; |
| 64 | |
| 65 | /* Try to download speed to gen1 */ |
| 66 | cap = readl(pcie->dbi + PCIE_LINK_CAP); |
| 67 | writel((cap & (~PCIE_LINK_SPEED_MASK)) | 1, pcie->dbi + PCIE_LINK_CAP); |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 68 | /* |
| 69 | * Notice: the following delay has critical impact on link training |
| 70 | * if too short (<30ms) the link doesn't get up. |
| 71 | */ |
| 72 | mdelay(100); |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 73 | state = ls_pcie_link_state(pcie); |
| 74 | if (state) |
| 75 | return state; |
| 76 | |
| 77 | writel(cap, pcie->dbi + PCIE_LINK_CAP); |
| 78 | |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | static void ls_pcie_cfg0_set_busdev(struct ls_pcie *pcie, u32 busdev) |
| 83 | { |
| 84 | writel(PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX0, |
| 85 | pcie->dbi + PCIE_ATU_VIEWPORT); |
| 86 | writel(busdev, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 87 | } |
| 88 | |
| 89 | static void ls_pcie_cfg1_set_busdev(struct ls_pcie *pcie, u32 busdev) |
| 90 | { |
| 91 | writel(PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX1, |
| 92 | pcie->dbi + PCIE_ATU_VIEWPORT); |
| 93 | writel(busdev, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 94 | } |
| 95 | |
| 96 | static void ls_pcie_iatu_outbound_set(struct ls_pcie *pcie, int idx, int type, |
| 97 | u64 phys, u64 bus_addr, pci_size_t size) |
| 98 | { |
| 99 | writel(PCIE_ATU_REGION_OUTBOUND | idx, pcie->dbi + PCIE_ATU_VIEWPORT); |
| 100 | writel((u32)phys, pcie->dbi + PCIE_ATU_LOWER_BASE); |
| 101 | writel(phys >> 32, pcie->dbi + PCIE_ATU_UPPER_BASE); |
| 102 | writel(phys + size - 1, pcie->dbi + PCIE_ATU_LIMIT); |
| 103 | writel((u32)bus_addr, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 104 | writel(bus_addr >> 32, pcie->dbi + PCIE_ATU_UPPER_TARGET); |
| 105 | writel(type, pcie->dbi + PCIE_ATU_CR1); |
| 106 | writel(PCIE_ATU_ENABLE, pcie->dbi + PCIE_ATU_CR2); |
| 107 | } |
| 108 | |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 109 | /* Use bar match mode and MEM type as default */ |
| 110 | static void ls_pcie_iatu_inbound_set(struct ls_pcie *pcie, int idx, |
| 111 | int bar, u64 phys) |
| 112 | { |
| 113 | writel(PCIE_ATU_REGION_INBOUND | idx, pcie->dbi + PCIE_ATU_VIEWPORT); |
| 114 | writel((u32)phys, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 115 | writel(phys >> 32, pcie->dbi + PCIE_ATU_UPPER_TARGET); |
| 116 | writel(PCIE_ATU_TYPE_MEM, pcie->dbi + PCIE_ATU_CR1); |
| 117 | writel(PCIE_ATU_ENABLE | PCIE_ATU_BAR_MODE_ENABLE | |
| 118 | PCIE_ATU_BAR_NUM(bar), pcie->dbi + PCIE_ATU_CR2); |
| 119 | } |
| 120 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 121 | static void ls_pcie_setup_atu(struct ls_pcie *pcie, struct ls_pcie_info *info) |
| 122 | { |
| 123 | #ifdef DEBUG |
| 124 | int i; |
| 125 | #endif |
| 126 | |
| 127 | /* ATU 0 : OUTBOUND : CFG0 */ |
| 128 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0, |
| 129 | PCIE_ATU_TYPE_CFG0, |
| 130 | info->cfg0_phys, |
| 131 | 0, |
| 132 | info->cfg0_size); |
| 133 | /* ATU 1 : OUTBOUND : CFG1 */ |
| 134 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX1, |
| 135 | PCIE_ATU_TYPE_CFG1, |
| 136 | info->cfg1_phys, |
| 137 | 0, |
| 138 | info->cfg1_size); |
| 139 | /* ATU 2 : OUTBOUND : MEM */ |
| 140 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX2, |
| 141 | PCIE_ATU_TYPE_MEM, |
| 142 | info->mem_phys, |
| 143 | info->mem_bus, |
| 144 | info->mem_size); |
| 145 | /* ATU 3 : OUTBOUND : IO */ |
| 146 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX3, |
| 147 | PCIE_ATU_TYPE_IO, |
| 148 | info->io_phys, |
| 149 | info->io_bus, |
| 150 | info->io_size); |
| 151 | |
| 152 | #ifdef DEBUG |
| 153 | for (i = 0; i <= PCIE_ATU_REGION_INDEX3; i++) { |
| 154 | writel(PCIE_ATU_REGION_OUTBOUND | i, |
| 155 | pcie->dbi + PCIE_ATU_VIEWPORT); |
| 156 | debug("iATU%d:\n", i); |
| 157 | debug("\tLOWER PHYS 0x%08x\n", |
| 158 | readl(pcie->dbi + PCIE_ATU_LOWER_BASE)); |
| 159 | debug("\tUPPER PHYS 0x%08x\n", |
| 160 | readl(pcie->dbi + PCIE_ATU_UPPER_BASE)); |
| 161 | debug("\tLOWER BUS 0x%08x\n", |
| 162 | readl(pcie->dbi + PCIE_ATU_LOWER_TARGET)); |
| 163 | debug("\tUPPER BUS 0x%08x\n", |
| 164 | readl(pcie->dbi + PCIE_ATU_UPPER_TARGET)); |
| 165 | debug("\tLIMIT 0x%08x\n", |
| 166 | readl(pcie->dbi + PCIE_ATU_LIMIT)); |
| 167 | debug("\tCR1 0x%08x\n", |
| 168 | readl(pcie->dbi + PCIE_ATU_CR1)); |
| 169 | debug("\tCR2 0x%08x\n", |
| 170 | readl(pcie->dbi + PCIE_ATU_CR2)); |
| 171 | } |
| 172 | #endif |
| 173 | } |
| 174 | |
| 175 | int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev) |
| 176 | { |
| 177 | /* Do not skip controller */ |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | static int ls_pcie_addr_valid(struct pci_controller *hose, pci_dev_t d) |
| 182 | { |
| 183 | if (PCI_DEV(d) > 0) |
| 184 | return -EINVAL; |
| 185 | |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 186 | /* Controller does not support multi-function in RC mode */ |
| 187 | if ((PCI_BUS(d) == hose->first_busno) && (PCI_FUNC(d) > 0)) |
| 188 | return -EINVAL; |
| 189 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | static int ls_pcie_read_config(struct pci_controller *hose, pci_dev_t d, |
| 194 | int where, u32 *val) |
| 195 | { |
| 196 | struct ls_pcie *pcie = hose->priv_data; |
| 197 | u32 busdev, *addr; |
| 198 | |
| 199 | if (ls_pcie_addr_valid(hose, d)) { |
| 200 | *val = 0xffffffff; |
Bin Meng | 7ba34ff | 2016-01-08 01:03:21 -0800 | [diff] [blame] | 201 | return 0; |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | if (PCI_BUS(d) == hose->first_busno) { |
| 205 | addr = pcie->dbi + (where & ~0x3); |
| 206 | } else { |
| 207 | busdev = PCIE_ATU_BUS(PCI_BUS(d)) | |
| 208 | PCIE_ATU_DEV(PCI_DEV(d)) | |
| 209 | PCIE_ATU_FUNC(PCI_FUNC(d)); |
| 210 | |
| 211 | if (PCI_BUS(d) == hose->first_busno + 1) { |
| 212 | ls_pcie_cfg0_set_busdev(pcie, busdev); |
| 213 | addr = pcie->va_cfg0 + (where & ~0x3); |
| 214 | } else { |
| 215 | ls_pcie_cfg1_set_busdev(pcie, busdev); |
| 216 | addr = pcie->va_cfg1 + (where & ~0x3); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | *val = readl(addr); |
| 221 | |
| 222 | return 0; |
| 223 | } |
| 224 | |
| 225 | static int ls_pcie_write_config(struct pci_controller *hose, pci_dev_t d, |
| 226 | int where, u32 val) |
| 227 | { |
| 228 | struct ls_pcie *pcie = hose->priv_data; |
| 229 | u32 busdev, *addr; |
| 230 | |
| 231 | if (ls_pcie_addr_valid(hose, d)) |
| 232 | return -EINVAL; |
| 233 | |
| 234 | if (PCI_BUS(d) == hose->first_busno) { |
| 235 | addr = pcie->dbi + (where & ~0x3); |
| 236 | } else { |
| 237 | busdev = PCIE_ATU_BUS(PCI_BUS(d)) | |
| 238 | PCIE_ATU_DEV(PCI_DEV(d)) | |
| 239 | PCIE_ATU_FUNC(PCI_FUNC(d)); |
| 240 | |
| 241 | if (PCI_BUS(d) == hose->first_busno + 1) { |
| 242 | ls_pcie_cfg0_set_busdev(pcie, busdev); |
| 243 | addr = pcie->va_cfg0 + (where & ~0x3); |
| 244 | } else { |
| 245 | ls_pcie_cfg1_set_busdev(pcie, busdev); |
| 246 | addr = pcie->va_cfg1 + (where & ~0x3); |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | writel(val, addr); |
| 251 | |
| 252 | return 0; |
| 253 | } |
| 254 | |
| 255 | static void ls_pcie_setup_ctrl(struct ls_pcie *pcie, |
| 256 | struct ls_pcie_info *info) |
| 257 | { |
| 258 | struct pci_controller *hose = &pcie->hose; |
| 259 | pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0); |
| 260 | |
| 261 | ls_pcie_setup_atu(pcie, info); |
| 262 | |
| 263 | pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0); |
| 264 | |
| 265 | /* program correct class for RC */ |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 266 | writel(1, pcie->dbi + PCIE_DBI_RO_WR_EN); |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 267 | pci_hose_write_config_word(hose, dev, PCI_CLASS_DEVICE, |
| 268 | PCI_CLASS_BRIDGE_PCI); |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 269 | #ifndef CONFIG_LS102XA |
| 270 | writel(0, pcie->dbi + PCIE_DBI_RO_WR_EN); |
| 271 | #endif |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 272 | } |
| 273 | |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 274 | static void ls_pcie_ep_setup_atu(struct ls_pcie *pcie, |
| 275 | struct ls_pcie_info *info) |
| 276 | { |
| 277 | u64 phys = CONFIG_SYS_PCI_EP_MEMORY_BASE; |
| 278 | |
| 279 | /* ATU 0 : INBOUND : map BAR0 */ |
| 280 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX0, 0, phys); |
| 281 | /* ATU 1 : INBOUND : map BAR1 */ |
| 282 | phys += PCIE_BAR1_SIZE; |
| 283 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX1, 1, phys); |
| 284 | /* ATU 2 : INBOUND : map BAR2 */ |
| 285 | phys += PCIE_BAR2_SIZE; |
| 286 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX2, 2, phys); |
| 287 | /* ATU 3 : INBOUND : map BAR4 */ |
| 288 | phys = CONFIG_SYS_PCI_EP_MEMORY_BASE + PCIE_BAR4_SIZE; |
| 289 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX3, 4, phys); |
| 290 | |
| 291 | /* ATU 0 : OUTBOUND : map 4G MEM */ |
| 292 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0, |
| 293 | PCIE_ATU_TYPE_MEM, |
| 294 | info->phys_base, |
| 295 | 0, |
| 296 | 4 * 1024 * 1024 * 1024ULL); |
| 297 | } |
| 298 | |
| 299 | /* BAR0 and BAR1 are 32bit BAR2 and BAR4 are 64bit */ |
| 300 | static void ls_pcie_ep_setup_bar(void *bar_base, int bar, u32 size) |
| 301 | { |
| 302 | if (size < 4 * 1024) |
| 303 | return; |
| 304 | |
| 305 | switch (bar) { |
| 306 | case 0: |
| 307 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_0); |
| 308 | break; |
| 309 | case 1: |
| 310 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_1); |
| 311 | break; |
| 312 | case 2: |
| 313 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_2); |
| 314 | writel(0, bar_base + PCI_BASE_ADDRESS_3); |
| 315 | break; |
| 316 | case 4: |
| 317 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_4); |
| 318 | writel(0, bar_base + PCI_BASE_ADDRESS_5); |
| 319 | break; |
| 320 | default: |
| 321 | break; |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | static void ls_pcie_ep_setup_bars(void *bar_base) |
| 326 | { |
| 327 | /* BAR0 - 32bit - 4K configuration */ |
| 328 | ls_pcie_ep_setup_bar(bar_base, 0, PCIE_BAR0_SIZE); |
| 329 | /* BAR1 - 32bit - 8K MSIX*/ |
| 330 | ls_pcie_ep_setup_bar(bar_base, 1, PCIE_BAR1_SIZE); |
| 331 | /* BAR2 - 64bit - 4K MEM desciptor */ |
| 332 | ls_pcie_ep_setup_bar(bar_base, 2, PCIE_BAR2_SIZE); |
| 333 | /* BAR4 - 64bit - 1M MEM*/ |
| 334 | ls_pcie_ep_setup_bar(bar_base, 4, PCIE_BAR4_SIZE); |
| 335 | } |
| 336 | |
| 337 | static void ls_pcie_setup_ep(struct ls_pcie *pcie, struct ls_pcie_info *info) |
| 338 | { |
| 339 | struct pci_controller *hose = &pcie->hose; |
| 340 | pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0); |
| 341 | int sriov; |
| 342 | |
| 343 | sriov = pci_hose_find_ext_capability(hose, dev, PCI_EXT_CAP_ID_SRIOV); |
| 344 | if (sriov) { |
| 345 | int pf, vf; |
| 346 | |
| 347 | for (pf = 0; pf < PCIE_PF_NUM; pf++) { |
| 348 | for (vf = 0; vf <= PCIE_VF_NUM; vf++) { |
Mingkai Hu | af523a0 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 349 | #ifndef CONFIG_LS102XA |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 350 | writel(PCIE_LCTRL0_VAL(pf, vf), |
| 351 | pcie->dbi + PCIE_LUT_BASE + |
| 352 | PCIE_LUT_LCTRL0); |
Mingkai Hu | af523a0 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 353 | #endif |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 354 | ls_pcie_ep_setup_bars(pcie->dbi); |
| 355 | ls_pcie_ep_setup_atu(pcie, info); |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | /* Disable CFG2 */ |
Mingkai Hu | af523a0 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 360 | #ifndef CONFIG_LS102XA |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 361 | writel(0, pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_LCTRL0); |
Mingkai Hu | af523a0 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 362 | #endif |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 363 | } else { |
| 364 | ls_pcie_ep_setup_bars(pcie->dbi + PCIE_NO_SRIOV_BAR_BASE); |
| 365 | ls_pcie_ep_setup_atu(pcie, info); |
| 366 | } |
| 367 | } |
| 368 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 369 | int ls_pcie_init_ctrl(int busno, enum srds_prtcl dev, struct ls_pcie_info *info) |
| 370 | { |
| 371 | struct ls_pcie *pcie; |
| 372 | struct pci_controller *hose; |
| 373 | int num = dev - PCIE1; |
| 374 | pci_dev_t pdev = PCI_BDF(busno, 0, 0); |
| 375 | int i, linkup, ep_mode; |
| 376 | u8 header_type; |
| 377 | u16 temp16; |
| 378 | |
| 379 | if (!is_serdes_configured(dev)) { |
| 380 | printf("PCIe%d: disabled\n", num + 1); |
| 381 | return busno; |
| 382 | } |
| 383 | |
| 384 | pcie = malloc(sizeof(*pcie)); |
| 385 | if (!pcie) |
| 386 | return busno; |
| 387 | memset(pcie, 0, sizeof(*pcie)); |
| 388 | |
| 389 | hose = &pcie->hose; |
| 390 | hose->priv_data = pcie; |
| 391 | hose->first_busno = busno; |
| 392 | pcie->idx = num; |
| 393 | pcie->dbi = map_physmem(info->regs, PCIE_DBI_SIZE, MAP_NOCACHE); |
| 394 | pcie->va_cfg0 = map_physmem(info->cfg0_phys, |
| 395 | info->cfg0_size, |
| 396 | MAP_NOCACHE); |
| 397 | pcie->va_cfg1 = map_physmem(info->cfg1_phys, |
| 398 | info->cfg1_size, |
| 399 | MAP_NOCACHE); |
Stuart Yoder | 5e8e27b | 2016-03-10 10:52:30 -0600 | [diff] [blame] | 400 | pcie->next_lut_index = 0; |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 401 | |
| 402 | /* outbound memory */ |
| 403 | pci_set_region(&hose->regions[0], |
| 404 | (pci_size_t)info->mem_bus, |
| 405 | (phys_size_t)info->mem_phys, |
| 406 | (pci_size_t)info->mem_size, |
| 407 | PCI_REGION_MEM); |
| 408 | |
| 409 | /* outbound io */ |
| 410 | pci_set_region(&hose->regions[1], |
| 411 | (pci_size_t)info->io_bus, |
| 412 | (phys_size_t)info->io_phys, |
| 413 | (pci_size_t)info->io_size, |
| 414 | PCI_REGION_IO); |
| 415 | |
| 416 | /* System memory space */ |
| 417 | pci_set_region(&hose->regions[2], |
| 418 | CONFIG_SYS_PCI_MEMORY_BUS, |
| 419 | CONFIG_SYS_PCI_MEMORY_PHYS, |
| 420 | CONFIG_SYS_PCI_MEMORY_SIZE, |
| 421 | PCI_REGION_SYS_MEMORY); |
| 422 | |
| 423 | hose->region_count = 3; |
| 424 | |
| 425 | for (i = 0; i < hose->region_count; i++) |
| 426 | debug("PCI reg:%d %016llx:%016llx %016llx %08lx\n", |
| 427 | i, |
| 428 | (u64)hose->regions[i].phys_start, |
| 429 | (u64)hose->regions[i].bus_start, |
| 430 | (u64)hose->regions[i].size, |
| 431 | hose->regions[i].flags); |
| 432 | |
| 433 | pci_set_ops(hose, |
| 434 | pci_hose_read_config_byte_via_dword, |
| 435 | pci_hose_read_config_word_via_dword, |
| 436 | ls_pcie_read_config, |
| 437 | pci_hose_write_config_byte_via_dword, |
| 438 | pci_hose_write_config_word_via_dword, |
| 439 | ls_pcie_write_config); |
| 440 | |
| 441 | pci_hose_read_config_byte(hose, pdev, PCI_HEADER_TYPE, &header_type); |
| 442 | ep_mode = (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL; |
| 443 | printf("PCIe%u: %s ", info->pci_num, |
| 444 | ep_mode ? "Endpoint" : "Root Complex"); |
| 445 | |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 446 | if (ep_mode) |
| 447 | ls_pcie_setup_ep(pcie, info); |
| 448 | else |
| 449 | ls_pcie_setup_ctrl(pcie, info); |
| 450 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 451 | linkup = ls_pcie_link_up(pcie); |
| 452 | |
| 453 | if (!linkup) { |
| 454 | /* Let the user know there's no PCIe link */ |
| 455 | printf("no link, regs @ 0x%lx\n", info->regs); |
| 456 | hose->last_busno = hose->first_busno; |
| 457 | return busno; |
| 458 | } |
| 459 | |
| 460 | /* Print the negotiated PCIe link width */ |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 461 | pci_hose_read_config_word(hose, pdev, PCIE_LINK_STA, &temp16); |
| 462 | printf("x%d gen%d, regs @ 0x%lx\n", (temp16 & 0x3f0) >> 4, |
| 463 | (temp16 & 0xf), info->regs); |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 464 | |
| 465 | if (ep_mode) |
| 466 | return busno; |
| 467 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 468 | pci_register_hose(hose); |
| 469 | |
| 470 | hose->last_busno = pci_hose_scan(hose); |
| 471 | |
| 472 | printf("PCIe%x: Bus %02x - %02x\n", |
| 473 | info->pci_num, hose->first_busno, hose->last_busno); |
| 474 | |
| 475 | return hose->last_busno + 1; |
| 476 | } |
| 477 | |
| 478 | int ls_pcie_init_board(int busno) |
| 479 | { |
| 480 | struct ls_pcie_info info; |
| 481 | |
| 482 | #ifdef CONFIG_PCIE1 |
| 483 | SET_LS_PCIE_INFO(info, 1); |
| 484 | busno = ls_pcie_init_ctrl(busno, PCIE1, &info); |
| 485 | #endif |
| 486 | |
| 487 | #ifdef CONFIG_PCIE2 |
| 488 | SET_LS_PCIE_INFO(info, 2); |
| 489 | busno = ls_pcie_init_ctrl(busno, PCIE2, &info); |
| 490 | #endif |
| 491 | |
| 492 | #ifdef CONFIG_PCIE3 |
| 493 | SET_LS_PCIE_INFO(info, 3); |
| 494 | busno = ls_pcie_init_ctrl(busno, PCIE3, &info); |
| 495 | #endif |
| 496 | |
| 497 | #ifdef CONFIG_PCIE4 |
| 498 | SET_LS_PCIE_INFO(info, 4); |
| 499 | busno = ls_pcie_init_ctrl(busno, PCIE4, &info); |
| 500 | #endif |
| 501 | |
| 502 | return busno; |
| 503 | } |
| 504 | |
| 505 | void pci_init_board(void) |
| 506 | { |
| 507 | ls_pcie_init_board(0); |
| 508 | } |