Minghuan Lian | a4d6b61 | 2014-10-31 13:43:44 +0800 | [diff] [blame] | 1 | /* |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 2 | * Copyright 2014-2015 Freescale Semiconductor, Inc. |
Minghuan Lian | a4d6b61 | 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 | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 12 | #include <errno.h> |
| 13 | #include <malloc.h> |
Minghuan Lian | c106784 | 2016-12-13 14:54:17 +0800 | [diff] [blame^] | 14 | #include <dm.h> |
Mingkai Hu | 1921899 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 15 | #ifndef CONFIG_LS102XA |
Mingkai Hu | 0e58b51 | 2015-10-26 19:47:50 +0800 | [diff] [blame] | 16 | #include <asm/arch/fdt.h> |
Mingkai Hu | 1921899 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 17 | #include <asm/arch/soc.h> |
Hou Zhiqiang | 09716a7b | 2016-12-13 14:54:16 +0800 | [diff] [blame] | 18 | #else |
| 19 | #include <asm/arch/immap_ls102xa.h> |
Minghuan Lian | 5d7d24b | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 20 | #endif |
Hou Zhiqiang | 09716a7b | 2016-12-13 14:54:16 +0800 | [diff] [blame] | 21 | #include "pcie_layerscape.h" |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 22 | |
Minghuan Lian | c106784 | 2016-12-13 14:54:17 +0800 | [diff] [blame^] | 23 | DECLARE_GLOBAL_DATA_PTR; |
| 24 | |
| 25 | #ifndef CONFIG_DM_PCI |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 26 | #ifdef CONFIG_LS102XA |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 27 | /* PEX1/2 Misc Ports Status Register */ |
| 28 | #define LTSSM_STATE_SHIFT 20 |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 29 | |
| 30 | static int ls_pcie_link_state(struct ls_pcie *pcie) |
| 31 | { |
| 32 | u32 state; |
| 33 | struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR; |
| 34 | |
| 35 | state = in_be32(&scfg->pexmscportsr[pcie->idx]); |
| 36 | state = (state >> LTSSM_STATE_SHIFT) & LTSSM_STATE_MASK; |
| 37 | if (state < LTSSM_PCIE_L0) { |
| 38 | debug("....PCIe link error. LTSSM=0x%02x.\n", state); |
| 39 | return 0; |
| 40 | } |
| 41 | |
| 42 | return 1; |
| 43 | } |
| 44 | #else |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 45 | static int ls_pcie_link_state(struct ls_pcie *pcie) |
| 46 | { |
| 47 | u32 state; |
| 48 | |
Mingkai Hu | 1921899 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 49 | state = pex_lut_in32(pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_DBG) & |
Minghuan Lian | d225527 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 50 | LTSSM_STATE_MASK; |
| 51 | if (state < LTSSM_PCIE_L0) { |
| 52 | debug("....PCIe link error. LTSSM=0x%02x.\n", state); |
| 53 | return 0; |
| 54 | } |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 55 | |
Minghuan Lian | d225527 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 56 | return 1; |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 57 | } |
| 58 | #endif |
| 59 | |
| 60 | static int ls_pcie_link_up(struct ls_pcie *pcie) |
| 61 | { |
| 62 | int state; |
| 63 | u32 cap; |
| 64 | |
| 65 | state = ls_pcie_link_state(pcie); |
| 66 | if (state) |
| 67 | return state; |
| 68 | |
| 69 | /* Try to download speed to gen1 */ |
| 70 | cap = readl(pcie->dbi + PCIE_LINK_CAP); |
| 71 | writel((cap & (~PCIE_LINK_SPEED_MASK)) | 1, pcie->dbi + PCIE_LINK_CAP); |
Minghuan Lian | d225527 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 72 | /* |
| 73 | * Notice: the following delay has critical impact on link training |
| 74 | * if too short (<30ms) the link doesn't get up. |
| 75 | */ |
| 76 | mdelay(100); |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 77 | state = ls_pcie_link_state(pcie); |
| 78 | if (state) |
| 79 | return state; |
| 80 | |
| 81 | writel(cap, pcie->dbi + PCIE_LINK_CAP); |
| 82 | |
| 83 | return 0; |
| 84 | } |
| 85 | |
| 86 | static void ls_pcie_cfg0_set_busdev(struct ls_pcie *pcie, u32 busdev) |
| 87 | { |
| 88 | writel(PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX0, |
| 89 | pcie->dbi + PCIE_ATU_VIEWPORT); |
| 90 | writel(busdev, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 91 | } |
| 92 | |
| 93 | static void ls_pcie_cfg1_set_busdev(struct ls_pcie *pcie, u32 busdev) |
| 94 | { |
| 95 | writel(PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX1, |
| 96 | pcie->dbi + PCIE_ATU_VIEWPORT); |
| 97 | writel(busdev, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 98 | } |
| 99 | |
| 100 | static void ls_pcie_iatu_outbound_set(struct ls_pcie *pcie, int idx, int type, |
| 101 | u64 phys, u64 bus_addr, pci_size_t size) |
| 102 | { |
| 103 | writel(PCIE_ATU_REGION_OUTBOUND | idx, pcie->dbi + PCIE_ATU_VIEWPORT); |
| 104 | writel((u32)phys, pcie->dbi + PCIE_ATU_LOWER_BASE); |
| 105 | writel(phys >> 32, pcie->dbi + PCIE_ATU_UPPER_BASE); |
| 106 | writel(phys + size - 1, pcie->dbi + PCIE_ATU_LIMIT); |
| 107 | writel((u32)bus_addr, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 108 | writel(bus_addr >> 32, pcie->dbi + PCIE_ATU_UPPER_TARGET); |
| 109 | writel(type, pcie->dbi + PCIE_ATU_CR1); |
| 110 | writel(PCIE_ATU_ENABLE, pcie->dbi + PCIE_ATU_CR2); |
| 111 | } |
| 112 | |
Minghuan Lian | 5d7d24b | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 113 | /* Use bar match mode and MEM type as default */ |
| 114 | static void ls_pcie_iatu_inbound_set(struct ls_pcie *pcie, int idx, |
| 115 | int bar, u64 phys) |
| 116 | { |
| 117 | writel(PCIE_ATU_REGION_INBOUND | idx, pcie->dbi + PCIE_ATU_VIEWPORT); |
| 118 | writel((u32)phys, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 119 | writel(phys >> 32, pcie->dbi + PCIE_ATU_UPPER_TARGET); |
| 120 | writel(PCIE_ATU_TYPE_MEM, pcie->dbi + PCIE_ATU_CR1); |
| 121 | writel(PCIE_ATU_ENABLE | PCIE_ATU_BAR_MODE_ENABLE | |
| 122 | PCIE_ATU_BAR_NUM(bar), pcie->dbi + PCIE_ATU_CR2); |
| 123 | } |
| 124 | |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 125 | static void ls_pcie_setup_atu(struct ls_pcie *pcie, struct ls_pcie_info *info) |
| 126 | { |
| 127 | #ifdef DEBUG |
| 128 | int i; |
| 129 | #endif |
| 130 | |
| 131 | /* ATU 0 : OUTBOUND : CFG0 */ |
| 132 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0, |
| 133 | PCIE_ATU_TYPE_CFG0, |
| 134 | info->cfg0_phys, |
| 135 | 0, |
| 136 | info->cfg0_size); |
| 137 | /* ATU 1 : OUTBOUND : CFG1 */ |
| 138 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX1, |
| 139 | PCIE_ATU_TYPE_CFG1, |
| 140 | info->cfg1_phys, |
| 141 | 0, |
| 142 | info->cfg1_size); |
| 143 | /* ATU 2 : OUTBOUND : MEM */ |
| 144 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX2, |
| 145 | PCIE_ATU_TYPE_MEM, |
| 146 | info->mem_phys, |
| 147 | info->mem_bus, |
| 148 | info->mem_size); |
| 149 | /* ATU 3 : OUTBOUND : IO */ |
| 150 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX3, |
| 151 | PCIE_ATU_TYPE_IO, |
| 152 | info->io_phys, |
| 153 | info->io_bus, |
| 154 | info->io_size); |
| 155 | |
| 156 | #ifdef DEBUG |
| 157 | for (i = 0; i <= PCIE_ATU_REGION_INDEX3; i++) { |
| 158 | writel(PCIE_ATU_REGION_OUTBOUND | i, |
| 159 | pcie->dbi + PCIE_ATU_VIEWPORT); |
| 160 | debug("iATU%d:\n", i); |
| 161 | debug("\tLOWER PHYS 0x%08x\n", |
| 162 | readl(pcie->dbi + PCIE_ATU_LOWER_BASE)); |
| 163 | debug("\tUPPER PHYS 0x%08x\n", |
| 164 | readl(pcie->dbi + PCIE_ATU_UPPER_BASE)); |
| 165 | debug("\tLOWER BUS 0x%08x\n", |
| 166 | readl(pcie->dbi + PCIE_ATU_LOWER_TARGET)); |
| 167 | debug("\tUPPER BUS 0x%08x\n", |
| 168 | readl(pcie->dbi + PCIE_ATU_UPPER_TARGET)); |
| 169 | debug("\tLIMIT 0x%08x\n", |
| 170 | readl(pcie->dbi + PCIE_ATU_LIMIT)); |
| 171 | debug("\tCR1 0x%08x\n", |
| 172 | readl(pcie->dbi + PCIE_ATU_CR1)); |
| 173 | debug("\tCR2 0x%08x\n", |
| 174 | readl(pcie->dbi + PCIE_ATU_CR2)); |
| 175 | } |
| 176 | #endif |
| 177 | } |
| 178 | |
| 179 | int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev) |
| 180 | { |
| 181 | /* Do not skip controller */ |
| 182 | return 0; |
| 183 | } |
| 184 | |
| 185 | static int ls_pcie_addr_valid(struct pci_controller *hose, pci_dev_t d) |
| 186 | { |
| 187 | if (PCI_DEV(d) > 0) |
| 188 | return -EINVAL; |
| 189 | |
Minghuan Lian | d225527 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 190 | /* Controller does not support multi-function in RC mode */ |
| 191 | if ((PCI_BUS(d) == hose->first_busno) && (PCI_FUNC(d) > 0)) |
| 192 | return -EINVAL; |
| 193 | |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | static int ls_pcie_read_config(struct pci_controller *hose, pci_dev_t d, |
| 198 | int where, u32 *val) |
| 199 | { |
| 200 | struct ls_pcie *pcie = hose->priv_data; |
| 201 | u32 busdev, *addr; |
| 202 | |
| 203 | if (ls_pcie_addr_valid(hose, d)) { |
| 204 | *val = 0xffffffff; |
Bin Meng | 51170a4 | 2016-01-08 01:03:21 -0800 | [diff] [blame] | 205 | return 0; |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | if (PCI_BUS(d) == hose->first_busno) { |
| 209 | addr = pcie->dbi + (where & ~0x3); |
| 210 | } else { |
| 211 | busdev = PCIE_ATU_BUS(PCI_BUS(d)) | |
| 212 | PCIE_ATU_DEV(PCI_DEV(d)) | |
| 213 | PCIE_ATU_FUNC(PCI_FUNC(d)); |
| 214 | |
| 215 | if (PCI_BUS(d) == hose->first_busno + 1) { |
| 216 | ls_pcie_cfg0_set_busdev(pcie, busdev); |
| 217 | addr = pcie->va_cfg0 + (where & ~0x3); |
| 218 | } else { |
| 219 | ls_pcie_cfg1_set_busdev(pcie, busdev); |
| 220 | addr = pcie->va_cfg1 + (where & ~0x3); |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | *val = readl(addr); |
| 225 | |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | static int ls_pcie_write_config(struct pci_controller *hose, pci_dev_t d, |
| 230 | int where, u32 val) |
| 231 | { |
| 232 | struct ls_pcie *pcie = hose->priv_data; |
| 233 | u32 busdev, *addr; |
| 234 | |
| 235 | if (ls_pcie_addr_valid(hose, d)) |
| 236 | return -EINVAL; |
| 237 | |
| 238 | if (PCI_BUS(d) == hose->first_busno) { |
| 239 | addr = pcie->dbi + (where & ~0x3); |
| 240 | } else { |
| 241 | busdev = PCIE_ATU_BUS(PCI_BUS(d)) | |
| 242 | PCIE_ATU_DEV(PCI_DEV(d)) | |
| 243 | PCIE_ATU_FUNC(PCI_FUNC(d)); |
| 244 | |
| 245 | if (PCI_BUS(d) == hose->first_busno + 1) { |
| 246 | ls_pcie_cfg0_set_busdev(pcie, busdev); |
| 247 | addr = pcie->va_cfg0 + (where & ~0x3); |
| 248 | } else { |
| 249 | ls_pcie_cfg1_set_busdev(pcie, busdev); |
| 250 | addr = pcie->va_cfg1 + (where & ~0x3); |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | writel(val, addr); |
| 255 | |
| 256 | return 0; |
| 257 | } |
| 258 | |
| 259 | static void ls_pcie_setup_ctrl(struct ls_pcie *pcie, |
| 260 | struct ls_pcie_info *info) |
| 261 | { |
| 262 | struct pci_controller *hose = &pcie->hose; |
| 263 | pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0); |
| 264 | |
| 265 | ls_pcie_setup_atu(pcie, info); |
| 266 | |
| 267 | pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0); |
| 268 | |
| 269 | /* program correct class for RC */ |
Minghuan Lian | d225527 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 270 | writel(1, pcie->dbi + PCIE_DBI_RO_WR_EN); |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 271 | pci_hose_write_config_word(hose, dev, PCI_CLASS_DEVICE, |
| 272 | PCI_CLASS_BRIDGE_PCI); |
Minghuan Lian | d225527 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 273 | #ifndef CONFIG_LS102XA |
| 274 | writel(0, pcie->dbi + PCIE_DBI_RO_WR_EN); |
| 275 | #endif |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 276 | } |
| 277 | |
Minghuan Lian | 5d7d24b | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 278 | static void ls_pcie_ep_setup_atu(struct ls_pcie *pcie, |
| 279 | struct ls_pcie_info *info) |
| 280 | { |
| 281 | u64 phys = CONFIG_SYS_PCI_EP_MEMORY_BASE; |
| 282 | |
| 283 | /* ATU 0 : INBOUND : map BAR0 */ |
| 284 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX0, 0, phys); |
| 285 | /* ATU 1 : INBOUND : map BAR1 */ |
| 286 | phys += PCIE_BAR1_SIZE; |
| 287 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX1, 1, phys); |
| 288 | /* ATU 2 : INBOUND : map BAR2 */ |
| 289 | phys += PCIE_BAR2_SIZE; |
| 290 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX2, 2, phys); |
| 291 | /* ATU 3 : INBOUND : map BAR4 */ |
| 292 | phys = CONFIG_SYS_PCI_EP_MEMORY_BASE + PCIE_BAR4_SIZE; |
| 293 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX3, 4, phys); |
| 294 | |
| 295 | /* ATU 0 : OUTBOUND : map 4G MEM */ |
| 296 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0, |
| 297 | PCIE_ATU_TYPE_MEM, |
| 298 | info->phys_base, |
| 299 | 0, |
| 300 | 4 * 1024 * 1024 * 1024ULL); |
| 301 | } |
| 302 | |
| 303 | /* BAR0 and BAR1 are 32bit BAR2 and BAR4 are 64bit */ |
| 304 | static void ls_pcie_ep_setup_bar(void *bar_base, int bar, u32 size) |
| 305 | { |
| 306 | if (size < 4 * 1024) |
| 307 | return; |
| 308 | |
| 309 | switch (bar) { |
| 310 | case 0: |
| 311 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_0); |
| 312 | break; |
| 313 | case 1: |
| 314 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_1); |
| 315 | break; |
| 316 | case 2: |
| 317 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_2); |
| 318 | writel(0, bar_base + PCI_BASE_ADDRESS_3); |
| 319 | break; |
| 320 | case 4: |
| 321 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_4); |
| 322 | writel(0, bar_base + PCI_BASE_ADDRESS_5); |
| 323 | break; |
| 324 | default: |
| 325 | break; |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | static void ls_pcie_ep_setup_bars(void *bar_base) |
| 330 | { |
| 331 | /* BAR0 - 32bit - 4K configuration */ |
| 332 | ls_pcie_ep_setup_bar(bar_base, 0, PCIE_BAR0_SIZE); |
| 333 | /* BAR1 - 32bit - 8K MSIX*/ |
| 334 | ls_pcie_ep_setup_bar(bar_base, 1, PCIE_BAR1_SIZE); |
| 335 | /* BAR2 - 64bit - 4K MEM desciptor */ |
| 336 | ls_pcie_ep_setup_bar(bar_base, 2, PCIE_BAR2_SIZE); |
| 337 | /* BAR4 - 64bit - 1M MEM*/ |
| 338 | ls_pcie_ep_setup_bar(bar_base, 4, PCIE_BAR4_SIZE); |
| 339 | } |
| 340 | |
| 341 | static void ls_pcie_setup_ep(struct ls_pcie *pcie, struct ls_pcie_info *info) |
| 342 | { |
| 343 | struct pci_controller *hose = &pcie->hose; |
| 344 | pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0); |
| 345 | int sriov; |
| 346 | |
| 347 | sriov = pci_hose_find_ext_capability(hose, dev, PCI_EXT_CAP_ID_SRIOV); |
| 348 | if (sriov) { |
| 349 | int pf, vf; |
| 350 | |
| 351 | for (pf = 0; pf < PCIE_PF_NUM; pf++) { |
| 352 | for (vf = 0; vf <= PCIE_VF_NUM; vf++) { |
Mingkai Hu | 1921899 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 353 | #ifndef CONFIG_LS102XA |
Minghuan Lian | 5d7d24b | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 354 | writel(PCIE_LCTRL0_VAL(pf, vf), |
| 355 | pcie->dbi + PCIE_LUT_BASE + |
| 356 | PCIE_LUT_LCTRL0); |
Mingkai Hu | 1921899 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 357 | #endif |
Minghuan Lian | 5d7d24b | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 358 | ls_pcie_ep_setup_bars(pcie->dbi); |
| 359 | ls_pcie_ep_setup_atu(pcie, info); |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | /* Disable CFG2 */ |
Mingkai Hu | 1921899 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 364 | #ifndef CONFIG_LS102XA |
Minghuan Lian | 5d7d24b | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 365 | writel(0, pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_LCTRL0); |
Mingkai Hu | 1921899 | 2015-11-11 17:58:34 +0800 | [diff] [blame] | 366 | #endif |
Minghuan Lian | 5d7d24b | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 367 | } else { |
| 368 | ls_pcie_ep_setup_bars(pcie->dbi + PCIE_NO_SRIOV_BAR_BASE); |
| 369 | ls_pcie_ep_setup_atu(pcie, info); |
| 370 | } |
Stuart Yoder | 45e78ac | 2016-03-10 10:52:30 -0600 | [diff] [blame] | 371 | } |
| 372 | |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 373 | int ls_pcie_init_ctrl(int busno, enum srds_prtcl dev, struct ls_pcie_info *info) |
| 374 | { |
| 375 | struct ls_pcie *pcie; |
| 376 | struct pci_controller *hose; |
| 377 | int num = dev - PCIE1; |
| 378 | pci_dev_t pdev = PCI_BDF(busno, 0, 0); |
| 379 | int i, linkup, ep_mode; |
| 380 | u8 header_type; |
| 381 | u16 temp16; |
| 382 | |
| 383 | if (!is_serdes_configured(dev)) { |
| 384 | printf("PCIe%d: disabled\n", num + 1); |
| 385 | return busno; |
| 386 | } |
| 387 | |
| 388 | pcie = malloc(sizeof(*pcie)); |
| 389 | if (!pcie) |
| 390 | return busno; |
| 391 | memset(pcie, 0, sizeof(*pcie)); |
| 392 | |
| 393 | hose = &pcie->hose; |
| 394 | hose->priv_data = pcie; |
| 395 | hose->first_busno = busno; |
| 396 | pcie->idx = num; |
| 397 | pcie->dbi = map_physmem(info->regs, PCIE_DBI_SIZE, MAP_NOCACHE); |
| 398 | pcie->va_cfg0 = map_physmem(info->cfg0_phys, |
| 399 | info->cfg0_size, |
| 400 | MAP_NOCACHE); |
| 401 | pcie->va_cfg1 = map_physmem(info->cfg1_phys, |
| 402 | info->cfg1_size, |
| 403 | MAP_NOCACHE); |
Stuart Yoder | 45e78ac | 2016-03-10 10:52:30 -0600 | [diff] [blame] | 404 | pcie->next_lut_index = 0; |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 405 | |
| 406 | /* outbound memory */ |
| 407 | pci_set_region(&hose->regions[0], |
| 408 | (pci_size_t)info->mem_bus, |
| 409 | (phys_size_t)info->mem_phys, |
| 410 | (pci_size_t)info->mem_size, |
| 411 | PCI_REGION_MEM); |
| 412 | |
| 413 | /* outbound io */ |
| 414 | pci_set_region(&hose->regions[1], |
| 415 | (pci_size_t)info->io_bus, |
| 416 | (phys_size_t)info->io_phys, |
| 417 | (pci_size_t)info->io_size, |
| 418 | PCI_REGION_IO); |
| 419 | |
| 420 | /* System memory space */ |
| 421 | pci_set_region(&hose->regions[2], |
| 422 | CONFIG_SYS_PCI_MEMORY_BUS, |
| 423 | CONFIG_SYS_PCI_MEMORY_PHYS, |
| 424 | CONFIG_SYS_PCI_MEMORY_SIZE, |
| 425 | PCI_REGION_SYS_MEMORY); |
| 426 | |
| 427 | hose->region_count = 3; |
| 428 | |
| 429 | for (i = 0; i < hose->region_count; i++) |
| 430 | debug("PCI reg:%d %016llx:%016llx %016llx %08lx\n", |
| 431 | i, |
| 432 | (u64)hose->regions[i].phys_start, |
| 433 | (u64)hose->regions[i].bus_start, |
| 434 | (u64)hose->regions[i].size, |
| 435 | hose->regions[i].flags); |
| 436 | |
| 437 | pci_set_ops(hose, |
| 438 | pci_hose_read_config_byte_via_dword, |
| 439 | pci_hose_read_config_word_via_dword, |
| 440 | ls_pcie_read_config, |
| 441 | pci_hose_write_config_byte_via_dword, |
| 442 | pci_hose_write_config_word_via_dword, |
| 443 | ls_pcie_write_config); |
| 444 | |
| 445 | pci_hose_read_config_byte(hose, pdev, PCI_HEADER_TYPE, &header_type); |
| 446 | ep_mode = (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL; |
| 447 | printf("PCIe%u: %s ", info->pci_num, |
| 448 | ep_mode ? "Endpoint" : "Root Complex"); |
| 449 | |
Minghuan Lian | 5d7d24b | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 450 | if (ep_mode) |
| 451 | ls_pcie_setup_ep(pcie, info); |
| 452 | else |
| 453 | ls_pcie_setup_ctrl(pcie, info); |
| 454 | |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 455 | linkup = ls_pcie_link_up(pcie); |
| 456 | |
| 457 | if (!linkup) { |
| 458 | /* Let the user know there's no PCIe link */ |
| 459 | printf("no link, regs @ 0x%lx\n", info->regs); |
| 460 | hose->last_busno = hose->first_busno; |
| 461 | return busno; |
| 462 | } |
| 463 | |
| 464 | /* Print the negotiated PCIe link width */ |
Minghuan Lian | d225527 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 465 | pci_hose_read_config_word(hose, pdev, PCIE_LINK_STA, &temp16); |
| 466 | printf("x%d gen%d, regs @ 0x%lx\n", (temp16 & 0x3f0) >> 4, |
| 467 | (temp16 & 0xf), info->regs); |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 468 | |
| 469 | if (ep_mode) |
| 470 | return busno; |
| 471 | |
Minghuan Lian | fdab545 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 472 | pci_register_hose(hose); |
| 473 | |
| 474 | hose->last_busno = pci_hose_scan(hose); |
| 475 | |
| 476 | printf("PCIe%x: Bus %02x - %02x\n", |
| 477 | info->pci_num, hose->first_busno, hose->last_busno); |
| 478 | |
| 479 | return hose->last_busno + 1; |
| 480 | } |
| 481 | |
| 482 | int ls_pcie_init_board(int busno) |
| 483 | { |
| 484 | struct ls_pcie_info info; |
| 485 | |
| 486 | #ifdef CONFIG_PCIE1 |
| 487 | SET_LS_PCIE_INFO(info, 1); |
| 488 | busno = ls_pcie_init_ctrl(busno, PCIE1, &info); |
| 489 | #endif |
| 490 | |
| 491 | #ifdef CONFIG_PCIE2 |
| 492 | SET_LS_PCIE_INFO(info, 2); |
| 493 | busno = ls_pcie_init_ctrl(busno, PCIE2, &info); |
| 494 | #endif |
| 495 | |
| 496 | #ifdef CONFIG_PCIE3 |
| 497 | SET_LS_PCIE_INFO(info, 3); |
| 498 | busno = ls_pcie_init_ctrl(busno, PCIE3, &info); |
| 499 | #endif |
| 500 | |
| 501 | #ifdef CONFIG_PCIE4 |
| 502 | SET_LS_PCIE_INFO(info, 4); |
| 503 | busno = ls_pcie_init_ctrl(busno, PCIE4, &info); |
| 504 | #endif |
| 505 | |
| 506 | return busno; |
| 507 | } |
| 508 | |
| 509 | void pci_init_board(void) |
| 510 | { |
| 511 | ls_pcie_init_board(0); |
| 512 | } |
Minghuan Lian | c106784 | 2016-12-13 14:54:17 +0800 | [diff] [blame^] | 513 | |
| 514 | #else |
| 515 | LIST_HEAD(ls_pcie_list); |
| 516 | |
| 517 | static unsigned int dbi_readl(struct ls_pcie *pcie, unsigned int offset) |
| 518 | { |
| 519 | return in_le32(pcie->dbi + offset); |
| 520 | } |
| 521 | |
| 522 | static void dbi_writel(struct ls_pcie *pcie, unsigned int value, |
| 523 | unsigned int offset) |
| 524 | { |
| 525 | out_le32(pcie->dbi + offset, value); |
| 526 | } |
| 527 | |
| 528 | static unsigned int ctrl_readl(struct ls_pcie *pcie, unsigned int offset) |
| 529 | { |
| 530 | if (pcie->big_endian) |
| 531 | return in_be32(pcie->ctrl + offset); |
| 532 | else |
| 533 | return in_le32(pcie->ctrl + offset); |
| 534 | } |
| 535 | |
| 536 | static void ctrl_writel(struct ls_pcie *pcie, unsigned int value, |
| 537 | unsigned int offset) |
| 538 | { |
| 539 | if (pcie->big_endian) |
| 540 | out_be32(pcie->ctrl + offset, value); |
| 541 | else |
| 542 | out_le32(pcie->ctrl + offset, value); |
| 543 | } |
| 544 | |
| 545 | static int ls_pcie_ltssm(struct ls_pcie *pcie) |
| 546 | { |
| 547 | u32 state; |
| 548 | uint svr; |
| 549 | |
| 550 | svr = get_svr(); |
| 551 | if (((svr >> SVR_VAR_PER_SHIFT) & SVR_LS102XA_MASK) == SVR_LS102XA) { |
| 552 | state = ctrl_readl(pcie, LS1021_PEXMSCPORTSR(pcie->idx)); |
| 553 | state = (state >> LS1021_LTSSM_STATE_SHIFT) & LTSSM_STATE_MASK; |
| 554 | } else { |
| 555 | state = ctrl_readl(pcie, PCIE_PF_DBG) & LTSSM_STATE_MASK; |
| 556 | } |
| 557 | |
| 558 | return state; |
| 559 | } |
| 560 | |
| 561 | static int ls_pcie_link_up(struct ls_pcie *pcie) |
| 562 | { |
| 563 | int ltssm; |
| 564 | |
| 565 | ltssm = ls_pcie_ltssm(pcie); |
| 566 | if (ltssm < LTSSM_PCIE_L0) |
| 567 | return 0; |
| 568 | |
| 569 | return 1; |
| 570 | } |
| 571 | |
| 572 | static void ls_pcie_cfg0_set_busdev(struct ls_pcie *pcie, u32 busdev) |
| 573 | { |
| 574 | dbi_writel(pcie, PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX0, |
| 575 | PCIE_ATU_VIEWPORT); |
| 576 | dbi_writel(pcie, busdev, PCIE_ATU_LOWER_TARGET); |
| 577 | } |
| 578 | |
| 579 | static void ls_pcie_cfg1_set_busdev(struct ls_pcie *pcie, u32 busdev) |
| 580 | { |
| 581 | dbi_writel(pcie, PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX1, |
| 582 | PCIE_ATU_VIEWPORT); |
| 583 | dbi_writel(pcie, busdev, PCIE_ATU_LOWER_TARGET); |
| 584 | } |
| 585 | |
| 586 | static void ls_pcie_atu_outbound_set(struct ls_pcie *pcie, int idx, int type, |
| 587 | u64 phys, u64 bus_addr, pci_size_t size) |
| 588 | { |
| 589 | dbi_writel(pcie, PCIE_ATU_REGION_OUTBOUND | idx, PCIE_ATU_VIEWPORT); |
| 590 | dbi_writel(pcie, (u32)phys, PCIE_ATU_LOWER_BASE); |
| 591 | dbi_writel(pcie, phys >> 32, PCIE_ATU_UPPER_BASE); |
| 592 | dbi_writel(pcie, (u32)phys + size - 1, PCIE_ATU_LIMIT); |
| 593 | dbi_writel(pcie, (u32)bus_addr, PCIE_ATU_LOWER_TARGET); |
| 594 | dbi_writel(pcie, bus_addr >> 32, PCIE_ATU_UPPER_TARGET); |
| 595 | dbi_writel(pcie, type, PCIE_ATU_CR1); |
| 596 | dbi_writel(pcie, PCIE_ATU_ENABLE, PCIE_ATU_CR2); |
| 597 | } |
| 598 | |
| 599 | /* Use bar match mode and MEM type as default */ |
| 600 | static void ls_pcie_atu_inbound_set(struct ls_pcie *pcie, int idx, |
| 601 | int bar, u64 phys) |
| 602 | { |
| 603 | dbi_writel(pcie, PCIE_ATU_REGION_INBOUND | idx, PCIE_ATU_VIEWPORT); |
| 604 | dbi_writel(pcie, (u32)phys, PCIE_ATU_LOWER_TARGET); |
| 605 | dbi_writel(pcie, phys >> 32, PCIE_ATU_UPPER_TARGET); |
| 606 | dbi_writel(pcie, PCIE_ATU_TYPE_MEM, PCIE_ATU_CR1); |
| 607 | dbi_writel(pcie, PCIE_ATU_ENABLE | PCIE_ATU_BAR_MODE_ENABLE | |
| 608 | PCIE_ATU_BAR_NUM(bar), PCIE_ATU_CR2); |
| 609 | } |
| 610 | |
| 611 | static void ls_pcie_dump_atu(struct ls_pcie *pcie) |
| 612 | { |
| 613 | int i; |
| 614 | |
| 615 | for (i = 0; i < PCIE_ATU_REGION_NUM; i++) { |
| 616 | dbi_writel(pcie, PCIE_ATU_REGION_OUTBOUND | i, |
| 617 | PCIE_ATU_VIEWPORT); |
| 618 | debug("iATU%d:\n", i); |
| 619 | debug("\tLOWER PHYS 0x%08x\n", |
| 620 | dbi_readl(pcie, PCIE_ATU_LOWER_BASE)); |
| 621 | debug("\tUPPER PHYS 0x%08x\n", |
| 622 | dbi_readl(pcie, PCIE_ATU_UPPER_BASE)); |
| 623 | debug("\tLOWER BUS 0x%08x\n", |
| 624 | dbi_readl(pcie, PCIE_ATU_LOWER_TARGET)); |
| 625 | debug("\tUPPER BUS 0x%08x\n", |
| 626 | dbi_readl(pcie, PCIE_ATU_UPPER_TARGET)); |
| 627 | debug("\tLIMIT 0x%08x\n", |
| 628 | readl(pcie->dbi + PCIE_ATU_LIMIT)); |
| 629 | debug("\tCR1 0x%08x\n", |
| 630 | dbi_readl(pcie, PCIE_ATU_CR1)); |
| 631 | debug("\tCR2 0x%08x\n", |
| 632 | dbi_readl(pcie, PCIE_ATU_CR2)); |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | static void ls_pcie_setup_atu(struct ls_pcie *pcie) |
| 637 | { |
| 638 | struct pci_region *io, *mem, *pref; |
| 639 | unsigned long long offset = 0; |
| 640 | int idx = 0; |
| 641 | uint svr; |
| 642 | |
| 643 | svr = get_svr(); |
| 644 | if (((svr >> SVR_VAR_PER_SHIFT) & SVR_LS102XA_MASK) == SVR_LS102XA) { |
| 645 | offset = LS1021_PCIE_SPACE_OFFSET + |
| 646 | LS1021_PCIE_SPACE_SIZE * pcie->idx; |
| 647 | } |
| 648 | |
| 649 | /* ATU 0 : OUTBOUND : CFG0 */ |
| 650 | ls_pcie_atu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0, |
| 651 | PCIE_ATU_TYPE_CFG0, |
| 652 | pcie->cfg_res.start + offset, |
| 653 | 0, |
| 654 | fdt_resource_size(&pcie->cfg_res) / 2); |
| 655 | /* ATU 1 : OUTBOUND : CFG1 */ |
| 656 | ls_pcie_atu_outbound_set(pcie, PCIE_ATU_REGION_INDEX1, |
| 657 | PCIE_ATU_TYPE_CFG1, |
| 658 | pcie->cfg_res.start + offset + |
| 659 | fdt_resource_size(&pcie->cfg_res) / 2, |
| 660 | 0, |
| 661 | fdt_resource_size(&pcie->cfg_res) / 2); |
| 662 | |
| 663 | pci_get_regions(pcie->bus, &io, &mem, &pref); |
| 664 | idx = PCIE_ATU_REGION_INDEX1 + 1; |
| 665 | |
| 666 | if (io) |
| 667 | /* ATU : OUTBOUND : IO */ |
| 668 | ls_pcie_atu_outbound_set(pcie, idx++, |
| 669 | PCIE_ATU_TYPE_IO, |
| 670 | io->phys_start + offset, |
| 671 | io->bus_start, |
| 672 | io->size); |
| 673 | |
| 674 | if (mem) |
| 675 | /* ATU : OUTBOUND : MEM */ |
| 676 | ls_pcie_atu_outbound_set(pcie, idx++, |
| 677 | PCIE_ATU_TYPE_MEM, |
| 678 | mem->phys_start + offset, |
| 679 | mem->bus_start, |
| 680 | mem->size); |
| 681 | |
| 682 | if (pref) |
| 683 | /* ATU : OUTBOUND : pref */ |
| 684 | ls_pcie_atu_outbound_set(pcie, idx++, |
| 685 | PCIE_ATU_TYPE_MEM, |
| 686 | pref->phys_start + offset, |
| 687 | pref->bus_start, |
| 688 | pref->size); |
| 689 | |
| 690 | ls_pcie_dump_atu(pcie); |
| 691 | } |
| 692 | |
| 693 | /* Return 0 if the address is valid, -errno if not valid */ |
| 694 | static int ls_pcie_addr_valid(struct ls_pcie *pcie, pci_dev_t bdf) |
| 695 | { |
| 696 | struct udevice *bus = pcie->bus; |
| 697 | |
| 698 | if (!pcie->enabled) |
| 699 | return -ENXIO; |
| 700 | |
| 701 | if (PCI_BUS(bdf) < bus->seq) |
| 702 | return -EINVAL; |
| 703 | |
| 704 | if ((PCI_BUS(bdf) > bus->seq) && (!ls_pcie_link_up(pcie))) |
| 705 | return -EINVAL; |
| 706 | |
| 707 | if (PCI_BUS(bdf) <= (bus->seq + 1) && (PCI_DEV(bdf) > 0)) |
| 708 | return -EINVAL; |
| 709 | |
| 710 | return 0; |
| 711 | } |
| 712 | |
| 713 | void *ls_pcie_conf_address(struct ls_pcie *pcie, pci_dev_t bdf, |
| 714 | int offset) |
| 715 | { |
| 716 | struct udevice *bus = pcie->bus; |
| 717 | u32 busdev; |
| 718 | |
| 719 | if (PCI_BUS(bdf) == bus->seq) |
| 720 | return pcie->dbi + offset; |
| 721 | |
| 722 | busdev = PCIE_ATU_BUS(PCI_BUS(bdf)) | |
| 723 | PCIE_ATU_DEV(PCI_DEV(bdf)) | |
| 724 | PCIE_ATU_FUNC(PCI_FUNC(bdf)); |
| 725 | |
| 726 | if (PCI_BUS(bdf) == bus->seq + 1) { |
| 727 | ls_pcie_cfg0_set_busdev(pcie, busdev); |
| 728 | return pcie->cfg0 + offset; |
| 729 | } else { |
| 730 | ls_pcie_cfg1_set_busdev(pcie, busdev); |
| 731 | return pcie->cfg1 + offset; |
| 732 | } |
| 733 | } |
| 734 | |
| 735 | static int ls_pcie_read_config(struct udevice *bus, pci_dev_t bdf, |
| 736 | uint offset, ulong *valuep, |
| 737 | enum pci_size_t size) |
| 738 | { |
| 739 | struct ls_pcie *pcie = dev_get_priv(bus); |
| 740 | void *address; |
| 741 | |
| 742 | if (ls_pcie_addr_valid(pcie, bdf)) { |
| 743 | *valuep = pci_get_ff(size); |
| 744 | return 0; |
| 745 | } |
| 746 | |
| 747 | address = ls_pcie_conf_address(pcie, bdf, offset); |
| 748 | |
| 749 | switch (size) { |
| 750 | case PCI_SIZE_8: |
| 751 | *valuep = readb(address); |
| 752 | return 0; |
| 753 | case PCI_SIZE_16: |
| 754 | *valuep = readw(address); |
| 755 | return 0; |
| 756 | case PCI_SIZE_32: |
| 757 | *valuep = readl(address); |
| 758 | return 0; |
| 759 | default: |
| 760 | return -EINVAL; |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | static int ls_pcie_write_config(struct udevice *bus, pci_dev_t bdf, |
| 765 | uint offset, ulong value, |
| 766 | enum pci_size_t size) |
| 767 | { |
| 768 | struct ls_pcie *pcie = dev_get_priv(bus); |
| 769 | void *address; |
| 770 | |
| 771 | if (ls_pcie_addr_valid(pcie, bdf)) |
| 772 | return 0; |
| 773 | |
| 774 | address = ls_pcie_conf_address(pcie, bdf, offset); |
| 775 | |
| 776 | switch (size) { |
| 777 | case PCI_SIZE_8: |
| 778 | writeb(value, address); |
| 779 | return 0; |
| 780 | case PCI_SIZE_16: |
| 781 | writew(value, address); |
| 782 | return 0; |
| 783 | case PCI_SIZE_32: |
| 784 | writel(value, address); |
| 785 | return 0; |
| 786 | default: |
| 787 | return -EINVAL; |
| 788 | } |
| 789 | } |
| 790 | |
| 791 | /* Clear multi-function bit */ |
| 792 | static void ls_pcie_clear_multifunction(struct ls_pcie *pcie) |
| 793 | { |
| 794 | writeb(PCI_HEADER_TYPE_BRIDGE, pcie->dbi + PCI_HEADER_TYPE); |
| 795 | } |
| 796 | |
| 797 | /* Fix class value */ |
| 798 | static void ls_pcie_fix_class(struct ls_pcie *pcie) |
| 799 | { |
| 800 | writew(PCI_CLASS_BRIDGE_PCI, pcie->dbi + PCI_CLASS_DEVICE); |
| 801 | } |
| 802 | |
| 803 | /* Drop MSG TLP except for Vendor MSG */ |
| 804 | static void ls_pcie_drop_msg_tlp(struct ls_pcie *pcie) |
| 805 | { |
| 806 | u32 val; |
| 807 | |
| 808 | val = dbi_readl(pcie, PCIE_STRFMR1); |
| 809 | val &= 0xDFFFFFFF; |
| 810 | dbi_writel(pcie, val, PCIE_STRFMR1); |
| 811 | } |
| 812 | |
| 813 | /* Disable all bars in RC mode */ |
| 814 | static void ls_pcie_disable_bars(struct ls_pcie *pcie) |
| 815 | { |
| 816 | u32 sriov; |
| 817 | |
| 818 | sriov = in_le32(pcie->dbi + PCIE_SRIOV); |
| 819 | |
| 820 | /* |
| 821 | * TODO: For PCIe controller with SRIOV, the method to disable bars |
| 822 | * is different and more complex, so will add later. |
| 823 | */ |
| 824 | if (PCI_EXT_CAP_ID(sriov) == PCI_EXT_CAP_ID_SRIOV) |
| 825 | return; |
| 826 | |
| 827 | dbi_writel(pcie, 0, PCIE_CS2_OFFSET + PCI_BASE_ADDRESS_0); |
| 828 | dbi_writel(pcie, 0, PCIE_CS2_OFFSET + PCI_BASE_ADDRESS_1); |
| 829 | dbi_writel(pcie, 0, PCIE_CS2_OFFSET + PCI_ROM_ADDRESS1); |
| 830 | } |
| 831 | |
| 832 | static void ls_pcie_setup_ctrl(struct ls_pcie *pcie) |
| 833 | { |
| 834 | ls_pcie_setup_atu(pcie); |
| 835 | |
| 836 | dbi_writel(pcie, 1, PCIE_DBI_RO_WR_EN); |
| 837 | ls_pcie_fix_class(pcie); |
| 838 | ls_pcie_clear_multifunction(pcie); |
| 839 | ls_pcie_drop_msg_tlp(pcie); |
| 840 | dbi_writel(pcie, 0, PCIE_DBI_RO_WR_EN); |
| 841 | |
| 842 | ls_pcie_disable_bars(pcie); |
| 843 | } |
| 844 | |
| 845 | static void ls_pcie_ep_setup_atu(struct ls_pcie *pcie) |
| 846 | { |
| 847 | u64 phys = CONFIG_SYS_PCI_EP_MEMORY_BASE; |
| 848 | |
| 849 | /* ATU 0 : INBOUND : map BAR0 */ |
| 850 | ls_pcie_atu_inbound_set(pcie, 0, 0, phys); |
| 851 | /* ATU 1 : INBOUND : map BAR1 */ |
| 852 | phys += PCIE_BAR1_SIZE; |
| 853 | ls_pcie_atu_inbound_set(pcie, 1, 1, phys); |
| 854 | /* ATU 2 : INBOUND : map BAR2 */ |
| 855 | phys += PCIE_BAR2_SIZE; |
| 856 | ls_pcie_atu_inbound_set(pcie, 2, 2, phys); |
| 857 | /* ATU 3 : INBOUND : map BAR4 */ |
| 858 | phys = CONFIG_SYS_PCI_EP_MEMORY_BASE + PCIE_BAR4_SIZE; |
| 859 | ls_pcie_atu_inbound_set(pcie, 3, 4, phys); |
| 860 | |
| 861 | /* ATU 0 : OUTBOUND : map MEM */ |
| 862 | ls_pcie_atu_outbound_set(pcie, 0, |
| 863 | PCIE_ATU_TYPE_MEM, |
| 864 | pcie->cfg_res.start, |
| 865 | 0, |
| 866 | CONFIG_SYS_PCI_MEMORY_SIZE); |
| 867 | } |
| 868 | |
| 869 | /* BAR0 and BAR1 are 32bit BAR2 and BAR4 are 64bit */ |
| 870 | static void ls_pcie_ep_setup_bar(void *bar_base, int bar, u32 size) |
| 871 | { |
| 872 | /* The least inbound window is 4KiB */ |
| 873 | if (size < 4 * 1024) |
| 874 | return; |
| 875 | |
| 876 | switch (bar) { |
| 877 | case 0: |
| 878 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_0); |
| 879 | break; |
| 880 | case 1: |
| 881 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_1); |
| 882 | break; |
| 883 | case 2: |
| 884 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_2); |
| 885 | writel(0, bar_base + PCI_BASE_ADDRESS_3); |
| 886 | break; |
| 887 | case 4: |
| 888 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_4); |
| 889 | writel(0, bar_base + PCI_BASE_ADDRESS_5); |
| 890 | break; |
| 891 | default: |
| 892 | break; |
| 893 | } |
| 894 | } |
| 895 | |
| 896 | static void ls_pcie_ep_setup_bars(void *bar_base) |
| 897 | { |
| 898 | /* BAR0 - 32bit - 4K configuration */ |
| 899 | ls_pcie_ep_setup_bar(bar_base, 0, PCIE_BAR0_SIZE); |
| 900 | /* BAR1 - 32bit - 8K MSIX*/ |
| 901 | ls_pcie_ep_setup_bar(bar_base, 1, PCIE_BAR1_SIZE); |
| 902 | /* BAR2 - 64bit - 4K MEM desciptor */ |
| 903 | ls_pcie_ep_setup_bar(bar_base, 2, PCIE_BAR2_SIZE); |
| 904 | /* BAR4 - 64bit - 1M MEM*/ |
| 905 | ls_pcie_ep_setup_bar(bar_base, 4, PCIE_BAR4_SIZE); |
| 906 | } |
| 907 | |
| 908 | static void ls_pcie_setup_ep(struct ls_pcie *pcie) |
| 909 | { |
| 910 | u32 sriov; |
| 911 | |
| 912 | sriov = readl(pcie->dbi + PCIE_SRIOV); |
| 913 | if (PCI_EXT_CAP_ID(sriov) == PCI_EXT_CAP_ID_SRIOV) { |
| 914 | int pf, vf; |
| 915 | |
| 916 | for (pf = 0; pf < PCIE_PF_NUM; pf++) { |
| 917 | for (vf = 0; vf <= PCIE_VF_NUM; vf++) { |
| 918 | ctrl_writel(pcie, PCIE_LCTRL0_VAL(pf, vf), |
| 919 | PCIE_PF_VF_CTRL); |
| 920 | |
| 921 | ls_pcie_ep_setup_bars(pcie->dbi); |
| 922 | ls_pcie_ep_setup_atu(pcie); |
| 923 | } |
| 924 | } |
| 925 | /* Disable CFG2 */ |
| 926 | ctrl_writel(pcie, 0, PCIE_PF_VF_CTRL); |
| 927 | } else { |
| 928 | ls_pcie_ep_setup_bars(pcie->dbi + PCIE_NO_SRIOV_BAR_BASE); |
| 929 | ls_pcie_ep_setup_atu(pcie); |
| 930 | } |
| 931 | } |
| 932 | |
| 933 | static int ls_pcie_probe(struct udevice *dev) |
| 934 | { |
| 935 | struct ls_pcie *pcie = dev_get_priv(dev); |
| 936 | const void *fdt = gd->fdt_blob; |
| 937 | int node = dev->of_offset; |
| 938 | u8 header_type; |
| 939 | u16 link_sta; |
| 940 | bool ep_mode; |
| 941 | int ret; |
| 942 | |
| 943 | pcie->bus = dev; |
| 944 | |
| 945 | ret = fdt_get_named_resource(fdt, node, "reg", "reg-names", |
| 946 | "dbi", &pcie->dbi_res); |
| 947 | if (ret) { |
| 948 | printf("ls-pcie: resource \"dbi\" not found\n"); |
| 949 | return ret; |
| 950 | } |
| 951 | |
| 952 | pcie->idx = (pcie->dbi_res.start - PCIE_SYS_BASE_ADDR) / PCIE_CCSR_SIZE; |
| 953 | |
| 954 | list_add(&pcie->list, &ls_pcie_list); |
| 955 | |
| 956 | pcie->enabled = is_serdes_configured(PCIE_SRDS_PRTCL(pcie->idx)); |
| 957 | if (!pcie->enabled) { |
| 958 | printf("PCIe%d: %s disabled\n", pcie->idx, dev->name); |
| 959 | return 0; |
| 960 | } |
| 961 | |
| 962 | pcie->dbi = map_physmem(pcie->dbi_res.start, |
| 963 | fdt_resource_size(&pcie->dbi_res), |
| 964 | MAP_NOCACHE); |
| 965 | |
| 966 | ret = fdt_get_named_resource(fdt, node, "reg", "reg-names", |
| 967 | "lut", &pcie->lut_res); |
| 968 | if (!ret) |
| 969 | pcie->lut = map_physmem(pcie->lut_res.start, |
| 970 | fdt_resource_size(&pcie->lut_res), |
| 971 | MAP_NOCACHE); |
| 972 | |
| 973 | ret = fdt_get_named_resource(fdt, node, "reg", "reg-names", |
| 974 | "ctrl", &pcie->ctrl_res); |
| 975 | if (!ret) |
| 976 | pcie->ctrl = map_physmem(pcie->ctrl_res.start, |
| 977 | fdt_resource_size(&pcie->ctrl_res), |
| 978 | MAP_NOCACHE); |
| 979 | if (!pcie->ctrl) |
| 980 | pcie->ctrl = pcie->lut; |
| 981 | |
| 982 | if (!pcie->ctrl) { |
| 983 | printf("%s: NOT find CTRL\n", dev->name); |
| 984 | return -1; |
| 985 | } |
| 986 | |
| 987 | ret = fdt_get_named_resource(fdt, node, "reg", "reg-names", |
| 988 | "config", &pcie->cfg_res); |
| 989 | if (ret) { |
| 990 | printf("%s: resource \"config\" not found\n", dev->name); |
| 991 | return ret; |
| 992 | } |
| 993 | |
| 994 | pcie->cfg0 = map_physmem(pcie->cfg_res.start, |
| 995 | fdt_resource_size(&pcie->cfg_res), |
| 996 | MAP_NOCACHE); |
| 997 | pcie->cfg1 = pcie->cfg0 + fdt_resource_size(&pcie->cfg_res) / 2; |
| 998 | |
| 999 | pcie->big_endian = fdtdec_get_bool(fdt, node, "big-endian"); |
| 1000 | |
| 1001 | debug("%s dbi:%lx lut:%lx ctrl:0x%lx cfg0:0x%lx, big-endian:%d\n", |
| 1002 | dev->name, (unsigned long)pcie->dbi, (unsigned long)pcie->lut, |
| 1003 | (unsigned long)pcie->ctrl, (unsigned long)pcie->cfg0, |
| 1004 | pcie->big_endian); |
| 1005 | |
| 1006 | header_type = readb(pcie->dbi + PCI_HEADER_TYPE); |
| 1007 | ep_mode = (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL; |
| 1008 | printf("PCIe%u: %s %s", pcie->idx, dev->name, |
| 1009 | ep_mode ? "Endpoint" : "Root Complex"); |
| 1010 | |
| 1011 | if (ep_mode) |
| 1012 | ls_pcie_setup_ep(pcie); |
| 1013 | else |
| 1014 | ls_pcie_setup_ctrl(pcie); |
| 1015 | |
| 1016 | if (!ls_pcie_link_up(pcie)) { |
| 1017 | /* Let the user know there's no PCIe link */ |
| 1018 | printf(": no link\n"); |
| 1019 | return 0; |
| 1020 | } |
| 1021 | |
| 1022 | /* Print the negotiated PCIe link width */ |
| 1023 | link_sta = readw(pcie->dbi + PCIE_LINK_STA); |
| 1024 | printf(": x%d gen%d\n", (link_sta & PCIE_LINK_WIDTH_MASK) >> 4, |
| 1025 | link_sta & PCIE_LINK_SPEED_MASK); |
| 1026 | |
| 1027 | return 0; |
| 1028 | } |
| 1029 | |
| 1030 | static const struct dm_pci_ops ls_pcie_ops = { |
| 1031 | .read_config = ls_pcie_read_config, |
| 1032 | .write_config = ls_pcie_write_config, |
| 1033 | }; |
| 1034 | |
| 1035 | static const struct udevice_id ls_pcie_ids[] = { |
| 1036 | { .compatible = "fsl,ls-pcie" }, |
| 1037 | { } |
| 1038 | }; |
| 1039 | |
| 1040 | U_BOOT_DRIVER(pci_layerscape) = { |
| 1041 | .name = "pci_layerscape", |
| 1042 | .id = UCLASS_PCI, |
| 1043 | .of_match = ls_pcie_ids, |
| 1044 | .ops = &ls_pcie_ops, |
| 1045 | .probe = ls_pcie_probe, |
| 1046 | .priv_auto_alloc_size = sizeof(struct ls_pcie), |
| 1047 | }; |
| 1048 | #endif /* CONFIG_DM_PCI */ |