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 | 9f3183d | 2015-10-26 19:47:50 +0800 | [diff] [blame] | 14 | #ifdef CONFIG_FSL_LAYERSCAPE |
| 15 | #include <asm/arch/fdt.h> |
| 16 | #endif |
Minghuan Lian | da41902 | 2014-10-31 13:43:44 +0800 | [diff] [blame] | 17 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 18 | #ifndef CONFIG_SYS_PCI_MEMORY_BUS |
| 19 | #define CONFIG_SYS_PCI_MEMORY_BUS CONFIG_SYS_SDRAM_BASE |
| 20 | #endif |
| 21 | |
| 22 | #ifndef CONFIG_SYS_PCI_MEMORY_PHYS |
| 23 | #define CONFIG_SYS_PCI_MEMORY_PHYS CONFIG_SYS_SDRAM_BASE |
| 24 | #endif |
| 25 | |
| 26 | #ifndef CONFIG_SYS_PCI_MEMORY_SIZE |
| 27 | #define CONFIG_SYS_PCI_MEMORY_SIZE (2 * 1024 * 1024 * 1024UL) /* 2G */ |
| 28 | #endif |
| 29 | |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 30 | #ifndef CONFIG_SYS_PCI_EP_MEMORY_BASE |
| 31 | #define CONFIG_SYS_PCI_EP_MEMORY_BASE CONFIG_SYS_LOAD_ADDR |
| 32 | #endif |
| 33 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 34 | /* iATU registers */ |
| 35 | #define PCIE_ATU_VIEWPORT 0x900 |
| 36 | #define PCIE_ATU_REGION_INBOUND (0x1 << 31) |
| 37 | #define PCIE_ATU_REGION_OUTBOUND (0x0 << 31) |
| 38 | #define PCIE_ATU_REGION_INDEX0 (0x0 << 0) |
| 39 | #define PCIE_ATU_REGION_INDEX1 (0x1 << 0) |
| 40 | #define PCIE_ATU_REGION_INDEX2 (0x2 << 0) |
| 41 | #define PCIE_ATU_REGION_INDEX3 (0x3 << 0) |
| 42 | #define PCIE_ATU_CR1 0x904 |
| 43 | #define PCIE_ATU_TYPE_MEM (0x0 << 0) |
| 44 | #define PCIE_ATU_TYPE_IO (0x2 << 0) |
| 45 | #define PCIE_ATU_TYPE_CFG0 (0x4 << 0) |
| 46 | #define PCIE_ATU_TYPE_CFG1 (0x5 << 0) |
| 47 | #define PCIE_ATU_CR2 0x908 |
| 48 | #define PCIE_ATU_ENABLE (0x1 << 31) |
| 49 | #define PCIE_ATU_BAR_MODE_ENABLE (0x1 << 30) |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 50 | #define PCIE_ATU_BAR_NUM(bar) ((bar) << 8) |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 51 | #define PCIE_ATU_LOWER_BASE 0x90C |
| 52 | #define PCIE_ATU_UPPER_BASE 0x910 |
| 53 | #define PCIE_ATU_LIMIT 0x914 |
| 54 | #define PCIE_ATU_LOWER_TARGET 0x918 |
| 55 | #define PCIE_ATU_BUS(x) (((x) & 0xff) << 24) |
| 56 | #define PCIE_ATU_DEV(x) (((x) & 0x1f) << 19) |
| 57 | #define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16) |
| 58 | #define PCIE_ATU_UPPER_TARGET 0x91C |
| 59 | |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 60 | /* LUT registers */ |
| 61 | #define PCIE_LUT_BASE 0x80000 |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 62 | #define PCIE_LUT_LCTRL0 0x7F8 |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 63 | #define PCIE_LUT_DBG 0x7FC |
| 64 | |
| 65 | #define PCIE_DBI_RO_WR_EN 0x8bc |
| 66 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 67 | #define PCIE_LINK_CAP 0x7c |
| 68 | #define PCIE_LINK_SPEED_MASK 0xf |
| 69 | #define PCIE_LINK_STA 0x82 |
| 70 | |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 71 | #define LTSSM_STATE_MASK 0x3f |
| 72 | #define LTSSM_PCIE_L0 0x11 /* L0 state */ |
| 73 | |
| 74 | #define PCIE_DBI_SIZE 0x100000 /* 1M */ |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 75 | |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 76 | #define PCIE_LCTRL0_CFG2_ENABLE (1 << 31) |
| 77 | #define PCIE_LCTRL0_VF(vf) ((vf) << 22) |
| 78 | #define PCIE_LCTRL0_PF(pf) ((pf) << 16) |
| 79 | #define PCIE_LCTRL0_VF_ACTIVE (1 << 21) |
| 80 | #define PCIE_LCTRL0_VAL(pf, vf) (PCIE_LCTRL0_PF(pf) | \ |
| 81 | PCIE_LCTRL0_VF(vf) | \ |
| 82 | ((vf) == 0 ? 0 : PCIE_LCTRL0_VF_ACTIVE) | \ |
| 83 | PCIE_LCTRL0_CFG2_ENABLE) |
| 84 | |
| 85 | #define PCIE_NO_SRIOV_BAR_BASE 0x1000 |
| 86 | |
| 87 | #define PCIE_PF_NUM 2 |
| 88 | #define PCIE_VF_NUM 64 |
| 89 | |
| 90 | #define PCIE_BAR0_SIZE (4 * 1024) /* 4K */ |
| 91 | #define PCIE_BAR1_SIZE (8 * 1024) /* 8K for MSIX */ |
| 92 | #define PCIE_BAR2_SIZE (4 * 1024) /* 4K */ |
| 93 | #define PCIE_BAR4_SIZE (1 * 1024 * 1024) /* 1M */ |
| 94 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 95 | struct ls_pcie { |
| 96 | int idx; |
| 97 | void __iomem *dbi; |
| 98 | void __iomem *va_cfg0; |
| 99 | void __iomem *va_cfg1; |
| 100 | struct pci_controller hose; |
| 101 | }; |
| 102 | |
| 103 | struct ls_pcie_info { |
| 104 | unsigned long regs; |
| 105 | int pci_num; |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 106 | u64 phys_base; |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 107 | u64 cfg0_phys; |
| 108 | u64 cfg0_size; |
| 109 | u64 cfg1_phys; |
| 110 | u64 cfg1_size; |
| 111 | u64 mem_bus; |
| 112 | u64 mem_phys; |
| 113 | u64 mem_size; |
| 114 | u64 io_bus; |
| 115 | u64 io_phys; |
| 116 | u64 io_size; |
| 117 | }; |
| 118 | |
| 119 | #define SET_LS_PCIE_INFO(x, num) \ |
| 120 | { \ |
| 121 | x.regs = CONFIG_SYS_PCIE##num##_ADDR; \ |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 122 | x.phys_base = CONFIG_SYS_PCIE##num##_PHYS_ADDR; \ |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 123 | x.cfg0_phys = CONFIG_SYS_PCIE_CFG0_PHYS_OFF + \ |
| 124 | CONFIG_SYS_PCIE##num##_PHYS_ADDR; \ |
| 125 | x.cfg0_size = CONFIG_SYS_PCIE_CFG0_SIZE; \ |
| 126 | x.cfg1_phys = CONFIG_SYS_PCIE_CFG1_PHYS_OFF + \ |
| 127 | CONFIG_SYS_PCIE##num##_PHYS_ADDR; \ |
| 128 | x.cfg1_size = CONFIG_SYS_PCIE_CFG1_SIZE; \ |
| 129 | x.mem_bus = CONFIG_SYS_PCIE_MEM_BUS; \ |
| 130 | x.mem_phys = CONFIG_SYS_PCIE_MEM_PHYS_OFF + \ |
| 131 | CONFIG_SYS_PCIE##num##_PHYS_ADDR; \ |
| 132 | x.mem_size = CONFIG_SYS_PCIE_MEM_SIZE; \ |
| 133 | x.io_bus = CONFIG_SYS_PCIE_IO_BUS; \ |
| 134 | x.io_phys = CONFIG_SYS_PCIE_IO_PHYS_OFF + \ |
| 135 | CONFIG_SYS_PCIE##num##_PHYS_ADDR; \ |
| 136 | x.io_size = CONFIG_SYS_PCIE_IO_SIZE; \ |
| 137 | x.pci_num = num; \ |
| 138 | } |
| 139 | |
| 140 | #ifdef CONFIG_LS102XA |
| 141 | #include <asm/arch/immap_ls102xa.h> |
| 142 | |
| 143 | /* PEX1/2 Misc Ports Status Register */ |
| 144 | #define LTSSM_STATE_SHIFT 20 |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 145 | |
| 146 | static int ls_pcie_link_state(struct ls_pcie *pcie) |
| 147 | { |
| 148 | u32 state; |
| 149 | struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR; |
| 150 | |
| 151 | state = in_be32(&scfg->pexmscportsr[pcie->idx]); |
| 152 | state = (state >> LTSSM_STATE_SHIFT) & LTSSM_STATE_MASK; |
| 153 | if (state < LTSSM_PCIE_L0) { |
| 154 | debug("....PCIe link error. LTSSM=0x%02x.\n", state); |
| 155 | return 0; |
| 156 | } |
| 157 | |
| 158 | return 1; |
| 159 | } |
| 160 | #else |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 161 | static int ls_pcie_link_state(struct ls_pcie *pcie) |
| 162 | { |
| 163 | u32 state; |
| 164 | |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 165 | state = readl(pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_DBG) & |
| 166 | LTSSM_STATE_MASK; |
| 167 | if (state < LTSSM_PCIE_L0) { |
| 168 | debug("....PCIe link error. LTSSM=0x%02x.\n", state); |
| 169 | return 0; |
| 170 | } |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 171 | |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 172 | return 1; |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 173 | } |
| 174 | #endif |
| 175 | |
| 176 | static int ls_pcie_link_up(struct ls_pcie *pcie) |
| 177 | { |
| 178 | int state; |
| 179 | u32 cap; |
| 180 | |
| 181 | state = ls_pcie_link_state(pcie); |
| 182 | if (state) |
| 183 | return state; |
| 184 | |
| 185 | /* Try to download speed to gen1 */ |
| 186 | cap = readl(pcie->dbi + PCIE_LINK_CAP); |
| 187 | writel((cap & (~PCIE_LINK_SPEED_MASK)) | 1, pcie->dbi + PCIE_LINK_CAP); |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 188 | /* |
| 189 | * Notice: the following delay has critical impact on link training |
| 190 | * if too short (<30ms) the link doesn't get up. |
| 191 | */ |
| 192 | mdelay(100); |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 193 | state = ls_pcie_link_state(pcie); |
| 194 | if (state) |
| 195 | return state; |
| 196 | |
| 197 | writel(cap, pcie->dbi + PCIE_LINK_CAP); |
| 198 | |
| 199 | return 0; |
| 200 | } |
| 201 | |
| 202 | static void ls_pcie_cfg0_set_busdev(struct ls_pcie *pcie, u32 busdev) |
| 203 | { |
| 204 | writel(PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX0, |
| 205 | pcie->dbi + PCIE_ATU_VIEWPORT); |
| 206 | writel(busdev, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 207 | } |
| 208 | |
| 209 | static void ls_pcie_cfg1_set_busdev(struct ls_pcie *pcie, u32 busdev) |
| 210 | { |
| 211 | writel(PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX1, |
| 212 | pcie->dbi + PCIE_ATU_VIEWPORT); |
| 213 | writel(busdev, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 214 | } |
| 215 | |
| 216 | static void ls_pcie_iatu_outbound_set(struct ls_pcie *pcie, int idx, int type, |
| 217 | u64 phys, u64 bus_addr, pci_size_t size) |
| 218 | { |
| 219 | writel(PCIE_ATU_REGION_OUTBOUND | idx, pcie->dbi + PCIE_ATU_VIEWPORT); |
| 220 | writel((u32)phys, pcie->dbi + PCIE_ATU_LOWER_BASE); |
| 221 | writel(phys >> 32, pcie->dbi + PCIE_ATU_UPPER_BASE); |
| 222 | writel(phys + size - 1, pcie->dbi + PCIE_ATU_LIMIT); |
| 223 | writel((u32)bus_addr, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 224 | writel(bus_addr >> 32, pcie->dbi + PCIE_ATU_UPPER_TARGET); |
| 225 | writel(type, pcie->dbi + PCIE_ATU_CR1); |
| 226 | writel(PCIE_ATU_ENABLE, pcie->dbi + PCIE_ATU_CR2); |
| 227 | } |
| 228 | |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 229 | /* Use bar match mode and MEM type as default */ |
| 230 | static void ls_pcie_iatu_inbound_set(struct ls_pcie *pcie, int idx, |
| 231 | int bar, u64 phys) |
| 232 | { |
| 233 | writel(PCIE_ATU_REGION_INBOUND | idx, pcie->dbi + PCIE_ATU_VIEWPORT); |
| 234 | writel((u32)phys, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| 235 | writel(phys >> 32, pcie->dbi + PCIE_ATU_UPPER_TARGET); |
| 236 | writel(PCIE_ATU_TYPE_MEM, pcie->dbi + PCIE_ATU_CR1); |
| 237 | writel(PCIE_ATU_ENABLE | PCIE_ATU_BAR_MODE_ENABLE | |
| 238 | PCIE_ATU_BAR_NUM(bar), pcie->dbi + PCIE_ATU_CR2); |
| 239 | } |
| 240 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 241 | static void ls_pcie_setup_atu(struct ls_pcie *pcie, struct ls_pcie_info *info) |
| 242 | { |
| 243 | #ifdef DEBUG |
| 244 | int i; |
| 245 | #endif |
| 246 | |
| 247 | /* ATU 0 : OUTBOUND : CFG0 */ |
| 248 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0, |
| 249 | PCIE_ATU_TYPE_CFG0, |
| 250 | info->cfg0_phys, |
| 251 | 0, |
| 252 | info->cfg0_size); |
| 253 | /* ATU 1 : OUTBOUND : CFG1 */ |
| 254 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX1, |
| 255 | PCIE_ATU_TYPE_CFG1, |
| 256 | info->cfg1_phys, |
| 257 | 0, |
| 258 | info->cfg1_size); |
| 259 | /* ATU 2 : OUTBOUND : MEM */ |
| 260 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX2, |
| 261 | PCIE_ATU_TYPE_MEM, |
| 262 | info->mem_phys, |
| 263 | info->mem_bus, |
| 264 | info->mem_size); |
| 265 | /* ATU 3 : OUTBOUND : IO */ |
| 266 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX3, |
| 267 | PCIE_ATU_TYPE_IO, |
| 268 | info->io_phys, |
| 269 | info->io_bus, |
| 270 | info->io_size); |
| 271 | |
| 272 | #ifdef DEBUG |
| 273 | for (i = 0; i <= PCIE_ATU_REGION_INDEX3; i++) { |
| 274 | writel(PCIE_ATU_REGION_OUTBOUND | i, |
| 275 | pcie->dbi + PCIE_ATU_VIEWPORT); |
| 276 | debug("iATU%d:\n", i); |
| 277 | debug("\tLOWER PHYS 0x%08x\n", |
| 278 | readl(pcie->dbi + PCIE_ATU_LOWER_BASE)); |
| 279 | debug("\tUPPER PHYS 0x%08x\n", |
| 280 | readl(pcie->dbi + PCIE_ATU_UPPER_BASE)); |
| 281 | debug("\tLOWER BUS 0x%08x\n", |
| 282 | readl(pcie->dbi + PCIE_ATU_LOWER_TARGET)); |
| 283 | debug("\tUPPER BUS 0x%08x\n", |
| 284 | readl(pcie->dbi + PCIE_ATU_UPPER_TARGET)); |
| 285 | debug("\tLIMIT 0x%08x\n", |
| 286 | readl(pcie->dbi + PCIE_ATU_LIMIT)); |
| 287 | debug("\tCR1 0x%08x\n", |
| 288 | readl(pcie->dbi + PCIE_ATU_CR1)); |
| 289 | debug("\tCR2 0x%08x\n", |
| 290 | readl(pcie->dbi + PCIE_ATU_CR2)); |
| 291 | } |
| 292 | #endif |
| 293 | } |
| 294 | |
| 295 | int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev) |
| 296 | { |
| 297 | /* Do not skip controller */ |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | static int ls_pcie_addr_valid(struct pci_controller *hose, pci_dev_t d) |
| 302 | { |
| 303 | if (PCI_DEV(d) > 0) |
| 304 | return -EINVAL; |
| 305 | |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 306 | /* Controller does not support multi-function in RC mode */ |
| 307 | if ((PCI_BUS(d) == hose->first_busno) && (PCI_FUNC(d) > 0)) |
| 308 | return -EINVAL; |
| 309 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 310 | return 0; |
| 311 | } |
| 312 | |
| 313 | static int ls_pcie_read_config(struct pci_controller *hose, pci_dev_t d, |
| 314 | int where, u32 *val) |
| 315 | { |
| 316 | struct ls_pcie *pcie = hose->priv_data; |
| 317 | u32 busdev, *addr; |
| 318 | |
| 319 | if (ls_pcie_addr_valid(hose, d)) { |
| 320 | *val = 0xffffffff; |
| 321 | return -EINVAL; |
| 322 | } |
| 323 | |
| 324 | if (PCI_BUS(d) == hose->first_busno) { |
| 325 | addr = pcie->dbi + (where & ~0x3); |
| 326 | } else { |
| 327 | busdev = PCIE_ATU_BUS(PCI_BUS(d)) | |
| 328 | PCIE_ATU_DEV(PCI_DEV(d)) | |
| 329 | PCIE_ATU_FUNC(PCI_FUNC(d)); |
| 330 | |
| 331 | if (PCI_BUS(d) == hose->first_busno + 1) { |
| 332 | ls_pcie_cfg0_set_busdev(pcie, busdev); |
| 333 | addr = pcie->va_cfg0 + (where & ~0x3); |
| 334 | } else { |
| 335 | ls_pcie_cfg1_set_busdev(pcie, busdev); |
| 336 | addr = pcie->va_cfg1 + (where & ~0x3); |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | *val = readl(addr); |
| 341 | |
| 342 | return 0; |
| 343 | } |
| 344 | |
| 345 | static int ls_pcie_write_config(struct pci_controller *hose, pci_dev_t d, |
| 346 | int where, u32 val) |
| 347 | { |
| 348 | struct ls_pcie *pcie = hose->priv_data; |
| 349 | u32 busdev, *addr; |
| 350 | |
| 351 | if (ls_pcie_addr_valid(hose, d)) |
| 352 | return -EINVAL; |
| 353 | |
| 354 | if (PCI_BUS(d) == hose->first_busno) { |
| 355 | addr = pcie->dbi + (where & ~0x3); |
| 356 | } else { |
| 357 | busdev = PCIE_ATU_BUS(PCI_BUS(d)) | |
| 358 | PCIE_ATU_DEV(PCI_DEV(d)) | |
| 359 | PCIE_ATU_FUNC(PCI_FUNC(d)); |
| 360 | |
| 361 | if (PCI_BUS(d) == hose->first_busno + 1) { |
| 362 | ls_pcie_cfg0_set_busdev(pcie, busdev); |
| 363 | addr = pcie->va_cfg0 + (where & ~0x3); |
| 364 | } else { |
| 365 | ls_pcie_cfg1_set_busdev(pcie, busdev); |
| 366 | addr = pcie->va_cfg1 + (where & ~0x3); |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | writel(val, addr); |
| 371 | |
| 372 | return 0; |
| 373 | } |
| 374 | |
| 375 | static void ls_pcie_setup_ctrl(struct ls_pcie *pcie, |
| 376 | struct ls_pcie_info *info) |
| 377 | { |
| 378 | struct pci_controller *hose = &pcie->hose; |
| 379 | pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0); |
| 380 | |
| 381 | ls_pcie_setup_atu(pcie, info); |
| 382 | |
| 383 | pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0); |
| 384 | |
| 385 | /* program correct class for RC */ |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 386 | writel(1, pcie->dbi + PCIE_DBI_RO_WR_EN); |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 387 | pci_hose_write_config_word(hose, dev, PCI_CLASS_DEVICE, |
| 388 | PCI_CLASS_BRIDGE_PCI); |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 389 | #ifndef CONFIG_LS102XA |
| 390 | writel(0, pcie->dbi + PCIE_DBI_RO_WR_EN); |
| 391 | #endif |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 392 | } |
| 393 | |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 394 | static void ls_pcie_ep_setup_atu(struct ls_pcie *pcie, |
| 395 | struct ls_pcie_info *info) |
| 396 | { |
| 397 | u64 phys = CONFIG_SYS_PCI_EP_MEMORY_BASE; |
| 398 | |
| 399 | /* ATU 0 : INBOUND : map BAR0 */ |
| 400 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX0, 0, phys); |
| 401 | /* ATU 1 : INBOUND : map BAR1 */ |
| 402 | phys += PCIE_BAR1_SIZE; |
| 403 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX1, 1, phys); |
| 404 | /* ATU 2 : INBOUND : map BAR2 */ |
| 405 | phys += PCIE_BAR2_SIZE; |
| 406 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX2, 2, phys); |
| 407 | /* ATU 3 : INBOUND : map BAR4 */ |
| 408 | phys = CONFIG_SYS_PCI_EP_MEMORY_BASE + PCIE_BAR4_SIZE; |
| 409 | ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX3, 4, phys); |
| 410 | |
| 411 | /* ATU 0 : OUTBOUND : map 4G MEM */ |
| 412 | ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0, |
| 413 | PCIE_ATU_TYPE_MEM, |
| 414 | info->phys_base, |
| 415 | 0, |
| 416 | 4 * 1024 * 1024 * 1024ULL); |
| 417 | } |
| 418 | |
| 419 | /* BAR0 and BAR1 are 32bit BAR2 and BAR4 are 64bit */ |
| 420 | static void ls_pcie_ep_setup_bar(void *bar_base, int bar, u32 size) |
| 421 | { |
| 422 | if (size < 4 * 1024) |
| 423 | return; |
| 424 | |
| 425 | switch (bar) { |
| 426 | case 0: |
| 427 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_0); |
| 428 | break; |
| 429 | case 1: |
| 430 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_1); |
| 431 | break; |
| 432 | case 2: |
| 433 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_2); |
| 434 | writel(0, bar_base + PCI_BASE_ADDRESS_3); |
| 435 | break; |
| 436 | case 4: |
| 437 | writel(size - 1, bar_base + PCI_BASE_ADDRESS_4); |
| 438 | writel(0, bar_base + PCI_BASE_ADDRESS_5); |
| 439 | break; |
| 440 | default: |
| 441 | break; |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | static void ls_pcie_ep_setup_bars(void *bar_base) |
| 446 | { |
| 447 | /* BAR0 - 32bit - 4K configuration */ |
| 448 | ls_pcie_ep_setup_bar(bar_base, 0, PCIE_BAR0_SIZE); |
| 449 | /* BAR1 - 32bit - 8K MSIX*/ |
| 450 | ls_pcie_ep_setup_bar(bar_base, 1, PCIE_BAR1_SIZE); |
| 451 | /* BAR2 - 64bit - 4K MEM desciptor */ |
| 452 | ls_pcie_ep_setup_bar(bar_base, 2, PCIE_BAR2_SIZE); |
| 453 | /* BAR4 - 64bit - 1M MEM*/ |
| 454 | ls_pcie_ep_setup_bar(bar_base, 4, PCIE_BAR4_SIZE); |
| 455 | } |
| 456 | |
| 457 | static void ls_pcie_setup_ep(struct ls_pcie *pcie, struct ls_pcie_info *info) |
| 458 | { |
| 459 | struct pci_controller *hose = &pcie->hose; |
| 460 | pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0); |
| 461 | int sriov; |
| 462 | |
| 463 | sriov = pci_hose_find_ext_capability(hose, dev, PCI_EXT_CAP_ID_SRIOV); |
| 464 | if (sriov) { |
| 465 | int pf, vf; |
| 466 | |
| 467 | for (pf = 0; pf < PCIE_PF_NUM; pf++) { |
| 468 | for (vf = 0; vf <= PCIE_VF_NUM; vf++) { |
| 469 | writel(PCIE_LCTRL0_VAL(pf, vf), |
| 470 | pcie->dbi + PCIE_LUT_BASE + |
| 471 | PCIE_LUT_LCTRL0); |
| 472 | ls_pcie_ep_setup_bars(pcie->dbi); |
| 473 | ls_pcie_ep_setup_atu(pcie, info); |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | /* Disable CFG2 */ |
| 478 | writel(0, pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_LCTRL0); |
| 479 | } else { |
| 480 | ls_pcie_ep_setup_bars(pcie->dbi + PCIE_NO_SRIOV_BAR_BASE); |
| 481 | ls_pcie_ep_setup_atu(pcie, info); |
| 482 | } |
| 483 | } |
| 484 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 485 | int ls_pcie_init_ctrl(int busno, enum srds_prtcl dev, struct ls_pcie_info *info) |
| 486 | { |
| 487 | struct ls_pcie *pcie; |
| 488 | struct pci_controller *hose; |
| 489 | int num = dev - PCIE1; |
| 490 | pci_dev_t pdev = PCI_BDF(busno, 0, 0); |
| 491 | int i, linkup, ep_mode; |
| 492 | u8 header_type; |
| 493 | u16 temp16; |
| 494 | |
| 495 | if (!is_serdes_configured(dev)) { |
| 496 | printf("PCIe%d: disabled\n", num + 1); |
| 497 | return busno; |
| 498 | } |
| 499 | |
| 500 | pcie = malloc(sizeof(*pcie)); |
| 501 | if (!pcie) |
| 502 | return busno; |
| 503 | memset(pcie, 0, sizeof(*pcie)); |
| 504 | |
| 505 | hose = &pcie->hose; |
| 506 | hose->priv_data = pcie; |
| 507 | hose->first_busno = busno; |
| 508 | pcie->idx = num; |
| 509 | pcie->dbi = map_physmem(info->regs, PCIE_DBI_SIZE, MAP_NOCACHE); |
| 510 | pcie->va_cfg0 = map_physmem(info->cfg0_phys, |
| 511 | info->cfg0_size, |
| 512 | MAP_NOCACHE); |
| 513 | pcie->va_cfg1 = map_physmem(info->cfg1_phys, |
| 514 | info->cfg1_size, |
| 515 | MAP_NOCACHE); |
| 516 | |
| 517 | /* outbound memory */ |
| 518 | pci_set_region(&hose->regions[0], |
| 519 | (pci_size_t)info->mem_bus, |
| 520 | (phys_size_t)info->mem_phys, |
| 521 | (pci_size_t)info->mem_size, |
| 522 | PCI_REGION_MEM); |
| 523 | |
| 524 | /* outbound io */ |
| 525 | pci_set_region(&hose->regions[1], |
| 526 | (pci_size_t)info->io_bus, |
| 527 | (phys_size_t)info->io_phys, |
| 528 | (pci_size_t)info->io_size, |
| 529 | PCI_REGION_IO); |
| 530 | |
| 531 | /* System memory space */ |
| 532 | pci_set_region(&hose->regions[2], |
| 533 | CONFIG_SYS_PCI_MEMORY_BUS, |
| 534 | CONFIG_SYS_PCI_MEMORY_PHYS, |
| 535 | CONFIG_SYS_PCI_MEMORY_SIZE, |
| 536 | PCI_REGION_SYS_MEMORY); |
| 537 | |
| 538 | hose->region_count = 3; |
| 539 | |
| 540 | for (i = 0; i < hose->region_count; i++) |
| 541 | debug("PCI reg:%d %016llx:%016llx %016llx %08lx\n", |
| 542 | i, |
| 543 | (u64)hose->regions[i].phys_start, |
| 544 | (u64)hose->regions[i].bus_start, |
| 545 | (u64)hose->regions[i].size, |
| 546 | hose->regions[i].flags); |
| 547 | |
| 548 | pci_set_ops(hose, |
| 549 | pci_hose_read_config_byte_via_dword, |
| 550 | pci_hose_read_config_word_via_dword, |
| 551 | ls_pcie_read_config, |
| 552 | pci_hose_write_config_byte_via_dword, |
| 553 | pci_hose_write_config_word_via_dword, |
| 554 | ls_pcie_write_config); |
| 555 | |
| 556 | pci_hose_read_config_byte(hose, pdev, PCI_HEADER_TYPE, &header_type); |
| 557 | ep_mode = (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL; |
| 558 | printf("PCIe%u: %s ", info->pci_num, |
| 559 | ep_mode ? "Endpoint" : "Root Complex"); |
| 560 | |
Minghuan Lian | 01cafce | 2015-07-10 11:35:09 +0800 | [diff] [blame] | 561 | if (ep_mode) |
| 562 | ls_pcie_setup_ep(pcie, info); |
| 563 | else |
| 564 | ls_pcie_setup_ctrl(pcie, info); |
| 565 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 566 | linkup = ls_pcie_link_up(pcie); |
| 567 | |
| 568 | if (!linkup) { |
| 569 | /* Let the user know there's no PCIe link */ |
| 570 | printf("no link, regs @ 0x%lx\n", info->regs); |
| 571 | hose->last_busno = hose->first_busno; |
| 572 | return busno; |
| 573 | } |
| 574 | |
| 575 | /* Print the negotiated PCIe link width */ |
Minghuan Lian | 0070459 | 2015-03-12 10:58:49 +0800 | [diff] [blame] | 576 | pci_hose_read_config_word(hose, pdev, PCIE_LINK_STA, &temp16); |
| 577 | printf("x%d gen%d, regs @ 0x%lx\n", (temp16 & 0x3f0) >> 4, |
| 578 | (temp16 & 0xf), info->regs); |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 579 | |
| 580 | if (ep_mode) |
| 581 | return busno; |
| 582 | |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 583 | pci_register_hose(hose); |
| 584 | |
| 585 | hose->last_busno = pci_hose_scan(hose); |
| 586 | |
| 587 | printf("PCIe%x: Bus %02x - %02x\n", |
| 588 | info->pci_num, hose->first_busno, hose->last_busno); |
| 589 | |
| 590 | return hose->last_busno + 1; |
| 591 | } |
| 592 | |
| 593 | int ls_pcie_init_board(int busno) |
| 594 | { |
| 595 | struct ls_pcie_info info; |
| 596 | |
| 597 | #ifdef CONFIG_PCIE1 |
| 598 | SET_LS_PCIE_INFO(info, 1); |
| 599 | busno = ls_pcie_init_ctrl(busno, PCIE1, &info); |
| 600 | #endif |
| 601 | |
| 602 | #ifdef CONFIG_PCIE2 |
| 603 | SET_LS_PCIE_INFO(info, 2); |
| 604 | busno = ls_pcie_init_ctrl(busno, PCIE2, &info); |
| 605 | #endif |
| 606 | |
| 607 | #ifdef CONFIG_PCIE3 |
| 608 | SET_LS_PCIE_INFO(info, 3); |
| 609 | busno = ls_pcie_init_ctrl(busno, PCIE3, &info); |
| 610 | #endif |
| 611 | |
| 612 | #ifdef CONFIG_PCIE4 |
| 613 | SET_LS_PCIE_INFO(info, 4); |
| 614 | busno = ls_pcie_init_ctrl(busno, PCIE4, &info); |
| 615 | #endif |
| 616 | |
| 617 | return busno; |
| 618 | } |
| 619 | |
| 620 | void pci_init_board(void) |
| 621 | { |
| 622 | ls_pcie_init_board(0); |
| 623 | } |
| 624 | |
Minghuan Lian | da41902 | 2014-10-31 13:43:44 +0800 | [diff] [blame] | 625 | #ifdef CONFIG_OF_BOARD_SETUP |
| 626 | #include <libfdt.h> |
| 627 | #include <fdt_support.h> |
| 628 | |
| 629 | static void ft_pcie_ls_setup(void *blob, const char *pci_compat, |
| 630 | unsigned long ctrl_addr, enum srds_prtcl dev) |
| 631 | { |
| 632 | int off; |
| 633 | |
| 634 | off = fdt_node_offset_by_compat_reg(blob, pci_compat, |
| 635 | (phys_addr_t)ctrl_addr); |
| 636 | if (off < 0) |
| 637 | return; |
| 638 | |
| 639 | if (!is_serdes_configured(dev)) |
| 640 | fdt_set_node_status(blob, off, FDT_STATUS_DISABLED, 0); |
| 641 | } |
| 642 | |
Minghuan Lian | d42bd34 | 2015-03-12 10:58:48 +0800 | [diff] [blame] | 643 | void ft_pci_setup(void *blob, bd_t *bd) |
Minghuan Lian | da41902 | 2014-10-31 13:43:44 +0800 | [diff] [blame] | 644 | { |
| 645 | #ifdef CONFIG_PCIE1 |
| 646 | ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE1_ADDR, PCIE1); |
| 647 | #endif |
| 648 | |
| 649 | #ifdef CONFIG_PCIE2 |
| 650 | ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE2_ADDR, PCIE2); |
| 651 | #endif |
Minghuan Lian | e4e8cb7 | 2015-01-21 17:29:20 +0800 | [diff] [blame] | 652 | |
| 653 | #ifdef CONFIG_PCIE3 |
| 654 | ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE3_ADDR, PCIE3); |
| 655 | #endif |
| 656 | |
| 657 | #ifdef CONFIG_PCIE4 |
| 658 | ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE4_ADDR, PCIE4); |
| 659 | #endif |
Minghuan Lian | da41902 | 2014-10-31 13:43:44 +0800 | [diff] [blame] | 660 | } |
| 661 | |
| 662 | #else |
Minghuan Lian | d42bd34 | 2015-03-12 10:58:48 +0800 | [diff] [blame] | 663 | void ft_pci_setup(void *blob, bd_t *bd) |
Minghuan Lian | da41902 | 2014-10-31 13:43:44 +0800 | [diff] [blame] | 664 | { |
| 665 | } |
| 666 | #endif |
Stuart Yoder | 70e52d2 | 2015-07-02 11:29:04 +0530 | [diff] [blame] | 667 | |
| 668 | #ifdef CONFIG_LS2085A |
| 669 | |
| 670 | void pcie_set_available_streamids(void *blob, const char *pcie_path, |
| 671 | u32 *stream_ids, int count) |
| 672 | { |
| 673 | int nodeoffset; |
| 674 | int i; |
| 675 | |
| 676 | nodeoffset = fdt_path_offset(blob, pcie_path); |
| 677 | if (nodeoffset < 0) { |
| 678 | printf("\n%s: ERROR: unable to update PCIe node\n", __func__); |
| 679 | return; |
| 680 | } |
| 681 | |
| 682 | /* for each stream ID, append to mmu-masters */ |
| 683 | for (i = 0; i < count; i++) { |
| 684 | fdt_appendprop_u32(blob, nodeoffset, "available-stream-ids", |
| 685 | stream_ids[i]); |
| 686 | } |
| 687 | } |
| 688 | |
| 689 | #define MAX_STREAM_IDS 4 |
| 690 | void fdt_fixup_smmu_pcie(void *blob) |
| 691 | { |
| 692 | int count; |
| 693 | u32 stream_ids[MAX_STREAM_IDS]; |
Varun Sethi | 6923b06 | 2015-07-29 00:03:47 +0530 | [diff] [blame] | 694 | u32 ctlr_streamid = 0x300; |
Stuart Yoder | 70e52d2 | 2015-07-02 11:29:04 +0530 | [diff] [blame] | 695 | |
| 696 | #ifdef CONFIG_PCIE1 |
| 697 | /* PEX1 stream ID fixup */ |
| 698 | count = FSL_PEX1_STREAM_ID_END - FSL_PEX1_STREAM_ID_START + 1; |
| 699 | alloc_stream_ids(FSL_PEX1_STREAM_ID_START, count, stream_ids, |
| 700 | MAX_STREAM_IDS); |
| 701 | pcie_set_available_streamids(blob, "/pcie@3400000", stream_ids, count); |
Varun Sethi | 6923b06 | 2015-07-29 00:03:47 +0530 | [diff] [blame] | 702 | append_mmu_masters(blob, "/iommu@5000000", "/pcie@3400000", |
| 703 | &ctlr_streamid, 1); |
Stuart Yoder | 70e52d2 | 2015-07-02 11:29:04 +0530 | [diff] [blame] | 704 | #endif |
| 705 | |
| 706 | #ifdef CONFIG_PCIE2 |
| 707 | /* PEX2 stream ID fixup */ |
| 708 | count = FSL_PEX2_STREAM_ID_END - FSL_PEX2_STREAM_ID_START + 1; |
| 709 | alloc_stream_ids(FSL_PEX2_STREAM_ID_START, count, stream_ids, |
| 710 | MAX_STREAM_IDS); |
| 711 | pcie_set_available_streamids(blob, "/pcie@3500000", stream_ids, count); |
Varun Sethi | 6923b06 | 2015-07-29 00:03:47 +0530 | [diff] [blame] | 712 | append_mmu_masters(blob, "/iommu@5000000", "/pcie@3500000", |
| 713 | &ctlr_streamid, 1); |
Stuart Yoder | 70e52d2 | 2015-07-02 11:29:04 +0530 | [diff] [blame] | 714 | #endif |
| 715 | |
| 716 | #ifdef CONFIG_PCIE3 |
| 717 | /* PEX3 stream ID fixup */ |
| 718 | count = FSL_PEX3_STREAM_ID_END - FSL_PEX3_STREAM_ID_START + 1; |
| 719 | alloc_stream_ids(FSL_PEX3_STREAM_ID_START, count, stream_ids, |
| 720 | MAX_STREAM_IDS); |
| 721 | pcie_set_available_streamids(blob, "/pcie@3600000", stream_ids, count); |
Varun Sethi | 6923b06 | 2015-07-29 00:03:47 +0530 | [diff] [blame] | 722 | append_mmu_masters(blob, "/iommu@5000000", "/pcie@3600000", |
| 723 | &ctlr_streamid, 1); |
Stuart Yoder | 70e52d2 | 2015-07-02 11:29:04 +0530 | [diff] [blame] | 724 | #endif |
| 725 | |
| 726 | #ifdef CONFIG_PCIE4 |
| 727 | /* PEX4 stream ID fixup */ |
| 728 | count = FSL_PEX4_STREAM_ID_END - FSL_PEX4_STREAM_ID_START + 1; |
| 729 | alloc_stream_ids(FSL_PEX4_STREAM_ID_START, count, stream_ids, |
| 730 | MAX_STREAM_IDS); |
| 731 | pcie_set_available_streamids(blob, "/pcie@3700000", stream_ids, count); |
Varun Sethi | 6923b06 | 2015-07-29 00:03:47 +0530 | [diff] [blame] | 732 | append_mmu_masters(blob, "/iommu@5000000", "/pcie@3700000", |
| 733 | &ctlr_streamid, 1); |
Stuart Yoder | 70e52d2 | 2015-07-02 11:29:04 +0530 | [diff] [blame] | 734 | #endif |
| 735 | } |
| 736 | #endif |