ixp12x0.c revision 1.7
1 /* $NetBSD: ixp12x0.c,v 1.7 2003/03/25 06:12:46 igy Exp $ */ 2 /* 3 * Copyright (c) 2002, 2003 4 * Ichiro FUKUHARA <ichiro (at) ichiro.org>. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Ichiro FUKUHARA. 18 * 4. The name of the company nor the name of the author may be used to 19 * endorse or promote products derived from this software without specific 20 * prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR 26 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: ixp12x0.c,v 1.7 2003/03/25 06:12:46 igy Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 #include <uvm/uvm.h> 42 43 #include <machine/bus.h> 44 45 #include <arm/ixp12x0/ixp12x0reg.h> 46 #include <arm/ixp12x0/ixp12x0var.h> 47 #include <arm/ixp12x0/ixp12x0_pcireg.h> 48 49 int ixp12x0_pcibus_print(void *, const char *); 50 51 static struct ixp12x0_softc *ixp12x0_softc; 52 53 void 54 ixp12x0_attach(sc) 55 struct ixp12x0_softc *sc; 56 { 57 struct pcibus_attach_args pba; 58 pcireg_t reg; 59 60 ixp12x0_softc = sc; 61 62 printf("\n"); 63 /* 64 * Subregion for PCI Configuration Spase Registers 65 */ 66 if (bus_space_subregion(sc->sc_iot, sc->sc_ioh, 67 IXP12X0_PCI_VBASE - IXP12X0_IO_VBASE, 68 IXP12X0_PCI_SIZE, &sc->sc_pci_ioh)) 69 panic("%s: unable to subregion PCI registers", 70 sc->sc_dev.dv_xname); 71 72 if (bus_space_subregion(sc->sc_iot, sc->sc_ioh, 73 IXP12X0_PCI_TYPE0_VBASE - IXP12X0_IO_VBASE, 74 IXP12X0_PCI_TYPE0_SIZE, &sc->sc_conf0_ioh)) 75 panic("%s: unable to subregion PCI Configutation 0\n", 76 sc->sc_dev.dv_xname); 77 78 if (bus_space_subregion(sc->sc_iot, sc->sc_ioh, 79 IXP12X0_PCI_TYPE1_VBASE - IXP12X0_IO_VBASE, 80 IXP12X0_PCI_TYPE1_SIZE, &sc->sc_conf1_ioh)) 81 panic("%s: unable to subregion PCI Configutation 1\n", 82 sc->sc_dev.dv_xname); 83 /* 84 * PCI bus reset 85 */ 86 /* disable PCI command */ 87 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, 88 PCI_COMMAND_STATUS_REG, 0xffff0000); 89 /* XXX assert PCI reset Mode */ 90 reg = bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, 91 SA_CONTROL) &~ SA_CONTROL_PNR; 92 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, 93 SA_CONTROL, reg); 94 DELAY(10); 95 96 /* XXX Disable door bell and outbound interrupt */ 97 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, 98 PCI_CAP_PTR, 0xc); 99 /* Disable door bell int to PCI */ 100 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, 101 DBELL_PCI_MASK, 0x0); 102 /* Disable door bell int to SA-core */ 103 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, 104 DBELL_SA_MASK, 0x0); 105 106 /* We setup a 1:1 memory map of bus<->physical addresses */ 107 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, 108 PCI_ADDR_EXT, 109 PCI_ADDR_EXT_PMSA(IXP12X0_PCI_MEM_HWBASE)); 110 111 /* XXX Negate PCI reset */ 112 reg = bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, 113 SA_CONTROL) | SA_CONTROL_PNR; 114 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, 115 SA_CONTROL, reg); 116 DELAY(10); 117 /* 118 * specify window size of memory access and SDRAM. 119 */ 120 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, IXP_PCI_MEM_BAR, 121 IXP1200_PCI_MEM_BAR & IXP_PCI_MEM_BAR_MASK); 122 123 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, IXP_PCI_IO_BAR, 124 IXP1200_PCI_IO_BAR & IXP_PCI_IO_BAR_MASK); 125 126 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, IXP_PCI_DRAM_BAR, 127 IXP1200_PCI_DRAM_BAR & IXP_PCI_DRAM_BAR_MASK); 128 129 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, 130 CSR_BASE_ADDR_MASK, CSR_BASE_ADDR_MASK_1M); 131 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, 132 DRAM_BASE_ADDR_MASK, DRAM_BASE_ADDR_MASK_256MB); 133 134 #ifdef PCI_DEBUG 135 printf("IXP_PCI_MEM_BAR = 0x%08x\nIXP_PCI_IO_BAR = 0x%08x\nIXP_PCI_DRAM_BAR = 0x%08x\nPCI_ADDR_EXT = 0x%08x\nCSR_BASE_ADDR_MASK = 0x%08x\nDRAM_BASE_ADDR_MASK = 0x%08x\n", 136 bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, IXP_PCI_MEM_BAR), 137 bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, IXP_PCI_IO_BAR), 138 bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, IXP_PCI_DRAM_BAR), 139 bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, PCI_ADDR_EXT), 140 bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, CSR_BASE_ADDR_MASK), 141 bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, DRAM_BASE_ADDR_MASK)); 142 #endif 143 /* Initialize complete */ 144 reg = bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, 145 SA_CONTROL) | 0x1; 146 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, 147 SA_CONTROL, reg); 148 #if DEBUG 149 printf("SA_CONTROL = 0x%08x\n", 150 bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, SA_CONTROL)); 151 #endif 152 /* 153 * Enable bus mastering and I/O,memory access 154 */ 155 /* host only */ 156 reg = bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, 157 PCI_COMMAND_STATUS_REG) | 158 PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE | 159 PCI_COMMAND_PARITY_ENABLE | PCI_COMMAND_SERR_ENABLE | 160 PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_INVALIDATE_ENABLE; 161 bus_space_write_4(sc->sc_iot, sc->sc_pci_ioh, 162 PCI_COMMAND_STATUS_REG, reg); 163 #ifdef PCI_DEBUG 164 printf("PCI_COMMAND_STATUS_REG = 0x%08x\n", 165 bus_space_read_4(sc->sc_iot, sc->sc_pci_ioh, PCI_COMMAND_STATUS_REG)); 166 #endif 167 /* 168 * Initialize the bus space and DMA tags and the PCI chipset tag. 169 */ 170 ixp12x0_io_bs_init(&sc->ia_pci_iot, sc); 171 ixp12x0_mem_bs_init(&sc->ia_pci_memt, sc); 172 ixp12x0_pci_init(&sc->ia_pci_chipset, sc); 173 174 /* 175 * Initialize the DMA tags. 176 */ 177 ixp12x0_pci_dma_init(sc); 178 179 /* 180 * Attach the PCI bus. 181 */ 182 pba.pba_busname = "pci"; 183 pba.pba_pc = &sc->ia_pci_chipset; 184 pba.pba_iot = &sc->ia_pci_iot; 185 pba.pba_memt = &sc->ia_pci_memt; 186 pba.pba_dmat = &sc->ia_pci_dmat; 187 pba.pba_bus = 0; /* bus number = 0 */ 188 pba.pba_intrswiz = 0; /* XXX */ 189 pba.pba_intrtag = 0; 190 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | 191 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY; 192 (void) config_found(&sc->sc_dev, &pba, ixp12x0_pcibus_print); 193 } 194 195 int 196 ixp12x0_pcibus_print(void *aux, const char *pnp) 197 { 198 struct pcibus_attach_args *pba = aux; 199 200 if (pnp) 201 aprint_normal("%s at %s", pba->pba_busname, pnp); 202 203 aprint_normal(" bus %d", pba->pba_bus); 204 205 return (UNCONF); 206 } 207 208 /* 209 * IXP12x0 specific I/O registers mapping table 210 */ 211 static struct pmap_ent map_tbl_ixp12x0[] = { 212 { "StrongARM System and Peripheral Registers", 213 IXP12X0_SYS_VBASE, IXP12X0_SYS_HWBASE, 214 IXP12X0_SYS_SIZE, 215 VM_PROT_READ|VM_PROT_WRITE, 216 PTE_NOCACHE, }, 217 218 { "PCI Registers Accessible Through StrongARM Core", 219 IXP12X0_PCI_VBASE, IXP12X0_PCI_HWBASE, 220 IXP12X0_PCI_SIZE, 221 VM_PROT_READ|VM_PROT_WRITE, 222 PTE_NOCACHE, }, 223 224 { "PCI Registers Accessible Through I/O Cycle Access", 225 IXP12X0_PCI_IO_VBASE, IXP12X0_PCI_IO_HWBASE, 226 IXP12X0_PCI_IO_SIZE, 227 VM_PROT_READ|VM_PROT_WRITE, 228 PTE_NOCACHE, }, 229 230 { "PCI Registers Accessible Through Memory Cycle Access", 231 IXP12X0_PCI_MEM_VBASE, IXP12X0_PCI_MEM_HWBASE, 232 IXP12X0_PCI_MEM_SIZE, 233 VM_PROT_READ|VM_PROT_WRITE, 234 PTE_NOCACHE, }, 235 236 { "PCI Type0 Configuration Space", 237 IXP12X0_PCI_TYPE0_VBASE, IXP12X0_PCI_TYPE0_HWBASE, 238 IXP12X0_PCI_TYPE0_SIZE, 239 VM_PROT_READ|VM_PROT_WRITE, 240 PTE_NOCACHE, }, 241 242 { "PCI Type1 Configuration Space", 243 IXP12X0_PCI_TYPE1_VBASE, IXP12X0_PCI_TYPE1_HWBASE, 244 IXP12X0_PCI_TYPE1_SIZE, 245 VM_PROT_READ|VM_PROT_WRITE, 246 PTE_NOCACHE, }, 247 248 { NULL, 0, 0, 0, 0, 0 }, 249 }; 250 251 /* 252 * mapping virtual memories 253 */ 254 void 255 ixp12x0_pmap_chunk_table(vaddr_t l1pt, struct pmap_ent* m) 256 { 257 int loop; 258 259 loop = 0; 260 while (m[loop].msg) { 261 printf("mapping %s...\n", m[loop].msg); 262 pmap_map_chunk(l1pt, m[loop].va, m[loop].pa, 263 m[loop].sz, m[loop].prot, m[loop].cache); 264 ++loop; 265 } 266 } 267 268 /* 269 * mapping I/O registers 270 */ 271 void 272 ixp12x0_pmap_io_reg(vaddr_t l1pt) 273 { 274 ixp12x0_pmap_chunk_table(l1pt, map_tbl_ixp12x0); 275 } 276 277 void 278 ixp12x0_reset(void) 279 { 280 bus_space_write_4(ixp12x0_softc->sc_iot, ixp12x0_softc->sc_pci_ioh, 281 IXPPCI_IXP1200_RESET, RESET_FULL); 282 } 283
Indexes created Tue Sep 30 17:09:57 GMT 2025