1135669Scognet/* $NetBSD: i80321_pci.c,v 1.4 2003/07/15 00:24:54 lukem Exp $ */ 2135669Scognet 3139735Simp/*- 4135669Scognet * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5135669Scognet * All rights reserved. 6135669Scognet * 7135669Scognet * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8135669Scognet * 9135669Scognet * Redistribution and use in source and binary forms, with or without 10135669Scognet * modification, are permitted provided that the following conditions 11135669Scognet * are met: 12135669Scognet * 1. Redistributions of source code must retain the above copyright 13135669Scognet * notice, this list of conditions and the following disclaimer. 14135669Scognet * 2. Redistributions in binary form must reproduce the above copyright 15135669Scognet * notice, this list of conditions and the following disclaimer in the 16135669Scognet * documentation and/or other materials provided with the distribution. 17135669Scognet * 3. All advertising materials mentioning features or use of this software 18135669Scognet * must display the following acknowledgement: 19135669Scognet * This product includes software developed for the NetBSD Project by 20135669Scognet * Wasabi Systems, Inc. 21135669Scognet * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22135669Scognet * or promote products derived from this software without specific prior 23135669Scognet * written permission. 24135669Scognet * 25135669Scognet * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26135669Scognet * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27135669Scognet * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28135669Scognet * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29135669Scognet * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30135669Scognet * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31135669Scognet * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32135669Scognet * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33135669Scognet * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34135669Scognet * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35135669Scognet * POSSIBILITY OF SUCH DAMAGE. 36135669Scognet */ 37135669Scognet 38135669Scognet/* 39135669Scognet * PCI configuration support for i80321 I/O Processor chip. 40135669Scognet */ 41135669Scognet 42135669Scognet#include <sys/cdefs.h> 43135669Scognet__FBSDID("$FreeBSD$"); 44135669Scognet 45135669Scognet#include <sys/param.h> 46135669Scognet#include <sys/systm.h> 47135669Scognet#include <sys/malloc.h> 48135669Scognet#include <sys/bus.h> 49135669Scognet#include <sys/kernel.h> 50135669Scognet#include <sys/module.h> 51135669Scognet#include <sys/rman.h> 52135669Scognet 53135669Scognet#include <machine/bus.h> 54135669Scognet#include <machine/cpu.h> 55135669Scognet#include <machine/pcb.h> 56135669Scognet#include <vm/vm.h> 57135669Scognet#include <vm/pmap.h> 58135669Scognet#include <vm/vm_extern.h> 59135669Scognet 60135669Scognet#include <arm/xscale/i80321/i80321reg.h> 61135669Scognet#include <arm/xscale/i80321/i80321var.h> 62135669Scognet#include <arm/xscale/i80321/i80321_intr.h> 63135669Scognet 64135669Scognet#include <dev/pci/pcib_private.h> 65135669Scognet#include "pcib_if.h" 66135669Scognet 67135669Scognet#include <dev/pci/pcireg.h> 68135669Scognetextern struct i80321_softc *i80321_softc; 69135669Scognet 70135669Scognetstatic int 71135669Scogneti80321_pci_probe(device_t dev) 72135669Scognet{ 73135669Scognet device_set_desc(dev, "i80321 PCI bus"); 74135669Scognet return (0); 75135669Scognet} 76135669Scognet 77135669Scognetstatic int 78135669Scogneti80321_pci_attach(device_t dev) 79135669Scognet{ 80135669Scognet 81236987Simp uint32_t busno; 82135669Scognet struct i80321_pci_softc *sc = device_get_softc(dev); 83135669Scognet 84135669Scognet sc->sc_st = i80321_softc->sc_st; 85135669Scognet sc->sc_atu_sh = i80321_softc->sc_atu_sh; 86135669Scognet busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR); 87135669Scognet busno = PCIXSR_BUSNO(busno); 88135669Scognet if (busno == 0xff) 89135669Scognet busno = 0; 90135669Scognet sc->sc_dev = dev; 91135669Scognet sc->sc_busno = busno; 92135669Scognet sc->sc_pciio = &i80321_softc->sc_pci_iot; 93135669Scognet sc->sc_pcimem = &i80321_softc->sc_pci_memt; 94135669Scognet sc->sc_mem = i80321_softc->sc_owin[0].owin_xlate_lo + 95135669Scognet VERDE_OUT_XLATE_MEM_WIN_SIZE; 96135669Scognet 97135669Scognet sc->sc_io = i80321_softc->sc_iow_vaddr; 98135669Scognet /* Initialize memory and i/o rmans. */ 99135669Scognet sc->sc_io_rman.rm_type = RMAN_ARRAY; 100135669Scognet sc->sc_io_rman.rm_descr = "I80321 PCI I/O Ports"; 101135669Scognet if (rman_init(&sc->sc_io_rman) != 0 || 102236987Simp rman_manage_region(&sc->sc_io_rman, 103236987Simp sc->sc_io, 104236987Simp sc->sc_io + 105135669Scognet VERDE_OUT_XLATE_IO_WIN_SIZE) != 0) { 106135669Scognet panic("i80321_pci_probe: failed to set up I/O rman"); 107135669Scognet } 108135669Scognet sc->sc_mem_rman.rm_type = RMAN_ARRAY; 109135669Scognet sc->sc_mem_rman.rm_descr = "I80321 PCI Memory"; 110135669Scognet if (rman_init(&sc->sc_mem_rman) != 0 || 111236987Simp rman_manage_region(&sc->sc_mem_rman, 112135669Scognet 0, VERDE_OUT_XLATE_MEM_WIN_SIZE) != 0) { 113135669Scognet panic("i80321_pci_probe: failed to set up memory rman"); 114135669Scognet } 115135669Scognet sc->sc_irq_rman.rm_type = RMAN_ARRAY; 116135669Scognet sc->sc_irq_rman.rm_descr = "i80321 PCI IRQs"; 117135669Scognet if (rman_init(&sc->sc_irq_rman) != 0 || 118135669Scognet rman_manage_region(&sc->sc_irq_rman, 26, 32) != 0) 119135669Scognet panic("i80321_pci_probe: failed to set up IRQ rman"); 120135669Scognet device_add_child(dev, "pci",busno); 121135669Scognet return (bus_generic_attach(dev)); 122135669Scognet} 123135669Scognet 124135669Scognetstatic int 125135669Scogneti80321_pci_maxslots(device_t dev) 126135669Scognet{ 127135669Scognet return (PCI_SLOTMAX); 128135669Scognet} 129135669Scognet 130135669Scognet 131135669Scognet 132135669Scognetstatic int 133135669Scogneti80321_pci_conf_setup(struct i80321_pci_softc *sc, int bus, int slot, int func, 134135669Scognet int reg, uint32_t *addr) 135135669Scognet{ 136135669Scognet uint32_t busno; 137135669Scognet 138135669Scognet busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR); 139135669Scognet busno = PCIXSR_BUSNO(busno); 140135669Scognet if (busno == 0xff) 141135669Scognet busno = 0; 142135669Scognet 143135669Scognet /* 144135669Scognet * If the bus # is the same as our own, then use Type 0 cycles, 145135669Scognet * else use Type 1. 146135669Scognet * 147135669Scognet * XXX We should filter out all non-private devices here! 148135669Scognet * XXX How does private space interact with PCI-PCI bridges? 149135669Scognet */ 150135669Scognet if (bus == busno) { 151135669Scognet if (slot > (31 - 16)) 152135669Scognet return (1); 153135669Scognet /* 154135669Scognet * NOTE: PCI-X requires that that devices updated their 155135669Scognet * PCIXSR on every config write with the device number 156135669Scognet * specified in AD[15:11]. If we don't set this field, 157135669Scognet * each device could end of thinking it is at device 0, 158135669Scognet * which can cause a number of problems. Doing this 159135669Scognet * unconditionally should be OK when only PCI devices 160135669Scognet * are present. 161135669Scognet */ 162135669Scognet bus &= 0xff; 163135669Scognet slot &= 0x1f; 164135669Scognet func &= 0x07; 165135669Scognet 166135669Scognet *addr = (1U << (slot + 16)) | 167135669Scognet (slot << 11) | (func << 8) | reg; 168135669Scognet } else { 169135669Scognet *addr = (bus << 16) | (slot << 11) | (func << 8) | reg | 1; 170135669Scognet } 171135669Scognet 172135669Scognet return (0); 173135669Scognet} 174135669Scognet 175135669Scognetstatic u_int32_t 176194015Savgi80321_pci_read_config(device_t dev, u_int bus, u_int slot, u_int func, 177194015Savg u_int reg, int bytes) 178135669Scognet{ 179135669Scognet struct i80321_pci_softc *sc = device_get_softc(dev); 180135669Scognet uint32_t isr; 181135669Scognet uint32_t addr; 182135669Scognet u_int32_t ret = 0; 183135669Scognet vm_offset_t va; 184135669Scognet int err = 0; 185135669Scognet if (i80321_pci_conf_setup(sc, bus, slot, func, reg & ~3, &addr)) 186135669Scognet return (-1); 187135669Scognet bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OCCAR, 188171629Scognet addr); 189135669Scognet 190135669Scognet va = sc->sc_atu_sh; 191135669Scognet switch (bytes) { 192135669Scognet case 1: 193135669Scognet err = badaddr_read((void*)(va + ATU_OCCDR + (reg & 3)), 1, &ret); 194135669Scognet break; 195135669Scognet case 2: 196135669Scognet err = badaddr_read((void*)(va + ATU_OCCDR + (reg & 3)), 2, &ret); 197135669Scognet break; 198135669Scognet case 4: 199135669Scognet err = badaddr_read((void *)(va + ATU_OCCDR), 4, &ret); 200135669Scognet break; 201135669Scognet default: 202171629Scognet printf("i80321_read_config: invalid size %d\n", bytes); 203135669Scognet ret = -1; 204135669Scognet } 205135669Scognet if (err) { 206135669Scognet 207135669Scognet isr = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_ATUISR); 208135669Scognet bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ATUISR, 209135669Scognet isr & (ATUISR_P_SERR_DET|ATUISR_PMA|ATUISR_PTAM| 210135669Scognet ATUISR_PTAT|ATUISR_PMPE)); 211135669Scognet return (-1); 212135669Scognet } 213135669Scognet return (ret); 214135669Scognet} 215135669Scognet 216135669Scognetstatic void 217194015Savgi80321_pci_write_config(device_t dev, u_int bus, u_int slot, u_int func, 218194015Savg u_int reg, u_int32_t data, int bytes) 219135669Scognet{ 220135669Scognet struct i80321_pci_softc *sc = device_get_softc(dev); 221135669Scognet uint32_t addr; 222135669Scognet 223139117Scognet if (i80321_pci_conf_setup(sc, bus, slot, func, reg & ~3, &addr)) 224135669Scognet return; 225135669Scognet 226135669Scognet 227135669Scognet bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OCCAR, 228135669Scognet addr); 229135669Scognet switch (bytes) { 230135669Scognet case 1: 231139117Scognet bus_space_write_1(sc->sc_st, sc->sc_atu_sh, ATU_OCCDR + 232139117Scognet (reg & 3), data); 233135669Scognet break; 234135669Scognet case 2: 235139117Scognet bus_space_write_2(sc->sc_st, sc->sc_atu_sh, ATU_OCCDR + 236139117Scognet (reg & 3), data); 237135669Scognet break; 238135669Scognet case 4: 239135669Scognet bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OCCDR, data); 240135669Scognet break; 241135669Scognet default: 242135669Scognet printf("i80321_pci_write_config: Invalid size : %d\n", bytes); 243135669Scognet } 244135669Scognet 245135669Scognet} 246135669Scognet 247135669Scognetstatic int 248135669Scogneti80321_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 249135669Scognet{ 250135669Scognet struct i80321_pci_softc *sc = device_get_softc(dev); 251135669Scognet switch (which) { 252172394Smarius case PCIB_IVAR_DOMAIN: 253172394Smarius *result = 0; 254172394Smarius return (0); 255135669Scognet case PCIB_IVAR_BUS: 256135669Scognet *result = sc->sc_busno; 257135669Scognet return (0); 258135669Scognet 259135669Scognet } 260135669Scognet return (ENOENT); 261135669Scognet} 262135669Scognet 263135669Scognetstatic int 264135669Scogneti80321_write_ivar(device_t dev, device_t child, int which, uintptr_t result) 265135669Scognet{ 266135669Scognet struct i80321_pci_softc * sc = device_get_softc(dev); 267135669Scognet 268135669Scognet switch (which) { 269172394Smarius case PCIB_IVAR_DOMAIN: 270172394Smarius return (EINVAL); 271135669Scognet case PCIB_IVAR_BUS: 272135669Scognet sc->sc_busno = result; 273135669Scognet return (0); 274135669Scognet } 275135669Scognet return (ENOENT); 276135669Scognet} 277135669Scognet 278135669Scognetstatic struct resource * 279135669Scogneti80321_pci_alloc_resource(device_t bus, device_t child, int type, int *rid, 280135669Scognet u_long start, u_long end, u_long count, u_int flags) 281135669Scognet{ 282135669Scognet struct i80321_pci_softc *sc = device_get_softc(bus); 283135669Scognet struct resource *rv; 284135669Scognet struct rman *rm; 285135669Scognet bus_space_tag_t bt = NULL; 286135669Scognet bus_space_handle_t bh = 0; 287135669Scognet 288135669Scognet switch (type) { 289135669Scognet case SYS_RES_IRQ: 290150552Scognet rm = &sc->sc_irq_rman; 291135669Scognet break; 292135669Scognet case SYS_RES_MEMORY: 293135669Scognet rm = &sc->sc_mem_rman; 294135669Scognet bt = sc->sc_pcimem; 295139117Scognet bh = (start >= 0x80000000 && start < 0x84000000) ? 0x80000000 : 296139117Scognet sc->sc_mem; 297139117Scognet start &= (0x1000000 - 1); 298139117Scognet end &= (0x1000000 - 1); 299135669Scognet break; 300135669Scognet case SYS_RES_IOPORT: 301135669Scognet rm = &sc->sc_io_rman; 302135669Scognet bt = sc->sc_pciio; 303135669Scognet bh = sc->sc_io; 304154712Scognet if (start < sc->sc_io) { 305154712Scognet start = start - 0x90000000 + sc->sc_io; 306154712Scognet end = end - 0x90000000 + sc->sc_io; 307154712Scognet } 308135669Scognet break; 309135669Scognet default: 310135669Scognet return (NULL); 311135669Scognet } 312135669Scognet 313135669Scognet rv = rman_reserve_resource(rm, start, end, count, flags, child); 314154712Scognet if (rv == NULL) 315135669Scognet return (NULL); 316157891Simp rman_set_rid(rv, *rid); 317135669Scognet if (type != SYS_RES_IRQ) { 318157726Scognet if (type == SYS_RES_MEMORY) 319157726Scognet bh += (rman_get_start(rv)); 320135669Scognet rman_set_bustag(rv, bt); 321135669Scognet rman_set_bushandle(rv, bh); 322135669Scognet if (flags & RF_ACTIVE) { 323135669Scognet if (bus_activate_resource(child, type, *rid, rv)) { 324135669Scognet rman_release_resource(rv); 325135669Scognet return (NULL); 326135669Scognet } 327236987Simp } 328135669Scognet } 329135669Scognet return (rv); 330135669Scognet} 331135669Scognet 332135669Scognetstatic int 333135669Scogneti80321_pci_activate_resource(device_t bus, device_t child, int type, int rid, 334135669Scognet struct resource *r) 335135669Scognet{ 336135669Scognet u_long p; 337135669Scognet int error; 338135669Scognet 339135669Scognet if (type == SYS_RES_MEMORY) { 340135669Scognet error = bus_space_map(rman_get_bustag(r), 341135669Scognet rman_get_bushandle(r), rman_get_size(r), 0, &p); 342236987Simp if (error) 343135669Scognet return (error); 344135669Scognet rman_set_bushandle(r, p); 345135669Scognet 346135669Scognet } 347135669Scognet return (rman_activate_resource(r)); 348135669Scognet} 349135669Scognet 350135669Scognetstatic int 351135669Scogneti80321_pci_setup_intr(device_t dev, device_t child, 352236987Simp struct resource *ires, int flags, driver_filter_t *filt, 353236987Simp driver_intr_t *intr, void *arg, void **cookiep) 354135669Scognet{ 355135669Scognet return (BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, 356166901Spiso filt, intr, arg, cookiep)); 357135669Scognet} 358147166Scognet 359147166Scognetstatic int 360147166Scogneti80321_pci_teardown_intr(device_t dev, device_t child, struct resource *res, 361147166Scognet void *cookie) 362147166Scognet{ 363147166Scognet return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie)); 364147166Scognet} 365147166Scognet 366135669Scognetstatic device_method_t i80321_pci_methods[] = { 367135669Scognet /* Device interface */ 368135669Scognet DEVMETHOD(device_probe, i80321_pci_probe), 369135669Scognet DEVMETHOD(device_attach, i80321_pci_attach), 370135669Scognet DEVMETHOD(device_shutdown, bus_generic_shutdown), 371135669Scognet DEVMETHOD(device_suspend, bus_generic_suspend), 372135669Scognet DEVMETHOD(device_resume, bus_generic_resume), 373135669Scognet 374135669Scognet /* Bus interface */ 375135669Scognet DEVMETHOD(bus_read_ivar, i80321_read_ivar), 376135669Scognet DEVMETHOD(bus_write_ivar, i80321_write_ivar), 377135669Scognet DEVMETHOD(bus_alloc_resource, i80321_pci_alloc_resource), 378135669Scognet DEVMETHOD(bus_release_resource, bus_generic_release_resource), 379135669Scognet DEVMETHOD(bus_activate_resource, i80321_pci_activate_resource), 380135669Scognet DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 381135669Scognet DEVMETHOD(bus_setup_intr, i80321_pci_setup_intr), 382147166Scognet DEVMETHOD(bus_teardown_intr, i80321_pci_teardown_intr), 383135669Scognet 384135669Scognet /* pcib interface */ 385135669Scognet DEVMETHOD(pcib_maxslots, i80321_pci_maxslots), 386135669Scognet DEVMETHOD(pcib_read_config, i80321_pci_read_config), 387135669Scognet DEVMETHOD(pcib_write_config, i80321_pci_write_config), 388161592Scognet DEVMETHOD(pcib_route_interrupt, machdep_pci_route_interrupt), 389135669Scognet 390227843Smarius DEVMETHOD_END 391135669Scognet}; 392135669Scognet 393135669Scognetstatic driver_t i80321_pci_driver = { 394135669Scognet "pcib", 395135669Scognet i80321_pci_methods, 396135669Scognet sizeof(struct i80321_pci_softc), 397135669Scognet}; 398135669Scognet 399135669Scognetstatic devclass_t i80321_pci_devclass; 400135669Scognet 401135669ScognetDRIVER_MODULE(ipci, iq, i80321_pci_driver, i80321_pci_devclass, 0, 0); 402