ixp425.c revision 166064
1164426Ssam/* $NetBSD: ixp425.c,v 1.10 2005/12/11 12:16:51 christos Exp $ */ 2164426Ssam 3164426Ssam/* 4164426Ssam * Copyright (c) 2003 5164426Ssam * Ichiro FUKUHARA <ichiro@ichiro.org>. 6164426Ssam * All rights reserved. 7164426Ssam * 8164426Ssam * Redistribution and use in source and binary forms, with or without 9164426Ssam * modification, are permitted provided that the following conditions 10164426Ssam * are met: 11164426Ssam * 1. Redistributions of source code must retain the above copyright 12164426Ssam * notice, this list of conditions and the following disclaimer. 13164426Ssam * 2. Redistributions in binary form must reproduce the above copyright 14164426Ssam * notice, this list of conditions and the following disclaimer in the 15164426Ssam * documentation and/or other materials provided with the distribution. 16164426Ssam * 3. All advertising materials mentioning features or use of this software 17164426Ssam * must display the following acknowledgement: 18164426Ssam * This product includes software developed by Ichiro FUKUHARA. 19164426Ssam * 4. The name of the company nor the name of the author may be used to 20164426Ssam * endorse or promote products derived from this software without specific 21164426Ssam * prior written permission. 22164426Ssam * 23164426Ssam * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR 24164426Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25164426Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26164426Ssam * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR 27164426Ssam * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28164426Ssam * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29164426Ssam * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30164426Ssam * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31164426Ssam * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32164426Ssam * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33164426Ssam * SUCH DAMAGE. 34164426Ssam */ 35164426Ssam 36164426Ssam#include <sys/cdefs.h> 37164426Ssam__FBSDID("$FreeBSD: head/sys/arm/xscale/ixp425/ixp425.c 166064 2007-01-17 00:58:25Z cognet $"); 38164426Ssam 39164426Ssam#define _ARM32_BUS_DMA_PRIVATE 40164426Ssam#include <sys/param.h> 41164426Ssam#include <sys/systm.h> 42164426Ssam#include <sys/bus.h> 43164426Ssam#include <sys/kernel.h> 44164426Ssam#include <sys/module.h> 45164426Ssam#include <sys/malloc.h> 46164426Ssam#include <sys/rman.h> 47164426Ssam#include <machine/bus.h> 48164426Ssam#include <machine/intr.h> 49164426Ssam 50164426Ssam#include <vm/vm.h> 51164426Ssam#include <vm/pmap.h> 52164426Ssam#include <arm/xscale/ixp425/ixp425reg.h> 53164426Ssam#include <arm/xscale/ixp425/ixp425var.h> 54164426Ssam#include <arm/xscale/ixp425/ixp425_intr.h> 55164426Ssam 56164426Ssam#include <dev/pci/pcireg.h> 57164426Ssam 58164426Ssamvolatile uint32_t intr_enabled; 59164426Ssamuint32_t intr_steer = 0; 60164426Ssam 61164426Ssamstruct ixp425_softc *ixp425_softc = NULL; 62164426Ssam 63164426Ssamstatic int ixp425_probe(device_t); 64164426Ssamstatic void ixp425_identify(driver_t *, device_t); 65164426Ssamstatic int ixp425_attach(device_t); 66164426Ssam 67164426Ssamstatic struct { 68164426Ssam uint32_t hwbase; 69164426Ssam uint32_t size; 70164426Ssam uint32_t vbase; 71164426Ssam} hwvtrans[] = { 72164426Ssam { IXP425_IO_HWBASE, IXP425_IO_SIZE, IXP425_IO_VBASE }, 73164426Ssam { IXP425_EXP_HWBASE, IXP425_EXP_SIZE, IXP425_EXP_VBASE }, 74164426Ssam { IXP425_PCI_HWBASE, IXP425_PCI_SIZE, IXP425_PCI_VBASE }, 75164426Ssam { IXP425_PCI_MEM_HWBASE,IXP425_PCI_MEM_SIZE, IXP425_PCI_MEM_VBASE }, 76164426Ssam#if 0 77164426Ssam { IXP425_PCI_IO_HWBASE, IXP425_PCI_IO_SIZE, IXP425_PCI_IO_VBASE }, 78164426Ssam#endif 79164426Ssam { IXP425_MCU_HWBASE, IXP425_MCU_SIZE, IXP425_MCU_VBASE }, 80164426Ssam { IXP425_QMGR_HWBASE, IXP425_QMGR_SIZE, IXP425_QMGR_VBASE }, 81164426Ssam { IXP425_NPE_A_HWBASE, IXP425_NPE_A_SIZE, IXP425_NPE_A_VBASE }, 82164426Ssam { IXP425_NPE_B_HWBASE, IXP425_NPE_B_SIZE, IXP425_NPE_B_VBASE }, 83164426Ssam { IXP425_NPE_C_HWBASE, IXP425_NPE_C_SIZE, IXP425_NPE_C_VBASE }, 84164426Ssam { IXP425_MAC_A_HWBASE, IXP425_MAC_A_SIZE, IXP425_MAC_A_VBASE }, 85164426Ssam { IXP425_MAC_B_HWBASE, IXP425_MAC_B_SIZE, IXP425_MAC_B_VBASE }, 86164426Ssam /* Gateworks Avila IDE/CF is mapped here */ 87164426Ssam { IXP425_EXP_BUS_CS1_HWBASE, IXP425_EXP_BUS_SIZE, 88164426Ssam IXP425_EXP_BUS_CS1_VBASE }, 89164426Ssam}; 90164426Ssam 91164426Ssamstatic int 92164426Ssamgetvbase(uint32_t hwbase, uint32_t size, uint32_t *vbase) 93164426Ssam{ 94164426Ssam int i; 95164426Ssam 96164426Ssam for (i = 0; i < sizeof hwvtrans / sizeof *hwvtrans; i++) { 97164426Ssam if (hwbase >= hwvtrans[i].hwbase && 98164426Ssam hwbase + size <= hwvtrans[i].hwbase + hwvtrans[i].size) { 99164426Ssam *vbase = hwbase - hwvtrans[i].hwbase + hwvtrans[i].vbase; 100164426Ssam return (0); 101164426Ssam } 102164426Ssam } 103164426Ssam 104164426Ssam return (ENOENT); 105164426Ssam} 106164426Ssam 107164426Ssamstruct arm32_dma_range * 108164426Ssambus_dma_get_range(void) 109164426Ssam{ 110164426Ssam return (NULL); 111164426Ssam} 112164426Ssam 113164426Ssamint 114164426Ssambus_dma_get_range_nb(void) 115164426Ssam{ 116164426Ssam return (0); 117164426Ssam} 118164426Ssam 119164426Ssamstatic __inline u_int32_t 120164426Ssamixp425_irq2gpio_bit(int irq) 121164426Ssam{ 122164426Ssam 123164426Ssam static const uint8_t int2gpio[32] __attribute__ ((aligned(32))) = { 124164426Ssam 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* INT#0 -> INT#5 */ 125164426Ssam 0x00, 0x01, /* GPIO#0 -> GPIO#1 */ 126164426Ssam 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* INT#8 -> INT#13 */ 127164426Ssam 0xff, 0xff, 0xff, 0xff, 0xff, /* INT#14 -> INT#18 */ 128164426Ssam 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* GPIO#2 -> GPIO#7 */ 129164426Ssam 0x08, 0x09, 0x0a, 0x0b, 0x0c, /* GPIO#8 -> GPIO#12 */ 130164426Ssam 0xff, 0xff /* INT#30 -> INT#31 */ 131164426Ssam }; 132164426Ssam 133164426Ssam return (1U << int2gpio[irq]); 134164426Ssam} 135164426Ssam 136164426Ssamvoid 137164426Ssamarm_mask_irq(uintptr_t nb) 138164426Ssam{ 139164426Ssam intr_enabled &= ~(1 << nb); 140164426Ssam ixp425_set_intrmask(); 141164426Ssam /*XXX; If it's a GPIO interrupt, ACK it know. Can it be a problem ?*/ 142164426Ssam if ((1 << nb) & IXP425_INT_GPIOMASK) 143164426Ssam IXPREG(IXP425_GPIO_VBASE + IXP425_GPIO_GPISR) = 144164426Ssam ixp425_irq2gpio_bit(nb); 145164426Ssam 146164426Ssam 147164426Ssam} 148164426Ssam 149164426Ssamvoid 150164426Ssamarm_unmask_irq(uintptr_t nb) 151164426Ssam{ 152166064Scognet 153164426Ssam intr_enabled |= (1 << nb); 154164426Ssam ixp425_set_intrmask(); 155164426Ssam} 156164426Ssam 157164426Ssamstatic __inline uint32_t 158164426Ssamixp425_irq_read(void) 159164426Ssam{ 160164426Ssam return IXPREG(IXP425_INT_STATUS) & intr_enabled; 161164426Ssam} 162164426Ssam 163164426Ssamint 164164426Ssamarm_get_next_irq(void) 165164426Ssam{ 166164426Ssam int irq; 167164426Ssam 168164426Ssam if ((irq = ixp425_irq_read())) 169164426Ssam return (ffs(irq) - 1); 170164426Ssam return (-1); 171164426Ssam} 172164426Ssam 173164426Ssamvoid 174164426Ssamcpu_reset(void) 175164426Ssam{ 176164426Ssam 177164426Ssam bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE, 178164426Ssam IXP425_OST_WDOG_KEY, OST_WDOG_KEY_MAJICK); 179164426Ssam bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE, 180164426Ssam IXP425_OST_WDOG, 0); 181164426Ssam bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE, 182164426Ssam IXP425_OST_WDOG_ENAB, OST_WDOG_ENAB_RST_ENA | 183164426Ssam OST_WDOG_ENAB_CNT_ENA); 184164426Ssam printf("Reset failed!\n"); 185164426Ssam for(;;); 186164426Ssam} 187164426Ssam 188164426Ssamstatic void 189164426Ssamixp425_identify(driver_t *driver, device_t parent) 190164426Ssam{ 191164426Ssam BUS_ADD_CHILD(parent, 0, "ixp", 0); 192164426Ssam} 193164426Ssam 194164426Ssamstatic int 195164426Ssamixp425_probe(device_t dev) 196164426Ssam{ 197164426Ssam device_set_desc(dev, "Intel IXP425"); 198164426Ssam return (0); 199164426Ssam} 200164426Ssam 201164426Ssamstatic int 202164426Ssamixp425_attach(device_t dev) 203164426Ssam{ 204164426Ssam struct ixp425_softc *sc; 205164426Ssam 206164426Ssam sc = device_get_softc(dev); 207164426Ssam sc->sc_iot = &ixp425_bs_tag; 208164426Ssam KASSERT(ixp425_softc == NULL, ("ixp425_attach called twice?")); 209164426Ssam ixp425_softc = sc; 210164426Ssam 211164426Ssam intr_enabled = 0; 212164426Ssam ixp425_set_intrmask(); 213164426Ssam ixp425_set_intrsteer(); 214164426Ssam 215166064Scognet if (bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 216166064Scognet BUS_SPACE_MAXADDR, NULL, NULL, 0xffffffff, 0xff, 0xffffffff, 0, 217166064Scognet NULL, NULL, &sc->sc_dmat)) 218166064Scognet panic("couldn't create the IXP425 dma tag !"); 219166064Scognet 220164426Ssam sc->sc_irq_rman.rm_type = RMAN_ARRAY; 221164426Ssam sc->sc_irq_rman.rm_descr = "IXP425 IRQs"; 222164426Ssam if (rman_init(&sc->sc_irq_rman) != 0 || 223164426Ssam rman_manage_region(&sc->sc_irq_rman, 0, 31) != 0) 224164426Ssam panic("ixp425_attach: failed to set up IRQ rman"); 225164426Ssam 226164426Ssam sc->sc_mem_rman.rm_type = RMAN_ARRAY; 227164426Ssam sc->sc_mem_rman.rm_descr = "IXP425 Memory"; 228164426Ssam if (rman_init(&sc->sc_mem_rman) != 0 || 229164426Ssam rman_manage_region(&sc->sc_mem_rman, 0, ~0) != 0) 230164426Ssam panic("ixp425_attach: failed to set up IRQ rman"); 231164426Ssam 232164426Ssam device_add_child(dev, "pcib", 0); 233164426Ssam device_add_child(dev, "ixpclk", 0); 234164426Ssam device_add_child(dev, "ixpwdog", 0); 235164426Ssam device_add_child(dev, "ixpiic", 0); 236164426Ssam device_add_child(dev, "uart", 0); 237164426Ssam /* XXX these are optional, what if they are not configured? */ 238164426Ssam device_add_child(dev, "ixpqmgr", 0); 239164426Ssam device_add_child(dev, "npe", 0); /* NPE-B */ 240164426Ssam device_add_child(dev, "npe", 1); /* NPE-C */ 241164426Ssam device_add_child(dev, "ata_avila", 0); /* XXX */ 242164508Skevlo device_add_child(dev, "led_avila", 0); 243164426Ssam 244164426Ssam if (bus_space_map(sc->sc_iot, IXP425_GPIO_HWBASE, IXP425_GPIO_SIZE, 245164426Ssam 0, &sc->sc_gpio_ioh)) 246164426Ssam panic("ixp425_attach: unable to map GPIO registers"); 247164426Ssam if (bus_space_map(sc->sc_iot, IXP425_EXP_HWBASE, IXP425_EXP_SIZE, 248164426Ssam 0, &sc->sc_exp_ioh)) 249164426Ssam panic("ixp425_attach: unable to map Expansion Bus registers"); 250164426Ssam 251164426Ssam bus_generic_probe(dev); 252164426Ssam bus_generic_attach(dev); 253164426Ssam 254164426Ssam return (0); 255164426Ssam} 256164426Ssam 257164426Ssamstatic struct resource * 258164426Ssamixp425_alloc_resource(device_t dev, device_t child, int type, int *rid, 259164426Ssam u_long start, u_long end, u_long count, u_int flags) 260164426Ssam{ 261164426Ssam struct ixp425_softc *sc = device_get_softc(dev); 262164426Ssam struct rman *rmanp; 263164426Ssam struct resource *rv; 264164426Ssam uint32_t vbase; 265164426Ssam int isuart = (start == 0 && end == ~0); /* XXX how to do this right? */ 266164426Ssam 267164426Ssam rv = NULL; 268164426Ssam 269164426Ssam switch (type) { 270164426Ssam case SYS_RES_IRQ: 271164426Ssam rmanp = &sc->sc_irq_rman; 272164426Ssam if (isuart) { 273164426Ssam if (device_get_unit(dev) == 0) 274164426Ssam start = IXP425_INT_UART0; 275164426Ssam else 276164426Ssam start = IXP425_INT_UART1; 277164426Ssam end = start; 278164426Ssam } 279164426Ssam break; 280164426Ssam 281164426Ssam case SYS_RES_MEMORY: 282164426Ssam rmanp = &sc->sc_mem_rman; 283164426Ssam if (isuart) { 284164426Ssam if (device_get_unit(dev) == 0) 285164426Ssam start = IXP425_UART0_HWBASE; 286164426Ssam else 287164426Ssam start = IXP425_UART1_HWBASE; 288164426Ssam end = start + 0x1000; 289164426Ssam } 290164426Ssam if (getvbase(start, end - start, &vbase)) 291164426Ssam return (rv); 292164426Ssam break; 293164426Ssam 294164426Ssam default: 295164426Ssam return (rv); 296164426Ssam } 297164426Ssam 298164426Ssam rv = rman_reserve_resource(rmanp, start, end, count, flags, child); 299164426Ssam if (rv != NULL) { 300164426Ssam rman_set_rid(rv, *rid); 301164426Ssam if (type == SYS_RES_MEMORY) { 302164426Ssam rman_set_bustag(rv, 303164426Ssam isuart ? &ixp425_a4x_bs_tag : sc->sc_iot); 304164426Ssam rman_set_bushandle(rv, vbase); 305164426Ssam } 306164426Ssam } 307164426Ssam 308164426Ssam return (rv); 309164426Ssam} 310164426Ssam 311164426Ssamstatic int 312164426Ssamixp425_setup_intr(device_t dev, device_t child, 313164426Ssam struct resource *ires, int flags, driver_intr_t *intr, void *arg, 314164426Ssam void **cookiep) 315164426Ssam{ 316164426Ssam uint32_t mask; 317164426Ssam int i; 318164426Ssam 319164426Ssam if (flags & INTR_TYPE_TTY) { 320164426Ssam /* XXX: wrong. */ 321164426Ssam if (device_get_unit(dev) == 0) 322164426Ssam rman_set_start(ires, IXP425_INT_UART0); 323164426Ssam else 324164426Ssam rman_set_start(ires, IXP425_INT_UART1); 325164426Ssam rman_set_end(ires, rman_get_start(ires)); 326164426Ssam } 327164426Ssam BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, intr, arg, 328164426Ssam cookiep); 329164426Ssam 330164426Ssam mask = 0; 331164426Ssam for (i = rman_get_start(ires); i <= rman_get_end(ires); i++) 332164426Ssam mask |= 1 << i; 333164426Ssam intr_enabled |= mask; 334164426Ssam ixp425_set_intrmask(); 335164426Ssam 336164426Ssam return (0); 337164426Ssam} 338164426Ssam 339164426Ssamstatic int 340164426Ssamixp425_teardown_intr(device_t dev, device_t child, struct resource *res, 341164426Ssam void *cookie) 342164426Ssam{ 343164426Ssam uint32_t mask; 344164426Ssam int i; 345164426Ssam 346164426Ssam mask = 0; 347164426Ssam for (i = rman_get_start(res); i <= rman_get_end(res); i++) 348164426Ssam mask |= 1 << i; 349164426Ssam intr_enabled &= ~mask; 350164426Ssam ixp425_set_intrmask(); 351164426Ssam 352164426Ssam return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie)); 353164426Ssam} 354164426Ssam 355164426Ssamstatic device_method_t ixp425_methods[] = { 356164426Ssam /* Device interface */ 357164426Ssam DEVMETHOD(device_probe, ixp425_probe), 358164426Ssam DEVMETHOD(device_attach, ixp425_attach), 359164426Ssam DEVMETHOD(device_identify, ixp425_identify), 360164426Ssam 361164426Ssam /* Bus interface */ 362164426Ssam DEVMETHOD(bus_alloc_resource, ixp425_alloc_resource), 363164426Ssam DEVMETHOD(bus_setup_intr, ixp425_setup_intr), 364164426Ssam DEVMETHOD(bus_teardown_intr, ixp425_teardown_intr), 365164426Ssam 366164426Ssam {0, 0}, 367164426Ssam}; 368164426Ssam 369164426Ssamstatic driver_t ixp425_driver = { 370164426Ssam "ixp", 371164426Ssam ixp425_methods, 372164426Ssam sizeof(struct ixp425_softc), 373164426Ssam}; 374164426Ssamstatic devclass_t ixp425_devclass; 375164426Ssam 376164426SsamDRIVER_MODULE(ixp, nexus, ixp425_driver, ixp425_devclass, 0, 0); 377