2 * Copyright (c) 2006 Olivier Houchard
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
16 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24 * POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
35 #include <sys/types.h>
38 #include <machine/bus.h>
39 #include <machine/cpu.h>
40 #include <machine/pcb.h>
43 #include <vm/vm_extern.h>
44 #include <machine/pmap.h>
46 #include <arm/xscale/i8134x/i81342reg.h>
47 #include <arm/xscale/i8134x/i81342var.h>
49 #include <dev/pci/pcivar.h>
50 #include <dev/pci/pcib_private.h>
53 #include <dev/pci/pcireg.h>
55 static pcib_read_config_t i81342_pci_read_config;
56 static pcib_write_config_t i81342_pci_write_config;
59 i81342_pci_probe(device_t dev)
61 struct i81342_pci_softc *sc;
63 sc = device_get_softc(dev);
64 if (device_get_unit(dev) == 0) {
65 device_set_desc(dev, "i81342 PCI-X bus");
68 device_set_desc(dev, "i81342 PCIe bus");
74 #define PCI_MAPREG_MEM_PREFETCHABLE_MASK 0x00000008
75 #define PCI_MAPREG_MEM_TYPE_64BIT 0x00000004
78 i81342_pci_attach(device_t dev)
80 struct i81342_softc *parent_sc;
81 struct i81342_pci_softc *sc;
82 uint32_t memsize, memstart;
87 sc = device_get_softc(dev);
88 parent_sc = device_get_softc(device_get_parent(dev));
89 sc->sc_atu_sh = sc->sc_is_atux ? parent_sc->sc_atux_sh :
90 parent_sc->sc_atue_sh;
91 sc->sc_st = parent_sc->sc_st;
92 if (bus_space_read_4(sc->sc_st, parent_sc->sc_sh, IOP34X_ESSTSR0)
93 & IOP34X_INT_SEL_PCIX) {
104 i81342_io_bs_init(&sc->sc_pciio, sc);
105 i81342_mem_bs_init(&sc->sc_pcimem, sc);
106 i81342_sdram_bounds(sc->sc_st, IOP34X_VADDR, &memstart, &memsize);
107 if (sc->sc_is_atux) {
108 reg = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCSR);
109 if (reg & ATUX_P_RSTOUT) {
110 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_PCSR,
111 reg &~ ATUX_P_RSTOUT);
115 /* Setup the Inbound windows. */
116 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IABAR0, 0);
117 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IAUBAR0, 0);
118 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IALR0, 0);
120 /* Set the mapping Physical address <=> PCI address */
121 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IABAR1,
122 memstart | PCI_MAPREG_MEM_PREFETCHABLE_MASK |
123 PCI_MAPREG_MEM_TYPE_64BIT);
124 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IAUBAR1, 0);
125 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IALR1, ~(memsize - 1)
127 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IATVR1, memstart);
128 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IAUTVR1, 0);
130 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IABAR2, 0);
131 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IAUBAR2, 0);
132 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IALR2, 0);
134 /* Setup the Outbound IO Bar */
136 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OIOBAR,
137 (IOP34X_PCIX_OIOBAR >> 4) | func);
139 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OIOBAR,
140 (IOP34X_PCIE_OIOBAR >> 4) | func);
142 /* Setup the Outbound windows */
143 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMBAR0, 0);
145 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMBAR1,
146 (IOP34X_PCIX_OMBAR >> 32) | (func << ATU_OUMBAR_FUNC) |
149 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMBAR1,
150 (IOP34X_PCIE_OMBAR >> 32) | (func << ATU_OUMBAR_FUNC) |
152 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMWTVR1, 0);
153 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMBAR2, 0);
154 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMBAR3, 0);
156 /* Enable the outbound windows. */
157 reg = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_CR);
158 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_CR,
159 reg | ATU_CR_OUT_EN);
161 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR,
162 bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR) & ATUX_ISR_ERRMSK);
164 * Enable bus mastering, memory access, SERR, and parity
165 * checking on the ATU.
167 if (sc->sc_is_atux) {
168 busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
169 busno = PCIXSR_BUSNO(busno);
171 busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCSR);
172 busno = PCIE_BUSNO(busno);
174 reg = bus_space_read_2(sc->sc_st, sc->sc_atu_sh, ATU_CMD);
175 reg |= PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN | PCIM_CMD_PERRESPEN |
177 bus_space_write_2(sc->sc_st, sc->sc_atu_sh, ATU_CMD, reg);
178 sc->sc_busno = busno;
179 /* Initialize memory and i/o rmans. */
180 sc->sc_io_rman.rm_type = RMAN_ARRAY;
181 sc->sc_io_rman.rm_descr = "I81342 PCI I/O Ports";
182 if (rman_init(&sc->sc_io_rman) != 0 ||
183 rman_manage_region(&sc->sc_io_rman,
184 sc->sc_is_atux ? IOP34X_PCIX_OIOBAR_VADDR :
185 IOP34X_PCIE_OIOBAR_VADDR,
186 (sc->sc_is_atux ? IOP34X_PCIX_OIOBAR_VADDR :
187 IOP34X_PCIE_OIOBAR_VADDR) + IOP34X_OIOBAR_SIZE) != 0) {
188 panic("i81342_pci_probe: failed to set up I/O rman");
190 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
191 sc->sc_mem_rman.rm_descr = "I81342 PCI Memory";
192 if (rman_init(&sc->sc_mem_rman) != 0 ||
193 rman_manage_region(&sc->sc_mem_rman,
194 0, 0xffffffff) != 0) {
195 panic("i81342_pci_attach: failed to set up memory rman");
197 sc->sc_irq_rman.rm_type = RMAN_ARRAY;
198 sc->sc_irq_rman.rm_descr = "i81342 PCI IRQs";
199 if (sc->sc_is_atux) {
200 if (rman_init(&sc->sc_irq_rman) != 0 ||
201 rman_manage_region(&sc->sc_irq_rman, ICU_INT_XINT0,
203 panic("i83142_pci_attach: failed to set up IRQ rman");
205 if (rman_init(&sc->sc_irq_rman) != 0 ||
206 rman_manage_region(&sc->sc_irq_rman, ICU_INT_ATUE_MA,
207 ICU_INT_ATUE_MD) != 0)
208 panic("i81342_pci_attach: failed to set up IRQ rman");
211 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR,
212 bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR) & ATUX_ISR_ERRMSK);
213 device_add_child(dev, "pci", busno);
214 return (bus_generic_attach(dev));
218 i81342_pci_maxslots(device_t dev)
221 return (PCI_SLOTMAX);
225 i81342_pci_conf_setup(struct i81342_pci_softc *sc, int bus, int slot, int func,
226 int reg, uint32_t *addr)
230 if (sc->sc_is_atux) {
231 busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
232 busno = PCIXSR_BUSNO(busno);
234 busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCSR);
235 busno = PCIE_BUSNO(busno);
240 if (sc->sc_is_atux) {
242 *addr = (1 << (slot + 16)) | (slot << 11) |
245 *addr = (bus << 16) | (slot << 11) | (func << 11) |
248 *addr = (bus << 24) | (slot << 19) | (func << 16) | reg;
255 i81342_pci_read_config(device_t dev, u_int bus, u_int slot, u_int func,
256 u_int reg, int bytes)
258 struct i81342_pci_softc *sc = device_get_softc(dev);
265 i81342_pci_conf_setup(sc, bus, slot, func, reg & ~3, &addr);
266 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, sc->sc_is_atux ?
267 ATUX_OCCAR : ATUE_OCCAR, addr);
269 va = sc->sc_atu_sh + ATUX_OCCDR;
271 va = sc->sc_atu_sh + ATUE_OCCDR;
274 err = badaddr_read((void*)(va + (reg & 3)), 1, &ret);
277 err = badaddr_read((void*)(va + (reg & 3)), 2, &ret);
280 err = badaddr_read((void *)(va) , 4, &ret);
283 printf("i81342_read_config: invalid size %d\n", bytes);
287 isr = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR);
289 isr &= ATUX_ISR_ERRMSK;
291 isr &= ATUE_ISR_ERRMSK;
292 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR, isr);
300 i81342_pci_write_config(device_t dev, u_int bus, u_int slot, u_int func,
301 u_int reg, u_int32_t data, int bytes)
303 struct i81342_pci_softc *sc = device_get_softc(dev);
307 i81342_pci_conf_setup(sc, bus, slot, func, reg & ~3, &addr);
308 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, sc->sc_is_atux ?
309 ATUX_OCCAR : ATUE_OCCAR, addr);
310 va = sc->sc_is_atux ? ATUX_OCCDR : ATUE_OCCDR;
313 bus_space_write_1(sc->sc_st, sc->sc_atu_sh, va + (reg & 3)
317 bus_space_write_2(sc->sc_st, sc->sc_atu_sh, va + (reg & 3)
321 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, va, data);
324 printf("i81342_pci_write_config: Invalid size : %d\n", bytes);
330 static struct resource *
331 i81342_pci_alloc_resource(device_t bus, device_t child, int type, int *rid,
332 u_long start, u_long end, u_long count, u_int flags)
334 struct i81342_pci_softc *sc = device_get_softc(bus);
337 bus_space_tag_t bt = NULL;
338 bus_space_handle_t bh = 0;
342 rm = &sc->sc_irq_rman;
345 rm = &sc->sc_mem_rman;
350 rm = &sc->sc_io_rman;
352 bh = sc->sc_is_atux ? IOP34X_PCIX_OIOBAR_VADDR :
353 IOP34X_PCIE_OIOBAR_VADDR;
361 rv = rman_reserve_resource(rm, start, end, count, flags, child);
364 rman_set_rid(rv, *rid);
365 if (type != SYS_RES_IRQ) {
366 if (type == SYS_RES_MEMORY)
367 bh += (rman_get_start(rv));
368 rman_set_bustag(rv, bt);
369 rman_set_bushandle(rv, bh);
370 if (flags & RF_ACTIVE) {
371 if (bus_activate_resource(child, type, *rid, rv)) {
372 rman_release_resource(rv);
384 i81342_pci_activate_resource(device_t bus, device_t child, int type, int rid,
390 if (type == SYS_RES_MEMORY) {
391 error = bus_space_map(rman_get_bustag(r),
392 rman_get_bushandle(r), rman_get_size(r), 0, &p);
395 rman_set_bushandle(r, p);
398 return (rman_activate_resource(r));
402 i81342_pci_setup_intr(device_t dev, device_t child, struct resource *ires,
403 int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg,
407 return (BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags,
408 filt, intr, arg, cookiep));
414 i81342_pci_teardown_intr(device_t dev, device_t child, struct resource *res,
417 return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
421 i81342_pci_route_interrupt(device_t pcib, device_t dev, int pin)
423 struct i81342_pci_softc *sc;
426 device = pci_get_slot(dev);
427 sc = device_get_softc(pcib);
428 /* XXX: Is board specific */
429 if (sc->sc_is_atux) {
435 return (ICU_INT_XINT1);
437 return (ICU_INT_XINT2);
439 return (ICU_INT_XINT3);
441 return (ICU_INT_XINT0);
448 return (ICU_INT_XINT2);
450 return (ICU_INT_XINT3);
452 return (ICU_INT_XINT2);
454 return (ICU_INT_XINT3);
463 return (ICU_INT_ATUE_MA);
465 return (ICU_INT_ATUE_MB);
467 return (ICU_INT_ATUE_MC);
469 return (ICU_INT_ATUE_MD);
474 printf("Warning: couldn't map %s IRQ for device %d pin %d\n",
475 sc->sc_is_atux ? "PCI-X" : "PCIe", device, pin);
480 i81342_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
482 struct i81342_pci_softc *sc = device_get_softc(dev);
484 case PCIB_IVAR_DOMAIN:
488 *result = sc->sc_busno;
496 i81342_write_ivar(device_t dev, device_t child, int which, uintptr_t result)
498 struct i81342_pci_softc * sc = device_get_softc(dev);
501 case PCIB_IVAR_DOMAIN:
504 sc->sc_busno = result;
510 static device_method_t i81342_pci_methods[] = {
511 /* Device interface */
512 DEVMETHOD(device_probe, i81342_pci_probe),
513 DEVMETHOD(device_attach, i81342_pci_attach),
514 DEVMETHOD(device_shutdown, bus_generic_shutdown),
515 DEVMETHOD(device_suspend, bus_generic_suspend),
516 DEVMETHOD(device_resume, bus_generic_resume),
519 DEVMETHOD(bus_read_ivar, i81342_read_ivar),
520 DEVMETHOD(bus_write_ivar, i81342_write_ivar),
521 DEVMETHOD(bus_alloc_resource, i81342_pci_alloc_resource),
522 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
523 DEVMETHOD(bus_activate_resource, i81342_pci_activate_resource),
524 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
525 DEVMETHOD(bus_setup_intr, i81342_pci_setup_intr),
526 DEVMETHOD(bus_teardown_intr, i81342_pci_teardown_intr),
529 DEVMETHOD(pcib_maxslots, i81342_pci_maxslots),
530 DEVMETHOD(pcib_read_config, i81342_pci_read_config),
531 DEVMETHOD(pcib_write_config, i81342_pci_write_config),
532 DEVMETHOD(pcib_route_interrupt, i81342_pci_route_interrupt),
537 static driver_t i81342_pci_driver = {
540 sizeof(struct i81342_pci_softc),
543 static devclass_t i81342_pci_devclass;
545 DRIVER_MODULE(ipci, iq, i81342_pci_driver, i81342_pci_devclass, 0, 0);