2 * Copyright (c) 2008 MARVELL INTERNATIONAL LTD.
3 * Copyright (c) 2010 The FreeBSD Foundation
4 * Copyright (c) 2010-2012 Semihalf
7 * Developed by Semihalf.
9 * Portions of this software were developed by Semihalf
10 * under sponsorship from the FreeBSD Foundation.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of MARVELL nor the names of contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * Marvell integrated PCI/PCI-Express controller driver.
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/kernel.h>
48 #include <sys/malloc.h>
49 #include <sys/module.h>
50 #include <sys/mutex.h>
51 #include <sys/queue.h>
54 #include <sys/endian.h>
56 #include <machine/fdt.h>
57 #include <machine/intr.h>
62 #include <dev/fdt/fdt_common.h>
63 #include <dev/ofw/ofw_bus.h>
64 #include <dev/ofw/ofw_pci.h>
65 #include <dev/ofw/ofw_bus_subr.h>
66 #include <dev/pci/pcivar.h>
67 #include <dev/pci/pcireg.h>
68 #include <dev/pci/pcib_private.h>
70 #include "ofw_bus_if.h"
73 #include <machine/devmap.h>
74 #include <machine/resource.h>
75 #include <machine/bus.h>
77 #include <arm/mv/mvreg.h>
78 #include <arm/mv/mvvar.h>
79 #include <arm/mv/mvwin.h>
82 #define debugf(fmt, args...) do { printf(fmt,##args); } while (0)
84 #define debugf(fmt, args...)
88 * Code and data related to fdt-based PCI configuration.
90 * This stuff used to be in dev/fdt/fdt_pci.c and fdt_common.h, but it was
91 * always Marvell-specific so that was deleted and the code now lives here.
100 #define FDT_RANGES_CELLS ((3 + 3 + 2) * 2)
103 mv_pci_range_dump(struct mv_pci_range *range)
107 printf(" base_pci = 0x%08lx\n", range->base_pci);
108 printf(" base_par = 0x%08lx\n", range->base_parent);
109 printf(" len = 0x%08lx\n", range->len);
114 mv_pci_ranges_decode(phandle_t node, struct mv_pci_range *io_space,
115 struct mv_pci_range *mem_space)
117 pcell_t ranges[FDT_RANGES_CELLS];
118 struct mv_pci_range *pci_space;
119 pcell_t addr_cells, size_cells, par_addr_cells;
121 pcell_t cell0, cell1, cell2;
122 int tuple_size, tuples, i, rv, offset_cells, len;
125 * Retrieve 'ranges' property.
127 if ((fdt_addrsize_cells(node, &addr_cells, &size_cells)) != 0)
129 if (addr_cells != 3 || size_cells != 2)
132 par_addr_cells = fdt_parent_addr_cells(node);
133 if (par_addr_cells > 3)
136 len = OF_getproplen(node, "ranges");
137 if (len > sizeof(ranges))
140 if (OF_getprop(node, "ranges", ranges, sizeof(ranges)) <= 0)
143 tuple_size = sizeof(pcell_t) * (addr_cells + par_addr_cells +
145 tuples = len / tuple_size;
148 * Initialize the ranges so that we don't have to worry about
149 * having them all defined in the FDT. In particular, it is
150 * perfectly fine not to want I/O space on PCI busses.
152 bzero(io_space, sizeof(*io_space));
153 bzero(mem_space, sizeof(*mem_space));
155 rangesptr = &ranges[0];
157 for (i = 0; i < tuples; i++) {
158 cell0 = fdt_data_get((void *)rangesptr, 1);
160 cell1 = fdt_data_get((void *)rangesptr, 1);
162 cell2 = fdt_data_get((void *)rangesptr, 1);
165 if (cell0 & 0x02000000) {
166 pci_space = mem_space;
167 } else if (cell0 & 0x01000000) {
168 pci_space = io_space;
174 if (par_addr_cells == 3) {
176 * This is a PCI subnode 'ranges'. Skip cell0 and
177 * cell1 of this entry and only use cell2.
180 rangesptr += offset_cells;
183 if ((par_addr_cells - offset_cells) > 2) {
187 pci_space->base_parent = fdt_data_get((void *)rangesptr,
188 par_addr_cells - offset_cells);
189 rangesptr += par_addr_cells - offset_cells;
191 if (size_cells > 2) {
195 pci_space->len = fdt_data_get((void *)rangesptr, size_cells);
196 rangesptr += size_cells;
198 pci_space->base_pci = cell2;
206 mv_pci_ranges(phandle_t node, struct mv_pci_range *io_space,
207 struct mv_pci_range *mem_space)
211 debugf("Processing PCI node: %x\n", node);
212 if ((err = mv_pci_ranges_decode(node, io_space, mem_space)) != 0) {
213 debugf("could not decode parent PCI node 'ranges'\n");
217 debugf("Post fixup dump:\n");
218 mv_pci_range_dump(io_space);
219 mv_pci_range_dump(mem_space);
224 mv_pci_devmap(phandle_t node, struct arm_devmap_entry *devmap, vm_offset_t io_va,
227 struct mv_pci_range io_space, mem_space;
230 if ((error = mv_pci_ranges_decode(node, &io_space, &mem_space)) != 0)
233 devmap->pd_va = (io_va ? io_va : io_space.base_parent);
234 devmap->pd_pa = io_space.base_parent;
235 devmap->pd_size = io_space.len;
236 devmap->pd_prot = VM_PROT_READ | VM_PROT_WRITE;
237 devmap->pd_cache = PTE_DEVICE;
240 devmap->pd_va = (mem_va ? mem_va : mem_space.base_parent);
241 devmap->pd_pa = mem_space.base_parent;
242 devmap->pd_size = mem_space.len;
243 devmap->pd_prot = VM_PROT_READ | VM_PROT_WRITE;
244 devmap->pd_cache = PTE_DEVICE;
249 * Code and data related to the Marvell pcib driver.
252 #define PCI_CFG_ENA (1U << 31)
253 #define PCI_CFG_BUS(bus) (((bus) & 0xff) << 16)
254 #define PCI_CFG_DEV(dev) (((dev) & 0x1f) << 11)
255 #define PCI_CFG_FUN(fun) (((fun) & 0x7) << 8)
256 #define PCI_CFG_PCIE_REG(reg) ((reg) & 0xfc)
258 #define PCI_REG_CFG_ADDR 0x0C78
259 #define PCI_REG_CFG_DATA 0x0C7C
261 #define PCIE_REG_CFG_ADDR 0x18F8
262 #define PCIE_REG_CFG_DATA 0x18FC
263 #define PCIE_REG_CONTROL 0x1A00
264 #define PCIE_CTRL_LINK1X 0x00000001
265 #define PCIE_REG_STATUS 0x1A04
266 #define PCIE_REG_IRQ_MASK 0x1910
268 #define PCIE_CONTROL_ROOT_CMPLX (1 << 1)
269 #define PCIE_CONTROL_HOT_RESET (1 << 24)
271 #define PCIE_LINK_TIMEOUT 1000000
273 #define PCIE_STATUS_LINK_DOWN 1
274 #define PCIE_STATUS_DEV_OFFS 16
276 /* Minimum PCI Memory and I/O allocations taken from PCI spec (in bytes) */
277 #define PCI_MIN_IO_ALLOC 4
278 #define PCI_MIN_MEM_ALLOC 16
280 #define BITS_PER_UINT32 (NBBY * sizeof(uint32_t))
282 struct mv_pcib_softc {
285 struct rman sc_mem_rman;
286 bus_addr_t sc_mem_base;
287 bus_addr_t sc_mem_size;
288 uint32_t sc_mem_map[MV_PCI_MEM_SLICE_SIZE /
289 (PCI_MIN_MEM_ALLOC * BITS_PER_UINT32)];
293 struct rman sc_io_rman;
294 bus_addr_t sc_io_base;
295 bus_addr_t sc_io_size;
296 uint32_t sc_io_map[MV_PCI_IO_SLICE_SIZE /
297 (PCI_MIN_IO_ALLOC * BITS_PER_UINT32)];
300 struct resource *sc_res;
301 bus_space_handle_t sc_bsh;
302 bus_space_tag_t sc_bst;
305 struct mtx sc_msi_mtx;
306 uint32_t sc_msi_bitmap;
308 int sc_busnr; /* Host bridge bus number */
309 int sc_devnr; /* Host bridge device number */
311 int sc_mode; /* Endpoint / Root Complex */
313 struct ofw_bus_iinfo sc_pci_iinfo;
316 /* Local forward prototypes */
317 static int mv_pcib_decode_win(phandle_t, struct mv_pcib_softc *);
318 static void mv_pcib_hw_cfginit(void);
319 static uint32_t mv_pcib_hw_cfgread(struct mv_pcib_softc *, u_int, u_int,
321 static void mv_pcib_hw_cfgwrite(struct mv_pcib_softc *, u_int, u_int,
322 u_int, u_int, uint32_t, int);
323 static int mv_pcib_init(struct mv_pcib_softc *, int, int);
324 static int mv_pcib_init_all_bars(struct mv_pcib_softc *, int, int, int, int);
325 static void mv_pcib_init_bridge(struct mv_pcib_softc *, int, int, int);
326 static inline void pcib_write_irq_mask(struct mv_pcib_softc *, uint32_t);
327 static void mv_pcib_enable(struct mv_pcib_softc *, uint32_t);
328 static int mv_pcib_mem_init(struct mv_pcib_softc *);
330 /* Forward prototypes */
331 static int mv_pcib_probe(device_t);
332 static int mv_pcib_attach(device_t);
334 static struct resource *mv_pcib_alloc_resource(device_t, device_t, int, int *,
335 u_long, u_long, u_long, u_int);
336 static int mv_pcib_release_resource(device_t, device_t, int, int,
338 static int mv_pcib_read_ivar(device_t, device_t, int, uintptr_t *);
339 static int mv_pcib_write_ivar(device_t, device_t, int, uintptr_t);
341 static int mv_pcib_maxslots(device_t);
342 static uint32_t mv_pcib_read_config(device_t, u_int, u_int, u_int, u_int, int);
343 static void mv_pcib_write_config(device_t, u_int, u_int, u_int, u_int,
345 static int mv_pcib_route_interrupt(device_t, device_t, int);
346 #if defined(SOC_MV_ARMADAXP)
347 static int mv_pcib_alloc_msi(device_t, device_t, int, int, int *);
348 static int mv_pcib_map_msi(device_t, device_t, int, uint64_t *, uint32_t *);
349 static int mv_pcib_release_msi(device_t, device_t, int, int *);
353 * Bus interface definitions.
355 static device_method_t mv_pcib_methods[] = {
356 /* Device interface */
357 DEVMETHOD(device_probe, mv_pcib_probe),
358 DEVMETHOD(device_attach, mv_pcib_attach),
361 DEVMETHOD(bus_read_ivar, mv_pcib_read_ivar),
362 DEVMETHOD(bus_write_ivar, mv_pcib_write_ivar),
363 DEVMETHOD(bus_alloc_resource, mv_pcib_alloc_resource),
364 DEVMETHOD(bus_release_resource, mv_pcib_release_resource),
365 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
366 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
367 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
368 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
371 DEVMETHOD(pcib_maxslots, mv_pcib_maxslots),
372 DEVMETHOD(pcib_read_config, mv_pcib_read_config),
373 DEVMETHOD(pcib_write_config, mv_pcib_write_config),
374 DEVMETHOD(pcib_route_interrupt, mv_pcib_route_interrupt),
376 #if defined(SOC_MV_ARMADAXP)
377 DEVMETHOD(pcib_alloc_msi, mv_pcib_alloc_msi),
378 DEVMETHOD(pcib_release_msi, mv_pcib_release_msi),
379 DEVMETHOD(pcib_map_msi, mv_pcib_map_msi),
382 /* OFW bus interface */
383 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
384 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
385 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
386 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
387 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
392 static driver_t mv_pcib_driver = {
395 sizeof(struct mv_pcib_softc),
398 devclass_t pcib_devclass;
400 DRIVER_MODULE(pcib, ofwbus, mv_pcib_driver, pcib_devclass, 0, 0);
402 static struct mtx pcicfg_mtx;
405 mv_pcib_probe(device_t self)
409 node = ofw_bus_get_node(self);
410 if (!fdt_is_type(node, "pci"))
413 if (!(ofw_bus_is_compatible(self, "mrvl,pcie") ||
414 ofw_bus_is_compatible(self, "mrvl,pci")))
417 device_set_desc(self, "Marvell Integrated PCI/PCI-E Controller");
418 return (BUS_PROBE_DEFAULT);
422 mv_pcib_attach(device_t self)
424 struct mv_pcib_softc *sc;
425 phandle_t node, parnode;
429 sc = device_get_softc(self);
431 unit = fdt_get_unit(self);
434 node = ofw_bus_get_node(self);
435 parnode = OF_parent(node);
436 if (fdt_is_compatible(node, "mrvl,pcie")) {
437 sc->sc_type = MV_TYPE_PCIE;
438 sc->sc_win_target = MV_WIN_PCIE_TARGET(unit);
439 sc->sc_mem_win_attr = MV_WIN_PCIE_MEM_ATTR(unit);
440 sc->sc_io_win_attr = MV_WIN_PCIE_IO_ATTR(unit);
441 } else if (fdt_is_compatible(node, "mrvl,pci")) {
442 sc->sc_type = MV_TYPE_PCI;
443 sc->sc_win_target = MV_WIN_PCI_TARGET;
444 sc->sc_mem_win_attr = MV_WIN_PCI_MEM_ATTR;
445 sc->sc_io_win_attr = MV_WIN_PCI_IO_ATTR;
450 * Retrieve our mem-mapped registers range.
453 sc->sc_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &sc->sc_rid,
455 if (sc->sc_res == NULL) {
456 device_printf(self, "could not map memory\n");
459 sc->sc_bst = rman_get_bustag(sc->sc_res);
460 sc->sc_bsh = rman_get_bushandle(sc->sc_res);
462 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, PCIE_REG_CONTROL);
463 sc->sc_mode = (val & PCIE_CONTROL_ROOT_CMPLX ? MV_MODE_ROOT :
467 * Get PCI interrupt info.
469 if (sc->sc_mode == MV_MODE_ROOT)
470 ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(pcell_t));
473 * Configure decode windows for PCI(E) access.
475 if (mv_pcib_decode_win(node, sc) != 0)
478 mv_pcib_hw_cfginit();
481 * Enable PCIE device.
483 mv_pcib_enable(sc, unit);
488 err = mv_pcib_mem_init(sc);
492 if (sc->sc_mode == MV_MODE_ROOT) {
493 err = mv_pcib_init(sc, sc->sc_busnr,
494 mv_pcib_maxslots(sc->sc_dev));
498 device_add_child(self, "pci", -1);
501 bus_space_write_4(sc->sc_bst, sc->sc_bsh,
502 PCIE_REG_STATUS, 1 << PCIE_STATUS_DEV_OFFS);
503 device_add_child(self, "pci_ep", -1);
506 mtx_init(&sc->sc_msi_mtx, "msi_mtx", NULL, MTX_DEF);
507 return (bus_generic_attach(self));
510 /* XXX SYS_RES_ should be released here */
511 rman_fini(&sc->sc_mem_rman);
512 rman_fini(&sc->sc_io_rman);
518 mv_pcib_enable(struct mv_pcib_softc *sc, uint32_t unit)
521 #if !defined(SOC_MV_ARMADAXP)
525 * Check if PCIE device is enabled.
527 if (read_cpu_ctrl(CPU_CONTROL) & CPU_CONTROL_PCIE_DISABLE(unit)) {
528 write_cpu_ctrl(CPU_CONTROL, read_cpu_ctrl(CPU_CONTROL) &
529 ~(CPU_CONTROL_PCIE_DISABLE(unit)));
531 timeout = PCIE_LINK_TIMEOUT;
532 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh,
534 while (((val & PCIE_STATUS_LINK_DOWN) == 1) && (timeout > 0)) {
537 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh,
544 if (sc->sc_mode == MV_MODE_ROOT) {
548 val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, PCIR_COMMAND);
549 val |= PCIM_CMD_SERRESPEN | PCIM_CMD_BUSMASTEREN |
550 PCIM_CMD_MEMEN | PCIM_CMD_PORTEN;
551 bus_space_write_4(sc->sc_bst, sc->sc_bsh, PCIR_COMMAND, val);
556 mv_pcib_mem_init(struct mv_pcib_softc *sc)
563 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
564 err = rman_init(&sc->sc_mem_rman);
568 sc->sc_io_rman.rm_type = RMAN_ARRAY;
569 err = rman_init(&sc->sc_io_rman);
571 rman_fini(&sc->sc_mem_rman);
575 err = rman_manage_region(&sc->sc_mem_rman, sc->sc_mem_base,
576 sc->sc_mem_base + sc->sc_mem_size - 1);
580 err = rman_manage_region(&sc->sc_io_rman, sc->sc_io_base,
581 sc->sc_io_base + sc->sc_io_size - 1);
588 rman_fini(&sc->sc_mem_rman);
589 rman_fini(&sc->sc_io_rman);
594 static inline uint32_t
595 pcib_bit_get(uint32_t *map, uint32_t bit)
597 uint32_t n = bit / BITS_PER_UINT32;
599 bit = bit % BITS_PER_UINT32;
600 return (map[n] & (1 << bit));
604 pcib_bit_set(uint32_t *map, uint32_t bit)
606 uint32_t n = bit / BITS_PER_UINT32;
608 bit = bit % BITS_PER_UINT32;
609 map[n] |= (1 << bit);
612 static inline uint32_t
613 pcib_map_check(uint32_t *map, uint32_t start, uint32_t bits)
617 for (i = start; i < start + bits; i++)
618 if (pcib_bit_get(map, i))
625 pcib_map_set(uint32_t *map, uint32_t start, uint32_t bits)
629 for (i = start; i < start + bits; i++)
630 pcib_bit_set(map, i);
634 * The idea of this allocator is taken from ARM No-Cache memory
635 * management code (sys/arm/arm/vm_machdep.c).
638 pcib_alloc(struct mv_pcib_softc *sc, uint32_t smask)
640 uint32_t bits, bits_limit, i, *map, min_alloc, size;
645 base = sc->sc_io_base;
646 min_alloc = PCI_MIN_IO_ALLOC;
647 bits_limit = sc->sc_io_size / min_alloc;
651 base = sc->sc_mem_base;
652 min_alloc = PCI_MIN_MEM_ALLOC;
653 bits_limit = sc->sc_mem_size / min_alloc;
654 map = sc->sc_mem_map;
659 bits = size / min_alloc;
661 for (i = 0; i + bits <= bits_limit; i += bits)
662 if (pcib_map_check(map, i, bits)) {
663 pcib_map_set(map, i, bits);
664 addr = base + (i * min_alloc);
672 mv_pcib_init_bar(struct mv_pcib_softc *sc, int bus, int slot, int func,
678 reg = PCIR_BAR(barno);
681 * Need to init the BAR register with 0xffffffff before correct
684 mv_pcib_write_config(sc->sc_dev, bus, slot, func, reg, ~0, 4);
685 bar = mv_pcib_read_config(sc->sc_dev, bus, slot, func, reg, 4);
689 /* Calculate BAR size: 64 or 32 bit (in 32-bit units) */
690 width = ((bar & 7) == 4) ? 2 : 1;
692 addr = pcib_alloc(sc, bar);
697 printf("PCI %u:%u:%u: reg %x: smask=%08x: addr=%08x\n",
698 bus, slot, func, reg, bar, addr);
700 mv_pcib_write_config(sc->sc_dev, bus, slot, func, reg, addr, 4);
702 mv_pcib_write_config(sc->sc_dev, bus, slot, func, reg + 4,
709 mv_pcib_init_bridge(struct mv_pcib_softc *sc, int bus, int slot, int func)
711 bus_addr_t io_base, mem_base;
712 uint32_t io_limit, mem_limit;
715 io_base = sc->sc_io_base;
716 io_limit = io_base + sc->sc_io_size - 1;
717 mem_base = sc->sc_mem_base;
718 mem_limit = mem_base + sc->sc_mem_size - 1;
720 /* Configure I/O decode registers */
721 mv_pcib_write_config(sc->sc_dev, bus, slot, func, PCIR_IOBASEL_1,
723 mv_pcib_write_config(sc->sc_dev, bus, slot, func, PCIR_IOBASEH_1,
725 mv_pcib_write_config(sc->sc_dev, bus, slot, func, PCIR_IOLIMITL_1,
727 mv_pcib_write_config(sc->sc_dev, bus, slot, func, PCIR_IOLIMITH_1,
730 /* Configure memory decode registers */
731 mv_pcib_write_config(sc->sc_dev, bus, slot, func, PCIR_MEMBASE_1,
733 mv_pcib_write_config(sc->sc_dev, bus, slot, func, PCIR_MEMLIMIT_1,
736 /* Disable memory prefetch decode */
737 mv_pcib_write_config(sc->sc_dev, bus, slot, func, PCIR_PMBASEL_1,
739 mv_pcib_write_config(sc->sc_dev, bus, slot, func, PCIR_PMBASEH_1,
741 mv_pcib_write_config(sc->sc_dev, bus, slot, func, PCIR_PMLIMITL_1,
743 mv_pcib_write_config(sc->sc_dev, bus, slot, func, PCIR_PMLIMITH_1,
746 secbus = mv_pcib_read_config(sc->sc_dev, bus, slot, func,
749 /* Configure buses behind the bridge */
750 mv_pcib_init(sc, secbus, PCI_SLOTMAX);
754 mv_pcib_init(struct mv_pcib_softc *sc, int bus, int maxslot)
756 int slot, func, maxfunc, error;
757 uint8_t hdrtype, command, class, subclass;
759 for (slot = 0; slot <= maxslot; slot++) {
761 for (func = 0; func <= maxfunc; func++) {
762 hdrtype = mv_pcib_read_config(sc->sc_dev, bus, slot,
763 func, PCIR_HDRTYPE, 1);
765 if ((hdrtype & PCIM_HDRTYPE) > PCI_MAXHDRTYPE)
768 if (func == 0 && (hdrtype & PCIM_MFDEV))
769 maxfunc = PCI_FUNCMAX;
771 command = mv_pcib_read_config(sc->sc_dev, bus, slot,
772 func, PCIR_COMMAND, 1);
773 command &= ~(PCIM_CMD_MEMEN | PCIM_CMD_PORTEN);
774 mv_pcib_write_config(sc->sc_dev, bus, slot, func,
775 PCIR_COMMAND, command, 1);
777 error = mv_pcib_init_all_bars(sc, bus, slot, func,
783 command |= PCIM_CMD_BUSMASTEREN | PCIM_CMD_MEMEN |
785 mv_pcib_write_config(sc->sc_dev, bus, slot, func,
786 PCIR_COMMAND, command, 1);
788 /* Handle PCI-PCI bridges */
789 class = mv_pcib_read_config(sc->sc_dev, bus, slot,
790 func, PCIR_CLASS, 1);
791 subclass = mv_pcib_read_config(sc->sc_dev, bus, slot,
792 func, PCIR_SUBCLASS, 1);
794 if (class != PCIC_BRIDGE ||
795 subclass != PCIS_BRIDGE_PCI)
798 mv_pcib_init_bridge(sc, bus, slot, func);
802 /* Enable all ABCD interrupts */
803 pcib_write_irq_mask(sc, (0xF << 24));
809 mv_pcib_init_all_bars(struct mv_pcib_softc *sc, int bus, int slot,
810 int func, int hdrtype)
814 maxbar = (hdrtype & PCIM_HDRTYPE) ? 0 : 6;
817 /* Program the base address registers */
818 while (bar < maxbar) {
819 i = mv_pcib_init_bar(sc, bus, slot, func, bar);
822 device_printf(sc->sc_dev,
823 "PCI IO/Memory space exhausted\n");
831 static struct resource *
832 mv_pcib_alloc_resource(device_t dev, device_t child, int type, int *rid,
833 u_long start, u_long end, u_long count, u_int flags)
835 struct mv_pcib_softc *sc = device_get_softc(dev);
836 struct rman *rm = NULL;
837 struct resource *res;
841 rm = &sc->sc_io_rman;
844 rm = &sc->sc_mem_rman;
847 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), dev,
848 type, rid, start, end, count, flags));
851 if ((start == 0UL) && (end == ~0UL)) {
852 start = sc->sc_mem_base;
853 end = sc->sc_mem_base + sc->sc_mem_size - 1;
854 count = sc->sc_mem_size;
857 if ((start < sc->sc_mem_base) || (start + count - 1 != end) ||
858 (end > sc->sc_mem_base + sc->sc_mem_size - 1))
861 res = rman_reserve_resource(rm, start, end, count, flags, child);
865 rman_set_rid(res, *rid);
866 rman_set_bustag(res, fdtbus_bs_tag);
867 rman_set_bushandle(res, start);
869 if (flags & RF_ACTIVE)
870 if (bus_activate_resource(child, type, *rid, res)) {
871 rman_release_resource(res);
879 mv_pcib_release_resource(device_t dev, device_t child, int type, int rid,
880 struct resource *res)
883 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY)
884 return (BUS_RELEASE_RESOURCE(device_get_parent(dev), child,
887 return (rman_release_resource(res));
891 mv_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
893 struct mv_pcib_softc *sc = device_get_softc(dev);
897 *result = sc->sc_busnr;
899 case PCIB_IVAR_DOMAIN:
900 *result = device_get_unit(dev);
908 mv_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
910 struct mv_pcib_softc *sc = device_get_softc(dev);
914 sc->sc_busnr = value;
922 pcib_write_irq_mask(struct mv_pcib_softc *sc, uint32_t mask)
925 if (!sc->sc_type != MV_TYPE_PCI)
928 bus_space_write_4(sc->sc_bst, sc->sc_bsh, PCIE_REG_IRQ_MASK, mask);
932 mv_pcib_hw_cfginit(void)
934 static int opened = 0;
939 mtx_init(&pcicfg_mtx, "pcicfg", NULL, MTX_SPIN);
944 mv_pcib_hw_cfgread(struct mv_pcib_softc *sc, u_int bus, u_int slot,
945 u_int func, u_int reg, int bytes)
947 uint32_t addr, data, ca, cd;
949 ca = (sc->sc_type != MV_TYPE_PCI) ?
950 PCIE_REG_CFG_ADDR : PCI_REG_CFG_ADDR;
951 cd = (sc->sc_type != MV_TYPE_PCI) ?
952 PCIE_REG_CFG_DATA : PCI_REG_CFG_DATA;
953 addr = PCI_CFG_ENA | PCI_CFG_BUS(bus) | PCI_CFG_DEV(slot) |
954 PCI_CFG_FUN(func) | PCI_CFG_PCIE_REG(reg);
956 mtx_lock_spin(&pcicfg_mtx);
957 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ca, addr);
962 data = bus_space_read_1(sc->sc_bst, sc->sc_bsh,
966 data = le16toh(bus_space_read_2(sc->sc_bst, sc->sc_bsh,
970 data = le32toh(bus_space_read_4(sc->sc_bst, sc->sc_bsh,
974 mtx_unlock_spin(&pcicfg_mtx);
979 mv_pcib_hw_cfgwrite(struct mv_pcib_softc *sc, u_int bus, u_int slot,
980 u_int func, u_int reg, uint32_t data, int bytes)
982 uint32_t addr, ca, cd;
984 ca = (sc->sc_type != MV_TYPE_PCI) ?
985 PCIE_REG_CFG_ADDR : PCI_REG_CFG_ADDR;
986 cd = (sc->sc_type != MV_TYPE_PCI) ?
987 PCIE_REG_CFG_DATA : PCI_REG_CFG_DATA;
988 addr = PCI_CFG_ENA | PCI_CFG_BUS(bus) | PCI_CFG_DEV(slot) |
989 PCI_CFG_FUN(func) | PCI_CFG_PCIE_REG(reg);
991 mtx_lock_spin(&pcicfg_mtx);
992 bus_space_write_4(sc->sc_bst, sc->sc_bsh, ca, addr);
996 bus_space_write_1(sc->sc_bst, sc->sc_bsh,
997 cd + (reg & 3), data);
1000 bus_space_write_2(sc->sc_bst, sc->sc_bsh,
1001 cd + (reg & 2), htole16(data));
1004 bus_space_write_4(sc->sc_bst, sc->sc_bsh,
1008 mtx_unlock_spin(&pcicfg_mtx);
1012 mv_pcib_maxslots(device_t dev)
1014 struct mv_pcib_softc *sc = device_get_softc(dev);
1016 return ((sc->sc_type != MV_TYPE_PCI) ? 1 : PCI_SLOTMAX);
1020 mv_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,
1021 u_int reg, int bytes)
1023 struct mv_pcib_softc *sc = device_get_softc(dev);
1025 /* Return ~0 if link is inactive or trying to read from Root */
1026 if ((bus_space_read_4(sc->sc_bst, sc->sc_bsh, PCIE_REG_STATUS) &
1027 PCIE_STATUS_LINK_DOWN) || (slot == 0))
1030 return (mv_pcib_hw_cfgread(sc, bus, slot, func, reg, bytes));
1034 mv_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func,
1035 u_int reg, uint32_t val, int bytes)
1037 struct mv_pcib_softc *sc = device_get_softc(dev);
1039 /* Return if link is inactive or trying to write to Root */
1040 if ((bus_space_read_4(sc->sc_bst, sc->sc_bsh, PCIE_REG_STATUS) &
1041 PCIE_STATUS_LINK_DOWN) || (slot == 0))
1044 mv_pcib_hw_cfgwrite(sc, bus, slot, func, reg, val, bytes);
1048 mv_pcib_route_interrupt(device_t bus, device_t dev, int pin)
1050 struct mv_pcib_softc *sc;
1051 struct ofw_pci_register reg;
1052 uint32_t pintr, mintr[4];
1056 sc = device_get_softc(bus);
1059 /* Fabricate imap information in case this isn't an OFW device */
1060 bzero(®, sizeof(reg));
1061 reg.phys_hi = (pci_get_bus(dev) << OFW_PCI_PHYS_HI_BUSSHIFT) |
1062 (pci_get_slot(dev) << OFW_PCI_PHYS_HI_DEVICESHIFT) |
1063 (pci_get_function(dev) << OFW_PCI_PHYS_HI_FUNCTIONSHIFT);
1065 icells = ofw_bus_lookup_imap(ofw_bus_get_node(dev), &sc->sc_pci_iinfo,
1066 ®, sizeof(reg), &pintr, sizeof(pintr), mintr, sizeof(mintr),
1069 return (ofw_bus_map_intr(dev, iparent, icells, mintr));
1071 /* Maybe it's a real interrupt, not an intpin */
1075 device_printf(bus, "could not route pin %d for device %d.%d\n",
1076 pin, pci_get_slot(dev), pci_get_function(dev));
1077 return (PCI_INVALID_IRQ);
1081 mv_pcib_decode_win(phandle_t node, struct mv_pcib_softc *sc)
1083 struct mv_pci_range io_space, mem_space;
1089 if ((error = mv_pci_ranges(node, &io_space, &mem_space)) != 0) {
1090 device_printf(dev, "could not retrieve 'ranges' data\n");
1094 /* Configure CPU decoding windows */
1095 error = decode_win_cpu_set(sc->sc_win_target,
1096 sc->sc_io_win_attr, io_space.base_parent, io_space.len, ~0);
1098 device_printf(dev, "could not set up CPU decode "
1099 "window for PCI IO\n");
1102 error = decode_win_cpu_set(sc->sc_win_target,
1103 sc->sc_mem_win_attr, mem_space.base_parent, mem_space.len,
1104 mem_space.base_parent);
1106 device_printf(dev, "could not set up CPU decode "
1107 "windows for PCI MEM\n");
1111 sc->sc_io_base = io_space.base_parent;
1112 sc->sc_io_size = io_space.len;
1114 sc->sc_mem_base = mem_space.base_parent;
1115 sc->sc_mem_size = mem_space.len;
1120 #if defined(SOC_MV_ARMADAXP)
1122 mv_pcib_map_msi(device_t dev, device_t child, int irq, uint64_t *addr,
1125 struct mv_pcib_softc *sc;
1127 sc = device_get_softc(dev);
1128 irq = irq - MSI_IRQ;
1130 /* validate parameters */
1131 if (isclr(&sc->sc_msi_bitmap, irq)) {
1132 device_printf(dev, "invalid MSI 0x%x\n", irq);
1136 mv_msi_data(irq, addr, data);
1138 debugf("%s: irq: %d addr: %jx data: %x\n",
1139 __func__, irq, *addr, *data);
1145 mv_pcib_alloc_msi(device_t dev, device_t child, int count,
1146 int maxcount __unused, int *irqs)
1148 struct mv_pcib_softc *sc;
1151 if (powerof2(count) == 0 || count > MSI_IRQ_NUM)
1154 sc = device_get_softc(dev);
1155 mtx_lock(&sc->sc_msi_mtx);
1157 for (start = 0; (start + count) < MSI_IRQ_NUM; start++) {
1158 for (i = start; i < start + count; i++) {
1159 if (isset(&sc->sc_msi_bitmap, i))
1162 if (i == start + count)
1166 if ((start + count) == MSI_IRQ_NUM) {
1167 mtx_unlock(&sc->sc_msi_mtx);
1171 for (i = start; i < start + count; i++) {
1172 setbit(&sc->sc_msi_bitmap, i);
1173 *irqs++ = MSI_IRQ + i;
1175 debugf("%s: start: %x count: %x\n", __func__, start, count);
1177 mtx_unlock(&sc->sc_msi_mtx);
1182 mv_pcib_release_msi(device_t dev, device_t child, int count, int *irqs)
1184 struct mv_pcib_softc *sc;
1187 sc = device_get_softc(dev);
1188 mtx_lock(&sc->sc_msi_mtx);
1190 for (i = 0; i < count; i++)
1191 clrbit(&sc->sc_msi_bitmap, irqs[i] - MSI_IRQ);
1193 mtx_unlock(&sc->sc_msi_mtx);