2 * Copyright (c) 2015,2016 Annapurna Labs Ltd. and affiliates
5 * Developed by Semihalf.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * Alpine PCI/PCI-Express controller driver.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/module.h>
44 #include <dev/ofw/openfirm.h>
45 #include <dev/ofw/ofw_bus.h>
46 #include <dev/ofw/ofw_bus_subr.h>
47 #include <dev/pci/pci_host_generic.h>
48 #include <dev/pci/pcivar.h>
49 #include <dev/pci/pcireg.h>
53 #include "contrib/alpine-hal/al_hal_unit_adapter_regs.h"
54 #include "contrib/alpine-hal/al_hal_pcie.h"
55 #include "contrib/alpine-hal/al_hal_pcie_axi_reg.h"
57 #define ANNAPURNA_VENDOR_ID 0x1c36
59 /* Forward prototypes */
60 static int al_pcib_probe(device_t);
61 static int al_pcib_attach(device_t);
62 static void al_pcib_fixup(device_t);
64 static struct ofw_compat_data compat_data[] = {
65 {"annapurna-labs,al-internal-pcie", true},
66 {"annapurna-labs,alpine-internal-pcie", true},
71 * Bus interface definitions.
73 static device_method_t al_pcib_methods[] = {
74 /* Device interface */
75 DEVMETHOD(device_probe, al_pcib_probe),
76 DEVMETHOD(device_attach, al_pcib_attach),
81 DEFINE_CLASS_1(pcib, al_pcib_driver, al_pcib_methods,
82 sizeof(struct generic_pcie_softc), generic_pcie_driver);
84 static devclass_t anpa_pcib_devclass;
86 DRIVER_MODULE(alpine_pcib, simplebus, al_pcib_driver, anpa_pcib_devclass, 0, 0);
87 DRIVER_MODULE(alpine_pcib, ofwbus, al_pcib_driver, anpa_pcib_devclass, 0, 0);
90 al_pcib_probe(device_t dev)
93 if (!ofw_bus_status_okay(dev))
96 if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
100 "Annapurna-Labs Integrated Internal PCI-E Controller");
101 return (BUS_PROBE_DEFAULT);
105 al_pcib_attach(device_t dev)
109 rv = pci_host_generic_attach(dev);
111 /* Annapurna quirk: configure vendor-specific registers */
119 al_pcib_fixup(device_t dev)
124 int bus, slot, func, maxfunc;
126 /* Fixup is only needed on bus 0 */
128 for (slot = 0; slot <= PCI_SLOTMAX; slot++) {
130 for (func = 0; func <= maxfunc; func++) {
131 hdrtype = PCIB_READ_CONFIG(dev, bus, slot, func,
134 if ((hdrtype & PCIM_HDRTYPE) > PCI_MAXHDRTYPE)
137 if (func == 0 && (hdrtype & PCIM_MFDEV) != 0)
138 maxfunc = PCI_FUNCMAX;
140 vid = PCIB_READ_CONFIG(dev, bus, slot, func,
142 if (vid == ANNAPURNA_VENDOR_ID) {
143 val = PCIB_READ_CONFIG(dev, bus, slot, func,
144 AL_PCI_AXI_CFG_AND_CTR_0, 4);
145 val |= PCIE_AXI_PF_AXI_ATTR_OVRD_FUNC_CTRL_2_PF_VEC_PH_VEC_OVRD_FROM_AXUSER_MASK;
146 PCIB_WRITE_CONFIG(dev, bus, slot, func,
147 AL_PCI_AXI_CFG_AND_CTR_0, val, 4);
149 val = PCIB_READ_CONFIG(dev, bus, slot, func,
150 AL_PCI_APP_CONTROL, 4);
152 val |= PCIE_AXI_PF_AXI_ATTR_OVRD_FUNC_CTRL_4_PF_VEC_MEM_ADDR54_63_SEL_TGTID_MASK;
153 PCIB_WRITE_CONFIG(dev, bus, slot, func,
154 AL_PCI_APP_CONTROL, val, 4);