2 * Copyright (c) 2016 Michal Meloun <mmel@FreeBSD.org>
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 AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 * Nvidia Integrated PCI/PCI-Express controller driver.
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/devmap.h>
39 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/module.h>
42 #include <sys/mutex.h>
45 #include <machine/intr.h>
48 #include <vm/vm_extern.h>
49 #include <vm/vm_kern.h>
52 #include <dev/extres/clk/clk.h>
53 #include <dev/extres/hwreset/hwreset.h>
54 #include <dev/extres/phy/phy.h>
55 #include <dev/extres/regulator/regulator.h>
56 #include <dev/ofw/ofw_bus.h>
57 #include <dev/ofw/ofw_bus_subr.h>
58 #include <dev/ofw/ofw_pci.h>
59 #include <dev/ofw/ofwpci.h>
60 #include <dev/pci/pcivar.h>
61 #include <dev/pci/pcireg.h>
62 #include <dev/pci/pcib_private.h>
64 #include <machine/resource.h>
65 #include <machine/bus.h>
67 #include <arm/nvidia/tegra_pmc.h>
69 #include "ofw_bus_if.h"
74 #define AFI_AXI_BAR0_SZ 0x000
75 #define AFI_AXI_BAR1_SZ 0x004
76 #define AFI_AXI_BAR2_SZ 0x008
77 #define AFI_AXI_BAR3_SZ 0x00c
78 #define AFI_AXI_BAR4_SZ 0x010
79 #define AFI_AXI_BAR5_SZ 0x014
80 #define AFI_AXI_BAR0_START 0x018
81 #define AFI_AXI_BAR1_START 0x01c
82 #define AFI_AXI_BAR2_START 0x020
83 #define AFI_AXI_BAR3_START 0x024
84 #define AFI_AXI_BAR4_START 0x028
85 #define AFI_AXI_BAR5_START 0x02c
86 #define AFI_FPCI_BAR0 0x030
87 #define AFI_FPCI_BAR1 0x034
88 #define AFI_FPCI_BAR2 0x038
89 #define AFI_FPCI_BAR3 0x03c
90 #define AFI_FPCI_BAR4 0x040
91 #define AFI_FPCI_BAR5 0x044
92 #define AFI_MSI_BAR_SZ 0x060
93 #define AFI_MSI_FPCI_BAR_ST 0x064
94 #define AFI_MSI_AXI_BAR_ST 0x068
95 #define AFI_MSI_VEC(x) (0x06c + 4 * (x))
96 #define AFI_MSI_EN_VEC(x) (0x08c + 4 * (x))
97 #define AFI_MSI_INTR_IN_REG 32
98 #define AFI_MSI_REGS 8
100 #define AFI_CONFIGURATION 0x0ac
101 #define AFI_CONFIGURATION_EN_FPCI (1 << 0)
103 #define AFI_FPCI_ERROR_MASKS 0x0b0
104 #define AFI_INTR_MASK 0x0b4
105 #define AFI_INTR_MASK_MSI_MASK (1 << 8)
106 #define AFI_INTR_MASK_INT_MASK (1 << 0)
108 #define AFI_INTR_CODE 0x0b8
109 #define AFI_INTR_CODE_MASK 0xf
110 #define AFI_INTR_CODE_INT_CODE_INI_SLVERR 1
111 #define AFI_INTR_CODE_INT_CODE_INI_DECERR 2
112 #define AFI_INTR_CODE_INT_CODE_TGT_SLVERR 3
113 #define AFI_INTR_CODE_INT_CODE_TGT_DECERR 4
114 #define AFI_INTR_CODE_INT_CODE_TGT_WRERR 5
115 #define AFI_INTR_CODE_INT_CODE_SM_MSG 6
116 #define AFI_INTR_CODE_INT_CODE_DFPCI_DECERR 7
117 #define AFI_INTR_CODE_INT_CODE_AXI_DECERR 8
118 #define AFI_INTR_CODE_INT_CODE_FPCI_TIMEOUT 9
119 #define AFI_INTR_CODE_INT_CODE_PE_PRSNT_SENSE 10
120 #define AFI_INTR_CODE_INT_CODE_PE_CLKREQ_SENSE 11
121 #define AFI_INTR_CODE_INT_CODE_CLKCLAMP_SENSE 12
122 #define AFI_INTR_CODE_INT_CODE_RDY4PD_SENSE 13
123 #define AFI_INTR_CODE_INT_CODE_P2P_ERROR 14
125 #define AFI_INTR_SIGNATURE 0x0bc
126 #define AFI_UPPER_FPCI_ADDRESS 0x0c0
127 #define AFI_SM_INTR_ENABLE 0x0c4
128 #define AFI_SM_INTR_RP_DEASSERT (1 << 14)
129 #define AFI_SM_INTR_RP_ASSERT (1 << 13)
130 #define AFI_SM_INTR_HOTPLUG (1 << 12)
131 #define AFI_SM_INTR_PME (1 << 11)
132 #define AFI_SM_INTR_FATAL_ERROR (1 << 10)
133 #define AFI_SM_INTR_UNCORR_ERROR (1 << 9)
134 #define AFI_SM_INTR_CORR_ERROR (1 << 8)
135 #define AFI_SM_INTR_INTD_DEASSERT (1 << 7)
136 #define AFI_SM_INTR_INTC_DEASSERT (1 << 6)
137 #define AFI_SM_INTR_INTB_DEASSERT (1 << 5)
138 #define AFI_SM_INTR_INTA_DEASSERT (1 << 4)
139 #define AFI_SM_INTR_INTD_ASSERT (1 << 3)
140 #define AFI_SM_INTR_INTC_ASSERT (1 << 2)
141 #define AFI_SM_INTR_INTB_ASSERT (1 << 1)
142 #define AFI_SM_INTR_INTA_ASSERT (1 << 0)
144 #define AFI_AFI_INTR_ENABLE 0x0c8
145 #define AFI_AFI_INTR_ENABLE_CODE(code) (1 << (code))
147 #define AFI_PCIE_CONFIG 0x0f8
148 #define AFI_PCIE_CONFIG_PCIE_DISABLE(x) (1 << ((x) + 1))
149 #define AFI_PCIE_CONFIG_PCIE_DISABLE_ALL 0x6
150 #define AFI_PCIE_CONFIG_SM2TMS0_XBAR_CONFIG_MASK (0xf << 20)
151 #define AFI_PCIE_CONFIG_SM2TMS0_XBAR_CONFIG_XBAR2_1 (0x0 << 20)
152 #define AFI_PCIE_CONFIG_SM2TMS0_XBAR_CONFIG_XBAR4_1 (0x1 << 20)
154 #define AFI_FUSE 0x104
155 #define AFI_FUSE_PCIE_T0_GEN2_DIS (1 << 2)
157 #define AFI_PEX0_CTRL 0x110
158 #define AFI_PEX1_CTRL 0x118
159 #define AFI_PEX2_CTRL 0x128
160 #define AFI_PEX_CTRL_OVERRIDE_EN (1 << 4)
161 #define AFI_PEX_CTRL_REFCLK_EN (1 << 3)
162 #define AFI_PEX_CTRL_CLKREQ_EN (1 << 1)
163 #define AFI_PEX_CTRL_RST_L (1 << 0)
165 #define AFI_AXI_BAR6_SZ 0x134
166 #define AFI_AXI_BAR7_SZ 0x138
167 #define AFI_AXI_BAR8_SZ 0x13c
168 #define AFI_AXI_BAR6_START 0x140
169 #define AFI_AXI_BAR7_START 0x144
170 #define AFI_AXI_BAR8_START 0x148
171 #define AFI_FPCI_BAR6 0x14c
172 #define AFI_FPCI_BAR7 0x150
173 #define AFI_FPCI_BAR8 0x154
174 #define AFI_PLLE_CONTROL 0x160
175 #define AFI_PLLE_CONTROL_BYPASS_PADS2PLLE_CONTROL (1 << 9)
176 #define AFI_PLLE_CONTROL_BYPASS_PCIE2PLLE_CONTROL (1 << 8)
177 #define AFI_PLLE_CONTROL_PADS2PLLE_CONTROL_EN (1 << 1)
178 #define AFI_PLLE_CONTROL_PCIE2PLLE_CONTROL_EN (1 << 0)
180 #define AFI_PEXBIAS_CTRL 0x168
182 /* Configuration space */
183 #define RP_VEND_XP 0x0F00
184 #define RP_VEND_XP_DL_UP (1 << 30)
186 #define RP_VEND_CTL2 0x0fa8
187 #define RP_VEND_CTL2_PCA_ENABLE (1 << 7)
189 #define RP_PRIV_MISC 0x0FE0
190 #define RP_PRIV_MISC_PRSNT_MAP_EP_PRSNT (0xE << 0)
191 #define RP_PRIV_MISC_PRSNT_MAP_EP_ABSNT (0xF << 0)
193 #define RP_LINK_CONTROL_STATUS 0x0090
194 #define RP_LINK_CONTROL_STATUS_DL_LINK_ACTIVE 0x20000000
195 #define RP_LINK_CONTROL_STATUS_LINKSTAT_MASK 0x3fff0000
198 #define PADS_REFCLK_CFG0 0x000c8
199 #define PADS_REFCLK_CFG1 0x000cc
202 /* Wait 50 ms (per port) for link. */
203 #define TEGRA_PCIE_LINKUP_TIMEOUT 50000
205 /* FPCI Address space */
206 #define FPCI_MAP_IO 0xFDFC000000ULL
207 #define FPCI_MAP_TYPE0_CONFIG 0xFDFC000000ULL
208 #define FPCI_MAP_TYPE1_CONFIG 0xFDFF000000ULL
209 #define FPCI_MAP_EXT_TYPE0_CONFIG 0xFE00000000ULL
210 #define FPCI_MAP_EXT_TYPE1_CONFIG 0xFE10000000ULL
212 #define TEGRA_PCIB_MSI_ENABLE
216 #define debugf(fmt, args...) do { printf(fmt,##args); } while (0)
218 #define debugf(fmt, args...)
222 * Configuration space format:
223 * [27:24] extended register
225 * [15:11] slot (device)
229 #define PCI_CFG_EXT_REG(reg) ((((reg) >> 8) & 0x0f) << 24)
230 #define PCI_CFG_BUS(bus) (((bus) & 0xff) << 16)
231 #define PCI_CFG_DEV(dev) (((dev) & 0x1f) << 11)
232 #define PCI_CFG_FUN(fun) (((fun) & 0x07) << 8)
233 #define PCI_CFG_BASE_REG(reg) ((reg) & 0xff)
235 #define PADS_WR4(_sc, _r, _v) bus_write_4((_sc)->pads_mem_res, (_r), (_v))
236 #define PADS_RD4(_sc, _r) bus_read_4((_sc)->pads_mem_res, (_r))
237 #define AFI_WR4(_sc, _r, _v) bus_write_4((_sc)->afi_mem_res, (_r), (_v))
238 #define AFI_RD4(_sc, _r) bus_read_4((_sc)->afi_mem_res, (_r))
241 bus_size_t axi_start;
242 bus_size_t fpci_start;
245 {AFI_AXI_BAR0_START, AFI_FPCI_BAR0, AFI_AXI_BAR0_SZ}, /* BAR 0 */
246 {AFI_AXI_BAR1_START, AFI_FPCI_BAR1, AFI_AXI_BAR1_SZ}, /* BAR 1 */
247 {AFI_AXI_BAR2_START, AFI_FPCI_BAR2, AFI_AXI_BAR2_SZ}, /* BAR 2 */
248 {AFI_AXI_BAR3_START, AFI_FPCI_BAR3, AFI_AXI_BAR3_SZ}, /* BAR 3 */
249 {AFI_AXI_BAR4_START, AFI_FPCI_BAR4, AFI_AXI_BAR4_SZ}, /* BAR 4 */
250 {AFI_AXI_BAR5_START, AFI_FPCI_BAR5, AFI_AXI_BAR5_SZ}, /* BAR 5 */
251 {AFI_AXI_BAR6_START, AFI_FPCI_BAR6, AFI_AXI_BAR6_SZ}, /* BAR 6 */
252 {AFI_AXI_BAR7_START, AFI_FPCI_BAR7, AFI_AXI_BAR7_SZ}, /* BAR 7 */
253 {AFI_AXI_BAR8_START, AFI_FPCI_BAR8, AFI_AXI_BAR8_SZ}, /* BAR 8 */
254 {AFI_MSI_AXI_BAR_ST, AFI_MSI_FPCI_BAR_ST, AFI_MSI_BAR_SZ}, /* MSI 9 */
259 char **regulator_names;
262 uint32_t pads_refclk_cfg0;
263 uint32_t pads_refclk_cfg1;
266 /* Tegra 124 config. */
267 static char *tegra124_reg_names[] = {
270 "avdd-pex-pll-supply",
272 "hvdd-pex-pll-e-supply",
273 "vddio-pex-ctl-supply",
274 "avdd-pll-erefe-supply",
278 static struct pcie_soc tegra124_soc = {
279 .regulator_names = tegra124_reg_names,
282 .pads_refclk_cfg0 = 0x44ac44ac,
285 /* Tegra 210 config. */
286 static char *tegra210_reg_names[] = {
287 "avdd-pll-uerefe-supply",
290 "dvdd-pex-pll-supply",
291 "hvdd-pex-pll-e-supply",
292 "vddio-pex-ctl-supply",
296 static struct pcie_soc tegra210_soc = {
297 .regulator_names = tegra210_reg_names,
300 .pads_refclk_cfg0 = 0x90b890b8,
303 /* Compatible devices. */
304 static struct ofw_compat_data compat_data[] = {
305 {"nvidia,tegra124-pcie", (uintptr_t)&tegra124_soc},
306 {"nvidia,tegra210-pcie", (uintptr_t)&tegra210_soc},
310 #define TEGRA_FLAG_MSI_USED 0x0001
311 struct tegra_pcib_irqsrc {
312 struct intr_irqsrc isrc;
317 struct tegra_pcib_port {
319 int port_idx; /* chip port index */
320 int num_lanes; /* number of lanes */
321 bus_size_t afi_pex_ctrl; /* offset of afi_pex_ctrl */
322 phy_t phy; /* port phy */
324 /* Config space properties. */
325 bus_addr_t rp_base_addr; /* PA of config window */
326 bus_size_t rp_size; /* size of config window */
327 bus_space_handle_t cfg_handle; /* handle of config window */
330 #define TEGRA_PCIB_MAX_PORTS 3
331 #define TEGRA_PCIB_MAX_MSI AFI_MSI_INTR_IN_REG * AFI_MSI_REGS
332 struct tegra_pcib_softc {
333 struct ofw_pci_softc ofw_pci;
335 struct pcie_soc *soc;
337 struct resource *pads_mem_res;
338 struct resource *afi_mem_res;
339 struct resource *cfg_mem_res;
340 struct resource *irq_res;
341 struct resource *msi_irq_res;
343 void *msi_intr_cookie;
345 struct ofw_pci_range mem_range;
346 struct ofw_pci_range pref_mem_range;
347 struct ofw_pci_range io_range;
353 hwreset_t hwreset_pex;
354 hwreset_t hwreset_afi;
355 hwreset_t hwreset_pcie_x;
356 regulator_t regulators[16]; /* Safe maximum */
358 vm_offset_t msi_page; /* VA of MSI page */
359 bus_addr_t cfg_base_addr; /* base address of config */
360 bus_size_t cfg_cur_offs; /* currently mapped window */
361 bus_space_handle_t cfg_handle; /* handle of config window */
362 bus_space_tag_t bus_tag; /* tag of config window */
365 struct tegra_pcib_port *ports[TEGRA_PCIB_MAX_PORTS];
366 struct tegra_pcib_irqsrc *isrcs;
370 tegra_pcib_maxslots(device_t dev)
376 tegra_pcib_route_interrupt(device_t bus, device_t dev, int pin)
378 struct tegra_pcib_softc *sc;
381 sc = device_get_softc(bus);
382 irq = intr_map_clone_irq(rman_get_start(sc->irq_res));
383 device_printf(bus, "route pin %d for device %d.%d to %u\n",
384 pin, pci_get_slot(dev), pci_get_function(dev),
391 tegra_pcbib_map_cfg(struct tegra_pcib_softc *sc, u_int bus, u_int slot,
392 u_int func, u_int reg)
397 offs = sc->cfg_base_addr;
398 offs |= PCI_CFG_BUS(bus) | PCI_CFG_DEV(slot) | PCI_CFG_FUN(func) |
399 PCI_CFG_EXT_REG(reg);
400 if ((sc->cfg_handle != 0) && (sc->cfg_cur_offs == offs))
402 if (sc->cfg_handle != 0)
403 bus_space_unmap(sc->bus_tag, sc->cfg_handle, 0x800);
405 rv = bus_space_map(sc->bus_tag, offs, 0x800, 0, &sc->cfg_handle);
407 device_printf(sc->dev, "Cannot map config space\n");
409 sc->cfg_cur_offs = offs;
414 tegra_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,
415 u_int reg, int bytes)
417 struct tegra_pcib_softc *sc;
418 bus_space_handle_t hndl;
423 sc = device_get_softc(dev);
427 for (i = 0; i < TEGRA_PCIB_MAX_PORTS; i++) {
428 if ((sc->ports[i] != NULL) &&
429 (sc->ports[i]->port_idx == slot)) {
430 hndl = sc->ports[i]->cfg_handle;
435 if (i >= TEGRA_PCIB_MAX_PORTS)
438 rv = tegra_pcbib_map_cfg(sc, bus, slot, func, reg);
441 hndl = sc->cfg_handle;
442 off = PCI_CFG_BASE_REG(reg);
445 val = bus_space_read_4(sc->bus_tag, hndl, off & ~3);
455 val >>= ((off & 3) << 3);
463 tegra_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func,
464 u_int reg, uint32_t val, int bytes)
466 struct tegra_pcib_softc *sc;
467 bus_space_handle_t hndl;
472 sc = device_get_softc(dev);
476 for (i = 0; i < TEGRA_PCIB_MAX_PORTS; i++) {
477 if ((sc->ports[i] != NULL) &&
478 (sc->ports[i]->port_idx == slot)) {
479 hndl = sc->ports[i]->cfg_handle;
484 if (i >= TEGRA_PCIB_MAX_PORTS)
487 rv = tegra_pcbib_map_cfg(sc, bus, slot, func, reg);
490 hndl = sc->cfg_handle;
491 off = PCI_CFG_BASE_REG(reg);
496 bus_space_write_4(sc->bus_tag, hndl, off, val);
499 val2 = bus_space_read_4(sc->bus_tag, hndl, off & ~3);
500 val2 &= ~(0xffff << ((off & 3) << 3));
501 val2 |= ((val & 0xffff) << ((off & 3) << 3));
502 bus_space_write_4(sc->bus_tag, hndl, off & ~3, val2);
505 val2 = bus_space_read_4(sc->bus_tag, hndl, off & ~3);
506 val2 &= ~(0xff << ((off & 3) << 3));
507 val2 |= ((val & 0xff) << ((off & 3) << 3));
508 bus_space_write_4(sc->bus_tag, hndl, off & ~3, val2);
513 static int tegra_pci_intr(void *arg)
515 struct tegra_pcib_softc *sc = arg;
516 uint32_t code, signature;
518 code = bus_read_4(sc->afi_mem_res, AFI_INTR_CODE) & AFI_INTR_CODE_MASK;
519 signature = bus_read_4(sc->afi_mem_res, AFI_INTR_SIGNATURE);
520 bus_write_4(sc->afi_mem_res, AFI_INTR_CODE, 0);
521 if (code == AFI_INTR_CODE_INT_CODE_SM_MSG)
522 return(FILTER_STRAY);
524 printf("tegra_pci_intr: code %x sig %x\n", code, signature);
525 return (FILTER_HANDLED);
528 /* -----------------------------------------------------------------------
533 tegra_pcib_alloc_msi(device_t pci, device_t child, int count, int maxcount,
536 phandle_t msi_parent;
538 /* XXXX ofw_bus_msimap() don't works for Tegra DT.
539 ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), &msi_parent,
542 msi_parent = OF_xref_from_node(ofw_bus_get_node(pci));
543 return (intr_alloc_msi(pci, child, msi_parent, count, maxcount,
548 tegra_pcib_release_msi(device_t pci, device_t child, int count, int *irqs)
550 phandle_t msi_parent;
552 /* XXXX ofw_bus_msimap() don't works for Tegra DT.
553 ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), &msi_parent,
556 msi_parent = OF_xref_from_node(ofw_bus_get_node(pci));
557 return (intr_release_msi(pci, child, msi_parent, count, irqs));
561 tegra_pcib_map_msi(device_t pci, device_t child, int irq, uint64_t *addr,
564 phandle_t msi_parent;
566 /* XXXX ofw_bus_msimap() don't works for Tegra DT.
567 ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), &msi_parent,
570 msi_parent = OF_xref_from_node(ofw_bus_get_node(pci));
571 return (intr_map_msi(pci, child, msi_parent, irq, addr, data));
574 #ifdef TEGRA_PCIB_MSI_ENABLE
576 /* --------------------------------------------------------------------------
583 tegra_pcib_isrc_mask(struct tegra_pcib_softc *sc,
584 struct tegra_pcib_irqsrc *tgi, uint32_t val)
589 offs = tgi->irq / AFI_MSI_INTR_IN_REG;
590 bit = 1 << (tgi->irq % AFI_MSI_INTR_IN_REG);
593 AFI_WR4(sc, AFI_MSI_VEC(offs), bit);
594 reg = AFI_RD4(sc, AFI_MSI_EN_VEC(offs));
599 AFI_WR4(sc, AFI_MSI_EN_VEC(offs), reg);
603 tegra_pcib_msi_intr(void *arg)
605 u_int irq, i, bit, reg;
606 struct tegra_pcib_softc *sc;
607 struct trapframe *tf;
608 struct tegra_pcib_irqsrc *tgi;
610 sc = (struct tegra_pcib_softc *)arg;
611 tf = curthread->td_intr_frame;
613 for (i = 0; i < AFI_MSI_REGS; i++) {
614 reg = AFI_RD4(sc, AFI_MSI_VEC(i));
615 /* Handle one vector. */
619 AFI_WR4(sc, AFI_MSI_VEC(i), 1 << bit);
620 irq = i * AFI_MSI_INTR_IN_REG + bit;
621 tgi = &sc->isrcs[irq];
622 if (intr_isrc_dispatch(&tgi->isrc, tf) != 0) {
624 tegra_pcib_isrc_mask(sc, tgi, 0);
625 device_printf(sc->dev,
626 "Stray irq %u disabled\n", irq);
628 reg = AFI_RD4(sc, AFI_MSI_VEC(i));
631 return (FILTER_HANDLED);
635 tegra_pcib_msi_attach(struct tegra_pcib_softc *sc)
641 sc->isrcs = malloc(sizeof(*sc->isrcs) * TEGRA_PCIB_MAX_MSI, M_DEVBUF,
644 name = device_get_nameunit(sc->dev);
645 for (irq = 0; irq < TEGRA_PCIB_MAX_MSI; irq++) {
646 sc->isrcs[irq].irq = irq;
647 error = intr_isrc_register(&sc->isrcs[irq].isrc,
648 sc->dev, 0, "%s,%u", name, irq);
650 return (error); /* XXX deregister ISRCs */
652 if (intr_msi_register(sc->dev,
653 OF_xref_from_node(ofw_bus_get_node(sc->dev))) != 0)
660 tegra_pcib_msi_detach(struct tegra_pcib_softc *sc)
664 * There has not been established any procedure yet
665 * how to detach PIC from living system correctly.
667 device_printf(sc->dev, "%s: not implemented yet\n", __func__);
672 tegra_pcib_msi_disable_intr(device_t dev, struct intr_irqsrc *isrc)
674 struct tegra_pcib_softc *sc;
675 struct tegra_pcib_irqsrc *tgi;
677 sc = device_get_softc(dev);
678 tgi = (struct tegra_pcib_irqsrc *)isrc;
679 tegra_pcib_isrc_mask(sc, tgi, 0);
683 tegra_pcib_msi_enable_intr(device_t dev, struct intr_irqsrc *isrc)
685 struct tegra_pcib_softc *sc;
686 struct tegra_pcib_irqsrc *tgi;
688 sc = device_get_softc(dev);
689 tgi = (struct tegra_pcib_irqsrc *)isrc;
690 tegra_pcib_isrc_mask(sc, tgi, 1);
693 /* MSI interrupts are edge trigered -> do nothing */
695 tegra_pcib_msi_post_filter(device_t dev, struct intr_irqsrc *isrc)
700 tegra_pcib_msi_post_ithread(device_t dev, struct intr_irqsrc *isrc)
705 tegra_pcib_msi_pre_ithread(device_t dev, struct intr_irqsrc *isrc)
710 tegra_pcib_msi_setup_intr(device_t dev, struct intr_irqsrc *isrc,
711 struct resource *res, struct intr_map_data *data)
713 if (data == NULL || data->type != INTR_MAP_DATA_MSI)
716 if (isrc->isrc_handlers == 0)
717 tegra_pcib_msi_enable_intr(dev, isrc);
723 tegra_pcib_msi_teardown_intr(device_t dev, struct intr_irqsrc *isrc,
724 struct resource *res, struct intr_map_data *data)
726 struct tegra_pcib_softc *sc;
727 struct tegra_pcib_irqsrc *tgi;
729 sc = device_get_softc(dev);
730 tgi = (struct tegra_pcib_irqsrc *)isrc;
732 if (isrc->isrc_handlers == 0)
733 tegra_pcib_isrc_mask(sc, tgi, 0);
738 tegra_pcib_msi_alloc_msi(device_t dev, device_t child, int count, int maxcount,
739 device_t *pic, struct intr_irqsrc **srcs)
741 struct tegra_pcib_softc *sc;
745 KASSERT(powerof2(count), ("%s: bad count", __func__));
746 KASSERT(powerof2(maxcount), ("%s: bad maxcount", __func__));
748 sc = device_get_softc(dev);
752 for (irq = 0; (irq + count - 1) < TEGRA_PCIB_MAX_MSI; irq++) {
753 /* Start on an aligned interrupt */
754 if ((irq & (maxcount - 1)) != 0)
757 /* Assume we found a valid range until shown otherwise */
760 /* Check this range is valid */
761 for (end_irq = irq; end_irq < irq + count; end_irq++) {
762 /* This is already used */
763 if ((sc->isrcs[end_irq].flags & TEGRA_FLAG_MSI_USED) ==
764 TEGRA_FLAG_MSI_USED) {
774 /* Not enough interrupts were found */
775 if (!found || irq == (TEGRA_PCIB_MAX_MSI - 1)) {
776 mtx_unlock(&sc->mtx);
780 for (i = 0; i < count; i++) {
781 /* Mark the interrupt as used */
782 sc->isrcs[irq + i].flags |= TEGRA_FLAG_MSI_USED;
784 mtx_unlock(&sc->mtx);
786 for (i = 0; i < count; i++)
787 srcs[i] = (struct intr_irqsrc *)&sc->isrcs[irq + i];
788 *pic = device_get_parent(dev);
793 tegra_pcib_msi_release_msi(device_t dev, device_t child, int count,
794 struct intr_irqsrc **isrc)
796 struct tegra_pcib_softc *sc;
797 struct tegra_pcib_irqsrc *ti;
800 sc = device_get_softc(dev);
802 for (i = 0; i < count; i++) {
803 ti = (struct tegra_pcib_irqsrc *)isrc[i];
805 KASSERT((ti->flags & TEGRA_FLAG_MSI_USED) == TEGRA_FLAG_MSI_USED,
806 ("%s: Trying to release an unused MSI-X interrupt",
809 ti->flags &= ~TEGRA_FLAG_MSI_USED;
811 mtx_unlock(&sc->mtx);
816 tegra_pcib_msi_map_msi(device_t dev, device_t child, struct intr_irqsrc *isrc,
817 uint64_t *addr, uint32_t *data)
819 struct tegra_pcib_softc *sc = device_get_softc(dev);
820 struct tegra_pcib_irqsrc *ti = (struct tegra_pcib_irqsrc *)isrc;
822 *addr = vtophys(sc->msi_page);
828 /* ------------------------------------------------------------------- */
830 tegra_pcib_pex_ctrl(struct tegra_pcib_softc *sc, int port)
834 return (AFI_PEX0_CTRL);
836 return (AFI_PEX1_CTRL);
838 return (AFI_PEX2_CTRL);
840 panic("invalid port number: %d\n", port);
845 tegra_pcib_enable_fdt_resources(struct tegra_pcib_softc *sc)
849 rv = hwreset_assert(sc->hwreset_pcie_x);
851 device_printf(sc->dev, "Cannot assert 'pcie_x' reset\n");
854 rv = hwreset_assert(sc->hwreset_afi);
856 device_printf(sc->dev, "Cannot assert 'afi' reset\n");
859 rv = hwreset_assert(sc->hwreset_pex);
861 device_printf(sc->dev, "Cannot assert 'pex' reset\n");
865 tegra_powergate_power_off(TEGRA_POWERGATE_PCX);
868 for (i = 0; i < nitems(sc->regulators); i++) {
869 if (sc->regulators[i] == NULL)
871 rv = regulator_enable(sc->regulators[i]);
873 device_printf(sc->dev,
874 "Cannot enable '%s' regulator\n",
875 sc->soc->regulator_names[i]);
880 rv = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_PCX,
881 sc->clk_pex, sc->hwreset_pex);
883 device_printf(sc->dev, "Cannot enable 'PCX' powergate\n");
887 rv = hwreset_deassert(sc->hwreset_afi);
889 device_printf(sc->dev, "Cannot unreset 'afi' reset\n");
893 rv = clk_enable(sc->clk_afi);
895 device_printf(sc->dev, "Cannot enable 'afi' clock\n");
898 if (sc->soc->cml_clk) {
899 rv = clk_enable(sc->clk_cml);
901 device_printf(sc->dev, "Cannot enable 'cml' clock\n");
905 rv = clk_enable(sc->clk_pll_e);
907 device_printf(sc->dev, "Cannot enable 'pll_e' clock\n");
914 static struct tegra_pcib_port *
915 tegra_pcib_parse_port(struct tegra_pcib_softc *sc, phandle_t node)
917 struct tegra_pcib_port *port;
922 port = malloc(sizeof(struct tegra_pcib_port), M_DEVBUF, M_WAITOK);
924 rv = OF_getprop(node, "status", tmpstr, sizeof(tmpstr));
925 if (rv <= 0 || strcmp(tmpstr, "okay") == 0 ||
926 strcmp(tmpstr, "ok") == 0)
931 rv = OF_getencprop(node, "assigned-addresses", tmp, sizeof(tmp));
932 if (rv != sizeof(tmp)) {
933 device_printf(sc->dev, "Cannot parse assigned-address: %d\n",
937 port->rp_base_addr = tmp[2];
938 port->rp_size = tmp[4];
939 port->port_idx = OFW_PCI_PHYS_HI_DEVICE(tmp[0]) - 1;
940 if (port->port_idx >= TEGRA_PCIB_MAX_PORTS) {
941 device_printf(sc->dev, "Invalid port index: %d\n",
946 * Implement proper function for parsing pci "reg" property:
947 * - it have PCI bus format
948 * - its relative to matching "assigned-addresses"
950 rv = OF_getencprop(node, "reg", tmp, sizeof(tmp));
951 if (rv != sizeof(tmp)) {
952 device_printf(sc->dev, "Cannot parse reg: %d\n", rv);
955 port->rp_base_addr += tmp[2];
957 rv = OF_getencprop(node, "nvidia,num-lanes", &port->num_lanes,
958 sizeof(port->num_lanes));
959 if (rv != sizeof(port->num_lanes)) {
960 device_printf(sc->dev, "Cannot parse nvidia,num-lanes: %d\n",
964 if (port->num_lanes > 4) {
965 device_printf(sc->dev, "Invalid nvidia,num-lanes: %d\n",
970 port->afi_pex_ctrl = tegra_pcib_pex_ctrl(sc, port->port_idx);
971 sc->lanes_cfg |= port->num_lanes << (4 * port->port_idx);
974 rv = phy_get_by_ofw_name(sc->dev, node, "pcie-0", &port->phy);
976 device_printf(sc->dev,
977 "Cannot get 'pcie-0' phy for port %d\n",
984 free(port, M_DEVBUF);
989 tegra_pcib_parse_fdt_resources(struct tegra_pcib_softc *sc, phandle_t node)
992 struct tegra_pcib_port *port;
996 for (i = 0; sc->soc->regulator_names[i] != NULL; i++) {
997 if (i >= nitems(sc->regulators)) {
998 device_printf(sc->dev,
999 "Too many regulators present in DT.\n");
1002 rv = regulator_get_by_ofw_property(sc->dev, 0,
1003 sc->soc->regulator_names[i], sc->regulators + i);
1005 device_printf(sc->dev,
1006 "Cannot get '%s' regulator\n",
1007 sc->soc->regulator_names[i]);
1013 rv = hwreset_get_by_ofw_name(sc->dev, 0, "pex", &sc->hwreset_pex);
1015 device_printf(sc->dev, "Cannot get 'pex' reset\n");
1018 rv = hwreset_get_by_ofw_name(sc->dev, 0, "afi", &sc->hwreset_afi);
1020 device_printf(sc->dev, "Cannot get 'afi' reset\n");
1023 rv = hwreset_get_by_ofw_name(sc->dev, 0, "pcie_x", &sc->hwreset_pcie_x);
1025 device_printf(sc->dev, "Cannot get 'pcie_x' reset\n");
1030 rv = clk_get_by_ofw_name(sc->dev, 0, "pex", &sc->clk_pex);
1032 device_printf(sc->dev, "Cannot get 'pex' clock\n");
1035 rv = clk_get_by_ofw_name(sc->dev, 0, "afi", &sc->clk_afi);
1037 device_printf(sc->dev, "Cannot get 'afi' clock\n");
1040 rv = clk_get_by_ofw_name(sc->dev, 0, "pll_e", &sc->clk_pll_e);
1042 device_printf(sc->dev, "Cannot get 'pll_e' clock\n");
1045 if (sc->soc->cml_clk) {
1046 rv = clk_get_by_ofw_name(sc->dev, 0, "cml", &sc->clk_cml);
1048 device_printf(sc->dev, "Cannot get 'cml' clock\n");
1055 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
1056 port = tegra_pcib_parse_port(sc, child);
1058 device_printf(sc->dev, "Cannot parse PCIe port node\n");
1061 sc->ports[sc->num_ports++] = port;
1068 tegra_pcib_decode_ranges(struct tegra_pcib_softc *sc,
1069 struct ofw_pci_range *ranges, int nranges)
1073 for (i = 2; i < nranges; i++) {
1074 if ((ranges[i].pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) ==
1075 OFW_PCI_PHYS_HI_SPACE_IO) {
1076 if (sc->io_range.size != 0) {
1077 device_printf(sc->dev,
1078 "Duplicated IO range found in DT\n");
1081 sc->io_range = ranges[i];
1083 if (((ranges[i].pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) ==
1084 OFW_PCI_PHYS_HI_SPACE_MEM32)) {
1085 if (ranges[i].pci_hi & OFW_PCI_PHYS_HI_PREFETCHABLE) {
1086 if (sc->pref_mem_range.size != 0) {
1087 device_printf(sc->dev,
1088 "Duplicated memory range found "
1092 sc->pref_mem_range = ranges[i];
1094 if (sc->mem_range.size != 0) {
1095 device_printf(sc->dev,
1096 "Duplicated memory range found "
1100 sc->mem_range = ranges[i];
1104 if ((sc->io_range.size == 0) || (sc->mem_range.size == 0)
1105 || (sc->pref_mem_range.size == 0)) {
1106 device_printf(sc->dev,
1107 " Not all required ranges are found in DT\n");
1117 tegra_pcib_wait_for_link(struct tegra_pcib_softc *sc,
1118 struct tegra_pcib_port *port)
1123 /* Setup link detection. */
1124 reg = tegra_pcib_read_config(sc->dev, 0, port->port_idx, 0,
1126 reg &= ~RP_PRIV_MISC_PRSNT_MAP_EP_ABSNT;
1127 reg |= RP_PRIV_MISC_PRSNT_MAP_EP_PRSNT;
1128 tegra_pcib_write_config(sc->dev, 0, port->port_idx, 0,
1129 RP_PRIV_MISC, reg, 4);
1131 for (i = TEGRA_PCIE_LINKUP_TIMEOUT; i > 0; i--) {
1132 reg = tegra_pcib_read_config(sc->dev, 0, port->port_idx, 0,
1134 if (reg & RP_VEND_XP_DL_UP)
1141 for (i = TEGRA_PCIE_LINKUP_TIMEOUT; i > 0; i--) {
1142 reg = tegra_pcib_read_config(sc->dev, 0, port->port_idx, 0,
1143 RP_LINK_CONTROL_STATUS, 4);
1144 if (reg & RP_LINK_CONTROL_STATUS_DL_LINK_ACTIVE)
1155 tegra_pcib_port_enable(struct tegra_pcib_softc *sc, int port_num)
1157 struct tegra_pcib_port *port;
1161 port = sc->ports[port_num];
1163 /* Put port to reset. */
1164 reg = AFI_RD4(sc, port->afi_pex_ctrl);
1165 reg &= ~AFI_PEX_CTRL_RST_L;
1166 AFI_WR4(sc, port->afi_pex_ctrl, reg);
1167 AFI_RD4(sc, port->afi_pex_ctrl);
1170 /* Enable clocks. */
1171 reg |= AFI_PEX_CTRL_REFCLK_EN;
1172 reg |= AFI_PEX_CTRL_CLKREQ_EN;
1173 reg |= AFI_PEX_CTRL_OVERRIDE_EN;
1174 AFI_WR4(sc, port->afi_pex_ctrl, reg);
1175 AFI_RD4(sc, port->afi_pex_ctrl);
1178 /* Release reset. */
1179 reg |= AFI_PEX_CTRL_RST_L;
1180 AFI_WR4(sc, port->afi_pex_ctrl, reg);
1182 if (sc->soc->pca_enable) {
1183 reg = tegra_pcib_read_config(sc->dev, 0, port->port_idx, 0,
1185 reg |= RP_VEND_CTL2_PCA_ENABLE;
1186 tegra_pcib_write_config(sc->dev, 0, port->port_idx, 0,
1187 RP_VEND_CTL2, reg, 4);
1190 rv = tegra_pcib_wait_for_link(sc, port);
1192 device_printf(sc->dev, " port %d (%d lane%s): Link is %s\n",
1193 port->port_idx, port->num_lanes,
1194 port->num_lanes > 1 ? "s": "",
1195 rv == 0 ? "up": "down");
1199 tegra_pcib_port_disable(struct tegra_pcib_softc *sc, uint32_t port_num)
1201 struct tegra_pcib_port *port;
1204 port = sc->ports[port_num];
1206 /* Put port to reset. */
1207 reg = AFI_RD4(sc, port->afi_pex_ctrl);
1208 reg &= ~AFI_PEX_CTRL_RST_L;
1209 AFI_WR4(sc, port->afi_pex_ctrl, reg);
1210 AFI_RD4(sc, port->afi_pex_ctrl);
1213 /* Disable clocks. */
1214 reg &= ~AFI_PEX_CTRL_CLKREQ_EN;
1215 reg &= ~AFI_PEX_CTRL_REFCLK_EN;
1216 AFI_WR4(sc, port->afi_pex_ctrl, reg);
1219 device_printf(sc->dev, " port %d (%d lane%s): Disabled\n",
1220 port->port_idx, port->num_lanes,
1221 port->num_lanes > 1 ? "s": "");
1225 tegra_pcib_set_bar(struct tegra_pcib_softc *sc, int bar, uint32_t axi,
1226 uint64_t fpci, uint32_t size, int is_memory)
1232 axi_reg = axi & ~0xFFF;
1233 size_reg = size >> 12;
1234 fpci_reg = (uint32_t)(fpci >> 8) & ~0xF;
1235 fpci_reg |= is_memory ? 0x1 : 0x0;
1236 AFI_WR4(sc, bars[bar].axi_start, axi_reg);
1237 AFI_WR4(sc, bars[bar].size, size_reg);
1238 AFI_WR4(sc, bars[bar].fpci_start, fpci_reg);
1242 tegra_pcib_enable(struct tegra_pcib_softc *sc)
1248 rv = tegra_pcib_enable_fdt_resources(sc);
1250 device_printf(sc->dev, "Cannot enable FDT resources\n");
1254 /* Enable PLLE control. */
1255 reg = AFI_RD4(sc, AFI_PLLE_CONTROL);
1256 reg &= ~AFI_PLLE_CONTROL_BYPASS_PADS2PLLE_CONTROL;
1257 reg |= AFI_PLLE_CONTROL_PADS2PLLE_CONTROL_EN;
1258 AFI_WR4(sc, AFI_PLLE_CONTROL, reg);
1261 AFI_WR4(sc, AFI_PEXBIAS_CTRL, 0);
1263 /* Configure mode and ports. */
1264 reg = AFI_RD4(sc, AFI_PCIE_CONFIG);
1265 reg &= ~AFI_PCIE_CONFIG_SM2TMS0_XBAR_CONFIG_MASK;
1266 if (sc->lanes_cfg == 0x14) {
1268 device_printf(sc->dev,
1269 "Using x1,x4 configuration\n");
1270 reg |= AFI_PCIE_CONFIG_SM2TMS0_XBAR_CONFIG_XBAR4_1;
1271 } else if (sc->lanes_cfg == 0x12) {
1273 device_printf(sc->dev,
1274 "Using x1,x2 configuration\n");
1275 reg |= AFI_PCIE_CONFIG_SM2TMS0_XBAR_CONFIG_XBAR2_1;
1277 device_printf(sc->dev,
1278 "Unsupported lanes configuration: 0x%X\n", sc->lanes_cfg);
1280 reg |= AFI_PCIE_CONFIG_PCIE_DISABLE_ALL;
1281 for (i = 0; i < TEGRA_PCIB_MAX_PORTS; i++) {
1282 if ((sc->ports[i] != NULL))
1284 ~AFI_PCIE_CONFIG_PCIE_DISABLE(sc->ports[i]->port_idx);
1286 AFI_WR4(sc, AFI_PCIE_CONFIG, reg);
1288 /* Enable Gen2 support. */
1289 reg = AFI_RD4(sc, AFI_FUSE);
1290 reg &= ~AFI_FUSE_PCIE_T0_GEN2_DIS;
1291 AFI_WR4(sc, AFI_FUSE, reg);
1293 for (i = 0; i < TEGRA_PCIB_MAX_PORTS; i++) {
1294 if (sc->ports[i] != NULL) {
1295 rv = phy_enable(sc->ports[i]->phy);
1297 device_printf(sc->dev,
1298 "Cannot enable phy for port %d\n",
1299 sc->ports[i]->port_idx);
1305 /* Configure PCIe reference clock */
1306 PADS_WR4(sc, PADS_REFCLK_CFG0, sc->soc->pads_refclk_cfg0);
1307 if (sc->num_ports > 2)
1308 PADS_WR4(sc, PADS_REFCLK_CFG1, sc->soc->pads_refclk_cfg1);
1310 rv = hwreset_deassert(sc->hwreset_pcie_x);
1312 device_printf(sc->dev, "Cannot unreset 'pci_x' reset\n");
1316 /* Enable config space. */
1317 reg = AFI_RD4(sc, AFI_CONFIGURATION);
1318 reg |= AFI_CONFIGURATION_EN_FPCI;
1319 AFI_WR4(sc, AFI_CONFIGURATION, reg);
1321 /* Enable AFI errors. */
1323 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_INI_SLVERR);
1324 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_INI_DECERR);
1325 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_TGT_SLVERR);
1326 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_TGT_DECERR);
1327 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_TGT_WRERR);
1328 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_SM_MSG);
1329 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_DFPCI_DECERR);
1330 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_AXI_DECERR);
1331 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_FPCI_TIMEOUT);
1332 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_PE_PRSNT_SENSE);
1333 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_PE_CLKREQ_SENSE);
1334 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_CLKCLAMP_SENSE);
1335 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_RDY4PD_SENSE);
1336 reg |= AFI_AFI_INTR_ENABLE_CODE(AFI_INTR_CODE_INT_CODE_P2P_ERROR);
1337 AFI_WR4(sc, AFI_AFI_INTR_ENABLE, reg);
1338 AFI_WR4(sc, AFI_SM_INTR_ENABLE, 0xffffffff);
1340 /* Enable INT, disable MSI. */
1341 AFI_WR4(sc, AFI_INTR_MASK, AFI_INTR_MASK_INT_MASK);
1343 /* Mask all FPCI errors. */
1344 AFI_WR4(sc, AFI_FPCI_ERROR_MASKS, 0);
1346 /* Setup AFI translation windows. */
1347 /* BAR 0 - type 1 extended configuration. */
1348 tegra_pcib_set_bar(sc, 0, rman_get_start(sc->cfg_mem_res),
1349 FPCI_MAP_EXT_TYPE1_CONFIG, rman_get_size(sc->cfg_mem_res), 0);
1351 /* BAR 1 - downstream I/O. */
1352 tegra_pcib_set_bar(sc, 1, sc->io_range.host, FPCI_MAP_IO,
1353 sc->io_range.size, 0);
1355 /* BAR 2 - downstream prefetchable memory 1:1. */
1356 tegra_pcib_set_bar(sc, 2, sc->pref_mem_range.host,
1357 sc->pref_mem_range.host, sc->pref_mem_range.size, 1);
1359 /* BAR 3 - downstream not prefetchable memory 1:1 .*/
1360 tegra_pcib_set_bar(sc, 3, sc->mem_range.host,
1361 sc->mem_range.host, sc->mem_range.size, 1);
1363 /* BAR 3-8 clear. */
1364 tegra_pcib_set_bar(sc, 4, 0, 0, 0, 0);
1365 tegra_pcib_set_bar(sc, 5, 0, 0, 0, 0);
1366 tegra_pcib_set_bar(sc, 6, 0, 0, 0, 0);
1367 tegra_pcib_set_bar(sc, 7, 0, 0, 0, 0);
1368 tegra_pcib_set_bar(sc, 8, 0, 0, 0, 0);
1370 /* MSI BAR - clear. */
1371 tegra_pcib_set_bar(sc, 9, 0, 0, 0, 0);
1375 #ifdef TEGRA_PCIB_MSI_ENABLE
1377 tegra_pcib_attach_msi(device_t dev)
1379 struct tegra_pcib_softc *sc;
1383 sc = device_get_softc(dev);
1385 sc->msi_page = (uintptr_t)kmem_alloc_contig(PAGE_SIZE, M_WAITOK, 0,
1386 BUS_SPACE_MAXADDR, PAGE_SIZE, 0, VM_MEMATTR_DEFAULT);
1389 tegra_pcib_set_bar(sc, 9, vtophys(sc->msi_page), vtophys(sc->msi_page),
1392 /* Disable and clear all interrupts. */
1393 for (i = 0; i < AFI_MSI_REGS; i++) {
1394 AFI_WR4(sc, AFI_MSI_EN_VEC(i), 0);
1395 AFI_WR4(sc, AFI_MSI_VEC(i), 0xFFFFFFFF);
1397 rv = bus_setup_intr(dev, sc->msi_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
1398 tegra_pcib_msi_intr, NULL, sc, &sc->msi_intr_cookie);
1400 device_printf(dev, "cannot setup MSI interrupt handler\n");
1405 if (tegra_pcib_msi_attach(sc) != 0) {
1406 device_printf(dev, "WARNING: unable to attach PIC\n");
1407 tegra_pcib_msi_detach(sc);
1411 /* Unmask MSI interrupt. */
1412 reg = AFI_RD4(sc, AFI_INTR_MASK);
1413 reg |= AFI_INTR_MASK_MSI_MASK;
1414 AFI_WR4(sc, AFI_INTR_MASK, reg);
1422 tegra_pcib_probe(device_t dev)
1424 if (!ofw_bus_status_okay(dev))
1427 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data != 0) {
1428 device_set_desc(dev, "Nvidia Integrated PCI/PCI-E Controller");
1429 return (BUS_PROBE_DEFAULT);
1435 tegra_pcib_attach(device_t dev)
1437 struct tegra_pcib_softc *sc;
1441 struct tegra_pcib_port *port;
1444 sc = device_get_softc(dev);
1446 mtx_init(&sc->mtx, "msi_mtx", NULL, MTX_DEF);
1448 node = ofw_bus_get_node(dev);
1449 sc->soc = (struct pcie_soc *)ofw_bus_search_compatible(dev,
1450 compat_data)->ocd_data;
1452 rv = tegra_pcib_parse_fdt_resources(sc, node);
1454 device_printf(dev, "Cannot get FDT resources\n");
1458 /* Allocate bus_space resources. */
1460 sc->pads_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1462 if (sc->pads_mem_res == NULL) {
1463 device_printf(dev, "Cannot allocate PADS register\n");
1469 * tag for config space is not filled when RF_ALLOCATED flag is used.
1471 sc->bus_tag = rman_get_bustag(sc->pads_mem_res);
1474 sc->afi_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1476 if (sc->afi_mem_res == NULL) {
1477 device_printf(dev, "Cannot allocate AFI register\n");
1483 sc->cfg_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1485 if (sc->cfg_mem_res == NULL) {
1486 device_printf(dev, "Cannot allocate config space memory\n");
1490 sc->cfg_base_addr = rman_get_start(sc->cfg_mem_res);
1493 for (i = 0; i < TEGRA_PCIB_MAX_PORTS; i++) {
1494 if (sc->ports[i] == NULL)
1496 port = sc->ports[i];
1497 rv = bus_space_map(sc->bus_tag, port->rp_base_addr,
1498 port->rp_size, 0, &port->cfg_handle);
1500 device_printf(sc->dev, "Cannot allocate memory for "
1511 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
1512 RF_ACTIVE | RF_SHAREABLE);
1513 if (sc->irq_res == NULL) {
1514 device_printf(dev, "Cannot allocate IRQ resources\n");
1520 sc->msi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
1522 if (sc->irq_res == NULL) {
1523 device_printf(dev, "Cannot allocate MSI IRQ resources\n");
1528 sc->ofw_pci.sc_range_mask = 0x3;
1529 rv = ofw_pcib_init(dev);
1533 rv = tegra_pcib_decode_ranges(sc, sc->ofw_pci.sc_range,
1534 sc->ofw_pci.sc_nrange);
1538 if (bus_setup_intr(dev, sc->irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
1539 tegra_pci_intr, NULL, sc, &sc->intr_cookie)) {
1540 device_printf(dev, "cannot setup interrupt handler\n");
1546 * Enable PCIE device.
1548 rv = tegra_pcib_enable(sc);
1551 for (i = 0; i < TEGRA_PCIB_MAX_PORTS; i++) {
1552 if (sc->ports[i] == NULL)
1554 if (sc->ports[i]->enabled)
1555 tegra_pcib_port_enable(sc, i);
1557 tegra_pcib_port_disable(sc, i);
1560 #ifdef TEGRA_PCIB_MSI_ENABLE
1561 rv = tegra_pcib_attach_msi(dev);
1565 device_add_child(dev, "pci", -1);
1567 return (bus_generic_attach(dev));
1574 static device_method_t tegra_pcib_methods[] = {
1575 /* Device interface */
1576 DEVMETHOD(device_probe, tegra_pcib_probe),
1577 DEVMETHOD(device_attach, tegra_pcib_attach),
1580 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
1581 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
1583 /* pcib interface */
1584 DEVMETHOD(pcib_maxslots, tegra_pcib_maxslots),
1585 DEVMETHOD(pcib_read_config, tegra_pcib_read_config),
1586 DEVMETHOD(pcib_write_config, tegra_pcib_write_config),
1587 DEVMETHOD(pcib_route_interrupt, tegra_pcib_route_interrupt),
1588 DEVMETHOD(pcib_alloc_msi, tegra_pcib_alloc_msi),
1589 DEVMETHOD(pcib_release_msi, tegra_pcib_release_msi),
1590 DEVMETHOD(pcib_map_msi, tegra_pcib_map_msi),
1591 DEVMETHOD(pcib_request_feature, pcib_request_feature_allow),
1593 #ifdef TEGRA_PCIB_MSI_ENABLE
1595 DEVMETHOD(msi_alloc_msi, tegra_pcib_msi_alloc_msi),
1596 DEVMETHOD(msi_release_msi, tegra_pcib_msi_release_msi),
1597 DEVMETHOD(msi_map_msi, tegra_pcib_msi_map_msi),
1599 /* Interrupt controller interface */
1600 DEVMETHOD(pic_disable_intr, tegra_pcib_msi_disable_intr),
1601 DEVMETHOD(pic_enable_intr, tegra_pcib_msi_enable_intr),
1602 DEVMETHOD(pic_setup_intr, tegra_pcib_msi_setup_intr),
1603 DEVMETHOD(pic_teardown_intr, tegra_pcib_msi_teardown_intr),
1604 DEVMETHOD(pic_post_filter, tegra_pcib_msi_post_filter),
1605 DEVMETHOD(pic_post_ithread, tegra_pcib_msi_post_ithread),
1606 DEVMETHOD(pic_pre_ithread, tegra_pcib_msi_pre_ithread),
1609 /* OFW bus interface */
1610 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
1611 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
1612 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
1613 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
1614 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
1619 DEFINE_CLASS_1(pcib, tegra_pcib_driver, tegra_pcib_methods,
1620 sizeof(struct tegra_pcib_softc), ofw_pcib_driver);
1621 DRIVER_MODULE(tegra_pcib, simplebus, tegra_pcib_driver, NULL, NULL);