svn commit: r331402 - in stable/11/sys/arm: conf versatile
Oleksandr Tymoshenko
gonzo at FreeBSD.org
Fri Mar 23 01:37:33 UTC 2018
Author: gonzo
Date: Fri Mar 23 01:37:31 2018
New Revision: 331402
URL: https://svnweb.freebsd.org/changeset/base/331402
Log:
MFC r316370-r316371
r316370:
[versatilepb] Convert VERSATILEPB kernel to INTRNG and switch to upstream DTB
Scope of this change is somewhat larger than just converting to INTRNG.
The reason for this is that INTRNG support required switching from custom
to upstream DTS because custom DTS didn't have interrup routing information.
This switch caused rewrite of PCI and CLCD drivers and adding SCM module.
List of changes in this commit:
- Enable INTRNG and switch to versatile-pb.dts
- Add SCM driver that controls various peripheral devices like LCD or
PCI controller. Previously registers required for power-up and
configuring peripherals were part of their respective nodes. Upstream
DTS has dedicated node for SCM
- Convert PL190 driver to INTRNG
- Convert Versatile SIC (secondary interrupt controller) to INTRNG
- Refactor CLCD driver to use SCM API to power up and configuration
- Refactor PCI driver to use SCM API to enable controller
- Refactor PCI driver to use interrupt map provided in DTS for
interrupt routing. As a result it fixes broken IRQ routing and
it's no longer required to run QEMU with "-global versatile_pci.broken-irq-mapping=1"
command-line arguments
r316371:
[versatilepb] Fix keyboard driver after switching to upstream DTS
FreeBSD's DTS contained only one PL050 node and driver considered it to
be PS/2 keyboard. In reality PL050 is a PS/2 port that pushes bytes to/from
the periphers connected to it. New DTS contains two nodes and QEMU emulates
keyboard connected to port #0 and mouse connected to port #1. Since there
is no way to say what's connected to port by checking DTS we hardcode
this knowledge in the driver: it assumes keyboard on port #0 and ignores
port #1 altogether.
Also QEMU defaults emulated keyboard to scan code set 2 while driver used
to work with scan code set 1 so when initializing driver make sure keyboard
is switched to scan code set 1
Added:
stable/11/sys/arm/versatile/versatile_scm.c
- copied unchanged from r316371, head/sys/arm/versatile/versatile_scm.c
stable/11/sys/arm/versatile/versatile_scm.h
- copied unchanged from r316371, head/sys/arm/versatile/versatile_scm.h
Modified:
stable/11/sys/arm/conf/VERSATILEPB
stable/11/sys/arm/versatile/files.versatile
stable/11/sys/arm/versatile/pl050.c
stable/11/sys/arm/versatile/versatile_clcd.c
stable/11/sys/arm/versatile/versatile_pci.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/arm/conf/VERSATILEPB
==============================================================================
--- stable/11/sys/arm/conf/VERSATILEPB Fri Mar 23 00:40:08 2018 (r331401)
+++ stable/11/sys/arm/conf/VERSATILEPB Fri Mar 23 01:37:31 2018 (r331402)
@@ -68,7 +68,9 @@ makeoptions SC_DFLT_FONT=cp437
device md
device random # Entropy device
+options INTRNG
+
# Flattened Device Tree
options FDT # Configure using FDT/DTB data
options FDT_DTB_STATIC
-makeoptions FDT_DTS_FILE=versatilepb.dts
+makeoptions FDT_DTS_FILE=versatile-pb.dts
Modified: stable/11/sys/arm/versatile/files.versatile
==============================================================================
--- stable/11/sys/arm/versatile/files.versatile Fri Mar 23 00:40:08 2018 (r331401)
+++ stable/11/sys/arm/versatile/files.versatile Fri Mar 23 01:37:31 2018 (r331402)
@@ -6,6 +6,7 @@ arm/versatile/versatile_machdep.c standard
arm/versatile/versatile_clcd.c optional sc
arm/versatile/versatile_common.c standard
arm/versatile/versatile_pci.c optional pci
+arm/versatile/versatile_scm.c standard
arm/versatile/versatile_sic.c standard
arm/versatile/versatile_timer.c standard
Modified: stable/11/sys/arm/versatile/pl050.c
==============================================================================
--- stable/11/sys/arm/versatile/pl050.c Fri Mar 23 00:40:08 2018 (r331401)
+++ stable/11/sys/arm/versatile/pl050.c Fri Mar 23 01:37:31 2018 (r331402)
@@ -109,7 +109,10 @@ __FBSDID("$FreeBSD$");
#define KMI_DRIVER_NAME "kmi"
#define KMI_NFKEY (sizeof(fkey_tab)/sizeof(fkey_tab[0])) /* units */
+#define SET_SCANCODE_SET 0xf0
+
struct kmi_softc {
+ device_t sc_dev;
keyboard_t sc_kbd;
keymap_t sc_keymap;
accentmap_t sc_accmap;
@@ -145,6 +148,8 @@ static int kmi_ioctl(keyboard_t *, u_long, caddr_t);
static int kmi_enable(keyboard_t *);
static int kmi_disable(keyboard_t *);
+static int kmi_attached = 0;
+
/* early keyboard probe, not supported */
static int
kmi_configure(int flags)
@@ -483,7 +488,6 @@ kmi_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
}
}
-
/* clear the internal state of the keyboard */
static void
kmi_clear_state(keyboard_t *kbd)
@@ -613,6 +617,17 @@ pl050_kmi_probe(device_t dev)
if (!ofw_bus_status_okay(dev))
return (ENXIO);
+ /*
+ * PL050 is plain PS2 port that pushes bytes to/from computer
+ * VersatilePB has two such ports and QEMU simulates keyboard
+ * connected to port #0 and mouse connected to port #1. This
+ * information can't be obtained from device tree so we just
+ * hardcode this knowledge here. We attach keyboard driver to
+ * port #0 and ignore port #1
+ */
+ if (kmi_attached)
+ return (ENXIO);
+
if (ofw_bus_is_compatible(dev, "arm,pl050")) {
device_set_desc(dev, "PL050 Keyboard/Mouse Interface");
return (BUS_PROBE_DEFAULT);
@@ -628,7 +643,9 @@ pl050_kmi_attach(device_t dev)
keyboard_t *kbd;
int rid;
int i;
+ uint32_t ack;
+ sc->sc_dev = dev;
kbd = &sc->sc_kbd;
rid = 0;
@@ -657,6 +674,16 @@ pl050_kmi_attach(device_t dev)
/* TODO: clock & divisor */
+ pl050_kmi_write_4(sc, KMICR, KMICR_EN);
+
+ pl050_kmi_write_4(sc, KMIDATA, SET_SCANCODE_SET);
+ /* read out ACK */
+ ack = pl050_kmi_read_4(sc, KMIDATA);
+ /* Set Scan Code set 1 (XT) */
+ pl050_kmi_write_4(sc, KMIDATA, 1);
+ /* read out ACK */
+ ack = pl050_kmi_read_4(sc, KMIDATA);
+
pl050_kmi_write_4(sc, KMICR, KMICR_EN | KMICR_RXINTREN);
kbd_init_struct(kbd, KMI_DRIVER_NAME, KB_OTHER,
@@ -692,6 +719,7 @@ pl050_kmi_attach(device_t dev)
if (bootverbose) {
genkbd_diag(kbd, bootverbose);
}
+ kmi_attached = 1;
return (0);
detach:
Modified: stable/11/sys/arm/versatile/versatile_clcd.c
==============================================================================
--- stable/11/sys/arm/versatile/versatile_clcd.c Fri Mar 23 00:40:08 2018 (r331401)
+++ stable/11/sys/arm/versatile/versatile_clcd.c Fri Mar 23 01:37:31 2018 (r331402)
@@ -1,7 +1,7 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
- * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo at freebsd.org>
+ * Copyright (c) 2012-2017 Oleksandr Tymoshenko <gonzo at freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -52,22 +52,12 @@ __FBSDID("$FreeBSD$");
#include <dev/fb/fbreg.h>
#include <dev/syscons/syscons.h>
+#include <arm/versatile/versatile_scm.h>
+
#include <machine/bus.h>
#define PL110_VENDOR_ARM926PXP 1
-#define MEM_SYS 0
-#define MEM_CLCD 1
-#define MEM_REGIONS 2
-
-#define SYS_CLCD 0x00
-#define SYS_CLCD_CLCDID_SHIFT 0x08
-#define SYS_CLCD_CLCDID_MASK 0x1f
-#define SYS_CLCD_PWR3V5VSWITCH (1 << 4)
-#define SYS_CLCD_VDDPOSSWITCH (1 << 3)
-#define SYS_CLCD_NLCDIOON (1 << 2)
-#define SYS_CLCD_LCD_MODE_MASK 0x03
-
#define CLCD_MODE_RGB888 0x0
#define CLCD_MODE_RGB555 0x01
#define CLCD_MODE_RBG565 0x02
@@ -122,18 +112,13 @@ __FBSDID("$FreeBSD$");
#define dprintf(fmt, args...)
#endif
-#define versatile_clcdc_sys_read_4(sc, reg) \
- bus_read_4((sc)->mem_res[MEM_SYS], (reg))
-#define versatile_clcdc_sys_write_4(sc, reg, val) \
- bus_write_4((sc)->mem_res[MEM_SYS], (reg), (val))
-
#define versatile_clcdc_read_4(sc, reg) \
- bus_read_4((sc)->mem_res[MEM_CLCD], (reg))
+ bus_read_4((sc)->mem_res, (reg))
#define versatile_clcdc_write_4(sc, reg, val) \
- bus_write_4((sc)->mem_res[MEM_CLCD], (reg), (val))
+ bus_write_4((sc)->mem_res, (reg), (val))
struct versatile_clcdc_softc {
- struct resource* mem_res[MEM_REGIONS];
+ struct resource* mem_res;
struct mtx mtx;
@@ -208,12 +193,6 @@ static u_char mouse_pointer[16] = {
static struct video_adapter_softc va_softc;
-static struct resource_spec versatile_clcdc_mem_spec[] = {
- { SYS_RES_MEMORY, 0, RF_ACTIVE },
- { SYS_RES_MEMORY, 1, RF_ACTIVE },
- { -1, 0, 0 }
-};
-
static int versatilefb_configure(int);
static void versatilefb_update_margins(video_adapter_t *adp);
@@ -249,21 +228,25 @@ versatile_clcdc_attach(device_t dev)
{
struct versatile_clcdc_softc *sc = device_get_softc(dev);
struct video_adapter_softc *va_sc = &va_softc;
- int err;
+ int err, rid;
uint32_t reg;
int clcdid;
int dma_size;
/* Request memory resources */
- err = bus_alloc_resources(dev, versatile_clcdc_mem_spec,
- sc->mem_res);
- if (err) {
- device_printf(dev, "Error: could not allocate memory resources\n");
+ rid = 0;
+ sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
+ if (sc->mem_res == NULL) {
+ device_printf(dev, "could not allocate memory resources\n");
return (ENXIO);
}
- reg = versatile_clcdc_sys_read_4(sc, SYS_CLCD);
- clcdid = (reg >> SYS_CLCD_CLCDID_SHIFT) & SYS_CLCD_CLCDID_MASK;
+ err = versatile_scm_reg_read_4(SCM_CLCD, ®);
+ if (err) {
+ device_printf(dev, "failed to read SCM register\n");
+ goto fail;
+ }
+ clcdid = (reg >> SCM_CLCD_CLCDID_SHIFT) & SCM_CLCD_CLCDID_MASK;
switch (clcdid) {
case 31:
device_printf(dev, "QEMU VGA 640x480\n");
@@ -275,17 +258,17 @@ versatile_clcdc_attach(device_t dev)
goto fail;
}
- reg &= ~SYS_CLCD_LCD_MODE_MASK;
+ reg &= ~SCM_CLCD_LCD_MODE_MASK;
reg |= CLCD_MODE_RGB565;
sc->mode = CLCD_MODE_RGB565;
- versatile_clcdc_sys_write_4(sc, SYS_CLCD, reg);
- dma_size = sc->width*sc->height*2;
-
- /*
+ versatile_scm_reg_write_4(SCM_CLCD, reg);
+ dma_size = sc->width*sc->height*2;
+
+ /*
* Power on LCD
*/
- reg |= SYS_CLCD_PWR3V5VSWITCH | SYS_CLCD_NLCDIOON;
- versatile_clcdc_sys_write_4(sc, SYS_CLCD, reg);
+ reg |= SCM_CLCD_PWR3V5VSWITCH | SCM_CLCD_NLCDIOON;
+ versatile_scm_reg_write_4(SCM_CLCD, reg);
/*
* XXX: hardcoded timing for VGA. For other modes/panels
@@ -657,7 +640,6 @@ versatilefb_init(int unit, video_adapter_t *adp, int f
sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
-
adp->va_window = (vm_offset_t) versatilefb_static_window;
adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
Modified: stable/11/sys/arm/versatile/versatile_pci.c
==============================================================================
--- stable/11/sys/arm/versatile/versatile_pci.c Fri Mar 23 00:40:08 2018 (r331401)
+++ stable/11/sys/arm/versatile/versatile_pci.c Fri Mar 23 01:37:31 2018 (r331402)
@@ -1,7 +1,7 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
- * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo at freebsd.org>
+ * Copyright (c) 2012-2017 Oleksandr Tymoshenko <gonzo at freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -55,18 +55,18 @@ __FBSDID("$FreeBSD$");
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
+#include <dev/ofw/ofw_pci.h>
+#include <arm/versatile/versatile_scm.h>
+
#include <machine/bus.h>
#include <machine/fdt.h>
-#define MEM_SYS 0
-#define MEM_CORE 1
-#define MEM_BASE 2
-#define MEM_CONF_BASE 3
-#define MEM_REGIONS 4
+#define MEM_CORE 0
+#define MEM_BASE 1
+#define MEM_CONF_BASE 2
+#define MEM_REGIONS 3
-#define SYS_PCICTL 0x00
-
#define PCI_CORE_IMAP0 0x00
#define PCI_CORE_IMAP1 0x04
#define PCI_CORE_IMAP2 0x08
@@ -95,12 +95,6 @@ __FBSDID("$FreeBSD$");
#define dprintf(fmt, args...)
#endif
-
-#define versatile_pci_sys_read_4(reg) \
- bus_read_4(sc->mem_res[MEM_SYS], (reg))
-#define versatile_pci_sys_write_4(reg, val) \
- bus_write_4(sc->mem_res[MEM_SYS], (reg), (val))
-
#define versatile_pci_core_read_4(reg) \
bus_read_4(sc->mem_res[MEM_CORE], (reg))
#define versatile_pci_core_write_4(reg, val) \
@@ -134,13 +128,13 @@ struct versatile_pci_softc {
struct rman mem_rman;
struct mtx mtx;
+ struct ofw_bus_iinfo pci_iinfo;
};
static struct resource_spec versatile_pci_mem_spec[] = {
{ SYS_RES_MEMORY, 0, RF_ACTIVE },
{ SYS_RES_MEMORY, 1, RF_ACTIVE },
{ SYS_RES_MEMORY, 2, RF_ACTIVE },
- { SYS_RES_MEMORY, 3, RF_ACTIVE },
{ -1, 0, 0 }
};
@@ -151,7 +145,7 @@ versatile_pci_probe(device_t dev)
if (!ofw_bus_status_okay(dev))
return (ENXIO);
- if (ofw_bus_is_compatible(dev, "versatile,pci")) {
+ if (ofw_bus_is_compatible(dev, "arm,versatile-pci")) {
device_set_desc(dev, "Versatile PCI controller");
return (BUS_PROBE_DEFAULT);
}
@@ -167,7 +161,10 @@ versatile_pci_attach(device_t dev)
int slot;
uint32_t vendordev_id, class_id;
uint32_t val;
+ phandle_t node;
+ node = ofw_bus_get_node(dev);
+
/* Request memory resources */
err = bus_alloc_resources(dev, versatile_pci_mem_spec,
sc->mem_res);
@@ -191,7 +188,7 @@ versatile_pci_attach(device_t dev)
versatile_pci_core_write_4(PCI_CORE_SMAP1, (PCI_NPREFETCH_WINDOW >> 28));
versatile_pci_core_write_4(PCI_CORE_SMAP2, (PCI_NPREFETCH_WINDOW >> 28));
- versatile_pci_sys_write_4(SYS_PCICTL, 1);
+ versatile_scm_reg_write_4(SCM_PCICTL, 1);
for (slot = 0; slot <= PCI_SLOTMAX; slot++) {
vendordev_id = versatile_pci_read_4((slot << 11) + PCIR_DEVVENDOR);
@@ -268,6 +265,8 @@ versatile_pci_attach(device_t dev)
versatile_pci_conf_write_4((slot << 11) + PCIR_COMMAND, val);
}
+ ofw_bus_setup_iinfo(node, &sc->pci_iinfo, sizeof(cell_t));
+
device_add_child(dev, "pci", -1);
return (bus_generic_attach(dev));
}
@@ -321,7 +320,7 @@ versatile_pci_alloc_resource(device_t bus, device_t ch
rm = &sc->io_rman;
break;
case SYS_RES_IRQ:
- rm = &sc->irq_rman;
+ rm = NULL;
break;
case SYS_RES_MEMORY:
rm = &sc->mem_rman;
@@ -330,8 +329,11 @@ versatile_pci_alloc_resource(device_t bus, device_t ch
return (NULL);
}
- rv = rman_reserve_resource(rm, start, end, count, flags, child);
+ if (rm == NULL)
+ return (BUS_ALLOC_RESOURCE(device_get_parent(bus),
+ child, type, rid, start, end, count, flags));
+ rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == NULL)
return (NULL);
@@ -392,8 +394,6 @@ versatile_pci_teardown_intr(device_t dev, device_t chi
return BUS_TEARDOWN_INTR(device_get_parent(dev), dev, ires, cookie);
}
-
-
static int
versatile_pci_maxslots(device_t dev)
{
@@ -402,10 +402,33 @@ versatile_pci_maxslots(device_t dev)
}
static int
-versatile_pci_route_interrupt(device_t pcib, device_t device, int pin)
+versatile_pci_route_interrupt(device_t bus, device_t dev, int pin)
{
+ struct versatile_pci_softc *sc;
+ struct ofw_pci_register reg;
+ uint32_t pintr, mintr[4];
+ phandle_t iparent;
+ int intrcells;
- return (27 + ((pci_get_slot(device) + pin - 1) & 3));
+ sc = device_get_softc(bus);
+ pintr = pin;
+
+ bzero(®, sizeof(reg));
+ reg.phys_hi = (pci_get_bus(dev) << OFW_PCI_PHYS_HI_BUSSHIFT) |
+ (pci_get_slot(dev) << OFW_PCI_PHYS_HI_DEVICESHIFT) |
+ (pci_get_function(dev) << OFW_PCI_PHYS_HI_FUNCTIONSHIFT);
+
+ intrcells = ofw_bus_lookup_imap(ofw_bus_get_node(dev),
+ &sc->pci_iinfo, ®, sizeof(reg), &pintr, sizeof(pintr),
+ mintr, sizeof(mintr), &iparent);
+ if (intrcells) {
+ pintr = ofw_bus_map_intr(dev, iparent, intrcells, mintr);
+ return (pintr);
+ }
+
+ device_printf(bus, "could not route pin %d for device %d.%d\n",
+ pin, pci_get_slot(dev), pci_get_function(dev));
+ return (PCI_INVALID_IRQ);
}
static uint32_t
Copied: stable/11/sys/arm/versatile/versatile_scm.c (from r316371, head/sys/arm/versatile/versatile_scm.c)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/11/sys/arm/versatile/versatile_scm.c Fri Mar 23 01:37:31 2018 (r331402, copy of r316371, head/sys/arm/versatile/versatile_scm.c)
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2017 Oleksandr Tymoshenko <gonzo at freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Ben Gray.
+ * 4. The name of the company nor the name of the author may be used to
+ * endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BEN GRAY ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL BEN GRAY BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * SCM - System Control Module
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/resource.h>
+#include <sys/rman.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include "versatile_scm.h"
+
+struct versatile_scm_softc {
+ device_t sc_dev;
+ struct resource * sc_mem_res;
+};
+
+static struct versatile_scm_softc *versatile_scm_sc;
+
+#define versatile_scm_read_4(sc, reg) \
+ bus_read_4((sc)->sc_mem_res, (reg))
+#define versatile_scm_write_4(sc, reg, val) \
+ bus_write_4((sc)->sc_mem_res, (reg), (val))
+
+static int
+versatile_scm_probe(device_t dev)
+{
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (!ofw_bus_is_compatible(dev, "syscon"))
+ return (ENXIO);
+
+ if (versatile_scm_sc) {
+ return (EEXIST);
+ }
+
+ device_set_desc(dev, "Versatile Control Module");
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+versatile_scm_attach(device_t dev)
+{
+ struct versatile_scm_softc *sc;
+ int rid;
+
+ sc = device_get_softc(dev);
+ sc->sc_dev = dev;
+
+ rid = 0;
+ sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
+
+ if (sc->sc_mem_res == NULL) {
+ device_printf(dev, "could not allocate memory resources\n");
+ return (ENXIO);
+ }
+
+ versatile_scm_sc = sc;
+
+ return (0);
+}
+
+int
+versatile_scm_reg_read_4(uint32_t reg, uint32_t *val)
+{
+ if (!versatile_scm_sc)
+ return (ENXIO);
+
+ *val = versatile_scm_read_4(versatile_scm_sc, reg);
+ return (0);
+}
+
+int
+versatile_scm_reg_write_4(uint32_t reg, uint32_t val)
+{
+ if (!versatile_scm_sc)
+ return (ENXIO);
+
+ versatile_scm_write_4(versatile_scm_sc, reg, val);
+ return (0);
+}
+
+static device_method_t versatile_scm_methods[] = {
+ DEVMETHOD(device_probe, versatile_scm_probe),
+ DEVMETHOD(device_attach, versatile_scm_attach),
+
+ DEVMETHOD_END
+};
+
+static driver_t versatile_scm_driver = {
+ "scm",
+ versatile_scm_methods,
+ sizeof(struct versatile_scm_softc),
+};
+
+static devclass_t versatile_scm_devclass;
+
+EARLY_DRIVER_MODULE(versatile_scm, simplebus, versatile_scm_driver, versatile_scm_devclass, 0, 0,
+ BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
Copied: stable/11/sys/arm/versatile/versatile_scm.h (from r316371, head/sys/arm/versatile/versatile_scm.h)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/11/sys/arm/versatile/versatile_scm.h Fri Mar 23 01:37:31 2018 (r331402, copy of r316371, head/sys/arm/versatile/versatile_scm.h)
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2017 Oleksandr Tymoshenko <gonzo at freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Ben Gray.
+ * 4. The name of the company nor the name of the author may be used to
+ * endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BEN GRAY ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL BEN GRAY BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _VERSATILE_SCM_H_
+#define _VERSATILE_SCM_H_
+
+#define SCM_PCICTL 0x44
+#define SCM_CLCD 0x50
+#define SCM_CLCD_CLCDID_SHIFT 0x08
+#define SCM_CLCD_CLCDID_MASK 0x1f
+#define SCM_CLCD_PWR3V5VSWITCH (1 << 4)
+#define SCM_CLCD_VDDPOSSWITCH (1 << 3)
+#define SCM_CLCD_NLCDIOON (1 << 2)
+#define SCM_CLCD_LCD_MODE_MASK 0x03
+
+int versatile_scm_reg_read_4(uint32_t reg, uint32_t *val);
+int versatile_scm_reg_write_4(uint32_t reg, uint32_t val);
+
+#endif /* _VERSATILE_SCM_H_ */
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