Author: br
Date: Sat Sep 6 08:48:57 2014
New Revision: 271186
URL: http://svnweb.freebsd.org/changeset/base/271186
Log:
Add FPGA Manager driver. This driver allows to program FPGA core
from FreeBSD userspace running on ARM core.
Sponsored by: DARPA, AFRL
Added:
head/sys/arm/altera/socfpga/socfpga_common.h (contents, props changed)
head/sys/arm/altera/socfpga/socfpga_manager.c (contents, props changed)
Modified:
head/sys/arm/altera/socfpga/files.socfpga
head/sys/boot/fdt/dts/arm/socfpga.dtsi
Modified: head/sys/arm/altera/socfpga/files.socfpga
==============================================================================
--- head/sys/arm/altera/socfpga/files.socfpga Sat Sep 6 04:39:26 2014
(r271185)
+++ head/sys/arm/altera/socfpga/files.socfpga Sat Sep 6 08:48:57 2014
(r271186)
@@ -15,3 +15,4 @@ arm/arm/mpcore_timer.c standard
arm/altera/socfpga/socfpga_common.c standard
arm/altera/socfpga/socfpga_machdep.c standard
+arm/altera/socfpga/socfpga_manager.c standard
Added: head/sys/arm/altera/socfpga/socfpga_common.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/altera/socfpga/socfpga_common.h Sat Sep 6 08:48:57
2014 (r271186)
@@ -0,0 +1,44 @@
+/*-
+ * Copyright (c) 2014 Ruslan Bukin <b...@bsdpad.com>
+ * All rights reserved.
+ *
+ * This software was developed by SRI International and the University of
+ * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
+ * ("CTSRD"), as part of the DARPA CRASH research programme.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#define READ4(_sc, _reg) \
+ bus_space_read_4(_sc->bst, _sc->bsh, _reg)
+#define WRITE4(_sc, _reg, _val) \
+ bus_space_write_4(_sc->bst, _sc->bsh, _reg, _val)
+#define READ2(_sc, _reg) \
+ bus_space_read_2(_sc->bst, _sc->bsh, _reg)
+#define WRITE2(_sc, _reg, _val) \
+ bus_space_write_2(_sc->bst, _sc->bsh, _reg, _val)
+#define READ1(_sc, _reg) \
+ bus_space_read_1(_sc->bst, _sc->bsh, _reg)
+#define WRITE1(_sc, _reg, _val) \
+ bus_space_write_1(_sc->bst, _sc->bsh, _reg, _val)
Added: head/sys/arm/altera/socfpga/socfpga_manager.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/altera/socfpga/socfpga_manager.c Sat Sep 6 08:48:57
2014 (r271186)
@@ -0,0 +1,436 @@
+/*-
+ * Copyright (c) 2014 Ruslan Bukin <b...@bsdpad.com>
+ * All rights reserved.
+ *
+ * This software was developed by SRI International and the University of
+ * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
+ * ("CTSRD"), as part of the DARPA CRASH research programme.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
+ */
+
+/*
+ * Altera FPGA Manager.
+ * Chapter 4, Cyclone V Device Handbook (CV-5V2 2014.07.22)
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/malloc.h>
+#include <sys/rman.h>
+#include <sys/timeet.h>
+#include <sys/timetc.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <machine/bus.h>
+#include <machine/fdt.h>
+#include <machine/cpu.h>
+#include <machine/intr.h>
+
+#include <arm/altera/socfpga/socfpga_common.h>
+
+/* FPGA Manager Module Registers */
+#define FPGAMGR_STAT 0x0 /* Status Register */
+#define STAT_MSEL_MASK 0x1f
+#define STAT_MSEL_SHIFT 3
+#define STAT_MODE_SHIFT 0
+#define STAT_MODE_MASK 0x7
+#define FPGAMGR_CTRL 0x4 /* Control Register */
+#define CTRL_AXICFGEN (1 << 8)
+#define CTRL_CDRATIO_MASK 0x3
+#define CTRL_CDRATIO_SHIFT 6
+#define CTRL_CFGWDTH_MASK 1
+#define CTRL_CFGWDTH_SHIFT 9
+#define CTRL_NCONFIGPULL (1 << 2)
+#define CTRL_NCE (1 << 1)
+#define CTRL_EN (1 << 0)
+#define FPGAMGR_DCLKCNT 0x8 /* DCLK Count Register */
+#define FPGAMGR_DCLKSTAT 0xC /* DCLK Status Register */
+#define FPGAMGR_GPO 0x10 /* General-Purpose Output
Register */
+#define FPGAMGR_GPI 0x14 /* General-Purpose Input
Register */
+#define FPGAMGR_MISCI 0x18 /* Miscellaneous Input Register
*/
+
+/* Configuration Monitor (MON) Registers */
+#define GPIO_INTEN 0x830 /* Interrupt Enable Register */
+#define GPIO_INTMASK 0x834 /* Interrupt Mask Register */
+#define GPIO_INTTYPE_LEVEL 0x838 /* Interrupt Level Register */
+#define GPIO_INT_POLARITY 0x83C /* Interrupt Polarity Register
*/
+#define GPIO_INTSTATUS 0x840 /* Interrupt Status Register */
+#define GPIO_RAW_INTSTATUS 0x844 /* Raw Interrupt Status
Register */
+#define GPIO_PORTA_EOI 0x84C /* Clear Interrupt Register */
+#define PORTA_EOI_NS (1 << 0)
+#define GPIO_EXT_PORTA 0x850 /* External Port A Register */
+#define GPIO_LS_SYNC 0x860 /* Synchronization Level
Register */
+#define GPIO_VER_ID_CODE 0x86C /* GPIO Version Register */
+#define GPIO_CONFIG_REG2 0x870 /* Configuration Register 2 */
+#define GPIO_CONFIG_REG1 0x874 /* Configuration Register 1 */
+
+#define MSEL_PP16_FAST_NOAES_NODC 0x0
+#define MSEL_PP16_FAST_AES_NODC 0x1
+#define MSEL_PP16_FAST_AESOPT_DC 0x2
+#define MSEL_PP16_SLOW_NOAES_NODC 0x4
+#define MSEL_PP16_SLOW_AES_NODC 0x5
+#define MSEL_PP16_SLOW_AESOPT_DC 0x6
+#define MSEL_PP32_FAST_NOAES_NODC 0x8
+#define MSEL_PP32_FAST_AES_NODC 0x9
+#define MSEL_PP32_FAST_AESOPT_DC 0xa
+#define MSEL_PP32_SLOW_NOAES_NODC 0xc
+#define MSEL_PP32_SLOW_AES_NODC 0xd
+#define MSEL_PP32_SLOW_AESOPT_DC 0xe
+
+#define CFGWDTH_16 0
+#define CFGWDTH_32 1
+
+#define CDRATIO_1 0
+#define CDRATIO_2 1
+#define CDRATIO_4 2
+#define CDRATIO_8 3
+
+#define FPGAMGR_MODE_POWEROFF 0x0
+#define FPGAMGR_MODE_RESET 0x1
+#define FPGAMGR_MODE_CONFIG 0x2
+#define FPGAMGR_MODE_INIT 0x3
+#define FPGAMGR_MODE_USER 0x4
+
+struct cfgmgr_mode {
+ int msel;
+ int cfgwdth;
+ int cdratio;
+};
+
+static struct cfgmgr_mode cfgmgr_modes[] = {
+ { MSEL_PP16_FAST_NOAES_NODC, CFGWDTH_16, CDRATIO_1 },
+ { MSEL_PP16_FAST_AES_NODC, CFGWDTH_16, CDRATIO_2 },
+ { MSEL_PP16_FAST_AESOPT_DC, CFGWDTH_16, CDRATIO_4 },
+ { MSEL_PP16_SLOW_NOAES_NODC, CFGWDTH_16, CDRATIO_1 },
+ { MSEL_PP16_SLOW_AES_NODC, CFGWDTH_16, CDRATIO_2 },
+ { MSEL_PP16_SLOW_AESOPT_DC, CFGWDTH_16, CDRATIO_4 },
+ { MSEL_PP32_FAST_NOAES_NODC, CFGWDTH_32, CDRATIO_1 },
+ { MSEL_PP32_FAST_AES_NODC, CFGWDTH_32, CDRATIO_4 },
+ { MSEL_PP32_FAST_AESOPT_DC, CFGWDTH_32, CDRATIO_8 },
+ { MSEL_PP32_SLOW_NOAES_NODC, CFGWDTH_32, CDRATIO_1 },
+ { MSEL_PP32_SLOW_AES_NODC, CFGWDTH_32, CDRATIO_4 },
+ { MSEL_PP32_SLOW_AESOPT_DC, CFGWDTH_32, CDRATIO_8 },
+ { -1, -1, -1 },
+};
+
+struct fpgamgr_softc {
+ struct resource *res[3];
+ bus_space_tag_t bst;
+ bus_space_handle_t bsh;
+ bus_space_tag_t bst_data;
+ bus_space_handle_t bsh_data;
+ struct cdev *mgr_cdev;
+ device_t dev;
+};
+
+static struct resource_spec fpgamgr_spec[] = {
+ { SYS_RES_MEMORY, 0, RF_ACTIVE },
+ { SYS_RES_MEMORY, 1, RF_ACTIVE },
+ { SYS_RES_IRQ, 0, RF_ACTIVE },
+ { -1, 0 }
+};
+
+static int
+fpgamgr_probe(device_t dev)
+{
+
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (!ofw_bus_is_compatible(dev, "altr,fpga-mgr"))
+ return (ENXIO);
+
+ device_set_desc(dev, "FPGA Manager");
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+fpgamgr_state_get(struct fpgamgr_softc *sc)
+{
+ int reg;
+
+ reg = READ4(sc, FPGAMGR_STAT);
+ reg >>= STAT_MODE_SHIFT;
+ reg &= STAT_MODE_MASK;
+
+ return reg;
+}
+
+static int
+fpgamgr_state_wait(struct fpgamgr_softc *sc, int state)
+{
+ int tout;
+
+ tout = 1000;
+ while (tout > 0) {
+ if (fpgamgr_state_get(sc) == state)
+ break;
+ tout--;
+ DELAY(10);
+ }
+ if (tout == 0) {
+ return (1);
+ }
+
+ return (0);
+}
+
+static int
+fpga_open(struct cdev *dev __unused, int flags __unused,
+ int fmt __unused, struct thread *td __unused)
+{
+ struct fpgamgr_softc *sc;
+ struct cfgmgr_mode *mode;
+ int msel;
+ int reg;
+ int i;
+
+ sc = dev->si_drv1;
+
+ msel = READ4(sc, FPGAMGR_STAT);
+ msel >>= STAT_MSEL_SHIFT;
+ msel &= STAT_MSEL_MASK;
+
+ mode = NULL;
+ for (i = 0; cfgmgr_modes[i].msel != -1; i++) {
+ if (msel == cfgmgr_modes[i].msel) {
+ mode = &cfgmgr_modes[i];
+ break;
+ }
+ }
+ if (mode == NULL) {
+ device_printf(sc->dev, "Can't configure: unknown mode\n");
+ return (ENXIO);
+ }
+
+ reg = READ4(sc, FPGAMGR_CTRL);
+ reg &= ~(CTRL_CDRATIO_MASK << CTRL_CDRATIO_SHIFT);
+ reg |= (mode->cdratio << CTRL_CDRATIO_SHIFT);
+ reg &= ~(CTRL_CFGWDTH_MASK << CTRL_CFGWDTH_SHIFT);
+ reg |= (mode->cfgwdth << CTRL_CFGWDTH_SHIFT);
+ reg &= ~(CTRL_NCE);
+ WRITE4(sc, FPGAMGR_CTRL, reg);
+
+ /* Enable configuration */
+ reg = READ4(sc, FPGAMGR_CTRL);
+ reg |= (CTRL_EN);
+ WRITE4(sc, FPGAMGR_CTRL, reg);
+
+ /* Reset FPGA */
+ reg = READ4(sc, FPGAMGR_CTRL);
+ reg |= (CTRL_NCONFIGPULL);
+ WRITE4(sc, FPGAMGR_CTRL, reg);
+
+ /* Wait reset state */
+ if (fpgamgr_state_wait(sc, FPGAMGR_MODE_RESET)) {
+ device_printf(sc->dev, "Can't get RESET state\n");
+ return (ENXIO);
+ }
+
+ /* Release from reset */
+ reg = READ4(sc, FPGAMGR_CTRL);
+ reg &= ~(CTRL_NCONFIGPULL);
+ WRITE4(sc, FPGAMGR_CTRL, reg);
+
+ if (fpgamgr_state_wait(sc, FPGAMGR_MODE_CONFIG)) {
+ device_printf(sc->dev, "Can't get CONFIG state\n");
+ return (ENXIO);
+ }
+
+ /* Clear nSTATUS edge interrupt */
+ WRITE4(sc, GPIO_PORTA_EOI, PORTA_EOI_NS);
+
+ /* Enter configuration state */
+ reg = READ4(sc, FPGAMGR_CTRL);
+ reg |= (CTRL_AXICFGEN);
+ WRITE4(sc, FPGAMGR_CTRL, reg);
+
+ return (0);
+}
+
+static int
+fpga_wait_dclk_pulses(struct fpgamgr_softc *sc, int npulses)
+{
+ int tout;
+
+ /* Clear done bit, if any */
+ if (READ4(sc, FPGAMGR_DCLKSTAT) != 0)
+ WRITE4(sc, FPGAMGR_DCLKSTAT, 0x1);
+
+ /* Request DCLK pulses */
+ WRITE4(sc, FPGAMGR_DCLKCNT, npulses);
+
+ /* Wait finish */
+ tout = 1000;
+ while (tout > 0) {
+ if (READ4(sc, FPGAMGR_DCLKSTAT) == 1) {
+ WRITE4(sc, FPGAMGR_DCLKSTAT, 0x1);
+ break;
+ }
+ tout--;
+ DELAY(10);
+ }
+ if (tout == 0) {
+ return (1);
+ }
+
+ return (0);
+}
+
+static int
+fpga_close(struct cdev *dev __unused, int flags __unused,
+ int fmt __unused, struct thread *td __unused)
+{
+ struct fpgamgr_softc *sc;
+ int reg;
+
+ sc = dev->si_drv1;
+
+ reg = READ4(sc, GPIO_EXT_PORTA);
+ if ((reg & (1 << 10)) == 0) {
+ device_printf(sc->dev, "Err: configuration failed\n");
+ return (ENXIO);
+ }
+
+ /* Exit configuration state */
+ reg = READ4(sc, FPGAMGR_CTRL);
+ reg &= ~(CTRL_AXICFGEN);
+ WRITE4(sc, FPGAMGR_CTRL, reg);
+
+ /* Wait dclk pulses */
+ if (fpga_wait_dclk_pulses(sc, 4)) {
+ device_printf(sc->dev, "Can't proceed 4 dclk pulses\n");
+ return (ENXIO);
+ }
+
+ if (fpgamgr_state_wait(sc, FPGAMGR_MODE_USER)) {
+ device_printf(sc->dev, "Can't get USER mode\n");
+ return (ENXIO);
+ }
+
+ /* Disable configuration */
+ reg = READ4(sc, FPGAMGR_CTRL);
+ reg &= ~(CTRL_EN);
+ WRITE4(sc, FPGAMGR_CTRL, reg);
+
+ return (0);
+}
+
+static int
+fpga_write(struct cdev *dev, struct uio *uio, int ioflag)
+{
+ struct fpgamgr_softc *sc;
+ int buffer;
+
+ sc = dev->si_drv1;
+
+ /*
+ * Device supports 4-byte copy only.
+ * TODO: add padding for <4 bytes.
+ */
+
+ while (uio->uio_resid > 0) {
+ uiomove(&buffer, 4, uio);
+ bus_space_write_4(sc->bst_data, sc->bsh_data,
+ 0x0, buffer);
+ }
+
+ return (0);
+}
+
+static int
+fpga_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags,
+ struct thread *td)
+{
+
+ return (0);
+}
+
+static struct cdevsw fpga_cdevsw = {
+ .d_version = D_VERSION,
+ .d_open = fpga_open,
+ .d_close = fpga_close,
+ .d_write = fpga_write,
+ .d_ioctl = fpga_ioctl,
+ .d_name = "FPGA Manager",
+};
+
+static int
+fpgamgr_attach(device_t dev)
+{
+ struct fpgamgr_softc *sc;
+
+ sc = device_get_softc(dev);
+ sc->dev = dev;
+
+ if (bus_alloc_resources(dev, fpgamgr_spec, sc->res)) {
+ device_printf(dev, "could not allocate resources\n");
+ return (ENXIO);
+ }
+
+ /* Memory interface */
+ sc->bst = rman_get_bustag(sc->res[0]);
+ sc->bsh = rman_get_bushandle(sc->res[0]);
+ sc->bst_data = rman_get_bustag(sc->res[1]);
+ sc->bsh_data = rman_get_bushandle(sc->res[1]);
+
+ sc->mgr_cdev = make_dev(&fpga_cdevsw, 0, UID_ROOT, GID_WHEEL,
+ 0600, "fpga%d", device_get_unit(sc->dev));
+
+ if (sc->mgr_cdev == NULL) {
+ device_printf(dev, "Failed to create character device.\n");
+ return (ENXIO);
+ }
+
+ sc->mgr_cdev->si_drv1 = sc;
+
+ return (0);
+}
+
+static device_method_t fpgamgr_methods[] = {
+ DEVMETHOD(device_probe, fpgamgr_probe),
+ DEVMETHOD(device_attach, fpgamgr_attach),
+ { 0, 0 }
+};
+
+static driver_t fpgamgr_driver = {
+ "fpgamgr",
+ fpgamgr_methods,
+ sizeof(struct fpgamgr_softc),
+};
+
+static devclass_t fpgamgr_devclass;
+
+DRIVER_MODULE(fpgamgr, simplebus, fpgamgr_driver, fpgamgr_devclass, 0, 0);
Modified: head/sys/boot/fdt/dts/arm/socfpga.dtsi
==============================================================================
--- head/sys/boot/fdt/dts/arm/socfpga.dtsi Sat Sep 6 04:39:26 2014
(r271185)
+++ head/sys/boot/fdt/dts/arm/socfpga.dtsi Sat Sep 6 08:48:57 2014
(r271186)
@@ -69,6 +69,14 @@
interrupt-parent = < &GIC >;
};
+ fpgamgr: fpgamgr@ff706000 {
+ compatible = "altr,fpga-mgr";
+ reg = <0xff706000 0x1000>, /* FPGAMGRREGS */
+ <0xffb90000 0x1000>; /* FPGAMGRDATA */
+ interrupts = < 207 >;
+ interrupt-parent = <&GIC>;
+ };
+
serial0: serial@ffc02000 {
compatible = "ns16550";
reg = <0xffc02000 0x1000>;
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