svn commit: r314600 - head/sys/arm/altera/socfpga
Ruslan Bukin
br at FreeBSD.org
Fri Mar 3 14:19:38 UTC 2017
Author: br
Date: Fri Mar 3 14:19:37 2017
New Revision: 314600
URL: https://svnweb.freebsd.org/changeset/base/314600
Log:
Add FPGA manager driver for Intel Arria 10.
With this driver we able to program FPGA core from FreeBSD system
running on ARM core.
Sponsored by: DARPA, AFRL
Added:
head/sys/arm/altera/socfpga/socfpga_a10_manager.c (contents, props changed)
Modified:
head/sys/arm/altera/socfpga/files.socfpga
Modified: head/sys/arm/altera/socfpga/files.socfpga
==============================================================================
--- head/sys/arm/altera/socfpga/files.socfpga Fri Mar 3 14:17:07 2017 (r314599)
+++ head/sys/arm/altera/socfpga/files.socfpga Fri Mar 3 14:19:37 2017 (r314600)
@@ -11,6 +11,9 @@ arm/altera/socfpga/socfpga_gpio.c optio
dev/mmc/host/dwmmc.c optional dwmmc
+# Arria 10
+arm/altera/socfpga/socfpga_a10_manager.c standard
+
# BERI specific
dev/beri/beri_ring.c optional beri_ring
dev/beri/beri_mem.c optional beri_mem
Added: head/sys/arm/altera/socfpga/socfpga_a10_manager.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/altera/socfpga/socfpga_a10_manager.c Fri Mar 3 14:19:37 2017 (r314600)
@@ -0,0 +1,444 @@
+/*-
+ * Copyright (c) 2017 Ruslan Bukin <br at 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.
+ */
+
+/*
+ * Intel Arria 10 FPGA Manager.
+ * Chapter 4, Arria 10 Hard Processor System Technical Reference Manual.
+ * Chapter A, FPGA Reconfiguration.
+ */
+
+#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/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <machine/bus.h>
+#include <machine/cpu.h>
+#include <machine/intr.h>
+
+#include <arm/altera/socfpga/socfpga_common.h>
+
+#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 */
+#define IMGCFG_CTRL_00 0x70
+#define S2F_CONDONE_OE (1 << 24)
+#define S2F_NSTATUS_OE (1 << 16)
+#define CTRL_00_NCONFIG (1 << 8)
+#define CTRL_00_NENABLE_CONDONE (1 << 2)
+#define CTRL_00_NENABLE_NSTATUS (1 << 1)
+#define CTRL_00_NENABLE_NCONFIG (1 << 0)
+#define IMGCFG_CTRL_01 0x74
+#define CTRL_01_S2F_NCE (1 << 24)
+#define CTRL_01_S2F_PR_REQUEST (1 << 16)
+#define CTRL_01_S2F_NENABLE_CONFIG (1 << 0)
+#define IMGCFG_CTRL_02 0x78
+#define CTRL_02_CDRATIO_S 16
+#define CTRL_02_CDRATIO_M (0x3 << CTRL_02_CDRATIO_S)
+#define CTRL_02_CFGWIDTH_16 (0 << 24)
+#define CTRL_02_CFGWIDTH_32 (1 << 24)
+#define CTRL_02_EN_CFG_DATA (1 << 8)
+#define CTRL_02_EN_CFG_CTRL (1 << 0)
+#define IMGCFG_STAT 0x80
+#define F2S_PR_ERROR (1 << 11)
+#define F2S_PR_DONE (1 << 10)
+#define F2S_PR_READY (1 << 9)
+#define F2S_MSEL_S 16
+#define F2S_MSEL_M (0x7 << F2S_MSEL_S)
+#define MSEL_PASSIVE_FAST 0
+#define MSEL_PASSIVE_SLOW 1
+#define F2S_NCONFIG_PIN (1 << 12)
+#define F2S_CONDONE_OE (1 << 7)
+#define F2S_NSTATUS_PIN (1 << 4)
+#define F2S_CONDONE_PIN (1 << 6)
+#define F2S_USERMODE (1 << 2)
+
+struct fpgamgr_a10_softc {
+ struct resource *res[2];
+ bus_space_tag_t bst_data;
+ bus_space_handle_t bsh_data;
+ struct cdev *mgr_cdev;
+ device_t dev;
+};
+
+static struct resource_spec fpgamgr_a10_spec[] = {
+ { SYS_RES_MEMORY, 0, RF_ACTIVE },
+ { SYS_RES_MEMORY, 1, RF_ACTIVE },
+ { -1, 0 }
+};
+
+static int
+fpga_wait_dclk_pulses(struct fpgamgr_a10_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) {
+ device_printf(sc->dev,
+ "Error: dclkpulses wait timeout\n");
+ return (1);
+ }
+
+ return (0);
+}
+
+
+static int
+fpga_open(struct cdev *dev, int flags __unused,
+ int fmt __unused, struct thread *td __unused)
+{
+ struct fpgamgr_a10_softc *sc;
+ int tout;
+ int msel;
+ int reg;
+
+ sc = dev->si_drv1;
+
+ /* Step 1 */
+ reg = READ4(sc, IMGCFG_STAT);
+ if ((reg & F2S_USERMODE) == 0) {
+ device_printf(sc->dev, "Error: invalid mode\n");
+ return (ENXIO);
+ };
+
+ /* Step 2 */
+ reg = READ4(sc, IMGCFG_STAT);
+ msel = (reg & F2S_MSEL_M) >> F2S_MSEL_S;
+ if ((msel != MSEL_PASSIVE_FAST) && \
+ (msel != MSEL_PASSIVE_SLOW)) {
+ device_printf(sc->dev,
+ "Error: invalid msel %d\n", msel);
+ return (ENXIO);
+ };
+
+ /*
+ * Step 3.
+ * TODO: add support for compressed, encrypted images.
+ */
+ reg = READ4(sc, IMGCFG_CTRL_02);
+ reg &= ~(CTRL_02_CDRATIO_M);
+ WRITE4(sc, IMGCFG_CTRL_02, reg);
+
+ reg = READ4(sc, IMGCFG_CTRL_02);
+ reg &= ~CTRL_02_CFGWIDTH_32;
+ WRITE4(sc, IMGCFG_CTRL_02, reg);
+
+ /* Step 4. a */
+ reg = READ4(sc, IMGCFG_CTRL_01);
+ reg &= ~CTRL_01_S2F_PR_REQUEST;
+ WRITE4(sc, IMGCFG_CTRL_01, reg);
+
+ reg = READ4(sc, IMGCFG_CTRL_00);
+ reg |= CTRL_00_NCONFIG;
+ WRITE4(sc, IMGCFG_CTRL_00, reg);
+
+ /* b */
+ reg = READ4(sc, IMGCFG_CTRL_01);
+ reg &= ~CTRL_01_S2F_NCE;
+ WRITE4(sc, IMGCFG_CTRL_01, reg);
+
+ /* c */
+ reg = READ4(sc, IMGCFG_CTRL_02);
+ reg |= CTRL_02_EN_CFG_CTRL;
+ WRITE4(sc, IMGCFG_CTRL_02, reg);
+
+ /* d */
+ reg = READ4(sc, IMGCFG_CTRL_00);
+ reg &= ~S2F_CONDONE_OE;
+ reg &= ~S2F_NSTATUS_OE;
+ reg |= CTRL_00_NCONFIG;
+ reg |= CTRL_00_NENABLE_NSTATUS;
+ reg |= CTRL_00_NENABLE_CONDONE;
+ reg &= ~CTRL_00_NENABLE_NCONFIG;
+ WRITE4(sc, IMGCFG_CTRL_00, reg);
+
+ /* Step 5 */
+ reg = READ4(sc, IMGCFG_CTRL_01);
+ reg &= ~CTRL_01_S2F_NENABLE_CONFIG;
+ WRITE4(sc, IMGCFG_CTRL_01, reg);
+
+ /* Step 6 */
+ fpga_wait_dclk_pulses(sc, 0x100);
+
+ /* Step 7. a */
+ reg = READ4(sc, IMGCFG_CTRL_01);
+ reg |= CTRL_01_S2F_PR_REQUEST;
+ WRITE4(sc, IMGCFG_CTRL_01, reg);
+
+ /* b, c */
+ fpga_wait_dclk_pulses(sc, 0x7ff);
+
+ /* Step 8 */
+ tout = 10;
+ while (tout--) {
+ reg = READ4(sc, IMGCFG_STAT);
+ if (reg & F2S_PR_ERROR) {
+ device_printf(sc->dev,
+ "Error: PR failed on open.\n");
+ return (ENXIO);
+ }
+ if (reg & F2S_PR_READY) {
+ break;
+ }
+ }
+ if (tout == 0) {
+ device_printf(sc->dev,
+ "Error: Timeout waiting PR ready bit.\n");
+ return (ENXIO);
+ }
+
+ return (0);
+}
+
+static int
+fpga_close(struct cdev *dev, int flags __unused,
+ int fmt __unused, struct thread *td __unused)
+{
+ struct fpgamgr_a10_softc *sc;
+ int tout;
+ int reg;
+
+ sc = dev->si_drv1;
+
+ /* Step 10 */
+ tout = 10;
+ while (tout--) {
+ reg = READ4(sc, IMGCFG_STAT);
+ if (reg & F2S_PR_ERROR) {
+ device_printf(sc->dev,
+ "Error: PR failed.\n");
+ return (ENXIO);
+ }
+ if (reg & F2S_PR_DONE) {
+ break;
+ }
+ }
+
+ /* Step 11 */
+ reg = READ4(sc, IMGCFG_CTRL_01);
+ reg &= ~CTRL_01_S2F_PR_REQUEST;
+ WRITE4(sc, IMGCFG_CTRL_01, reg);
+
+ /* Step 12, 13 */
+ fpga_wait_dclk_pulses(sc, 0x100);
+
+ /* Step 14 */
+ reg = READ4(sc, IMGCFG_CTRL_02);
+ reg &= ~CTRL_02_EN_CFG_CTRL;
+ WRITE4(sc, IMGCFG_CTRL_02, reg);
+
+ /* Step 15 */
+ reg = READ4(sc, IMGCFG_CTRL_01);
+ reg |= CTRL_01_S2F_NCE;
+ WRITE4(sc, IMGCFG_CTRL_01, reg);
+
+ /* Step 16 */
+ reg = READ4(sc, IMGCFG_CTRL_01);
+ reg |= CTRL_01_S2F_NENABLE_CONFIG;
+ WRITE4(sc, IMGCFG_CTRL_01, reg);
+
+ /* Step 17 */
+ reg = READ4(sc, IMGCFG_STAT);
+ if ((reg & F2S_USERMODE) == 0) {
+ device_printf(sc->dev,
+ "Error: invalid mode\n");
+ return (ENXIO);
+ };
+
+ if ((reg & F2S_CONDONE_PIN) == 0) {
+ device_printf(sc->dev,
+ "Error: configuration not done\n");
+ return (ENXIO);
+ };
+
+ if ((reg & F2S_NSTATUS_PIN) == 0) {
+ device_printf(sc->dev,
+ "Error: nstatus pin\n");
+ return (ENXIO);
+ };
+
+ return (0);
+}
+
+static int
+fpga_write(struct cdev *dev, struct uio *uio, int ioflag)
+{
+ struct fpgamgr_a10_softc *sc;
+ uint32_t buffer;
+
+ sc = dev->si_drv1;
+
+ /*
+ * Step 9.
+ * Device supports 4-byte writes only.
+ */
+
+ while (uio->uio_resid >= 4) {
+ uiomove(&buffer, 4, uio);
+ bus_space_write_4(sc->bst_data, sc->bsh_data,
+ 0x0, buffer);
+ }
+
+ switch (uio->uio_resid) {
+ case 3:
+ uiomove(&buffer, 3, uio);
+ buffer &= 0xffffff;
+ bus_space_write_4(sc->bst_data, sc->bsh_data,
+ 0x0, buffer);
+ break;
+ case 2:
+ uiomove(&buffer, 2, uio);
+ buffer &= 0xffff;
+ bus_space_write_4(sc->bst_data, sc->bsh_data,
+ 0x0, buffer);
+ break;
+ case 1:
+ uiomove(&buffer, 1, uio);
+ buffer &= 0xff;
+ bus_space_write_4(sc->bst_data, sc->bsh_data,
+ 0x0, buffer);
+ break;
+ default:
+ break;
+ };
+
+ 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_a10_probe(device_t dev)
+{
+
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (!ofw_bus_is_compatible(dev, "altr,socfpga-a10-fpga-mgr"))
+ return (ENXIO);
+
+ device_set_desc(dev, "Arria 10 FPGA Manager");
+
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+fpgamgr_a10_attach(device_t dev)
+{
+ struct fpgamgr_a10_softc *sc;
+
+ sc = device_get_softc(dev);
+ sc->dev = dev;
+
+ if (bus_alloc_resources(dev, fpgamgr_a10_spec, sc->res)) {
+ device_printf(dev, "Could not allocate resources.\n");
+ return (ENXIO);
+ }
+
+ /* Memory interface */
+ 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_a10_methods[] = {
+ DEVMETHOD(device_probe, fpgamgr_a10_probe),
+ DEVMETHOD(device_attach, fpgamgr_a10_attach),
+ { 0, 0 }
+};
+
+static driver_t fpgamgr_a10_driver = {
+ "fpgamgr_a10",
+ fpgamgr_a10_methods,
+ sizeof(struct fpgamgr_a10_softc),
+};
+
+static devclass_t fpgamgr_a10_devclass;
+
+DRIVER_MODULE(fpgamgr_a10, simplebus, fpgamgr_a10_driver,
+ fpgamgr_a10_devclass, 0, 0);
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