--- /dev/null
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Jani Nikula <jani.nikula@intel.com>
+ *
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "intel_gpu_tools.h"
+
+#define OPREGION_HEADER_OFFSET 0
+#define OPREGION_ACPI_OFFSET 0x100
+#define OPREGION_SWSCI_OFFSET 0x200
+#define OPREGION_ASLE_OFFSET 0x300
+#define OPREGION_VBT_OFFSET 0x400
+#define OPREGION_ASLE_EXT_OFFSET 0x1C00
+
+#define MBOX_ACPI (1 << 0)
+#define MBOX_SWSCI (1 << 1)
+#define MBOX_ASLE (1 << 2)
+#define MBOX_VBT (1 << 3)
+#define MBOX_ASLE_EXT (1 << 4)
+
+struct opregion_header {
+ char sign[16];
+ uint32_t size;
+ uint32_t over;
+ char sver[32];
+ char vver[16];
+ char gver[16];
+ uint32_t mbox;
+ uint32_t dmod;
+ uint32_t pcon;
+ char dver[32];
+ uint8_t rsv1[124];
+} __attribute__((packed));
+
+/* OpRegion mailbox #1: public ACPI methods */
+struct opregion_acpi {
+ uint32_t drdy; /* driver readiness */
+ uint32_t csts; /* notification status */
+ uint32_t cevt; /* current event */
+ uint8_t rsvd1[20];
+ uint32_t didl[8]; /* supported display devices ID list */
+ uint32_t cpdl[8]; /* currently presented display list */
+ uint32_t cadl[8]; /* currently active display list */
+ uint32_t nadl[8]; /* next active devices list */
+ uint32_t aslp; /* ASL sleep time-out */
+ uint32_t tidx; /* toggle table index */
+ uint32_t chpd; /* current hotplug enable indicator */
+ uint32_t clid; /* current lid state*/
+ uint32_t cdck; /* current docking state */
+ uint32_t sxsw; /* Sx state resume */
+ uint32_t evts; /* ASL supported events */
+ uint32_t cnot; /* current OS notification */
+ uint32_t nrdy; /* driver status */
+ uint32_t did2[7];
+ uint32_t cpd2[7];
+ uint8_t rsvd2[4];
+} __attribute__((packed));
+
+/* OpRegion mailbox #2: SWSCI */
+struct opregion_swsci {
+ uint32_t scic; /* SWSCI command|status|data */
+ uint32_t parm; /* command parameters */
+ uint32_t dslp; /* driver sleep time-out */
+ uint8_t rsvd[244];
+} __attribute__((packed));
+
+/* OpRegion mailbox #3: ASLE */
+struct opregion_asle {
+ uint32_t ardy; /* driver readiness */
+ uint32_t aslc; /* ASLE interrupt command */
+ uint32_t tche; /* technology enabled indicator */
+ uint32_t alsi; /* current ALS illuminance reading */
+ uint32_t bclp; /* backlight brightness to set */
+ uint32_t pfit; /* panel fitting state */
+ uint32_t cblv; /* current brightness level */
+ uint16_t bclm[20]; /* backlight level duty cycle mapping table */
+ uint32_t cpfm; /* current panel fitting mode */
+ uint32_t epfm; /* enabled panel fitting modes */
+ uint8_t plut_header; /* panel LUT and identifier */
+ uint8_t plut_identifier[10]; /* panel LUT and identifier */
+ uint8_t plut[63]; /* panel LUT and identifier */
+ uint32_t pfmb; /* PWM freq and min brightness */
+ uint32_t ccdv;
+ uint32_t pcft;
+ uint32_t srot;
+ uint32_t iuer;
+ uint8_t fdss[8];
+ uint32_t fdsp;
+ uint32_t stat;
+ uint8_t rsvd[86];
+} __attribute__((packed));
+
+/* OpRegion mailbox #4: VBT */
+struct opregion_vbt {
+ char product_string[20];
+ /* rest ignored */
+} __attribute__((packed));
+
+/* OpRegion mailbox #5: ASLE extension */
+struct opregion_asle_ext {
+ uint32_t phed;
+ uint8_t bddc[256];
+} __attribute__((packed));
+
+static uint32_t decode_header(const void *buffer)
+{
+ const struct opregion_header *header = buffer;
+ char *s;
+
+ if (strncmp("IntelGraphicsMem", header->sign, sizeof(header->sign))) {
+ fprintf(stderr, "invalid opregion signature\n");
+ return 0;
+ }
+
+ printf("OpRegion Header:\n");
+
+ s = strndup(header->sign, sizeof(header->sign));
+ printf("\tsign:\t%s\n", s);
+ free(s);
+
+ printf("\tsize:\t0x%08x\n", header->size);
+ printf("\tover:\t0x%08x\n", header->over);
+
+ s = strndup(header->sver, sizeof(header->sver));
+ printf("\tsver:\t%s\n", s);
+ free(s);
+
+ s = strndup(header->vver, sizeof(header->vver));
+ printf("\tvver:\t%s\n", s);
+ free(s);
+
+ s = strndup(header->gver, sizeof(header->gver));
+ printf("\tgver:\t%s\n", s);
+ free(s);
+
+ printf("\tmbox:\t0x%08x\n", header->mbox);
+
+ printf("\tdmod:\t0x%08x\n", header->dmod);
+ printf("\tpcon:\t0x%08x\n", header->pcon);
+
+ s = strndup(header->dver, sizeof(header->dver));
+ printf("\tdver:\t%s\n", s);
+ free(s);
+
+ printf("\n");
+
+ return header->mbox;
+}
+
+static void decode_acpi(const void *buffer)
+{
+ const struct opregion_acpi *acpi = buffer;
+ int i;
+
+ printf("OpRegion Mailbox 1: Public ACPI Methods:\n");
+
+ printf("\tdrdy:\t0x%08x\n", acpi->drdy);
+ printf("\tcsts:\t0x%08x\n", acpi->csts);
+ printf("\tcevt:\t0x%08x\n", acpi->cevt);
+
+ printf("\tdidl:\n");
+ for (i = 0; i < ARRAY_SIZE(acpi->didl); i++)
+ printf("\t\tdidl[%d]:\t0x%08x\n", i, acpi->didl[i]);
+
+ printf("\tcpdl:\n");
+ for (i = 0; i < ARRAY_SIZE(acpi->cpdl); i++)
+ printf("\t\tcpdl[%d]:\t0x%08x\n", i, acpi->cpdl[i]);
+
+ printf("\tcadl:\n");
+ for (i = 0; i < ARRAY_SIZE(acpi->cadl); i++)
+ printf("\t\tcadl[%d]:\t0x%08x\n", i, acpi->cadl[i]);
+
+ printf("\tnadl:\n");
+ for (i = 0; i < ARRAY_SIZE(acpi->nadl); i++)
+ printf("\t\tnadl[%d]:\t0x%08x\n", i, acpi->nadl[i]);
+
+ printf("\taslp:\t0x%08x\n", acpi->aslp);
+ printf("\ttidx:\t0x%08x\n", acpi->tidx);
+ printf("\tchpd:\t0x%08x\n", acpi->chpd);
+ printf("\tclid:\t0x%08x\n", acpi->clid);
+ printf("\tcdck:\t0x%08x\n", acpi->cdck);
+ printf("\tsxsw:\t0x%08x\n", acpi->sxsw);
+ printf("\tevts:\t0x%08x\n", acpi->evts);
+ printf("\tcnot:\t0x%08x\n", acpi->cnot);
+ printf("\tnrdy:\t0x%08x\n", acpi->nrdy);
+
+ printf("\tdid2:\n");
+ for (i = 0; i < ARRAY_SIZE(acpi->did2); i++)
+ printf("\t\tdid2[%d]:\t0x%08x\n", i, acpi->did2[i]);
+
+ printf("\tcpd2:\n");
+ for (i = 0; i < ARRAY_SIZE(acpi->cpd2); i++)
+ printf("\t\tcpd2[%d]:\t0x%08x\n", i, acpi->cpd2[i]);
+
+ printf("\n");
+}
+
+static void decode_swsci(const void *buffer)
+{
+ const struct opregion_swsci *swsci = buffer;
+
+ printf("OpRegion Mailbox 2: Software SCI Interface (SWSCI):\n");
+
+ printf("\tscic:\t0x%08x\n", swsci->scic);
+ printf("\tparm:\t0x%08x\n", swsci->parm);
+ printf("\tdslp:\t0x%08x\n", swsci->dslp);
+
+ printf("\n");
+}
+
+static void decode_asle(const void *buffer)
+{
+ const struct opregion_asle *asle = buffer;
+ int i;
+
+ printf("OpRegion Mailbox 3: BIOS to Driver Notification (ASLE):\n");
+
+ printf("\tardy:\t0x%08x\n", asle->ardy);
+ printf("\taslc:\t0x%08x\n", asle->aslc);
+ printf("\ttche:\t0x%08x\n", asle->tche);
+ printf("\talsi:\t0x%08x\n", asle->alsi);
+ printf("\tbclp:\t0x%08x\n", asle->bclp);
+ printf("\tpfit:\t0x%08x\n", asle->pfit);
+ printf("\tcblv:\t0x%08x\n", asle->cblv);
+
+ printf("\tbclm:\n");
+ for (i = 0; i < ARRAY_SIZE(asle->bclm); i++)
+ printf("\t\tbclm[%d]:\t0x%04x\n", i, asle->bclm[i]);
+
+ printf("\tcpfm:\t0x%08x\n", asle->cpfm);
+ printf("\tepfm:\t0x%08x\n", asle->epfm);
+
+ printf("\tplut header:\t0x%02x\n", asle->plut_header);
+
+ printf("\tplut identifier:");
+ for (i = 0; i < ARRAY_SIZE(asle->plut_identifier); i++)
+ printf(" %02x", asle->plut_identifier[i]);
+ printf("\n");
+
+ printf("\tplut:\n");
+ for (i = 0; i < ARRAY_SIZE(asle->plut); i++) {
+ const int COLUMNS = 7;
+
+ if (i % COLUMNS == 0)
+ printf("\t\tplut[%d]:\t", i / COLUMNS);
+
+ printf("%02x ", asle->plut[i]);
+
+ if (i % COLUMNS == COLUMNS - 1)
+ printf("\n");
+ }
+
+ printf("\tpfmb:\t0x%08x\n", asle->pfmb);
+ printf("\tccdv:\t0x%08x\n", asle->ccdv);
+ printf("\tpcft:\t0x%08x\n", asle->pcft);
+ printf("\tsrot:\t0x%08x\n", asle->srot);
+ printf("\tiuer:\t0x%08x\n", asle->iuer);
+
+ printf("\tfdss:\t");
+ for (i = 0; i < ARRAY_SIZE(asle->fdss); i++)
+ printf("%02x ", asle->fdss[i]);
+ printf("\n");
+
+ printf("\tfdsp:\t0x%08x\n", asle->fdsp);
+ printf("\tstat:\t0x%08x\n", asle->stat);
+
+ printf("\n");
+}
+
+static void decode_vbt(const void *buffer)
+{
+ const struct opregion_vbt *vbt = buffer;
+ char *s;
+
+ printf("OpRegion Mailbox 4: Video BIOS Table (VBT):\n");
+
+ s = strndup(vbt->product_string, sizeof(vbt->product_string));
+ printf("\tproduct string:\t%s\n", s);
+ free(s);
+
+ printf("\t(use intel_bios_reader to decode the VBT)\n");
+
+ printf("\n");
+}
+
+static void decode_asle_ext(const void *buffer)
+{
+ const struct opregion_asle_ext *asle_ext = buffer;
+ int i;
+
+ printf("OpRegion Mailbox 5: BIOS to Driver Notification Extension:\n");
+
+ printf("\tphed:\t0x%08x\n", asle_ext->phed);
+
+ printf("\tbddc:\n");
+ for (i = 0; i < ARRAY_SIZE(asle_ext->bddc); i++) {
+ const int COLUMNS = 16;
+
+ if (i % COLUMNS == 0)
+ printf("\t\tbddc[0x%02x]:\t", i);
+
+ printf("%02x ", asle_ext->bddc[i]);
+
+ if (i % COLUMNS == COLUMNS - 1)
+ printf("\n");
+ }
+
+ printf("\n");
+}
+
+static void decode_opregion(const uint8_t *opregion, int size)
+{
+ uint32_t mbox;
+
+ /* XXX: allow decoding up to size */
+ if (OPREGION_ASLE_EXT_OFFSET + sizeof(struct opregion_asle_ext) > size) {
+ fprintf(stderr, "buffer too small\n");
+ return;
+ }
+
+ mbox = decode_header(opregion + OPREGION_HEADER_OFFSET);
+ if (mbox & MBOX_ACPI)
+ decode_acpi(opregion + OPREGION_ACPI_OFFSET);
+ if (mbox & MBOX_SWSCI)
+ decode_swsci(opregion + OPREGION_SWSCI_OFFSET);
+ if (mbox & MBOX_ASLE)
+ decode_asle(opregion + OPREGION_ASLE_OFFSET);
+ if (mbox & MBOX_VBT)
+ decode_vbt(opregion + OPREGION_VBT_OFFSET);
+ if (mbox & MBOX_ASLE_EXT)
+ decode_asle_ext(opregion + OPREGION_ASLE_EXT_OFFSET);
+}
+
+int main(int argc, char *argv[])
+{
+ const char *filename = "/sys/kernel/debug/dri/0/i915_opregion";
+ int fd;
+ struct stat finfo;
+ uint8_t *opregion;
+ int c, option_index = 0;
+
+ static struct option long_options[] = {
+ { "file", required_argument, 0, 'f' },
+ { "help", no_argument, 0, 'h' },
+ { 0 },
+ };
+
+ while ((c = getopt_long(argc, argv, "hf:",
+ long_options, &option_index)) != -1) {
+ switch (c) {
+ case 'h':
+ printf("usage: intel_opregion_decode [-f|--file=<input>]\n");
+ return 0;
+ case 'f':
+ filename = optarg;
+ break;
+ default:
+ fprintf(stderr, "unkown command options\n");
+ return 1;
+ }
+ }
+
+ fd = open(filename, O_RDONLY);
+ if (fd == -1) {
+ printf("Couldn't open \"%s\": %s\n", filename, strerror(errno));
+ return 1;
+ }
+
+ if (stat(filename, &finfo)) {
+ printf("failed to stat \"%s\": %s\n", filename, strerror(errno));
+ return 1;
+ }
+
+ if (finfo.st_size == 0) {
+ int len = 0, ret;
+ finfo.st_size = 8192;
+ opregion = malloc(finfo.st_size);
+ while ((ret = read(fd, opregion + len, finfo.st_size - len))) {
+ if (ret < 0) {
+ printf("failed to read \"%s\": %s\n", filename,
+ strerror(errno));
+ return 1;
+ }
+
+ len += ret;
+ if (len == finfo.st_size) {
+ finfo.st_size *= 2;
+ opregion = realloc(opregion, finfo.st_size);
+ }
+ }
+ } else {
+ opregion = mmap(NULL, finfo.st_size, PROT_READ, MAP_SHARED,
+ fd, 0);
+ if (opregion == MAP_FAILED) {
+ printf("failed to map \"%s\": %s\n", filename,
+ strerror(errno));
+ return 1;
+ }
+ }
+
+ decode_opregion(opregion, finfo.st_size);
+
+ return 0;
+}
projects / platform / upstream / intel-gpu-tools.git / commitdiff