Initial commitHEADsubmit/2.0alpha/20130131.232756accepted/2.0alpha/20130131.230204accepted/tizen_genericaccepted/tizen_common2.0alpha

1 files changed, 606 insertions, 0 deletions

diff --git a/debugger/eudb.c b/debugger/eudb.c
new file mode 100644
index 00000000..228a143f
--- /dev/null
+++ b/debugger/eudb.c
@@ -0,0 +1,606 @@
+/*
+ * Copyright © 2011 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:
+ *    Ben Widawsky <ben@bwidawsk.net>
+ *
+ * Notes:
+ *
+ */
+
+#include <signal.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <strings.h>
+#include <assert.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <sys/un.h>
+#include <sys/socket.h>
+#include "drm.h"
+#include "i915_drm.h"
+#include "drmtest.h"
+#include "intel_chipset.h"
+#include "intel_bufmgr.h"
+#include "intel_gpu_tools.h"
+#include "intel_batchbuffer.h"
+#include "intel_debug.h"
+#include "debug.h"
+
+#define EU_ATT		0x7810
+#define EU_ATT_CLR	0x7830
+
+#define RSVD_EU -1
+#define RSVD_THREAD -1
+#define RSVD_ID EUID(-1, -1, -1)
+
+enum {
+	EBAD_SHMEM,
+	EBAD_PROTOCOL,
+	EBAD_MAGIC,
+	EBAD_WRITE
+};
+
+struct debuggee {
+	int euid;
+	int tid;
+	int fd;
+	int clr;
+	uint32_t reg;
+};
+
+struct debugger {
+	struct debuggee *debuggees;
+	int num_threads;
+	int real_num_threads;
+	int threads_per_eu;
+} *eu_info;
+
+drm_intel_bufmgr *bufmgr;
+struct intel_batchbuffer *batch;
+drm_intel_bo *scratch_bo;
+
+int handle;
+int drm_fd;
+int debug_fd = 0;
+const char *debug_file = "dump_debug.bin";
+int debug;
+int clear_waits;
+int shutting_down = 0;
+struct intel_debug_handshake dh;
+int force_clear = 0;
+uint32_t old_td_ctl;
+
+/*
+ * The docs are wrong about the attention clear bits. The clear bits are
+ * provided as part of the structure in case they change in future generations.
+ */
+#define EUID(eu, td, clear) \
+	{ .euid = eu, .tid = td, .reg = EU_ATT, .fd = -1, .clr = clear }
+#define EUID2(eu, td, clear) \
+	{ .euid = eu, .tid = td, .reg = EU_ATT + 4, .fd = -1, .clr = clear }
+struct debuggee gt1_debug_ids[] = {
+	RSVD_ID, RSVD_ID,
+	RSVD_ID, EUID(6, 3, 28), EUID(6, 2, 27), EUID(6, 1, 26), EUID(6, 0, 25),
+	RSVD_ID, EUID(5, 3, 23), EUID(5, 2, 22), EUID(5, 1, 21), EUID(5, 0, 20),
+	RSVD_ID, EUID(4, 3, 18), EUID(4, 2, 17), EUID(4, 1, 16), EUID(4, 0, 15),
+	RSVD_ID, EUID(2, 3, 13), EUID(2, 2, 12), EUID(2, 1, 11), EUID(2, 0, 10),
+	RSVD_ID, EUID(1, 3, 8), EUID(1, 2, 7), EUID(1, 1, 6), EUID(1, 0, 5),
+	RSVD_ID, EUID(0, 3, 3), EUID(0, 2, 2), EUID(0, 1, 1), EUID(0, 0, 0)
+};
+
+struct debuggee gt2_debug_ids[] = {
+	EUID(8, 1, 31), EUID(8, 0, 30),
+	EUID(6, 4, 29), EUID(6, 3, 28), EUID(6, 2, 27), EUID(6, 1, 26), EUID(6, 0, 25),
+	EUID(5, 4, 24), EUID(5, 3, 23), EUID(5, 2, 22), EUID(5, 1, 21), EUID(5, 0, 20),
+	EUID(4, 4, 19), EUID(4, 3, 18), EUID(4, 2, 17), EUID(4, 1, 16), EUID(4, 0, 15),
+	EUID(2, 4, 14), EUID(2, 3, 13), EUID(2, 2, 12), EUID(2, 1, 11), EUID(2, 0, 10),
+	EUID(1, 4, 9), EUID(1, 3, 8), EUID(1, 2, 7), EUID(1, 1, 6), EUID(1, 0, 5),
+	EUID(0, 4, 4), EUID(0, 3, 3), EUID(0, 2, 2), EUID(0, 1, 1), EUID(0, 0, 0),
+	RSVD_ID, RSVD_ID, RSVD_ID, RSVD_ID,
+	EUID2(14, 4, 27), EUID2(14, 3, 26), EUID2(14, 2, 25), EUID2(14, 1, 24), EUID2(14, 0, 23),
+	EUID2(13, 4, 22), EUID2(13, 3, 21), EUID2(13, 2, 20), EUID2(13, 1, 19), EUID2(13, 0, 18),
+	EUID2(12, 4, 17), EUID2(12, 3, 16), EUID2(12, 2, 15), EUID2(12, 1, 14), EUID2(12, 0, 13),
+	EUID2(10, 4, 12), EUID2(10, 3, 11), EUID2(10, 2, 10), EUID2(10, 1, 9), EUID2(10, 0, 8),
+	EUID2(9, 4, 7), EUID2(9, 3, 6), EUID2(9, 2, 5), EUID2(9, 1, 4), EUID2(9, 0, 3),
+	EUID2(8, 4, 2), EUID2(8, 3, 1), EUID2(8, 2, 0)
+};
+
+struct debugger gt1 = {
+	.debuggees = gt1_debug_ids,
+	.num_threads = 32,
+	.real_num_threads = 24,
+	.threads_per_eu = 4
+};
+
+struct debugger gt2 = {
+	.debuggees = gt2_debug_ids,
+	.num_threads = 64,
+	.real_num_threads = 60,
+	.threads_per_eu = 5
+};
+
+static void
+dump_debug(void *buf, size_t count) {
+	if (!debug_fd)
+		debug_fd = open(debug_file, O_CREAT | O_WRONLY | O_TRUNC, S_IRWXO);
+
+	write(debug_fd, buf, count);
+}
+
+static volatile void *
+map_debug_buffer(void) {
+	int ret;
+
+	ret = drm_intel_bo_map(scratch_bo, 0);
+	assert(ret == 0);
+	return scratch_bo->virtual;
+}
+
+static void
+unmap_debug_buffer(void) {
+	drm_intel_bo_unmap(scratch_bo);
+}
+
+static int
+wait_for_attn(int timeout, int *out_bits) {
+	int step = 1;
+	int eus_waiting = 0;
+	int i,j;
+
+	if (timeout <= 0) {
+		timeout = 1;
+		step = 0;
+	}
+
+	for (i = 0; i < timeout; i += step) {
+		for (j = 0; j < 8; j += 4) {
+			uint32_t attn = intel_register_read(EU_ATT + j);
+			if (attn) {
+				int bit = 0;
+				while( (bit = ffs(attn)) != 0) {
+					bit--; // ffs is 1 based
+					assert(bit >= 0);
+					out_bits[eus_waiting] = bit + (j * 8);
+					attn &= ~(1 << bit);
+					eus_waiting++;
+				}
+			}
+		}
+
+		if (intel_register_read(EU_ATT + 8) ||
+		    intel_register_read(EU_ATT + 0xc)) {
+			fprintf(stderr, "Unknown attention bits\n");
+		}
+
+		if (eus_waiting || shutting_down)
+			break;
+	}
+
+	return eus_waiting;
+}
+
+#define eu_fd(bit) eu_info->debuggees[bit].fd
+#define eu_id(bit) eu_info->debuggees[bit].euid
+#define eu_tid(bit) eu_info->debuggees[bit].tid
+static struct eu_state *
+find_eu_shmem(int bit, volatile uint8_t *buf) {
+	struct per_thread_data {
+		uint8_t ____[dh.per_thread_scratch];
+	}__attribute__((packed)) *data;
+	struct eu_state *eu;
+	int mem_tid, mem_euid, i;
+
+	data = (struct per_thread_data *)buf;
+	for(i = 0; i < eu_info->num_threads; i++) {
+		eu = (struct eu_state *)&data[i];
+		mem_tid = eu->sr0 & 0x7;
+		mem_euid = (eu->sr0 >> 8) & 0xf;
+		if (mem_tid == eu_tid(bit) && mem_euid == eu_id(bit))
+			break;
+		eu = NULL;
+	}
+
+	return eu;
+}
+
+#define GRF_CMP(a, b) memcmp(a, b, sizeof(grf))
+#define GRF_CPY(a, b) memcpy(a, b, sizeof(grf))
+static int
+verify(struct eu_state *eu) {
+	if (GRF_CMP(eu->version, protocol_version)) {
+		if (debug) {
+			printf("Bad EU protocol version %x %x\n",
+				((uint32_t *)&eu->version)[0],
+				DEBUG_PROTOCOL_VERSION);
+			dump_debug((void *)eu, sizeof(*eu));
+		}
+		return -EBAD_PROTOCOL;
+	}
+
+	if (GRF_CMP(eu->state_magic, eu_msg)) {
+		if (debug) {
+			printf("Bad EU state magic %x %x\n",
+				((uint32_t *)&eu->state_magic)[0],
+				((uint32_t *)&eu->state_magic)[1]);
+			dump_debug((void *)eu, sizeof(*eu));
+		}
+		return -EBAD_MAGIC;
+	} else {
+		GRF_CPY(eu->state_magic, cpu_ack);
+	}
+
+	eu->sr0 = RSVD_EU << 8 | RSVD_THREAD;
+	return 0;
+}
+
+static int
+collect_data(int bit, volatile uint8_t *buf) {
+	struct eu_state *eu;
+	ssize_t num;
+	int ret;
+
+	assert(eu_id(bit) != RSVD_EU);
+
+	if (eu_fd(bit) == -1) {
+		char name[128];
+		sprintf(name, "dump_eu_%02d_%d.bin", eu_id(bit), eu_tid(bit));
+		eu_fd(bit) = open(name, O_CREAT | O_WRONLY | O_TRUNC, S_IRWXO);
+		if (eu_fd(bit) == -1)
+			return -1;
+	}
+
+	eu = find_eu_shmem(bit, buf);
+
+	if (eu == NULL) {
+		if (debug)
+			printf("Bad offset %d %d\n", eu_id(bit), eu_tid(bit));
+		return -EBAD_SHMEM;
+	}
+
+	ret = verify(eu);
+	if (ret)
+		return ret;
+
+	num = write(eu_fd(bit), (void *)eu, sizeof(*eu));
+	if (num != sizeof(*eu)) {
+		perror("unhandled write failure");
+		return EBAD_WRITE;
+	}
+
+
+	return 0;
+}
+
+static void
+clear_attn(int bit) {
+#if 0
+/*
+ * This works but doesn't allow for easily changed clearing bits
+ */
+static void
+clear_attn_old(int bit) {
+	int bit_to_clear = bit % 32;
+	bit_to_clear = 31 - bit_to_clear;
+	intel_register_write(0x7830 + (bit/32) * 4, 0);
+	intel_register_write(0x7830 + (bit/32) * 4, 1 << bit_to_clear);
+}
+#else
+	if (!force_clear) {
+		int bit_to_clear;
+		bit_to_clear = eu_info->debuggees[bit].clr;
+		intel_register_write(EU_ATT_CLR + (bit/32) * 4, 0);
+		intel_register_write(EU_ATT_CLR + (bit/32) * 4, 1 << bit_to_clear);
+	} else {
+		intel_register_write(EU_ATT_CLR + 0, 0);
+		intel_register_write(EU_ATT_CLR + 4, 0);
+		intel_register_write(EU_ATT_CLR + 0, 0xffffffff);
+		intel_register_write(EU_ATT_CLR + 4, 0xffffffff);
+	}
+#endif
+}
+
+static void
+db_shutdown(int sig) {
+	shutting_down = 1;
+	printf("Shutting down...\n");
+}
+
+static void
+die(int reason) {
+	int i = 0;
+
+	intel_register_write(EU_ATT_CLR, 0);
+	intel_register_write(EU_ATT_CLR + 4, 0);
+
+	if (debug_fd)
+		close(debug_fd);
+
+	for (i = 0; i < eu_info->num_threads; i++) {
+		if (eu_info->debuggees[i].fd != -1)
+			close(eu_info->debuggees[i].fd);
+	}
+
+	unmap_debug_buffer();
+
+	if (old_td_ctl)
+		intel_register_write(TD_CTL, old_td_ctl);
+	intel_register_access_fini();
+	exit(reason);
+}
+
+static int
+identify_device(int devid) {
+	switch(devid) {
+	case PCI_CHIP_SANDYBRIDGE_GT1:
+	case PCI_CHIP_SANDYBRIDGE_M_GT1:
+	case PCI_CHIP_SANDYBRIDGE_S:
+		eu_info = &gt1;
+		break;
+	case PCI_CHIP_SANDYBRIDGE_GT2:
+	case PCI_CHIP_SANDYBRIDGE_GT2_PLUS:
+	case PCI_CHIP_SANDYBRIDGE_M_GT2:
+	case PCI_CHIP_SANDYBRIDGE_M_GT2_PLUS:
+		eu_info = &gt2;
+		break;
+	default:
+		return 1;
+	}
+
+	return 0;
+}
+
+static void
+parse_data(const char *file_name) {
+	struct eu_state *eu_state = NULL;
+	struct stat st;
+	int fd = -1;
+	int ret, i, elements;
+
+	fd = open(file_name, O_RDONLY);
+	if (fd == -1) {
+		perror("open");
+		goto out;
+	}
+
+	ret = fstat(fd, &st);
+	if (ret == -1) {
+		perror("fstat");
+		goto out;
+	}
+
+	elements = st.st_size / sizeof(struct eu_state);
+	if (elements == 0) {
+		fprintf(stderr, "File not big enough for 1 entry\n");
+		goto out;
+	}
+
+	eu_state = mmap(0, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
+	if (eu_state == MAP_FAILED) {
+		perror("mmap");
+		goto out;
+	}
+
+	for(i = 0; i < elements; i++) {
+		printf("AIP: ");
+			printf("%x\n", ((uint32_t *)eu_state[i].cr0)[2]);
+	}
+out:
+	if (eu_state)
+		munmap(eu_state, st.st_size);
+	if (fd != -1)
+		close(fd);
+}
+
+static int
+wait_for_scratch_bo(void) {
+	struct sockaddr_un addr;
+	uint32_t version;
+	int fd, ret, handle = -1;
+
+	assert(sizeof(version) == sizeof(dh.version));
+
+	fd = socket(AF_UNIX, SOCK_STREAM, 0);
+	if (fd == -1)
+		return -1;
+
+	/* Clean up previous runs */
+	remove(SHADER_DEBUG_SOCKET);
+
+	memset(&addr, 0, sizeof(addr));
+	addr.sun_family = AF_UNIX;
+	strncpy(addr.sun_path, SHADER_DEBUG_SOCKET, sizeof(addr.sun_path) - 1);
+
+	ret = bind(fd, (const struct sockaddr *)&addr, sizeof(addr));
+	if (ret == -1) {
+		perror("listen");
+		return -1;
+	}
+
+	ret = listen(fd, 1);
+	if (ret == -1) {
+		perror("listen");
+		goto done;
+	}
+
+	while(1) {
+		int client_fd;
+		size_t count;
+		char ack[] = DEBUG_HANDSHAKE_ACK;
+
+		client_fd = accept(fd, NULL, NULL);
+		if (client_fd == -1) {
+			perror("accept");
+			goto done;
+		}
+
+		count = read(client_fd, &version, sizeof(version));
+		if (count != sizeof(version)) {
+			perror("read version");
+			goto loop_out;
+		}
+
+		if (version != DEBUG_HANDSHAKE_VERSION) {
+			fprintf(stderr, "Bad debug handshake\n");
+			goto loop_out;
+		}
+
+		count = read(client_fd, ((char *)&dh) + 1, sizeof(dh) - 1);
+		if (count != sizeof(dh) - 1) {
+			perror("read handshake");
+			goto loop_out;
+		}
+
+		count = write(client_fd, ack, sizeof(ack));
+		if (count != sizeof(ack)) {
+			perror("write ack");
+			goto loop_out;
+		}
+		handle = dh.flink_handle;
+		if (debug > 0) {
+			printf("Handshake completed successfully\n"
+				"\tprotocol version = %d\n"
+				"\tflink handle = %d\n"
+				"\tper thread scratch = %x\n", version,
+				dh.flink_handle, dh.per_thread_scratch);
+		}
+
+	loop_out:
+		close(client_fd);
+		break;
+	}
+
+done:
+	close(fd);
+	return handle;
+}
+
+static void
+setup_hw_bits(void)
+{
+	intel_register_write(INST_PM, GEN6_GLOBAL_DEBUG_ENABLE |
+				      GEN6_GLOBAL_DEBUG_ENABLE << 16);
+	old_td_ctl = intel_register_read(GEN6_TD_CTL);
+	intel_register_write(GEN6_TD_CTL, GEN6_TD_CTL_FORCE_TD_BKPT);
+}
+
+int main(int argc, char* argv[]) {
+	struct pci_device *pci_dev;
+	volatile uint8_t *scratch = NULL;
+	int bits[64];
+	int devid = -1, opt;
+
+	while ((opt = getopt(argc, argv, "cdr:pf?h")) != -1) {
+		switch (opt) {
+		case 'c':
+			clear_waits = 1;
+			break;
+		case 'd':
+			debug = 1;
+			break;
+		case 'r':
+			parse_data(optarg);
+			exit(0);
+			break;
+		case 'p':
+			devid = atoi(optarg);
+			break;
+		case 'f':
+			force_clear  = 1;
+			break;
+		case '?':
+		case 'h':
+		default:
+			exit(0);
+		}
+	}
+
+	pci_dev = intel_get_pci_device();
+	if (devid != -1);
+		devid = pci_dev->device_id;
+	if (identify_device(devid)) {
+		abort();
+	}
+
+	assert(intel_register_access_init(pci_dev, 1) == 0);
+
+	memset(bits, -1, sizeof(bits));
+	/*
+	 * These events have to occur before the SR runs, or we need
+	 * non-blocking versions of the functions.
+	 */
+	if (!clear_waits) {
+		int handle;
+		drm_fd = drm_open_any();
+		bufmgr = drm_intel_bufmgr_gem_init(drm_fd, 4096);
+
+		setup_hw_bits();
+
+		/* We are probably root, make files world friendly */
+		umask(0);
+		handle = wait_for_scratch_bo();
+		if (handle == -1) {
+			printf("No handle from mesa, please enter manually: ");
+			if (fscanf(stdin, "%1d", &handle) == 0)
+				exit(1);
+		}
+		scratch_bo = intel_bo_gem_create_from_name(bufmgr, "scratch", handle);
+		if (scratch_bo == NULL) {
+			fprintf(stderr, "Couldn't flink buffer\n");
+			abort();
+		}
+		signal(SIGINT, db_shutdown);
+		printf("Press Ctrl-C to stop\n");
+	} else {
+		int time = force_clear ? 0 : 20000;
+		while (wait_for_attn(time, bits)) {
+			clear_attn(bits[0]);
+			memset(bits, -1, sizeof(bits));
+		}
+		die(0);
+	}
+
+	scratch = map_debug_buffer();
+	while (shutting_down == 0) {
+		int num_events, i;
+
+		memset(bits, -1, sizeof(bits));
+		num_events = wait_for_attn(-1, bits);
+		if (num_events == 0)
+			break;
+
+		for (i = 0; i < num_events; i++) {
+			assert(bits[i] < 64 && bits[i] >= 0);
+			if (collect_data(bits[i], scratch)) {
+				bits[i] = -1;
+				continue;
+			}
+			clear_attn(bits[i]);
+		}
+	}
+
+	die(0);
+	return 0;
+}