From 007045ac7c9822009b704b856e2f92934cca2401 Mon Sep 17 00:00:00 2001
From: Christian Lamparter <chunkeey@googlemail.com>
Date: Thu, 13 Jan 2011 14:58:41 +0100
Subject: [PATCH] carlu: random number generator test

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---
 tools/carlu/src/cmd.c  | 29 +++++++++++++++++++++++++++++
 tools/carlu/src/cmd.h  |  2 ++
 tools/carlu/src/main.c | 28 ++++++++++++++++++++++++++++
 tools/carlu/src/test.c | 15 +++++++++++++++
 tools/carlu/src/test.h |  1 +
 5 files changed, 75 insertions(+)

diff --git a/tools/carlu/src/cmd.c b/tools/carlu/src/cmd.c
index 81702b3..d77feea 100644
--- a/tools/carlu/src/cmd.c
+++ b/tools/carlu/src/cmd.c
@@ -116,6 +116,35 @@ int carlu_cmd_mem_dump(struct carlu *ar, const uint32_t start,
 	return 0;
 }
 
+int carlu_cmd_mem_watch(struct carlu *ar, const uint32_t mem,
+			const unsigned int len, void *_buf)
+{
+#define RW	8	/* number of words to read at once */
+#define RB	(sizeof(uint32_t) * RW)
+	uint8_t *buf = _buf;
+	unsigned int i, j, block;
+	int err;
+	__le32 offsets[RW];
+
+	for (i = 0; i < (len + RB - 1) / RB; i++) {
+		block = min_t(unsigned int, (len - RB * i) / sizeof(uint32_t), RW);
+		for (j = 0; j < block; j++)
+			offsets[j] = cpu_to_le32(mem);
+
+		err = carlusb_cmd(ar, CARL9170_CMD_RREG,
+				    (void *) &offsets, block * sizeof(uint32_t),
+				    (void *) buf + RB * i, RB);
+
+		if (err)
+			return err;
+	}
+
+#undef RW
+#undef RB
+
+	return 0;
+}
+
 int carlu_cmd_write_mem(struct carlu *ar, const uint32_t addr,
 			const uint32_t val)
 {
diff --git a/tools/carlu/src/cmd.h b/tools/carlu/src/cmd.h
index 72028b3..b201ee4 100644
--- a/tools/carlu/src/cmd.h
+++ b/tools/carlu/src/cmd.h
@@ -32,6 +32,8 @@ int carlu_cmd_mem_dump(struct carlu *ar, const uint32_t start,
 			const unsigned int len, void *_buf);
 int carlu_cmd_write_mem(struct carlu *ar, const uint32_t addr,
 			const uint32_t val);
+int carlu_cmd_mem_watch(struct carlu *ar, const uint32_t mem,
+                        const unsigned int len, void *_buf);
 
 struct carl9170_cmd *carlu_cmd_buf(struct carlu *ar,
 	const enum carl9170_cmd_oids cmd, const unsigned int len);
diff --git a/tools/carlu/src/main.c b/tools/carlu/src/main.c
index 65bcfbc..ffc1407 100644
--- a/tools/carlu/src/main.c
+++ b/tools/carlu/src/main.c
@@ -161,6 +161,33 @@ out:
 	return err ? EXIT_FAILURE : EXIT_SUCCESS;
 }
 
+static int carlu_run_random_test(void)
+{
+	struct carlu *carl = NULL;
+	int err;
+
+	err = carlu_init();
+	if (err)
+		goto out;
+
+	carl = carlusb_probe();
+	if (IS_ERR_OR_NULL(carl)) {
+		err = PTR_ERR(carl);
+		goto out;
+	}
+
+	err = carlu_random_test(carl);
+	if (err)
+		goto out_close;
+
+out_close:
+	carlusb_close(carl);
+
+out:
+	carlu_exit();
+	return err ? EXIT_FAILURE : EXIT_SUCCESS;
+}
+
 static int carlu_run_loop_test(void)
 {
 	struct carlu *carl;
@@ -236,6 +263,7 @@ static const struct menu_struct menu[] = {
 	      MENU_ITEM('p', carlu_probe_all, "probe all possible devices."),
 	      MENU_ITEM('t', carlu_run_loop_test, "run tx/rx test."),
 	      MENU_ITEM('g', carlu_run_gpio_test, "flash the leds."),
+	      MENU_ITEM('r', carlu_run_random_test, "get random numbers."),
 };
 
 static int show_help(void)
diff --git a/tools/carlu/src/test.c b/tools/carlu/src/test.c
index 148f89a..e453eb3 100644
--- a/tools/carlu/src/test.c
+++ b/tools/carlu/src/test.c
@@ -220,3 +220,18 @@ int carlu_gpio_test(struct carlu *ar)
 	CHK(carlu_cmd_read_mem(ar, AR9170_GPIO_REG_PORT_DATA, &gpio));
 	info("GPIO state:%x\n", gpio);
 }
+
+int carlu_random_test(struct carlu *ar)
+{
+	uint32_t buf[4096];
+	int err, i;
+
+	err = carlu_cmd_mem_watch(ar, AR9170_RAND_REG_NUM, sizeof(buf), buf);
+	if (err)
+		return err;
+
+	for (i = 0; i < ARRAY_SIZE(buf); i++)
+		info("%.2x %.2x ", buf[i] & 0xff, buf[i] >> 8);
+
+	info("\n");
+}
diff --git a/tools/carlu/src/test.h b/tools/carlu/src/test.h
index 645b55b..5e4abe9 100644
--- a/tools/carlu/src/test.h
+++ b/tools/carlu/src/test.h
@@ -30,5 +30,6 @@ void carlu_loopback_test(struct carlu *ar, const unsigned int total_runs,
 			 const unsigned int max_len);
 
 int carlu_gpio_test(struct carlu *ar);
+int carlu_random_test(struct carlu *ar);
 
 #endif /* __CARL9170USER_TEST_H */
-- 
2.31.1