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Revision 6d297540f75d759489054e8b07932208fc4db2cb authored by Rahul Lakkireddy on 11 June 2021, 06:47:47 UTC, committed by David S. Miller on 11 June 2021, 18:15:00 UTC 
cxgb4: halt chip before flashing PHY firmware image
 
When using firmware-assisted PHY firmware image write to flash,
halt the chip before beginning the flash write operation to allow
the running firmware to store the image persistently. Otherwise,
the running firmware will only store the PHY image in local on-chip
RAM, which will be lost after next reset.

Fixes: 4ee339e1e92a ("cxgb4: add support to flash PHY image")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent f046bd0
Raw File
test_bitops.c 
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2020 Intel Corporation
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/init.h>
#include <linux/module.h>
#include <linux/printk.h>

/* a tiny module only meant to test
 *
 *   set/clear_bit
 *   get_count_order/long
 */

/* use an enum because thats the most common BITMAP usage */
enum bitops_fun {
	BITOPS_4 = 4,
	BITOPS_7 = 7,
	BITOPS_11 = 11,
	BITOPS_31 = 31,
	BITOPS_88 = 88,
	BITOPS_LAST = 255,
	BITOPS_LENGTH = 256
};

static DECLARE_BITMAP(g_bitmap, BITOPS_LENGTH);

static unsigned int order_comb[][2] = {
	{0x00000003,  2},
	{0x00000004,  2},
	{0x00001fff, 13},
	{0x00002000, 13},
	{0x50000000, 31},
	{0x80000000, 31},
	{0x80003000, 32},
};

#ifdef CONFIG_64BIT
static unsigned long order_comb_long[][2] = {
	{0x0000000300000000, 34},
	{0x0000000400000000, 34},
	{0x00001fff00000000, 45},
	{0x0000200000000000, 45},
	{0x5000000000000000, 63},
	{0x8000000000000000, 63},
	{0x8000300000000000, 64},
};
#endif

static int __init test_bitops_startup(void)
{
	int i, bit_set;

	pr_info("Starting bitops test\n");
	set_bit(BITOPS_4, g_bitmap);
	set_bit(BITOPS_7, g_bitmap);
	set_bit(BITOPS_11, g_bitmap);
	set_bit(BITOPS_31, g_bitmap);
	set_bit(BITOPS_88, g_bitmap);

	for (i = 0; i < ARRAY_SIZE(order_comb); i++) {
		if (order_comb[i][1] != get_count_order(order_comb[i][0]))
			pr_warn("get_count_order wrong for %x\n",
				       order_comb[i][0]);
	}

	for (i = 0; i < ARRAY_SIZE(order_comb); i++) {
		if (order_comb[i][1] != get_count_order_long(order_comb[i][0]))
			pr_warn("get_count_order_long wrong for %x\n",
				       order_comb[i][0]);
	}

#ifdef CONFIG_64BIT
	for (i = 0; i < ARRAY_SIZE(order_comb_long); i++) {
		if (order_comb_long[i][1] !=
			       get_count_order_long(order_comb_long[i][0]))
			pr_warn("get_count_order_long wrong for %lx\n",
				       order_comb_long[i][0]);
	}
#endif

	barrier();

	clear_bit(BITOPS_4, g_bitmap);
	clear_bit(BITOPS_7, g_bitmap);
	clear_bit(BITOPS_11, g_bitmap);
	clear_bit(BITOPS_31, g_bitmap);
	clear_bit(BITOPS_88, g_bitmap);

	bit_set = find_first_bit(g_bitmap, BITOPS_LAST);
	if (bit_set != BITOPS_LAST)
		pr_err("ERROR: FOUND SET BIT %d\n", bit_set);

	pr_info("Completed bitops test\n");

	return 0;
}

static void __exit test_bitops_unstartup(void)
{
}

module_init(test_bitops_startup);
module_exit(test_bitops_unstartup);

MODULE_AUTHOR("Jesse Brandeburg <jesse.brandeburg@intel.com>, Wei Yang <richard.weiyang@gmail.com>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Bit testing module");
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