C++ (Cpp) map_word_equal Examples

Example #1

int __xipram cfi_qry_present(struct map_info *map, __u32 base,
			     struct cfi_private *cfi)
{
	int osf = cfi->interleave * cfi->device_type;	/* scale factor */
	map_word val[3];
	map_word qry[3];

	qry[0] = cfi_build_cmd('Q', map, cfi);
	qry[1] = cfi_build_cmd('R', map, cfi);
	qry[2] = cfi_build_cmd('Y', map, cfi);

	val[0] = map_read(map, base + osf*0x10);
	val[1] = map_read(map, base + osf*0x11);
	val[2] = map_read(map, base + osf*0x12);

	if (!map_word_equal(map, qry[0], val[0]))
		return 0;

	if (!map_word_equal(map, qry[1], val[1]))
		return 0;

	if (!map_word_equal(map, qry[2], val[2]))
		return 0;

	return 1; 	/* "QRY" found */
}

Example #2

File: autcpu12-nvram.c Project: AD5GB/kernel_n5_3.10-experimental

static int autcpu12_nvram_probe(struct platform_device *pdev)
{
	map_word tmp, save0, save1;
	struct resource *res;
	struct autcpu12_nvram_priv *priv;

	priv = devm_kzalloc(&pdev->dev,
			    sizeof(struct autcpu12_nvram_priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	platform_set_drvdata(pdev, priv);

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "failed to get memory resource\n");
		return -ENOENT;
	}

	priv->map.bankwidth	= 4;
	priv->map.phys		= res->start;
	priv->map.size		= resource_size(res);
	priv->map.virt = devm_ioremap_resource(&pdev->dev, res);
	strcpy((char *)priv->map.name, res->name);
	if (IS_ERR(priv->map.virt))
		return PTR_ERR(priv->map.virt);

	simple_map_init(&priv->map);

	/*
	 * Check for 32K/128K
	 * read ofs 0
	 * read ofs 0x10000
	 * Write complement to ofs 0x100000
	 * Read	and check result on ofs 0x0
	 * Restore contents
	 */
	save0 = map_read(&priv->map, 0);
	save1 = map_read(&priv->map, 0x10000);
	tmp.x[0] = ~save0.x[0];
	map_write(&priv->map, tmp, 0x10000);
	tmp = map_read(&priv->map, 0);
	/* if we find this pattern on 0x0, we have 32K size */
	if (!map_word_equal(&priv->map, tmp, save0)) {
		map_write(&priv->map, save0, 0x0);
		priv->map.size = SZ_32K;
	} else
		map_write(&priv->map, save1, 0x10000);

	priv->mtd = do_map_probe("map_ram", &priv->map);
	if (!priv->mtd) {
		dev_err(&pdev->dev, "probing failed\n");
		return -ENXIO;
	}

	priv->mtd->owner	= THIS_MODULE;
	priv->mtd->erasesize	= 16;
	priv->mtd->dev.parent	= &pdev->dev;
	if (!mtd_device_register(priv->mtd, NULL, 0)) {
		dev_info(&pdev->dev,
			 "NV-RAM device size %ldKiB registered on AUTCPU12\n",
			 priv->map.size / SZ_1K);
		return 0;
	}

	map_destroy(priv->mtd);
	dev_err(&pdev->dev, "NV-RAM device addition failed\n");
	return -ENOMEM;
}

Example #3

File: autcpu12-nvram.c Project: 0xroot/Blackphone-BP1-Kernel

static int __init init_autcpu12_sram (void)
{
	map_word tmp, save0, save1;
	int err;

	autcpu12_sram_map.virt = ioremap(0x12000000, SZ_128K);
	if (!autcpu12_sram_map.virt) {
		printk("Failed to ioremap autcpu12 NV-RAM space\n");
		err = -EIO;
		goto out;
	}
	simple_map_init(&autcpu12_sram_map);

	/*
	 * Check for 32K/128K
	 * read ofs 0
	 * read ofs 0x10000
	 * Write complement to ofs 0x100000
	 * Read	and check result on ofs 0x0
	 * Restore contents
	 */
	save0 = map_read(&autcpu12_sram_map, 0);
	save1 = map_read(&autcpu12_sram_map, 0x10000);
	tmp.x[0] = ~save0.x[0];
	map_write(&autcpu12_sram_map, tmp, 0x10000);
	/* if we find this pattern on 0x0, we have 32K size
	 * restore contents and exit
	 */
	tmp = map_read(&autcpu12_sram_map, 0);
	if (!map_word_equal(&autcpu12_sram_map, tmp, save0)) {
		map_write(&autcpu12_sram_map, save0, 0x0);
		goto map;
	}
	/* We have a 128K found, restore 0x10000 and set size
	 * to 128K
	 */
	map_write(&autcpu12_sram_map, save1, 0x10000);
	autcpu12_sram_map.size = SZ_128K;

map:
	sram_mtd = do_map_probe("map_ram", &autcpu12_sram_map);
	if (!sram_mtd) {
		printk("NV-RAM probe failed\n");
		err = -ENXIO;
		goto out_ioremap;
	}

	sram_mtd->owner = THIS_MODULE;
	sram_mtd->erasesize = 16;

	if (mtd_device_register(sram_mtd, NULL, 0)) {
		printk("NV-RAM device addition failed\n");
		err = -ENOMEM;
		goto out_probe;
	}

	printk("NV-RAM device size %ldKiB registered on AUTCPU12\n",autcpu12_sram_map.size/SZ_1K);

	return 0;

out_probe:
	map_destroy(sram_mtd);
	sram_mtd = 0;

out_ioremap:
	iounmap((void *)autcpu12_sram_map.virt);
out:
	return err;
}