mptcp/openmptcprouter
1
0
Fork 0
mirror of https://github.com/Ysurac/openmptcprouter.git synced 2025-03-09 15:40:20 +00:00
Code Issues Releases Wiki Activity

Add a directory by kernel instead of a common root, add qnap-301w and rpi4 kernel 6.1 suppport

Browse source
This commit is contained in:
Ycarus (Yannick Chabanois) 2023-04-22 08:07:24 +02:00
parent e910436a7a
commit 46837ec4c0
9459 changed files with 362648 additions and 116345 deletions
Download patch file Download diff file Expand all files Collapse all files

310
5.4/target/linux/rockchip/files/drivers/char/hw_random/rockchip-rng.c Normal file
View file

@ -0,0 +1,310 @@
// SPDX-License-Identifier: GPL-2.0
/*
* rockchip-rng.c Random Number Generator driver for the Rockchip
*
* Copyright (c) 2018, Fuzhou Rockchip Electronics Co., Ltd.
* Author: Lin Jinhan <troy.lin@rock-chips.com>
*
*/
#include <linux/clk.h>
#include <linux/hw_random.h>
#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#define _SBF(s, v) ((v) << (s))
#define HIWORD_UPDATE(val, mask, shift) \
((val) << (shift) | (mask) << ((shift) + 16))
#define ROCKCHIP_AUTOSUSPEND_DELAY 100
#define ROCKCHIP_POLL_PERIOD_US 100
#define ROCKCHIP_POLL_TIMEOUT_US 10000
#define RK_MAX_RNG_BYTE (32)
/* start of CRYPTO V1 register define */
#define CRYPTO_V1_CTRL 0x0008
#define CRYPTO_V1_RNG_START BIT(8)
#define CRYPTO_V1_RNG_FLUSH BIT(9)
#define CRYPTO_V1_TRNG_CTRL 0x0200
#define CRYPTO_V1_OSC_ENABLE BIT(16)
#define CRYPTO_V1_TRNG_SAMPLE_PERIOD(x) (x)
#define CRYPTO_V1_TRNG_DOUT_0 0x0204
/* end of CRYPTO V1 register define */
/* start of CRYPTO V2 register define */
#define CRYPTO_V2_RNG_CTL 0x0400
#define CRYPTO_V2_RNG_64_BIT_LEN _SBF(4, 0x00)
#define CRYPTO_V2_RNG_128_BIT_LEN _SBF(4, 0x01)
#define CRYPTO_V2_RNG_192_BIT_LEN _SBF(4, 0x02)
#define CRYPTO_V2_RNG_256_BIT_LEN _SBF(4, 0x03)
#define CRYPTO_V2_RNG_FATESY_SOC_RING _SBF(2, 0x00)
#define CRYPTO_V2_RNG_SLOWER_SOC_RING_0 _SBF(2, 0x01)
#define CRYPTO_V2_RNG_SLOWER_SOC_RING_1 _SBF(2, 0x02)
#define CRYPTO_V2_RNG_SLOWEST_SOC_RING _SBF(2, 0x03)
#define CRYPTO_V2_RNG_ENABLE BIT(1)
#define CRYPTO_V2_RNG_START BIT(0)
#define CRYPTO_V2_RNG_SAMPLE_CNT 0x0404
#define CRYPTO_V2_RNG_DOUT_0 0x0410
/* end of CRYPTO V2 register define */
struct rk_rng_soc_data {
int (*rk_rng_read)(struct hwrng *rng, void *buf, size_t max, bool wait);
};
struct rk_rng {
struct device *dev;
struct hwrng rng;
void __iomem *mem;
struct rk_rng_soc_data *soc_data;
int clk_num;
struct clk_bulk_data *clk_bulks;
};
static void rk_rng_writel(struct rk_rng *rng, u32 val, u32 offset)
{
__raw_writel(val, rng->mem + offset);
}
static u32 rk_rng_readl(struct rk_rng *rng, u32 offset)
{
return __raw_readl(rng->mem + offset);
}
static int rk_rng_init(struct hwrng *rng)
{
int ret;
struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);
dev_dbg(rk_rng->dev, "clk_bulk_prepare_enable.\n");
ret = clk_bulk_prepare_enable(rk_rng->clk_num, rk_rng->clk_bulks);
if (ret < 0) {
dev_err(rk_rng->dev, "failed to enable clks %d\n", ret);
return ret;
}
return 0;
}
static void rk_rng_cleanup(struct hwrng *rng)
{
struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);
dev_dbg(rk_rng->dev, "clk_bulk_disable_unprepare.\n");
clk_bulk_disable_unprepare(rk_rng->clk_num, rk_rng->clk_bulks);
}
static void rk_rng_read_regs(struct rk_rng *rng, u32 offset, void *buf,
size_t size)
{
u32 i;
for (i = 0; i < size; i += 4)
*(u32 *)(buf + i) = be32_to_cpu(rk_rng_readl(rng, offset + i));
}
static int rk_rng_v1_read(struct hwrng *rng, void *buf, size_t max, bool wait)
{
int ret = 0;
u32 reg_ctrl = 0;
struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);
ret = pm_runtime_get_sync(rk_rng->dev);
if (ret < 0) {
pm_runtime_put_noidle(rk_rng->dev);
return ret;
}
/* enable osc_ring to get entropy, sample period is set as 100 */
reg_ctrl = CRYPTO_V1_OSC_ENABLE | CRYPTO_V1_TRNG_SAMPLE_PERIOD(100);
rk_rng_writel(rk_rng, reg_ctrl, CRYPTO_V1_TRNG_CTRL);
reg_ctrl = HIWORD_UPDATE(CRYPTO_V1_RNG_START, CRYPTO_V1_RNG_START, 0);
rk_rng_writel(rk_rng, reg_ctrl, CRYPTO_V1_CTRL);
ret = readl_poll_timeout(rk_rng->mem + CRYPTO_V1_CTRL, reg_ctrl,
!(reg_ctrl & CRYPTO_V1_RNG_START),
ROCKCHIP_POLL_PERIOD_US,
ROCKCHIP_POLL_TIMEOUT_US);
if (ret < 0)
goto out;
ret = min_t(size_t, max, RK_MAX_RNG_BYTE);
rk_rng_read_regs(rk_rng, CRYPTO_V1_TRNG_DOUT_0, buf, ret);
out:
/* close TRNG */
rk_rng_writel(rk_rng, HIWORD_UPDATE(0, CRYPTO_V1_RNG_START, 0),
CRYPTO_V1_CTRL);
pm_runtime_mark_last_busy(rk_rng->dev);
pm_runtime_put_sync_autosuspend(rk_rng->dev);
return ret;
}
static int rk_rng_v2_read(struct hwrng *rng, void *buf, size_t max, bool wait)
{
int ret = 0;
u32 reg_ctrl = 0;
struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);
ret = pm_runtime_get_sync(rk_rng->dev);
if (ret < 0) {
pm_runtime_put_noidle(rk_rng->dev);
return ret;
}
/* enable osc_ring to get entropy, sample period is set as 100 */
rk_rng_writel(rk_rng, 100, CRYPTO_V2_RNG_SAMPLE_CNT);
reg_ctrl |= CRYPTO_V2_RNG_256_BIT_LEN;
reg_ctrl |= CRYPTO_V2_RNG_SLOWER_SOC_RING_0;
reg_ctrl |= CRYPTO_V2_RNG_ENABLE;
reg_ctrl |= CRYPTO_V2_RNG_START;
rk_rng_writel(rk_rng, HIWORD_UPDATE(reg_ctrl, 0xffff, 0),
CRYPTO_V2_RNG_CTL);
ret = readl_poll_timeout(rk_rng->mem + CRYPTO_V2_RNG_CTL, reg_ctrl,
!(reg_ctrl & CRYPTO_V2_RNG_START),
ROCKCHIP_POLL_PERIOD_US,
ROCKCHIP_POLL_TIMEOUT_US);
if (ret < 0)
goto out;
ret = min_t(size_t, max, RK_MAX_RNG_BYTE);
rk_rng_read_regs(rk_rng, CRYPTO_V2_RNG_DOUT_0, buf, ret);
out:
/* close TRNG */
rk_rng_writel(rk_rng, HIWORD_UPDATE(0, 0xffff, 0), CRYPTO_V2_RNG_CTL);
pm_runtime_mark_last_busy(rk_rng->dev);
pm_runtime_put_sync_autosuspend(rk_rng->dev);
return ret;
}
static const struct rk_rng_soc_data rk_rng_v1_soc_data = {
.rk_rng_read = rk_rng_v1_read,
};
static const struct rk_rng_soc_data rk_rng_v2_soc_data = {
.rk_rng_read = rk_rng_v2_read,
};
static const struct of_device_id rk_rng_dt_match[] = {
{
.compatible = "rockchip,cryptov1-rng",
.data = (void *)&rk_rng_v1_soc_data,
},
{
.compatible = "rockchip,cryptov2-rng",
.data = (void *)&rk_rng_v2_soc_data,
},
{ },
};
MODULE_DEVICE_TABLE(of, rk_rng_dt_match);
static int rk_rng_probe(struct platform_device *pdev)
{
int ret;
struct rk_rng *rk_rng;
struct device_node *np = pdev->dev.of_node;
const struct of_device_id *match;
dev_dbg(&pdev->dev, "probing...\n");
rk_rng = devm_kzalloc(&pdev->dev, sizeof(struct rk_rng), GFP_KERNEL);
if (!rk_rng)
return -ENOMEM;
match = of_match_node(rk_rng_dt_match, np);
rk_rng->soc_data = (struct rk_rng_soc_data *)match->data;
rk_rng->dev = &pdev->dev;
rk_rng->rng.name = "rockchip";
#ifndef CONFIG_PM
rk_rng->rng.init = rk_rng_init;
rk_rng->rng.cleanup = rk_rng_cleanup,
#endif
rk_rng->rng.read = rk_rng->soc_data->rk_rng_read;
rk_rng->rng.quality = 999;
rk_rng->mem = devm_of_iomap(&pdev->dev, pdev->dev.of_node, 0, NULL);
if (IS_ERR(rk_rng->mem))
return PTR_ERR(rk_rng->mem);
rk_rng->clk_num = devm_clk_bulk_get_all(&pdev->dev, &rk_rng->clk_bulks);
if (rk_rng->clk_num < 0) {
dev_err(&pdev->dev, "failed to get clks property\n");
return -ENODEV;
}
platform_set_drvdata(pdev, rk_rng);
pm_runtime_set_autosuspend_delay(&pdev->dev,
ROCKCHIP_AUTOSUSPEND_DELAY);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_enable(&pdev->dev);
ret = devm_hwrng_register(&pdev->dev, &rk_rng->rng);
if (ret) {
pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_disable(&pdev->dev);
}
return ret;
}
#ifdef CONFIG_PM
static int rk_rng_runtime_suspend(struct device *dev)
{
struct rk_rng *rk_rng = dev_get_drvdata(dev);
rk_rng_cleanup(&rk_rng->rng);
return 0;
}
static int rk_rng_runtime_resume(struct device *dev)
{
struct rk_rng *rk_rng = dev_get_drvdata(dev);
return rk_rng_init(&rk_rng->rng);
}
static const struct dev_pm_ops rk_rng_pm_ops = {
SET_RUNTIME_PM_OPS(rk_rng_runtime_suspend,
rk_rng_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
#endif
static struct platform_driver rk_rng_driver = {
.driver = {
.name = "rockchip-rng",
#ifdef CONFIG_PM
.pm = &rk_rng_pm_ops,
#endif
.of_match_table = rk_rng_dt_match,
},
.probe = rk_rng_probe,
};
module_platform_driver(rk_rng_driver);
MODULE_DESCRIPTION("ROCKCHIP H/W Random Number Generator driver");
MODULE_AUTHOR("Lin Jinhan <troy.lin@rock-chips.com>");
MODULE_LICENSE("GPL v2");