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Message-ID: <80bdf40e-bfa9-dae4-2d30-29451e5b8e51@gmail.com>
Date: Tue, 4 Jun 2019 07:46:44 +0200
From: Heiner Kallweit <hkallweit1@...il.com>
To: Realtek linux nic maintainers <nic_swsd@...ltek.com>,
David Miller <davem@...emloft.net>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next 2/2] r8169: factor out firmware handling
Let's factor out firmware handling into a separate source code file.
This simplifies reading the code and makes clearer what the interface
between driver and firmware handling is.
Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
drivers/net/ethernet/realtek/Makefile | 2 +-
drivers/net/ethernet/realtek/r8169_firmware.c | 231 +++++++++++++++++
drivers/net/ethernet/realtek/r8169_firmware.h | 39 +++
drivers/net/ethernet/realtek/r8169_main.c | 243 +-----------------
4 files changed, 274 insertions(+), 241 deletions(-)
create mode 100644 drivers/net/ethernet/realtek/r8169_firmware.c
create mode 100644 drivers/net/ethernet/realtek/r8169_firmware.h
diff --git a/drivers/net/ethernet/realtek/Makefile b/drivers/net/ethernet/realtek/Makefile
index c36cd2167..d5304bad2 100644
--- a/drivers/net/ethernet/realtek/Makefile
+++ b/drivers/net/ethernet/realtek/Makefile
@@ -6,5 +6,5 @@
obj-$(CONFIG_8139CP) += 8139cp.o
obj-$(CONFIG_8139TOO) += 8139too.o
obj-$(CONFIG_ATP) += atp.o
-r8169-objs += r8169_main.o
+r8169-objs += r8169_main.o r8169_firmware.o
obj-$(CONFIG_R8169) += r8169.o
diff --git a/drivers/net/ethernet/realtek/r8169_firmware.c b/drivers/net/ethernet/realtek/r8169_firmware.c
new file mode 100644
index 000000000..8f54a2c83
--- /dev/null
+++ b/drivers/net/ethernet/realtek/r8169_firmware.c
@@ -0,0 +1,231 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* r8169_firmware.c: RealTek 8169/8168/8101 ethernet driver.
+ *
+ * Copyright (c) 2002 ShuChen <shuchen@...ltek.com.tw>
+ * Copyright (c) 2003 - 2007 Francois Romieu <romieu@...zoreil.com>
+ * Copyright (c) a lot of people too. Please respect their work.
+ *
+ * See MAINTAINERS file for support contact information.
+ */
+
+#include <linux/delay.h>
+#include <linux/firmware.h>
+
+#include "r8169_firmware.h"
+
+enum rtl_fw_opcode {
+ PHY_READ = 0x0,
+ PHY_DATA_OR = 0x1,
+ PHY_DATA_AND = 0x2,
+ PHY_BJMPN = 0x3,
+ PHY_MDIO_CHG = 0x4,
+ PHY_CLEAR_READCOUNT = 0x7,
+ PHY_WRITE = 0x8,
+ PHY_READCOUNT_EQ_SKIP = 0x9,
+ PHY_COMP_EQ_SKIPN = 0xa,
+ PHY_COMP_NEQ_SKIPN = 0xb,
+ PHY_WRITE_PREVIOUS = 0xc,
+ PHY_SKIPN = 0xd,
+ PHY_DELAY_MS = 0xe,
+};
+
+struct fw_info {
+ u32 magic;
+ char version[RTL_VER_SIZE];
+ __le32 fw_start;
+ __le32 fw_len;
+ u8 chksum;
+} __packed;
+
+#define FW_OPCODE_SIZE sizeof(typeof(*((struct rtl_fw_phy_action *)0)->code))
+
+static bool rtl_fw_format_ok(struct rtl_fw *rtl_fw)
+{
+ const struct firmware *fw = rtl_fw->fw;
+ struct fw_info *fw_info = (struct fw_info *)fw->data;
+ struct rtl_fw_phy_action *pa = &rtl_fw->phy_action;
+
+ if (fw->size < FW_OPCODE_SIZE)
+ return false;
+
+ if (!fw_info->magic) {
+ size_t i, size, start;
+ u8 checksum = 0;
+
+ if (fw->size < sizeof(*fw_info))
+ return false;
+
+ for (i = 0; i < fw->size; i++)
+ checksum += fw->data[i];
+ if (checksum != 0)
+ return false;
+
+ start = le32_to_cpu(fw_info->fw_start);
+ if (start > fw->size)
+ return false;
+
+ size = le32_to_cpu(fw_info->fw_len);
+ if (size > (fw->size - start) / FW_OPCODE_SIZE)
+ return false;
+
+ strscpy(rtl_fw->version, fw_info->version, RTL_VER_SIZE);
+
+ pa->code = (__le32 *)(fw->data + start);
+ pa->size = size;
+ } else {
+ if (fw->size % FW_OPCODE_SIZE)
+ return false;
+
+ strscpy(rtl_fw->version, rtl_fw->fw_name, RTL_VER_SIZE);
+
+ pa->code = (__le32 *)fw->data;
+ pa->size = fw->size / FW_OPCODE_SIZE;
+ }
+
+ return true;
+}
+
+static bool rtl_fw_data_ok(struct rtl_fw *rtl_fw)
+{
+ struct rtl_fw_phy_action *pa = &rtl_fw->phy_action;
+ size_t index;
+
+ for (index = 0; index < pa->size; index++) {
+ u32 action = le32_to_cpu(pa->code[index]);
+ u32 regno = (action & 0x0fff0000) >> 16;
+
+ switch (action >> 28) {
+ case PHY_READ:
+ case PHY_DATA_OR:
+ case PHY_DATA_AND:
+ case PHY_MDIO_CHG:
+ case PHY_CLEAR_READCOUNT:
+ case PHY_WRITE:
+ case PHY_WRITE_PREVIOUS:
+ case PHY_DELAY_MS:
+ break;
+
+ case PHY_BJMPN:
+ if (regno > index)
+ goto out;
+ break;
+ case PHY_READCOUNT_EQ_SKIP:
+ if (index + 2 >= pa->size)
+ goto out;
+ break;
+ case PHY_COMP_EQ_SKIPN:
+ case PHY_COMP_NEQ_SKIPN:
+ case PHY_SKIPN:
+ if (index + 1 + regno >= pa->size)
+ goto out;
+ break;
+
+ default:
+ dev_err(rtl_fw->dev, "Invalid action 0x%08x\n", action);
+ return false;
+ }
+ }
+
+ return true;
+out:
+ dev_err(rtl_fw->dev, "Out of range of firmware\n");
+ return false;
+}
+
+void rtl_fw_write_firmware(struct rtl8169_private *tp, struct rtl_fw *rtl_fw)
+{
+ struct rtl_fw_phy_action *pa = &rtl_fw->phy_action;
+ rtl_fw_write_t fw_write = rtl_fw->phy_write;
+ rtl_fw_read_t fw_read = rtl_fw->phy_read;
+ int predata = 0, count = 0;
+ size_t index;
+
+ for (index = 0; index < pa->size; index++) {
+ u32 action = le32_to_cpu(pa->code[index]);
+ u32 data = action & 0x0000ffff;
+ u32 regno = (action & 0x0fff0000) >> 16;
+ enum rtl_fw_opcode opcode = action >> 28;
+
+ if (!action)
+ break;
+
+ switch (opcode) {
+ case PHY_READ:
+ predata = fw_read(tp, regno);
+ count++;
+ break;
+ case PHY_DATA_OR:
+ predata |= data;
+ break;
+ case PHY_DATA_AND:
+ predata &= data;
+ break;
+ case PHY_BJMPN:
+ index -= (regno + 1);
+ break;
+ case PHY_MDIO_CHG:
+ if (data == 0) {
+ fw_write = rtl_fw->phy_write;
+ fw_read = rtl_fw->phy_read;
+ } else if (data == 1) {
+ fw_write = rtl_fw->mac_mcu_write;
+ fw_read = rtl_fw->mac_mcu_read;
+ }
+
+ break;
+ case PHY_CLEAR_READCOUNT:
+ count = 0;
+ break;
+ case PHY_WRITE:
+ fw_write(tp, regno, data);
+ break;
+ case PHY_READCOUNT_EQ_SKIP:
+ if (count == data)
+ index++;
+ break;
+ case PHY_COMP_EQ_SKIPN:
+ if (predata == data)
+ index += regno;
+ break;
+ case PHY_COMP_NEQ_SKIPN:
+ if (predata != data)
+ index += regno;
+ break;
+ case PHY_WRITE_PREVIOUS:
+ fw_write(tp, regno, predata);
+ break;
+ case PHY_SKIPN:
+ index += regno;
+ break;
+ case PHY_DELAY_MS:
+ mdelay(data);
+ break;
+ }
+ }
+}
+
+void rtl_fw_release_firmware(struct rtl_fw *rtl_fw)
+{
+ release_firmware(rtl_fw->fw);
+}
+
+int rtl_fw_request_firmware(struct rtl_fw *rtl_fw)
+{
+ int rc;
+
+ rc = request_firmware(&rtl_fw->fw, rtl_fw->fw_name, rtl_fw->dev);
+ if (rc < 0)
+ goto out;
+
+ if (!rtl_fw_format_ok(rtl_fw) || !rtl_fw_data_ok(rtl_fw)) {
+ release_firmware(rtl_fw->fw);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ return 0;
+out:
+ dev_err(rtl_fw->dev, "Unable to load firmware %s (%d)\n",
+ rtl_fw->fw_name, rc);
+ return rc;
+}
diff --git a/drivers/net/ethernet/realtek/r8169_firmware.h b/drivers/net/ethernet/realtek/r8169_firmware.h
new file mode 100644
index 000000000..7dc348ed8
--- /dev/null
+++ b/drivers/net/ethernet/realtek/r8169_firmware.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* r8169_firmware.h: RealTek 8169/8168/8101 ethernet driver.
+ *
+ * Copyright (c) 2002 ShuChen <shuchen@...ltek.com.tw>
+ * Copyright (c) 2003 - 2007 Francois Romieu <romieu@...zoreil.com>
+ * Copyright (c) a lot of people too. Please respect their work.
+ *
+ * See MAINTAINERS file for support contact information.
+ */
+
+#include <linux/device.h>
+#include <linux/firmware.h>
+
+struct rtl8169_private;
+typedef void (*rtl_fw_write_t)(struct rtl8169_private *tp, int reg, int val);
+typedef int (*rtl_fw_read_t)(struct rtl8169_private *tp, int reg);
+
+#define RTL_VER_SIZE 32
+
+struct rtl_fw {
+ rtl_fw_write_t phy_write;
+ rtl_fw_read_t phy_read;
+ rtl_fw_write_t mac_mcu_write;
+ rtl_fw_read_t mac_mcu_read;
+ const struct firmware *fw;
+ const char *fw_name;
+ struct device *dev;
+
+ char version[RTL_VER_SIZE];
+
+ struct rtl_fw_phy_action {
+ __le32 *code;
+ size_t size;
+ } phy_action;
+};
+
+int rtl_fw_request_firmware(struct rtl_fw *rtl_fw);
+void rtl_fw_release_firmware(struct rtl_fw *rtl_fw);
+void rtl_fw_write_firmware(struct rtl8169_private *tp, struct rtl_fw *rtl_fw);
diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 4c8ef7bb9..d34cc855f 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -27,12 +27,13 @@
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
-#include <linux/firmware.h>
#include <linux/prefetch.h>
#include <linux/pci-aspm.h>
#include <linux/ipv6.h>
#include <net/ip6_checksum.h>
+#include "r8169_firmware.h"
+
#define MODULENAME "r8169"
#define FIRMWARE_8168D_1 "rtl_nic/rtl8168d-1.fw"
@@ -626,10 +627,6 @@ struct rtl8169_stats {
struct u64_stats_sync syncp;
};
-struct rtl8169_private;
-typedef void (*rtl_fw_write_t)(struct rtl8169_private *tp, int reg, int val);
-typedef int (*rtl_fw_read_t)(struct rtl8169_private *tp, int reg);
-
struct rtl8169_private {
void __iomem *mmio_addr; /* memory map physical address */
struct pci_dev *pci_dev;
@@ -671,24 +668,7 @@ struct rtl8169_private {
u32 saved_wolopts;
const char *fw_name;
- struct rtl_fw {
- rtl_fw_write_t phy_write;
- rtl_fw_read_t phy_read;
- rtl_fw_write_t mac_mcu_write;
- rtl_fw_read_t mac_mcu_read;
- const struct firmware *fw;
- const char *fw_name;
- struct device *dev;
-
-#define RTL_VER_SIZE 32
-
- char version[RTL_VER_SIZE];
-
- struct rtl_fw_phy_action {
- __le32 *code;
- size_t size;
- } phy_action;
- } *rtl_fw;
+ struct rtl_fw *rtl_fw;
u32 ocp_base;
};
@@ -2300,203 +2280,6 @@ static void __rtl_writephy_batch(struct rtl8169_private *tp,
#define rtl_writephy_batch(tp, a) __rtl_writephy_batch(tp, a, ARRAY_SIZE(a))
-enum rtl_fw_opcode {
- PHY_READ = 0x0,
- PHY_DATA_OR = 0x1,
- PHY_DATA_AND = 0x2,
- PHY_BJMPN = 0x3,
- PHY_MDIO_CHG = 0x4,
- PHY_CLEAR_READCOUNT = 0x7,
- PHY_WRITE = 0x8,
- PHY_READCOUNT_EQ_SKIP = 0x9,
- PHY_COMP_EQ_SKIPN = 0xa,
- PHY_COMP_NEQ_SKIPN = 0xb,
- PHY_WRITE_PREVIOUS = 0xc,
- PHY_SKIPN = 0xd,
- PHY_DELAY_MS = 0xe,
-};
-
-struct fw_info {
- u32 magic;
- char version[RTL_VER_SIZE];
- __le32 fw_start;
- __le32 fw_len;
- u8 chksum;
-} __packed;
-
-#define FW_OPCODE_SIZE sizeof(typeof(*((struct rtl_fw_phy_action *)0)->code))
-
-static bool rtl_fw_format_ok(struct rtl_fw *rtl_fw)
-{
- const struct firmware *fw = rtl_fw->fw;
- struct fw_info *fw_info = (struct fw_info *)fw->data;
- struct rtl_fw_phy_action *pa = &rtl_fw->phy_action;
-
- if (fw->size < FW_OPCODE_SIZE)
- return false;
-
- if (!fw_info->magic) {
- size_t i, size, start;
- u8 checksum = 0;
-
- if (fw->size < sizeof(*fw_info))
- return false;
-
- for (i = 0; i < fw->size; i++)
- checksum += fw->data[i];
- if (checksum != 0)
- return false;
-
- start = le32_to_cpu(fw_info->fw_start);
- if (start > fw->size)
- return false;
-
- size = le32_to_cpu(fw_info->fw_len);
- if (size > (fw->size - start) / FW_OPCODE_SIZE)
- return false;
-
- strscpy(rtl_fw->version, fw_info->version, RTL_VER_SIZE);
-
- pa->code = (__le32 *)(fw->data + start);
- pa->size = size;
- } else {
- if (fw->size % FW_OPCODE_SIZE)
- return false;
-
- strscpy(rtl_fw->version, rtl_fw->fw_name, RTL_VER_SIZE);
-
- pa->code = (__le32 *)fw->data;
- pa->size = fw->size / FW_OPCODE_SIZE;
- }
-
- return true;
-}
-
-static bool rtl_fw_data_ok(struct rtl_fw *rtl_fw)
-{
- struct rtl_fw_phy_action *pa = &rtl_fw->phy_action;
- size_t index;
-
- for (index = 0; index < pa->size; index++) {
- u32 action = le32_to_cpu(pa->code[index]);
- u32 regno = (action & 0x0fff0000) >> 16;
-
- switch (action >> 28) {
- case PHY_READ:
- case PHY_DATA_OR:
- case PHY_DATA_AND:
- case PHY_MDIO_CHG:
- case PHY_CLEAR_READCOUNT:
- case PHY_WRITE:
- case PHY_WRITE_PREVIOUS:
- case PHY_DELAY_MS:
- break;
-
- case PHY_BJMPN:
- if (regno > index)
- goto out;
- break;
- case PHY_READCOUNT_EQ_SKIP:
- if (index + 2 >= pa->size)
- goto out;
- break;
- case PHY_COMP_EQ_SKIPN:
- case PHY_COMP_NEQ_SKIPN:
- case PHY_SKIPN:
- if (index + 1 + regno >= pa->size)
- goto out;
- break;
-
- default:
- dev_err(rtl_fw->dev, "Invalid action 0x%08x\n", action);
- return false;
- }
- }
-
- return true;
-out:
- dev_err(rtl_fw->dev, "Out of range of firmware\n");
- return false;
-}
-
-static void rtl_fw_write_firmware(struct rtl8169_private *tp,
- struct rtl_fw *rtl_fw)
-{
- struct rtl_fw_phy_action *pa = &rtl_fw->phy_action;
- rtl_fw_write_t fw_write = rtl_fw->phy_write;
- rtl_fw_read_t fw_read = rtl_fw->phy_read;
- int predata = 0, count = 0;
- size_t index;
-
- for (index = 0; index < pa->size; index++) {
- u32 action = le32_to_cpu(pa->code[index]);
- u32 data = action & 0x0000ffff;
- u32 regno = (action & 0x0fff0000) >> 16;
- enum rtl_fw_opcode opcode = action >> 28;
-
- if (!action)
- break;
-
- switch (opcode) {
- case PHY_READ:
- predata = fw_read(tp, regno);
- count++;
- break;
- case PHY_DATA_OR:
- predata |= data;
- break;
- case PHY_DATA_AND:
- predata &= data;
- break;
- case PHY_BJMPN:
- index -= (regno + 1);
- break;
- case PHY_MDIO_CHG:
- if (data == 0) {
- fw_write = rtl_fw->phy_write;
- fw_read = rtl_fw->phy_read;
- } else if (data == 1) {
- fw_write = rtl_fw->mac_mcu_write;
- fw_read = rtl_fw->mac_mcu_read;
- }
-
- break;
- case PHY_CLEAR_READCOUNT:
- count = 0;
- break;
- case PHY_WRITE:
- fw_write(tp, regno, data);
- break;
- case PHY_READCOUNT_EQ_SKIP:
- if (count == data)
- index++;
- break;
- case PHY_COMP_EQ_SKIPN:
- if (predata == data)
- index += regno;
- break;
- case PHY_COMP_NEQ_SKIPN:
- if (predata != data)
- index += regno;
- break;
- case PHY_WRITE_PREVIOUS:
- fw_write(tp, regno, predata);
- break;
- case PHY_SKIPN:
- index += regno;
- break;
- case PHY_DELAY_MS:
- mdelay(data);
- break;
- }
- }
-}
-
-static void rtl_fw_release_firmware(struct rtl_fw *rtl_fw)
-{
- release_firmware(rtl_fw->fw);
-}
-
static void rtl_release_firmware(struct rtl8169_private *tp)
{
if (tp->rtl_fw) {
@@ -4254,26 +4037,6 @@ static void rtl_hw_reset(struct rtl8169_private *tp)
rtl_udelay_loop_wait_low(tp, &rtl_chipcmd_cond, 100, 100);
}
-static int rtl_fw_request_firmware(struct rtl_fw *rtl_fw)
-{
- int rc;
-
- rc = request_firmware(&rtl_fw->fw, rtl_fw->fw_name, rtl_fw->dev);
- if (rc < 0)
- goto out;
-
- if (!rtl_fw_format_ok(rtl_fw) || !rtl_fw_data_ok(rtl_fw)) {
- release_firmware(rtl_fw->fw);
- goto out;
- }
-
- return 0;
-out:
- dev_err(rtl_fw->dev, "Unable to load firmware %s (%d)\n",
- rtl_fw->fw_name, rc);
- return rc;
-}
-
static void rtl_request_firmware(struct rtl8169_private *tp)
{
struct rtl_fw *rtl_fw;
--
2.21.0
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