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openwrt/package/kernel/mac80211/patches/rt2x00/602-rt2x00-introduce-rt2x00eeprom.patch
Daniel Golle 91c84e87c2 mac80211: rt2x00: clear IV's on start to fix AP mode regression 
To do not brake HW restart we should keep initialization vectors data.
I assumed that on start the data is already initialized to zeros, but
that not true on some scenarios and we should clear it. So add
additional flag to check if we are under HW restart and clear IV's
data if we are not.

Patch fixes AP mode regression.

Patch pending on linux-wireless and imported from patchwork.

Fixes: 0b2c42ced2 ("mac80211: Update to version 5.2-rc7")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2019-08-19 13:46:00 +02:00

297 lines
8.1 KiB
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--- a/local-symbols
+++ b/local-symbols
@@ -313,6 +313,7 @@ RT2X00_LIB_FIRMWARE=
RT2X00_LIB_CRYPTO=
RT2X00_LIB_LEDS=
RT2X00_LIB_DEBUGFS=
+RT2X00_LIB_EEPROM=
RT2X00_DEBUG=
WLAN_VENDOR_REALTEK=
RTL8180=
--- a/drivers/net/wireless/ralink/rt2x00/Kconfig
+++ b/drivers/net/wireless/ralink/rt2x00/Kconfig
@@ -70,6 +70,7 @@ config RT2800PCI
select RT2X00_LIB_MMIO
select RT2X00_LIB_PCI
select RT2X00_LIB_FIRMWARE
+ select RT2X00_LIB_EEPROM
select RT2X00_LIB_CRYPTO
depends on CRC_CCITT
depends on EEPROM_93CX6
@@ -216,6 +217,7 @@ config RT2800SOC
select RT2X00_LIB_MMIO
select RT2X00_LIB_CRYPTO
select RT2X00_LIB_FIRMWARE
+ select RT2X00_LIB_EEPROM
select RT2800_LIB
select RT2800_LIB_MMIO
---help---
@@ -266,6 +268,9 @@ config RT2X00_LIB_FIRMWARE
config RT2X00_LIB_CRYPTO
bool
+config RT2X00_LIB_EEPROM
+ bool
+
config RT2X00_LIB_LEDS
bool
default y if (RT2X00_LIB=y && LEDS_CLASS=y) || (RT2X00_LIB=m && LEDS_CLASS!=n)
--- a/drivers/net/wireless/ralink/rt2x00/Makefile
+++ b/drivers/net/wireless/ralink/rt2x00/Makefile
@@ -8,6 +8,7 @@ rt2x00lib-$(CPTCFG_RT2X00_LIB_DEBUGFS) +
rt2x00lib-$(CPTCFG_RT2X00_LIB_CRYPTO) += rt2x00crypto.o
rt2x00lib-$(CPTCFG_RT2X00_LIB_FIRMWARE) += rt2x00firmware.o
rt2x00lib-$(CPTCFG_RT2X00_LIB_LEDS) += rt2x00leds.o
+rt2x00lib-$(CPTCFG_RT2X00_LIB_EEPROM) += rt2x00eeprom.o
obj-$(CPTCFG_RT2X00_LIB) += rt2x00lib.o
obj-$(CPTCFG_RT2X00_LIB_MMIO) += rt2x00mmio.o
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
@@ -37,6 +37,8 @@ struct rt2800_drv_data {
struct ieee80211_sta *wcid_to_sta[STA_IDS_SIZE];
};
+#include "rt2800.h"
+
struct rt2800_ops {
u32 (*register_read)(struct rt2x00_dev *rt2x00dev,
const unsigned int offset);
@@ -135,6 +137,15 @@ static inline int rt2800_read_eeprom(str
{
const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
+ if (rt2x00dev->eeprom_file) {
+ memcpy(rt2x00dev->eeprom, rt2x00dev->eeprom_file->data,
+ EEPROM_SIZE);
+ return 0;
+ }
+
+ if (!rt2800ops->read_eeprom)
+ return -EINVAL;
+
return rt2800ops->read_eeprom(rt2x00dev);
}
--- a/drivers/net/wireless/ralink/rt2x00/rt2800soc.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800soc.c
@@ -90,19 +90,6 @@ static int rt2800soc_set_device_state(st
return retval;
}
-static int rt2800soc_read_eeprom(struct rt2x00_dev *rt2x00dev)
-{
- void __iomem *base_addr = ioremap(0x1F040000, EEPROM_SIZE);
-
- if (!base_addr)
- return -ENOMEM;
-
- memcpy_fromio(rt2x00dev->eeprom, base_addr, EEPROM_SIZE);
-
- iounmap(base_addr);
- return 0;
-}
-
/* Firmware functions */
static char *rt2800soc_get_firmware_name(struct rt2x00_dev *rt2x00dev)
{
@@ -166,7 +153,6 @@ static const struct rt2800_ops rt2800soc
.register_multiread = rt2x00mmio_register_multiread,
.register_multiwrite = rt2x00mmio_register_multiwrite,
.regbusy_read = rt2x00mmio_regbusy_read,
- .read_eeprom = rt2800soc_read_eeprom,
.hwcrypt_disabled = rt2800soc_hwcrypt_disabled,
.drv_write_firmware = rt2800soc_write_firmware,
.drv_init_registers = rt2800mmio_init_registers,
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
@@ -695,6 +695,7 @@ enum rt2x00_capability_flags {
REQUIRE_HT_TX_DESC,
REQUIRE_PS_AUTOWAKE,
REQUIRE_DELAYED_RFKILL,
+ REQUIRE_EEPROM_FILE,
/*
* Capabilities
@@ -971,6 +972,11 @@ struct rt2x00_dev {
const struct firmware *fw;
/*
+ * EEPROM image.
+ */
+ const struct firmware *eeprom_file;
+
+ /*
* FIFO for storing tx status reports between isr and tasklet.
*/
DECLARE_KFIFO_PTR(txstatus_fifo, u32);
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
@@ -1421,6 +1421,10 @@ int rt2x00lib_probe_dev(struct rt2x00_de
INIT_DELAYED_WORK(&rt2x00dev->autowakeup_work, rt2x00lib_autowakeup);
INIT_WORK(&rt2x00dev->sleep_work, rt2x00lib_sleep);
+ retval = rt2x00lib_load_eeprom_file(rt2x00dev);
+ if (retval)
+ goto exit;
+
/*
* Let the driver probe the device to detect the capabilities.
*/
@@ -1564,6 +1568,11 @@ void rt2x00lib_remove_dev(struct rt2x00_
* Free the driver data.
*/
kfree(rt2x00dev->drv_data);
+
+ /*
+ * Free EEPROM image.
+ */
+ rt2x00lib_free_eeprom_file(rt2x00dev);
}
EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev);
--- /dev/null
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c
@@ -0,0 +1,106 @@
+/*
+ Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
+ Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
+ <http://rt2x00.serialmonkey.com>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the
+ Free Software Foundation, Inc.,
+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*
+ Module: rt2x00lib
+ Abstract: rt2x00 eeprom file loading routines.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include "rt2x00.h"
+#include "rt2x00lib.h"
+
+static const char *
+rt2x00lib_get_eeprom_file_name(struct rt2x00_dev *rt2x00dev)
+{
+ struct rt2x00_platform_data *pdata = rt2x00dev->dev->platform_data;
+
+ if (pdata && pdata->eeprom_file_name)
+ return pdata->eeprom_file_name;
+
+ return NULL
+}
+
+static int rt2x00lib_request_eeprom_file(struct rt2x00_dev *rt2x00dev)
+{
+ const struct firmware *ee;
+ const char *ee_name;
+ int retval;
+
+ ee_name = rt2x00lib_get_eeprom_file_name(rt2x00dev);
+ if (!ee_name && test_bit(REQUIRE_EEPROM_FILE, &rt2x00dev->cap_flags)) {
+ rt2x00_err(rt2x00dev, "Required EEPROM name is missing.");
+ return -EINVAL;
+ }
+
+ if (!ee_name)
+ return 0;
+
+ rt2x00_info(rt2x00dev, "Loading EEPROM data from '%s'.\n", ee_name);
+
+ retval = request_firmware(&ee, ee_name, rt2x00dev->dev);
+ if (retval) {
+ rt2x00_err(rt2x00dev, "Failed to request EEPROM.\n");
+ return retval;
+ }
+
+ if (!ee || !ee->size || !ee->data) {
+ rt2x00_err(rt2x00dev, "Failed to read EEPROM file.\n");
+ retval = -ENOENT;
+ goto err_exit;
+ }
+
+ if (ee->size != rt2x00dev->ops->eeprom_size) {
+ rt2x00_err(rt2x00dev,
+ "EEPROM file size is invalid, it should be %d bytes\n",
+ rt2x00dev->ops->eeprom_size);
+ retval = -EINVAL;
+ goto err_release_ee;
+ }
+
+ rt2x00dev->eeprom_file = ee;
+ return 0;
+
+err_release_ee:
+ release_firmware(ee);
+err_exit:
+ return retval;
+}
+
+int rt2x00lib_load_eeprom_file(struct rt2x00_dev *rt2x00dev)
+{
+ int retval;
+
+ retval = rt2x00lib_request_eeprom_file(rt2x00dev);
+ if (retval)
+ return retval;
+
+ return 0;
+}
+
+void rt2x00lib_free_eeprom_file(struct rt2x00_dev *rt2x00dev)
+{
+ if (rt2x00dev->eeprom_file && rt2x00dev->eeprom_file->size)
+ release_firmware(rt2x00dev->eeprom_file);
+ rt2x00dev->eeprom_file = NULL;
+}
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00lib.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00lib.h
@@ -286,6 +286,22 @@ static inline void rt2x00lib_free_firmwa
#endif /* CPTCFG_RT2X00_LIB_FIRMWARE */
/*
+ * EEPROM file handlers.
+ */
+#ifdef CPTCFG_RT2X00_LIB_EEPROM
+int rt2x00lib_load_eeprom_file(struct rt2x00_dev *rt2x00dev);
+void rt2x00lib_free_eeprom_file(struct rt2x00_dev *rt2x00dev);
+#else
+static inline int rt2x00lib_load_eeprom_file(struct rt2x00_dev *rt2x00dev)
+{
+ return 0;
+}
+static inline void rt2x00lib_free_eeprom_file(struct rt2x00_dev *rt2x00dev)
+{
+}
+#endif /* CPTCFG_RT2X00_LIB_EEPROM */
+
+/*
* Debugfs handlers.
*/
#ifdef CPTCFG_RT2X00_LIB_DEBUGFS
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00soc.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00soc.c
@@ -86,6 +86,7 @@ int rt2x00soc_probe(struct platform_devi
if (IS_ERR(rt2x00dev->clk))
rt2x00dev->clk = NULL;
+ set_bit(REQUIRE_EEPROM_FILE, &rt2x00dev->cap_flags);
rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
retval = rt2x00soc_alloc_reg(rt2x00dev);
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