diff options
| -rw-r--r-- | drivers/net/wireless/rt2x00/Kconfig | 5 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800lib.c | 244 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800lib.h | 14 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800pci.c | 236 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800usb.c | 223 |
6 files changed, 264 insertions, 459 deletions
diff --git a/drivers/net/wireless/rt2x00/Kconfig b/drivers/net/wireless/rt2x00/Kconfig index 18e5b8e6c34..bf60689aaab 100644 --- a/drivers/net/wireless/rt2x00/Kconfig +++ b/drivers/net/wireless/rt2x00/Kconfig @@ -66,6 +66,7 @@ config RT2800PCI_SOC config RT2800PCI tristate "Ralink rt2800 (PCI/PCMCIA) support (VERY EXPERIMENTAL)" depends on (RT2800PCI_PCI || RT2800PCI_SOC) && EXPERIMENTAL + select RT2800_LIB select RT2X00_LIB_PCI if RT2800PCI_PCI select RT2X00_LIB_SOC if RT2800PCI_SOC select RT2X00_LIB_HT @@ -109,6 +110,7 @@ config RT73USB config RT2800USB tristate "Ralink rt2800 (USB) support (EXPERIMENTAL)" depends on USB && EXPERIMENTAL + select RT2800_LIB select RT2X00_LIB_USB select RT2X00_LIB_HT select RT2X00_LIB_FIRMWARE @@ -124,6 +126,9 @@ config RT2800USB When compiled as a module, this driver will be called "rt2800usb.ko". +config RT2800_LIB + tristate + config RT2X00_LIB_PCI tristate select RT2X00_LIB diff --git a/drivers/net/wireless/rt2x00/Makefile b/drivers/net/wireless/rt2x00/Makefile index 912f5f67e15..97133985829 100644 --- a/drivers/net/wireless/rt2x00/Makefile +++ b/drivers/net/wireless/rt2x00/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_RT2X00_LIB) += rt2x00lib.o obj-$(CONFIG_RT2X00_LIB_PCI) += rt2x00pci.o obj-$(CONFIG_RT2X00_LIB_SOC) += rt2x00soc.o obj-$(CONFIG_RT2X00_LIB_USB) += rt2x00usb.o +obj-$(CONFIG_RT2800_LIB) += rt2800lib.o obj-$(CONFIG_RT2400PCI) += rt2400pci.o obj-$(CONFIG_RT2500PCI) += rt2500pci.o obj-$(CONFIG_RT61PCI) += rt61pci.o diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c new file mode 100644 index 00000000000..3cbe85434ce --- /dev/null +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -0,0 +1,244 @@ +/* + Copyright (C) 2009 Bartlomiej Zolnierkiewicz + + Based on the original rt2800pci.c and rt2800usb.c: + + Copyright (C) 2004 - 2009 rt2x00 SourceForge Project + <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: rt2800lib + Abstract: rt2800 generic device routines. + */ + +#include <linux/kernel.h> +#include <linux/module.h> + +#include "rt2x00.h" +#include "rt2800lib.h" +#include "rt2800.h" + +MODULE_AUTHOR("Bartlomiej Zolnierkiewicz"); +MODULE_DESCRIPTION("rt2800 library"); +MODULE_LICENSE("GPL"); + +/* + * Register access. + * All access to the CSR registers will go through the methods + * rt2800_register_read and rt2800_register_write. + * BBP and RF register require indirect register access, + * and use the CSR registers BBPCSR and RFCSR to achieve this. + * These indirect registers work with busy bits, + * and we will try maximal REGISTER_BUSY_COUNT times to access + * the register while taking a REGISTER_BUSY_DELAY us delay + * between each attampt. When the busy bit is still set at that time, + * the access attempt is considered to have failed, + * and we will print an error. + * The _lock versions must be used if you already hold the csr_mutex + */ +#define WAIT_FOR_BBP(__dev, __reg) \ + rt2800_regbusy_read((__dev), BBP_CSR_CFG, BBP_CSR_CFG_BUSY, (__reg)) +#define WAIT_FOR_RFCSR(__dev, __reg) \ + rt2800_regbusy_read((__dev), RF_CSR_CFG, RF_CSR_CFG_BUSY, (__reg)) +#define WAIT_FOR_RF(__dev, __reg) \ + rt2800_regbusy_read((__dev), RF_CSR_CFG0, RF_CSR_CFG0_BUSY, (__reg)) +#define WAIT_FOR_MCU(__dev, __reg) \ + rt2800_regbusy_read((__dev), H2M_MAILBOX_CSR, \ + H2M_MAILBOX_CSR_OWNER, (__reg)) + +void rt2800_bbp_write(struct rt2x00_dev *rt2x00dev, + const unsigned int word, const u8 value) +{ + u32 reg; + + mutex_lock(&rt2x00dev->csr_mutex); + + /* + * Wait until the BBP becomes available, afterwards we + * can safely write the new data into the register. + */ + if (WAIT_FOR_BBP(rt2x00dev, ®)) { + reg = 0; + rt2x00_set_field32(®, BBP_CSR_CFG_VALUE, value); + rt2x00_set_field32(®, BBP_CSR_CFG_REGNUM, word); + rt2x00_set_field32(®, BBP_CSR_CFG_BUSY, 1); + rt2x00_set_field32(®, BBP_CSR_CFG_READ_CONTROL, 0); + if (rt2x00_intf_is_pci(rt2x00dev)) + rt2x00_set_field32(®, BBP_CSR_CFG_BBP_RW_MODE, 1); + + rt2800_register_write_lock(rt2x00dev, BBP_CSR_CFG, reg); + } + + mutex_unlock(&rt2x00dev->csr_mutex); +} +EXPORT_SYMBOL_GPL(rt2800_bbp_write); + +void rt2800_bbp_read(struct rt2x00_dev *rt2x00dev, + const unsigned int word, u8 *value) +{ + u32 reg; + + mutex_lock(&rt2x00dev->csr_mutex); + + /* + * Wait until the BBP becomes available, afterwards we + * can safely write the read request into the register. + * After the data has been written, we wait until hardware + * returns the correct value, if at any time the register + * doesn't become available in time, reg will be 0xffffffff + * which means we return 0xff to the caller. + */ + if (WAIT_FOR_BBP(rt2x00dev, ®)) { + reg = 0; + rt2x00_set_field32(®, BBP_CSR_CFG_REGNUM, word); + rt2x00_set_field32(®, BBP_CSR_CFG_BUSY, 1); + rt2x00_set_field32(®, BBP_CSR_CFG_READ_CONTROL, 1); + if (rt2x00_intf_is_pci(rt2x00dev)) + rt2x00_set_field32(®, BBP_CSR_CFG_BBP_RW_MODE, 1); + + rt2800_register_write_lock(rt2x00dev, BBP_CSR_CFG, reg); + + WAIT_FOR_BBP(rt2x00dev, ®); + } + + *value = rt2x00_get_field32(reg, BBP_CSR_CFG_VALUE); + + mutex_unlock(&rt2x00dev->csr_mutex); +} +EXPORT_SYMBOL_GPL(rt2800_bbp_read); + +void rt2800_rfcsr_write(struct rt2x00_dev *rt2x00dev, + const unsigned int word, const u8 value) +{ + u32 reg; + + mutex_lock(&rt2x00dev->csr_mutex); + + /* + * Wait until the RFCSR becomes available, afterwards we + * can safely write the new data into the register. + */ + if (WAIT_FOR_RFCSR(rt2x00dev, ®)) { + reg = 0; + rt2x00_set_field32(®, RF_CSR_CFG_DATA, value); + rt2x00_set_field32(®, RF_CSR_CFG_REGNUM, word); + rt2x00_set_field32(®, RF_CSR_CFG_WRITE, 1); + rt2x00_set_field32(®, RF_CSR_CFG_BUSY, 1); + + rt2800_register_write_lock(rt2x00dev, RF_CSR_CFG, reg); + } + + mutex_unlock(&rt2x00dev->csr_mutex); +} +EXPORT_SYMBOL_GPL(rt2800_rfcsr_write); + +void rt2800_rfcsr_read(struct rt2x00_dev *rt2x00dev, + const unsigned int word, u8 *value) +{ + u32 reg; + + mutex_lock(&rt2x00dev->csr_mutex); + + /* + * Wait until the RFCSR becomes available, afterwards we + * can safely write the read request into the register. + * After the data has been written, we wait until hardware + * returns the correct value, if at any time the register + * doesn't become available in time, reg will be 0xffffffff + * which means we return 0xff to the caller. + */ + if (WAIT_FOR_RFCSR(rt2x00dev, ®)) { + reg = 0; + rt2x00_set_field32(®, RF_CSR_CFG_REGNUM, word); + rt2x00_set_field32(®, RF_CSR_CFG_WRITE, 0); + rt2x00_set_field32(®, RF_CSR_CFG_BUSY, 1); + + rt2800_register_write_lock(rt2x00dev, RF_CSR_CFG, reg); + + WAIT_FOR_RFCSR(rt2x00dev, ®); + } + + *value = rt2x00_get_field32(reg, RF_CSR_CFG_DATA); + + mutex_unlock(&rt2x00dev->csr_mutex); +} +EXPORT_SYMBOL_GPL(rt2800_rfcsr_read); + +void rt2800_rf_write(struct rt2x00_dev *rt2x00dev, + const unsigned int word, const u32 value) +{ + u32 reg; + + mutex_lock(&rt2x00dev->csr_mutex); + + /* + * Wait until the RF becomes available, afterwards we + * can safely write the new data into the register. + */ + if (WAIT_FOR_RF(rt2x00dev, ®)) { + reg = 0; + rt2x00_set_field32(®, RF_CSR_CFG0_REG_VALUE_BW, value); + rt2x00_set_field32(®, RF_CSR_CFG0_STANDBYMODE, 0); + rt2x00_set_field32(®, RF_CSR_CFG0_SEL, 0); + rt2x00_set_field32(®, RF_CSR_CFG0_BUSY, 1); + + rt2800_register_write_lock(rt2x00dev, RF_CSR_CFG0, reg); + rt2x00_rf_write(rt2x00dev, word, value); + } + + mutex_unlock(&rt2x00dev->csr_mutex); +} +EXPORT_SYMBOL_GPL(rt2800_rf_write); + +void rt2800_mcu_request(struct rt2x00_dev *rt2x00dev, + const u8 command, const u8 token, + const u8 arg0, const u8 arg1) +{ + u32 reg; + + if (rt2x00_intf_is_pci(rt2x00dev)) { + /* + * RT2880 and RT3052 don't support MCU requests. + */ + if (rt2x00_rt(&rt2x00dev->chip, RT2880) || + rt2x00_rt(&rt2x00dev->chip, RT3052)) + return; + } + + mutex_lock(&rt2x00dev->csr_mutex); + + /* + * Wait until the MCU becomes available, afterwards we + * can safely write the new data into the register. + */ + if (WAIT_FOR_MCU(rt2x00dev, ®)) { + rt2x00_set_field32(®, H2M_MAILBOX_CSR_OWNER, 1); + rt2x00_set_field32(®, H2M_MAILBOX_CSR_CMD_TOKEN, token); + rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG0, arg0); + rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG1, arg1); + rt2800_register_write_lock(rt2x00dev, H2M_MAILBOX_CSR, reg); + + reg = 0; + rt2x00_set_field32(®, HOST_CMD_CSR_HOST_COMMAND, command); + rt2800_register_write_lock(rt2x00dev, HOST_CMD_CSR, reg); + } + + mutex_unlock(&rt2x00dev->csr_mutex); +} +EXPORT_SYMBOL_GPL(rt2800_mcu_request); diff --git a/drivers/net/wireless/rt2x00/rt2800lib.h b/drivers/net/wireless/rt2x00/rt2800lib.h index 17e91fb1a77..40a7f72e87f 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.h +++ b/drivers/net/wireless/rt2x00/rt2800lib.h @@ -96,4 +96,18 @@ static inline int rt2800_regbusy_read(struct rt2x00_dev *rt2x00dev, return rt2800ops->regbusy_read(rt2x00dev, offset, field, reg); } +void rt2800_bbp_write(struct rt2x00_dev *rt2x00dev, + const unsigned int word, const u8 value); +void rt2800_bbp_read(struct rt2x00_dev *rt2x00dev, + const unsigned int word, u8 *value); +void rt2800_rfcsr_write(struct rt2x00_dev *rt2x00dev, + const unsigned int word, const u8 value); +void rt2800_rfcsr_read(struct rt2x00_dev *rt2x00dev, + const unsigned int word, u8 *value); +void rt2800_rf_write(struct rt2x00_dev *rt2x00dev, + const unsigned int word, const u32 value); +void rt2800_mcu_request(struct rt2x00_dev *rt2x00dev, + const u8 command, const u8 token, + const u8 arg0, const u8 arg1); + #endif /* RT2800LIB_H */ diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c index 938f198f356..90ada5d014f 100644 --- a/drivers/net/wireless/rt2x00/rt2800pci.c +++ b/drivers/net/wireless/rt2x00/rt2800pci.c @@ -56,242 +56,6 @@ static int modparam_nohwcrypt = 1; module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO); MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); -/* - * Register access. - * All access to the CSR registers will go through the methods - * rt2800_register_read and rt2800_register_write. - * BBP and RF register require indirect register access, - * and use the CSR registers BBPCSR and RFCSR to achieve this. - * These indirect registers work with busy bits, - * and we will try maximal REGISTER_BUSY_COUNT times to access - * the register while taking a REGISTER_BUSY_DELAY us delay - * between each attampt. When the busy bit is still set at that time, - * the access attempt is considered to have failed, - * and we will print an error. - * The _lock versions must be used if you already hold the csr_mutex - */ -#define WAIT_FOR_BBP(__dev, __reg) \ - rt2800_regbusy_read((__dev), BBP_CSR_CFG, BBP_CSR_CFG_BUSY, (__reg)) -#define WAIT_FOR_RFCSR(__dev, __reg) \ - rt2800_regbusy_read((__dev), RF_CSR_CFG, RF_CSR_CFG_BUSY, (__reg)) -#define WAIT_FOR_RF(__dev, __reg) \ - rt2800_regbusy_read((__dev), RF_CSR_CFG0, RF_CSR_CFG0_BUSY, (__reg)) -#define WAIT_FOR_MCU(__dev, __reg) \ - rt2800_regbusy_read((__dev), H2M_MAILBOX_CSR, \ - H2M_MAILBOX_CSR_OWNER, (__reg)) - -static void rt2800pci_bbp_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u8 value) -{ - u32 reg; - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the BBP becomes available, afterwards we - * can safely write the new data into the register. - */ - if (WAIT_FOR_BBP(rt2x00dev, ®)) { - reg = 0; - rt2x00_set_field32(®, BBP_CSR_CFG_VALUE, value); - rt2x00_set_field32(®, BBP_CSR_CFG_REGNUM, word); - rt2x00_set_field32(®, BBP_CSR_CFG_BUSY, 1); - rt2x00_set_field32(®, BBP_CSR_CFG_READ_CONTROL, 0); - if (rt2x00_intf_is_pci(rt2x00dev)) - rt2x00_set_field32(®, BBP_CSR_CFG_BBP_RW_MODE, 1); - - rt2800_register_write_lock(rt2x00dev, BBP_CSR_CFG, reg); - } - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static void rt2800pci_bbp_read(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u8 *value) -{ - u32 reg; - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the BBP becomes available, afterwards we - * can safely write the read request into the register. - * After the data has been written, we wait until hardware - * returns the correct value, if at any time the register - * doesn't become available in time, reg will be 0xffffffff - * which means we return 0xff to the caller. - */ - if (WAIT_FOR_BBP(rt2x00dev, ®)) { - reg = 0; - rt2x00_set_field32(®, BBP_CSR_CFG_REGNUM, word); - rt2x00_set_field32(®, BBP_CSR_CFG_BUSY, 1); - rt2x00_set_field32(®, BBP_CSR_CFG_READ_CONTROL, 1); - if (rt2x00_intf_is_pci(rt2x00dev)) - rt2x00_set_field32(®, BBP_CSR_CFG_BBP_RW_MODE, 1); - - rt2800_register_write_lock(rt2x00dev, BBP_CSR_CFG, reg); - - WAIT_FOR_BBP(rt2x00dev, ®); - } - - *value = rt2x00_get_field32(reg, BBP_CSR_CFG_VALUE); - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static inline void rt2800_bbp_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u8 value) -{ - rt2800pci_bbp_write(rt2x00dev, word, value); -} - -static inline void rt2800_bbp_read(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u8 *value) -{ - rt2800pci_bbp_read(rt2x00dev, word, value); -} - -static void rt2800pci_rfcsr_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u8 value) -{ - u32 reg; - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the RFCSR becomes available, afterwards we - * can safely write the new data into the register. - */ - if (WAIT_FOR_RFCSR(rt2x00dev, ®)) { - reg = 0; - rt2x00_set_field32(®, RF_CSR_CFG_DATA, value); - rt2x00_set_field32(®, RF_CSR_CFG_REGNUM, word); - rt2x00_set_field32(®, RF_CSR_CFG_WRITE, 1); - rt2x00_set_field32(®, RF_CSR_CFG_BUSY, 1); - - rt2800_register_write_lock(rt2x00dev, RF_CSR_CFG, reg); - } - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static void rt2800pci_rfcsr_read(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u8 *value) -{ - u32 reg; - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the RFCSR becomes available, afterwards we - * can safely write the read request into the register. - * After the data has been written, we wait until hardware - * returns the correct value, if at any time the register - * doesn't become available in time, reg will be 0xffffffff - * which means we return 0xff to the caller. - */ - if (WAIT_FOR_RFCSR(rt2x00dev, ®)) { - reg = 0; - rt2x00_set_field32(®, RF_CSR_CFG_REGNUM, word); - rt2x00_set_field32(®, RF_CSR_CFG_WRITE, 0); - rt2x00_set_field32(®, RF_CSR_CFG_BUSY, 1); - - rt2800_register_write_lock(rt2x00dev, RF_CSR_CFG, reg); - - WAIT_FOR_RFCSR(rt2x00dev, ®); - } - - *value = rt2x00_get_field32(reg, RF_CSR_CFG_DATA); - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static inline void rt2800_rfcsr_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u8 value) -{ - rt2800pci_rfcsr_write(rt2x00dev, word, value); -} - -static inline void rt2800_rfcsr_read(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u8 *value) -{ - rt2800pci_rfcsr_read(rt2x00dev, word, value); -} - -static void rt2800pci_rf_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u32 value) -{ - u32 reg; - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the RF becomes available, afterwards we - * can safely write the new data into the register. - */ - if (WAIT_FOR_RF(rt2x00dev, ®)) { - reg = 0; - rt2x00_set_field32(®, RF_CSR_CFG0_REG_VALUE_BW, value); - rt2x00_set_field32(®, RF_CSR_CFG0_STANDBYMODE, 0); - rt2x00_set_field32(®, RF_CSR_CFG0_SEL, 0); - rt2x00_set_field32(®, RF_CSR_CFG0_BUSY, 1); - - rt2800_register_write_lock(rt2x00dev, RF_CSR_CFG0, reg); - rt2x00_rf_write(rt2x00dev, word, value); - } - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static inline void rt2800_rf_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u32 value) -{ - rt2800pci_rf_write(rt2x00dev, word, value); -} - -static void rt2800pci_mcu_request(struct rt2x00_dev *rt2x00dev, - const u8 command, const u8 token, - const u8 arg0, const u8 arg1) -{ - u32 reg; - - if (rt2x00_intf_is_pci(rt2x00dev)) { - /* - * RT2880 and RT3052 don't support MCU requests. - */ - if (rt2x00_rt(&rt2x00dev->chip, RT2880) || - rt2x00_rt(&rt2x00dev->chip, RT3052)) - return; - } - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the MCU becomes available, afterwards we - * can safely write the new data into the register. - */ - if (WAIT_FOR_MCU(rt2x00dev, ®)) { - rt2x00_set_field32(®, H2M_MAILBOX_CSR_OWNER, 1); - rt2x00_set_field32(®, H2M_MAILBOX_CSR_CMD_TOKEN, token); - rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG0, arg0); - rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG1, arg1); - rt2800_register_write_lock(rt2x00dev, H2M_MAILBOX_CSR, reg); - - reg = 0; - rt2x00_set_field32(®, HOST_CMD_CSR_HOST_COMMAND, command); - rt2800_register_write_lock(rt2x00dev, HOST_CMD_CSR, reg); - } - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static inline void rt2800_mcu_request(struct rt2x00_dev *rt2x00dev, - const u8 command, const u8 token, - const u8 arg0, const u8 arg1) -{ - rt2800pci_mcu_request(rt2x00dev, command, token, arg0, arg1); -} - static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token) { unsigned int i; diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c index 9aee3ab6589..6bd646a979a 100644 --- a/drivers/net/wireless/rt2x00/rt2800usb.c +++ b/drivers/net/wireless/rt2x00/rt2800usb.c @@ -45,229 +45,6 @@ static int modparam_nohwcrypt = 1; module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO); MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); -/* - * Register access. - * All access to the CSR registers will go through the methods - * rt2800_register_read and rt2800_register_write. - * BBP and RF register require indirect register access, - * and use the CSR registers BBPCSR and RFCSR to achieve this. - * These indirect registers work with busy bits, - * and we will try maximal REGISTER_BUSY_COUNT times to access - * the register while taking a REGISTER_BUSY_DELAY us delay - * between each attampt. When the busy bit is still set at that time, - * the access attempt is considered to have failed, - * and we will print an error. - * The _lock versions must be used if you already hold the csr_mutex - */ -#define WAIT_FOR_BBP(__dev, __reg) \ - rt2800_regbusy_read((__dev), BBP_CSR_CFG, BBP_CSR_CFG_BUSY, (__reg)) -#define WAIT_FOR_RFCSR(__dev, __reg) \ - rt2800_regbusy_read((__dev), RF_CSR_CFG, RF_CSR_CFG_BUSY, (__reg)) -#define WAIT_FOR_RF(__dev, __reg) \ - rt2800_regbusy_read((__dev), RF_CSR_CFG0, RF_CSR_CFG0_BUSY, (__reg)) -#define WAIT_FOR_MCU(__dev, __reg) \ - rt2800_regbusy_read((__dev), H2M_MAILBOX_CSR, \ - H2M_MAILBOX_CSR_OWNER, (__reg)) - -static void rt2800usb_bbp_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u8 value) -{ - u32 reg; - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the BBP becomes available, afterwards we - * can safely write the new data into the register. - */ - if (WAIT_FOR_BBP(rt2x00dev, ®)) { - reg = 0; - rt2x00_set_field32(®, BBP_CSR_CFG_VALUE, value); - rt2x00_set_field32(®, BBP_CSR_CFG_REGNUM, word); - rt2x00_set_field32(®, BBP_CSR_CFG_BUSY, 1); - rt2x00_set_field32(®, BBP_CSR_CFG_READ_CONTROL, 0); - - rt2800_register_write_lock(rt2x00dev, BBP_CSR_CFG, reg); - } - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static void rt2800usb_bbp_read(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u8 *value) -{ - u32 reg; - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the BBP becomes available, afterwards we - * can safely write the read request into the register. - * After the data has been written, we wait until hardware - * returns the correct value, if at any time the register - * doesn't become available in time, reg will be 0xffffffff - * which means we return 0xff to the caller. - */ - if (WAIT_FOR_BBP(rt2x00dev, ®)) { - reg = 0; - rt2x00_set_field32(®, BBP_CSR_CFG_REGNUM, word); - rt2x00_set_field32(®, BBP_CSR_CFG_BUSY, 1); - rt2x00_set_field32(®, BBP_CSR_CFG_READ_CONTROL, 1); - - rt2800_register_write_lock(rt2x00dev, BBP_CSR_CFG, reg); - - WAIT_FOR_BBP(rt2x00dev, ®); - } - - *value = rt2x00_get_field32(reg, BBP_CSR_CFG_VALUE); - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static inline void rt2800_bbp_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u8 value) -{ - rt2800usb_bbp_write(rt2x00dev, word, value); -} - -static inline void rt2800_bbp_read(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u8 *value) -{ - rt2800usb_bbp_read(rt2x00dev, word, value); -} - -static void rt2800usb_rfcsr_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u8 value) -{ - u32 reg; - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the RFCSR becomes available, afterwards we - * can safely write the new data into the register. - */ - if (WAIT_FOR_RFCSR(rt2x00dev, ®)) { - reg = 0; - rt2x00_set_field32(®, RF_CSR_CFG_DATA, value); - rt2x00_set_field32(®, RF_CSR_CFG_REGNUM, word); - rt2x00_set_field32(®, RF_CSR_CFG_WRITE, 1); - rt2x00_set_field32(®, RF_CSR_CFG_BUSY, 1); - - rt2800_register_write_lock(rt2x00dev, RF_CSR_CFG, reg); - } - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static void rt2800usb_rfcsr_read(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u8 *value) -{ - u32 reg; - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the RFCSR becomes available, afterwards we - * can safely write the read request into the register. - * After the data has been written, we wait until hardware - * returns the correct value, if at any time the register - * doesn't become available in time, reg will be 0xffffffff - * which means we return 0xff to the caller. - */ - if (WAIT_FOR_RFCSR(rt2x00dev, ®)) { - reg = 0; - rt2x00_set_field32(®, RF_CSR_CFG_REGNUM, word); - rt2x00_set_field32(®, RF_CSR_CFG_WRITE, 0); - rt2x00_set_field32(®, RF_CSR_CFG_BUSY, 1); - - rt2800_register_write_lock(rt2x00dev, RF_CSR_CFG, reg); - - WAIT_FOR_RFCSR(rt2x00dev, ®); - } - - *value = rt2x00_get_field32(reg, RF_CSR_CFG_DATA); - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static inline void rt2800_rfcsr_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u8 value) -{ - rt2800usb_rfcsr_write(rt2x00dev, word, value); -} - -static inline void rt2800_rfcsr_read(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u8 *value) -{ - rt2800usb_rfcsr_read(rt2x00dev, word, value); -} - -static void rt2800usb_rf_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u32 value) -{ - u32 reg; - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the RF becomes available, afterwards we - * can safely write the new data into the register. - */ - if (WAIT_FOR_RF(rt2x00dev, ®)) { - reg = 0; - rt2x00_set_field32(®, RF_CSR_CFG0_REG_VALUE_BW, value); - rt2x00_set_field32(®, RF_CSR_CFG0_STANDBYMODE, 0); - rt2x00_set_field32(®, RF_CSR_CFG0_SEL, 0); - rt2x00_set_field32(®, RF_CSR_CFG0_BUSY, 1); - - rt2800_register_write_lock(rt2x00dev, RF_CSR_CFG0, reg); - rt2x00_rf_write(rt2x00dev, word, value); - } - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static inline void rt2800_rf_write(struct rt2x00_dev *rt2x00dev, - const unsigned int word, const u32 value) -{ - rt2800usb_rf_write(rt2x00dev, word, value); -} - -static void rt2800usb_mcu_request(struct rt2x00_dev *rt2x00dev, - const u8 command, const u8 token, - const u8 arg0, const u8 arg1) -{ - u32 reg; - - mutex_lock(&rt2x00dev->csr_mutex); - - /* - * Wait until the MCU becomes available, afterwards we - * can safely write the new data into the register. - */ - if (WAIT_FOR_MCU(rt2x00dev, ®)) { - rt2x00_set_field32(®, H2M_MAILBOX_CSR_OWNER, 1); - rt2x00_set_field32(®, H2M_MAILBOX_CSR_CMD_TOKEN, token); - rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG0, arg0); - rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG1, arg1); - rt2800_register_write_lock(rt2x00dev, H2M_MAILBOX_CSR, reg); - - reg = 0; - rt2x00_set_field32(®, HOST_CMD_CSR_HOST_COMMAND, command); - rt2800_register_write_lock(rt2x00dev, HOST_CMD_CSR, reg); - } - - mutex_unlock(&rt2x00dev->csr_mutex); -} - -static inline void rt2800_mcu_request(struct rt2x00_dev *rt2x00dev, - const u8 command, const u8 token, - const u8 arg0, const u8 arg1) -{ - rt2800usb_mcu_request(rt2x00dev, command, token, arg0, arg1); -} - #ifdef CONFIG_RT2X00_LIB_DEBUGFS static const struct rt2x00debug rt2800usb_rt2x00debug = { .owner = THIS_MODULE, |