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,
git.openpandora.org / pandora-kernel.git / blobdiff