From 3a65dd4ea32c3e3a3befec58ad20d1c96580834e Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Tue, 25 Dec 2012 19:06:06 +0200 Subject: [PATCH] mei: move hw dependent functions to interface.c 1. move direct register handling to interface.c and make them static 2. add new function mei_clear_interrupts that wraps direct register access 3. export other functions in mei_dev.h Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/init.c | 3 +- drivers/misc/mei/interface.c | 92 +++++++++++++++++++++++++++++++++++++++++++- drivers/misc/mei/interrupt.c | 24 +----------- drivers/misc/mei/mei_dev.h | 71 +++------------------------------- 4 files changed, 97 insertions(+), 93 deletions(-) diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 08884ef..eb18055 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -142,8 +142,7 @@ int mei_hw_init(struct mei_device *dev) dev->host_hw_state, dev->me_hw_state); /* acknowledge interrupt and stop interupts */ - if ((dev->host_hw_state & H_IS) == H_IS) - mei_reg_write(dev, H_CSR, dev->host_hw_state); + mei_clear_interrupts(dev); /* Doesn't change in runtime */ dev->hbuf_depth = (dev->host_hw_state & H_CBD) >> 24; diff --git a/drivers/misc/mei/interface.c b/drivers/misc/mei/interface.c index 810431e..939d85b 100644 --- a/drivers/misc/mei/interface.c +++ b/drivers/misc/mei/interface.c @@ -20,7 +20,61 @@ #include "mei_dev.h" #include "interface.h" +/** + * mei_reg_read - Reads 32bit data from the mei device + * + * @dev: the device structure + * @offset: offset from which to read the data + * + * returns register value (u32) + */ +static inline u32 mei_reg_read(const struct mei_device *dev, + unsigned long offset) +{ + return ioread32(dev->mem_addr + offset); +} + + +/** + * mei_reg_write - Writes 32bit data to the mei device + * + * @dev: the device structure + * @offset: offset from which to write the data + * @value: register value to write (u32) + */ +static inline void mei_reg_write(const struct mei_device *dev, + unsigned long offset, u32 value) +{ + iowrite32(value, dev->mem_addr + offset); +} +/** + * mei_hcsr_read - Reads 32bit data from the host CSR + * + * @dev: the device structure + * + * returns the byte read. + */ +u32 mei_hcsr_read(const struct mei_device *dev) +{ + return mei_reg_read(dev, H_CSR); +} + +u32 mei_mecbrw_read(const struct mei_device *dev) +{ + return mei_reg_read(dev, ME_CB_RW); +} +/** + * mei_mecsr_read - Reads 32bit data from the ME CSR + * + * @dev: the device structure + * + * returns ME_CSR_HA register value (u32) + */ +u32 mei_mecsr_read(const struct mei_device *dev) +{ + return mei_reg_read(dev, ME_CSR_HA); +} /** * mei_set_csr_register - writes H_CSR register to the mei device, @@ -37,7 +91,18 @@ void mei_hcsr_set(struct mei_device *dev) } /** - * mei_csr_enable_interrupts - enables mei device interrupts + * mei_enable_interrupts - clear and stop interrupts + * + * @dev: the device structure + */ +void mei_clear_interrupts(struct mei_device *dev) +{ + if ((dev->host_hw_state & H_IS) == H_IS) + mei_reg_write(dev, H_CSR, dev->host_hw_state); +} + +/** + * mei_enable_interrupts - enables mei device interrupts * * @dev: the device structure */ @@ -48,7 +113,7 @@ void mei_enable_interrupts(struct mei_device *dev) } /** - * mei_csr_disable_interrupts - disables mei device interrupts + * mei_disable_interrupts - disables mei device interrupts * * @dev: the device structure */ @@ -58,6 +123,29 @@ void mei_disable_interrupts(struct mei_device *dev) mei_hcsr_set(dev); } + +/** + * mei_interrupt_quick_handler - The ISR of the MEI device + * + * @irq: The irq number + * @dev_id: pointer to the device structure + * + * returns irqreturn_t + */ +irqreturn_t mei_interrupt_quick_handler(int irq, void *dev_id) +{ + struct mei_device *dev = (struct mei_device *) dev_id; + u32 csr_reg = mei_hcsr_read(dev); + + if ((csr_reg & H_IS) != H_IS) + return IRQ_NONE; + + /* clear H_IS bit in H_CSR */ + mei_reg_write(dev, H_CSR, csr_reg); + + return IRQ_WAKE_THREAD; +} + /** * mei_hbuf_filled_slots - gets number of device filled buffer slots * diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index 0a020ad..cd89b68 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -28,28 +28,6 @@ /** - * mei_interrupt_quick_handler - The ISR of the MEI device - * - * @irq: The irq number - * @dev_id: pointer to the device structure - * - * returns irqreturn_t - */ -irqreturn_t mei_interrupt_quick_handler(int irq, void *dev_id) -{ - struct mei_device *dev = (struct mei_device *) dev_id; - u32 csr_reg = mei_hcsr_read(dev); - - if ((csr_reg & H_IS) != H_IS) - return IRQ_NONE; - - /* clear H_IS bit in H_CSR */ - mei_reg_write(dev, H_CSR, csr_reg); - - return IRQ_WAKE_THREAD; -} - -/** * _mei_cmpl - processes completed operation. * * @cl: private data of the file object. @@ -1150,7 +1128,7 @@ irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id) /* Ack the interrupt here * In case of MSI we don't go through the quick handler */ if (pci_dev_msi_enabled(dev->pdev)) - mei_reg_write(dev, H_CSR, dev->host_hw_state); + mei_clear_interrupts(dev); dev->me_hw_state = mei_mecsr_read(dev); diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 228a98c..472c9ca 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -440,79 +440,18 @@ int mei_amthif_irq_read(struct mei_device *dev, s32 *slots); * Register Access Function */ -/** - * mei_reg_read - Reads 32bit data from the mei device - * - * @dev: the device structure - * @offset: offset from which to read the data - * - * returns register value (u32) - */ -static inline u32 mei_reg_read(const struct mei_device *dev, - unsigned long offset) -{ - return ioread32(dev->mem_addr + offset); -} - -/** - * mei_reg_write - Writes 32bit data to the mei device - * - * @dev: the device structure - * @offset: offset from which to write the data - * @value: register value to write (u32) - */ -static inline void mei_reg_write(const struct mei_device *dev, - unsigned long offset, u32 value) -{ - iowrite32(value, dev->mem_addr + offset); -} - -/** - * mei_hcsr_read - Reads 32bit data from the host CSR - * - * @dev: the device structure - * - * returns the byte read. - */ -static inline u32 mei_hcsr_read(const struct mei_device *dev) -{ - return mei_reg_read(dev, H_CSR); -} +u32 mei_hcsr_read(const struct mei_device *dev); +u32 mei_mecsr_read(const struct mei_device *dev); +u32 mei_mecbrw_read(const struct mei_device *dev); -/** - * mei_mecsr_read - Reads 32bit data from the ME CSR - * - * @dev: the device structure - * - * returns ME_CSR_HA register value (u32) - */ -static inline u32 mei_mecsr_read(const struct mei_device *dev) -{ - return mei_reg_read(dev, ME_CSR_HA); -} - -/** - * get_me_cb_rw - Reads 32bit data from the mei ME_CB_RW register - * - * @dev: the device structure - * - * returns ME_CB_RW register value (u32) - */ -static inline u32 mei_mecbrw_read(const struct mei_device *dev) -{ - return mei_reg_read(dev, ME_CB_RW); -} - - -/* - * mei interface function prototypes - */ void mei_hcsr_set(struct mei_device *dev); void mei_csr_clear_his(struct mei_device *dev); +void mei_clear_interrupts(struct mei_device *dev); void mei_enable_interrupts(struct mei_device *dev); void mei_disable_interrupts(struct mei_device *dev); + static inline struct mei_msg_hdr *mei_hbm_hdr(u32 *buf, size_t length) { struct mei_msg_hdr *hdr = (struct mei_msg_hdr *)buf; -- 2.7.4