diff options
author | Tomas Winkler <tomas.winkler@intel.com> | 2013-02-06 13:06:40 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-06 20:23:14 +0100 |
commit | 52c34561415b420301f1580413a9d1891d079494 (patch) | |
tree | cef4f13fd27d9ff22670af73a98d6adc879ba573 /drivers/misc | |
parent | mei: sperate interface and pci code into two files (diff) | |
download | linux-52c34561415b420301f1580413a9d1891d079494.tar.xz linux-52c34561415b420301f1580413a9d1891d079494.zip |
mei: initial extract of ME hw specifics from mei_device
This is initial step of move the ME hw specifics
out of mei_device structure into mei_me_hw
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r-- | drivers/misc/mei/hw-me.c | 131 | ||||
-rw-r--r-- | drivers/misc/mei/hw-me.h | 12 | ||||
-rw-r--r-- | drivers/misc/mei/init.c | 28 | ||||
-rw-r--r-- | drivers/misc/mei/mei_dev.h | 10 | ||||
-rw-r--r-- | drivers/misc/mei/pci-me.c | 21 |
5 files changed, 114 insertions, 88 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 94b203ec9b1f..3bdf22848a91 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -28,10 +28,10 @@ * * returns register value (u32) */ -static inline u32 mei_reg_read(const struct mei_device *dev, +static inline u32 mei_reg_read(const struct mei_me_hw *hw, unsigned long offset) { - return ioread32(dev->mem_addr + offset); + return ioread32(hw->mem_addr + offset); } @@ -42,10 +42,10 @@ static inline u32 mei_reg_read(const struct mei_device *dev, * @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, +static inline void mei_reg_write(const struct mei_me_hw *hw, unsigned long offset, u32 value) { - iowrite32(value, dev->mem_addr + offset); + iowrite32(value, hw->mem_addr + offset); } /** @@ -58,7 +58,7 @@ static inline void mei_reg_write(const struct mei_device *dev, */ u32 mei_mecbrw_read(const struct mei_device *dev) { - return mei_reg_read(dev, ME_CB_RW); + return mei_reg_read(to_me_hw(dev), ME_CB_RW); } /** * mei_mecsr_read - Reads 32bit data from the ME CSR @@ -67,9 +67,9 @@ u32 mei_mecbrw_read(const struct mei_device *dev) * * returns ME_CSR_HA register value (u32) */ -static inline u32 mei_mecsr_read(const struct mei_device *dev) +static inline u32 mei_mecsr_read(const struct mei_me_hw *hw) { - return mei_reg_read(dev, ME_CSR_HA); + return mei_reg_read(hw, ME_CSR_HA); } /** @@ -79,9 +79,9 @@ static inline u32 mei_mecsr_read(const struct mei_device *dev) * * returns H_CSR register value (u32) */ -static inline u32 mei_hcsr_read(const struct mei_device *dev) +static inline u32 mei_hcsr_read(const struct mei_me_hw *hw) { - return mei_reg_read(dev, H_CSR); + return mei_reg_read(hw, H_CSR); } /** @@ -90,10 +90,10 @@ static inline u32 mei_hcsr_read(const struct mei_device *dev) * * @dev: the device structure */ -static inline void mei_hcsr_set(struct mei_device *dev, u32 hcsr) +static inline void mei_hcsr_set(struct mei_me_hw *hw, u32 hcsr) { hcsr &= ~H_IS; - mei_reg_write(dev, H_CSR, hcsr); + mei_reg_write(hw, H_CSR, hcsr); } @@ -104,7 +104,7 @@ static inline void mei_hcsr_set(struct mei_device *dev, u32 hcsr) */ void mei_hw_config(struct mei_device *dev) { - u32 hcsr = mei_hcsr_read(dev); + u32 hcsr = mei_hcsr_read(to_me_hw(dev)); /* Doesn't change in runtime */ dev->hbuf_depth = (hcsr & H_CBD) >> 24; } @@ -115,9 +115,10 @@ void mei_hw_config(struct mei_device *dev) */ void mei_clear_interrupts(struct mei_device *dev) { - u32 hcsr = mei_hcsr_read(dev); + struct mei_me_hw *hw = to_me_hw(dev); + u32 hcsr = mei_hcsr_read(hw); if ((hcsr & H_IS) == H_IS) - mei_reg_write(dev, H_CSR, hcsr); + mei_reg_write(hw, H_CSR, hcsr); } /** @@ -127,9 +128,10 @@ void mei_clear_interrupts(struct mei_device *dev) */ void mei_enable_interrupts(struct mei_device *dev) { - u32 hcsr = mei_hcsr_read(dev); + struct mei_me_hw *hw = to_me_hw(dev); + u32 hcsr = mei_hcsr_read(hw); hcsr |= H_IE; - mei_hcsr_set(dev, hcsr); + mei_hcsr_set(hw, hcsr); } /** @@ -139,9 +141,10 @@ void mei_enable_interrupts(struct mei_device *dev) */ void mei_disable_interrupts(struct mei_device *dev) { - u32 hcsr = mei_hcsr_read(dev); + struct mei_me_hw *hw = to_me_hw(dev); + u32 hcsr = mei_hcsr_read(hw); hcsr &= ~H_IE; - mei_hcsr_set(dev, hcsr); + mei_hcsr_set(hw, hcsr); } /** @@ -152,7 +155,8 @@ void mei_disable_interrupts(struct mei_device *dev) */ void mei_hw_reset(struct mei_device *dev, bool intr_enable) { - u32 hcsr = mei_hcsr_read(dev); + struct mei_me_hw *hw = to_me_hw(dev); + u32 hcsr = mei_hcsr_read(hw); dev_dbg(&dev->pdev->dev, "before reset HCSR = 0x%08x.\n", hcsr); @@ -163,14 +167,14 @@ void mei_hw_reset(struct mei_device *dev, bool intr_enable) else hcsr &= ~H_IE; - mei_hcsr_set(dev, hcsr); + mei_hcsr_set(hw, hcsr); - hcsr = mei_hcsr_read(dev) | H_IG; + hcsr = mei_hcsr_read(hw) | H_IG; hcsr &= ~H_RST; - mei_hcsr_set(dev, hcsr); + mei_hcsr_set(hw, hcsr); - hcsr = mei_hcsr_read(dev); + hcsr = mei_hcsr_read(hw); dev_dbg(&dev->pdev->dev, "current HCSR = 0x%08x.\n", hcsr); } @@ -184,8 +188,9 @@ void mei_hw_reset(struct mei_device *dev, bool intr_enable) void mei_host_set_ready(struct mei_device *dev) { - dev->host_hw_state |= H_IE | H_IG | H_RDY; - mei_hcsr_set(dev, dev->host_hw_state); + struct mei_me_hw *hw = to_me_hw(dev); + hw->host_hw_state |= H_IE | H_IG | H_RDY; + mei_hcsr_set(hw, hw->host_hw_state); } /** * mei_host_is_ready - check whether the host has turned ready @@ -195,8 +200,9 @@ void mei_host_set_ready(struct mei_device *dev) */ bool mei_host_is_ready(struct mei_device *dev) { - dev->host_hw_state = mei_hcsr_read(dev); - return (dev->host_hw_state & H_RDY) == H_RDY; + struct mei_me_hw *hw = to_me_hw(dev); + hw->host_hw_state = mei_hcsr_read(hw); + return (hw->host_hw_state & H_RDY) == H_RDY; } /** @@ -207,8 +213,9 @@ bool mei_host_is_ready(struct mei_device *dev) */ bool mei_me_is_ready(struct mei_device *dev) { - dev->me_hw_state = mei_mecsr_read(dev); - return (dev->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA; + struct mei_me_hw *hw = to_me_hw(dev); + hw->me_hw_state = mei_mecsr_read(hw); + return (hw->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA; } /** @@ -222,13 +229,14 @@ bool mei_me_is_ready(struct mei_device *dev) 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); + struct mei_me_hw *hw = to_me_hw(dev); + u32 csr_reg = mei_hcsr_read(hw); 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); + mei_reg_write(hw, H_CSR, csr_reg); return IRQ_WAKE_THREAD; } @@ -242,12 +250,13 @@ irqreturn_t mei_interrupt_quick_handler(int irq, void *dev_id) */ static unsigned char mei_hbuf_filled_slots(struct mei_device *dev) { + struct mei_me_hw *hw = to_me_hw(dev); char read_ptr, write_ptr; - dev->host_hw_state = mei_hcsr_read(dev); + hw->host_hw_state = mei_hcsr_read(hw); - read_ptr = (char) ((dev->host_hw_state & H_CBRP) >> 8); - write_ptr = (char) ((dev->host_hw_state & H_CBWP) >> 16); + read_ptr = (char) ((hw->host_hw_state & H_CBRP) >> 8); + write_ptr = (char) ((hw->host_hw_state & H_CBWP) >> 16); return (unsigned char) (write_ptr - read_ptr); } @@ -297,6 +306,7 @@ int mei_hbuf_empty_slots(struct mei_device *dev) int mei_write_message(struct mei_device *dev, struct mei_msg_hdr *header, unsigned char *buf) { + struct mei_me_hw *hw = to_me_hw(dev); unsigned long rem, dw_cnt; unsigned long length = header->length; u32 *reg_buf = (u32 *)buf; @@ -313,20 +323,20 @@ int mei_write_message(struct mei_device *dev, struct mei_msg_hdr *header, if (empty_slots < 0 || dw_cnt > empty_slots) return -EIO; - mei_reg_write(dev, H_CB_WW, *((u32 *) header)); + mei_reg_write(hw, H_CB_WW, *((u32 *) header)); for (i = 0; i < length / 4; i++) - mei_reg_write(dev, H_CB_WW, reg_buf[i]); + mei_reg_write(hw, H_CB_WW, reg_buf[i]); rem = length & 0x3; if (rem > 0) { u32 reg = 0; memcpy(®, &buf[length - rem], rem); - mei_reg_write(dev, H_CB_WW, reg); + mei_reg_write(hw, H_CB_WW, reg); } - hcsr = mei_hcsr_read(dev) | H_IG; - mei_hcsr_set(dev, hcsr); + hcsr = mei_hcsr_read(hw) | H_IG; + mei_hcsr_set(hw, hcsr); if (!mei_me_is_ready(dev)) return -EIO; @@ -342,13 +352,14 @@ int mei_write_message(struct mei_device *dev, struct mei_msg_hdr *header, */ int mei_count_full_read_slots(struct mei_device *dev) { + struct mei_me_hw *hw = to_me_hw(dev); char read_ptr, write_ptr; unsigned char buffer_depth, filled_slots; - dev->me_hw_state = mei_mecsr_read(dev); - buffer_depth = (unsigned char)((dev->me_hw_state & ME_CBD_HRA) >> 24); - read_ptr = (char) ((dev->me_hw_state & ME_CBRP_HRA) >> 8); - write_ptr = (char) ((dev->me_hw_state & ME_CBWP_HRA) >> 16); + hw->me_hw_state = mei_mecsr_read(hw); + buffer_depth = (unsigned char)((hw->me_hw_state & ME_CBD_HRA) >> 24); + read_ptr = (char) ((hw->me_hw_state & ME_CBRP_HRA) >> 8); + write_ptr = (char) ((hw->me_hw_state & ME_CBWP_HRA) >> 16); filled_slots = (unsigned char) (write_ptr - read_ptr); /* check for overflow */ @@ -369,6 +380,7 @@ int mei_count_full_read_slots(struct mei_device *dev) void mei_read_slots(struct mei_device *dev, unsigned char *buffer, unsigned long buffer_length) { + struct mei_me_hw *hw = to_me_hw(dev); u32 *reg_buf = (u32 *)buffer; u32 hcsr; @@ -380,7 +392,36 @@ void mei_read_slots(struct mei_device *dev, unsigned char *buffer, memcpy(reg_buf, ®, buffer_length); } - hcsr = mei_hcsr_read(dev) | H_IG; - mei_hcsr_set(dev, hcsr); + hcsr = mei_hcsr_read(hw) | H_IG; + mei_hcsr_set(hw, hcsr); } +/** + * init_mei_device - allocates and initializes the mei device structure + * + * @pdev: The pci device structure + * + * returns The mei_device_device pointer on success, NULL on failure. + */ +struct mei_device *mei_me_dev_init(struct pci_dev *pdev) +{ + struct mei_device *dev; + + dev = kzalloc(sizeof(struct mei_device) + + sizeof(struct mei_me_hw), GFP_KERNEL); + if (!dev) + return NULL; + + mei_device_init(dev); + + INIT_LIST_HEAD(&dev->wd_cl.link); + INIT_LIST_HEAD(&dev->iamthif_cl.link); + mei_io_list_init(&dev->amthif_cmd_list); + mei_io_list_init(&dev->amthif_rd_complete_list); + + INIT_DELAYED_WORK(&dev->timer_work, mei_timer); + INIT_WORK(&dev->init_work, mei_host_client_init); + + dev->pdev = pdev; + return dev; +} diff --git a/drivers/misc/mei/hw-me.h b/drivers/misc/mei/hw-me.h index 73bef545e4d5..53bcc0087e26 100644 --- a/drivers/misc/mei/hw-me.h +++ b/drivers/misc/mei/hw-me.h @@ -21,8 +21,20 @@ #include <linux/mei.h> #include "mei_dev.h" +#include "client.h" +struct mei_me_hw { + void __iomem *mem_addr; + /* + * hw states of host and fw(ME) + */ + u32 host_hw_state; + u32 me_hw_state; +}; +#define to_me_hw(dev) (struct mei_me_hw *)((dev)->hw) + +struct mei_device *mei_me_dev_init(struct pci_dev *pdev); void mei_read_slots(struct mei_device *dev, unsigned char *buffer, diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 5d08db5b314e..1e1876ff25b1 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -42,28 +42,10 @@ const char *mei_dev_state_str(int state) #undef MEI_DEV_STATE } - - - -/** - * init_mei_device - allocates and initializes the mei device structure - * - * @pdev: The pci device structure - * - * returns The mei_device_device pointer on success, NULL on failure. - */ -struct mei_device *mei_device_init(struct pci_dev *pdev) +void mei_device_init(struct mei_device *dev) { - struct mei_device *dev; - - dev = kzalloc(sizeof(struct mei_device), GFP_KERNEL); - if (!dev) - return NULL; - /* setup our list array */ INIT_LIST_HEAD(&dev->file_list); - INIT_LIST_HEAD(&dev->wd_cl.link); - INIT_LIST_HEAD(&dev->iamthif_cl.link); mutex_init(&dev->device_lock); init_waitqueue_head(&dev->wait_recvd_msg); init_waitqueue_head(&dev->wait_stop_wd); @@ -74,14 +56,6 @@ struct mei_device *mei_device_init(struct pci_dev *pdev) mei_io_list_init(&dev->write_waiting_list); mei_io_list_init(&dev->ctrl_wr_list); mei_io_list_init(&dev->ctrl_rd_list); - mei_io_list_init(&dev->amthif_cmd_list); - mei_io_list_init(&dev->amthif_rd_complete_list); - - INIT_DELAYED_WORK(&dev->timer_work, mei_timer); - INIT_WORK(&dev->init_work, mei_host_client_init); - - dev->pdev = pdev; - return dev; } /** diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 3b2bca386e5a..bb759fd9ee4a 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -235,18 +235,13 @@ struct mei_device { struct list_head file_list; long open_handle_count; - void __iomem *mem_addr; /* * lock for the device */ struct mutex device_lock; /* device lock */ struct delayed_work timer_work; /* MEI timer delayed work (timeouts) */ bool recvd_msg; - /* - * hw states of host and fw(ME) - */ - u32 host_hw_state; - u32 me_hw_state; + u8 hbuf_depth; /* * waiting queue for receive message from FW @@ -311,6 +306,7 @@ struct mei_device { bool iamthif_canceled; struct work_struct init_work; + char hw[0] __aligned(sizeof(void *)); }; static inline unsigned long mei_secs_to_jiffies(unsigned long sec) @@ -322,7 +318,7 @@ static inline unsigned long mei_secs_to_jiffies(unsigned long sec) /* * mei init function prototypes */ -struct mei_device *mei_device_init(struct pci_dev *pdev); +void mei_device_init(struct mei_device *dev); void mei_reset(struct mei_device *dev, int interrupts); int mei_hw_init(struct mei_device *dev); diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index eaed398bed6b..27ac71767981 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -90,7 +90,6 @@ MODULE_DEVICE_TABLE(pci, mei_pci_tbl); static DEFINE_MUTEX(mei_mutex); - /** * mei_quirk_probe - probe for devices that doesn't valid ME interface * @pdev: PCI device structure @@ -120,10 +119,10 @@ static bool mei_quirk_probe(struct pci_dev *pdev, * * returns 0 on success, <0 on failure. */ -static int mei_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) +static int mei_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct mei_device *dev; + struct mei_me_hw *hw; int err; mutex_lock(&mei_mutex); @@ -152,14 +151,15 @@ static int mei_probe(struct pci_dev *pdev, goto disable_device; } /* allocates and initializes the mei dev structure */ - dev = mei_device_init(pdev); + dev = mei_me_dev_init(pdev); if (!dev) { err = -ENOMEM; goto release_regions; } + hw = to_me_hw(dev); /* mapping IO device memory */ - dev->mem_addr = pci_iomap(pdev, 0, 0); - if (!dev->mem_addr) { + hw->mem_addr = pci_iomap(pdev, 0, 0); + if (!hw->mem_addr) { dev_err(&pdev->dev, "mapping I/O device memory failure.\n"); err = -ENOMEM; goto free_device; @@ -212,7 +212,7 @@ release_irq: free_irq(pdev->irq, dev); disable_msi: pci_disable_msi(pdev); - pci_iounmap(pdev, dev->mem_addr); + pci_iounmap(pdev, hw->mem_addr); free_device: kfree(dev); release_regions: @@ -236,6 +236,7 @@ end: static void mei_remove(struct pci_dev *pdev) { struct mei_device *dev; + struct mei_me_hw *hw; if (mei_pdev != pdev) return; @@ -244,6 +245,8 @@ static void mei_remove(struct pci_dev *pdev) if (!dev) return; + hw = to_me_hw(dev); + mutex_lock(&dev->device_lock); cancel_delayed_work(&dev->timer_work); @@ -289,8 +292,8 @@ static void mei_remove(struct pci_dev *pdev) pci_disable_msi(pdev); pci_set_drvdata(pdev, NULL); - if (dev->mem_addr) - pci_iounmap(pdev, dev->mem_addr); + if (hw->mem_addr) + pci_iounmap(pdev, hw->mem_addr); kfree(dev); |