diff options
Diffstat (limited to 'drivers/misc/mei/hw-me.c')
| -rw-r--r-- | drivers/misc/mei/hw-me.c | 53 |
1 files changed, 39 insertions, 14 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index a05375a3338a..71216affcab1 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -140,6 +140,19 @@ static inline void mei_hcsr_set(struct mei_device *dev, u32 reg) } /** + * mei_hcsr_set_hig - set host interrupt (set H_IG) + * + * @dev: the device structure + */ +static inline void mei_hcsr_set_hig(struct mei_device *dev) +{ + u32 hcsr; + + hcsr = mei_hcsr_read(dev) | H_IG; + mei_hcsr_set(dev, hcsr); +} + +/** * mei_me_d0i3c_read - Reads 32bit data from the D0I3C register * * @dev: the device structure @@ -381,6 +394,19 @@ static bool mei_me_hw_is_ready(struct mei_device *dev) } /** + * mei_me_hw_is_resetting - check whether the me(hw) is in reset + * + * @dev: mei device + * Return: bool + */ +static bool mei_me_hw_is_resetting(struct mei_device *dev) +{ + u32 mecsr = mei_me_mecsr_read(dev); + + return (mecsr & ME_RST_HRA) == ME_RST_HRA; +} + +/** * mei_me_hw_ready_wait - wait until the me(hw) has turned ready * or timeout is reached * @@ -505,7 +531,6 @@ static int mei_me_hbuf_write(struct mei_device *dev, unsigned long rem; unsigned long length = header->length; u32 *reg_buf = (u32 *)buf; - u32 hcsr; u32 dw_cnt; int i; int empty_slots; @@ -532,8 +557,7 @@ static int mei_me_hbuf_write(struct mei_device *dev, mei_me_hcbww_write(dev, reg); } - hcsr = mei_hcsr_read(dev) | H_IG; - mei_hcsr_set(dev, hcsr); + mei_hcsr_set_hig(dev); if (!mei_me_hw_is_ready(dev)) return -EIO; @@ -580,7 +604,6 @@ static int mei_me_read_slots(struct mei_device *dev, unsigned char *buffer, unsigned long buffer_length) { u32 *reg_buf = (u32 *)buffer; - u32 hcsr; for (; buffer_length >= sizeof(u32); buffer_length -= sizeof(u32)) *reg_buf++ = mei_me_mecbrw_read(dev); @@ -591,8 +614,7 @@ static int mei_me_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); + mei_hcsr_set_hig(dev); return 0; } @@ -1189,7 +1211,7 @@ irqreturn_t mei_me_irq_quick_handler(int irq, void *dev_id) irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) { struct mei_device *dev = (struct mei_device *) dev_id; - struct mei_cl_cb complete_list; + struct list_head cmpl_list; s32 slots; u32 hcsr; int rets = 0; @@ -1201,7 +1223,7 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) hcsr = mei_hcsr_read(dev); me_intr_clear(dev, hcsr); - mei_io_list_init(&complete_list); + INIT_LIST_HEAD(&cmpl_list); /* check if ME wants a reset */ if (!mei_hw_is_ready(dev) && dev->dev_state != MEI_DEV_RESETTING) { @@ -1210,6 +1232,9 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) goto end; } + if (mei_me_hw_is_resetting(dev)) + mei_hcsr_set_hig(dev); + mei_me_pg_intr(dev, me_intr_src(hcsr)); /* check if we need to start the dev */ @@ -1227,7 +1252,7 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) slots = mei_count_full_read_slots(dev); while (slots > 0) { dev_dbg(dev->dev, "slots to read = %08x\n", slots); - rets = mei_irq_read_handler(dev, &complete_list, &slots); + rets = mei_irq_read_handler(dev, &cmpl_list, &slots); /* There is a race between ME write and interrupt delivery: * Not all data is always available immediately after the * interrupt, so try to read again on the next interrupt. @@ -1252,11 +1277,11 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) */ if (dev->pg_event != MEI_PG_EVENT_WAIT && dev->pg_event != MEI_PG_EVENT_RECEIVED) { - rets = mei_irq_write_handler(dev, &complete_list); + rets = mei_irq_write_handler(dev, &cmpl_list); dev->hbuf_is_ready = mei_hbuf_is_ready(dev); } - mei_irq_compl_handler(dev, &complete_list); + mei_irq_compl_handler(dev, &cmpl_list); end: dev_dbg(dev->dev, "interrupt thread end ret = %d\n", rets); @@ -1389,7 +1414,7 @@ const struct mei_cfg mei_me_pch8_sps_cfg = { * @pdev: The pci device structure * @cfg: per device generation config * - * Return: The mei_device_device pointer on success, NULL on failure. + * Return: The mei_device pointer on success, NULL on failure. */ struct mei_device *mei_me_dev_init(struct pci_dev *pdev, const struct mei_cfg *cfg) @@ -1397,8 +1422,8 @@ struct mei_device *mei_me_dev_init(struct pci_dev *pdev, struct mei_device *dev; struct mei_me_hw *hw; - dev = kzalloc(sizeof(struct mei_device) + - sizeof(struct mei_me_hw), GFP_KERNEL); + dev = devm_kzalloc(&pdev->dev, sizeof(struct mei_device) + + sizeof(struct mei_me_hw), GFP_KERNEL); if (!dev) return NULL; hw = to_me_hw(dev); |