diff options
Diffstat (limited to 'drivers/ntb/ntb_hw.h')
| -rw-r--r-- | drivers/ntb/ntb_hw.h | 39 |
1 files changed, 33 insertions, 6 deletions
diff --git a/drivers/ntb/ntb_hw.h b/drivers/ntb/ntb_hw.h index 6a4f56f564ee..72fcb22d7dd8 100644 --- a/drivers/ntb/ntb_hw.h +++ b/drivers/ntb/ntb_hw.h @@ -68,7 +68,7 @@ #define NTB_HB_TIMEOUT msecs_to_jiffies(1000) -#define NTB_NUM_MW 2 +#define NTB_MAX_NUM_MW 2 enum ntb_hw_event { NTB_EVENT_SW_EVENT0 = 0, @@ -96,11 +96,12 @@ struct ntb_device { struct pci_dev *pdev; struct msix_entry *msix_entries; void __iomem *reg_base; - struct ntb_mw mw[NTB_NUM_MW]; + struct ntb_mw mw[NTB_MAX_NUM_MW]; struct { - unsigned int max_spads; - unsigned int max_db_bits; - unsigned int msix_cnt; + unsigned char max_mw; + unsigned char max_spads; + unsigned char max_db_bits; + unsigned char msix_cnt; } limits; struct { void __iomem *pdb; @@ -132,6 +133,32 @@ struct ntb_device { }; /** + * ntb_max_cbs() - return the max callbacks + * @ndev: pointer to ntb_device instance + * + * Given the ntb pointer, return the maximum number of callbacks + * + * RETURNS: the maximum number of callbacks + */ +static inline unsigned char ntb_max_cbs(struct ntb_device *ndev) +{ + return ndev->max_cbs; +} + +/** + * ntb_max_mw() - return the max number of memory windows + * @ndev: pointer to ntb_device instance + * + * Given the ntb pointer, return the maximum number of memory windows + * + * RETURNS: the maximum number of memory windows + */ +static inline unsigned char ntb_max_mw(struct ntb_device *ndev) +{ + return ndev->limits.max_mw; +} + +/** * ntb_hw_link_status() - return the hardware link status * @ndev: pointer to ntb_device instance * @@ -148,7 +175,7 @@ static inline bool ntb_hw_link_status(struct ntb_device *ndev) * ntb_query_pdev() - return the pci_dev pointer * @ndev: pointer to ntb_device instance * - * Given the ntb pointer return the pci_dev pointerfor the NTB hardware device + * Given the ntb pointer, return the pci_dev pointer for the NTB hardware device * * RETURNS: a pointer to the ntb pci_dev */ |