xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fm10k: Add interrupt support

Browse Source 
This patch set adds interrupt support for the fm10k interfaces.  The
interfaces themselves only support MSI-X, so neither MSI or legacy
interrupts are used.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck
2014-09-20 19:48:51 -04:00
committed by Jeff Kirsher
parent 504c5eac1d
commit 18283cad0a
4 changed files with 973 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

59
drivers/net/ethernet/intel/fm10k/fm10k.h
View File

@@ -31,6 +31,45 @@
#define FM10K_MAX_JUMBO_FRAME_SIZE 15358 /* Maximum supported size 15K */
struct fm10k_ring_container {
unsigned int total_bytes; /* total bytes processed this int */
unsigned int total_packets; /* total packets processed this int */
u16 work_limit; /* total work allowed per interrupt */
u16 itr; /* interrupt throttle rate value */
u8 count; /* total number of rings in vector */
};
#define FM10K_ITR_MAX 0x0FFF /* maximum value for ITR */
#define FM10K_ITR_10K 100 /* 100us */
#define FM10K_ITR_20K 50 /* 50us */
#define FM10K_ITR_ADAPTIVE 0x8000 /* adaptive interrupt moderation flag */
#define FM10K_ITR_ENABLE (FM10K_ITR_AUTOMASK | FM10K_ITR_MASK_CLEAR)
#define MAX_Q_VECTORS 256
#define MIN_Q_VECTORS 1
enum fm10k_non_q_vectors {
FM10K_MBX_VECTOR,
NON_Q_VECTORS_PF
};
#define NON_Q_VECTORS(hw) (((hw)->mac.type == fm10k_mac_pf) ? \
NON_Q_VECTORS_PF : \
0)
#define MIN_MSIX_COUNT(hw) (MIN_Q_VECTORS + NON_Q_VECTORS(hw))
struct fm10k_q_vector {
struct fm10k_intfc *interface;
u32 __iomem *itr; /* pointer to ITR register for this vector */
u16 v_idx; /* index of q_vector within interface array */
struct fm10k_ring_container rx, tx;
struct napi_struct napi;
char name[IFNAMSIZ + 9];
struct rcu_head rcu; /* to avoid race with update stats on free */
};
enum fm10k_ring_f_enum {
RING_F_RSS,
RING_F_QOS,
@@ -66,15 +105,29 @@ struct fm10k_intfc {
#define FM10K_FLAG_SWPRI_CONFIG (u32)(1 << 4)
int xcast_mode;
/* Tx fast path data */
int num_tx_queues;
u16 tx_itr;
/* Rx fast path data */
int num_rx_queues;
u16 rx_itr;
u64 rx_overrun_pf;
u64 rx_overrun_vf;
/* Queueing vectors */
struct fm10k_q_vector *q_vector[MAX_Q_VECTORS];
struct msix_entry *msix_entries;
int num_q_vectors; /* current number of q_vectors for device */
struct fm10k_ring_feature ring_feature[RING_F_ARRAY_SIZE];
struct fm10k_hw_stats stats;
struct fm10k_hw hw;
u32 __iomem *uc_addr;
u16 msg_enable;
u16 tx_ring_count;
u16 rx_ring_count;
u32 reta[FM10K_RETA_SIZE];
u32 rssrk[FM10K_RSSRK_SIZE];
@@ -126,8 +179,14 @@ static inline int fm10k_mbx_trylock(struct fm10k_intfc *interface)
/* main */
extern char fm10k_driver_name[];
extern const char fm10k_driver_version[];
int fm10k_init_queueing_scheme(struct fm10k_intfc *interface);
void fm10k_clear_queueing_scheme(struct fm10k_intfc *interface);
/* PCI */
void fm10k_mbx_free_irq(struct fm10k_intfc *);
int fm10k_mbx_request_irq(struct fm10k_intfc *);
void fm10k_qv_free_irq(struct fm10k_intfc *interface);
int fm10k_qv_request_irq(struct fm10k_intfc *interface);
int fm10k_register_pci_driver(void);
void fm10k_unregister_pci_driver(void);
void fm10k_up(struct fm10k_intfc *interface);