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qede: Add basic network device support

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This patch includes the basic Rx/Tx support for the driver [although
carrier will still never be turned on].
Following this patch the driver registers a network device, initializes
it and prepares it for traffic.

Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yuval Mintz 2015-10-26 11:02:29 +02:00 committed by David S. Miller
parent cee4d26448
commit 2950219d87
2 changed files with 1935 additions and 0 deletions
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128
drivers/net/ethernet/qlogic/qede/qede.h
View file

@ -51,6 +51,7 @@ struct qede_dev {
#define QEDE_MAX_TSS_CNT(edev) ((edev)->dev_info.num_queues * \
(edev)->dev_info.num_tc)
struct qede_fastpath *fp_array;
u16 num_rss;
u8 num_tc;
#define QEDE_RSS_CNT(edev) ((edev)->num_rss)
@ -58,6 +59,9 @@ struct qede_dev {
(edev)->num_tc)
#define QEDE_TSS_IDX(edev, txqidx) ((txqidx) % (edev)->num_rss)
#define QEDE_TC_IDX(edev, txqidx) ((txqidx) / (edev)->num_rss)
#define QEDE_TX_QUEUE(edev, txqidx) \
(&(edev)->fp_array[QEDE_TSS_IDX((edev), (txqidx))].txqs[QEDE_TC_IDX( \
(edev), (txqidx))])
struct qed_int_info int_info;
unsigned char primary_mac[ETH_ALEN];
@ -65,9 +69,133 @@ struct qede_dev {
/* Smaller private varaiant of the RTNL lock */
struct mutex qede_lock;
u32 state; /* Protected by qede_lock */
u16 rx_buf_size;
/* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */
#define ETH_OVERHEAD (ETH_HLEN + 8 + 8)
/* Max supported alignment is 256 (8 shift)
* minimal alignment shift 6 is optimal for 57xxx HW performance
*/
#define QEDE_RX_ALIGN_SHIFT max(6, min(8, L1_CACHE_SHIFT))
/* We assume skb_build() uses sizeof(struct skb_shared_info) bytes
* at the end of skb->data, to avoid wasting a full cache line.
* This reduces memory use (skb->truesize).
*/
#define QEDE_FW_RX_ALIGN_END \
max_t(u64, 1UL << QEDE_RX_ALIGN_SHIFT, \
SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))
struct qed_update_vport_rss_params rss_params;
u16 q_num_rx_buffers; /* Must be a power of two */
u16 q_num_tx_buffers; /* Must be a power of two */
};
enum QEDE_STATE {
QEDE_STATE_CLOSED,
QEDE_STATE_OPEN,
};
#define HILO_U64(hi, lo) ((((u64)(hi)) << 32) + (lo))
#define MAX_NUM_TC 8
#define MAX_NUM_PRI 8
/* The driver supports the new build_skb() API:
* RX ring buffer contains pointer to kmalloc() data only,
* skb are built only after the frame was DMA-ed.
*/
struct sw_rx_data {
u8 *data;
DEFINE_DMA_UNMAP_ADDR(mapping);
};
struct qede_rx_queue {
__le16 *hw_cons_ptr;
struct sw_rx_data *sw_rx_ring;
u16 sw_rx_cons;
u16 sw_rx_prod;
struct qed_chain rx_bd_ring;
struct qed_chain rx_comp_ring;
void __iomem *hw_rxq_prod_addr;
int rx_buf_size;
u16 num_rx_buffers;
u16 rxq_id;
u64 rx_hw_errors;
u64 rx_alloc_errors;
};
union db_prod {
struct eth_db_data data;
u32 raw;
};
struct sw_tx_bd {
struct sk_buff *skb;
u8 flags;
/* Set on the first BD descriptor when there is a split BD */
#define QEDE_TSO_SPLIT_BD BIT(0)
};
struct qede_tx_queue {
int index; /* Queue index */
__le16 *hw_cons_ptr;
struct sw_tx_bd *sw_tx_ring;
u16 sw_tx_cons;
u16 sw_tx_prod;
struct qed_chain tx_pbl;
void __iomem *doorbell_addr;
union db_prod tx_db;
u16 num_tx_buffers;
};
#define BD_UNMAP_ADDR(bd) HILO_U64(le32_to_cpu((bd)->addr.hi), \
le32_to_cpu((bd)->addr.lo))
#define BD_SET_UNMAP_ADDR_LEN(bd, maddr, len) \
do { \
(bd)->addr.hi = cpu_to_le32(upper_32_bits(maddr)); \
(bd)->addr.lo = cpu_to_le32(lower_32_bits(maddr)); \
(bd)->nbytes = cpu_to_le16(len); \
} while (0)
#define BD_UNMAP_LEN(bd) (le16_to_cpu((bd)->nbytes))
struct qede_fastpath {
struct qede_dev *edev;
u8 rss_id;
struct napi_struct napi;
struct qed_sb_info *sb_info;
struct qede_rx_queue *rxq;
struct qede_tx_queue *txqs;
#define VEC_NAME_SIZE (sizeof(((struct net_device *)0)->name) + 8)
char name[VEC_NAME_SIZE];
};
/* Debug print definitions */
#define DP_NAME(edev) ((edev)->ndev->name)
#define XMIT_PLAIN 0
#define XMIT_L4_CSUM BIT(0)
#define XMIT_LSO BIT(1)
#define XMIT_ENC BIT(2)
#define QEDE_CSUM_ERROR BIT(0)
#define QEDE_CSUM_UNNECESSARY BIT(1)
#define RX_RING_SIZE_POW 13
#define RX_RING_SIZE BIT(RX_RING_SIZE_POW)
#define NUM_RX_BDS_MAX (RX_RING_SIZE - 1)
#define NUM_RX_BDS_MIN 128
#define NUM_RX_BDS_DEF NUM_RX_BDS_MAX
#define TX_RING_SIZE_POW 13
#define TX_RING_SIZE BIT(TX_RING_SIZE_POW)
#define NUM_TX_BDS_MAX (TX_RING_SIZE - 1)
#define NUM_TX_BDS_MIN 128
#define NUM_TX_BDS_DEF NUM_TX_BDS_MAX
#define for_each_rss(i) for (i = 0; i < edev->num_rss; i++)
#endif /* _QEDE_H_ */

1807
drivers/net/ethernet/qlogic/qede/qede_main.c
View file

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