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39 #include <rte_mempool.h>
40 #include <rte_malloc.h>
41 #include <rte_spinlock.h>
42 #include "fm10k_logs.h"
43 #include "base/fm10k_type.h"
45 /* descriptor ring base addresses must be aligned to the following */
46 #define FM10K_ALIGN_RX_DESC 128
47 #define FM10K_ALIGN_TX_DESC 128
49 /* The maximum packet size that FM10K supports */
50 #define FM10K_MAX_PKT_SIZE (15 * 1024)
52 /* Minimum size of RX buffer FM10K supported */
53 #define FM10K_MIN_RX_BUF_SIZE 256
55 /* The maximum of SRIOV VFs per port supported */
56 #define FM10K_MAX_VF_NUM 64
58 /* number of descriptors must be a multiple of the following */
59 #define FM10K_MULT_RX_DESC FM10K_REQ_RX_DESCRIPTOR_MULTIPLE
60 #define FM10K_MULT_TX_DESC FM10K_REQ_TX_DESCRIPTOR_MULTIPLE
62 /* maximum size of descriptor rings */
63 #define FM10K_MAX_RX_RING_SZ (512 * 1024)
64 #define FM10K_MAX_TX_RING_SZ (512 * 1024)
66 /* minimum and maximum number of descriptors in a ring */
67 #define FM10K_MIN_RX_DESC 32
68 #define FM10K_MIN_TX_DESC 32
69 #define FM10K_MAX_RX_DESC (FM10K_MAX_RX_RING_SZ / sizeof(union fm10k_rx_desc))
70 #define FM10K_MAX_TX_DESC (FM10K_MAX_TX_RING_SZ / sizeof(struct fm10k_tx_desc))
73 * byte aligment for HW RX data buffer
74 * Datasheet requires RX buffer addresses shall either be 512-byte aligned or
75 * be 8-byte aligned but without crossing host memory pages (4KB alignment
76 * boundaries). Satisfy first option.
78 #define FM10K_RX_DATABUF_ALIGN 512
81 * threshold default, min, max, and divisor constraints
82 * the configured values must satisfy the following:
86 #define FM10K_RX_FREE_THRESH_DEFAULT(rxq) 32
87 #define FM10K_RX_FREE_THRESH_MIN(rxq) 1
88 #define FM10K_RX_FREE_THRESH_MAX(rxq) ((rxq)->nb_desc - 1)
89 #define FM10K_RX_FREE_THRESH_DIV(rxq) ((rxq)->nb_desc)
91 #define FM10K_TX_FREE_THRESH_DEFAULT(txq) 32
92 #define FM10K_TX_FREE_THRESH_MIN(txq) 1
93 #define FM10K_TX_FREE_THRESH_MAX(txq) ((txq)->nb_desc - 3)
94 #define FM10K_TX_FREE_THRESH_DIV(txq) 0
96 #define FM10K_DEFAULT_RX_PTHRESH 8
97 #define FM10K_DEFAULT_RX_HTHRESH 8
98 #define FM10K_DEFAULT_RX_WTHRESH 0
100 #define FM10K_DEFAULT_TX_PTHRESH 32
101 #define FM10K_DEFAULT_TX_HTHRESH 0
102 #define FM10K_DEFAULT_TX_WTHRESH 0
104 #define FM10K_TX_RS_THRESH_DEFAULT(txq) 32
105 #define FM10K_TX_RS_THRESH_MIN(txq) 1
106 #define FM10K_TX_RS_THRESH_MAX(txq) \
107 RTE_MIN(((txq)->nb_desc - 2), (txq)->free_thresh)
108 #define FM10K_TX_RS_THRESH_DIV(txq) ((txq)->nb_desc)
110 #define FM10K_VLAN_TAG_SIZE 4
112 /* Maximum number of MAC addresses per PF/VF */
113 #define FM10K_MAX_MACADDR_NUM 64
115 #define FM10K_UINT32_BIT_SIZE (CHAR_BIT * sizeof(uint32_t))
116 #define FM10K_VFTA_SIZE (4096 / FM10K_UINT32_BIT_SIZE)
118 /* vlan_id is a 12 bit number.
119 * The VFTA array is actually a 4096 bit array, 128 of 32bit elements.
120 * 2^5 = 32. The val of lower 5 bits specifies the bit in the 32bit element.
121 * The higher 7 bit val specifies VFTA array index.
123 #define FM10K_VFTA_BIT(vlan_id) (1 << ((vlan_id) & 0x1F))
124 #define FM10K_VFTA_IDX(vlan_id) ((vlan_id) >> 5)
126 struct fm10k_macvlan_filter_info {
127 uint16_t vlan_num; /* Total VLAN number */
128 uint16_t mac_num; /* Total mac number */
129 uint32_t vfta[FM10K_VFTA_SIZE]; /* VLAN bitmap */
132 struct fm10k_dev_info {
133 volatile uint32_t enable;
134 volatile uint32_t glort;
135 /* Protect the mailbox to avoid race condition */
136 rte_spinlock_t mbx_lock;
137 struct fm10k_macvlan_filter_info macvlan;
141 * Structure to store private data for each driver instance.
143 struct fm10k_adapter {
145 struct fm10k_hw_stats stats;
146 struct fm10k_dev_info info;
149 #define FM10K_DEV_PRIVATE_TO_HW(adapter) \
150 (&((struct fm10k_adapter *)adapter)->hw)
152 #define FM10K_DEV_PRIVATE_TO_STATS(adapter) \
153 (&((struct fm10k_adapter *)adapter)->stats)
155 #define FM10K_DEV_PRIVATE_TO_INFO(adapter) \
156 (&((struct fm10k_adapter *)adapter)->info)
158 #define FM10K_DEV_PRIVATE_TO_MBXLOCK(adapter) \
159 (&(((struct fm10k_adapter *)adapter)->info.mbx_lock))
161 #define FM10K_DEV_PRIVATE_TO_MACVLAN(adapter) \
162 (&(((struct fm10k_adapter *)adapter)->info.macvlan))
164 struct fm10k_rx_queue {
165 struct rte_mempool *mp;
166 struct rte_mbuf **sw_ring;
167 volatile union fm10k_rx_desc *hw_ring;
168 struct rte_mbuf *pkt_first_seg; /**< First segment of current packet. */
169 struct rte_mbuf *pkt_last_seg; /**< Last segment of current packet. */
170 uint64_t hw_ring_phys_addr;
173 uint16_t next_trigger;
174 uint16_t alloc_thresh;
175 volatile uint32_t *tail_ptr;
180 uint8_t rx_deferred_start; /**< don't start this queue in dev start. */
184 * a FIFO is used to track which descriptors have their RS bit set for Tx
185 * queues which are configured to allow multiple descriptors per packet
194 struct fm10k_tx_queue {
195 struct rte_mbuf **sw_ring;
196 struct fm10k_tx_desc *hw_ring;
197 uint64_t hw_ring_phys_addr;
198 struct fifo rs_tracker;
203 uint16_t free_thresh;
205 volatile uint32_t *tail_ptr;
208 uint8_t tx_deferred_start; /** < don't start this queue in dev start. */
212 #define MBUF_DMA_ADDR(mb) \
213 ((uint64_t) ((mb)->buf_physaddr + (mb)->data_off))
215 /* enforce 512B alignment on default Rx DMA addresses */
216 #define MBUF_DMA_ADDR_DEFAULT(mb) \
217 ((uint64_t) RTE_ALIGN(((mb)->buf_physaddr + RTE_PKTMBUF_HEADROOM),\
218 FM10K_RX_DATABUF_ALIGN))
220 static inline void fifo_reset(struct fifo *fifo, uint32_t len)
222 fifo->head = fifo->tail = fifo->list;
223 fifo->endp = fifo->list + len;
226 static inline void fifo_insert(struct fifo *fifo, uint16_t val)
229 if (++fifo->head == fifo->endp)
230 fifo->head = fifo->list;
233 /* do not worry about list being empty since we only check it once we know
234 * we have used enough descriptors to set the RS bit at least once */
235 static inline uint16_t fifo_peek(struct fifo *fifo)
240 static inline uint16_t fifo_remove(struct fifo *fifo)
244 if (++fifo->tail == fifo->endp)
245 fifo->tail = fifo->list;
250 fm10k_pktmbuf_reset(struct rte_mbuf *mb, uint8_t in_port)
252 rte_mbuf_refcnt_set(mb, 1);
256 /* enforce 512B alignment on default Rx virtual addresses */
257 mb->data_off = (uint16_t)(RTE_PTR_ALIGN((char *)mb->buf_addr +
258 RTE_PKTMBUF_HEADROOM, FM10K_RX_DATABUF_ALIGN)
259 - (char *)mb->buf_addr);
264 * Verify Rx packet buffer alignment is valid.
266 * Hardware requires specific alignment for Rx packet buffers. At
267 * least one of the following two conditions must be satisfied.
268 * 1. Address is 512B aligned
269 * 2. Address is 8B aligned and buffer does not cross 4K boundary.
271 * Return 1 if buffer alignment satisfies at least one condition,
272 * otherwise return 0.
274 * Note: Alignment is checked by the driver when the Rx queue is reset. It
275 * is assumed that if an entire descriptor ring can be filled with
276 * buffers containing valid alignment, then all buffers in that mempool
277 * have valid address alignment. It is the responsibility of the user
278 * to ensure all buffers have valid alignment, as it is the user who
279 * creates the mempool.
280 * Note: It is assumed the buffer needs only to store a maximum size Ethernet
284 fm10k_addr_alignment_valid(struct rte_mbuf *mb)
286 uint64_t addr = MBUF_DMA_ADDR_DEFAULT(mb);
287 uint64_t boundary1, boundary2;
290 if (RTE_ALIGN(addr, FM10K_RX_DATABUF_ALIGN) == addr)
293 /* 8B aligned, and max Ethernet frame would not cross a 4KB boundary? */
294 if (RTE_ALIGN(addr, 8) == addr) {
295 boundary1 = RTE_ALIGN_FLOOR(addr, 4096);
296 boundary2 = RTE_ALIGN_FLOOR(addr + ETHER_MAX_VLAN_FRAME_LEN,
298 if (boundary1 == boundary2)
302 PMD_INIT_LOG(ERR, "Error: Invalid buffer alignment!");
307 /* Rx and Tx prototypes */
308 uint16_t fm10k_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
311 uint16_t fm10k_recv_scattered_pkts(void *rx_queue,
312 struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
314 uint16_t fm10k_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,