2 * Copyright (c) 2014, 2015 Netronome Systems, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution
15 * 3. Neither the name of the copyright holder nor the names of its
16 * contributors may be used to endorse or promote products derived from this
17 * software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
33 * vim:shiftwidth=8:noexpandtab
35 * @file dpdk/pmd/nfp_net_pmd.h
37 * Netronome NFP_NET PDM driver
40 #ifndef _NFP_NET_PMD_H_
41 #define _NFP_NET_PMD_H_
43 #define NFP_NET_PMD_VERSION "0.1"
44 #define PCI_VENDOR_ID_NETRONOME 0x19ee
45 #define PCI_DEVICE_ID_NFP6000_PF_NIC 0x6000
46 #define PCI_DEVICE_ID_NFP6000_VF_NIC 0x6003
48 /* Forward declaration */
49 struct nfp_net_adapter;
52 * The maximum number of descriptors is limited by design as
53 * DPDK uses uint16_t variables for these values
55 #define NFP_NET_MAX_TX_DESC (32 * 1024)
56 #define NFP_NET_MIN_TX_DESC 64
58 #define NFP_NET_MAX_RX_DESC (32 * 1024)
59 #define NFP_NET_MIN_RX_DESC 64
62 #define NFP_NET_CRTL_BAR 0
63 #define NFP_NET_TX_BAR 2
64 #define NFP_NET_RX_BAR 2
66 /* Macros for accessing the Queue Controller Peripheral 'CSRs' */
67 #define NFP_QCP_QUEUE_OFF(_x) ((_x) * 0x800)
68 #define NFP_QCP_QUEUE_ADD_RPTR 0x0000
69 #define NFP_QCP_QUEUE_ADD_WPTR 0x0004
70 #define NFP_QCP_QUEUE_STS_LO 0x0008
71 #define NFP_QCP_QUEUE_STS_LO_READPTR_mask (0x3ffff)
72 #define NFP_QCP_QUEUE_STS_HI 0x000c
73 #define NFP_QCP_QUEUE_STS_HI_WRITEPTR_mask (0x3ffff)
75 /* Interrupt definitions */
76 #define NFP_NET_IRQ_LSC_IDX 0
78 /* Default values for RX/TX configuration */
79 #define DEFAULT_RX_FREE_THRESH 32
80 #define DEFAULT_RX_PTHRESH 8
81 #define DEFAULT_RX_HTHRESH 8
82 #define DEFAULT_RX_WTHRESH 0
84 #define DEFAULT_TX_RS_THRESH 32
85 #define DEFAULT_TX_FREE_THRESH 32
86 #define DEFAULT_TX_PTHRESH 32
87 #define DEFAULT_TX_HTHRESH 0
88 #define DEFAULT_TX_WTHRESH 0
89 #define DEFAULT_TX_RSBIT_THRESH 32
91 /* Alignment for dma zones */
92 #define NFP_MEMZONE_ALIGN 128
95 * This is used by the reconfig protocol. It sets the maximum time waiting in
96 * milliseconds before a reconfig timeout happens.
98 #define NFP_NET_POLL_TIMEOUT 5000
100 #define NFP_QCP_QUEUE_ADDR_SZ (0x800)
102 #define NFP_NET_LINK_DOWN_CHECK_TIMEOUT 4000 /* ms */
103 #define NFP_NET_LINK_UP_CHECK_TIMEOUT 1000 /* ms */
105 /* Version number helper defines */
106 #define NFD_CFG_CLASS_VER_msk 0xff
107 #define NFD_CFG_CLASS_VER_shf 24
108 #define NFD_CFG_CLASS_VER(x) (((x) & 0xff) << 24)
109 #define NFD_CFG_CLASS_VER_of(x) (((x) >> 24) & 0xff)
110 #define NFD_CFG_CLASS_TYPE_msk 0xff
111 #define NFD_CFG_CLASS_TYPE_shf 16
112 #define NFD_CFG_CLASS_TYPE(x) (((x) & 0xff) << 16)
113 #define NFD_CFG_CLASS_TYPE_of(x) (((x) >> 16) & 0xff)
114 #define NFD_CFG_MAJOR_VERSION_msk 0xff
115 #define NFD_CFG_MAJOR_VERSION_shf 8
116 #define NFD_CFG_MAJOR_VERSION(x) (((x) & 0xff) << 8)
117 #define NFD_CFG_MAJOR_VERSION_of(x) (((x) >> 8) & 0xff)
118 #define NFD_CFG_MINOR_VERSION_msk 0xff
119 #define NFD_CFG_MINOR_VERSION_shf 0
120 #define NFD_CFG_MINOR_VERSION(x) (((x) & 0xff) << 0)
121 #define NFD_CFG_MINOR_VERSION_of(x) (((x) >> 0) & 0xff)
123 #include <linux/types.h>
126 static inline uint8_t nn_readb(volatile const void *addr)
128 return rte_read8(addr);
131 static inline void nn_writeb(uint8_t val, volatile void *addr)
133 rte_write8(val, addr);
136 static inline uint32_t nn_readl(volatile const void *addr)
138 return rte_read32(addr);
141 static inline void nn_writel(uint32_t val, volatile void *addr)
143 rte_write32(val, addr);
146 static inline uint64_t nn_readq(volatile void *addr)
148 const volatile uint32_t *p = addr;
151 high = nn_readl((volatile const void *)(p + 1));
152 low = nn_readl((volatile const void *)p);
154 return low + ((uint64_t)high << 32);
157 static inline void nn_writeq(uint64_t val, volatile void *addr)
159 nn_writel(val >> 32, (volatile char *)addr + 4);
160 nn_writel(val, addr);
163 /* TX descriptor format */
164 #define PCIE_DESC_TX_EOP (1 << 7)
165 #define PCIE_DESC_TX_OFFSET_MASK (0x7f)
167 /* Flags in the host TX descriptor */
168 #define PCIE_DESC_TX_CSUM (1 << 7)
169 #define PCIE_DESC_TX_IP4_CSUM (1 << 6)
170 #define PCIE_DESC_TX_TCP_CSUM (1 << 5)
171 #define PCIE_DESC_TX_UDP_CSUM (1 << 4)
172 #define PCIE_DESC_TX_VLAN (1 << 3)
173 #define PCIE_DESC_TX_LSO (1 << 2)
174 #define PCIE_DESC_TX_ENCAP_NONE (0)
175 #define PCIE_DESC_TX_ENCAP_VXLAN (1 << 1)
176 #define PCIE_DESC_TX_ENCAP_GRE (1 << 0)
178 struct nfp_net_tx_desc {
181 uint8_t dma_addr_hi; /* High bits of host buf address */
182 __le16 dma_len; /* Length to DMA for this desc */
183 uint8_t offset_eop; /* Offset in buf where pkt starts +
184 * highest bit is eop flag.
186 __le32 dma_addr_lo; /* Low 32bit of host buf addr */
188 __le16 lso; /* MSS to be used for LSO */
189 uint8_t l4_offset; /* LSO, where the L4 data starts */
190 uint8_t flags; /* TX Flags, see @PCIE_DESC_TX_* */
192 __le16 vlan; /* VLAN tag to add if indicated */
193 __le16 data_len; /* Length of frame + meta data */
194 } __attribute__((__packed__));
200 struct nfp_net_hw *hw; /* Backpointer to nfp_net structure */
203 * Queue information: @qidx is the queue index from Linux's
204 * perspective. @tx_qcidx is the index of the Queue
205 * Controller Peripheral queue relative to the TX queue BAR.
206 * @cnt is the size of the queue in number of
207 * descriptors. @qcp_q is a pointer to the base of the queue
208 * structure on the NFP
213 * Read and Write pointers. @wr_p and @rd_p are host side pointer,
214 * they are free running and have little relation to the QCP pointers *
215 * @qcp_rd_p is a local copy queue controller peripheral read pointer
223 uint32_t tx_free_thresh;
226 * For each descriptor keep a reference to the mbuff and
227 * DMA address used until completion is signalled.
230 struct rte_mbuf *mbuf;
234 * Information about the host side queue location. @txds is
235 * the virtual address for the queue, @dma is the DMA address
236 * of the queue and @size is the size in bytes for the queue
239 struct nfp_net_tx_desc *txds;
242 * At this point 48 bytes have been used for all the fields in the
243 * TX critical path. We have room for 8 bytes and still all placed
244 * in a cache line. We are not using the threshold values below nor
245 * the txq_flags but if we need to, we can add the most used in the
248 uint32_t tx_rs_thresh; /* not used by now. Future? */
249 uint32_t tx_pthresh; /* not used by now. Future? */
250 uint32_t tx_hthresh; /* not used by now. Future? */
251 uint32_t tx_wthresh; /* not used by now. Future? */
252 uint32_t txq_flags; /* not used by now. Future? */
257 } __attribute__ ((__aligned__(64)));
259 /* RX and freelist descriptor format */
260 #define PCIE_DESC_RX_DD (1 << 7)
261 #define PCIE_DESC_RX_META_LEN_MASK (0x7f)
263 /* Flags in the RX descriptor */
264 #define PCIE_DESC_RX_RSS (1 << 15)
265 #define PCIE_DESC_RX_I_IP4_CSUM (1 << 14)
266 #define PCIE_DESC_RX_I_IP4_CSUM_OK (1 << 13)
267 #define PCIE_DESC_RX_I_TCP_CSUM (1 << 12)
268 #define PCIE_DESC_RX_I_TCP_CSUM_OK (1 << 11)
269 #define PCIE_DESC_RX_I_UDP_CSUM (1 << 10)
270 #define PCIE_DESC_RX_I_UDP_CSUM_OK (1 << 9)
271 #define PCIE_DESC_RX_SPARE (1 << 8)
272 #define PCIE_DESC_RX_EOP (1 << 7)
273 #define PCIE_DESC_RX_IP4_CSUM (1 << 6)
274 #define PCIE_DESC_RX_IP4_CSUM_OK (1 << 5)
275 #define PCIE_DESC_RX_TCP_CSUM (1 << 4)
276 #define PCIE_DESC_RX_TCP_CSUM_OK (1 << 3)
277 #define PCIE_DESC_RX_UDP_CSUM (1 << 2)
278 #define PCIE_DESC_RX_UDP_CSUM_OK (1 << 1)
279 #define PCIE_DESC_RX_VLAN (1 << 0)
281 struct nfp_net_rx_desc {
283 /* Freelist descriptor */
290 } __attribute__((__packed__)) fld;
300 } __attribute__((__packed__)) rxd;
306 struct nfp_net_rx_buff {
307 struct rte_mbuf *mbuf;
311 struct nfp_net_hw *hw; /* Backpointer to nfp_net structure */
314 * @qcp_fl and @qcp_rx are pointers to the base addresses of the
315 * freelist and RX queue controller peripheral queue structures on the
322 * Read and Write pointers. @wr_p and @rd_p are host side
323 * pointer, they are free running and have little relation to
324 * the QCP pointers. @wr_p is where the driver adds new
325 * freelist descriptors and @rd_p is where the driver start
326 * reading descriptors for newly arrive packets from.
331 * For each buffer placed on the freelist, record the
334 struct nfp_net_rx_buff *rxbufs;
337 * Information about the host side queue location. @rxds is
338 * the virtual address for the queue
340 struct nfp_net_rx_desc *rxds;
343 * The mempool is created by the user specifying a mbuf size.
344 * We save here the reference of the mempool needed in the RX
345 * path and the mbuf size for checking received packets can be
346 * safely copied to the mbuf using the NFP_NET_RX_OFFSET
348 struct rte_mempool *mem_pool;
352 * Next two fields are used for giving more free descriptors
355 uint16_t rx_free_thresh;
358 /* the size of the queue in number of descriptors */
362 * Fields above this point fit in a single cache line and are all used
363 * in the RX critical path. Fields below this point are just used
364 * during queue configuration or not used at all (yet)
367 /* referencing dev->data->port_id */
370 uint8_t crc_len; /* Not used by now */
371 uint8_t drop_en; /* Not used by now */
373 /* DMA address of the queue */
377 * Queue information: @qidx is the queue index from Linux's
378 * perspective. @fl_qcidx is the index of the Queue
379 * Controller peripheral queue relative to the RX queue BAR
380 * used for the freelist and @rx_qcidx is the Queue Controller
381 * Peripheral index for the RX queue.
386 } __attribute__ ((__aligned__(64)));
389 /* Info from the firmware */
396 /* Current values for control */
407 rte_spinlock_t reconfig_lock;
409 uint32_t max_tx_queues;
410 uint32_t max_rx_queues;
414 uint16_t subsystem_device_id;
415 uint16_t subsystem_vendor_id;
416 #if defined(DSTQ_SELECTION)
418 uint16_t device_function;
422 uint8_t mac_addr[ETHER_ADDR_LEN];
424 /* Records starting point for counters */
425 struct rte_eth_stats eth_stats_base;
427 #ifdef NFP_NET_LIBNFP
429 struct nfp_cpp_area *ctrl_area;
430 struct nfp_cpp_area *tx_area;
431 struct nfp_cpp_area *rx_area;
432 struct nfp_cpp_area *msix_area;
436 struct nfp_net_adapter {
437 struct nfp_net_hw hw;
440 #define NFP_NET_DEV_PRIVATE_TO_HW(adapter)\
441 (&((struct nfp_net_adapter *)adapter)->hw)
443 #endif /* _NFP_NET_PMD_H_ */
446 * c-file-style: "Linux"
447 * indent-tabs-mode: t