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>
125 static inline uint8_t nn_readb(volatile const void *addr)
127 return *((volatile const uint8_t *)(addr));
130 static inline void nn_writeb(uint8_t val, volatile void *addr)
132 *((volatile uint8_t *)(addr)) = val;
135 static inline uint32_t nn_readl(volatile const void *addr)
137 return *((volatile const uint32_t *)(addr));
140 static inline void nn_writel(uint32_t val, volatile void *addr)
142 *((volatile uint32_t *)(addr)) = val;
145 static inline uint64_t nn_readq(volatile void *addr)
147 const volatile uint32_t *p = addr;
150 high = nn_readl((volatile const void *)(p + 1));
151 low = nn_readl((volatile const void *)p);
153 return low + ((uint64_t)high << 32);
156 static inline void nn_writeq(uint64_t val, volatile void *addr)
158 nn_writel(val >> 32, (volatile char *)addr + 4);
159 nn_writel(val, addr);
162 /* TX descriptor format */
163 #define PCIE_DESC_TX_EOP (1 << 7)
164 #define PCIE_DESC_TX_OFFSET_MASK (0x7f)
166 /* Flags in the host TX descriptor */
167 #define PCIE_DESC_TX_CSUM (1 << 7)
168 #define PCIE_DESC_TX_IP4_CSUM (1 << 6)
169 #define PCIE_DESC_TX_TCP_CSUM (1 << 5)
170 #define PCIE_DESC_TX_UDP_CSUM (1 << 4)
171 #define PCIE_DESC_TX_VLAN (1 << 3)
172 #define PCIE_DESC_TX_LSO (1 << 2)
173 #define PCIE_DESC_TX_ENCAP_NONE (0)
174 #define PCIE_DESC_TX_ENCAP_VXLAN (1 << 1)
175 #define PCIE_DESC_TX_ENCAP_GRE (1 << 0)
177 struct nfp_net_tx_desc {
180 uint8_t dma_addr_hi; /* High bits of host buf address */
181 __le16 dma_len; /* Length to DMA for this desc */
182 uint8_t offset_eop; /* Offset in buf where pkt starts +
183 * highest bit is eop flag.
185 __le32 dma_addr_lo; /* Low 32bit of host buf addr */
187 __le16 lso; /* MSS to be used for LSO */
188 uint8_t l4_offset; /* LSO, where the L4 data starts */
189 uint8_t flags; /* TX Flags, see @PCIE_DESC_TX_* */
191 __le16 vlan; /* VLAN tag to add if indicated */
192 __le16 data_len; /* Length of frame + meta data */
193 } __attribute__((__packed__));
199 struct nfp_net_hw *hw; /* Backpointer to nfp_net structure */
202 * Queue information: @qidx is the queue index from Linux's
203 * perspective. @tx_qcidx is the index of the Queue
204 * Controller Peripheral queue relative to the TX queue BAR.
205 * @cnt is the size of the queue in number of
206 * descriptors. @qcp_q is a pointer to the base of the queue
207 * structure on the NFP
212 * Read and Write pointers. @wr_p and @rd_p are host side pointer,
213 * they are free running and have little relation to the QCP pointers *
214 * @qcp_rd_p is a local copy queue controller peripheral read pointer
223 uint32_t tx_free_thresh;
227 * For each descriptor keep a reference to the mbuff and
228 * DMA address used until completion is signalled.
231 struct rte_mbuf *mbuf;
235 * Information about the host side queue location. @txds is
236 * the virtual address for the queue, @dma is the DMA address
237 * of the queue and @size is the size in bytes for the queue
240 struct nfp_net_tx_desc *txds;
243 * At this point 56 bytes have been used for all the fields in the
244 * TX critical path. We have room for 8 bytes and still all placed
245 * in a cache line. We are not using the threshold values below nor
246 * the txq_flags but if we need to, we can add the most used in the
249 uint32_t tx_rs_thresh; /* not used by now. Future? */
250 uint32_t tx_pthresh; /* not used by now. Future? */
251 uint32_t tx_hthresh; /* not used by now. Future? */
252 uint32_t tx_wthresh; /* not used by now. Future? */
253 uint32_t txq_flags; /* not used by now. Future? */
258 } __attribute__ ((__aligned__(64)));
260 /* RX and freelist descriptor format */
261 #define PCIE_DESC_RX_DD (1 << 7)
262 #define PCIE_DESC_RX_META_LEN_MASK (0x7f)
264 /* Flags in the RX descriptor */
265 #define PCIE_DESC_RX_RSS (1 << 15)
266 #define PCIE_DESC_RX_I_IP4_CSUM (1 << 14)
267 #define PCIE_DESC_RX_I_IP4_CSUM_OK (1 << 13)
268 #define PCIE_DESC_RX_I_TCP_CSUM (1 << 12)
269 #define PCIE_DESC_RX_I_TCP_CSUM_OK (1 << 11)
270 #define PCIE_DESC_RX_I_UDP_CSUM (1 << 10)
271 #define PCIE_DESC_RX_I_UDP_CSUM_OK (1 << 9)
272 #define PCIE_DESC_RX_INGRESS_PORT (1 << 8)
273 #define PCIE_DESC_RX_EOP (1 << 7)
274 #define PCIE_DESC_RX_IP4_CSUM (1 << 6)
275 #define PCIE_DESC_RX_IP4_CSUM_OK (1 << 5)
276 #define PCIE_DESC_RX_TCP_CSUM (1 << 4)
277 #define PCIE_DESC_RX_TCP_CSUM_OK (1 << 3)
278 #define PCIE_DESC_RX_UDP_CSUM (1 << 2)
279 #define PCIE_DESC_RX_UDP_CSUM_OK (1 << 1)
280 #define PCIE_DESC_RX_VLAN (1 << 0)
282 struct nfp_net_rx_desc {
284 /* Freelist descriptor */
291 } __attribute__((__packed__)) fld;
301 } __attribute__((__packed__)) rxd;
307 struct nfp_net_rx_buff {
308 struct rte_mbuf *mbuf;
312 struct nfp_net_hw *hw; /* Backpointer to nfp_net structure */
315 * @qcp_fl and @qcp_rx are pointers to the base addresses of the
316 * freelist and RX queue controller peripheral queue structures on the
323 * Read and Write pointers. @wr_p and @rd_p are host side
324 * pointer, they are free running and have little relation to
325 * the QCP pointers. @wr_p is where the driver adds new
326 * freelist descriptors and @rd_p is where the driver start
327 * reading descriptors for newly arrive packets from.
333 * For each buffer placed on the freelist, record the
336 struct nfp_net_rx_buff *rxbufs;
339 * Information about the host side queue location. @rxds is
340 * the virtual address for the queue
342 struct nfp_net_rx_desc *rxds;
345 * The mempool is created by the user specifying a mbuf size.
346 * We save here the reference of the mempool needed in the RX
347 * path and the mbuf size for checking received packets can be
348 * safely copied to the mbuf using the NFP_NET_RX_OFFSET
350 struct rte_mempool *mem_pool;
354 * Next two fields are used for giving more free descriptors
357 uint16_t rx_free_thresh;
360 /* the size of the queue in number of descriptors */
364 * Fields above this point fit in a single cache line and are all used
365 * in the RX critical path. Fields below this point are just used
366 * during queue configuration or not used at all (yet)
369 /* referencing dev->data->port_id */
372 uint8_t crc_len; /* Not used by now */
373 uint8_t drop_en; /* Not used by now */
375 /* DMA address of the queue */
379 * Queue information: @qidx is the queue index from Linux's
380 * perspective. @fl_qcidx is the index of the Queue
381 * Controller peripheral queue relative to the RX queue BAR
382 * used for the freelist and @rx_qcidx is the Queue Controller
383 * Peripheral index for the RX queue.
388 } __attribute__ ((__aligned__(64)));
391 /* Info from the firmware */
398 /* Current values for control */
409 rte_spinlock_t reconfig_lock;
411 uint32_t max_tx_queues;
412 uint32_t max_rx_queues;
416 uint16_t subsystem_device_id;
417 uint16_t subsystem_vendor_id;
418 #if defined(DSTQ_SELECTION)
420 uint16_t device_function;
424 uint8_t mac_addr[ETHER_ADDR_LEN];
426 /* Records starting point for counters */
427 struct rte_eth_stats eth_stats_base;
429 #ifdef NFP_NET_LIBNFP
431 struct nfp_cpp_area *ctrl_area;
432 struct nfp_cpp_area *tx_area;
433 struct nfp_cpp_area *rx_area;
434 struct nfp_cpp_area *msix_area;
438 struct nfp_net_adapter {
439 struct nfp_net_hw hw;
442 #define NFP_NET_DEV_PRIVATE_TO_HW(adapter)\
443 (&((struct nfp_net_adapter *)adapter)->hw)
445 #endif /* _NFP_NET_PMD_H_ */
448 * c-file-style: "Linux"
449 * indent-tabs-mode: t