1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2017 CESNET
5 #ifndef _SZEDATA2_IOBUF_H_
6 #define _SZEDATA2_IOBUF_H_
11 #include <rte_byteorder.h>
15 /* IBUF offsets from the beginning of the PCI resource address space. */
16 extern const uint32_t szedata2_ibuf_base_table[];
17 extern const uint32_t szedata2_ibuf_count;
19 /* OBUF offsets from the beginning of the PCI resource address space. */
20 extern const uint32_t szedata2_obuf_base_table[];
21 extern const uint32_t szedata2_obuf_count;
23 enum szedata2_link_speed {
24 SZEDATA2_LINK_SPEED_DEFAULT = 0,
25 SZEDATA2_LINK_SPEED_10G,
26 SZEDATA2_LINK_SPEED_40G,
27 SZEDATA2_LINK_SPEED_100G,
30 enum szedata2_mac_check_mode {
31 SZEDATA2_MAC_CHMODE_PROMISC = 0x0,
32 SZEDATA2_MAC_CHMODE_ONLY_VALID = 0x1,
33 SZEDATA2_MAC_CHMODE_ALL_BROADCAST = 0x2,
34 SZEDATA2_MAC_CHMODE_ALL_MULTICAST = 0x3,
38 * Macro takes pointer to pci resource structure (rsc)
39 * and returns pointer to mapped resource memory at
40 * specified offset (offset) typecast to the type (type).
42 #define SZEDATA2_PCI_RESOURCE_PTR(rsc, offset, type) \
43 ((type)(((uint8_t *)(rsc)->addr) + (offset)))
46 * Maximum possible number of MAC addresses (limited by IBUF status
47 * register value MAC_COUNT which has 5 bits).
49 #define SZEDATA2_IBUF_MAX_MAC_COUNT 32
52 * Structure describes IBUF address space.
54 struct szedata2_ibuf {
55 /** Total Received Frames Counter low part */
56 uint32_t trfcl; /**< 0x00 */
57 /** Correct Frames Counter low part */
58 uint32_t cfcl; /**< 0x04 */
59 /** Discarded Frames Counter low part */
60 uint32_t dfcl; /**< 0x08 */
61 /** Counter of frames discarded due to buffer overflow low part */
62 uint32_t bodfcl; /**< 0x0C */
63 /** Total Received Frames Counter high part */
64 uint32_t trfch; /**< 0x10 */
65 /** Correct Frames Counter high part */
66 uint32_t cfch; /**< 0x14 */
67 /** Discarded Frames Counter high part */
68 uint32_t dfch; /**< 0x18 */
69 /** Counter of frames discarded due to buffer overflow high part */
70 uint32_t bodfch; /**< 0x1C */
71 /** IBUF enable register */
72 uint32_t ibuf_en; /**< 0x20 */
73 /** Error mask register */
74 uint32_t err_mask; /**< 0x24 */
75 /** IBUF status register */
76 uint32_t ibuf_st; /**< 0x28 */
77 /** IBUF command register */
78 uint32_t ibuf_cmd; /**< 0x2C */
79 /** Minimum frame length allowed */
80 uint32_t mfla; /**< 0x30 */
82 uint32_t mtu; /**< 0x34 */
83 /** MAC address check mode */
84 uint32_t mac_chmode; /**< 0x38 */
85 /** Octets Received OK Counter low part */
86 uint32_t orocl; /**< 0x3C */
87 /** Octets Received OK Counter high part */
88 uint32_t oroch; /**< 0x40 */
90 uint8_t reserved[60]; /**< 0x4C */
91 /** IBUF memory for MAC addresses */
92 uint32_t mac_mem[2 * SZEDATA2_IBUF_MAX_MAC_COUNT]; /**< 0x80 */
96 * Structure describes OBUF address space.
98 struct szedata2_obuf {
99 /** Total Sent Frames Counter low part */
100 uint32_t tsfcl; /**< 0x00 */
101 /** Octets Sent Counter low part */
102 uint32_t oscl; /**< 0x04 */
103 /** Total Discarded Frames Counter low part */
104 uint32_t tdfcl; /**< 0x08 */
106 uint32_t reserved1; /**< 0x0C */
107 /** Total Sent Frames Counter high part */
108 uint32_t tsfch; /**< 0x10 */
109 /** Octets Sent Counter high part */
110 uint32_t osch; /**< 0x14 */
111 /** Total Discarded Frames Counter high part */
112 uint32_t tdfch; /**< 0x18 */
114 uint32_t reserved2; /**< 0x1C */
115 /** OBUF enable register */
116 uint32_t obuf_en; /**< 0x20 */
118 uint64_t reserved3; /**< 0x24 */
119 /** OBUF control register */
120 uint32_t ctrl; /**< 0x2C */
121 /** OBUF status register */
122 uint32_t obuf_st; /**< 0x30 */
126 * Wrapper for reading 4 bytes from device memory in correct endianness.
129 * Address for reading.
133 static inline uint32_t
134 szedata2_read32(const volatile void *addr)
136 return rte_le_to_cpu_32(rte_read32(addr));
140 * Wrapper for writing 4 bytes to device memory in correct endianness.
145 * Address for writing.
148 szedata2_write32(uint32_t value, volatile void *addr)
150 rte_write32(rte_cpu_to_le_32(value), addr);
154 * Get pointer to IBUF structure according to specified index.
157 * Pointer to base address of memory resource.
161 * Pointer to IBUF structure.
163 static inline struct szedata2_ibuf *
164 ibuf_ptr_by_index(struct rte_mem_resource *rsc, uint32_t index)
166 if (index >= szedata2_ibuf_count)
167 index = szedata2_ibuf_count - 1;
168 return SZEDATA2_PCI_RESOURCE_PTR(rsc, szedata2_ibuf_base_table[index],
169 struct szedata2_ibuf *);
173 * Get pointer to OBUF structure according to specified idnex.
176 * Pointer to base address of memory resource.
180 * Pointer to OBUF structure.
182 static inline struct szedata2_obuf *
183 obuf_ptr_by_index(struct rte_mem_resource *rsc, uint32_t index)
185 if (index >= szedata2_obuf_count)
186 index = szedata2_obuf_count - 1;
187 return SZEDATA2_PCI_RESOURCE_PTR(rsc, szedata2_obuf_base_table[index],
188 struct szedata2_obuf *);
192 * Checks if IBUF is enabled.
195 * Pointer to IBUF structure.
197 * true if IBUF is enabled.
198 * false if IBUF is disabled.
201 ibuf_is_enabled(const volatile struct szedata2_ibuf *ibuf)
203 return ((szedata2_read32(&ibuf->ibuf_en) & 0x1) != 0) ? true : false;
210 * Pointer to IBUF structure.
213 ibuf_enable(volatile struct szedata2_ibuf *ibuf)
215 szedata2_write32(szedata2_read32(&ibuf->ibuf_en) | 0x1, &ibuf->ibuf_en);
222 * Pointer to IBUF structure.
225 ibuf_disable(volatile struct szedata2_ibuf *ibuf)
227 szedata2_write32(szedata2_read32(&ibuf->ibuf_en) & ~0x1,
232 * Checks if link is up.
235 * Pointer to IBUF structure.
237 * true if ibuf link is up.
238 * false if ibuf link is down.
241 ibuf_is_link_up(const volatile struct szedata2_ibuf *ibuf)
243 return ((szedata2_read32(&ibuf->ibuf_st) & 0x80) != 0) ? true : false;
247 * Get current MAC address check mode from IBUF.
250 * Pointer to IBUF structure.
252 * MAC address check mode constant.
254 static inline enum szedata2_mac_check_mode
255 ibuf_mac_mode_read(const volatile struct szedata2_ibuf *ibuf)
257 switch (szedata2_read32(&ibuf->mac_chmode) & 0x3) {
259 return SZEDATA2_MAC_CHMODE_PROMISC;
261 return SZEDATA2_MAC_CHMODE_ONLY_VALID;
263 return SZEDATA2_MAC_CHMODE_ALL_BROADCAST;
265 return SZEDATA2_MAC_CHMODE_ALL_MULTICAST;
267 return SZEDATA2_MAC_CHMODE_PROMISC;
272 * Writes mode in MAC address check mode register in IBUF.
275 * Pointer to IBUF structure.
277 * MAC address check mode to set.
280 ibuf_mac_mode_write(volatile struct szedata2_ibuf *ibuf,
281 enum szedata2_mac_check_mode mode)
283 szedata2_write32((szedata2_read32(&ibuf->mac_chmode) & ~0x3) | mode,
288 * Checks if obuf is enabled.
291 * Pointer to OBUF structure.
293 * true if OBUF is enabled.
294 * false if OBUF is disabled.
297 obuf_is_enabled(const volatile struct szedata2_obuf *obuf)
299 return ((szedata2_read32(&obuf->obuf_en) & 0x1) != 0) ? true : false;
306 * Pointer to OBUF structure.
309 obuf_enable(volatile struct szedata2_obuf *obuf)
311 szedata2_write32(szedata2_read32(&obuf->obuf_en) | 0x1, &obuf->obuf_en);
318 * Pointer to OBUF structure.
321 obuf_disable(volatile struct szedata2_obuf *obuf)
323 szedata2_write32(szedata2_read32(&obuf->obuf_en) & ~0x1,
327 #endif /* _SZEDATA2_IOBUF_H_ */