1 /******************************************************************************
2 SPDX-License-Identifier: BSD-3-Clause
3
4 Copyright (c) 2001-2020, Intel Corporation
5 All rights reserved.
6
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are met:
9
10 1. Redistributions of source code must retain the above copyright notice,
11 this list of conditions and the following disclaimer.
12
13 2. Redistributions in binary form must reproduce the above copyright
14 notice, this list of conditions and the following disclaimer in the
15 documentation and/or other materials provided with the distribution.
16
17 3. Neither the name of the Intel Corporation nor the names of its
18 contributors may be used to endorse or promote products derived from
19 this software without specific prior written permission.
20
21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 POSSIBILITY OF SUCH DAMAGE.
32
33 ******************************************************************************/
34
35
36 #ifndef _FREEBSD_OS_H_
37 #define _FREEBSD_OS_H_
38
39 #include <sys/types.h>
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/proc.h>
43 #include <sys/lock.h>
44 #include <sys/mutex.h>
45 #include <sys/mbuf.h>
46 #include <sys/protosw.h>
47 #include <sys/socket.h>
48 #include <sys/malloc.h>
49 #include <sys/kernel.h>
50 #include <sys/bus.h>
51
52 #include <net/ethernet.h>
53 #include <net/if.h>
54 #include <net/if_var.h>
55 #include <net/iflib.h>
56
57
58
59 #include <machine/bus.h>
60 #include <sys/rman.h>
61 #include <machine/resource.h>
62 #include <vm/vm.h>
63 #include <vm/pmap.h>
64 #include <machine/clock.h>
65 #include <dev/pci/pcivar.h>
66 #include <dev/pci/pcireg.h>
67
68
69 #define ASSERT(x) if(!(x)) panic("EM: x")
70 #define us_scale(x) max(1, (x/(1000000/hz)))
71 static inline int
ms_scale(int x)72 ms_scale(int x) {
73 if (hz == 1000) {
74 return (x);
75 } else if (hz > 1000) {
76 return (x*(hz/1000));
77 } else {
78 return (max(1, x/(1000/hz)));
79 }
80 }
81
82 extern int e1000_use_pause_delay;
83
84 static inline void
safe_pause_us(int x)85 safe_pause_us(int x) {
86 if (!e1000_use_pause_delay) {
87 DELAY(x);
88 } else {
89 pause("e1000_delay", max(1, x/(1000000/hz)));
90 }
91 }
92
93 static inline void
safe_pause_ms(int x)94 safe_pause_ms(int x) {
95 if (!e1000_use_pause_delay) {
96 DELAY(x*1000);
97 } else {
98 pause("e1000_delay", ms_scale(x));
99 }
100 }
101
102 #define usec_delay(x) safe_pause_us(x)
103 #define usec_delay_irq(x) usec_delay(x)
104 #define msec_delay(x) safe_pause_ms(x)
105 #define msec_delay_irq(x) msec_delay(x)
106
107 /* Enable/disable debugging statements in shared code */
108 #define DBG 0
109
110 #define DEBUGOUT(...) \
111 do { if (DBG) printf(__VA_ARGS__); } while (0)
112 #define DEBUGOUT1(...) DEBUGOUT(__VA_ARGS__)
113 #define DEBUGOUT2(...) DEBUGOUT(__VA_ARGS__)
114 #define DEBUGOUT3(...) DEBUGOUT(__VA_ARGS__)
115 #define DEBUGOUT7(...) DEBUGOUT(__VA_ARGS__)
116 #define DEBUGFUNC(F) DEBUGOUT(F "\n")
117
118 #define STATIC static
119 #define CMD_MEM_WRT_INVALIDATE 0x0010 /* BIT_4 */
120 #define PCI_COMMAND_REGISTER PCIR_COMMAND
121
122 typedef uint64_t u64;
123 typedef uint32_t u32;
124 typedef uint16_t u16;
125 typedef uint8_t u8;
126 typedef int64_t s64;
127 typedef int32_t s32;
128 typedef int16_t s16;
129 typedef int8_t s8;
130
131 #define __le16 u16
132 #define __le32 u32
133 #define __le64 u64
134
135 #ifdef INVARIANTS
136 #define ASSERT_CTX_LOCK_HELD(hw) (sx_assert(iflib_ctx_lock_get(((struct e1000_osdep *)hw->back)->ctx), SX_XLOCKED))
137 #else
138 #define ASSERT_CTX_LOCK_HELD(hw)
139 #endif
140
141 #if defined(__i386__) || defined(__amd64__)
142 static __inline
prefetch(void * x)143 void prefetch(void *x)
144 {
145 __asm volatile("prefetcht0 %0" :: "m" (*(unsigned long *)x));
146 }
147 #else
148 #define prefetch(x)
149 #endif
150
151 struct e1000_osdep
152 {
153 bus_space_tag_t mem_bus_space_tag;
154 bus_space_handle_t mem_bus_space_handle;
155 #ifdef INVARIANTS
156 bus_size_t mem_bus_space_size;
157 #endif
158 bus_space_tag_t io_bus_space_tag;
159 bus_space_handle_t io_bus_space_handle;
160 bus_space_tag_t flash_bus_space_tag;
161 bus_space_handle_t flash_bus_space_handle;
162 device_t dev;
163 if_ctx_t ctx;
164 };
165
166 #define E1000_REGISTER(hw, reg) (((hw)->mac.type >= e1000_82543) \
167 ? reg : e1000_translate_register_82542(reg))
168
169 #define E1000_WRITE_FLUSH(a) E1000_READ_REG(a, E1000_STATUS)
170
171 /* Read from an absolute offset in the adapter's memory space */
172 #define E1000_READ_OFFSET(hw, offset) \
173 bus_space_read_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
174 ((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, offset)
175
176 /* Write to an absolute offset in the adapter's memory space */
177 #define E1000_WRITE_OFFSET(hw, offset, value) \
178 bus_space_write_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
179 ((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, offset, value)
180
181 static __inline uint32_t
e1000_rd32(struct e1000_osdep * osdep,uint32_t reg)182 e1000_rd32(struct e1000_osdep *osdep, uint32_t reg)
183 {
184
185 KASSERT(reg < osdep->mem_bus_space_size,
186 ("e1000: register offset %#jx too large (max is %#jx)",
187 (uintmax_t)reg, (uintmax_t)osdep->mem_bus_space_size));
188
189 return (bus_space_read_4(osdep->mem_bus_space_tag,
190 osdep->mem_bus_space_handle, reg));
191 }
192
193
194 static __inline void
e1000_wr32(struct e1000_osdep * osdep,uint32_t reg,uint32_t value)195 e1000_wr32(struct e1000_osdep *osdep, uint32_t reg, uint32_t value)
196 {
197
198 KASSERT(reg < osdep->mem_bus_space_size,
199 ("e1000: register offset %#jx too large (max is %#jx)",
200 (uintmax_t)reg, (uintmax_t)osdep->mem_bus_space_size));
201
202 bus_space_write_4(osdep->mem_bus_space_tag,
203 osdep->mem_bus_space_handle, reg, value);
204 }
205
206 /* Register READ/WRITE macros */
207
208 #define E1000_READ_REG(hw, reg) \
209 e1000_rd32((hw)->back, E1000_REGISTER(hw, reg))
210
211 #define E1000_WRITE_REG(hw, reg, value) \
212 e1000_wr32((hw)->back, E1000_REGISTER(hw, reg), value)
213
214 #define E1000_READ_REG_ARRAY(hw, reg, index) \
215 e1000_rd32((hw)->back, E1000_REGISTER(hw, reg) + ((index) << 2))
216
217 #define E1000_WRITE_REG_ARRAY(hw, reg, index, value) \
218 e1000_wr32((hw)->back, E1000_REGISTER(hw, reg) + ((index) << 2), value)
219
220 #define E1000_READ_REG_ARRAY_DWORD E1000_READ_REG_ARRAY
221 #define E1000_WRITE_REG_ARRAY_DWORD E1000_WRITE_REG_ARRAY
222
223 #define E1000_READ_REG_ARRAY_BYTE(hw, reg, index) \
224 bus_space_read_1(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
225 ((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \
226 E1000_REGISTER(hw, reg) + index)
227
228 #define E1000_WRITE_REG_ARRAY_BYTE(hw, reg, index, value) \
229 bus_space_write_1(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
230 ((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \
231 E1000_REGISTER(hw, reg) + index, value)
232
233 #define E1000_WRITE_REG_ARRAY_WORD(hw, reg, index, value) \
234 bus_space_write_2(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
235 ((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \
236 E1000_REGISTER(hw, reg) + (index << 1), value)
237
238 #define E1000_WRITE_REG_IO(hw, reg, value) do {\
239 bus_space_write_4(((struct e1000_osdep *)(hw)->back)->io_bus_space_tag, \
240 ((struct e1000_osdep *)(hw)->back)->io_bus_space_handle, \
241 (hw)->io_base, reg); \
242 bus_space_write_4(((struct e1000_osdep *)(hw)->back)->io_bus_space_tag, \
243 ((struct e1000_osdep *)(hw)->back)->io_bus_space_handle, \
244 (hw)->io_base + 4, value); } while (0)
245
246 #define E1000_READ_FLASH_REG(hw, reg) \
247 bus_space_read_4(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \
248 ((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg)
249
250 #define E1000_READ_FLASH_REG16(hw, reg) \
251 bus_space_read_2(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \
252 ((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg)
253
254 #define E1000_WRITE_FLASH_REG(hw, reg, value) \
255 bus_space_write_4(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \
256 ((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg, value)
257
258 #define E1000_WRITE_FLASH_REG16(hw, reg, value) \
259 bus_space_write_2(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \
260 ((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg, value)
261
262
263 #if defined(INVARIANTS)
264 #include <sys/proc.h>
265
266 #define ASSERT_NO_LOCKS() \
267 do { \
268 int unknown_locks = curthread->td_locks - mtx_owned(&Giant); \
269 if (unknown_locks > 0) { \
270 WITNESS_WARN(WARN_GIANTOK|WARN_SLEEPOK|WARN_PANIC, NULL, "unexpected non-sleepable lock"); \
271 } \
272 MPASS(curthread->td_rw_rlocks == 0); \
273 MPASS(curthread->td_lk_slocks == 0); \
274 } while (0)
275 #else
276 #define ASSERT_NO_LOCKS()
277 #endif
278
279 #endif /* _FREEBSD_OS_H_ */
280
281