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path: root/drivers/net/wireless/bcm43xx/bcm43xx_dma.h
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Diffstat (limited to 'drivers/net/wireless/bcm43xx/bcm43xx_dma.h')
-rw-r--r--drivers/net/wireless/bcm43xx/bcm43xx_dma.h386
1 files changed, 0 insertions, 386 deletions
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_dma.h b/drivers/net/wireless/bcm43xx/bcm43xx_dma.h
deleted file mode 100644
index d1105e569a41..000000000000
--- a/drivers/net/wireless/bcm43xx/bcm43xx_dma.h
+++ /dev/null
@@ -1,386 +0,0 @@
1#ifndef BCM43xx_DMA_H_
2#define BCM43xx_DMA_H_
3
4#include <linux/list.h>
5#include <linux/spinlock.h>
6#include <linux/workqueue.h>
7#include <linux/dma-mapping.h>
8#include <linux/linkage.h>
9#include <asm/atomic.h>
10
11
12/* DMA-Interrupt reasons. */
13#define BCM43xx_DMAIRQ_FATALMASK ((1 << 10) | (1 << 11) | (1 << 12) \
14 | (1 << 14) | (1 << 15))
15#define BCM43xx_DMAIRQ_NONFATALMASK (1 << 13)
16#define BCM43xx_DMAIRQ_RX_DONE (1 << 16)
17
18
19/*** 32-bit DMA Engine. ***/
20
21/* 32-bit DMA controller registers. */
22#define BCM43xx_DMA32_TXCTL 0x00
23#define BCM43xx_DMA32_TXENABLE 0x00000001
24#define BCM43xx_DMA32_TXSUSPEND 0x00000002
25#define BCM43xx_DMA32_TXLOOPBACK 0x00000004
26#define BCM43xx_DMA32_TXFLUSH 0x00000010
27#define BCM43xx_DMA32_TXADDREXT_MASK 0x00030000
28#define BCM43xx_DMA32_TXADDREXT_SHIFT 16
29#define BCM43xx_DMA32_TXRING 0x04
30#define BCM43xx_DMA32_TXINDEX 0x08
31#define BCM43xx_DMA32_TXSTATUS 0x0C
32#define BCM43xx_DMA32_TXDPTR 0x00000FFF
33#define BCM43xx_DMA32_TXSTATE 0x0000F000
34#define BCM43xx_DMA32_TXSTAT_DISABLED 0x00000000
35#define BCM43xx_DMA32_TXSTAT_ACTIVE 0x00001000
36#define BCM43xx_DMA32_TXSTAT_IDLEWAIT 0x00002000
37#define BCM43xx_DMA32_TXSTAT_STOPPED 0x00003000
38#define BCM43xx_DMA32_TXSTAT_SUSP 0x00004000
39#define BCM43xx_DMA32_TXERROR 0x000F0000
40#define BCM43xx_DMA32_TXERR_NOERR 0x00000000
41#define BCM43xx_DMA32_TXERR_PROT 0x00010000
42#define BCM43xx_DMA32_TXERR_UNDERRUN 0x00020000
43#define BCM43xx_DMA32_TXERR_BUFREAD 0x00030000
44#define BCM43xx_DMA32_TXERR_DESCREAD 0x00040000
45#define BCM43xx_DMA32_TXACTIVE 0xFFF00000
46#define BCM43xx_DMA32_RXCTL 0x10
47#define BCM43xx_DMA32_RXENABLE 0x00000001
48#define BCM43xx_DMA32_RXFROFF_MASK 0x000000FE
49#define BCM43xx_DMA32_RXFROFF_SHIFT 1
50#define BCM43xx_DMA32_RXDIRECTFIFO 0x00000100
51#define BCM43xx_DMA32_RXADDREXT_MASK 0x00030000
52#define BCM43xx_DMA32_RXADDREXT_SHIFT 16
53#define BCM43xx_DMA32_RXRING 0x14
54#define BCM43xx_DMA32_RXINDEX 0x18
55#define BCM43xx_DMA32_RXSTATUS 0x1C
56#define BCM43xx_DMA32_RXDPTR 0x00000FFF
57#define BCM43xx_DMA32_RXSTATE 0x0000F000
58#define BCM43xx_DMA32_RXSTAT_DISABLED 0x00000000
59#define BCM43xx_DMA32_RXSTAT_ACTIVE 0x00001000
60#define BCM43xx_DMA32_RXSTAT_IDLEWAIT 0x00002000
61#define BCM43xx_DMA32_RXSTAT_STOPPED 0x00003000
62#define BCM43xx_DMA32_RXERROR 0x000F0000
63#define BCM43xx_DMA32_RXERR_NOERR 0x00000000
64#define BCM43xx_DMA32_RXERR_PROT 0x00010000
65#define BCM43xx_DMA32_RXERR_OVERFLOW 0x00020000
66#define BCM43xx_DMA32_RXERR_BUFWRITE 0x00030000
67#define BCM43xx_DMA32_RXERR_DESCREAD 0x00040000
68#define BCM43xx_DMA32_RXACTIVE 0xFFF00000
69
70/* 32-bit DMA descriptor. */
71struct bcm43xx_dmadesc32 {
72 __le32 control;
73 __le32 address;
74} __attribute__((__packed__));
75#define BCM43xx_DMA32_DCTL_BYTECNT 0x00001FFF
76#define BCM43xx_DMA32_DCTL_ADDREXT_MASK 0x00030000
77#define BCM43xx_DMA32_DCTL_ADDREXT_SHIFT 16
78#define BCM43xx_DMA32_DCTL_DTABLEEND 0x10000000
79#define BCM43xx_DMA32_DCTL_IRQ 0x20000000
80#define BCM43xx_DMA32_DCTL_FRAMEEND 0x40000000
81#define BCM43xx_DMA32_DCTL_FRAMESTART 0x80000000
82
83/* Address field Routing value. */
84#define BCM43xx_DMA32_ROUTING 0xC0000000
85#define BCM43xx_DMA32_ROUTING_SHIFT 30
86#define BCM43xx_DMA32_NOTRANS 0x00000000
87#define BCM43xx_DMA32_CLIENTTRANS 0x40000000
88
89
90
91/*** 64-bit DMA Engine. ***/
92
93/* 64-bit DMA controller registers. */
94#define BCM43xx_DMA64_TXCTL 0x00
95#define BCM43xx_DMA64_TXENABLE 0x00000001
96#define BCM43xx_DMA64_TXSUSPEND 0x00000002
97#define BCM43xx_DMA64_TXLOOPBACK 0x00000004
98#define BCM43xx_DMA64_TXFLUSH 0x00000010
99#define BCM43xx_DMA64_TXADDREXT_MASK 0x00030000
100#define BCM43xx_DMA64_TXADDREXT_SHIFT 16
101#define BCM43xx_DMA64_TXINDEX 0x04
102#define BCM43xx_DMA64_TXRINGLO 0x08
103#define BCM43xx_DMA64_TXRINGHI 0x0C
104#define BCM43xx_DMA64_TXSTATUS 0x10
105#define BCM43xx_DMA64_TXSTATDPTR 0x00001FFF
106#define BCM43xx_DMA64_TXSTAT 0xF0000000
107#define BCM43xx_DMA64_TXSTAT_DISABLED 0x00000000
108#define BCM43xx_DMA64_TXSTAT_ACTIVE 0x10000000
109#define BCM43xx_DMA64_TXSTAT_IDLEWAIT 0x20000000
110#define BCM43xx_DMA64_TXSTAT_STOPPED 0x30000000
111#define BCM43xx_DMA64_TXSTAT_SUSP 0x40000000
112#define BCM43xx_DMA64_TXERROR 0x14
113#define BCM43xx_DMA64_TXERRDPTR 0x0001FFFF
114#define BCM43xx_DMA64_TXERR 0xF0000000
115#define BCM43xx_DMA64_TXERR_NOERR 0x00000000
116#define BCM43xx_DMA64_TXERR_PROT 0x10000000
117#define BCM43xx_DMA64_TXERR_UNDERRUN 0x20000000
118#define BCM43xx_DMA64_TXERR_TRANSFER 0x30000000
119#define BCM43xx_DMA64_TXERR_DESCREAD 0x40000000
120#define BCM43xx_DMA64_TXERR_CORE 0x50000000
121#define BCM43xx_DMA64_RXCTL 0x20
122#define BCM43xx_DMA64_RXENABLE 0x00000001
123#define BCM43xx_DMA64_RXFROFF_MASK 0x000000FE
124#define BCM43xx_DMA64_RXFROFF_SHIFT 1
125#define BCM43xx_DMA64_RXDIRECTFIFO 0x00000100
126#define BCM43xx_DMA64_RXADDREXT_MASK 0x00030000
127#define BCM43xx_DMA64_RXADDREXT_SHIFT 16
128#define BCM43xx_DMA64_RXINDEX 0x24
129#define BCM43xx_DMA64_RXRINGLO 0x28
130#define BCM43xx_DMA64_RXRINGHI 0x2C
131#define BCM43xx_DMA64_RXSTATUS 0x30
132#define BCM43xx_DMA64_RXSTATDPTR 0x00001FFF
133#define BCM43xx_DMA64_RXSTAT 0xF0000000
134#define BCM43xx_DMA64_RXSTAT_DISABLED 0x00000000
135#define BCM43xx_DMA64_RXSTAT_ACTIVE 0x10000000
136#define BCM43xx_DMA64_RXSTAT_IDLEWAIT 0x20000000
137#define BCM43xx_DMA64_RXSTAT_STOPPED 0x30000000
138#define BCM43xx_DMA64_RXSTAT_SUSP 0x40000000
139#define BCM43xx_DMA64_RXERROR 0x34
140#define BCM43xx_DMA64_RXERRDPTR 0x0001FFFF
141#define BCM43xx_DMA64_RXERR 0xF0000000
142#define BCM43xx_DMA64_RXERR_NOERR 0x00000000
143#define BCM43xx_DMA64_RXERR_PROT 0x10000000
144#define BCM43xx_DMA64_RXERR_UNDERRUN 0x20000000
145#define BCM43xx_DMA64_RXERR_TRANSFER 0x30000000
146#define BCM43xx_DMA64_RXERR_DESCREAD 0x40000000
147#define BCM43xx_DMA64_RXERR_CORE 0x50000000
148
149/* 64-bit DMA descriptor. */
150struct bcm43xx_dmadesc64 {
151 __le32 control0;
152 __le32 control1;
153 __le32 address_low;
154 __le32 address_high;
155} __attribute__((__packed__));
156#define BCM43xx_DMA64_DCTL0_DTABLEEND 0x10000000
157#define BCM43xx_DMA64_DCTL0_IRQ 0x20000000
158#define BCM43xx_DMA64_DCTL0_FRAMEEND 0x40000000
159#define BCM43xx_DMA64_DCTL0_FRAMESTART 0x80000000
160#define BCM43xx_DMA64_DCTL1_BYTECNT 0x00001FFF
161#define BCM43xx_DMA64_DCTL1_ADDREXT_MASK 0x00030000
162#define BCM43xx_DMA64_DCTL1_ADDREXT_SHIFT 16
163
164/* Address field Routing value. */
165#define BCM43xx_DMA64_ROUTING 0xC0000000
166#define BCM43xx_DMA64_ROUTING_SHIFT 30
167#define BCM43xx_DMA64_NOTRANS 0x00000000
168#define BCM43xx_DMA64_CLIENTTRANS 0x80000000
169
170
171
172struct bcm43xx_dmadesc_generic {
173 union {
174 struct bcm43xx_dmadesc32 dma32;
175 struct bcm43xx_dmadesc64 dma64;
176 } __attribute__((__packed__));
177} __attribute__((__packed__));
178
179
180/* Misc DMA constants */
181#define BCM43xx_DMA_RINGMEMSIZE PAGE_SIZE
182#define BCM43xx_DMA0_RX_FRAMEOFFSET 30
183#define BCM43xx_DMA3_RX_FRAMEOFFSET 0
184
185
186/* DMA engine tuning knobs */
187#define BCM43xx_TXRING_SLOTS 512
188#define BCM43xx_RXRING_SLOTS 64
189#define BCM43xx_DMA0_RX_BUFFERSIZE (2304 + 100)
190#define BCM43xx_DMA3_RX_BUFFERSIZE 16
191/* Suspend the tx queue, if less than this percent slots are free. */
192#define BCM43xx_TXSUSPEND_PERCENT 20
193/* Resume the tx queue, if more than this percent slots are free. */
194#define BCM43xx_TXRESUME_PERCENT 50
195
196
197
198#ifdef CONFIG_BCM43XX_DMA
199
200
201struct sk_buff;
202struct bcm43xx_private;
203struct bcm43xx_xmitstatus;
204
205
206struct bcm43xx_dmadesc_meta {
207 /* The kernel DMA-able buffer. */
208 struct sk_buff *skb;
209 /* DMA base bus-address of the descriptor buffer. */
210 dma_addr_t dmaaddr;
211};
212
213struct bcm43xx_dmaring {
214 /* Kernel virtual base address of the ring memory. */
215 void *descbase;
216 /* Meta data about all descriptors. */
217 struct bcm43xx_dmadesc_meta *meta;
218 /* DMA Routing value. */
219 u32 routing;
220 /* (Unadjusted) DMA base bus-address of the ring memory. */
221 dma_addr_t dmabase;
222 /* Number of descriptor slots in the ring. */
223 int nr_slots;
224 /* Number of used descriptor slots. */
225 int used_slots;
226 /* Currently used slot in the ring. */
227 int current_slot;
228 /* Marks to suspend/resume the queue. */
229 int suspend_mark;
230 int resume_mark;
231 /* Frameoffset in octets. */
232 u32 frameoffset;
233 /* Descriptor buffer size. */
234 u16 rx_buffersize;
235 /* The MMIO base register of the DMA controller. */
236 u16 mmio_base;
237 /* DMA controller index number (0-5). */
238 int index;
239 /* Boolean. Is this a TX ring? */
240 u8 tx;
241 /* Boolean. 64bit DMA if true, 32bit DMA otherwise. */
242 u8 dma64;
243 /* Boolean. Are transfers suspended on this ring? */
244 u8 suspended;
245 struct bcm43xx_private *bcm;
246#ifdef CONFIG_BCM43XX_DEBUG
247 /* Maximum number of used slots. */
248 int max_used_slots;
249#endif /* CONFIG_BCM43XX_DEBUG*/
250};
251
252
253static inline
254int bcm43xx_dma_desc2idx(struct bcm43xx_dmaring *ring,
255 struct bcm43xx_dmadesc_generic *desc)
256{
257 if (ring->dma64) {
258 struct bcm43xx_dmadesc64 *dd64 = ring->descbase;
259 return (int)(&(desc->dma64) - dd64);
260 } else {
261 struct bcm43xx_dmadesc32 *dd32 = ring->descbase;
262 return (int)(&(desc->dma32) - dd32);
263 }
264}
265
266static inline
267struct bcm43xx_dmadesc_generic * bcm43xx_dma_idx2desc(struct bcm43xx_dmaring *ring,
268 int slot,
269 struct bcm43xx_dmadesc_meta **meta)
270{
271 *meta = &(ring->meta[slot]);
272 if (ring->dma64) {
273 struct bcm43xx_dmadesc64 *dd64 = ring->descbase;
274 return (struct bcm43xx_dmadesc_generic *)(&(dd64[slot]));
275 } else {
276 struct bcm43xx_dmadesc32 *dd32 = ring->descbase;
277 return (struct bcm43xx_dmadesc_generic *)(&(dd32[slot]));
278 }
279}
280
281static inline
282u32 bcm43xx_dma_read(struct bcm43xx_dmaring *ring,
283 u16 offset)
284{
285 return bcm43xx_read32(ring->bcm, ring->mmio_base + offset);
286}
287
288static inline
289void bcm43xx_dma_write(struct bcm43xx_dmaring *ring,
290 u16 offset, u32 value)
291{
292 bcm43xx_write32(ring->bcm, ring->mmio_base + offset, value);
293}
294
295
296int bcm43xx_dma_init(struct bcm43xx_private *bcm);
297void bcm43xx_dma_free(struct bcm43xx_private *bcm);
298
299int bcm43xx_dmacontroller_rx_reset(struct bcm43xx_private *bcm,
300 u16 dmacontroller_mmio_base,
301 int dma64);
302int bcm43xx_dmacontroller_tx_reset(struct bcm43xx_private *bcm,
303 u16 dmacontroller_mmio_base,
304 int dma64);
305
306u16 bcm43xx_dmacontroller_base(int dma64bit, int dmacontroller_idx);
307
308void bcm43xx_dma_tx_suspend(struct bcm43xx_dmaring *ring);
309void bcm43xx_dma_tx_resume(struct bcm43xx_dmaring *ring);
310
311void bcm43xx_dma_handle_xmitstatus(struct bcm43xx_private *bcm,
312 struct bcm43xx_xmitstatus *status);
313
314int bcm43xx_dma_tx(struct bcm43xx_private *bcm,
315 struct ieee80211_txb *txb);
316void bcm43xx_dma_rx(struct bcm43xx_dmaring *ring);
317
318/* Helper function that returns the dma mask for this device. */
319static inline
320u64 bcm43xx_get_supported_dma_mask(struct bcm43xx_private *bcm)
321{
322 int dma64 = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATEHIGH) &
323 BCM43xx_SBTMSTATEHIGH_DMA64BIT;
324 u16 mmio_base = bcm43xx_dmacontroller_base(dma64, 0);
325 u32 mask = BCM43xx_DMA32_TXADDREXT_MASK;
326
327 if (dma64)
328 return DMA_64BIT_MASK;
329 bcm43xx_write32(bcm, mmio_base + BCM43xx_DMA32_TXCTL, mask);
330 if (bcm43xx_read32(bcm, mmio_base + BCM43xx_DMA32_TXCTL) & mask)
331 return DMA_32BIT_MASK;
332 return DMA_30BIT_MASK;
333}
334
335#else /* CONFIG_BCM43XX_DMA */
336
337
338static inline
339int bcm43xx_dma_init(struct bcm43xx_private *bcm)
340{
341 return 0;
342}
343static inline
344void bcm43xx_dma_free(struct bcm43xx_private *bcm)
345{
346}
347static inline
348int bcm43xx_dmacontroller_rx_reset(struct bcm43xx_private *bcm,
349 u16 dmacontroller_mmio_base,
350 int dma64)
351{
352 return 0;
353}
354static inline
355int bcm43xx_dmacontroller_tx_reset(struct bcm43xx_private *bcm,
356 u16 dmacontroller_mmio_base,
357 int dma64)
358{
359 return 0;
360}
361static inline
362int bcm43xx_dma_tx(struct bcm43xx_private *bcm,
363 struct ieee80211_txb *txb)
364{
365 return 0;
366}
367static inline
368void bcm43xx_dma_handle_xmitstatus(struct bcm43xx_private *bcm,
369 struct bcm43xx_xmitstatus *status)
370{
371}
372static inline
373void bcm43xx_dma_rx(struct bcm43xx_dmaring *ring)
374{
375}
376static inline
377void bcm43xx_dma_tx_suspend(struct bcm43xx_dmaring *ring)
378{
379}
380static inline
381void bcm43xx_dma_tx_resume(struct bcm43xx_dmaring *ring)
382{
383}
384
385#endif /* CONFIG_BCM43XX_DMA */
386#endif /* BCM43xx_DMA_H_ */
generated by cgit v1.2.2 (git 2.25.0) at 2026-01-08 16:10:55 -0500