Author: adrian
Date: Thu Jul 19 02:25:14 2012
New Revision: 238607
URL: http://svn.freebsd.org/changeset/base/238607

Log:
  Break out the TX descriptor link field into HAL methods.
  
  The DMA FIFO chips (AR93xx and later) differ slightly to th elegacy
  chips:
  
  * The RX DMA descriptors don't have a ds_link field;
  * The TX DMA descriptors have a ds_link field however at a different
    offset.
  
  This is a reimplementation based on what the reference driver and ath9k
  does.
  
  A subsequent commit will enable it in the TX and beacon paths.
  
  Obtained from:        Linux ath9k, Qualcomm Atheros

Modified:
  head/sys/dev/ath/ath_hal/ah.h
  head/sys/dev/ath/ath_hal/ar5210/ar5210.h
  head/sys/dev/ath/ath_hal/ar5210/ar5210_attach.c
  head/sys/dev/ath/ath_hal/ar5210/ar5210_xmit.c
  head/sys/dev/ath/ath_hal/ar5211/ar5211.h
  head/sys/dev/ath/ath_hal/ar5211/ar5211_attach.c
  head/sys/dev/ath/ath_hal/ar5211/ar5211_xmit.c
  head/sys/dev/ath/ath_hal/ar5212/ar5212.h
  head/sys/dev/ath/ath_hal/ar5212/ar5212_attach.c
  head/sys/dev/ath/ath_hal/ar5212/ar5212_xmit.c
  head/sys/dev/ath/if_athvar.h

Modified: head/sys/dev/ath/ath_hal/ah.h
==============================================================================
--- head/sys/dev/ath/ath_hal/ah.h       Wed Jul 18 23:32:12 2012        
(r238606)
+++ head/sys/dev/ath/ath_hal/ah.h       Thu Jul 19 02:25:14 2012        
(r238607)
@@ -1084,6 +1084,12 @@ struct ath_hal {
        void       __ahdecl(*ah_reqTxIntrDesc)(struct ath_hal *, struct 
ath_desc*);
        HAL_BOOL        __ahdecl(*ah_getTxCompletionRates)(struct ath_hal *,
                                const struct ath_desc *ds, int *rates, int 
*tries);
+       void      __ahdecl(*ah_setTxDescLink)(struct ath_hal *ah, void *ds,
+                               uint32_t link);
+       void      __ahdecl(*ah_getTxDescLink)(struct ath_hal *ah, void *ds,
+                               uint32_t *link);
+       void      __ahdecl(*ah_getTxDescLinkPtr)(struct ath_hal *ah, void *ds,
+                               uint32_t **linkptr);
 
        /* Receive Functions */
        uint32_t __ahdecl(*ah_getRxDP)(struct ath_hal*, HAL_RX_QUEUE);

Modified: head/sys/dev/ath/ath_hal/ar5210/ar5210.h
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5210/ar5210.h    Wed Jul 18 23:32:12 2012        
(r238606)
+++ head/sys/dev/ath/ath_hal/ar5210/ar5210.h    Thu Jul 19 02:25:14 2012        
(r238607)
@@ -179,6 +179,12 @@ extern  void ar5210GetTxIntrQueue(struct
 extern  void ar5210IntrReqTxDesc(struct ath_hal *ah, struct ath_desc *);
 extern HAL_BOOL ar5210GetTxCompletionRates(struct ath_hal *ah,
                const struct ath_desc *, int *rates, int *tries);
+extern void ar5210SetTxDescLink(struct ath_hal *ah, void *ds,
+               uint32_t link);
+extern void ar5210GetTxDescLink(struct ath_hal *ah, void *ds,
+               uint32_t *link);
+extern void ar5210GetTxDescLinkPtr(struct ath_hal *ah, void *ds,
+               uint32_t **linkptr);
 
 extern uint32_t ar5210GetRxDP(struct ath_hal *, HAL_RX_QUEUE);
 extern void ar5210SetRxDP(struct ath_hal *, uint32_t rxdp, HAL_RX_QUEUE);

Modified: head/sys/dev/ath/ath_hal/ar5210/ar5210_attach.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5210/ar5210_attach.c     Wed Jul 18 23:32:12 
2012        (r238606)
+++ head/sys/dev/ath/ath_hal/ar5210/ar5210_attach.c     Thu Jul 19 02:25:14 
2012        (r238607)
@@ -75,6 +75,9 @@ static const struct ath_hal_private ar52
        .ah_getTxIntrQueue              = ar5210GetTxIntrQueue,
        .ah_reqTxIntrDesc               = ar5210IntrReqTxDesc,
        .ah_getTxCompletionRates        = ar5210GetTxCompletionRates,
+       .ah_setTxDescLink               = ar5210SetTxDescLink,
+       .ah_getTxDescLink               = ar5210GetTxDescLink,
+       .ah_getTxDescLinkPtr            = ar5210GetTxDescLinkPtr,
 
        /* RX Functions */
        .ah_getRxDP                     = ar5210GetRxDP,

Modified: head/sys/dev/ath/ath_hal/ar5210/ar5210_xmit.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5210/ar5210_xmit.c       Wed Jul 18 23:32:12 
2012        (r238606)
+++ head/sys/dev/ath/ath_hal/ar5210/ar5210_xmit.c       Thu Jul 19 02:25:14 
2012        (r238607)
@@ -630,3 +630,36 @@ ar5210GetTxCompletionRates(struct ath_ha
 {
        return AH_FALSE;
 }
+
+/*
+ * Set the TX descriptor link pointer
+ */
+void
+ar5210SetTxDescLink(struct ath_hal *ah, void *ds, uint32_t link)
+{
+       struct ar5210_desc *ads = AR5210DESC(ds);
+
+       ads->ds_link = link;
+}
+
+/*
+ * Get the TX descriptor link pointer
+ */
+void
+ar5210GetTxDescLink(struct ath_hal *ah, void *ds, uint32_t *link)
+{
+       struct ar5210_desc *ads = AR5210DESC(ds);
+
+       *link = ads->ds_link;
+}
+
+/*
+ * Get a pointer to the TX descriptor link pointer
+ */
+void
+ar5210GetTxDescLinkPtr(struct ath_hal *ah, void *ds, uint32_t **linkptr)
+{
+       struct ar5210_desc *ads = AR5210DESC(ds);
+
+       *linkptr = &ads->ds_link;
+}

Modified: head/sys/dev/ath/ath_hal/ar5211/ar5211.h
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5211/ar5211.h    Wed Jul 18 23:32:12 2012        
(r238606)
+++ head/sys/dev/ath/ath_hal/ar5211/ar5211.h    Thu Jul 19 02:25:14 2012        
(r238607)
@@ -204,6 +204,12 @@ extern  void ar5211GetTxIntrQueue(struct
 extern  void ar5211IntrReqTxDesc(struct ath_hal *ah, struct ath_desc *);
 extern HAL_BOOL ar5211GetTxCompletionRates(struct ath_hal *ah,
                const struct ath_desc *ds0, int *rates, int *tries);
+extern void ar5211SetTxDescLink(struct ath_hal *ah, void *ds,
+               uint32_t link);
+extern void ar5211GetTxDescLink(struct ath_hal *ah, void *ds,
+               uint32_t *link);
+extern void ar5211GetTxDescLinkPtr(struct ath_hal *ah, void *ds,
+               uint32_t **linkptr);
 
 extern uint32_t ar5211GetRxDP(struct ath_hal *, HAL_RX_QUEUE);
 extern void ar5211SetRxDP(struct ath_hal *, uint32_t rxdp, HAL_RX_QUEUE);

Modified: head/sys/dev/ath/ath_hal/ar5211/ar5211_attach.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5211/ar5211_attach.c     Wed Jul 18 23:32:12 
2012        (r238606)
+++ head/sys/dev/ath/ath_hal/ar5211/ar5211_attach.c     Thu Jul 19 02:25:14 
2012        (r238607)
@@ -75,6 +75,9 @@ static const struct ath_hal_private ar52
        .ah_getTxIntrQueue              = ar5211GetTxIntrQueue,
        .ah_reqTxIntrDesc               = ar5211IntrReqTxDesc,
        .ah_getTxCompletionRates        = ar5211GetTxCompletionRates,
+       .ah_setTxDescLink               = ar5211SetTxDescLink,
+       .ah_getTxDescLink               = ar5211GetTxDescLink,
+       .ah_getTxDescLinkPtr            = ar5211GetTxDescLinkPtr,
 
        /* RX Functions */
        .ah_getRxDP                     = ar5211GetRxDP,

Modified: head/sys/dev/ath/ath_hal/ar5211/ar5211_xmit.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5211/ar5211_xmit.c       Wed Jul 18 23:32:12 
2012        (r238606)
+++ head/sys/dev/ath/ath_hal/ar5211/ar5211_xmit.c       Thu Jul 19 02:25:14 
2012        (r238607)
@@ -671,3 +671,27 @@ ar5211GetTxCompletionRates(struct ath_ha
        return AH_FALSE;
 }
 
+
+void
+ar5211SetTxDescLink(struct ath_hal *ah, void *ds, uint32_t link)
+{
+       struct ar5211_desc *ads = AR5211DESC(ds);
+
+       ads->ds_link = link;
+}
+
+void
+ar5211GetTxDescLink(struct ath_hal *ah, void *ds, uint32_t *link)
+{
+       struct ar5211_desc *ads = AR5211DESC(ds);
+
+       *link = ads->ds_link;
+}
+
+void
+ar5211GetTxDescLinkPtr(struct ath_hal *ah, void *ds, uint32_t **linkptr)
+{
+       struct ar5211_desc *ads = AR5211DESC(ds);
+
+       *linkptr = &ads->ds_link;
+}

Modified: head/sys/dev/ath/ath_hal/ar5212/ar5212.h
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5212/ar5212.h    Wed Jul 18 23:32:12 2012        
(r238606)
+++ head/sys/dev/ath/ath_hal/ar5212/ar5212.h    Thu Jul 19 02:25:14 2012        
(r238607)
@@ -602,6 +602,12 @@ extern  void ar5212GetTxIntrQueue(struct
 extern  void ar5212IntrReqTxDesc(struct ath_hal *ah, struct ath_desc *);
 extern HAL_BOOL ar5212GetTxCompletionRates(struct ath_hal *ah,
                const struct ath_desc *ds0, int *rates, int *tries);
+extern void ar5212SetTxDescLink(struct ath_hal *ah, void *ds,
+               uint32_t link);
+extern void ar5212GetTxDescLink(struct ath_hal *ah, void *ds,
+               uint32_t *link);
+extern void ar5212GetTxDescLinkPtr(struct ath_hal *ah, void *ds,
+               uint32_t **linkptr);
 
 extern const HAL_RATE_TABLE *ar5212GetRateTable(struct ath_hal *, u_int mode);
 

Modified: head/sys/dev/ath/ath_hal/ar5212/ar5212_attach.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5212/ar5212_attach.c     Wed Jul 18 23:32:12 
2012        (r238606)
+++ head/sys/dev/ath/ath_hal/ar5212/ar5212_attach.c     Thu Jul 19 02:25:14 
2012        (r238607)
@@ -71,6 +71,9 @@ static const struct ath_hal_private ar52
        .ah_getTxIntrQueue              = ar5212GetTxIntrQueue,
        .ah_reqTxIntrDesc               = ar5212IntrReqTxDesc,
        .ah_getTxCompletionRates        = ar5212GetTxCompletionRates,
+       .ah_setTxDescLink               = ar5212SetTxDescLink,
+       .ah_getTxDescLink               = ar5212GetTxDescLink,
+       .ah_getTxDescLinkPtr            = ar5212GetTxDescLinkPtr,
 
        /* RX Functions */
        .ah_getRxDP                     = ar5212GetRxDP,

Modified: head/sys/dev/ath/ath_hal/ar5212/ar5212_xmit.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5212/ar5212_xmit.c       Wed Jul 18 23:32:12 
2012        (r238606)
+++ head/sys/dev/ath/ath_hal/ar5212/ar5212_xmit.c       Thu Jul 19 02:25:14 
2012        (r238607)
@@ -971,3 +971,27 @@ ar5212GetTxCompletionRates(struct ath_ha
 
        return AH_TRUE;
 }  
+
+void
+ar5212SetTxDescLink(struct ath_hal *ah, void *ds, uint32_t link)
+{
+       struct ar5212_desc *ads = AR5212DESC(ds);
+
+       ads->ds_link = link;
+}
+
+void
+ar5212GetTxDescLink(struct ath_hal *ah, void *ds, uint32_t *link)
+{
+       struct ar5212_desc *ads = AR5212DESC(ds);
+
+       *link = ads->ds_link;
+}
+
+void
+ar5212GetTxDescLinkPtr(struct ath_hal *ah, void *ds, uint32_t **linkptr)
+{
+       struct ar5212_desc *ads = AR5212DESC(ds);
+
+       *linkptr = &ads->ds_link;
+}

Modified: head/sys/dev/ath/if_athvar.h
==============================================================================
--- head/sys/dev/ath/if_athvar.h        Wed Jul 18 23:32:12 2012        
(r238606)
+++ head/sys/dev/ath/if_athvar.h        Thu Jul 19 02:25:14 2012        
(r238607)
@@ -1067,6 +1067,12 @@ void     ath_intr(void *);
        ((*(_ah)->ah_getTxIntrQueue)((_ah), (_txqs)))
 #define ath_hal_gettxcompletionrates(_ah, _ds, _rates, _tries) \
        ((*(_ah)->ah_getTxCompletionRates)((_ah), (_ds), (_rates), (_tries)))
+#define ath_hal_settxdesclink(_ah, _ds, _link) \
+       ((*(_ah)->ah_setTxDescLink)((_ah), (_ds), (_link)))
+#define ath_hal_gettxdesclink(_ah, _ds, _link) \
+       ((*(_ah)->ah_getTxDescLink)((_ah), (_ds), (_link)))
+#define ath_hal_gettxdesclinkptr(_ah, _ds, _linkptr) \
+       ((*(_ah)->ah_getTxDescLinkPtr)((_ah), (_ds), (_linkptr)))
 
 #define        ath_hal_setupfirsttxdesc(_ah, _ds, _aggrlen, _flags, _txpower, \
                _txr0, _txtr0, _antm, _rcr, _rcd) \
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