diff options
Diffstat (limited to 'drivers/net/wireless/b43/dma.h')
| -rw-r--r-- | drivers/net/wireless/b43/dma.h | 76 |
1 files changed, 48 insertions, 28 deletions
diff --git a/drivers/net/wireless/b43/dma.h b/drivers/net/wireless/b43/dma.h index c0d6b69e650..df8c8cdcbdb 100644 --- a/drivers/net/wireless/b43/dma.h +++ b/drivers/net/wireless/b43/dma.h @@ -1,18 +1,15 @@ #ifndef B43_DMA_H_ #define B43_DMA_H_ -#include <linux/list.h> -#include <linux/spinlock.h> -#include <linux/workqueue.h> -#include <linux/linkage.h> -#include <asm/atomic.h> +#include <linux/err.h> #include "b43.h" + /* DMA-Interrupt reasons. */ #define B43_DMAIRQ_FATALMASK ((1 << 10) | (1 << 11) | (1 << 12) \ | (1 << 14) | (1 << 15)) -#define B43_DMAIRQ_NONFATALMASK (1 << 13) +#define B43_DMAIRQ_RDESC_UFLOW (1 << 13) #define B43_DMAIRQ_RX_DONE (1 << 16) /*** 32-bit DMA Engine. ***/ @@ -23,6 +20,7 @@ #define B43_DMA32_TXSUSPEND 0x00000002 #define B43_DMA32_TXLOOPBACK 0x00000004 #define B43_DMA32_TXFLUSH 0x00000010 +#define B43_DMA32_TXPARITYDISABLE 0x00000800 #define B43_DMA32_TXADDREXT_MASK 0x00030000 #define B43_DMA32_TXADDREXT_SHIFT 16 #define B43_DMA32_TXRING 0x04 @@ -47,6 +45,7 @@ #define B43_DMA32_RXFROFF_MASK 0x000000FE #define B43_DMA32_RXFROFF_SHIFT 1 #define B43_DMA32_RXDIRECTFIFO 0x00000100 +#define B43_DMA32_RXPARITYDISABLE 0x00000800 #define B43_DMA32_RXADDREXT_MASK 0x00030000 #define B43_DMA32_RXADDREXT_SHIFT 16 #define B43_DMA32_RXRING 0x14 @@ -70,7 +69,7 @@ struct b43_dmadesc32 { __le32 control; __le32 address; -} __attribute__ ((__packed__)); +} __packed; #define B43_DMA32_DCTL_BYTECNT 0x00001FFF #define B43_DMA32_DCTL_ADDREXT_MASK 0x00030000 #define B43_DMA32_DCTL_ADDREXT_SHIFT 16 @@ -87,6 +86,7 @@ struct b43_dmadesc32 { #define B43_DMA64_TXSUSPEND 0x00000002 #define B43_DMA64_TXLOOPBACK 0x00000004 #define B43_DMA64_TXFLUSH 0x00000010 +#define B43_DMA64_TXPARITYDISABLE 0x00000800 #define B43_DMA64_TXADDREXT_MASK 0x00030000 #define B43_DMA64_TXADDREXT_SHIFT 16 #define B43_DMA64_TXINDEX 0x04 @@ -114,6 +114,7 @@ struct b43_dmadesc32 { #define B43_DMA64_RXFROFF_MASK 0x000000FE #define B43_DMA64_RXFROFF_SHIFT 1 #define B43_DMA64_RXDIRECTFIFO 0x00000100 +#define B43_DMA64_RXPARITYDISABLE 0x00000800 #define B43_DMA64_RXADDREXT_MASK 0x00030000 #define B43_DMA64_RXADDREXT_SHIFT 16 #define B43_DMA64_RXINDEX 0x24 @@ -143,7 +144,7 @@ struct b43_dmadesc64 { __le32 control1; __le32 address_low; __le32 address_high; -} __attribute__ ((__packed__)); +} __packed; #define B43_DMA64_DCTL0_DTABLEEND 0x10000000 #define B43_DMA64_DCTL0_IRQ 0x20000000 #define B43_DMA64_DCTL0_FRAMEEND 0x40000000 @@ -156,19 +157,26 @@ struct b43_dmadesc_generic { union { struct b43_dmadesc32 dma32; struct b43_dmadesc64 dma64; - } __attribute__ ((__packed__)); -} __attribute__ ((__packed__)); + } __packed; +} __packed; /* Misc DMA constants */ -#define B43_DMA_RINGMEMSIZE PAGE_SIZE -#define B43_DMA0_RX_FRAMEOFFSET 30 -#define B43_DMA3_RX_FRAMEOFFSET 0 +#define B43_DMA32_RINGMEMSIZE 4096 +#define B43_DMA64_RINGMEMSIZE 8192 +/* Offset of frame with actual data */ +#define B43_DMA0_RX_FW598_FO 38 +#define B43_DMA0_RX_FW351_FO 30 /* DMA engine tuning knobs */ -#define B43_TXRING_SLOTS 128 -#define B43_RXRING_SLOTS 64 -#define B43_DMA0_RX_BUFFERSIZE (2304 + 100) -#define B43_DMA3_RX_BUFFERSIZE 16 +#define B43_TXRING_SLOTS 256 +#define B43_RXRING_SLOTS 256 +#define B43_DMA0_RX_FW598_BUFSIZE (B43_DMA0_RX_FW598_FO + IEEE80211_MAX_FRAME_LEN) +#define B43_DMA0_RX_FW351_BUFSIZE (B43_DMA0_RX_FW351_FO + IEEE80211_MAX_FRAME_LEN) + +/* Pointer poison */ +#define B43_DMA_PTR_POISON ((void *)ERR_PTR(-ENOMEM)) +#define b43_dma_ptr_is_poisoned(ptr) (unlikely((ptr) == B43_DMA_PTR_POISON)) + struct sk_buff; struct b43_private; @@ -181,7 +189,6 @@ struct b43_dmadesc_meta { dma_addr_t dmaaddr; /* ieee80211 TX status. Only used once per 802.11 frag. */ bool is_last_fragment; - struct ieee80211_tx_status txstat; }; struct b43_dmaring; @@ -209,6 +216,12 @@ enum b43_dmatype { B43_DMA_64BIT = 64, }; +enum b43_addrtype { + B43_DMA_ADDR_LOW, + B43_DMA_ADDR_HIGH, + B43_DMA_ADDR_EXT, +}; + struct b43_dmaring { /* Lowlevel DMA ops. */ const struct b43_dma_ops *ops; @@ -216,7 +229,7 @@ struct b43_dmaring { void *descbase; /* Meta data about all descriptors. */ struct b43_dmadesc_meta *meta; - /* Cache of TX headers for each slot. + /* Cache of TX headers for each TX frame. * This is to avoid an allocation on each TX. * This is NULL for an RX ring. */ @@ -229,8 +242,6 @@ struct b43_dmaring { int used_slots; /* Currently used slot in the ring. */ int current_slot; - /* Total number of packets sent. Statistics only. */ - unsigned int nr_tx_packets; /* Frameoffset in octets. */ u32 frameoffset; /* Descriptor buffer size. */ @@ -245,15 +256,22 @@ struct b43_dmaring { enum b43_dmatype type; /* Boolean. Is this ring stopped at ieee80211 level? */ bool stopped; - /* Lock, only used for TX. */ - spinlock_t lock; + /* The QOS priority assigned to this ring. Only used for TX rings. + * This is the mac80211 "queue" value. */ + u8 queue_prio; struct b43_wldev *dev; #ifdef CONFIG_B43_DEBUG /* Maximum number of used slots. */ int max_used_slots; /* Last time we injected a ring overflow. */ unsigned long last_injected_overflow; -#endif /* CONFIG_B43_DEBUG */ + /* Statistics: Number of successfully transmitted packets */ + u64 nr_succeed_tx_packets; + /* Statistics: Number of failed TX packets */ + u64 nr_failed_tx_packets; + /* Statistics: Total number of TX plus all retries. */ + u64 nr_total_packet_tries; +#endif /* CONFIG_B43_DEBUG */ }; static inline u32 b43_dma_read(struct b43_dmaring *ring, u16 offset) @@ -272,14 +290,16 @@ void b43_dma_free(struct b43_wldev *dev); void b43_dma_tx_suspend(struct b43_wldev *dev); void b43_dma_tx_resume(struct b43_wldev *dev); -void b43_dma_get_tx_stats(struct b43_wldev *dev, - struct ieee80211_tx_queue_stats *stats); - int b43_dma_tx(struct b43_wldev *dev, - struct sk_buff *skb, struct ieee80211_tx_control *ctl); + struct sk_buff *skb); void b43_dma_handle_txstatus(struct b43_wldev *dev, const struct b43_txstatus *status); +void b43_dma_handle_rx_overflow(struct b43_dmaring *ring); + void b43_dma_rx(struct b43_dmaring *ring); +void b43_dma_direct_fifo_rx(struct b43_wldev *dev, + unsigned int engine_index, bool enable); + #endif /* B43_DMA_H_ */ |