diff options
Diffstat (limited to 'drivers/net/wireless/b43legacy/dma.h')
| -rw-r--r-- | drivers/net/wireless/b43legacy/dma.h | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/drivers/net/wireless/b43legacy/dma.h b/drivers/net/wireless/b43legacy/dma.h deleted file mode 100644 index c3282f906..000000000 --- a/drivers/net/wireless/b43legacy/dma.h +++ /dev/null @@ -1,231 +0,0 @@ -#ifndef B43legacy_DMA_H_ -#define B43legacy_DMA_H_ - -#include <linux/list.h> -#include <linux/spinlock.h> -#include <linux/workqueue.h> -#include <linux/linkage.h> -#include <linux/atomic.h> - -#include "b43legacy.h" - - -/* DMA-Interrupt reasons. */ -#define B43legacy_DMAIRQ_FATALMASK ((1 << 10) | (1 << 11) | (1 << 12) \ - | (1 << 14) | (1 << 15)) -#define B43legacy_DMAIRQ_NONFATALMASK (1 << 13) -#define B43legacy_DMAIRQ_RX_DONE (1 << 16) - - -/*** 32-bit DMA Engine. ***/ - -/* 32-bit DMA controller registers. */ -#define B43legacy_DMA32_TXCTL 0x00 -#define B43legacy_DMA32_TXENABLE 0x00000001 -#define B43legacy_DMA32_TXSUSPEND 0x00000002 -#define B43legacy_DMA32_TXLOOPBACK 0x00000004 -#define B43legacy_DMA32_TXFLUSH 0x00000010 -#define B43legacy_DMA32_TXADDREXT_MASK 0x00030000 -#define B43legacy_DMA32_TXADDREXT_SHIFT 16 -#define B43legacy_DMA32_TXRING 0x04 -#define B43legacy_DMA32_TXINDEX 0x08 -#define B43legacy_DMA32_TXSTATUS 0x0C -#define B43legacy_DMA32_TXDPTR 0x00000FFF -#define B43legacy_DMA32_TXSTATE 0x0000F000 -#define B43legacy_DMA32_TXSTAT_DISABLED 0x00000000 -#define B43legacy_DMA32_TXSTAT_ACTIVE 0x00001000 -#define B43legacy_DMA32_TXSTAT_IDLEWAIT 0x00002000 -#define B43legacy_DMA32_TXSTAT_STOPPED 0x00003000 -#define B43legacy_DMA32_TXSTAT_SUSP 0x00004000 -#define B43legacy_DMA32_TXERROR 0x000F0000 -#define B43legacy_DMA32_TXERR_NOERR 0x00000000 -#define B43legacy_DMA32_TXERR_PROT 0x00010000 -#define B43legacy_DMA32_TXERR_UNDERRUN 0x00020000 -#define B43legacy_DMA32_TXERR_BUFREAD 0x00030000 -#define B43legacy_DMA32_TXERR_DESCREAD 0x00040000 -#define B43legacy_DMA32_TXACTIVE 0xFFF00000 -#define B43legacy_DMA32_RXCTL 0x10 -#define B43legacy_DMA32_RXENABLE 0x00000001 -#define B43legacy_DMA32_RXFROFF_MASK 0x000000FE -#define B43legacy_DMA32_RXFROFF_SHIFT 1 -#define B43legacy_DMA32_RXDIRECTFIFO 0x00000100 -#define B43legacy_DMA32_RXADDREXT_MASK 0x00030000 -#define B43legacy_DMA32_RXADDREXT_SHIFT 16 -#define B43legacy_DMA32_RXRING 0x14 -#define B43legacy_DMA32_RXINDEX 0x18 -#define B43legacy_DMA32_RXSTATUS 0x1C -#define B43legacy_DMA32_RXDPTR 0x00000FFF -#define B43legacy_DMA32_RXSTATE 0x0000F000 -#define B43legacy_DMA32_RXSTAT_DISABLED 0x00000000 -#define B43legacy_DMA32_RXSTAT_ACTIVE 0x00001000 -#define B43legacy_DMA32_RXSTAT_IDLEWAIT 0x00002000 -#define B43legacy_DMA32_RXSTAT_STOPPED 0x00003000 -#define B43legacy_DMA32_RXERROR 0x000F0000 -#define B43legacy_DMA32_RXERR_NOERR 0x00000000 -#define B43legacy_DMA32_RXERR_PROT 0x00010000 -#define B43legacy_DMA32_RXERR_OVERFLOW 0x00020000 -#define B43legacy_DMA32_RXERR_BUFWRITE 0x00030000 -#define B43legacy_DMA32_RXERR_DESCREAD 0x00040000 -#define B43legacy_DMA32_RXACTIVE 0xFFF00000 - -/* 32-bit DMA descriptor. */ -struct b43legacy_dmadesc32 { - __le32 control; - __le32 address; -} __packed; -#define B43legacy_DMA32_DCTL_BYTECNT 0x00001FFF -#define B43legacy_DMA32_DCTL_ADDREXT_MASK 0x00030000 -#define B43legacy_DMA32_DCTL_ADDREXT_SHIFT 16 -#define B43legacy_DMA32_DCTL_DTABLEEND 0x10000000 -#define B43legacy_DMA32_DCTL_IRQ 0x20000000 -#define B43legacy_DMA32_DCTL_FRAMEEND 0x40000000 -#define B43legacy_DMA32_DCTL_FRAMESTART 0x80000000 - - -/* Misc DMA constants */ -#define B43legacy_DMA_RINGMEMSIZE PAGE_SIZE -#define B43legacy_DMA0_RX_FRAMEOFFSET 30 -#define B43legacy_DMA3_RX_FRAMEOFFSET 0 - - -/* DMA engine tuning knobs */ -#define B43legacy_TXRING_SLOTS 128 -#define B43legacy_RXRING_SLOTS 64 -#define B43legacy_DMA0_RX_BUFFERSIZE (2304 + 100) -#define B43legacy_DMA3_RX_BUFFERSIZE 16 - - - -#ifdef CONFIG_B43LEGACY_DMA - - -struct sk_buff; -struct b43legacy_private; -struct b43legacy_txstatus; - - -struct b43legacy_dmadesc_meta { - /* The kernel DMA-able buffer. */ - struct sk_buff *skb; - /* DMA base bus-address of the descriptor buffer. */ - dma_addr_t dmaaddr; - /* ieee80211 TX status. Only used once per 802.11 frag. */ - bool is_last_fragment; -}; - -enum b43legacy_dmatype { - B43legacy_DMA_30BIT = 30, - B43legacy_DMA_32BIT = 32, -}; - -struct b43legacy_dmaring { - /* Kernel virtual base address of the ring memory. */ - void *descbase; - /* Meta data about all descriptors. */ - struct b43legacy_dmadesc_meta *meta; - /* Cache of TX headers for each slot. - * This is to avoid an allocation on each TX. - * This is NULL for an RX ring. - */ - u8 *txhdr_cache; - /* (Unadjusted) DMA base bus-address of the ring memory. */ - dma_addr_t dmabase; - /* Number of descriptor slots in the ring. */ - int nr_slots; - /* Number of used descriptor slots. */ - int used_slots; - /* Currently used slot in the ring. */ - int current_slot; - /* Frameoffset in octets. */ - u32 frameoffset; - /* Descriptor buffer size. */ - u16 rx_buffersize; - /* The MMIO base register of the DMA controller. */ - u16 mmio_base; - /* DMA controller index number (0-5). */ - int index; - /* Boolean. Is this a TX ring? */ - bool tx; - /* The type of DMA engine used. */ - enum b43legacy_dmatype type; - /* Boolean. Is this ring stopped at ieee80211 level? */ - bool stopped; - /* The QOS priority assigned to this ring. Only used for TX rings. - * This is the mac80211 "queue" value. */ - u8 queue_prio; - struct b43legacy_wldev *dev; -#ifdef CONFIG_B43LEGACY_DEBUG - /* Maximum number of used slots. */ - int max_used_slots; - /* Last time we injected a ring overflow. */ - unsigned long last_injected_overflow; -#endif /* CONFIG_B43LEGACY_DEBUG*/ -}; - - -static inline -u32 b43legacy_dma_read(struct b43legacy_dmaring *ring, - u16 offset) -{ - return b43legacy_read32(ring->dev, ring->mmio_base + offset); -} - -static inline -void b43legacy_dma_write(struct b43legacy_dmaring *ring, - u16 offset, u32 value) -{ - b43legacy_write32(ring->dev, ring->mmio_base + offset, value); -} - - -int b43legacy_dma_init(struct b43legacy_wldev *dev); -void b43legacy_dma_free(struct b43legacy_wldev *dev); - -void b43legacy_dma_tx_suspend(struct b43legacy_wldev *dev); -void b43legacy_dma_tx_resume(struct b43legacy_wldev *dev); - -int b43legacy_dma_tx(struct b43legacy_wldev *dev, - struct sk_buff *skb); -void b43legacy_dma_handle_txstatus(struct b43legacy_wldev *dev, - const struct b43legacy_txstatus *status); - -void b43legacy_dma_rx(struct b43legacy_dmaring *ring); - -#else /* CONFIG_B43LEGACY_DMA */ - - -static inline -int b43legacy_dma_init(struct b43legacy_wldev *dev) -{ - return 0; -} -static inline -void b43legacy_dma_free(struct b43legacy_wldev *dev) -{ -} -static inline -int b43legacy_dma_tx(struct b43legacy_wldev *dev, - struct sk_buff *skb) -{ - return 0; -} -static inline -void b43legacy_dma_handle_txstatus(struct b43legacy_wldev *dev, - const struct b43legacy_txstatus *status) -{ -} -static inline -void b43legacy_dma_rx(struct b43legacy_dmaring *ring) -{ -} -static inline -void b43legacy_dma_tx_suspend(struct b43legacy_wldev *dev) -{ -} -static inline -void b43legacy_dma_tx_resume(struct b43legacy_wldev *dev) -{ -} - -#endif /* CONFIG_B43LEGACY_DMA */ -#endif /* B43legacy_DMA_H_ */ |