| #ifndef B43legacy_PIO_H_ |
| #define B43legacy_PIO_H_ |
| |
| #include "b43legacy.h" |
| |
| #include <linux/interrupt.h> |
| #include <linux/list.h> |
| #include <linux/skbuff.h> |
| |
| |
| #define B43legacy_PIO_TXCTL 0x00 |
| #define B43legacy_PIO_TXDATA 0x02 |
| #define B43legacy_PIO_TXQBUFSIZE 0x04 |
| #define B43legacy_PIO_RXCTL 0x08 |
| #define B43legacy_PIO_RXDATA 0x0A |
| |
| #define B43legacy_PIO_TXCTL_WRITELO (1 << 0) |
| #define B43legacy_PIO_TXCTL_WRITEHI (1 << 1) |
| #define B43legacy_PIO_TXCTL_COMPLETE (1 << 2) |
| #define B43legacy_PIO_TXCTL_INIT (1 << 3) |
| #define B43legacy_PIO_TXCTL_SUSPEND (1 << 7) |
| |
| #define B43legacy_PIO_RXCTL_DATAAVAILABLE (1 << 0) |
| #define B43legacy_PIO_RXCTL_READY (1 << 1) |
| |
| /* PIO constants */ |
| #define B43legacy_PIO_MAXTXDEVQPACKETS 31 |
| #define B43legacy_PIO_TXQADJUST 80 |
| |
| /* PIO tuning knobs */ |
| #define B43legacy_PIO_MAXTXPACKETS 256 |
| |
| |
| |
| #ifdef CPTCFG_B43LEGACY_PIO |
| |
| |
| struct b43legacy_pioqueue; |
| struct b43legacy_xmitstatus; |
| |
| struct b43legacy_pio_txpacket { |
| struct b43legacy_pioqueue *queue; |
| struct sk_buff *skb; |
| struct list_head list; |
| }; |
| |
| #define pio_txpacket_getindex(packet) ((int)((packet) - \ |
| (packet)->queue->tx_packets_cache)) |
| |
| struct b43legacy_pioqueue { |
| struct b43legacy_wldev *dev; |
| u16 mmio_base; |
| |
| bool tx_suspended; |
| bool tx_frozen; |
| bool need_workarounds; /* Workarounds needed for core.rev < 3 */ |
| |
| /* Adjusted size of the device internal TX buffer. */ |
| u16 tx_devq_size; |
| /* Used octets of the device internal TX buffer. */ |
| u16 tx_devq_used; |
| /* Used packet slots in the device internal TX buffer. */ |
| u8 tx_devq_packets; |
| /* Packets from the txfree list can |
| * be taken on incoming TX requests. |
| */ |
| struct list_head txfree; |
| unsigned int nr_txfree; |
| /* Packets on the txqueue are queued, |
| * but not completely written to the chip, yet. |
| */ |
| struct list_head txqueue; |
| /* Packets on the txrunning queue are completely |
| * posted to the device. We are waiting for the txstatus. |
| */ |
| struct list_head txrunning; |
| struct tasklet_struct txtask; |
| struct b43legacy_pio_txpacket |
| tx_packets_cache[B43legacy_PIO_MAXTXPACKETS]; |
| }; |
| |
| static inline |
| u16 b43legacy_pio_read(struct b43legacy_pioqueue *queue, |
| u16 offset) |
| { |
| return b43legacy_read16(queue->dev, queue->mmio_base + offset); |
| } |
| |
| static inline |
| void b43legacy_pio_write(struct b43legacy_pioqueue *queue, |
| u16 offset, u16 value) |
| { |
| b43legacy_write16(queue->dev, queue->mmio_base + offset, value); |
| mmiowb(); |
| } |
| |
| |
| int b43legacy_pio_init(struct b43legacy_wldev *dev); |
| void b43legacy_pio_free(struct b43legacy_wldev *dev); |
| |
| int b43legacy_pio_tx(struct b43legacy_wldev *dev, |
| struct sk_buff *skb); |
| void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev, |
| const struct b43legacy_txstatus *status); |
| void b43legacy_pio_rx(struct b43legacy_pioqueue *queue); |
| |
| /* Suspend TX queue in hardware. */ |
| void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue); |
| void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue); |
| /* Suspend (freeze) the TX tasklet (software level). */ |
| void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev); |
| void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev); |
| |
| #else /* CPTCFG_B43LEGACY_PIO */ |
| |
| static inline |
| int b43legacy_pio_init(struct b43legacy_wldev *dev) |
| { |
| return 0; |
| } |
| static inline |
| void b43legacy_pio_free(struct b43legacy_wldev *dev) |
| { |
| } |
| static inline |
| int b43legacy_pio_tx(struct b43legacy_wldev *dev, |
| struct sk_buff *skb) |
| { |
| return 0; |
| } |
| static inline |
| void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev, |
| const struct b43legacy_txstatus *status) |
| { |
| } |
| static inline |
| void b43legacy_pio_rx(struct b43legacy_pioqueue *queue) |
| { |
| } |
| static inline |
| void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue) |
| { |
| } |
| static inline |
| void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue) |
| { |
| } |
| static inline |
| void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev) |
| { |
| } |
| static inline |
| void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev) |
| { |
| } |
| |
| #endif /* CPTCFG_B43LEGACY_PIO */ |
| #endif /* B43legacy_PIO_H_ */ |