forked from Minki/linux
7c241d37fe
This patch fixes PIO mode on the softmac bcm43xx driver. (A dscape patch will follow). It mainly fixes endianess issues. This patch is tested on PowerPC32 and i386. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
151 lines
3.5 KiB
C
151 lines
3.5 KiB
C
#ifndef BCM43xx_PIO_H_
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#define BCM43xx_PIO_H_
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#include "bcm43xx.h"
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/skbuff.h>
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#define BCM43xx_PIO_TXCTL 0x00
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#define BCM43xx_PIO_TXDATA 0x02
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#define BCM43xx_PIO_TXQBUFSIZE 0x04
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#define BCM43xx_PIO_RXCTL 0x08
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#define BCM43xx_PIO_RXDATA 0x0A
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#define BCM43xx_PIO_TXCTL_WRITELO (1 << 0)
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#define BCM43xx_PIO_TXCTL_WRITEHI (1 << 1)
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#define BCM43xx_PIO_TXCTL_COMPLETE (1 << 2)
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#define BCM43xx_PIO_TXCTL_INIT (1 << 3)
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#define BCM43xx_PIO_TXCTL_SUSPEND (1 << 7)
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#define BCM43xx_PIO_RXCTL_DATAAVAILABLE (1 << 0)
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#define BCM43xx_PIO_RXCTL_READY (1 << 1)
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/* PIO constants */
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#define BCM43xx_PIO_MAXTXDEVQPACKETS 31
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#define BCM43xx_PIO_TXQADJUST 80
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/* PIO tuning knobs */
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#define BCM43xx_PIO_MAXTXPACKETS 256
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#ifdef CONFIG_BCM43XX_PIO
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struct bcm43xx_pioqueue;
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struct bcm43xx_xmitstatus;
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struct bcm43xx_pio_txpacket {
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struct bcm43xx_pioqueue *queue;
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struct ieee80211_txb *txb;
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struct list_head list;
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u8 xmitted_frags;
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u16 xmitted_octets;
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};
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#define pio_txpacket_getindex(packet) ((int)((packet) - (packet)->queue->tx_packets_cache))
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struct bcm43xx_pioqueue {
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struct bcm43xx_private *bcm;
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u16 mmio_base;
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u8 tx_suspended:1,
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need_workarounds:1; /* Workarounds needed for core.rev < 3 */
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/* Adjusted size of the device internal TX buffer. */
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u16 tx_devq_size;
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/* Used octets of the device internal TX buffer. */
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u16 tx_devq_used;
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/* Used packet slots in the device internal TX buffer. */
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u8 tx_devq_packets;
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/* Packets from the txfree list can
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* be taken on incoming TX requests.
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*/
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struct list_head txfree;
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unsigned int nr_txfree;
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/* Packets on the txqueue are queued,
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* but not completely written to the chip, yet.
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*/
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struct list_head txqueue;
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/* Packets on the txrunning queue are completely
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* posted to the device. We are waiting for the txstatus.
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*/
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struct list_head txrunning;
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/* Total number or packets sent.
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* (This counter can obviously wrap).
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*/
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unsigned int nr_tx_packets;
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struct tasklet_struct txtask;
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struct bcm43xx_pio_txpacket tx_packets_cache[BCM43xx_PIO_MAXTXPACKETS];
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};
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static inline
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u16 bcm43xx_pio_read(struct bcm43xx_pioqueue *queue,
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u16 offset)
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{
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return bcm43xx_read16(queue->bcm, queue->mmio_base + offset);
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}
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static inline
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void bcm43xx_pio_write(struct bcm43xx_pioqueue *queue,
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u16 offset, u16 value)
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{
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bcm43xx_write16(queue->bcm, queue->mmio_base + offset, value);
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mmiowb();
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}
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int bcm43xx_pio_init(struct bcm43xx_private *bcm);
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void bcm43xx_pio_free(struct bcm43xx_private *bcm);
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int bcm43xx_pio_tx(struct bcm43xx_private *bcm,
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struct ieee80211_txb *txb);
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void bcm43xx_pio_handle_xmitstatus(struct bcm43xx_private *bcm,
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struct bcm43xx_xmitstatus *status);
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void bcm43xx_pio_rx(struct bcm43xx_pioqueue *queue);
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void bcm43xx_pio_tx_suspend(struct bcm43xx_pioqueue *queue);
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void bcm43xx_pio_tx_resume(struct bcm43xx_pioqueue *queue);
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#else /* CONFIG_BCM43XX_PIO */
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static inline
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int bcm43xx_pio_init(struct bcm43xx_private *bcm)
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{
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return 0;
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}
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static inline
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void bcm43xx_pio_free(struct bcm43xx_private *bcm)
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{
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}
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static inline
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int bcm43xx_pio_tx(struct bcm43xx_private *bcm,
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struct ieee80211_txb *txb)
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{
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return 0;
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}
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static inline
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void bcm43xx_pio_handle_xmitstatus(struct bcm43xx_private *bcm,
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struct bcm43xx_xmitstatus *status)
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{
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}
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static inline
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void bcm43xx_pio_rx(struct bcm43xx_pioqueue *queue)
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{
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}
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static inline
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void bcm43xx_pio_tx_suspend(struct bcm43xx_pioqueue *queue)
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{
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}
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static inline
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void bcm43xx_pio_tx_resume(struct bcm43xx_pioqueue *queue)
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{
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}
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#endif /* CONFIG_BCM43XX_PIO */
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#endif /* BCM43xx_PIO_H_ */
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