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[PATCH] bcm43xx: add functions bcm43xx_dma_read/write, bcm43xx_dma_tx_suspend/resume.

Browse source 
Signed-off-by: Michael Buesch <mbuesch@freenet.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Michael Buesch 2006-03-13 15:54:56 +01:00 committed by John W. Linville
parent e1b1b581b8
commit aae3778176
2 changed files with 51 additions and 28 deletions
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61
drivers/net/wireless/bcm43xx/bcm43xx_dma.c
View file

@ -374,13 +374,11 @@ static int dmacontroller_setup(struct bcm43xx_dmaring *ring)
if (ring->tx) {
/* Set Transmit Control register to "transmit enable" */
bcm43xx_write32(ring->bcm,
ring->mmio_base + BCM43xx_DMA_TX_CONTROL,
BCM43xx_DMA_TXCTRL_ENABLE);
bcm43xx_dma_write(ring, BCM43xx_DMA_TX_CONTROL,
BCM43xx_DMA_TXCTRL_ENABLE);
/* Set Transmit Descriptor ring address. */
bcm43xx_write32(ring->bcm,
ring->mmio_base + BCM43xx_DMA_TX_DESC_RING,
ring->dmabase + ring->memoffset);
bcm43xx_dma_write(ring, BCM43xx_DMA_TX_DESC_RING,
ring->dmabase + ring->memoffset);
} else {
err = alloc_initial_descbuffers(ring);
if (err)
@ -388,17 +386,12 @@ static int dmacontroller_setup(struct bcm43xx_dmaring *ring)
/* Set Receive Control "receive enable" and frame offset */
value = (ring->frameoffset << BCM43xx_DMA_RXCTRL_FRAMEOFF_SHIFT);
value |= BCM43xx_DMA_RXCTRL_ENABLE;
bcm43xx_write32(ring->bcm,
ring->mmio_base + BCM43xx_DMA_RX_CONTROL,
value);
bcm43xx_dma_write(ring, BCM43xx_DMA_RX_CONTROL, value);
/* Set Receive Descriptor ring address. */
bcm43xx_write32(ring->bcm,
ring->mmio_base + BCM43xx_DMA_RX_DESC_RING,
ring->dmabase + ring->memoffset);
bcm43xx_dma_write(ring, BCM43xx_DMA_RX_DESC_RING,
ring->dmabase + ring->memoffset);
/* Init the descriptor pointer. */
bcm43xx_write32(ring->bcm,
ring->mmio_base + BCM43xx_DMA_RX_DESC_INDEX,
200);
bcm43xx_dma_write(ring, BCM43xx_DMA_RX_DESC_INDEX, 200);
}
out:
@ -411,15 +404,11 @@ static void dmacontroller_cleanup(struct bcm43xx_dmaring *ring)
if (ring->tx) {
bcm43xx_dmacontroller_tx_reset(ring->bcm, ring->mmio_base);
/* Zero out Transmit Descriptor ring address. */
bcm43xx_write32(ring->bcm,
ring->mmio_base + BCM43xx_DMA_TX_DESC_RING,
0x00000000);
bcm43xx_dma_write(ring, BCM43xx_DMA_TX_DESC_RING, 0);
} else {
bcm43xx_dmacontroller_rx_reset(ring->bcm, ring->mmio_base);
/* Zero out Receive Descriptor ring address. */
bcm43xx_write32(ring->bcm,
ring->mmio_base + BCM43xx_DMA_RX_DESC_RING,
0x00000000);
bcm43xx_dma_write(ring, BCM43xx_DMA_RX_DESC_RING, 0);
}
}
@ -698,9 +687,8 @@ static void dmacontroller_poke_tx(struct bcm43xx_dmaring *ring,
*/
wmb();
slot = next_slot(ring, slot);
bcm43xx_write32(ring->bcm,
ring->mmio_base + BCM43xx_DMA_TX_DESC_INDEX,
(u32)(slot * sizeof(struct bcm43xx_dmadesc)));
bcm43xx_dma_write(ring, BCM43xx_DMA_TX_DESC_INDEX,
(u32)(slot * sizeof(struct bcm43xx_dmadesc)));
}
static int dma_tx_fragment(struct bcm43xx_dmaring *ring,
@ -940,7 +928,7 @@ void bcm43xx_dma_rx(struct bcm43xx_dmaring *ring)
#endif
assert(!ring->tx);
status = bcm43xx_read32(ring->bcm, ring->mmio_base + BCM43xx_DMA_RX_STATUS);
status = bcm43xx_dma_read(ring, BCM43xx_DMA_RX_STATUS);
descptr = (status & BCM43xx_DMA_RXSTAT_DPTR_MASK);
current_slot = descptr / sizeof(struct bcm43xx_dmadesc);
assert(current_slot >= 0 && current_slot < ring->nr_slots);
@ -953,10 +941,27 @@ void bcm43xx_dma_rx(struct bcm43xx_dmaring *ring)
ring->max_used_slots = used_slots;
#endif
}
bcm43xx_write32(ring->bcm,
ring->mmio_base + BCM43xx_DMA_RX_DESC_INDEX,
(u32)(slot * sizeof(struct bcm43xx_dmadesc)));
bcm43xx_dma_write(ring, BCM43xx_DMA_RX_DESC_INDEX,
(u32)(slot * sizeof(struct bcm43xx_dmadesc)));
ring->current_slot = slot;
}
void bcm43xx_dma_tx_suspend(struct bcm43xx_dmaring *ring)
{
assert(ring->tx);
bcm43xx_power_saving_ctl_bits(ring->bcm, -1, 1);
bcm43xx_dma_write(ring, BCM43xx_DMA_TX_CONTROL,
bcm43xx_dma_read(ring, BCM43xx_DMA_TX_CONTROL)
| BCM43xx_DMA_TXCTRL_SUSPEND);
}
void bcm43xx_dma_tx_resume(struct bcm43xx_dmaring *ring)
{
assert(ring->tx);
bcm43xx_dma_write(ring, BCM43xx_DMA_TX_CONTROL,
bcm43xx_dma_read(ring, BCM43xx_DMA_TX_CONTROL)
& ~BCM43xx_DMA_TXCTRL_SUSPEND);
bcm43xx_power_saving_ctl_bits(ring->bcm, -1, -1);
}
/* vim: set ts=8 sw=8 sts=8: */

18
drivers/net/wireless/bcm43xx/bcm43xx_dma.h
View file

@ -140,6 +140,21 @@ struct bcm43xx_dmaring {
};
static inline
u32 bcm43xx_dma_read(struct bcm43xx_dmaring *ring,
u16 offset)
{
return bcm43xx_read32(ring->bcm, ring->mmio_base + offset);
}
static inline
void bcm43xx_dma_write(struct bcm43xx_dmaring *ring,
u16 offset, u32 value)
{
bcm43xx_write32(ring->bcm, ring->mmio_base + offset, value);
}
int bcm43xx_dma_init(struct bcm43xx_private *bcm);
void bcm43xx_dma_free(struct bcm43xx_private *bcm);
@ -148,6 +163,9 @@ int bcm43xx_dmacontroller_rx_reset(struct bcm43xx_private *bcm,
int bcm43xx_dmacontroller_tx_reset(struct bcm43xx_private *bcm,
u16 dmacontroller_mmio_base);
void bcm43xx_dma_tx_suspend(struct bcm43xx_dmaring *ring);
void bcm43xx_dma_tx_resume(struct bcm43xx_dmaring *ring);
void bcm43xx_dma_handle_xmitstatus(struct bcm43xx_private *bcm,
struct bcm43xx_xmitstatus *status);