static u64 supported_dma_mask(struct b43_wldev *dev)
{
u32 tmp;
u16 mmio_base;
switch (dev->dev->bus_type) {
#ifdef CPTCFG_B43_BCMA
case B43_BUS_BCMA:
tmp = bcma_aread32(dev->dev->bdev, BCMA_IOST);
if (tmp & BCMA_IOST_DMA64)
return DMA_BIT_MASK(64);
break;
#endif
#ifdef CPTCFG_B43_SSB
case B43_BUS_SSB:
tmp = ssb_read32(dev->dev->sdev, SSB_TMSHIGH);
if (tmp & SSB_TMSHIGH_DMA64)
return DMA_BIT_MASK(64);
break;
#endif
}
mmio_base = b43_dmacontroller_base(0, 0);
b43_write32(dev, mmio_base + B43_DMA32_TXCTL, B43_DMA32_TXADDREXT_MASK);
tmp = b43_read32(dev, mmio_base + B43_DMA32_TXCTL);
if (tmp & B43_DMA32_TXADDREXT_MASK)
return DMA_BIT_MASK(32);
return DMA_BIT_MASK(30);
}
/* Reset the TX DMA channel */
static int b43_dmacontroller_tx_reset(struct b43_wldev *dev, u16 mmio_base,
enum b43_dmatype type)
{
int i;
u32 value;
u16 offset;
might_sleep();
for (i = 0; i < 10; i++) {
offset = (type == B43_DMA_64BIT) ? B43_DMA64_TXSTATUS :
B43_DMA32_TXSTATUS;
value = b43_read32(dev, mmio_base + offset);
if (type == B43_DMA_64BIT) {
value &= B43_DMA64_TXSTAT;
if (value == B43_DMA64_TXSTAT_DISABLED ||
value == B43_DMA64_TXSTAT_IDLEWAIT ||
value == B43_DMA64_TXSTAT_STOPPED)
break;
} else {
value &= B43_DMA32_TXSTATE;
if (value == B43_DMA32_TXSTAT_DISABLED ||
value == B43_DMA32_TXSTAT_IDLEWAIT ||
value == B43_DMA32_TXSTAT_STOPPED)
break;
}
msleep(1);
}
offset = (type == B43_DMA_64BIT) ? B43_DMA64_TXCTL : B43_DMA32_TXCTL;
b43_write32(dev, mmio_base + offset, 0);
for (i = 0; i < 10; i++) {
offset = (type == B43_DMA_64BIT) ? B43_DMA64_TXSTATUS :
B43_DMA32_TXSTATUS;
value = b43_read32(dev, mmio_base + offset);
if (type == B43_DMA_64BIT) {
value &= B43_DMA64_TXSTAT;
if (value == B43_DMA64_TXSTAT_DISABLED) {
i = -1;
break;
}
} else {
value &= B43_DMA32_TXSTATE;
if (value == B43_DMA32_TXSTAT_DISABLED) {
i = -1;
break;
}
}
msleep(1);
}
if (i != -1) {
b43err(dev->wl, "DMA TX reset timed out\n");
return -ENODEV;
}
/* ensure the reset is completed. */
msleep(1);
return 0;
}
static void direct_fifo_rx(struct b43_wldev *dev, enum b43_dmatype type,
u16 mmio_base, bool enable)
{
u32 ctl;
if (type == B43_DMA_64BIT) {
ctl = b43_read32(dev, mmio_base + B43_DMA64_RXCTL);
ctl &= ~B43_DMA64_RXDIRECTFIFO;
if (enable)
ctl |= B43_DMA64_RXDIRECTFIFO;
b43_write32(dev, mmio_base + B43_DMA64_RXCTL, ctl);
} else {
ctl = b43_read32(dev, mmio_base + B43_DMA32_RXCTL);
ctl &= ~B43_DMA32_RXDIRECTFIFO;
if (enable)
ctl |= B43_DMA32_RXDIRECTFIFO;
b43_write32(dev, mmio_base + B43_DMA32_RXCTL, ctl);
}
}
int b43_pio_init(struct b43_wldev *dev)
{
struct b43_pio *pio = &dev->pio;
int err = -ENOMEM;
b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
& ~B43_MACCTL_BE);
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_RXPADOFF, 0);
pio->tx_queue_AC_BK = b43_setup_pioqueue_tx(dev, 0);
if (!pio->tx_queue_AC_BK)
goto out;
pio->tx_queue_AC_BE = b43_setup_pioqueue_tx(dev, 1);
if (!pio->tx_queue_AC_BE)
goto err_destroy_bk;
pio->tx_queue_AC_VI = b43_setup_pioqueue_tx(dev, 2);
if (!pio->tx_queue_AC_VI)
goto err_destroy_be;
pio->tx_queue_AC_VO = b43_setup_pioqueue_tx(dev, 3);
if (!pio->tx_queue_AC_VO)
goto err_destroy_vi;
pio->tx_queue_mcast = b43_setup_pioqueue_tx(dev, 4);
if (!pio->tx_queue_mcast)
goto err_destroy_vo;
pio->rx_queue = b43_setup_pioqueue_rx(dev, 0);
if (!pio->rx_queue)
goto err_destroy_mcast;
b43dbg(dev->wl, "PIO initialized\n");
err = 0;
out:
return err;
err_destroy_mcast:
destroy_queue_tx(pio, tx_queue_mcast);
err_destroy_vo:
destroy_queue_tx(pio, tx_queue_AC_VO);
err_destroy_vi:
destroy_queue_tx(pio, tx_queue_AC_VI);
err_destroy_be:
destroy_queue_tx(pio, tx_queue_AC_BE);
err_destroy_bk:
destroy_queue_tx(pio, tx_queue_AC_BK);
return err;
}
void b43_radio_unlock(struct b43_wldev *dev)
{
u32 macctl;
#if B43_DEBUG
B43_WARN_ON(!dev->phy.radio_locked);
dev->phy.radio_locked = false;
#endif
/* Commit any write */
b43_read16(dev, B43_MMIO_PHY_VER);
/* unlock */
macctl = b43_read32(dev, B43_MMIO_MACCTL);
macctl &= ~B43_MACCTL_RADIOLOCK;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
}
void b43_radio_lock(struct b43_wldev *dev)
{
u32 macctl;
#if B43_DEBUG
B43_WARN_ON(dev->phy.radio_locked);
dev->phy.radio_locked = true;
#endif
macctl = b43_read32(dev, B43_MMIO_MACCTL);
macctl |= B43_MACCTL_RADIOLOCK;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
/* Commit the write and wait for the firmware
* to finish any radio register access. */
b43_read32(dev, B43_MMIO_MACCTL);
udelay(10);
}
/* Reset the RX DMA channel */
static int b43_dmacontroller_rx_reset(struct b43_wldev *dev, u16 mmio_base,
enum b43_dmatype type)
{
int i;
u32 value;
u16 offset;
might_sleep();
offset = (type == B43_DMA_64BIT) ? B43_DMA64_RXCTL : B43_DMA32_RXCTL;
b43_write32(dev, mmio_base + offset, 0);
for (i = 0; i < 10; i++) {
offset = (type == B43_DMA_64BIT) ? B43_DMA64_RXSTATUS :
B43_DMA32_RXSTATUS;
value = b43_read32(dev, mmio_base + offset);
if (type == B43_DMA_64BIT) {
value &= B43_DMA64_RXSTAT;
if (value == B43_DMA64_RXSTAT_DISABLED) {
i = -1;
break;
}
} else {
value &= B43_DMA32_RXSTATE;
if (value == B43_DMA32_RXSTAT_DISABLED) {
i = -1;
break;
}
}
msleep(1);
}
if (i != -1) {
b43err(dev->wl, "DMA RX reset timed out\n");
return -ENODEV;
}
return 0;
}
