diff options
author | John W. Linville <linville@tuxdriver.com> | 2011-08-29 20:52:20 +0200 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2011-08-29 20:52:20 +0200 |
commit | ba6e5eb107b4b26444cb67ce6fb8eb0973a97964 (patch) | |
tree | 9377baf652e0cd8360372020b0386e238d07a30d /drivers/net/wireless/b43/dma.c | |
parent | ixgbe: clear RNBC only for 82598 (diff) | |
parent | ath9k: add AR9580 support (diff) | |
download | linux-ba6e5eb107b4b26444cb67ce6fb8eb0973a97964.tar.xz linux-ba6e5eb107b4b26444cb67ce6fb8eb0973a97964.zip |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
Diffstat (limited to 'drivers/net/wireless/b43/dma.c')
-rw-r--r-- | drivers/net/wireless/b43/dma.c | 126 |
1 files changed, 88 insertions, 38 deletions
diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c index 481e534534eb..c5d890e74a1e 100644 --- a/drivers/net/wireless/b43/dma.c +++ b/drivers/net/wireless/b43/dma.c @@ -47,6 +47,38 @@ * into separate slots. */ #define TX_SLOTS_PER_FRAME 2 +static u32 b43_dma_address(struct b43_dma *dma, dma_addr_t dmaaddr, + enum b43_addrtype addrtype) +{ + u32 uninitialized_var(addr); + + switch (addrtype) { + case B43_DMA_ADDR_LOW: + addr = lower_32_bits(dmaaddr); + if (dma->translation_in_low) { + addr &= ~SSB_DMA_TRANSLATION_MASK; + addr |= dma->translation; + } + break; + case B43_DMA_ADDR_HIGH: + addr = upper_32_bits(dmaaddr); + if (!dma->translation_in_low) { + addr &= ~SSB_DMA_TRANSLATION_MASK; + addr |= dma->translation; + } + break; + case B43_DMA_ADDR_EXT: + if (dma->translation_in_low) + addr = lower_32_bits(dmaaddr); + else + addr = upper_32_bits(dmaaddr); + addr &= SSB_DMA_TRANSLATION_MASK; + addr >>= SSB_DMA_TRANSLATION_SHIFT; + break; + } + + return addr; +} /* 32bit DMA ops. */ static @@ -77,10 +109,9 @@ static void op32_fill_descriptor(struct b43_dmaring *ring, slot = (int)(&(desc->dma32) - descbase); B43_WARN_ON(!(slot >= 0 && slot < ring->nr_slots)); - addr = (u32) (dmaaddr & ~SSB_DMA_TRANSLATION_MASK); - addrext = (u32) (dmaaddr & SSB_DMA_TRANSLATION_MASK) - >> SSB_DMA_TRANSLATION_SHIFT; - addr |= ring->dev->dma.translation; + addr = b43_dma_address(&ring->dev->dma, dmaaddr, B43_DMA_ADDR_LOW); + addrext = b43_dma_address(&ring->dev->dma, dmaaddr, B43_DMA_ADDR_EXT); + ctl = bufsize & B43_DMA32_DCTL_BYTECNT; if (slot == ring->nr_slots - 1) ctl |= B43_DMA32_DCTL_DTABLEEND; @@ -170,11 +201,10 @@ static void op64_fill_descriptor(struct b43_dmaring *ring, slot = (int)(&(desc->dma64) - descbase); B43_WARN_ON(!(slot >= 0 && slot < ring->nr_slots)); - addrlo = (u32) (dmaaddr & 0xFFFFFFFF); - addrhi = (((u64) dmaaddr >> 32) & ~SSB_DMA_TRANSLATION_MASK); - addrext = (((u64) dmaaddr >> 32) & SSB_DMA_TRANSLATION_MASK) - >> SSB_DMA_TRANSLATION_SHIFT; - addrhi |= ring->dev->dma.translation; + addrlo = b43_dma_address(&ring->dev->dma, dmaaddr, B43_DMA_ADDR_LOW); + addrhi = b43_dma_address(&ring->dev->dma, dmaaddr, B43_DMA_ADDR_HIGH); + addrext = b43_dma_address(&ring->dev->dma, dmaaddr, B43_DMA_ADDR_EXT); + if (slot == ring->nr_slots - 1) ctl0 |= B43_DMA64_DCTL0_DTABLEEND; if (start) @@ -658,41 +688,37 @@ static int dmacontroller_setup(struct b43_dmaring *ring) int err = 0; u32 value; u32 addrext; - u32 trans = ring->dev->dma.translation; bool parity = ring->dev->dma.parity; + u32 addrlo; + u32 addrhi; if (ring->tx) { if (ring->type == B43_DMA_64BIT) { u64 ringbase = (u64) (ring->dmabase); + addrext = b43_dma_address(&ring->dev->dma, ringbase, B43_DMA_ADDR_EXT); + addrlo = b43_dma_address(&ring->dev->dma, ringbase, B43_DMA_ADDR_LOW); + addrhi = b43_dma_address(&ring->dev->dma, ringbase, B43_DMA_ADDR_HIGH); - addrext = ((ringbase >> 32) & SSB_DMA_TRANSLATION_MASK) - >> SSB_DMA_TRANSLATION_SHIFT; value = B43_DMA64_TXENABLE; value |= (addrext << B43_DMA64_TXADDREXT_SHIFT) & B43_DMA64_TXADDREXT_MASK; if (!parity) value |= B43_DMA64_TXPARITYDISABLE; b43_dma_write(ring, B43_DMA64_TXCTL, value); - b43_dma_write(ring, B43_DMA64_TXRINGLO, - (ringbase & 0xFFFFFFFF)); - b43_dma_write(ring, B43_DMA64_TXRINGHI, - ((ringbase >> 32) & - ~SSB_DMA_TRANSLATION_MASK) - | trans); + b43_dma_write(ring, B43_DMA64_TXRINGLO, addrlo); + b43_dma_write(ring, B43_DMA64_TXRINGHI, addrhi); } else { u32 ringbase = (u32) (ring->dmabase); + addrext = b43_dma_address(&ring->dev->dma, ringbase, B43_DMA_ADDR_EXT); + addrlo = b43_dma_address(&ring->dev->dma, ringbase, B43_DMA_ADDR_LOW); - addrext = (ringbase & SSB_DMA_TRANSLATION_MASK) - >> SSB_DMA_TRANSLATION_SHIFT; value = B43_DMA32_TXENABLE; value |= (addrext << B43_DMA32_TXADDREXT_SHIFT) & B43_DMA32_TXADDREXT_MASK; if (!parity) value |= B43_DMA32_TXPARITYDISABLE; b43_dma_write(ring, B43_DMA32_TXCTL, value); - b43_dma_write(ring, B43_DMA32_TXRING, - (ringbase & ~SSB_DMA_TRANSLATION_MASK) - | trans); + b43_dma_write(ring, B43_DMA32_TXRING, addrlo); } } else { err = alloc_initial_descbuffers(ring); @@ -700,9 +726,10 @@ static int dmacontroller_setup(struct b43_dmaring *ring) goto out; if (ring->type == B43_DMA_64BIT) { u64 ringbase = (u64) (ring->dmabase); + addrext = b43_dma_address(&ring->dev->dma, ringbase, B43_DMA_ADDR_EXT); + addrlo = b43_dma_address(&ring->dev->dma, ringbase, B43_DMA_ADDR_LOW); + addrhi = b43_dma_address(&ring->dev->dma, ringbase, B43_DMA_ADDR_HIGH); - addrext = ((ringbase >> 32) & SSB_DMA_TRANSLATION_MASK) - >> SSB_DMA_TRANSLATION_SHIFT; value = (ring->frameoffset << B43_DMA64_RXFROFF_SHIFT); value |= B43_DMA64_RXENABLE; value |= (addrext << B43_DMA64_RXADDREXT_SHIFT) @@ -710,19 +737,15 @@ static int dmacontroller_setup(struct b43_dmaring *ring) if (!parity) value |= B43_DMA64_RXPARITYDISABLE; b43_dma_write(ring, B43_DMA64_RXCTL, value); - b43_dma_write(ring, B43_DMA64_RXRINGLO, - (ringbase & 0xFFFFFFFF)); - b43_dma_write(ring, B43_DMA64_RXRINGHI, - ((ringbase >> 32) & - ~SSB_DMA_TRANSLATION_MASK) - | trans); + b43_dma_write(ring, B43_DMA64_RXRINGLO, addrlo); + b43_dma_write(ring, B43_DMA64_RXRINGHI, addrhi); b43_dma_write(ring, B43_DMA64_RXINDEX, ring->nr_slots * sizeof(struct b43_dmadesc64)); } else { u32 ringbase = (u32) (ring->dmabase); + addrext = b43_dma_address(&ring->dev->dma, ringbase, B43_DMA_ADDR_EXT); + addrlo = b43_dma_address(&ring->dev->dma, ringbase, B43_DMA_ADDR_LOW); - addrext = (ringbase & SSB_DMA_TRANSLATION_MASK) - >> SSB_DMA_TRANSLATION_SHIFT; value = (ring->frameoffset << B43_DMA32_RXFROFF_SHIFT); value |= B43_DMA32_RXENABLE; value |= (addrext << B43_DMA32_RXADDREXT_SHIFT) @@ -730,9 +753,7 @@ static int dmacontroller_setup(struct b43_dmaring *ring) if (!parity) value |= B43_DMA32_RXPARITYDISABLE; b43_dma_write(ring, B43_DMA32_RXCTL, value); - b43_dma_write(ring, B43_DMA32_RXRING, - (ringbase & ~SSB_DMA_TRANSLATION_MASK) - | trans); + b43_dma_write(ring, B43_DMA32_RXRING, addrlo); b43_dma_write(ring, B43_DMA32_RXINDEX, ring->nr_slots * sizeof(struct b43_dmadesc32)); } @@ -872,8 +893,17 @@ struct b43_dmaring *b43_setup_dmaring(struct b43_wldev *dev, ring->current_slot = -1; } else { if (ring->index == 0) { - ring->rx_buffersize = B43_DMA0_RX_BUFFERSIZE; - ring->frameoffset = B43_DMA0_RX_FRAMEOFFSET; + switch (dev->fw.hdr_format) { + case B43_FW_HDR_598: + ring->rx_buffersize = B43_DMA0_RX_FW598_BUFSIZE; + ring->frameoffset = B43_DMA0_RX_FW598_FO; + break; + case B43_FW_HDR_410: + case B43_FW_HDR_351: + ring->rx_buffersize = B43_DMA0_RX_FW351_BUFSIZE; + ring->frameoffset = B43_DMA0_RX_FW351_FO; + break; + } } else B43_WARN_ON(1); } @@ -1066,6 +1096,25 @@ static int b43_dma_set_mask(struct b43_wldev *dev, u64 mask) return 0; } +/* Some hardware with 64-bit DMA seems to be bugged and looks for translation + * bit in low address word instead of high one. + */ +static bool b43_dma_translation_in_low_word(struct b43_wldev *dev, + enum b43_dmatype type) +{ + if (type != B43_DMA_64BIT) + return 1; + +#ifdef CONFIG_B43_SSB + if (dev->dev->bus_type == B43_BUS_SSB && + dev->dev->sdev->bus->bustype == SSB_BUSTYPE_PCI && + !(dev->dev->sdev->bus->host_pci->is_pcie && + ssb_read32(dev->dev->sdev, SSB_TMSHIGH) & SSB_TMSHIGH_DMA64)) + return 1; +#endif + return 0; +} + int b43_dma_init(struct b43_wldev *dev) { struct b43_dma *dma = &dev->dma; @@ -1091,6 +1140,7 @@ int b43_dma_init(struct b43_wldev *dev) break; #endif } + dma->translation_in_low = b43_dma_translation_in_low_word(dev, type); dma->parity = true; #ifdef CONFIG_B43_BCMA |