diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-02-13 08:01:20 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-18 22:41:03 +1100 |
| commit | 74194cdaac41f6dfaacd9433f739dcbd83125d0b (patch) | |
| tree | 6e2dc6d362d1c2f55e9678f4de418da50a86e5b5 /arch/powerpc/kernel/dma-swiotlb.c | |
| parent | 391133fd5adaba319795cd96882d1ea405c41cf6 (diff) | |
powerpc/dma: remove max_direct_dma_addr
The max_direct_dma_addr duplicates the bus_dma_mask field in struct
device. Use the generic field instead.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/dma-swiotlb.c')
| -rw-r--r-- | arch/powerpc/kernel/dma-swiotlb.c | 21 |
1 files changed, 1 insertions, 20 deletions
diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c index 42badc4bf536..0e21c318300e 100644 --- a/arch/powerpc/kernel/dma-swiotlb.c +++ b/arch/powerpc/kernel/dma-swiotlb.c @@ -24,21 +24,6 @@ unsigned int ppc_swiotlb_enable; -static u64 swiotlb_powerpc_get_required(struct device *dev) -{ - u64 end, mask, max_direct_dma_addr = dev->archdata.max_direct_dma_addr; - - end = memblock_end_of_DRAM(); - if (max_direct_dma_addr && end > max_direct_dma_addr) - end = max_direct_dma_addr; - end += get_dma_offset(dev); - - mask = 1ULL << (fls64(end) - 1); - mask += mask - 1; - - return mask; -} - /* * At the moment, all platforms that use this code only require * swiotlb to be used if we're operating on HIGHMEM. Since @@ -59,22 +44,18 @@ const struct dma_map_ops powerpc_swiotlb_dma_ops = { .sync_single_for_device = dma_direct_sync_single_for_device, .sync_sg_for_cpu = dma_direct_sync_sg_for_cpu, .sync_sg_for_device = dma_direct_sync_sg_for_device, - .get_required_mask = swiotlb_powerpc_get_required, + .get_required_mask = dma_direct_get_required_mask, }; static int ppc_swiotlb_bus_notify(struct notifier_block *nb, unsigned long action, void *data) { struct device *dev = data; - struct dev_archdata *sd; /* We are only intereted in device addition */ if (action != BUS_NOTIFY_ADD_DEVICE) return 0; - sd = &dev->archdata; - sd->max_direct_dma_addr = 0; - /* May need to bounce if the device can't address all of DRAM */ if ((dma_get_mask(dev) + 1) < memblock_end_of_DRAM()) set_dma_ops(dev, &powerpc_swiotlb_dma_ops); |