diff options
author | Daniel Axtens <dja@axtens.net> | 2015-04-10 13:15:47 +1000 |
---|---|---|
committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-04-11 20:49:17 +1000 |
commit | 97884e00e29ad6654b8b6939bb805b9d6303427c (patch) | |
tree | c9c154d1927be0cc17353d51c2e7ba47c81b3375 /arch/powerpc/kernel/dma-swiotlb.c | |
parent | 19124d6deed32c5c7096f1892dd9f3882cef4605 (diff) |
powerpc: fsl_pci, swiotlb: Move controller ops from ppc_md to controller_ops
Move the installation of DMA operations out of swiotlb's subsys
initcall, and into the generic PCI controller operations struct.
These ops are installed conditionally, based on the ppc_swiotlb_enable
global. The global can be set in two places:
- swiotlb_detect_4g, which is always called at the arch initcall level
- setup_pci_atmu, which is called as part of the fsl_add_bridge and
fsl_pci_syscore_do_resume.
fsl_pci_syscore_do_resume is called late enough that any changes as a
result of that call will have no effect.
As such, if we test the global and set the operations as part of
fsl_add_bridge, after the call to setup_pci_atmu, we can be confident
that it will cover all the PCI implementations affected by the changes
to dma-swiotlb.c.
Signed-off-by: Daniel Axtens <dja@axtens.net>
Acked-by: Scott Wood <scottwood@freescale.com>
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 | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c index 735979764cd4..6e8d764ce47b 100644 --- a/arch/powerpc/kernel/dma-swiotlb.c +++ b/arch/powerpc/kernel/dma-swiotlb.c @@ -116,16 +116,13 @@ void __init swiotlb_detect_4g(void) } } -static int __init swiotlb_late_init(void) +static int __init check_swiotlb_enabled(void) { - if (ppc_swiotlb_enable) { + if (ppc_swiotlb_enable) swiotlb_print_info(); - set_pci_dma_ops(&swiotlb_dma_ops); - ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb; - } else { + else swiotlb_free(); - } return 0; } -subsys_initcall(swiotlb_late_init); +subsys_initcall(check_swiotlb_enabled); |