diff options
| author | Maxime Bizon <mbizon@freebox.fr> | 2013-06-04 22:53:34 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-06-10 14:28:27 -0700 |
| commit | 0ae99b5fede6f3a8d252d50bb4aba29544295219 (patch) | |
| tree | 3be7197f59057e81f9167f81b658a5eba6cb10cc /arch/mips/bcm63xx/dev-enet.c | |
| parent | 7260aac97447a2b2cb9e8684d1162118c4426354 (diff) | |
bcm63xx_enet: split DMA channel register accesses
The current bcm63xx_enet driver always uses bcmenet_shared_base whenever
it needs to access DMA channel configuration space or access the DMA
channel state RAM. Split these register in 3 parts to be more accurate:
- global DMA configuration
- per DMA channel configuration space
- per DMA channel state RAM space
This is preliminary to support new chips where the global DMA
configuration remains the same, but there is a varying number of DMA
channels located at a different memory offset.
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/mips/bcm63xx/dev-enet.c')
| -rw-r--r-- | arch/mips/bcm63xx/dev-enet.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/arch/mips/bcm63xx/dev-enet.c b/arch/mips/bcm63xx/dev-enet.c index 39c23366c5c7..df5bf6686942 100644 --- a/arch/mips/bcm63xx/dev-enet.c +++ b/arch/mips/bcm63xx/dev-enet.c @@ -19,6 +19,16 @@ static struct resource shared_res[] = { .end = -1, /* filled at runtime */ .flags = IORESOURCE_MEM, }, + { + .start = -1, /* filled at runtime */ + .end = -1, /* filled at runtime */ + .flags = IORESOURCE_MEM, + }, + { + .start = -1, /* filled at runtime */ + .end = -1, /* filled at runtime */ + .flags = IORESOURCE_MEM, + }, }; static struct platform_device bcm63xx_enet_shared_device = { @@ -110,10 +120,15 @@ int __init bcm63xx_enet_register(int unit, if (!shared_device_registered) { shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA); shared_res[0].end = shared_res[0].start; - if (BCMCPU_IS_6338()) - shared_res[0].end += (RSET_ENETDMA_SIZE / 2) - 1; - else - shared_res[0].end += (RSET_ENETDMA_SIZE) - 1; + shared_res[0].end += (RSET_ENETDMA_SIZE) - 1; + + shared_res[1].start = bcm63xx_regset_address(RSET_ENETDMAC); + shared_res[1].end = shared_res[1].start; + shared_res[1].end += RSET_ENETDMAC_SIZE(16) - 1; + + shared_res[2].start = bcm63xx_regset_address(RSET_ENETDMAS); + shared_res[2].end = shared_res[2].start; + shared_res[2].end += RSET_ENETDMAS_SIZE(16) - 1; ret = platform_device_register(&bcm63xx_enet_shared_device); if (ret) |