diff options
author | Maxime Bizon <mbizon@freebox.fr> | 2013-06-04 22:53:35 +0100 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2013-06-10 14:28:28 -0700 |
commit | 6f00a0229627ca189529cad3f9154ac2f9e5c7db (patch) | |
tree | 20b010b5faa5fca26951f3f3575da92a9cf317fc /arch/mips/bcm63xx/dev-enet.c | |
parent | 0ae99b5fede6f3a8d252d50bb4aba29544295219 (diff) | |
download | op-kernel-dev-6f00a0229627ca189529cad3f9154ac2f9e5c7db.zip op-kernel-dev-6f00a0229627ca189529cad3f9154ac2f9e5c7db.tar.gz |
bcm63xx_enet: add support for Broadcom BCM63xx integrated gigabit switch
Newer Broadcom BCM63xx SoCs: 6328, 6362 and 6368 have an integrated switch
which needs to be driven slightly differently from the traditional
external switches. This patch introduces changes in arch/mips/bcm63xx in order
to:
- register a bcm63xx_enetsw driver instead of bcm63xx_enet driver
- update DMA channels configuration & state RAM base addresses
- add a new platform data configuration knob to define the number of
ports per switch/device and force link on some ports
- define the required switch registers
On the driver side, the following changes are required:
- the switch ports need to be polled to ensure the link is up and
running and RX/TX can properly work
- basic switch configuration needs to be performed for the switch to
forward packets to the CPU
- update the MIB counters since the integrated
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 | 113 |
1 files changed, 95 insertions, 18 deletions
diff --git a/arch/mips/bcm63xx/dev-enet.c b/arch/mips/bcm63xx/dev-enet.c index df5bf66..6cbaee0 100644 --- a/arch/mips/bcm63xx/dev-enet.c +++ b/arch/mips/bcm63xx/dev-enet.c @@ -104,6 +104,64 @@ static struct platform_device bcm63xx_enet1_device = { }, }; +static struct resource enetsw_res[] = { + { + /* start & end filled at runtime */ + .flags = IORESOURCE_MEM, + }, + { + /* start filled at runtime */ + .flags = IORESOURCE_IRQ, + }, + { + /* start filled at runtime */ + .flags = IORESOURCE_IRQ, + }, +}; + +static struct bcm63xx_enetsw_platform_data enetsw_pd; + +static struct platform_device bcm63xx_enetsw_device = { + .name = "bcm63xx_enetsw", + .num_resources = ARRAY_SIZE(enetsw_res), + .resource = enetsw_res, + .dev = { + .platform_data = &enetsw_pd, + }, +}; + +static int __init register_shared(void) +{ + int ret, chan_count; + + if (shared_device_registered) + return 0; + + shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA); + shared_res[0].end = shared_res[0].start; + shared_res[0].end += (RSET_ENETDMA_SIZE) - 1; + + if (BCMCPU_IS_6328() || BCMCPU_IS_6362() || BCMCPU_IS_6368()) + chan_count = 32; + else + chan_count = 16; + + shared_res[1].start = bcm63xx_regset_address(RSET_ENETDMAC); + shared_res[1].end = shared_res[1].start; + shared_res[1].end += RSET_ENETDMAC_SIZE(chan_count) - 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(chan_count) - 1; + + ret = platform_device_register(&bcm63xx_enet_shared_device); + if (ret) + return ret; + shared_device_registered = 1; + + return 0; +} + int __init bcm63xx_enet_register(int unit, const struct bcm63xx_enet_platform_data *pd) { @@ -117,24 +175,9 @@ int __init bcm63xx_enet_register(int unit, if (unit == 1 && BCMCPU_IS_6338()) return -ENODEV; - if (!shared_device_registered) { - shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA); - shared_res[0].end = shared_res[0].start; - 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) - return ret; - shared_device_registered = 1; - } + ret = register_shared(); + if (ret) + return ret; if (unit == 0) { enet0_res[0].start = bcm63xx_regset_address(RSET_ENET0); @@ -175,3 +218,37 @@ int __init bcm63xx_enet_register(int unit, return ret; return 0; } + +int __init +bcm63xx_enetsw_register(const struct bcm63xx_enetsw_platform_data *pd) +{ + int ret; + + if (!BCMCPU_IS_6328() && !BCMCPU_IS_6362() && !BCMCPU_IS_6368()) + return -ENODEV; + + ret = register_shared(); + if (ret) + return ret; + + enetsw_res[0].start = bcm63xx_regset_address(RSET_ENETSW); + enetsw_res[0].end = enetsw_res[0].start; + enetsw_res[0].end += RSET_ENETSW_SIZE - 1; + enetsw_res[1].start = bcm63xx_get_irq_number(IRQ_ENETSW_RXDMA0); + enetsw_res[2].start = bcm63xx_get_irq_number(IRQ_ENETSW_TXDMA0); + if (!enetsw_res[2].start) + enetsw_res[2].start = -1; + + memcpy(bcm63xx_enetsw_device.dev.platform_data, pd, sizeof(*pd)); + + if (BCMCPU_IS_6328()) + enetsw_pd.num_ports = ENETSW_PORTS_6328; + else if (BCMCPU_IS_6362() || BCMCPU_IS_6368()) + enetsw_pd.num_ports = ENETSW_PORTS_6368; + + ret = platform_device_register(&bcm63xx_enetsw_device); + if (ret) + return ret; + + return 0; +} |