diff options
Diffstat (limited to 'arch/mips/bcm63xx/dev-enet.c')
| -rw-r--r-- | arch/mips/bcm63xx/dev-enet.c | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/arch/mips/bcm63xx/dev-enet.c b/arch/mips/bcm63xx/dev-enet.c new file mode 100644 index 000000000..8e73d65f3 --- /dev/null +++ b/arch/mips/bcm63xx/dev-enet.c @@ -0,0 +1,327 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/export.h> +#include <bcm63xx_dev_enet.h> +#include <bcm63xx_io.h> +#include <bcm63xx_regs.h> + +static const unsigned long bcm6348_regs_enetdmac[] = { + [ENETDMAC_CHANCFG] = ENETDMAC_CHANCFG_REG, + [ENETDMAC_IR] = ENETDMAC_IR_REG, + [ENETDMAC_IRMASK] = ENETDMAC_IRMASK_REG, + [ENETDMAC_MAXBURST] = ENETDMAC_MAXBURST_REG, +}; + +static const unsigned long bcm6345_regs_enetdmac[] = { + [ENETDMAC_CHANCFG] = ENETDMA_6345_CHANCFG_REG, + [ENETDMAC_IR] = ENETDMA_6345_IR_REG, + [ENETDMAC_IRMASK] = ENETDMA_6345_IRMASK_REG, + [ENETDMAC_MAXBURST] = ENETDMA_6345_MAXBURST_REG, + [ENETDMAC_BUFALLOC] = ENETDMA_6345_BUFALLOC_REG, + [ENETDMAC_RSTART] = ENETDMA_6345_RSTART_REG, + [ENETDMAC_FC] = ENETDMA_6345_FC_REG, + [ENETDMAC_LEN] = ENETDMA_6345_LEN_REG, +}; + +const unsigned long *bcm63xx_regs_enetdmac; +EXPORT_SYMBOL(bcm63xx_regs_enetdmac); + +static __init void bcm63xx_enetdmac_regs_init(void) +{ + if (BCMCPU_IS_6345()) + bcm63xx_regs_enetdmac = bcm6345_regs_enetdmac; + else + bcm63xx_regs_enetdmac = bcm6348_regs_enetdmac; +} + +static struct resource shared_res[] = { + { + .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, + }, + { + .start = -1, /* filled at runtime */ + .end = -1, /* filled at runtime */ + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device bcm63xx_enet_shared_device = { + .name = "bcm63xx_enet_shared", + .id = 0, + .num_resources = ARRAY_SIZE(shared_res), + .resource = shared_res, +}; + +static int shared_device_registered; + +static u64 enet_dmamask = DMA_BIT_MASK(32); + +static struct resource enet0_res[] = { + { + .start = -1, /* filled at runtime */ + .end = -1, /* filled at runtime */ + .flags = IORESOURCE_MEM, + }, + { + .start = -1, /* filled at runtime */ + .flags = IORESOURCE_IRQ, + }, + { + .start = -1, /* filled at runtime */ + .flags = IORESOURCE_IRQ, + }, + { + .start = -1, /* filled at runtime */ + .flags = IORESOURCE_IRQ, + }, +}; + +static struct bcm63xx_enet_platform_data enet0_pd; + +static struct platform_device bcm63xx_enet0_device = { + .name = "bcm63xx_enet", + .id = 0, + .num_resources = ARRAY_SIZE(enet0_res), + .resource = enet0_res, + .dev = { + .platform_data = &enet0_pd, + .dma_mask = &enet_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, +}; + +static struct resource enet1_res[] = { + { + .start = -1, /* filled at runtime */ + .end = -1, /* filled at runtime */ + .flags = IORESOURCE_MEM, + }, + { + .start = -1, /* filled at runtime */ + .flags = IORESOURCE_IRQ, + }, + { + .start = -1, /* filled at runtime */ + .flags = IORESOURCE_IRQ, + }, + { + .start = -1, /* filled at runtime */ + .flags = IORESOURCE_IRQ, + }, +}; + +static struct bcm63xx_enet_platform_data enet1_pd; + +static struct platform_device bcm63xx_enet1_device = { + .name = "bcm63xx_enet", + .id = 1, + .num_resources = ARRAY_SIZE(enet1_res), + .resource = enet1_res, + .dev = { + .platform_data = &enet1_pd, + .dma_mask = &enet_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, +}; + +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, + .dma_mask = &enet_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, +}; + +static int __init register_shared(void) +{ + int ret, chan_count; + + if (shared_device_registered) + return 0; + + bcm63xx_enetdmac_regs_init(); + + shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA); + shared_res[0].end = shared_res[0].start; + if (BCMCPU_IS_6345()) + shared_res[0].end += (RSET_6345_ENETDMA_SIZE) - 1; + else + shared_res[0].end += (RSET_ENETDMA_SIZE) - 1; + + if (BCMCPU_IS_6328() || BCMCPU_IS_6362() || BCMCPU_IS_6368()) + chan_count = 32; + else if (BCMCPU_IS_6345()) + chan_count = 8; + 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) +{ + struct platform_device *pdev; + struct bcm63xx_enet_platform_data *dpd; + int ret; + + if (unit > 1) + return -ENODEV; + + if (unit == 1 && (BCMCPU_IS_6338() || BCMCPU_IS_6345())) + return -ENODEV; + + ret = register_shared(); + if (ret) + return ret; + + if (unit == 0) { + enet0_res[0].start = bcm63xx_regset_address(RSET_ENET0); + enet0_res[0].end = enet0_res[0].start; + enet0_res[0].end += RSET_ENET_SIZE - 1; + enet0_res[1].start = bcm63xx_get_irq_number(IRQ_ENET0); + enet0_res[2].start = bcm63xx_get_irq_number(IRQ_ENET0_RXDMA); + enet0_res[3].start = bcm63xx_get_irq_number(IRQ_ENET0_TXDMA); + pdev = &bcm63xx_enet0_device; + } else { + enet1_res[0].start = bcm63xx_regset_address(RSET_ENET1); + enet1_res[0].end = enet1_res[0].start; + enet1_res[0].end += RSET_ENET_SIZE - 1; + enet1_res[1].start = bcm63xx_get_irq_number(IRQ_ENET1); + enet1_res[2].start = bcm63xx_get_irq_number(IRQ_ENET1_RXDMA); + enet1_res[3].start = bcm63xx_get_irq_number(IRQ_ENET1_TXDMA); + pdev = &bcm63xx_enet1_device; + } + + /* copy given platform data */ + dpd = pdev->dev.platform_data; + memcpy(dpd, pd, sizeof(*pd)); + + /* adjust them in case internal phy is used */ + if (dpd->use_internal_phy) { + + /* internal phy only exists for enet0 */ + if (unit == 1) + return -ENODEV; + + dpd->phy_id = 1; + dpd->has_phy_interrupt = 1; + dpd->phy_interrupt = bcm63xx_get_irq_number(IRQ_ENET_PHY); + } + + dpd->dma_chan_en_mask = ENETDMAC_CHANCFG_EN_MASK; + dpd->dma_chan_int_mask = ENETDMAC_IR_PKTDONE_MASK; + if (BCMCPU_IS_6345()) { + dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_CHAINING_MASK; + dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_WRAP_EN_MASK; + dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_FLOWC_EN_MASK; + dpd->dma_chan_int_mask |= ENETDMA_IR_BUFDONE_MASK; + dpd->dma_chan_int_mask |= ENETDMA_IR_NOTOWNER_MASK; + dpd->dma_chan_width = ENETDMA_6345_CHAN_WIDTH; + dpd->dma_desc_shift = ENETDMA_6345_DESC_SHIFT; + } else { + dpd->dma_has_sram = true; + dpd->dma_chan_width = ENETDMA_CHAN_WIDTH; + } + + if (unit == 0) { + dpd->rx_chan = 0; + dpd->tx_chan = 1; + } else { + dpd->rx_chan = 2; + dpd->tx_chan = 3; + } + + ret = platform_device_register(pdev); + if (ret) + 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; + + enetsw_pd.dma_has_sram = true; + enetsw_pd.dma_chan_width = ENETDMA_CHAN_WIDTH; + enetsw_pd.dma_chan_en_mask = ENETDMAC_CHANCFG_EN_MASK; + enetsw_pd.dma_chan_int_mask = ENETDMAC_IR_PKTDONE_MASK; + + ret = platform_device_register(&bcm63xx_enetsw_device); + if (ret) + return ret; + + return 0; +} |