diff options
| -rw-r--r-- | arch/arm/mach-lpc32xx/common.c | 9 | ||||
| -rw-r--r-- | arch/arm/mach-lpc32xx/common.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-lpc32xx/include/mach/board.h | 15 | ||||
| -rw-r--r-- | drivers/net/ethernet/nxp/lpc_eth.c | 17 | ||||
| -rw-r--r-- | include/linux/soc/nxp/lpc32xx-misc.h | 24 |
5 files changed, 39 insertions, 27 deletions
diff --git a/arch/arm/mach-lpc32xx/common.c b/arch/arm/mach-lpc32xx/common.c index 5b71b4fab2cd..f648324d5fb4 100644 --- a/arch/arm/mach-lpc32xx/common.c +++ b/arch/arm/mach-lpc32xx/common.c @@ -8,6 +8,7 @@ */ #include <linux/init.h> +#include <linux/soc/nxp/lpc32xx-misc.h> #include <asm/mach/map.h> #include <asm/system_info.h> @@ -32,7 +33,7 @@ void lpc32xx_get_uid(u32 devid[4]) */ #define LPC32XX_IRAM_BANK_SIZE SZ_128K static u32 iram_size; -u32 lpc32xx_return_iram_size(void) +u32 lpc32xx_return_iram(void __iomem **mapbase, dma_addr_t *dmaaddr) { if (iram_size == 0) { u32 savedval1, savedval2; @@ -53,10 +54,14 @@ u32 lpc32xx_return_iram_size(void) } else iram_size = LPC32XX_IRAM_BANK_SIZE * 2; } + if (dmaaddr) + *dmaaddr = LPC32XX_IRAM_BASE; + if (mapbase) + *mapbase = io_p2v(LPC32XX_IRAM_BASE); return iram_size; } -EXPORT_SYMBOL_GPL(lpc32xx_return_iram_size); +EXPORT_SYMBOL_GPL(lpc32xx_return_iram); static struct map_desc lpc32xx_io_desc[] __initdata = { { diff --git a/arch/arm/mach-lpc32xx/common.h b/arch/arm/mach-lpc32xx/common.h index 8e597ce48a73..32f0ad217807 100644 --- a/arch/arm/mach-lpc32xx/common.h +++ b/arch/arm/mach-lpc32xx/common.h @@ -23,7 +23,6 @@ extern void __init lpc32xx_serial_init(void); */ extern void lpc32xx_get_uid(u32 devid[4]); -extern u32 lpc32xx_return_iram_size(void); /* * Pointers used for sizing and copying suspend function data */ diff --git a/arch/arm/mach-lpc32xx/include/mach/board.h b/arch/arm/mach-lpc32xx/include/mach/board.h deleted file mode 100644 index 476513d970a4..000000000000 --- a/arch/arm/mach-lpc32xx/include/mach/board.h +++ /dev/null @@ -1,15 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * arm/arch/mach-lpc32xx/include/mach/board.h - * - * Author: Kevin Wells <kevin.wells@nxp.com> - * - * Copyright (C) 2010 NXP Semiconductors - */ - -#ifndef __ASM_ARCH_BOARD_H -#define __ASM_ARCH_BOARD_H - -extern u32 lpc32xx_return_iram_size(void); - -#endif /* __ASM_ARCH_BOARD_H */ diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c index f7e11f1b0426..bcdd0adcfb0c 100644 --- a/drivers/net/ethernet/nxp/lpc_eth.c +++ b/drivers/net/ethernet/nxp/lpc_eth.c @@ -18,8 +18,8 @@ #include <linux/phy.h> #include <linux/platform_device.h> #include <linux/spinlock.h> +#include <linux/soc/nxp/lpc32xx-misc.h> -#include <mach/board.h> #include <mach/hardware.h> #include <mach/platform.h> @@ -1311,16 +1311,15 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) /* Get size of DMA buffers/descriptors region */ pldat->dma_buff_size = (ENET_TX_DESC + ENET_RX_DESC) * (ENET_MAXF_SIZE + sizeof(struct txrx_desc_t) + sizeof(struct rx_status_t)); - pldat->dma_buff_base_v = 0; if (use_iram_for_net(dev)) { - dma_handle = LPC32XX_IRAM_BASE; - if (pldat->dma_buff_size <= lpc32xx_return_iram_size()) - pldat->dma_buff_base_v = - io_p2v(LPC32XX_IRAM_BASE); - else + if (pldat->dma_buff_size > + lpc32xx_return_iram(&pldat->dma_buff_base_v, &dma_handle)) { + pldat->dma_buff_base_v = NULL; + pldat->dma_buff_size = 0; netdev_err(ndev, "IRAM not big enough for net buffers, using SDRAM instead.\n"); + } } if (pldat->dma_buff_base_v == 0) { @@ -1409,7 +1408,7 @@ err_out_unregister_netdev: unregister_netdev(ndev); err_out_dma_unmap: if (!use_iram_for_net(dev) || - pldat->dma_buff_size > lpc32xx_return_iram_size()) + pldat->dma_buff_size > lpc32xx_return_iram(NULL, NULL)) dma_free_coherent(dev, pldat->dma_buff_size, pldat->dma_buff_base_v, pldat->dma_buff_base_p); @@ -1436,7 +1435,7 @@ static int lpc_eth_drv_remove(struct platform_device *pdev) unregister_netdev(ndev); if (!use_iram_for_net(&pldat->pdev->dev) || - pldat->dma_buff_size > lpc32xx_return_iram_size()) + pldat->dma_buff_size > lpc32xx_return_iram(NULL, NULL)) dma_free_coherent(&pldat->pdev->dev, pldat->dma_buff_size, pldat->dma_buff_base_v, pldat->dma_buff_base_p); diff --git a/include/linux/soc/nxp/lpc32xx-misc.h b/include/linux/soc/nxp/lpc32xx-misc.h new file mode 100644 index 000000000000..f232e1a1bcdc --- /dev/null +++ b/include/linux/soc/nxp/lpc32xx-misc.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Author: Kevin Wells <kevin.wells@nxp.com> + * + * Copyright (C) 2010 NXP Semiconductors + */ + +#ifndef __SOC_LPC32XX_MISC_H +#define __SOC_LPC32XX_MISC_H + +#include <linux/types.h> + +#ifdef CONFIG_ARCH_LPC32XX +extern u32 lpc32xx_return_iram(void __iomem **mapbase, dma_addr_t *dmaaddr); +#else +static inline u32 lpc32xx_return_iram(void __iomem **mapbase, dma_addr_t *dmaaddr) +{ + *mapbase = NULL; + *dmaaddr = 0; + return 0; +} +#endif + +#endif /* __SOC_LPC32XX_MISC_H */ |