From d666cd0246f78bda9fbf92a7ded20d1932078652 Mon Sep 17 00:00:00 2001 From: Kevin Cernekee Date: Mon, 20 Oct 2014 21:28:05 -0700 Subject: MIPS: bcm3384: Initial commit of bcm3384 platform support This supports SMP Linux running on the BCM3384 Zephyr (BMIPS5000) application processor, with fully functional UART and USB 1.1/2.0. Device Tree is used to configure the following items: - All peripherals - Early console base address - SMP or UP mode - MIPS counter frequency - Memory size / regions - DMA offset - Kernel command line The DT-enabled bootloader and build instructions are posted at https://github.com/Broadcom/aeolus Signed-off-by: Kevin Cernekee Cc: f.fainelli@gmail.com Cc: mbizon@freebox.fr Cc: jogo@openwrt.org Cc: jfraser@broadcom.com Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8170/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/mach-bcm3384/dma-coherence.h | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 arch/mips/include/asm/mach-bcm3384/dma-coherence.h (limited to 'arch/mips/include/asm/mach-bcm3384/dma-coherence.h') diff --git a/arch/mips/include/asm/mach-bcm3384/dma-coherence.h b/arch/mips/include/asm/mach-bcm3384/dma-coherence.h new file mode 100644 index 000000000000..a3be8e50e1f0 --- /dev/null +++ b/arch/mips/include/asm/mach-bcm3384/dma-coherence.h @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2006 Ralf Baechle + * Copyright (C) 2009 Broadcom Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __ASM_MACH_BCM3384_DMA_COHERENCE_H +#define __ASM_MACH_BCM3384_DMA_COHERENCE_H + +struct device; + +extern dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size); +extern dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page); +extern unsigned long plat_dma_addr_to_phys(struct device *dev, + dma_addr_t dma_addr); + +static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr, + size_t size, enum dma_data_direction direction) +{ +} + +static inline int plat_dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, + * so we can't guarantee allocations that must be + * within a tighter range than GFP_DMA.. + */ + if (mask < DMA_BIT_MASK(24)) + return 0; + + return 1; +} + +static inline int plat_device_is_coherent(struct device *dev) +{ + return 0; +} + +#endif /* __ASM_MACH_BCM3384_DMA_COHERENCE_H */ -- cgit v1.2.3