linux/arch/mips/include/asm/device.h

/*
 * Arch specific extensions to struct device
 *
 * This file is released under the GPLv2
 */
#ifndef _ASM_MIPS_DEVICE_H
#define _ASM_MIPS_DEVICE_H

struct dev_archdata {
#ifdef CONFIG_DMA_PERDEV_COHERENT
	/* Non-zero if DMA is coherent with CPU caches */
	bool dma_coherent;
#endif
};

struct pdev_archdata {
};

#endif /* _ASM_MIPS_DEVICE_H*/
Driver core: add dev_archdata to struct device Add arch specific dev_archdata to struct device Adds an arch specific struct dev_arch to struct device. This enables architecture to add specific fields to every device in the system, like DMA operation pointers, NUMA node ID, firmware specific data, etc... Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Andi Kleen <ak@suse.de> Acked-By: David Howells <dhowells@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 2006-11-11 06:18:39 +00:00			`/*`
			`* Arch specific extensions to struct device`
			`*`
			`* This file is released under the GPLv2`
			`*/`
MIPS: Convert DMA to use dma-mapping-common.h Use asm-generic/dma-mapping-common.h to handle all DMA mapping operations and establish a default get_dma_ops() that forwards all operations to the existing code. Augment dev_archdata to carry a pointer to the struct dma_map_ops, allowing DMA operations to be overridden on a per device basis. Currently this is never filled in, so the default dma_map_ops are used. A follow-on patch sets this for Octeon PCI devices. Also initialize the dma_debug system as it is now used if it is configured. Includes fixes by Kevin Cernekee <cernekee@gmail.com>. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1637/ Patchwork: http://patchwork.linux-mips.org/patch/1678/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2010-10-01 20:27:32 +00:00			`#ifndef _ASM_MIPS_DEVICE_H`
			`#define _ASM_MIPS_DEVICE_H`

			`struct dev_archdata {`
MIPS: Support per-device DMA coherence On some MIPS systems, a subset of devices may have DMA coherent with CPU caches. For example in systems including a MIPS I/O Coherence Unit (IOCU), some devices may be connected to that IOCU whilst others are not. Prior to this patch, we have a plat_device_is_coherent() function but no implementation which does anything besides return a global true or false, optionally chosen at runtime. For devices such as those described above this is insufficient. Fix this by tracking DMA coherence on a per-device basis with a dma_coherent field in struct dev_archdata. Setting this from arch_setup_dma_ops() takes care of devices which set the dma-coherent property via device tree, and any PCI devices beneath a bridge described in DT, automatically. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14349/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2016-10-05 17:18:16 +00:00			`#ifdef CONFIG_DMA_PERDEV_COHERENT`
			`/* Non-zero if DMA is coherent with CPU caches */`
			`bool dma_coherent;`
			`#endif`
MIPS: Convert DMA to use dma-mapping-common.h Use asm-generic/dma-mapping-common.h to handle all DMA mapping operations and establish a default get_dma_ops() that forwards all operations to the existing code. Augment dev_archdata to carry a pointer to the struct dma_map_ops, allowing DMA operations to be overridden on a per device basis. Currently this is never filled in, so the default dma_map_ops are used. A follow-on patch sets this for Octeon PCI devices. Also initialize the dma_debug system as it is now used if it is configured. Includes fixes by Kevin Cernekee <cernekee@gmail.com>. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1637/ Patchwork: http://patchwork.linux-mips.org/patch/1678/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2010-10-01 20:27:32 +00:00			`};`

			`struct pdev_archdata {`
			`};`

			`#endif /* _ASM_MIPS_DEVICE_H*/`