cregit-Linux how code gets into the kernel

Release 4.14 arch/powerpc/include/asm/dcr-mmio.h

/*
 * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp.
 *                    <benh@kernel.crashing.org>
 *
 *   This program is free software;  you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   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.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program;  if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef _ASM_POWERPC_DCR_MMIO_H

#define _ASM_POWERPC_DCR_MMIO_H
#ifdef __KERNEL__

#include <asm/io.h>

typedef struct {
	
void __iomem *token;
	
unsigned int stride;
	
unsigned int base;

} dcr_host_mmio_t;


static inline bool dcr_map_ok_mmio(dcr_host_mmio_t host) { return host.token != NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Neuendorffer1482.35%150.00%
Benjamin Herrenschmidt317.65%150.00%
Total17100.00%2100.00%

extern dcr_host_mmio_t dcr_map_mmio(struct device_node *dev, unsigned int dcr_n, unsigned int dcr_c); extern void dcr_unmap_mmio(dcr_host_mmio_t host, unsigned int dcr_c);
static inline u32 dcr_read_mmio(dcr_host_mmio_t host, unsigned int dcr_n) { return in_be32(host.token + ((host.base + dcr_n) * host.stride)); }

Contributors

PersonTokensPropCommitsCommitProp
Benjamin Herrenschmidt2672.22%133.33%
Michael Ellerman822.22%133.33%
Stephen Neuendorffer25.56%133.33%
Total36100.00%3100.00%


static inline void dcr_write_mmio(dcr_host_mmio_t host, unsigned int dcr_n, u32 value) { out_be32(host.token + ((host.base + dcr_n) * host.stride), value); }

Contributors

PersonTokensPropCommitsCommitProp
Benjamin Herrenschmidt3075.00%133.33%
Michael Ellerman820.00%133.33%
Stephen Neuendorffer25.00%133.33%
Total40100.00%3100.00%

#endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_DCR_MMIO_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Benjamin Herrenschmidt11873.29%125.00%
Stephen Neuendorffer2314.29%125.00%
Michael Ellerman2012.42%250.00%
Total161100.00%4100.00%
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