1 /* Copyright 2013-2014 Freescale Semiconductor Inc.
3 * Interface of the I/O services to send MC commands to the MC hardware
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6 * modification, are permitted provided that the following conditions are met:
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8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
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11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the above-listed copyright holders nor the
13 * names of any contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
17 * ALTERNATIVELY, this software may be distributed under the terms of the
18 * GNU General Public License ("GPL") as published by the Free Software
19 * Foundation, either version 2 of that License or (at your option) any
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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38 #include <linux/types.h>
39 #include <linux/errno.h>
40 #include <linux/mutex.h>
41 #include <linux/spinlock.h>
44 * Bit masks for a MC I/O object (struct fsl_mc_io) flags
46 #define FSL_MC_IO_ATOMIC_CONTEXT_PORTAL 0x0001
48 struct fsl_mc_resource;
52 * struct fsl_mc_io - MC I/O object to be passed-in to mc_send_command()
53 * @dev: device associated with this Mc I/O object
54 * @flags: flags for mc_send_command()
55 * @portal_size: MC command portal size in bytes
56 * @portal_phys_addr: MC command portal physical address
57 * @portal_virt_addr: MC command portal virtual address
58 * @dpmcp_dev: pointer to the DPMCP device associated with the MC portal.
60 * Fields are only meaningful if the FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is not
62 * @mutex: Mutex to serialize mc_send_command() calls that use the same MC
63 * portal, if the fsl_mc_io object was created with the
64 * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag off. mc_send_command() calls for this
65 * fsl_mc_io object must be made only from non-atomic context.
67 * Fields are only meaningful if the FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is
69 * @spinlock: Spinlock to serialize mc_send_command() calls that use the same MC
70 * portal, if the fsl_mc_io object was created with the
71 * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag on. mc_send_command() calls for this
72 * fsl_mc_io object can be made from atomic or non-atomic context.
78 phys_addr_t portal_phys_addr;
79 void __iomem *portal_virt_addr;
80 struct fsl_mc_device *dpmcp_dev;
83 * This field is only meaningful if the
84 * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is not set
86 struct mutex mutex; /* serializes mc_send_command() */
89 * This field is only meaningful if the
90 * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is set
92 spinlock_t spinlock; /* serializes mc_send_command() */
96 int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd);
98 #endif /* _FSL_MC_SYS_H */