2 * Copyright 2013-2016 Freescale Semiconductor Inc.
4 * Interface of the I/O services to send MC commands to the MC hardware
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39 #include <linux/types.h>
40 #include <linux/errno.h>
41 #include <linux/mutex.h>
42 #include <linux/spinlock.h>
45 * Bit masks for a MC I/O object (struct fsl_mc_io) flags
47 #define FSL_MC_IO_ATOMIC_CONTEXT_PORTAL 0x0001
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 */