101 lines
2.3 KiB
C
101 lines
2.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 TRUSTONIC LIMITED
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*/
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#ifndef _MC_MAIN_H_
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#define _MC_MAIN_H_
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#include <linux/device.h> /* dev_* macros */
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#include <linux/slab.h> /* gfp_t */
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#include <linux/fs.h> /* struct inode and struct file */
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#include <linux/mutex.h>
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#include <linux/version.h>
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#include <xen/xen.h>
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#define MC_VERSION(major, minor) \
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((((major) & 0x0000ffff) << 16) | ((minor) & 0x0000ffff))
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#define MC_VERSION_MAJOR(x) ((x) >> 16)
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#define MC_VERSION_MINOR(x) ((x) & 0xffff)
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#define mc_dev_err(__ret__, fmt, ...) \
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dev_err(g_ctx.mcd, "ERROR %d %s: " fmt "\n", \
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__ret__, __func__, ##__VA_ARGS__)
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#define mc_dev_info(fmt, ...) \
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dev_info(g_ctx.mcd, "%s: " fmt "\n", __func__, ##__VA_ARGS__)
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#ifdef DEBUG
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#define mc_dev_devel(fmt, ...) \
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dev_info(g_ctx.mcd, "%s: " fmt "\n", __func__, ##__VA_ARGS__)
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#else /* DEBUG */
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#define mc_dev_devel(...) do {} while (0)
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#endif /* !DEBUG */
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#define TEEC_TT_LOGIN_KERNEL 0x80000000
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#define TEE_START_NOT_TRIGGERED 1
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/* MobiCore Driver Kernel Module context data. */
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struct mc_device_ctx {
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struct device *mcd;
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/* debugfs root */
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struct dentry *debug_dir;
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/* Debug counters */
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atomic_t c_clients;
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atomic_t c_cbufs;
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atomic_t c_cwsms;
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atomic_t c_sessions;
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atomic_t c_wsms;
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atomic_t c_mmus;
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atomic_t c_maps;
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atomic_t c_slots;
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atomic_t c_xen_maps;
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atomic_t c_xen_fes;
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};
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extern struct mc_device_ctx g_ctx;
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/* Debug stuff */
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struct kasnprintf_buf {
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struct mutex mutex; /* Protect buf/size/off access */
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gfp_t gfp;
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void *buf;
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int size;
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int off;
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};
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/* Wait for TEE to start and get status */
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int mc_wait_tee_start(void);
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extern __printf(2, 3)
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int kasnprintf(struct kasnprintf_buf *buf, const char *fmt, ...);
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ssize_t debug_generic_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos,
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int (*function)(struct kasnprintf_buf *buf));
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int debug_generic_open(struct inode *inode, struct file *file);
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int debug_generic_release(struct inode *inode, struct file *file);
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/* Xen support */
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#ifdef CONFIG_XEN
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#define TRUSTONIC_XEN_DOMU
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#endif
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static inline bool is_xen_dom0(void)
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{
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return xen_domain() && xen_initial_domain();
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}
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static inline bool is_xen_domu(void)
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{
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#ifdef TRUSTONIC_XEN_DOMU
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return xen_domain() && !xen_initial_domain();
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#else
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return false;
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#endif
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}
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#endif /* _MC_MAIN_H_ */
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