Differential D26976 Diff 79613 usr.sbin/bhyve/mmio/mmio_emul.h

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usr.sbin/bhyve/mmio/mmio_emul.h

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				#ifndef _EMUL_H_
				#define _EMUL_H_

				#include <sys/types.h>

				#include <assert.h>

				struct vmctx;
				struct mmio_devinst;

				// TODO suggestive naming
				struct mmio_devemu {
				char de_emu; / Device emulation name */

				/* Instance creation */
				int (de_init)(struct vmctx ctx, struct mmio_devinst *di,
				char *opts);

				/* Read / Write callbacks */
				void (de_write)(struct vmctx ctx, int vcpu,
				struct mmio_devinst *di, int baridx,
				uint64_t offset, int size, uint64_t val);

				uint64_t (de_read)(struct vmctx ctx, int vcpu,
				struct mmio_devinst *di, int baridx,
				uint64_t offset, int size);
				};

				#define MMIO_EMUL_SET(x) DATA_SET(mmio_set, x);
				#define DI_NAMESZ 40
				#define MMIO_REGMAX 0xff
				#define MMIO_REGNUM (MMIO_REGMAX + 1)

				struct devinst_addr {
				uint64_t baddr;
				uint64_t size;
				};

				enum lintr_stat {
				IDLE,
				ASSERTED,
				PENDING
				};

				// TODO suggestive naming
				struct mmio_devinst {
				struct mmio_devemu pi_d; / Back ref to device */
				struct vmctx pi_vmctx; / Owner VM context */
				/* unused for mmio device emulation; may be used as uniquifiers */
				int pi_slot, di_func;

				char pi_name[DI_NAMESZ]; /* Instance name */

				struct {
				enum lintr_stat state;
				int64_t irq;
				pthread_mutex_t lock;
				} di_lintr;

				void pi_arg; / Private data */

				u_char pi_cfgregs[MMIO_REGNUM];/* Config regsters */

				struct devinst_addr addr; /* Address info */
				};

				int mmio_parse_opts(const char *args);
				int mmio_alloc_mem(struct mmio_devinst *di);
				int init_mmio(struct vmctx *ctx);
				void mmio_lintr_request(struct mmio_devinst *di);
				void mmio_lintr_assert(struct mmio_devinst *di);
				void mmio_lintr_deassert(struct mmio_devinst *di);

				static __inline void
				mmio_set_cfgreg8(struct mmio_devinst *di, size_t offset, uint32_t val)
				{
				assert(offset <= MMIO_REGMAX);
				(uint32_t )(di->pi_cfgregs + offset) = val;
				}

				static __inline void
				mmio_set_cfgreg16(struct mmio_devinst *di, size_t offset, uint32_t val)
				{
				assert(offset <= (MMIO_REGMAX - 1) && (offset & 1) == 0);
				(uint32_t )(di->pi_cfgregs + offset) = val;
				}

				static __inline void
				mmio_set_cfgreg32(struct mmio_devinst *di, size_t offset, uint32_t val)
				{
				assert(offset <= (MMIO_REGMAX - 3) && (offset & 3) == 0);
				(uint32_t )(di->pi_cfgregs + offset) = val;
				}

				static __inline uint8_t
				mmio_get_cfgreg8(struct mmio_devinst *di, size_t offset)
				{
				assert(offset <= MMIO_REGMAX);
				return ((uint32_t )(di->pi_cfgregs + offset));
				}

				static __inline uint16_t
				mmio_get_cfgreg16(struct mmio_devinst *di, size_t offset)
				{
				assert(offset <= (MMIO_REGMAX - 1) && (offset & 1) == 0);
				return ((uint32_t )(di->pi_cfgregs + offset));
				}

				static __inline uint32_t
				mmio_get_cfgreg32(struct mmio_devinst *di, size_t offset)
				{
				assert(offset <= (MMIO_REGMAX - 3) && (offset & 3) == 0);
				return ((uint32_t )(di->pi_cfgregs + offset));
				}

				#endif /* _EMUL_H_ */