From aa1eb39e9266c51082ed2d8744e97ad674b6496c Mon Sep 17 00:00:00 2001 From: "leleraffa97@hotmail.it" Date: Thu, 31 Aug 2017 16:56:06 +0200 Subject: File system interface Basic file system implementation Path resolution work in progress --- sw/z80/kernel/include/sio.h | 42 ++++++++++++++++++------------------------ 1 file changed, 18 insertions(+), 24 deletions(-) (limited to 'sw/z80/kernel/include/sio.h') diff --git a/sw/z80/kernel/include/sio.h b/sw/z80/kernel/include/sio.h index 9dc47f6..2efd706 100644 --- a/sw/z80/kernel/include/sio.h +++ b/sw/z80/kernel/include/sio.h @@ -3,8 +3,7 @@ #include "types.h" -#define SIO_ROM 0x0 - +#define SIO_PORT_0 0x0 #define SIO_PORT_1 0x1 #define SIO_PORT_2 0x2 #define SIO_PORT_3 0x3 @@ -13,37 +12,32 @@ #define SIO_PORT_6 0x6 #define SIO_PORT_7 0x7 -/* initialize serial interface */ -void sio_init(); +/* current port in use */ +extern uint8_t sio_port; -/* return the device address in the address space */ -void * sio_dev_addr(uint8_t dev); -/* return the driver id to be used on dev */ -uint8_t sio_dev_driver(uint8_t dev); +/* current seek in the device */ +extern devsize_t sio_seek; -/* set current device in use */ -void sio_set_dev(uint8_t dev); -/* get current device in use */ -uint8_t sio_cdev(); +struct dev_buffer +{ + // TODO, bytes needed to the device buffer interface +}; -/* get pointer in given device */ -uint16_t sio_tellg(uint8_t dev); -/* get pointer in current device */ -uint16_t sio_ctellg(); +/* points to the buffers mapped in the I/O space */ +/* to be defined precisely in assemly */ +extern volatile struct dev_buffer sio_buffers[8]; -/* set pointer in given device */ -int sio_seekg(uint8_t dev, uint16_t value); -/* set pointer in current device */ -int sio_seekg(uint16_t value); +/* initialize serial interface */ +void sio_init(); /* syscall: read one byte from the current device */ uint8_t sio_recv(); /* syscall: write one byte into the current device */ void sio_send(uint8_t value); -/* read n bytes from the current device */ -char * sio_read(uint8_t *buffer, size_t n); -/* write n bytes into the current device */ -int sio_write(const uint8_t *buffer, size_t n); +/* read n bytes from the current port */ +size_t sio_read(void *buffer, size_t n); +/* write n bytes into the current port */ +int8_t sio_write(const void *buffer, size_t n); #endif -- cgit v1.2.1