On Wednesday 16 February 2011, Guan Xuetao wrote:
> +/*
> + * Register numbers.
> + */
> +#define I8042_COMMAND_REG ((unsigned long)&PS2_COMMAND)
> +#define I8042_STATUS_REG ((unsigned long)&PS2_STATUS)
> +#define I8042_DATA_REG ((unsigned long)&PS2_DATA)
> +
> +static inline int i8042_read_data(void)
> +{
> + return inb(I8042_DATA_REG);
> +}
> +
> +static inline int i8042_read_status(void)
> +{
> + return inb(I8042_STATUS_REG);
> +}
> +
This is not a correct way to use inb()/outb(), as far as I can tell:
PS2_COMMAND is an mmio pointer (or should be, see my other message).
inb() however is only defined on PCI/ISA PIO port numbers, which
are in the range between 0 and 65535, and typically get mapped
into the memory from the PCI driver.
Arnd
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