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Use bus handle to in `struct fdio' to read the chip registers.

This commit is contained in:
pk 2000-01-17 16:53:18 +00:00
parent 611f7a9938
commit 2d7f7ef7a6
1 changed files with 7 additions and 1 deletions
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8
sys/arch/sparc/sparc/bsd_fdintr.s
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@ -1,4 +1,4 @@
/* $NetBSD: bsd_fdintr.s,v 1.16 1999/03/24 05:51:11 mrg Exp $ */
/* $NetBSD: bsd_fdintr.s,v 1.17 2000/01/17 16:53:18 pk Exp $ */
/*
* Copyright (c) 1995 Paul Kranenburg
@ -182,9 +182,15 @@ _ENTRY(_C_LABEL(fdchwintr))
st %l6, [R_fdc + FDC_EVCNT]
! load chips register addresses
! NOTE: we ignore the bus tag here and assume the bus handle
! is the virtual address of the chip's registers.
ld [R_fdc + FDC_REG_HANDLE], %l7 ! get chip registers bus handle
ld [R_fdc + FDC_REG_MSR], R_msr ! get chip MSR reg addr
add R_msr, %l7, R_msr
ld [R_fdc + FDC_REG_FIFO], R_fifo ! get chip FIFO reg addr
add R_fifo, %l7, R_fifo
!!ld [R_fdc + FDC_REG_DOR], R_dor ! get chip DOR reg addr
!!add R_dor, %l7, R_dor
! find out what we are supposed to do
ld [R_fdc + FDC_ISTATE], %l7 ! examine flags