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[Qemu-devel] [PATCH v2 3/5] lsi: ignore write accesses to CTEST0 registe
From: |
Hervé Poussineau |
Subject: |
[Qemu-devel] [PATCH v2 3/5] lsi: ignore write accesses to CTEST0 registers |
Date: |
Sat, 14 Sep 2013 17:51:07 +0200 |
53C895A datasheet says that this register is read/write, and that the value
returned on read access is dependant of DMA FIFO state. However, nothing is
said for written value.
53C810A datasheet gives more insight about this register:
"This was a general purpose read/write register in previous SYM53C8XX
family chips. Although it is still a read/write register, Symbios reserves
the right to use these bits for future 53C8XX family enhancements."
This prevents going to the default case, which prints an error message.
Signed-off-by: Hervé Poussineau <address@hidden>
---
hw/scsi/lsi53c895a.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
index 764feaa..a9a9eca 100644
--- a/hw/scsi/lsi53c895a.c
+++ b/hw/scsi/lsi53c895a.c
@@ -1749,6 +1749,9 @@ static void lsi_reg_writeb(LSIState *s, int offset,
uint8_t val)
case 0x17: /* MBOX1 */
s->mbox1 = val;
break;
+ case 0x18: /* CTEST0 */
+ /* nothing to do */
+ break;
case 0x1a: /* CTEST2 */
s->ctest2 = val & LSI_CTEST2_PCICIE;
break;
--
1.7.10.4
- [Qemu-devel] [PATCH v2 0/5] lsi: small cleanup and add 53C810 variant, Hervé Poussineau, 2013/09/14
- [Qemu-devel] [PATCH v2 2/5] lsi: check ssid versus sdid only if ssid is valid, Hervé Poussineau, 2013/09/14
- [Qemu-devel] [PATCH v2 4/5] lsi: remove todo, Hervé Poussineau, 2013/09/14
- [Qemu-devel] [PATCH v2 1/5] lsi: use constant name instead of its value, Hervé Poussineau, 2013/09/14
- [Qemu-devel] [PATCH v2 3/5] lsi: ignore write accesses to CTEST0 registers,
Hervé Poussineau <=
- [Qemu-devel] [PATCH v2 5/5] lsi: add 53C810 variant, Hervé Poussineau, 2013/09/14
- Re: [Qemu-devel] [PATCH v2 0/5] lsi: small cleanup and add 53C810 variant, Paolo Bonzini, 2013/09/16