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[Qemu-devel] [PATCH arm-devs v1 07/15] xilinx_spips: Trash LQ page cache
From: |
Peter Crosthwaite |
Subject: |
[Qemu-devel] [PATCH arm-devs v1 07/15] xilinx_spips: Trash LQ page cache on mode change |
Date: |
Wed, 3 Apr 2013 14:32:59 +1000 |
Invalidate the LQSPI cached page when transitioning into LQSPI mode.
Otherwise there is a possibility that the controller will return stale
data to the guest when transitioning back to LQ_MODE after a page
program.
Signed-off-by: Peter Crosthwaite <address@hidden>
---
hw/xilinx_spips.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/hw/xilinx_spips.c b/hw/xilinx_spips.c
index 78a3fec..4f921f8 100644
--- a/hw/xilinx_spips.c
+++ b/hw/xilinx_spips.c
@@ -390,6 +390,9 @@ static void xilinx_spips_write(void *opaque, hwaddr addr,
int mask = ~0;
int man_start_com = 0;
XilinxSPIPS *s = opaque;
+ /* FIXME: abstract away somehow */
+ XilinxQSPIPS *q = (XilinxQSPIPS *)object_dynamic_cast(OBJECT(s),
+ TYPE_XILINX_QSPIPS);
DB_PRINT("addr=" TARGET_FMT_plx " = %x\n", addr, (unsigned)value);
addr >>= 2;
@@ -435,6 +438,11 @@ static void xilinx_spips_write(void *opaque, hwaddr addr,
case R_TXD3:
tx_data_bytes(s, (uint32_t)value, 3);
goto no_reg_update;
+ case R_LQSPI_CFG:
+ if (q) {
+ q->lqspi_cached_addr = ~0ULL;
+ }
+ break;
}
s->regs[addr] = (s->regs[addr] & ~mask) | (value & mask);
no_reg_update:
--
1.7.0.4
- Re: [Qemu-devel] [PATCH arm-devs v1 03/15] xilinx_spips: Inhibit interrupts in LQSPI mode, (continued)
- [Qemu-devel] [PATCH arm-devs v1 04/15] xilinx_spips: Add verbose LQSPI debug output, Peter Crosthwaite, 2013/04/03
- [Qemu-devel] [PATCH arm-devs v1 05/15] xilinx_spips: lqspi: Dont trash config register, Peter Crosthwaite, 2013/04/03
- [Qemu-devel] [PATCH arm-devs v1 06/15] xilinx_spips: Fix QSPI FIFO size, Peter Crosthwaite, 2013/04/03
- [Qemu-devel] [PATCH arm-devs v1 07/15] xilinx_spips: Trash LQ page cache on mode change,
Peter Crosthwaite <=
- [Qemu-devel] [PATCH arm-devs v1 08/15] xilinx_spips: Add automatic start support, Peter Crosthwaite, 2013/04/03
- [Qemu-devel] [PATCH arm-devs v1 09/15] xilinx_spips: Implement automatic CS, Peter Crosthwaite, 2013/04/03
- [Qemu-devel] [PATCH arm-devs v1 10/15] xilinx_spips: Fix CTRL register RW bits, Peter Crosthwaite, 2013/04/03
- [Qemu-devel] [PATCH arm-devs v1 11/15] xilinx_spips: Fix striping behaviour, Peter Crosthwaite, 2013/04/03