From: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
To: qemu-devel@nongnu.org
Cc: figlesia@xilinx.com, peter.maydell@linaro.org,
sstabellini@kernel.org, edgar.iglesias@xilinx.com,
sai.pavan.boddu@xilinx.com, frasse.iglesias@gmail.com,
alistair@alistair23.me, richard.henderson@linaro.org,
frederic.konrad@adacore.com, qemu-arm@nongnu.org,
philmd@redhat.com, luc.michel@greensocs.com
Subject: [PATCH v1 2/5] dma/xlnx-zdma: Populate DBG0.CMN_BUF_FREE
Date: Thu, 2 Apr 2020 15:47:18 +0200 [thread overview]
Message-ID: <20200402134721.27863-3-edgar.iglesias@gmail.com> (raw)
In-Reply-To: <20200402134721.27863-1-edgar.iglesias@gmail.com>
From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
Populate DBG0.CMN_BUF_FREE so that SW can see some free space.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
---
hw/dma/xlnx-zdma.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/hw/dma/xlnx-zdma.c b/hw/dma/xlnx-zdma.c
index a6c5b2304a..6a4699757a 100644
--- a/hw/dma/xlnx-zdma.c
+++ b/hw/dma/xlnx-zdma.c
@@ -680,6 +680,12 @@ static RegisterAccessInfo zdma_regs_info[] = {
},{ .name = "ZDMA_CH_DBG0", .addr = A_ZDMA_CH_DBG0,
.rsvd = 0xfffffe00,
.ro = 0x1ff,
+
+ /*
+ * There's SW out there that will check the debug regs for free space.
+ * Claim that we always have 0x100 free.
+ */
+ .reset = 0x100
},{ .name = "ZDMA_CH_DBG1", .addr = A_ZDMA_CH_DBG1,
.rsvd = 0xfffffe00,
.ro = 0x1ff,
--
2.20.1
next prev parent reply other threads:[~2020-04-02 13:48 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-02 13:47 [PATCH v1 0/5] dma/xlnx-zdma: Bug fixes Edgar E. Iglesias
2020-04-02 13:47 ` [PATCH v1 1/5] dma/xlnx-zdma: Remove comment Edgar E. Iglesias
2020-04-02 16:57 ` Alistair Francis
2020-04-03 6:48 ` Francisco Iglesias
2020-04-02 13:47 ` Edgar E. Iglesias [this message]
2020-04-02 17:13 ` [PATCH v1 2/5] dma/xlnx-zdma: Populate DBG0.CMN_BUF_FREE Alistair Francis
2020-04-03 6:48 ` Francisco Iglesias
2020-04-02 13:47 ` [PATCH v1 3/5] dma/xlnx-zdma: Clear DMA_DONE when halting Edgar E. Iglesias
2020-04-02 17:15 ` Alistair Francis
2020-04-03 6:49 ` Francisco Iglesias
2020-04-02 13:47 ` [PATCH v1 4/5] dma/xlnx-zdma: Advance the descriptor address when stopping Edgar E. Iglesias
2020-04-02 17:16 ` Alistair Francis
2020-04-03 6:49 ` Francisco Iglesias
2020-04-02 13:47 ` [PATCH v1 5/5] dma/xlnx-zdma: Reorg to fix CUR_DSCR Edgar E. Iglesias
2020-04-02 22:47 ` Alistair Francis
2020-04-03 6:50 ` Francisco Iglesias
2020-04-03 18:39 ` Peter Maydell
2020-04-03 18:53 ` [PATCH v1 0/5] dma/xlnx-zdma: Bug fixes Peter Maydell
2020-04-04 12:29 ` Edgar E. Iglesias
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