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xlnx-versal-ospi: disable reentrancy detection for iomem_dac

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The OSPI DMA reads flash data through the OSPI linear address space (the
iomem_dac region), because of this the reentrancy guard introduced in
commit a2e1753b ("memory: prevent dma-reentracy issues") is disabled for
the memory region.

Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@amd.com>
Message-id: 20240219105637.65052-1-sai.pavan.boddu@amd.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Sai Pavan Boddu 2024-02-26 14:07:23 +00:00 committed by Peter Maydell
parent efabbc07e9
commit 3b3e4c2803
1 changed files with 6 additions and 0 deletions
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6
hw/ssi/xlnx-versal-ospi.c
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@ -1772,6 +1772,12 @@ static void xlnx_versal_ospi_init(Object *obj)
memory_region_init_io(&s->iomem_dac, obj, &ospi_dac_ops, s,
TYPE_XILINX_VERSAL_OSPI "-dac", 0x20000000);
sysbus_init_mmio(sbd, &s->iomem_dac);
/*
* The OSPI DMA reads flash data through the OSPI linear address space (the
* iomem_dac region), because of this the reentrancy guard needs to be
* disabled.
*/
s->iomem_dac.disable_reentrancy_guard = true;
sysbus_init_irq(sbd, &s->irq);