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hw/ssi/pnv_spi: Replace PnvXferBuffer with Fifo8 structure

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In PnvXferBuffer dynamically allocating and freeing is a
process overhead. Hence used an existing Fifo8 buffer with
capacity of 16 bytes.

Signed-off-by: Chalapathi V <chalapathi.v@linux.ibm.com>
Message-ID: <20250303141328.23991-2-chalapathi.v@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
This commit is contained in:
Chalapathi V 2025-03-03 08:13:25 -06:00 • committed by Nicholas Piggin
parent ffc2cabeb5
commit 17befecda8
2 changed files with 108 additions and 159 deletions
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3
include/hw/ssi/pnv_spi.h
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@ -23,6 +23,7 @@
#include "hw/ssi/ssi.h"
#include "hw/sysbus.h"
#include "qemu/fifo8.h"
#define TYPE_PNV_SPI "pnv-spi"
OBJECT_DECLARE_SIMPLE_TYPE(PnvSpi, PNV_SPI)
@ -37,6 +38,8 @@ typedef struct PnvSpi {
SSIBus *ssi_bus;
qemu_irq *cs_line;
MemoryRegion xscom_spic_regs;
Fifo8 tx_fifo;
Fifo8 rx_fifo;
/* SPI object number */
uint32_t spic_num;
uint8_t transfer_len;