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hw/block/pflash_cfi02: Factor out pflash_reset_state_machine() 

There is multiple places resetting the internal state machine.
Factor the code out in a new pflash_reset_state_machine() method.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-Id: <20210310170528.1184868-8-philmd@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2021-03-10 00:27:18 +01:00
parent 7cb1096021
commit 7d1df53f14
1 changed files with 11 additions and 9 deletions
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20
hw/block/pflash_cfi02.c
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@ -184,11 +184,17 @@ static void pflash_setup_mappings(PFlashCFI02 *pfl)
pfl->rom_mode = true;
}
static void pflash_reset_state_machine(PFlashCFI02 *pfl)
{
trace_pflash_reset();
pfl->cmd = 0x00;
pfl->wcycle = 0;
}
static void pflash_mode_read_array(PFlashCFI02 *pfl)
{
trace_pflash_mode_read_array();
pfl->cmd = 0x00;
pfl->wcycle = 0;
pflash_reset_state_machine(pfl);
pfl->rom_mode = true;
memory_region_rom_device_set_romd(&pfl->orig_mem, true);
}
@ -330,8 +336,7 @@ static uint64_t pflash_read(void *opaque, hwaddr offset, unsigned int width)
default:
/* This should never happen : reset state & treat it as a read*/
DPRINTF("%s: unknown command state: %x\n", __func__, pfl->cmd);
pfl->wcycle = 0;
pfl->cmd = 0;
pflash_reset_state_machine(pfl);
/* fall through to the read code */
case 0x80: /* Erase (unlock) */
/* We accept reads during second unlock sequence... */
@ -669,8 +674,7 @@ static void pflash_write(void *opaque, hwaddr offset, uint64_t value,
}
reset_dq3(pfl);
timer_del(&pfl->timer);
pfl->wcycle = 0;
pfl->cmd = 0;
pflash_reset_state_machine(pfl);
return;
}
/*
@ -710,10 +714,8 @@ static void pflash_write(void *opaque, hwaddr offset, uint64_t value,
/* Reset flash */
reset_flash:
trace_pflash_reset();
pfl->bypass = 0;
pfl->wcycle = 0;
pfl->cmd = 0;
pflash_reset_state_machine(pfl);
return;
do_bypass: