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char: remaining switch to CharBackend in frontend

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Similar to previous change, for the remaining CharDriverState front ends
users.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20161022095318.17775-13-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc-André Lureau 2016-10-22 12:52:52 +03:00 • committed by Paolo Bonzini
parent becdfa00cf
commit 32a6ebecd2
14 changed files with 211 additions and 164 deletions
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12
hw/char/mcf_uart.c
View file

@ -10,6 +10,7 @@
#include "hw/m68k/mcf.h"
#include "sysemu/char.h"
#include "exec/address-spaces.h"
#include "qapi/error.h"
typedef struct {
MemoryRegion iomem;
@ -26,7 +27,7 @@ typedef struct {
int tx_enabled;
int rx_enabled;
qemu_irq irq;
CharDriverState *chr;
CharBackend chr;
} mcf_uart_state;
/* UART Status Register bits. */
@ -92,7 +93,7 @@ uint64_t mcf_uart_read(void *opaque, hwaddr addr,
if (s->fifo_len == 0)
s->sr &= ~MCF_UART_RxRDY;
mcf_uart_update(s);
qemu_chr_accept_input(s->chr);
qemu_chr_accept_input(s->chr.chr);
return val;
}
case 0x10:
@ -113,10 +114,11 @@ uint64_t mcf_uart_read(void *opaque, hwaddr addr,
static void mcf_uart_do_tx(mcf_uart_state *s)
{
if (s->tx_enabled && (s->sr & MCF_UART_TxEMP) == 0) {
if (s->chr)
if (s->chr.chr) {
/* XXX this blocks entire thread. Rewrite to use
* qemu_chr_fe_write and background I/O callbacks */
qemu_chr_fe_write_all(s->chr, (unsigned char *)&s->tb, 1);
qemu_chr_fe_write_all(s->chr.chr, (unsigned char *)&s->tb, 1);
}
s->sr |= MCF_UART_TxEMP;
}
if (s->tx_enabled) {
@ -280,9 +282,9 @@ void *mcf_uart_init(qemu_irq irq, CharDriverState *chr)
mcf_uart_state *s;
s = g_malloc0(sizeof(mcf_uart_state));
s->chr = chr;
s->irq = irq;
if (chr) {
qemu_chr_fe_init(&s->chr, chr, &error_abort);
qemu_chr_fe_claim_no_fail(chr);
qemu_chr_add_handlers(chr, mcf_uart_can_receive, mcf_uart_receive,
mcf_uart_event, s);