bool vmm_ringbuf_enqueue(struct vmm_ringbuf *rb, void *srckey, bool overwrite)
{
u32 read_pos_mod, write_pos_mod;
bool isfull, update;
if (!rb || !srckey) {
return FALSE;
}
vmm_spin_lock(&rb->lock);
read_pos_mod = (rb->read_pos + 1);
if (rb->key_count <= read_pos_mod) {
read_pos_mod -= rb->key_count;
}
write_pos_mod = (rb->write_pos + 1);
if (rb->key_count <= write_pos_mod) {
write_pos_mod -= rb->key_count;
}
isfull = (rb->read_pos == write_pos_mod);
update = FALSE;
if (overwrite) {
if (isfull) {
rb->read_pos = read_pos_mod;
rb->avail_count--;
}
update = TRUE;
} else {
if (!isfull) {
update = TRUE;
}
}
if(update) {
switch(rb->key_size) {
case 1:
*((u8 *)(rb->keys + (rb->write_pos * rb->key_size)))
= *((u8 *)srckey);
break;
case 2:
*((u16 *)(rb->keys + (rb->write_pos * rb->key_size)))
= *((u16 *)srckey);
break;
case 4:
*((u32 *)(rb->keys + (rb->write_pos * rb->key_size)))
= *((u32 *)srckey);
break;
default:
vmm_memcpy(rb->keys + (rb->write_pos * rb->key_size),
srckey,
rb->key_size);
break;
};
rb->write_pos = write_pos_mod;
rb->avail_count++;
}
vmm_spin_unlock(&rb->lock);
return update;
}
static int arm11mpcore_scu_read(struct arm11mpcore_priv_state *s,
u32 offset, u32 *dst)
{
int rc = VMM_OK;
if (!s || !dst) {
return VMM_EFAIL;
}
vmm_spin_lock(&s->lock);
switch (offset) {
case 0x00: /* Control */
*dst = s->scu_control;
break;
case 0x04: /* Configuration */
*dst = (((1 << s->num_cpu) - 1) << 4) | (s->num_cpu - 1);
break;
case 0x08: /* CPU Status */
*dst = 0;
break;
case 0x0c: /* Invalidate all. */
*dst = 0;
break;
default:
rc = VMM_EFAIL;
break;
}
vmm_spin_unlock(&s->lock);
return rc;
}
static int arm11mpcore_scu_write(struct arm11mpcore_priv_state *s,
u32 offset, u32 src_mask, u32 src)
{
int rc = VMM_OK;
if (!s) {
return VMM_EFAIL;
}
src = src & ~src_mask;
vmm_spin_lock(&s->lock);
switch (offset) {
case 0x00: /* Control */
s->scu_control = src & 1;
break;
case 0x0c: /* Invalidate All. */
break;
default:
rc = VMM_EFAIL;
break;
}
vmm_spin_unlock(&s->lock);
return rc;
}
/* Process IRQ asserted via device emulation framework */
static void pl110_mux_in_irq_handle(u32 irq, int cpu, int level, void *opaque)
{
struct pl110_state *s = opaque;
vmm_spin_lock(&s->lock);
s->mux_ctrl = level;
vmm_spin_unlock(&s->lock);
}
static int pl110_enabled(struct pl110_state *s)
{
int ret;
vmm_spin_lock(&s->lock);
ret = __pl110_enabled(s);
vmm_spin_unlock(&s->lock);
return ret;
}
bool vmm_ringbuf_isempty(struct vmm_ringbuf *rb)
{
bool isempty;
if (!rb) {
return TRUE;
}
vmm_spin_lock(&rb->lock);
isempty = (rb->read_pos == rb->write_pos);
vmm_spin_unlock(&rb->lock);
return isempty;
}
u32 vmm_ringbuf_avail(struct vmm_ringbuf *rb)
{
u32 retval;
if (!rb) {
return 0;
}
vmm_spin_lock(&rb->lock);
retval = rb->avail_count;
vmm_spin_unlock(&rb->lock);
return retval;
}
bool vmm_ringbuf_dequeue(struct vmm_ringbuf *rb, void *dstkey)
{
u32 read_pos_mod;
bool isempty;
if (!rb || !dstkey) {
return FALSE;
}
vmm_spin_lock(&rb->lock);
isempty = (rb->read_pos == rb->write_pos);
if (!isempty) {
switch(rb->key_size) {
case 1:
*((u8 *)dstkey) =
*((u8 *)(rb->keys + (rb->read_pos * rb->key_size)));
break;
case 2:
*((u16 *)dstkey) =
*((u16 *)(rb->keys + (rb->read_pos * rb->key_size)));
break;
case 4:
*((u32 *)dstkey) =
*((u32 *)(rb->keys + (rb->read_pos * rb->key_size)));
break;
default:
vmm_memcpy(dstkey,
rb->keys + (rb->read_pos * rb->key_size),
rb->key_size);
break;
};
read_pos_mod = (rb->read_pos + 1);
if (rb->key_count <= read_pos_mod) {
read_pos_mod -= rb->key_count;
}
rb->read_pos = read_pos_mod;
rb->avail_count--;
}
vmm_spin_unlock(&rb->lock);
return !isempty;
}
/* Resize virtual display. */
static void pl110_resize(struct pl110_state *s, int width, int height)
{
bool do_gfx_resize = FALSE;
vmm_spin_lock(&s->lock);
if (width != s->cols || height != s->rows) {
if (__pl110_enabled(s)) {
do_gfx_resize = TRUE;
}
}
s->cols = width;
s->rows = height;
vmm_spin_unlock(&s->lock);
if (do_gfx_resize) {
vmm_vdisplay_surface_gfx_resize(s->vdis, width, height);
}
}
bool vmm_ringbuf_isfull(struct vmm_ringbuf *rb)
{
u32 write_pos_mod;
bool isfull;
if (!rb) {
return FALSE;
}
vmm_spin_lock(&rb->lock);
write_pos_mod = (rb->write_pos + 1);
if (rb->key_count <= write_pos_mod) {
write_pos_mod -= rb->key_count;
}
isfull = (rb->read_pos == write_pos_mod);
vmm_spin_unlock(&rb->lock);
return isfull;
}
bool vmm_ringbuf_getkey(struct vmm_ringbuf *rb, u32 index, void *dstkey)
{
if (!rb || !dstkey) {
return FALSE;
}
if (rb->key_count <= index) {
return FALSE;
}
vmm_spin_lock(&rb->lock);
index = (rb->read_pos + index);
if (rb->key_count <= index) {
index -= rb->key_count;
}
switch(rb->key_size) {
case 1:
*((u8 *)dstkey) =
*((u8 *)(rb->keys + (index * rb->key_size)));
break;
case 2:
*((u16 *)dstkey) =
*((u16 *)(rb->keys + (index * rb->key_size)));
break;
case 4:
*((u32 *)dstkey) =
*((u32 *)(rb->keys + (index * rb->key_size)));
break;
default:
vmm_memcpy(dstkey,
rb->keys + (index * rb->key_size),
rb->key_size);
break;
};
vmm_spin_unlock(&rb->lock);
return TRUE;
}
static void pl110_display_update(struct vmm_vdisplay *vdis,
struct vmm_surface *sf)
{
drawfn fn;
drawfn *fntable;
u32 *palette;
physical_addr_t gphys;
int cols, rows, first, last;
int dest_width, src_width, bpp_offset;
struct pl110_state *s = vmm_vdisplay_priv(vdis);
if (!pl110_enabled(s)) {
return;
}
switch (vmm_surface_bits_per_pixel(sf)) {
case 0:
return;
case 8:
fntable = pl110_draw_fn_8;
dest_width = 1;
palette = s->palette8;
break;
case 15:
fntable = pl110_draw_fn_15;
dest_width = 2;
palette = s->palette15;
break;
case 16:
fntable = pl110_draw_fn_16;
dest_width = 2;
palette = s->palette16;
break;
case 24:
fntable = pl110_draw_fn_24;
dest_width = 3;
palette = s->palette32;
break;
case 32:
fntable = pl110_draw_fn_32;
dest_width = 4;
palette = s->palette32;
break;
default:
vmm_printf("%s: Bad color depth\n", __func__);
return;
};
vmm_spin_lock(&s->lock);
if (s->cr & PL110_CR_BGR) {
bpp_offset = 0;
} else {
bpp_offset = 24;
}
if ((s->version != PL111) && (s->bpp == BPP_16)) {
/* The PL110's native 16 bit mode is 5551; however
* most boards with a PL110 implement an external
* mux which allows bits to be reshuffled to give
* 565 format. The mux is typically controlled by
* an external system register.
* This is controlled by a GPIO input pin
* so boards can wire it up to their register.
*
* The PL111 straightforwardly implements both
* 5551 and 565 under control of the bpp field
* in the LCDControl register.
*/
switch (s->mux_ctrl) {
case 3: /* 565 BGR */
bpp_offset = (BPP_16_565 - BPP_16);
break;
case 1: /* 5551 */
break;
case 0: /* 888; also if we have loaded vmstate from an old version */
case 2: /* 565 RGB */
default:
/* treat as 565 but honour BGR bit */
bpp_offset += (BPP_16_565 - BPP_16);
break;
};
}
if (s->cr & PL110_CR_BEBO) {
fn = fntable[s->bpp + 8 + bpp_offset];
} else if (s->cr & PL110_CR_BEPO) {
fn = fntable[s->bpp + 16 + bpp_offset];
} else {
fn = fntable[s->bpp + bpp_offset];
}
src_width = s->cols;
switch (s->bpp) {
case BPP_1:
src_width >>= 3;
break;
case BPP_2:
src_width >>= 2;
break;
case BPP_4:
src_width >>= 1;
break;
case BPP_8:
break;
case BPP_16:
case BPP_16_565:
case BPP_12:
src_width <<= 1;
break;
case BPP_32:
src_width <<= 2;
break;
};
dest_width *= s->cols;
gphys = s->upbase;
cols = s->cols;
rows = s->rows;
vmm_spin_unlock(&s->lock);
first = 0;
vmm_surface_update(sf, s->guest, gphys, cols, rows,
src_width, dest_width, 0, fn, palette,
&first, &last);
if (first >= 0) {
vmm_vdisplay_surface_gfx_update(vdis, 0, first, cols,
last - first + 1);
}
}