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imx233: implement dcp blitting, simplify code and make it work even in context interrupt by busy waiting

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Change-Id: Ife949e13e3e04a56a2b5bc554eb46c726e719712
This commit is contained in:
Amaury Pouly 2012-01-27 19:47:47 +01:00
parent 900b494a27
commit bf47e577aa
2 changed files with 80 additions and 21 deletions
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89
firmware/target/arm/imx233/dcp-imx233.c
View file

@ -111,44 +111,98 @@ static enum imx233_dcp_error_t get_error_status(int ch)
}
}
enum imx233_dcp_error_t imx233_dcp_memcpy_ex(int ch, void *src, void *dst, size_t len)
static enum imx233_dcp_error_t imx233_dcp_job(int ch)
{
/* if IRQs are not enabled, don't enable channel interrupt and do some polling */
bool irq_enabled = irq_enabled();
/* enable channel, clear interrupt, enable interrupt */
imx233_enable_interrupt(INT_SRC_DCP, true);
if(irq_enabled)
__REG_SET(HW_DCP_CTRL) = HW_DCP_CTRL__CHANNEL_INTERRUPT_ENABLE(ch);
__REG_CLR(HW_DCP_STAT) = HW_DCP_STAT__IRQ(ch);
__REG_SET(HW_DCP_CHANNELCTRL) = HW_DCP_CHANNELCTRL__ENABLE_CHANNEL(ch);
/* prepare packet */
channel_packet[ch].next = 0;
channel_packet[ch].ctrl0 = HW_DCP_CTRL0__INTERRUPT_ENABLE |
HW_DCP_CTRL0__ENABLE_MEMCOPY | HW_DCP_CTRL0__DECR_SEMAPHORE;
channel_packet[ch].ctrl1 = 0;
channel_packet[ch].src = (uint32_t)PHYSICAL_ADDR(src);
channel_packet[ch].dst = (uint32_t)PHYSICAL_ADDR(dst);
channel_packet[ch].size = len;
channel_packet[ch].payload = 0;
channel_packet[ch].status = 0;
/* write-back src, discard dst, write-back packet */
commit_discard_dcache_range(src, len);
discard_dcache_range(dst, len);
/* write back packet */
commit_discard_dcache_range(&channel_packet[ch], sizeof(struct imx233_dcp_packet_t));
/* write 1 to semaphore to run job */
HW_DCP_CHxCMDPTR(ch) = (uint32_t)PHYSICAL_ADDR(&channel_packet[ch]);
HW_DCP_CHxSEMA(ch) = 1;
/* wait completion */
if(irq_enabled)
semaphore_wait(&channel_sema[ch], TIMEOUT_BLOCK);
else
while(__XTRACT_EX(HW_DCP_CHxSEMA(ch), HW_DCP_CHxSEMA__VALUE))
udelay(10);
/* disable channel and interrupt */
__REG_CLR(HW_DCP_CTRL) = HW_DCP_CTRL__CHANNEL_INTERRUPT_ENABLE(ch);
__REG_CLR(HW_DCP_CHANNELCTRL) = HW_DCP_CHANNELCTRL__ENABLE_CHANNEL(ch);
/* read status */
return get_error_status(ch);
}
enum imx233_dcp_error_t imx233_dcp_memcpy(void *src, void *dst, size_t len, int tmo)
enum imx233_dcp_error_t imx233_dcp_memcpy_ex(int ch, bool fill, const void *src, void *dst, size_t len)
{
/* prepare packet */
channel_packet[ch].next = 0;
channel_packet[ch].ctrl0 = HW_DCP_CTRL0__INTERRUPT_ENABLE |
HW_DCP_CTRL0__ENABLE_MEMCOPY | HW_DCP_CTRL0__DECR_SEMAPHORE |
(fill ? HW_DCP_CTRL0__CONSTANT_FILL : 0);
channel_packet[ch].ctrl1 = 0;
channel_packet[ch].src = (uint32_t)(fill ? src : PHYSICAL_ADDR(src));
channel_packet[ch].dst = (uint32_t)PHYSICAL_ADDR(dst);
channel_packet[ch].size = len;
channel_packet[ch].payload = 0;
channel_packet[ch].status = 0;
/* write-back src if not filling, discard dst */
if(!fill)
commit_discard_dcache_range(src, len);
discard_dcache_range(dst, len);
/* do the job */
return imx233_dcp_job(ch);
}
enum imx233_dcp_error_t imx233_dcp_memcpy(bool fill, const void *src, void *dst, size_t len, int tmo)
{
int chan = imx233_dcp_acquire_channel(tmo);
if(chan == OBJ_WAIT_TIMEDOUT)
return DCP_TIMEOUT;
enum imx233_dcp_error_t err = imx233_dcp_memcpy_ex(chan, src, dst, len);
enum imx233_dcp_error_t err = imx233_dcp_memcpy_ex(chan, fill, src, dst, len);
imx233_dcp_release_channel(chan);
return err;
}
enum imx233_dcp_error_t imx233_dcp_blit_ex(int ch, bool fill, const void *src, size_t w, size_t h, void *dst, size_t out_w)
{
/* prepare packet */
channel_packet[ch].next = 0;
channel_packet[ch].ctrl0 = HW_DCP_CTRL0__INTERRUPT_ENABLE |
HW_DCP_CTRL0__ENABLE_MEMCOPY | HW_DCP_CTRL0__DECR_SEMAPHORE |
HW_DCP_CTRL0__ENABLE_BLIT |
(fill ? HW_DCP_CTRL0__CONSTANT_FILL : 0);
channel_packet[ch].ctrl1 = out_w;
channel_packet[ch].src = (uint32_t)(fill ? src : PHYSICAL_ADDR(src));
channel_packet[ch].dst = (uint32_t)PHYSICAL_ADDR(dst);
channel_packet[ch].size = w | h << HW_DCP_SIZE__NUMBER_LINES_BP;
channel_packet[ch].payload = 0;
channel_packet[ch].status = 0;
/* we have a problem here to discard the output buffer since it's not contiguous
* so only commit the source */
if(!fill)
commit_discard_dcache_range(src, w * h);
/* do the job */
return imx233_dcp_job(ch);
}
enum imx233_dcp_error_t imx233_dcp_blit(bool fill, const void *src, size_t w, size_t h, void *dst, size_t out_w, int tmo)
{
int chan = imx233_dcp_acquire_channel(tmo);
if(chan == OBJ_WAIT_TIMEDOUT)
return DCP_TIMEOUT;
enum imx233_dcp_error_t err = imx233_dcp_blit_ex(chan, fill, src, w, h, dst, out_w);
imx233_dcp_release_channel(chan);
return err;
}
@ -185,6 +239,7 @@ struct imx233_dcp_info_t imx233_dcp_get_info(unsigned flags)
info.channel[i].enable = HW_DCP_CHANNELCTRL & HW_DCP_CHANNELCTRL__ENABLE_CHANNEL(i);
info.channel[i].sema = __XTRACT_EX(HW_DCP_CHxSEMA(i), HW_DCP_CHxSEMA__VALUE);
info.channel[i].cmdptr = HW_DCP_CHxCMDPTR(i);
info.channel[i].acquired = arbiter_acquired(&channel_arbiter, i);
}
}
if(flags & DCP_INFO_CSC)

8
firmware/target/arm/imx233/dcp-imx233.h
View file

@ -295,6 +295,7 @@ struct imx233_dcp_channel_info_t
bool ready;
int sema;
uint32_t cmdptr;
bool acquired;
};
struct imx233_dcp_csc_info_t
@ -355,8 +356,11 @@ void imx233_dcp_release_channel(int chan);
// doesn't check that channel is in use!
void imx233_dcp_reserve_channel(int channel);
enum imx233_dcp_error_t imx233_dcp_memcpy_ex(int channel, void *src, void *dst, size_t len);
enum imx233_dcp_error_t imx233_dcp_memcpy(void *src, void *dst, size_t len, int tmo);
enum imx233_dcp_error_t imx233_dcp_memcpy_ex(int channel, bool fill, const void *src, void *dst, size_t len);
enum imx233_dcp_error_t imx233_dcp_memcpy(bool fill, const void *src, void *dst, size_t len, int tmo);
enum imx233_dcp_error_t imx233_dcp_blit_ex(int channel, bool fill, const void *src, size_t w, size_t h, void *dst, size_t out_w);
enum imx233_dcp_error_t imx233_dcp_blit(bool fill, const void *src, size_t w, size_t h, void *dst, size_t out_w, int tmo);
struct imx233_dcp_info_t imx233_dcp_get_info(unsigned flags);