The patch titled
fsldma: split the MPC83xx event from MPC85xx and refine irq codes.
has been removed from the -mm tree. Its filename was
fsldma-split-the-mpc83xx-event-from-mpc85xx-and-refine-irq-codes.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: fsldma: split the MPC83xx event from MPC85xx and refine irq codes.
From: Zhang Wei <wei.zhang@xxxxxxxxxxxxx>
Split MPC83xx EOCDI event from MPC85xx EOLNI event, which is
also need to update cookie and start the next transfer.
The DMA channel irq handler function code is refined.
The patch is tested on MPC8377MDS board.
Signed-off-by: Zhang Wei <wei.zhang@xxxxxxxxxxxxx>
Cc: "Nelson, Shannon" <shannon.nelson@xxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/dma/fsldma.c | 26 +++++++++++++++++++++-----
1 file changed, 21 insertions(+), 5 deletions(-)
diff -puN drivers/dma/fsldma.c~fsldma-split-the-mpc83xx-event-from-mpc85xx-and-refine-irq-codes drivers/dma/fsldma.c
--- a/drivers/dma/fsldma.c~fsldma-split-the-mpc83xx-event-from-mpc85xx-and-refine-irq-codes
+++ a/drivers/dma/fsldma.c
@@ -689,6 +689,8 @@ static irqreturn_t fsl_dma_chan_do_inter
{
struct fsl_dma_chan *fsl_chan = (struct fsl_dma_chan *)data;
u32 stat;
+ int update_cookie = 0;
+ int xfer_ld_q = 0;
stat = get_sr(fsl_chan);
dev_dbg(fsl_chan->dev, "event: channel %d, stat = 0x%x\n",
@@ -713,8 +715,8 @@ static irqreturn_t fsl_dma_chan_do_inter
* Now, update the completed cookie, and continue the
* next uncompleted transfer.
*/
- fsl_dma_update_completed_cookie(fsl_chan);
- fsl_chan_xfer_ld_queue(fsl_chan);
+ update_cookie = 1;
+ xfer_ld_q = 1;
}
stat &= ~FSL_DMA_SR_PE;
}
@@ -727,19 +729,33 @@ static irqreturn_t fsl_dma_chan_do_inter
dev_dbg(fsl_chan->dev, "event: clndar %p, nlndar %p\n",
(void *)get_cdar(fsl_chan), (void *)get_ndar(fsl_chan));
stat &= ~FSL_DMA_SR_EOSI;
- fsl_dma_update_completed_cookie(fsl_chan);
+ update_cookie = 1;
+ }
+
+ /* For MPC8349, EOCDI event need to update cookie
+ * and start the next transfer if it exist.
+ */
+ if (stat & FSL_DMA_SR_EOCDI) {
+ dev_dbg(fsl_chan->dev, "event: End-of-Chain link INT\n");
+ stat &= ~FSL_DMA_SR_EOCDI;
+ update_cookie = 1;
+ xfer_ld_q = 1;
}
/* If it current transfer is the end-of-transfer,
* we should clear the Channel Start bit for
* prepare next transfer.
*/
- if (stat & (FSL_DMA_SR_EOLNI | FSL_DMA_SR_EOCDI)) {
+ if (stat & FSL_DMA_SR_EOLNI) {
dev_dbg(fsl_chan->dev, "event: End-of-link INT\n");
stat &= ~FSL_DMA_SR_EOLNI;
- fsl_chan_xfer_ld_queue(fsl_chan);
+ xfer_ld_q = 1;
}
+ if (update_cookie)
+ fsl_dma_update_completed_cookie(fsl_chan);
+ if (xfer_ld_q)
+ fsl_chan_xfer_ld_queue(fsl_chan);
if (stat)
dev_dbg(fsl_chan->dev, "event: unhandled sr 0x%02x\n",
stat);
_
Patches currently in -mm which might be from wei.zhang@xxxxxxxxxxxxx are
rapidio-change-rio-function-mpc85xx_-to-fsl_.patch
rapidio-add-rapidio-option-to-kernel-configuration.patch
rapidio-move-include-asm-ppc-rioh-to-include-asm-powerpc-rioh.patch
rapidio-add-rapidio-multi-mport-support.patch
rapidio-add-of-tree-support-to-rapidio-controller-driver.patch
rapidio-change-the-kernel-configurated-rapidio-system-size-to-auto-probing.patch
rapidio-add-rapidio-node-into-mpc8641hpcn-dts-file.patch
rapidio-add-rapidio-node-probing-into-mpc86xx_hpcn-board-id-table.patch
rapidio-add-serial-rapidio-controller-support-which-includes-mpc8548-mpc8641.patch
rapidio-add-rapidio-connection-info-print-out-and-re-training-for-break-connection.patch
rapidio-add-memory-mapping-driver-to-rapidio.patch
rapidio-add-rapidio-space-allocation-bitmap-arithmetic.patch
rapidio-add-fsl-rapidio-controller-memory-ops-functions.patch
rapidio-add-the-rapidio-master-port-maintance-and-doorbell-window-to-space-resources.patch
rapidio-add-rapidio-proc-fs-for-memory-mapping-debugging.patch
rapidio-change-rapidio-doorbell-source-and-target-id-field-to-16-bit.patch
rapidio-add-the-memory-mapping-support-in-rionet-driver.patch
rapidio-fix-docbook-references.patch
git-async-tx.patch
fsldma-the-mpc8377mds-board-device-tree-node-for-fsldma-driver.patch
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