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i3c: mipi-i3c-hci: Move hci_dma_xfer_done() definition

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Move hci_dma_xfer_done() earlier in the file to avoid a forward
declaration needed by a subsequent change.

No functional change.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260603090754.16252-6-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Adrian Hunter 2026-06-03 12:07:42 +03:00 committed by Alexandre Belloni
parent e251e7c9fd
commit dc8691bf4f
1 changed files with 49 additions and 49 deletions
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98
drivers/i3c/master/mipi-i3c-hci/dma.c
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@ -545,6 +545,55 @@ static int hci_dma_queue_xfer(struct i3c_hci *hci,
return 0;
}
static void hci_dma_xfer_done(struct i3c_hci *hci, struct hci_rh_data *rh)
{
u32 op1_val, op2_val, resp, *ring_resp;
unsigned int tid, done_ptr = rh->done_ptr;
unsigned int done_cnt = 0;
struct hci_xfer *xfer;
for (;;) {
op2_val = rh_reg_read(RING_OPERATION2);
if (done_ptr == FIELD_GET(RING_OP2_CR_DEQ_PTR, op2_val))
break;
ring_resp = rh->resp + rh->resp_struct_sz * done_ptr;
resp = *ring_resp;
tid = RESP_TID(resp);
dev_dbg(&hci->master.dev, "resp = 0x%08x", resp);
xfer = rh->src_xfers[done_ptr];
if (!xfer) {
dev_dbg(&hci->master.dev, "orphaned ring entry");
} else {
hci_dma_unmap_xfer(hci, xfer, 1);
rh->src_xfers[done_ptr] = NULL;
xfer->ring_entry = -1;
xfer->response = resp;
if (tid != xfer->cmd_tid) {
dev_err(&hci->master.dev,
"response tid=%d when expecting %d\n",
tid, xfer->cmd_tid);
/* TODO: do something about it? */
}
if (xfer->completion)
complete(xfer->completion);
if (RESP_STATUS(resp))
hci->enqueue_blocked = true;
}
done_ptr = (done_ptr + 1) % rh->xfer_entries;
rh->done_ptr = done_ptr;
done_cnt += 1;
}
rh->xfer_space += done_cnt;
op1_val = rh_reg_read(RING_OPERATION1);
op1_val &= ~RING_OP1_CR_SW_DEQ_PTR;
op1_val |= FIELD_PREP(RING_OP1_CR_SW_DEQ_PTR, done_ptr);
rh_reg_write(RING_OPERATION1, op1_val);
}
static void hci_dma_unblock_enqueue(struct i3c_hci *hci)
{
if (hci->enqueue_blocked) {
@ -636,55 +685,6 @@ static int hci_dma_handle_error(struct i3c_hci *hci, struct hci_xfer *xfer_list,
return hci_dma_dequeue_xfer(hci, xfer_list, n) ? -EIO : 0;
}
static void hci_dma_xfer_done(struct i3c_hci *hci, struct hci_rh_data *rh)
{
u32 op1_val, op2_val, resp, *ring_resp;
unsigned int tid, done_ptr = rh->done_ptr;
unsigned int done_cnt = 0;
struct hci_xfer *xfer;
for (;;) {
op2_val = rh_reg_read(RING_OPERATION2);
if (done_ptr == FIELD_GET(RING_OP2_CR_DEQ_PTR, op2_val))
break;
ring_resp = rh->resp + rh->resp_struct_sz * done_ptr;
resp = *ring_resp;
tid = RESP_TID(resp);
dev_dbg(&hci->master.dev, "resp = 0x%08x", resp);
xfer = rh->src_xfers[done_ptr];
if (!xfer) {
dev_dbg(&hci->master.dev, "orphaned ring entry");
} else {
hci_dma_unmap_xfer(hci, xfer, 1);
rh->src_xfers[done_ptr] = NULL;
xfer->ring_entry = -1;
xfer->response = resp;
if (tid != xfer->cmd_tid) {
dev_err(&hci->master.dev,
"response tid=%d when expecting %d\n",
tid, xfer->cmd_tid);
/* TODO: do something about it? */
}
if (xfer->completion)
complete(xfer->completion);
if (RESP_STATUS(resp))
hci->enqueue_blocked = true;
}
done_ptr = (done_ptr + 1) % rh->xfer_entries;
rh->done_ptr = done_ptr;
done_cnt += 1;
}
rh->xfer_space += done_cnt;
op1_val = rh_reg_read(RING_OPERATION1);
op1_val &= ~RING_OP1_CR_SW_DEQ_PTR;
op1_val |= FIELD_PREP(RING_OP1_CR_SW_DEQ_PTR, done_ptr);
rh_reg_write(RING_OPERATION1, op1_val);
}
static int hci_dma_request_ibi(struct i3c_hci *hci, struct i3c_dev_desc *dev,
const struct i3c_ibi_setup *req)
{