rk3568 rt uboot init

hc

2023-11-06 9df731a176aab8e03b984b681b1bea01ccff6644

 u-boot/drivers/nvme/nvme.c
..
..
@@ -6,6 +6,7 @@
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  */
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 #include <common.h>
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+#include <bouncebuf.h>
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 #include <dm.h>
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 #include <errno.h>
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 #include <memalign.h>
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@@ -740,13 +741,25 @@
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 	u64 prp2;
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 	u64 total_len = blkcnt << desc->log2blksz;
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 	u64 temp_len = total_len;
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+	uintptr_t temp_buffer;
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 	u64 slba = blknr;
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 	u16 lbas = 1 << (dev->max_transfer_shift - ns->lba_shift);
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 	u64 total_lbas = blkcnt;
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-	flush_dcache_range((unsigned long)buffer,
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-			   (unsigned long)buffer + total_len);
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+	struct bounce_buffer bb;
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+	unsigned int bb_flags;
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+	int ret;
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+
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+	if (read)
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+		bb_flags = GEN_BB_WRITE;
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+	else
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+		bb_flags = GEN_BB_READ;
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+
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+	ret = bounce_buffer_start(&bb, buffer, total_len, bb_flags);
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+	if (ret)
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+		return -ENOMEM;
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+	temp_buffer = (unsigned long)bb.bounce_buffer;
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 	c.rw.opcode = read ? nvme_cmd_read : nvme_cmd_write;
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 	c.rw.flags = 0;
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@@ -771,24 +784,22 @@
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 		}
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 		if (nvme_setup_prps(dev, &prp2,
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-				    lbas << ns->lba_shift, (ulong)buffer))
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+				    lbas << ns->lba_shift, temp_buffer))
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 			return -EIO;
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 		c.rw.slba = cpu_to_le64(slba);
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 		slba += lbas;
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 		c.rw.length = cpu_to_le16(lbas - 1);
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-		c.rw.prp1 = cpu_to_le64((ulong)buffer);
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+		c.rw.prp1 = cpu_to_le64(temp_buffer);
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 		c.rw.prp2 = cpu_to_le64(prp2);
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 		status = nvme_submit_sync_cmd(dev->queues[NVME_IO_Q],
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 				&c, NULL, IO_TIMEOUT);
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 		if (status)
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 			break;
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 		temp_len -= (u32)lbas << ns->lba_shift;
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-		buffer += lbas << ns->lba_shift;
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+		temp_buffer += lbas << ns->lba_shift;
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 	}
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-	if (read)
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-		invalidate_dcache_range((unsigned long)buffer,
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-					(unsigned long)buffer + total_len);
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+	bounce_buffer_stop(&bb);
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 	return (total_len - temp_len) >> desc->log2blksz;
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 }