linux-kernel - [PATCH 3.16 094/134] net: ethernet: ucc_geth: fix MEM_PART

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Date:   Fri, 18 Aug 2017 14:13:20 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Li Yang" <pku.leo@...il.com>,
        "Scott Wood" <oss@...error.net>,
        "Christophe Leroy" <christophe.leroy@....fr>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 3.16 094/134] net: ethernet: ucc_geth: fix MEM_PART_MURAM mode

3.16.47-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Christophe Leroy <christophe.leroy@....fr>

commit 8b8642af15ed14b9a7a34d3401afbcc274533e13 upstream.

Since commit 5093bb965a163 ("powerpc/QE: switch to the cpm_muram
implementation"), muram area is not part of immrbar mapping anymore
so immrbar_virt_to_phys() is not usable anymore.

Fixes: 5093bb965a163 ("powerpc/QE: switch to the cpm_muram implementation")
Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
Acked-by: David S. Miller <davem@...emloft.net>
Acked-by: Li Yang <pku.leo@...il.com>
Signed-off-by: Scott Wood <oss@...error.net>
[bwh: Backported to 3.16: adjust filename]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/powerpc/include/asm/qe.h             | 1 +
 drivers/net/ethernet/freescale/ucc_geth.c | 8 +++-----
 2 files changed, 4 insertions(+), 5 deletions(-)

--- a/arch/powerpc/include/asm/qe.h
+++ b/arch/powerpc/include/asm/qe.h
@@ -193,6 +193,7 @@ static inline int qe_alive_during_sleep(
 #define qe_muram_free cpm_muram_free
 #define qe_muram_addr cpm_muram_addr
 #define qe_muram_offset cpm_muram_offset
+#define qe_muram_dma cpm_muram_dma
 
 /* Structure that defines QE firmware binary files.
  *
--- a/drivers/net/ethernet/freescale/ucc_geth.c
+++ b/drivers/net/ethernet/freescale/ucc_geth.c
@@ -2590,11 +2590,10 @@ static int ucc_geth_startup(struct ucc_g
 		} else if (ugeth->ug_info->uf_info.bd_mem_part ==
 			   MEM_PART_MURAM) {
 			out_be32(&ugeth->p_send_q_mem_reg->sqqd[i].bd_ring_base,
-				 (u32) immrbar_virt_to_phys(ugeth->
-							    p_tx_bd_ring[i]));
+				 (u32)qe_muram_dma(ugeth->p_tx_bd_ring[i]));
 			out_be32(&ugeth->p_send_q_mem_reg->sqqd[i].
 				 last_bd_completed_address,
-				 (u32) immrbar_virt_to_phys(endOfRing));
+				 (u32)qe_muram_dma(endOfRing));
 		}
 	}
 
@@ -2840,8 +2839,7 @@ static int ucc_geth_startup(struct ucc_g
 		} else if (ugeth->ug_info->uf_info.bd_mem_part ==
 			   MEM_PART_MURAM) {
 			out_be32(&ugeth->p_rx_bd_qs_tbl[i].externalbdbaseptr,
-				 (u32) immrbar_virt_to_phys(ugeth->
-							    p_rx_bd_ring[i]));
+				 (u32)qe_muram_dma(ugeth->p_rx_bd_ring[i]));
 		}
 		/* rest of fields handled by QE */
 	}