This is a note to let you know that I've just added the patch titled

net: ethernet: ucc_geth: fix MEM_PART_MURAM mode

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: net-ethernet-ucc_geth-fix-mem_part_muram-mode.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Thu Mar 22 14:40:23 CET 2018

From: Christophe Leroy christophe.leroy@c-s.fr Date: Tue, 7 Feb 2017 10:05:09 +0100 Subject: net: ethernet: ucc_geth: fix MEM_PART_MURAM mode

From: Christophe Leroy christophe.leroy@c-s.fr

[ Upstream commit 8b8642af15ed14b9a7a34d3401afbcc274533e13 ]

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@c-s.fr Acked-by: David S. Miller davem@davemloft.net Acked-by: Li Yang pku.leo@gmail.com Signed-off-by: Scott Wood oss@buserror.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/freescale/ucc_geth.c | 8 +++----- include/soc/fsl/qe/qe.h | 1 + 2 files changed, 4 insertions(+), 5 deletions(-)

--- a/drivers/net/ethernet/freescale/ucc_geth.c +++ b/drivers/net/ethernet/freescale/ucc_geth.c @@ -2594,11 +2594,10 @@ 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)); } }

@@ -2844,8 +2843,7 @@ 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 */ } --- a/include/soc/fsl/qe/qe.h +++ b/include/soc/fsl/qe/qe.h @@ -243,6 +243,7 @@ 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

#define qe_setbits32(_addr, _v) iowrite32be(ioread32be(_addr) | (_v), (_addr)) #define qe_clrbits32(_addr, _v) iowrite32be(ioread32be(_addr) & ~(_v), (_addr))

Patches currently in stable-queue which might be from christophe.leroy@c-s.fr are

queue-4.9/net-ethernet-ucc_geth-fix-mem_part_muram-mode.patch