[PATCH 16/20] ethernet: ucc_geth: remove bd_mem_part and all associated code
From: Rasmus Villemoes
Date: Sat Dec 05 2020 - 14:21:59 EST
The bd_mem_part member of ucc_geth_info always has the value
MEM_PART_SYSTEM, and AFAICT, there has never been any code setting it
to any other value. Moreover, muram is a somewhat precious resource,
so there's no point using that when normal memory serves just as well.
Apart from removing a lot of dead code, this is also motivated by
wanting to clean up the "store result from kmalloc() in a u32" mess.
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@xxxxxxxxx>
---
drivers/net/ethernet/freescale/ucc_geth.c | 106 ++++++----------------
include/soc/fsl/qe/qe.h | 6 --
include/soc/fsl/qe/ucc_fast.h | 1 -
3 files changed, 29 insertions(+), 84 deletions(-)
diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c
index ccde42f547b8..c9f619908561 100644
--- a/drivers/net/ethernet/freescale/ucc_geth.c
+++ b/drivers/net/ethernet/freescale/ucc_geth.c
@@ -72,7 +72,6 @@ MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 0xffff=all)");
static const struct ucc_geth_info ugeth_primary_info = {
.uf_info = {
- .bd_mem_part = MEM_PART_SYSTEM,
.rtsm = UCC_FAST_SEND_IDLES_BETWEEN_FRAMES,
.max_rx_buf_length = 1536,
/* adjusted at startup if max-speed 1000 */
@@ -1854,12 +1853,7 @@ static void ucc_geth_free_rx(struct ucc_geth_private *ugeth)
kfree(ugeth->rx_skbuff[i]);
- if (ugeth->ug_info->uf_info.bd_mem_part ==
- MEM_PART_SYSTEM)
- kfree((void *)ugeth->rx_bd_ring_offset[i]);
- else if (ugeth->ug_info->uf_info.bd_mem_part ==
- MEM_PART_MURAM)
- qe_muram_free(ugeth->rx_bd_ring_offset[i]);
+ kfree((void *)ugeth->rx_bd_ring_offset[i]);
ugeth->p_rx_bd_ring[i] = NULL;
}
}
@@ -1897,12 +1891,7 @@ static void ucc_geth_free_tx(struct ucc_geth_private *ugeth)
kfree(ugeth->tx_skbuff[i]);
if (ugeth->p_tx_bd_ring[i]) {
- if (ugeth->ug_info->uf_info.bd_mem_part ==
- MEM_PART_SYSTEM)
- kfree((void *)ugeth->tx_bd_ring_offset[i]);
- else if (ugeth->ug_info->uf_info.bd_mem_part ==
- MEM_PART_MURAM)
- qe_muram_free(ugeth->tx_bd_ring_offset[i]);
+ kfree((void *)ugeth->tx_bd_ring_offset[i]);
ugeth->p_tx_bd_ring[i] = NULL;
}
}
@@ -2060,13 +2049,6 @@ static int ucc_struct_init(struct ucc_geth_private *ugeth)
ug_info = ugeth->ug_info;
uf_info = &ug_info->uf_info;
- if (!((uf_info->bd_mem_part == MEM_PART_SYSTEM) ||
- (uf_info->bd_mem_part == MEM_PART_MURAM))) {
- if (netif_msg_probe(ugeth))
- pr_err("Bad memory partition value\n");
- return -EINVAL;
- }
-
/* Rx BD lengths */
for (i = 0; i < ug_info->numQueuesRx; i++) {
if ((ug_info->bdRingLenRx[i] < UCC_GETH_RX_BD_RING_SIZE_MIN) ||
@@ -2186,6 +2168,8 @@ static int ucc_geth_alloc_tx(struct ucc_geth_private *ugeth)
/* Allocate Tx bds */
for (j = 0; j < ug_info->numQueuesTx; j++) {
+ u32 align = UCC_GETH_TX_BD_RING_ALIGNMENT;
+
/* Allocate in multiple of
UCC_GETH_TX_BD_RING_SIZE_MEMORY_ALIGNMENT,
according to spec */
@@ -2195,24 +2179,15 @@ static int ucc_geth_alloc_tx(struct ucc_geth_private *ugeth)
if ((ug_info->bdRingLenTx[j] * sizeof(struct qe_bd)) %
UCC_GETH_TX_BD_RING_SIZE_MEMORY_ALIGNMENT)
length += UCC_GETH_TX_BD_RING_SIZE_MEMORY_ALIGNMENT;
- if (uf_info->bd_mem_part == MEM_PART_SYSTEM) {
- u32 align = UCC_GETH_TX_BD_RING_ALIGNMENT;
- ugeth->tx_bd_ring_offset[j] =
- (u32) kmalloc((u32) (length + align), GFP_KERNEL);
-
- if (ugeth->tx_bd_ring_offset[j] != 0)
- ugeth->p_tx_bd_ring[j] =
- (u8 __iomem *)((ugeth->tx_bd_ring_offset[j] +
- align) & ~(align - 1));
- } else if (uf_info->bd_mem_part == MEM_PART_MURAM) {
- ugeth->tx_bd_ring_offset[j] =
- qe_muram_alloc(length,
- UCC_GETH_TX_BD_RING_ALIGNMENT);
- if (!IS_ERR_VALUE(ugeth->tx_bd_ring_offset[j]))
- ugeth->p_tx_bd_ring[j] =
- (u8 __iomem *) qe_muram_addr(ugeth->
- tx_bd_ring_offset[j]);
- }
+
+ ugeth->tx_bd_ring_offset[j] =
+ (u32) kmalloc((u32) (length + align), GFP_KERNEL);
+
+ if (ugeth->tx_bd_ring_offset[j] != 0)
+ ugeth->p_tx_bd_ring[j] =
+ (u8 __iomem *)((ugeth->tx_bd_ring_offset[j] +
+ align) & ~(align - 1));
+
if (!ugeth->p_tx_bd_ring[j]) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate memory for Tx bd rings\n");
@@ -2270,24 +2245,16 @@ static int ucc_geth_alloc_rx(struct ucc_geth_private *ugeth)
/* Allocate Rx bds */
for (j = 0; j < ug_info->numQueuesRx; j++) {
+ u32 align = UCC_GETH_RX_BD_RING_ALIGNMENT;
+
length = ug_info->bdRingLenRx[j] * sizeof(struct qe_bd);
- if (uf_info->bd_mem_part == MEM_PART_SYSTEM) {
- u32 align = UCC_GETH_RX_BD_RING_ALIGNMENT;
- ugeth->rx_bd_ring_offset[j] =
- (u32) kmalloc((u32) (length + align), GFP_KERNEL);
- if (ugeth->rx_bd_ring_offset[j] != 0)
- ugeth->p_rx_bd_ring[j] =
- (u8 __iomem *)((ugeth->rx_bd_ring_offset[j] +
- align) & ~(align - 1));
- } else if (uf_info->bd_mem_part == MEM_PART_MURAM) {
- ugeth->rx_bd_ring_offset[j] =
- qe_muram_alloc(length,
- UCC_GETH_RX_BD_RING_ALIGNMENT);
- if (!IS_ERR_VALUE(ugeth->rx_bd_ring_offset[j]))
- ugeth->p_rx_bd_ring[j] =
- (u8 __iomem *) qe_muram_addr(ugeth->
- rx_bd_ring_offset[j]);
- }
+ ugeth->rx_bd_ring_offset[j] =
+ (u32) kmalloc((u32) (length + align), GFP_KERNEL);
+ if (ugeth->rx_bd_ring_offset[j] != 0)
+ ugeth->p_rx_bd_ring[j] =
+ (u8 __iomem *)((ugeth->rx_bd_ring_offset[j] +
+ align) & ~(align - 1));
+
if (!ugeth->p_rx_bd_ring[j]) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate memory for Rx bd rings\n");
@@ -2552,20 +2519,11 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
endOfRing =
ugeth->p_tx_bd_ring[i] + (ug_info->bdRingLenTx[i] -
1) * sizeof(struct qe_bd);
- if (ugeth->ug_info->uf_info.bd_mem_part == MEM_PART_SYSTEM) {
- out_be32(&ugeth->p_send_q_mem_reg->sqqd[i].bd_ring_base,
- (u32) virt_to_phys(ugeth->p_tx_bd_ring[i]));
- out_be32(&ugeth->p_send_q_mem_reg->sqqd[i].
- last_bd_completed_address,
- (u32) virt_to_phys(endOfRing));
- } 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)qe_muram_dma(ugeth->p_tx_bd_ring[i]));
- out_be32(&ugeth->p_send_q_mem_reg->sqqd[i].
- last_bd_completed_address,
- (u32)qe_muram_dma(endOfRing));
- }
+ out_be32(&ugeth->p_send_q_mem_reg->sqqd[i].bd_ring_base,
+ (u32) virt_to_phys(ugeth->p_tx_bd_ring[i]));
+ out_be32(&ugeth->p_send_q_mem_reg->sqqd[i].
+ last_bd_completed_address,
+ (u32) virt_to_phys(endOfRing));
}
/* schedulerbasepointer */
@@ -2784,14 +2742,8 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
/* Setup the table */
/* Assume BD rings are already established */
for (i = 0; i < ug_info->numQueuesRx; i++) {
- if (ugeth->ug_info->uf_info.bd_mem_part == MEM_PART_SYSTEM) {
- out_be32(&ugeth->p_rx_bd_qs_tbl[i].externalbdbaseptr,
- (u32) virt_to_phys(ugeth->p_rx_bd_ring[i]));
- } else if (ugeth->ug_info->uf_info.bd_mem_part ==
- MEM_PART_MURAM) {
- out_be32(&ugeth->p_rx_bd_qs_tbl[i].externalbdbaseptr,
- (u32)qe_muram_dma(ugeth->p_rx_bd_ring[i]));
- }
+ out_be32(&ugeth->p_rx_bd_qs_tbl[i].externalbdbaseptr,
+ (u32) virt_to_phys(ugeth->p_rx_bd_ring[i]));
/* rest of fields handled by QE */
}
diff --git a/include/soc/fsl/qe/qe.h b/include/soc/fsl/qe/qe.h
index 66f1afc393d1..4925a1b59dc9 100644
--- a/include/soc/fsl/qe/qe.h
+++ b/include/soc/fsl/qe/qe.h
@@ -27,12 +27,6 @@
#define QE_NUM_OF_BRGS 16
#define QE_NUM_OF_PORTS 1024
-/* Memory partitions
-*/
-#define MEM_PART_SYSTEM 0
-#define MEM_PART_SECONDARY 1
-#define MEM_PART_MURAM 2
-
/* Clocks and BRGs */
enum qe_clock {
QE_CLK_NONE = 0,
diff --git a/include/soc/fsl/qe/ucc_fast.h b/include/soc/fsl/qe/ucc_fast.h
index dc4e79468094..9696a5b9b5d1 100644
--- a/include/soc/fsl/qe/ucc_fast.h
+++ b/include/soc/fsl/qe/ucc_fast.h
@@ -146,7 +146,6 @@ struct ucc_fast_info {
resource_size_t regs;
int irq;
u32 uccm_mask;
- int bd_mem_part;
int brkpt_support;
int grant_support;
int tsa;
--
2.23.0