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wifipineapple-openwrt/target/linux/generic/patches-3.12/774-bgmac-add-some-workarou...

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From ec12b94d22fa8715561bdffe6da0781dac08423e Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sun, 10 Nov 2013 21:23:57 +0100
Subject: [PATCH] bgmac: add some workaround for rev 4
---
drivers/net/ethernet/broadcom/bgmac.c | 8 ++++----
drivers/net/ethernet/broadcom/bgmac.h | 4 +++-
2 files changed, 7 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -97,6 +97,16 @@ static void bgmac_dma_tx_enable(struct b
u32 ctl;
ctl = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL);
+ if (bgmac->core->id.rev == 4) {
+ ctl &= ~BGMAC_DMA_TX_BL_MASK;
+ ctl |= BGMAC_DMA_TX_BL_128 << BGMAC_DMA_TX_BL_SHIFT;
+ ctl &= ~BGMAC_DMA_TX_MR_MASK;
+ ctl |= BGMAC_DMA_TX_MR_2 << BGMAC_DMA_TX_MR_SHIFT;
+ ctl &= ~BGMAC_DMA_TX_PC_MASK;
+ ctl |= BGMAC_DMA_TX_PC_16 << BGMAC_DMA_TX_PC_SHIFT;
+ ctl &= ~BGMAC_DMA_TX_PT_MASK;
+ ctl |= BGMAC_DMA_TX_PT_8 << BGMAC_DMA_TX_PT_SHIFT;
+ }
ctl |= BGMAC_DMA_TX_ENABLE;
ctl |= BGMAC_DMA_TX_PARITY_DISABLE;
bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL, ctl);
@@ -246,6 +256,17 @@ static void bgmac_dma_rx_enable(struct b
ctl |= BGMAC_DMA_RX_PARITY_DISABLE;
ctl |= BGMAC_DMA_RX_OVERFLOW_CONT;
ctl |= BGMAC_RX_FRAME_OFFSET << BGMAC_DMA_RX_FRAME_OFFSET_SHIFT;
+
+ if (bgmac->core->id.rev == 4) {
+ ctl &= ~BGMAC_DMA_RX_BL_MASK;
+ ctl |= BGMAC_DMA_RX_BL_128 << BGMAC_DMA_RX_BL_SHIFT;
+
+ ctl &= ~BGMAC_DMA_RX_PC_MASK;
+ ctl |= BGMAC_DMA_RX_PC_8 << BGMAC_DMA_RX_PC_SHIFT;
+
+ ctl &= ~BGMAC_DMA_RX_PT_MASK;
+ ctl |= BGMAC_DMA_RX_PT_1 << BGMAC_DMA_RX_PT_SHIFT;
+ }
bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL, ctl);
}
@@ -812,13 +833,13 @@ static void bgmac_cmdcfg_maskset(struct
u32 cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG);
u32 new_val = (cmdcfg & mask) | set;
- bgmac_set(bgmac, BGMAC_CMDCFG, BGMAC_CMDCFG_SR);
+ bgmac_set(bgmac, BGMAC_CMDCFG, BGMAC_CMDCFG_SR(bgmac->core->id.rev));
udelay(2);
if (new_val != cmdcfg || force)
bgmac_write(bgmac, BGMAC_CMDCFG, new_val);
- bgmac_mask(bgmac, BGMAC_CMDCFG, ~BGMAC_CMDCFG_SR);
+ bgmac_mask(bgmac, BGMAC_CMDCFG, ~BGMAC_CMDCFG_SR(bgmac->core->id.rev));
udelay(2);
}
@@ -1029,7 +1050,7 @@ static void bgmac_chip_reset(struct bgma
BGMAC_CMDCFG_PROM |
BGMAC_CMDCFG_NLC |
BGMAC_CMDCFG_CFE |
- BGMAC_CMDCFG_SR,
+ BGMAC_CMDCFG_SR(core->id.rev),
false);
bgmac_clear_mib(bgmac);
@@ -1070,7 +1091,7 @@ static void bgmac_enable(struct bgmac *b
cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG);
bgmac_cmdcfg_maskset(bgmac, ~(BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE),
- BGMAC_CMDCFG_SR, true);
+ BGMAC_CMDCFG_SR(bgmac->core->id.rev), true);
udelay(2);
cmdcfg |= BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE;
bgmac_write(bgmac, BGMAC_CMDCFG, cmdcfg);
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -194,7 +194,9 @@
#define BGMAC_CMDCFG_TAI 0x00000200
#define BGMAC_CMDCFG_HD 0x00000400 /* Set if in half duplex mode */
#define BGMAC_CMDCFG_HD_SHIFT 10
-#define BGMAC_CMDCFG_SR 0x00000800 /* Set to reset mode */
+#define BGMAC_CMDCFG_SR_REVO 0x00000800 /* Set to reset mode, for other revs */
+#define BGMAC_CMDCFG_SR_REV4 0x00002000 /* Set to reset mode, only for core rev 4 */
+#define BGMAC_CMDCFG_SR(rev) ((rev == 4) ? BGMAC_CMDCFG_SR_REV4 : BGMAC_CMDCFG_SR_REVO)
#define BGMAC_CMDCFG_ML 0x00008000 /* Set to activate mac loopback mode */
#define BGMAC_CMDCFG_AE 0x00400000
#define BGMAC_CMDCFG_CFE 0x00800000
@@ -255,9 +257,34 @@
#define BGMAC_DMA_TX_SUSPEND 0x00000002
#define BGMAC_DMA_TX_LOOPBACK 0x00000004
#define BGMAC_DMA_TX_FLUSH 0x00000010
+#define BGMAC_DMA_TX_MR_MASK 0x000000C0 /* Multiple outstanding reads */
+#define BGMAC_DMA_TX_MR_SHIFT 6
+#define BGMAC_DMA_TX_MR_1 0
+#define BGMAC_DMA_TX_MR_2 1
#define BGMAC_DMA_TX_PARITY_DISABLE 0x00000800
#define BGMAC_DMA_TX_ADDREXT_MASK 0x00030000
#define BGMAC_DMA_TX_ADDREXT_SHIFT 16
+#define BGMAC_DMA_TX_BL_MASK 0x001C0000 /* BurstLen bits */
+#define BGMAC_DMA_TX_BL_SHIFT 18
+#define BGMAC_DMA_TX_BL_16 0
+#define BGMAC_DMA_TX_BL_32 1
+#define BGMAC_DMA_TX_BL_64 2
+#define BGMAC_DMA_TX_BL_128 3
+#define BGMAC_DMA_TX_BL_256 4
+#define BGMAC_DMA_TX_BL_512 5
+#define BGMAC_DMA_TX_BL_1024 6
+#define BGMAC_DMA_TX_PC_MASK 0x00E00000 /* Prefetch control */
+#define BGMAC_DMA_TX_PC_SHIFT 21
+#define BGMAC_DMA_TX_PC_0 0
+#define BGMAC_DMA_TX_PC_4 1
+#define BGMAC_DMA_TX_PC_8 2
+#define BGMAC_DMA_TX_PC_16 3
+#define BGMAC_DMA_TX_PT_MASK 0x03000000 /* Prefetch threshold */
+#define BGMAC_DMA_TX_PT_SHIFT 24
+#define BGMAC_DMA_TX_PT_1 0
+#define BGMAC_DMA_TX_PT_2 1
+#define BGMAC_DMA_TX_PT_4 2
+#define BGMAC_DMA_TX_PT_8 3
#define BGMAC_DMA_TX_INDEX 0x04
#define BGMAC_DMA_TX_RINGLO 0x08
#define BGMAC_DMA_TX_RINGHI 0x0C
@@ -285,8 +312,33 @@
#define BGMAC_DMA_RX_DIRECT_FIFO 0x00000100
#define BGMAC_DMA_RX_OVERFLOW_CONT 0x00000400
#define BGMAC_DMA_RX_PARITY_DISABLE 0x00000800
+#define BGMAC_DMA_RX_MR_MASK 0x000000C0 /* Multiple outstanding reads */
+#define BGMAC_DMA_RX_MR_SHIFT 6
+#define BGMAC_DMA_TX_MR_1 0
+#define BGMAC_DMA_TX_MR_2 1
#define BGMAC_DMA_RX_ADDREXT_MASK 0x00030000
#define BGMAC_DMA_RX_ADDREXT_SHIFT 16
+#define BGMAC_DMA_RX_BL_MASK 0x001C0000 /* BurstLen bits */
+#define BGMAC_DMA_RX_BL_SHIFT 18
+#define BGMAC_DMA_RX_BL_16 0
+#define BGMAC_DMA_RX_BL_32 1
+#define BGMAC_DMA_RX_BL_64 2
+#define BGMAC_DMA_RX_BL_128 3
+#define BGMAC_DMA_RX_BL_256 4
+#define BGMAC_DMA_RX_BL_512 5
+#define BGMAC_DMA_RX_BL_1024 6
+#define BGMAC_DMA_RX_PC_MASK 0x00E00000 /* Prefetch control */
+#define BGMAC_DMA_RX_PC_SHIFT 21
+#define BGMAC_DMA_RX_PC_0 0
+#define BGMAC_DMA_RX_PC_4 1
+#define BGMAC_DMA_RX_PC_8 2
+#define BGMAC_DMA_RX_PC_16 3
+#define BGMAC_DMA_RX_PT_MASK 0x03000000 /* Prefetch threshold */
+#define BGMAC_DMA_RX_PT_SHIFT 24
+#define BGMAC_DMA_RX_PT_1 0
+#define BGMAC_DMA_RX_PT_2 1
+#define BGMAC_DMA_RX_PT_4 2
+#define BGMAC_DMA_RX_PT_8 3
#define BGMAC_DMA_RX_INDEX 0x24
#define BGMAC_DMA_RX_RINGLO 0x28
#define BGMAC_DMA_RX_RINGHI 0x2C
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