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Message-Id: <4ca0d657e2b9adc5647264d3bf3c0c7752bb098c.1689215889.git.chenfeiyang@loongson.cn>
Date: Thu, 13 Jul 2023 10:46:55 +0800
From: Feiyang Chen <chenfeiyang@...ngson.cn>
To: andrew@...n.ch,
hkallweit1@...il.com,
peppe.cavallaro@...com,
alexandre.torgue@...s.st.com,
joabreu@...opsys.com,
chenhuacai@...ngson.cn
Cc: Feiyang Chen <chenfeiyang@...ngson.cn>,
linux@...linux.org.uk,
dongbiao@...ngson.cn,
loongson-kernel@...ts.loongnix.cn,
netdev@...r.kernel.org,
loongarch@...ts.linux.dev,
chris.chenfeiyang@...il.com
Subject: [RFC PATCH 03/10] net: stmmac: dwmac1000: Allow platforms to choose some register offsets
Some platforms have dwmac1000 implementations that have a different
address space layout than the default. Extend the macro to allow a
platform driver to choose the appropriate register offsets.
Signed-off-by: Feiyang Chen <chenfeiyang@...ngson.cn>
---
.../ethernet/stmicro/stmmac/dwmac1000_core.c | 14 +-
.../ethernet/stmicro/stmmac/dwmac100_core.c | 3 +
.../net/ethernet/stmicro/stmmac/dwmac_dma.h | 205 +++++++++---------
.../net/ethernet/stmicro/stmmac/dwmac_lib.c | 41 ++++
include/linux/stmmac.h | 48 ++++
5 files changed, 210 insertions(+), 101 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index b52793edf62f..9015a61f804c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -19,6 +19,7 @@
#include "stmmac.h"
#include "stmmac_pcs.h"
#include "dwmac1000.h"
+#include "dwmac_dma.h"
static void dwmac1000_core_init(struct mac_device_info *hw,
struct net_device *dev)
@@ -527,12 +528,10 @@ const struct stmmac_ops dwmac1000_ops = {
.set_mac_loopback = dwmac1000_set_mac_loopback,
};
-int dwmac1000_setup(struct stmmac_priv *priv)
+static int _dwmac1000_setup(struct stmmac_priv *priv)
{
struct mac_device_info *mac = priv->hw;
- dev_info(priv->device, "\tDWMAC1000\n");
-
priv->dev->priv_flags |= IFF_UNICAST_FLT;
mac->pcsr = priv->ioaddr;
mac->multicast_filter_bins = priv->plat->multicast_filter_bins;
@@ -558,3 +557,12 @@ int dwmac1000_setup(struct stmmac_priv *priv)
return 0;
}
+
+int dwmac1000_setup(struct stmmac_priv *priv)
+{
+ dev_info(priv->device, "\tDWMAC1000\n");
+
+ priv->plat->dwmac_regs = &dwmac_default_dma_regs;
+
+ return _dwmac1000_setup(priv);
+}
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c
index c03623edeb75..73ee16549775 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c
@@ -18,6 +18,7 @@
#include <asm/io.h>
#include "stmmac.h"
#include "dwmac100.h"
+#include "dwmac_dma.h"
static void dwmac100_core_init(struct mac_device_info *hw,
struct net_device *dev)
@@ -177,6 +178,8 @@ int dwmac100_setup(struct stmmac_priv *priv)
dev_info(priv->device, "\tDWMAC100\n");
+ priv->plat->dwmac_regs = &dwmac_default_dma_regs;
+
mac->pcsr = priv->ioaddr;
mac->link.duplex = MAC_CONTROL_F;
mac->link.speed10 = 0;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
index e7aef136824b..915a4d70fd3b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
@@ -11,38 +11,49 @@
#ifndef __DWMAC_DMA_H__
#define __DWMAC_DMA_H__
-/* DMA CRS Control and Status Register Mapping */
-#define DMA_BUS_MODE 0x00001000 /* Bus Mode */
-#define DMA_XMT_POLL_DEMAND 0x00001004 /* Transmit Poll Demand */
-#define DMA_RCV_POLL_DEMAND 0x00001008 /* Received Poll Demand */
-#define DMA_RCV_BASE_ADDR 0x0000100c /* Receive List Base */
-#define DMA_TX_BASE_ADDR 0x00001010 /* Transmit List Base */
-#define DMA_STATUS 0x00001014 /* Status Register */
-#define DMA_CONTROL 0x00001018 /* Ctrl (Operational Mode) */
-#define DMA_INTR_ENA 0x0000101c /* Interrupt Enable */
-#define DMA_MISSED_FRAME_CTR 0x00001020 /* Missed Frame Counter */
+#include "stmmac.h"
-/* SW Reset */
-#define DMA_BUS_MODE_SFT_RESET 0x00000001 /* Software Reset */
+#define _REGS (priv->plat->dwmac_regs)
-/* Rx watchdog register */
+/* DMA CRS Control and Status Register Mapping */
+#define DMA_CHAN_OFFSET (_REGS->addrs->chan_offset)
+#define DMA_BUS_MODE 0x00001000
+#define DMA_XMT_POLL_DEMAND 0x00001004
+#define DMA_RCV_POLL_DEMAND 0x00001008
+#define DMA_RCV_BASE_ADDR (_REGS->addrs->rcv_base_addr)
+#define DMA_RCV_BASE_ADDR_HI (DMA_RCV_BASE_ADDR + 0x4)
+#define DMA_TX_BASE_ADDR (_REGS->addrs->tx_base_addr)
+#define DMA_TX_BASE_ADDR_HI (DMA_TX_BASE_ADDR + 0x4)
+#define DMA_STATUS 0x00001014
+#define DMA_CONTROL 0x00001018
+#define DMA_INTR_ENA 0x0000101c
+#define DMA_MISSED_FRAME_CTR 0x00001020
#define DMA_RX_WATCHDOG 0x00001024
-
-/* AXI Master Bus Mode */
#define DMA_AXI_BUS_MODE 0x00001028
+#define DMA_HW_FEATURE 0x00001058
+#define DMA_FUNC_CONFIG 0x00001080
+#define DMA_FUNC_CONFIG_HI (DMA_FUNC_CONFIG + 0x4)
+#define DMA_CUR_TX_BUF_ADDR (_REGS->addrs->cur_tx_buf_addr)
+#define DMA_CUR_TX_BUF_ADDR_HI (DMA_CUR_TX_BUF_ADDR + 0x4)
+#define DMA_CUR_RX_BUF_ADDR (_REGS->addrs->cur_rx_buf_addr)
+#define DMA_CUR_RX_BUF_ADDR_HI (DMA_CUR_RX_BUF_ADDR + 0x4)
+#define DMA_RCV_BASE_ADDR_SHADOW1 0x00001068
+#define DMA_RCV_BASE_ADDR_SHADOW2 0x000010a8
+
+/* SW Reset */
+#define DMA_BUS_MODE_SFT_RESET 0x00000001 /* Software Reset */
#define DMA_AXI_EN_LPI BIT(31)
#define DMA_AXI_LPI_XIT_FRM BIT(30)
-#define DMA_AXI_WR_OSR_LMT GENMASK(23, 20)
-#define DMA_AXI_WR_OSR_LMT_SHIFT 20
-#define DMA_AXI_WR_OSR_LMT_MASK 0xf
-#define DMA_AXI_RD_OSR_LMT GENMASK(19, 16)
-#define DMA_AXI_RD_OSR_LMT_SHIFT 16
-#define DMA_AXI_RD_OSR_LMT_MASK 0xf
-
-#define DMA_AXI_OSR_MAX 0xf
-#define DMA_AXI_MAX_OSR_LIMIT ((DMA_AXI_OSR_MAX << DMA_AXI_WR_OSR_LMT_SHIFT) | \
- (DMA_AXI_OSR_MAX << DMA_AXI_RD_OSR_LMT_SHIFT))
+#define DMA_AXI_WR_OSR_LMT (_REGS->axi->wr_osr_lmt)
+#define DMA_AXI_WR_OSR_LMT_SHIFT (_REGS->axi->wr_osr_lmt_shift)
+#define DMA_AXI_WR_OSR_LMT_MASK (_REGS->axi->wr_osr_lmt_mask)
+#define DMA_AXI_RD_OSR_LMT (_REGS->axi->rd_osr_lmt)
+#define DMA_AXI_RD_OSR_LMT_SHIFT (_REGS->axi->rd_osr_lmt_shift)
+#define DMA_AXI_RD_OSR_LMT_MASK (_REGS->axi->rd_osr_lmt_mask)
+#define DMA_AXI_OSR_MAX (_REGS->axi->osr_max)
+#define DMA_AXI_MAX_OSR_LIMIT ((DMA_AXI_OSR_MAX << DMA_AXI_WR_OSR_LMT_SHIFT) | \
+ (DMA_AXI_OSR_MAX << DMA_AXI_RD_OSR_LMT_SHIFT))
#define DMA_AXI_1KBBE BIT(13)
#define DMA_AXI_AAL BIT(12)
#define DMA_AXI_BLEN256 BIT(7)
@@ -61,38 +72,30 @@
#define DMA_AXI_BURST_LEN_MASK 0x000000FE
-#define DMA_CUR_TX_BUF_ADDR 0x00001050 /* Current Host Tx Buffer */
-#define DMA_CUR_RX_BUF_ADDR 0x00001054 /* Current Host Rx Buffer */
-#define DMA_HW_FEATURE 0x00001058 /* HW Feature Register */
-
-/* DMA Control register defines */
-#define DMA_CONTROL_ST 0x00002000 /* Start/Stop Transmission */
-#define DMA_CONTROL_SR 0x00000002 /* Start/Stop Receive */
-
/* DMA Normal interrupt */
-#define DMA_INTR_ENA_NIE 0x00010000 /* Normal Summary */
-#define DMA_INTR_ENA_TIE 0x00000001 /* Transmit Interrupt */
-#define DMA_INTR_ENA_TUE 0x00000004 /* Transmit Buffer Unavailable */
-#define DMA_INTR_ENA_RIE 0x00000040 /* Receive Interrupt */
-#define DMA_INTR_ENA_ERE 0x00004000 /* Early Receive */
+#define DMA_INTR_ENA_NIE (_REGS->intr_ena->nie)
+#define DMA_INTR_ENA_TIE 0x00000001
+#define DMA_INTR_ENA_TUE 0x00000004
+#define DMA_INTR_ENA_RIE 0x00000040
+#define DMA_INTR_ENA_ERE 0x00004000
-#define DMA_INTR_NORMAL (DMA_INTR_ENA_NIE | DMA_INTR_ENA_RIE | \
- DMA_INTR_ENA_TIE)
+#define DMA_INTR_NORMAL (DMA_INTR_ENA_NIE | DMA_INTR_ENA_RIE | \
+ DMA_INTR_ENA_TIE)
/* DMA Abnormal interrupt */
-#define DMA_INTR_ENA_AIE 0x00008000 /* Abnormal Summary */
-#define DMA_INTR_ENA_FBE 0x00002000 /* Fatal Bus Error */
-#define DMA_INTR_ENA_ETE 0x00000400 /* Early Transmit */
-#define DMA_INTR_ENA_RWE 0x00000200 /* Receive Watchdog */
-#define DMA_INTR_ENA_RSE 0x00000100 /* Receive Stopped */
-#define DMA_INTR_ENA_RUE 0x00000080 /* Receive Buffer Unavailable */
-#define DMA_INTR_ENA_UNE 0x00000020 /* Tx Underflow */
-#define DMA_INTR_ENA_OVE 0x00000010 /* Receive Overflow */
-#define DMA_INTR_ENA_TJE 0x00000008 /* Transmit Jabber */
-#define DMA_INTR_ENA_TSE 0x00000002 /* Transmit Stopped */
+#define DMA_INTR_ENA_AIE (_REGS->intr_ena->aie)
+#define DMA_INTR_ENA_FBE 0x00002000
+#define DMA_INTR_ENA_ETE 0x00000400
+#define DMA_INTR_ENA_RWE 0x00000200
+#define DMA_INTR_ENA_RSE 0x00000100
+#define DMA_INTR_ENA_RUE 0x00000080
+#define DMA_INTR_ENA_UNE 0x00000020
+#define DMA_INTR_ENA_OVE 0x00000010
+#define DMA_INTR_ENA_TJE 0x00000008
+#define DMA_INTR_ENA_TSE 0x00000002
#define DMA_INTR_ABNORMAL (DMA_INTR_ENA_AIE | DMA_INTR_ENA_FBE | \
- DMA_INTR_ENA_UNE)
+ DMA_INTR_ENA_UNE)
/* DMA default interrupt mask */
#define DMA_INTR_DEFAULT_MASK (DMA_INTR_NORMAL | DMA_INTR_ABNORMAL)
@@ -100,58 +103,64 @@
#define DMA_INTR_DEFAULT_TX (DMA_INTR_ENA_TIE)
/* DMA Status register defines */
-#define DMA_STATUS_GLPII 0x40000000 /* GMAC LPI interrupt */
-#define DMA_STATUS_GPI 0x10000000 /* PMT interrupt */
-#define DMA_STATUS_GMI 0x08000000 /* MMC interrupt */
-#define DMA_STATUS_GLI 0x04000000 /* GMAC Line interface int */
-#define DMA_STATUS_EB_MASK 0x00380000 /* Error Bits Mask */
-#define DMA_STATUS_EB_TX_ABORT 0x00080000 /* Error Bits - TX Abort */
-#define DMA_STATUS_EB_RX_ABORT 0x00100000 /* Error Bits - RX Abort */
-#define DMA_STATUS_TS_MASK 0x00700000 /* Transmit Process State */
-#define DMA_STATUS_TS_SHIFT 20
-#define DMA_STATUS_RS_MASK 0x000e0000 /* Receive Process State */
-#define DMA_STATUS_RS_SHIFT 17
-#define DMA_STATUS_NIS 0x00010000 /* Normal Interrupt Summary */
-#define DMA_STATUS_AIS 0x00008000 /* Abnormal Interrupt Summary */
-#define DMA_STATUS_ERI 0x00004000 /* Early Receive Interrupt */
-#define DMA_STATUS_FBI 0x00002000 /* Fatal Bus Error Interrupt */
-#define DMA_STATUS_ETI 0x00000400 /* Early Transmit Interrupt */
-#define DMA_STATUS_RWT 0x00000200 /* Receive Watchdog Timeout */
-#define DMA_STATUS_RPS 0x00000100 /* Receive Process Stopped */
-#define DMA_STATUS_RU 0x00000080 /* Receive Buffer Unavailable */
-#define DMA_STATUS_RI 0x00000040 /* Receive Interrupt */
-#define DMA_STATUS_UNF 0x00000020 /* Transmit Underflow */
-#define DMA_STATUS_OVF 0x00000010 /* Receive Overflow */
-#define DMA_STATUS_TJT 0x00000008 /* Transmit Jabber Timeout */
-#define DMA_STATUS_TU 0x00000004 /* Transmit Buffer Unavailable */
-#define DMA_STATUS_TPS 0x00000002 /* Transmit Process Stopped */
-#define DMA_STATUS_TI 0x00000001 /* Transmit Interrupt */
-#define DMA_CONTROL_FTF 0x00100000 /* Flush transmit FIFO */
-
-#define DMA_STATUS_MSK_COMMON (DMA_STATUS_NIS | \
- DMA_STATUS_AIS | \
- DMA_STATUS_FBI)
-
-#define DMA_STATUS_MSK_RX (DMA_STATUS_ERI | \
- DMA_STATUS_RWT | \
- DMA_STATUS_RPS | \
- DMA_STATUS_RU | \
- DMA_STATUS_RI | \
- DMA_STATUS_OVF | \
- DMA_STATUS_MSK_COMMON)
-
-#define DMA_STATUS_MSK_TX (DMA_STATUS_ETI | \
- DMA_STATUS_UNF | \
- DMA_STATUS_TJT | \
- DMA_STATUS_TU | \
- DMA_STATUS_TPS | \
- DMA_STATUS_TI | \
- DMA_STATUS_MSK_COMMON)
+#define DMA_STATUS_GLPII (_REGS->status->glpii)
+#define DMA_STATUS_GPI 0x10000000
+#define DMA_STATUS_GMI 0x08000000
+#define DMA_STATUS_GLI 0x04000000
+#define DMA_STATUS_EB_MASK (_REGS->status->eb_mask)
+#define DMA_STATUS_EB_TX_ABORT 0x00080000
+#define DMA_STATUS_EB_RX_ABORT 0x00100000
+#define DMA_STATUS_TS_MASK (_REGS->status->ts_mask)
+#define DMA_STATUS_TS_SHIFT (_REGS->status->ts_shift)
+#define DMA_STATUS_RS_MASK (_REGS->status->rs_mask)
+#define DMA_STATUS_RS_SHIFT (_REGS->status->rs_shift)
+#define DMA_STATUS_NIS (_REGS->status->nis)
+#define DMA_STATUS_AIS (_REGS->status->ais)
+#define DMA_STATUS_ERI 0x00004000
+#define DMA_STATUS_FBI (_REGS->status->fbi)
+#define DMA_STATUS_ETI 0x00000400
+#define DMA_STATUS_RWT 0x00000200
+#define DMA_STATUS_RPS 0x00000100
+#define DMA_STATUS_RU 0x00000080
+#define DMA_STATUS_RI 0x00000040
+#define DMA_STATUS_UNF 0x00000020
+#define DMA_STATUS_OVF 0x00000010
+#define DMA_STATUS_TJT 0x00000008
+#define DMA_STATUS_TU 0x00000004
+#define DMA_STATUS_TPS 0x00000002
+#define DMA_STATUS_TI 0x00000001
+
+#define DMA_STATUS_MSK_COMMON (DMA_STATUS_NIS | \
+ DMA_STATUS_AIS | \
+ DMA_STATUS_FBI)
+
+#define DMA_STATUS_MSK_RX (DMA_STATUS_ERI | \
+ DMA_STATUS_RWT | \
+ DMA_STATUS_RPS | \
+ DMA_STATUS_RU | \
+ DMA_STATUS_RI | \
+ DMA_STATUS_OVF | \
+ DMA_STATUS_MSK_COMMON)
+
+#define DMA_STATUS_MSK_TX (DMA_STATUS_ETI | \
+ DMA_STATUS_UNF | \
+ DMA_STATUS_TJT | \
+ DMA_STATUS_TU | \
+ DMA_STATUS_TPS | \
+ DMA_STATUS_TI | \
+ DMA_STATUS_MSK_COMMON)
+
+/* DMA Control register defines */
+#define DMA_CONTROL_ST 0x00002000 /* Start/Stop Transmission */
+#define DMA_CONTROL_SR 0x00000002 /* Start/Stop Receive */
+#define DMA_CONTROL_FTF 0x00100000 /* Flush transmit FIFO */
#define NUM_DWMAC100_DMA_REGS 9
#define NUM_DWMAC1000_DMA_REGS 23
#define NUM_DWMAC4_DMA_REGS 27
+extern const struct dwmac_regs dwmac_default_dma_regs;
+
void dwmac_enable_dma_transmission(struct stmmac_priv *priv,
void __iomem *ioaddr, u32 chan);
void dwmac_enable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
index 2dd457032187..266f64148c1a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
@@ -13,6 +13,47 @@
#define GMAC_HI_REG_AE 0x80000000
+static const struct dwmac_dma_addrs default_dma_addrs = {
+ .rcv_base_addr = 0x0000100c,
+ .tx_base_addr = 0x00001010,
+ .cur_tx_buf_addr = 0x00001050,
+ .cur_rx_buf_addr = 0x00001054
+};
+
+static const struct dwmac_dma_axi default_dma_axi = {
+ .wr_osr_lmt = GENMASK(23, 20),
+ .wr_osr_lmt_shift = 20,
+ .wr_osr_lmt_mask = 0xf,
+ .rd_osr_lmt = GENMASK(19, 16),
+ .rd_osr_lmt_shift = 16,
+ .rd_osr_lmt_mask = 0xf,
+ .osr_max = 0xf
+};
+
+static const struct dwmac_dma_intr_ena default_dma_intr_ena = {
+ .nie = 0x00010000,
+ .aie = 0x00008000
+};
+
+static const struct dwmac_dma_status default_dma_status = {
+ .glpii = 0x40000000,
+ .eb_mask = 0x00380000,
+ .ts_mask = 0x00700000,
+ .ts_shift = 20,
+ .rs_mask = 0x000e0000,
+ .rs_shift = 17,
+ .nis = 0x00010000,
+ .ais = 0x00008000,
+ .fbi = 0x00002000
+};
+
+const struct dwmac_regs dwmac_default_dma_regs = {
+ .addrs = &default_dma_addrs,
+ .axi = &default_dma_axi,
+ .intr_ena = &default_dma_intr_ena,
+ .status = &default_dma_status
+};
+
int dwmac_dma_reset(void __iomem *ioaddr)
{
u32 value = readl(ioaddr + DMA_BUS_MODE);
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index 225751a8fd8e..eafe85e45977 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -204,6 +204,53 @@ struct dwmac4_addrs {
u32 mtl_low_cred_offset;
};
+/* DMA addresses that may be customized by a platform */
+struct dwmac_dma_addrs {
+ u32 chan_offset;
+ u32 rcv_base_addr;
+ u32 tx_base_addr;
+ u32 cur_tx_buf_addr;
+ u32 cur_rx_buf_addr;
+};
+
+/* DMA AXI registers that may be customized by a platform */
+struct dwmac_dma_axi {
+ u32 wr_osr_lmt;
+ u32 wr_osr_lmt_shift;
+ u32 wr_osr_lmt_mask;
+ u32 rd_osr_lmt;
+ u32 rd_osr_lmt_shift;
+ u32 rd_osr_lmt_mask;
+ u32 osr_max;
+};
+
+/* DMA normal and abnormal interrupt that may be customized by a platform */
+struct dwmac_dma_intr_ena {
+ u32 nie;
+ u32 aie;
+};
+
+/* DMA Status register that may be customized by a platform */
+struct dwmac_dma_status {
+ u32 glpii;
+ u32 eb_mask;
+ u32 ts_mask;
+ u32 ts_shift;
+ u32 rs_mask;
+ u32 rs_shift;
+ u32 nis;
+ u32 ais;
+ u32 fbi;
+};
+
+/* Registers that may be customized by a platform */
+struct dwmac_regs {
+ const struct dwmac_dma_addrs *addrs;
+ const struct dwmac_dma_axi *axi;
+ const struct dwmac_dma_intr_ena *intr_ena;
+ const struct dwmac_dma_status *status;
+};
+
struct plat_stmmacenet_data {
int bus_id;
int phy_addr;
@@ -293,5 +340,6 @@ struct plat_stmmacenet_data {
bool sph_disable;
bool serdes_up_after_phy_linkup;
const struct dwmac4_addrs *dwmac4_addrs;
+ const struct dwmac_regs *dwmac_regs;
};
#endif
--
2.39.3
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