From 764dee47e2c1ed828c8a51cbf58f89b5e3ded11b Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Tue, 19 Oct 2021 07:11:40 +0800
Subject: [PATCH] mt76: sdio: move common code in mt76_sdio module
Git-commit: 764dee47e2c1ed828c8a51cbf58f89b5e3ded11b
Patch-mainline: v5.16-rc1
References: bsc#1209980
Move sdio common code in mt76_sdio module.
This is a preliminary patch to support mt7921s devices.
Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/mediatek/mt76/Makefile | 2 +-
drivers/net/wireless/mediatek/mt76/mt76.h | 16 +
.../wireless/mediatek/mt76/mt7615/Makefile | 2 +-
.../wireless/mediatek/mt76/mt7615/mt7615.h | 4 -
.../net/wireless/mediatek/mt76/mt7615/sdio.c | 279 +--------------
.../net/wireless/mediatek/mt76/mt7615/sdio.h | 115 ------
.../wireless/mediatek/mt76/mt7615/sdio_mcu.c | 6 +-
.../wireless/mediatek/mt76/mt7615/sdio_txrx.c | 334 ------------------
drivers/net/wireless/mediatek/mt76/sdio.c | 265 ++++++++++++++
drivers/net/wireless/mediatek/mt76/sdio.h | 115 ++++++
.../net/wireless/mediatek/mt76/sdio_txrx.c | 328 +++++++++++++++++
11 files changed, 748 insertions(+), 718 deletions(-)
delete mode 100644 drivers/net/wireless/mediatek/mt76/mt7615/sdio.h
delete mode 100644 drivers/net/wireless/mediatek/mt76/mt7615/sdio_txrx.c
create mode 100644 drivers/net/wireless/mediatek/mt76/sdio.h
create mode 100644 drivers/net/wireless/mediatek/mt76/sdio_txrx.c
diff --git a/drivers/net/wireless/mediatek/mt76/Makefile b/drivers/net/wireless/mediatek/mt76/Makefile
index 94efe3c29053..79ab850a45a2 100644
--- a/drivers/net/wireless/mediatek/mt76/Makefile
+++ b/drivers/net/wireless/mediatek/mt76/Makefile
@@ -14,7 +14,7 @@ mt76-$(CONFIG_PCI) += pci.o
mt76-$(CONFIG_NL80211_TESTMODE) += testmode.o
mt76-usb-y := usb.o usb_trace.o
-mt76-sdio-y := sdio.o
+mt76-sdio-y := sdio.o sdio_txrx.o
CFLAGS_trace.o := -I$(src)
CFLAGS_usb_trace.o := -I$(src)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index a28e5c0a158f..8dc4bbaca15d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -1248,6 +1248,22 @@ int mt76s_init(struct mt76_dev *dev, struct sdio_func *func,
int mt76s_alloc_rx_queue(struct mt76_dev *dev, enum mt76_rxq_id qid);
int mt76s_alloc_tx(struct mt76_dev *dev);
void mt76s_deinit(struct mt76_dev *dev);
+void mt76s_sdio_irq(struct sdio_func *func);
+void mt76s_txrx_worker(struct mt76_sdio *sdio);
+int mt76s_hw_init(struct mt76_dev *dev, struct sdio_func *func);
+u32 mt76s_rr(struct mt76_dev *dev, u32 offset);
+void mt76s_wr(struct mt76_dev *dev, u32 offset, u32 val);
+u32 mt76s_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val);
+u32 mt76s_read_pcr(struct mt76_dev *dev);
+void mt76s_write_copy(struct mt76_dev *dev, u32 offset,
+ const void *data, int len);
+void mt76s_read_copy(struct mt76_dev *dev, u32 offset,
+ void *data, int len);
+int mt76s_wr_rp(struct mt76_dev *dev, u32 base,
+ const struct mt76_reg_pair *data,
+ int len);
+int mt76s_rd_rp(struct mt76_dev *dev, u32 base,
+ struct mt76_reg_pair *data, int len);
struct sk_buff *
mt76_mcu_msg_alloc(struct mt76_dev *dev, const void *data,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/Makefile b/drivers/net/wireless/mediatek/mt76/mt7615/Makefile
index 83f9861ff522..2b97b9dde477 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/Makefile
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/Makefile
@@ -17,4 +17,4 @@ mt7615e-$(CONFIG_MT7622_WMAC) += soc.o
mt7663-usb-sdio-common-y := usb_sdio.o
mt7663u-y := usb.o usb_mcu.o
-mt7663s-y := sdio.o sdio_mcu.o sdio_txrx.o
+mt7663s-y := sdio.o sdio_mcu.o
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
index 437f14f06e63..77bd59813d47 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
@@ -569,10 +569,6 @@ int mt7663_usb_sdio_register_device(struct mt7615_dev *dev);
int mt7663u_mcu_init(struct mt7615_dev *dev);
/* sdio */
-u32 mt7663s_read_pcr(struct mt7615_dev *dev);
int mt7663s_mcu_init(struct mt7615_dev *dev);
-void mt7663s_txrx_worker(struct mt76_worker *w);
-void mt7663s_rx_work(struct work_struct *work);
-void mt7663s_sdio_irq(struct sdio_func *func);
#endif
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c b/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c
index ff1e62035f37..14108e3fadda 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/sdio.c
@@ -14,8 +14,8 @@
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/sdio_func.h>
+#include "../sdio.h"
#include "mt7615.h"
-#include "sdio.h"
#include "mac.h"
#include "mcu.h"
@@ -24,200 +24,19 @@ static const struct sdio_device_id mt7663s_table[] = {
{ } /* Terminating entry */
};
-static u32 mt7663s_read_whisr(struct mt76_dev *dev)
+static void mt7663s_txrx_worker(struct mt76_worker *w)
{
- return sdio_readl(dev->sdio.func, MCR_WHISR, NULL);
-}
-
-u32 mt7663s_read_pcr(struct mt7615_dev *dev)
-{
- struct mt76_sdio *sdio = &dev->mt76.sdio;
-
- return sdio_readl(sdio->func, MCR_WHLPCR, NULL);
-}
-
-static u32 mt7663s_read_mailbox(struct mt76_dev *dev, u32 offset)
-{
- struct sdio_func *func = dev->sdio.func;
- u32 val = ~0, status;
- int err;
-
- sdio_claim_host(func);
-
- sdio_writel(func, offset, MCR_H2DSM0R, &err);
- if (err < 0) {
- dev_err(dev->dev, "failed setting address [err=%d]\n", err);
- goto out;
- }
-
- sdio_writel(func, H2D_SW_INT_READ, MCR_WSICR, &err);
- if (err < 0) {
- dev_err(dev->dev, "failed setting read mode [err=%d]\n", err);
- goto out;
- }
-
- err = readx_poll_timeout(mt7663s_read_whisr, dev, status,
- status & H2D_SW_INT_READ, 0, 1000000);
- if (err < 0) {
- dev_err(dev->dev, "query whisr timeout\n");
- goto out;
- }
-
- sdio_writel(func, H2D_SW_INT_READ, MCR_WHISR, &err);
- if (err < 0) {
- dev_err(dev->dev, "failed setting read mode [err=%d]\n", err);
- goto out;
- }
-
- val = sdio_readl(func, MCR_H2DSM0R, &err);
- if (err < 0) {
- dev_err(dev->dev, "failed reading h2dsm0r [err=%d]\n", err);
- goto out;
- }
-
- if (val != offset) {
- dev_err(dev->dev, "register mismatch\n");
- val = ~0;
- goto out;
- }
-
- val = sdio_readl(func, MCR_D2HRM1R, &err);
- if (err < 0)
- dev_err(dev->dev, "failed reading d2hrm1r [err=%d]\n", err);
-
-out:
- sdio_release_host(func);
-
- return val;
-}
-
-static void mt7663s_write_mailbox(struct mt76_dev *dev, u32 offset, u32 val)
-{
- struct sdio_func *func = dev->sdio.func;
- u32 status;
- int err;
-
- sdio_claim_host(func);
-
- sdio_writel(func, offset, MCR_H2DSM0R, &err);
- if (err < 0) {
- dev_err(dev->dev, "failed setting address [err=%d]\n", err);
- goto out;
- }
-
- sdio_writel(func, val, MCR_H2DSM1R, &err);
- if (err < 0) {
- dev_err(dev->dev,
- "failed setting write value [err=%d]\n", err);
- goto out;
- }
-
- sdio_writel(func, H2D_SW_INT_WRITE, MCR_WSICR, &err);
- if (err < 0) {
- dev_err(dev->dev, "failed setting write mode [err=%d]\n", err);
- goto out;
- }
-
- err = readx_poll_timeout(mt7663s_read_whisr, dev, status,
- status & H2D_SW_INT_WRITE, 0, 1000000);
- if (err < 0) {
- dev_err(dev->dev, "query whisr timeout\n");
- goto out;
- }
-
- sdio_writel(func, H2D_SW_INT_WRITE, MCR_WHISR, &err);
- if (err < 0) {
- dev_err(dev->dev, "failed setting write mode [err=%d]\n", err);
- goto out;
- }
-
- val = sdio_readl(func, MCR_H2DSM0R, &err);
- if (err < 0) {
- dev_err(dev->dev, "failed reading h2dsm0r [err=%d]\n", err);
- goto out;
- }
-
- if (val != offset)
- dev_err(dev->dev, "register mismatch\n");
-
-out:
- sdio_release_host(func);
-}
-
-static u32 mt7663s_rr(struct mt76_dev *dev, u32 offset)
-{
- if (test_bit(MT76_STATE_MCU_RUNNING, &dev->phy.state))
- return dev->mcu_ops->mcu_rr(dev, offset);
- else
- return mt7663s_read_mailbox(dev, offset);
-}
-
-static void mt7663s_wr(struct mt76_dev *dev, u32 offset, u32 val)
-{
- if (test_bit(MT76_STATE_MCU_RUNNING, &dev->phy.state))
- dev->mcu_ops->mcu_wr(dev, offset, val);
- else
- mt7663s_write_mailbox(dev, offset, val);
-}
-
-static u32 mt7663s_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val)
-{
- val |= mt7663s_rr(dev, offset) & ~mask;
- mt7663s_wr(dev, offset, val);
-
- return val;
-}
-
-static void mt7663s_write_copy(struct mt76_dev *dev, u32 offset,
- const void *data, int len)
-{
- const u32 *val = data;
- int i;
-
- for (i = 0; i < len / sizeof(u32); i++) {
- mt7663s_wr(dev, offset, val[i]);
- offset += sizeof(u32);
- }
-}
-
-static void mt7663s_read_copy(struct mt76_dev *dev, u32 offset,
- void *data, int len)
-{
- u32 *val = data;
- int i;
-
- for (i = 0; i < len / sizeof(u32); i++) {
- val[i] = mt7663s_rr(dev, offset);
- offset += sizeof(u32);
- }
-}
+ struct mt76_sdio *sdio = container_of(w, struct mt76_sdio,
+ txrx_worker);
+ struct mt76_dev *mdev = container_of(sdio, struct mt76_dev, sdio);
+ struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
-static int mt7663s_wr_rp(struct mt76_dev *dev, u32 base,
- const struct mt76_reg_pair *data,
- int len)
-{
- int i;
-
- for (i = 0; i < len; i++) {
- mt7663s_wr(dev, data->reg, data->value);
- data++;
- }
-
- return 0;
-}
-
-static int mt7663s_rd_rp(struct mt76_dev *dev, u32 base,
- struct mt76_reg_pair *data,
- int len)
-{
- int i;
-
- for (i = 0; i < len; i++) {
- data->value = mt7663s_rr(dev, data->reg);
- data++;
+ if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
+ queue_work(mdev->wq, &dev->pm.wake_work);
+ return;
}
-
- return 0;
+ mt76s_txrx_worker(sdio);
+ mt76_connac_pm_unref(&dev->mphy, &dev->pm);
}
static void mt7663s_init_work(struct work_struct *work)
@@ -231,66 +50,6 @@ static void mt7663s_init_work(struct work_struct *work)
mt7615_init_work(dev);
}
-static int mt7663s_hw_init(struct mt7615_dev *dev, struct sdio_func *func)
-{
- u32 status, ctrl;
- int ret;
-
- sdio_claim_host(func);
-
- ret = sdio_enable_func(func);
- if (ret < 0)
- goto release;
-
- /* Get ownership from the device */
- sdio_writel(func, WHLPCR_INT_EN_CLR | WHLPCR_FW_OWN_REQ_CLR,
- MCR_WHLPCR, &ret);
- if (ret < 0)
- goto disable_func;
-
- ret = readx_poll_timeout(mt7663s_read_pcr, dev, status,
- status & WHLPCR_IS_DRIVER_OWN, 2000, 1000000);
- if (ret < 0) {
- dev_err(dev->mt76.dev, "Cannot get ownership from device");
- goto disable_func;
- }
-
- ret = sdio_set_block_size(func, 512);
- if (ret < 0)
- goto disable_func;
-
- /* Enable interrupt */
- sdio_writel(func, WHLPCR_INT_EN_SET, MCR_WHLPCR, &ret);
- if (ret < 0)
- goto disable_func;
-
- ctrl = WHIER_RX0_DONE_INT_EN | WHIER_TX_DONE_INT_EN;
- sdio_writel(func, ctrl, MCR_WHIER, &ret);
- if (ret < 0)
- goto disable_func;
-
- /* set WHISR as read clear and Rx aggregation number as 16 */
- ctrl = FIELD_PREP(MAX_HIF_RX_LEN_NUM, 16);
- sdio_writel(func, ctrl, MCR_WHCR, &ret);
- if (ret < 0)
- goto disable_func;
-
- ret = sdio_claim_irq(func, mt7663s_sdio_irq);
- if (ret < 0)
- goto disable_func;
-
- sdio_release_host(func);
-
- return 0;
-
-disable_func:
- sdio_disable_func(func);
-release:
- sdio_release_host(func);
-
- return ret;
-}
-
static int mt7663s_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
@@ -307,13 +66,13 @@ static int mt7663s_probe(struct sdio_func *func,
.update_survey = mt7615_update_channel,
};
static const struct mt76_bus_ops mt7663s_ops = {
- .rr = mt7663s_rr,
- .rmw = mt7663s_rmw,
- .wr = mt7663s_wr,
- .write_copy = mt7663s_write_copy,
- .read_copy = mt7663s_read_copy,
- .wr_rp = mt7663s_wr_rp,
- .rd_rp = mt7663s_rd_rp,
+ .rr = mt76s_rr,
+ .rmw = mt76s_rmw,
+ .wr = mt76s_wr,
+ .write_copy = mt76s_write_copy,
+ .read_copy = mt76s_read_copy,
+ .wr_rp = mt76s_wr_rp,
+ .rd_rp = mt76s_rd_rp,
.type = MT76_BUS_SDIO,
};
struct ieee80211_ops *ops;
@@ -341,7 +100,7 @@ static int mt7663s_probe(struct sdio_func *func,
if (ret < 0)
goto error;
- ret = mt7663s_hw_init(dev, func);
+ ret = mt76s_hw_init(mdev, func);
if (ret)
goto error;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/sdio.h b/drivers/net/wireless/mediatek/mt76/mt7615/sdio.h
deleted file mode 100644
index 03877d89e152..000000000000
--- a/drivers/net/wireless/mediatek/mt76/mt7615/sdio.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/* SPDX-License-Identifier: ISC */
-/* Copyright (C) 2020 MediaTek Inc.
- *
- * Author: Sean Wang <sean.wang@mediatek.com>
- */
-
-#ifndef __MT76S_H
-#define __MT76S_H
-
-#define MT_PSE_PAGE_SZ 128
-
-#define MCR_WCIR 0x0000
-#define MCR_WHLPCR 0x0004
-#define WHLPCR_FW_OWN_REQ_CLR BIT(9)
-#define WHLPCR_FW_OWN_REQ_SET BIT(8)
-#define WHLPCR_IS_DRIVER_OWN BIT(8)
-#define WHLPCR_INT_EN_CLR BIT(1)
-#define WHLPCR_INT_EN_SET BIT(0)
-
-#define MCR_WSDIOCSR 0x0008
-#define MCR_WHCR 0x000C
-#define W_INT_CLR_CTRL BIT(1)
-#define RECV_MAILBOX_RD_CLR_EN BIT(2)
-#define MAX_HIF_RX_LEN_NUM GENMASK(13, 8)
-#define RX_ENHANCE_MODE BIT(16)
-
-#define MCR_WHISR 0x0010
-#define MCR_WHIER 0x0014
-#define WHIER_D2H_SW_INT GENMASK(31, 8)
-#define WHIER_FW_OWN_BACK_INT_EN BIT(7)
-#define WHIER_ABNORMAL_INT_EN BIT(6)
-#define WHIER_RX1_DONE_INT_EN BIT(2)
-#define WHIER_RX0_DONE_INT_EN BIT(1)
-#define WHIER_TX_DONE_INT_EN BIT(0)
-#define WHIER_DEFAULT (WHIER_RX0_DONE_INT_EN | \
- WHIER_RX1_DONE_INT_EN | \
- WHIER_TX_DONE_INT_EN | \
- WHIER_ABNORMAL_INT_EN | \
- WHIER_D2H_SW_INT)
-
-#define MCR_WASR 0x0020
-#define MCR_WSICR 0x0024
-#define MCR_WTSR0 0x0028
-#define TQ0_CNT GENMASK(7, 0)
-#define TQ1_CNT GENMASK(15, 8)
-#define TQ2_CNT GENMASK(23, 16)
-#define TQ3_CNT GENMASK(31, 24)
-
-#define MCR_WTSR1 0x002c
-#define TQ4_CNT GENMASK(7, 0)
-#define TQ5_CNT GENMASK(15, 8)
-#define TQ6_CNT GENMASK(23, 16)
-#define TQ7_CNT GENMASK(31, 24)
-
-#define MCR_WTDR1 0x0034
-#define MCR_WRDR0 0x0050
-#define MCR_WRDR1 0x0054
-#define MCR_WRDR(p) (0x0050 + 4 * (p))
-#define MCR_H2DSM0R 0x0070
-#define H2D_SW_INT_READ BIT(16)
-#define H2D_SW_INT_WRITE BIT(17)
-
-#define MCR_H2DSM1R 0x0074
-#define MCR_D2HRM0R 0x0078
-#define MCR_D2HRM1R 0x007c
-#define MCR_D2HRM2R 0x0080
-#define MCR_WRPLR 0x0090
-#define RX0_PACKET_LENGTH GENMASK(15, 0)
-#define RX1_PACKET_LENGTH GENMASK(31, 16)
-
-#define MCR_WTMDR 0x00b0
-#define MCR_WTMCR 0x00b4
-#define MCR_WTMDPCR0 0x00b8
-#define MCR_WTMDPCR1 0x00bc
-#define MCR_WPLRCR 0x00d4
-#define MCR_WSR 0x00D8
-#define MCR_CLKIOCR 0x0100
-#define MCR_CMDIOCR 0x0104
-#define MCR_DAT0IOCR 0x0108
-#define MCR_DAT1IOCR 0x010C
-#define MCR_DAT2IOCR 0x0110
-#define MCR_DAT3IOCR 0x0114
-#define MCR_CLKDLYCR 0x0118
-#define MCR_CMDDLYCR 0x011C
-#define MCR_ODATDLYCR 0x0120
-#define MCR_IDATDLYCR1 0x0124
-#define MCR_IDATDLYCR2 0x0128
-#define MCR_ILCHCR 0x012C
-#define MCR_WTQCR0 0x0130
-#define MCR_WTQCR1 0x0134
-#define MCR_WTQCR2 0x0138
-#define MCR_WTQCR3 0x013C
-#define MCR_WTQCR4 0x0140
-#define MCR_WTQCR5 0x0144
-#define MCR_WTQCR6 0x0148
-#define MCR_WTQCR7 0x014C
-#define MCR_WTQCR(x) (0x130 + 4 * (x))
-#define TXQ_CNT_L GENMASK(15, 0)
-#define TXQ_CNT_H GENMASK(31, 16)
-
-#define MCR_SWPCDBGR 0x0154
-
-struct mt76s_intr {
- u32 isr;
- struct {
- u32 wtqcr[8];
- } tx;
- struct {
- u16 num[2];
- u16 len[2][16];
- } rx;
- u32 rec_mb[2];
-} __packed;
-
-#endif
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/sdio_mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/sdio_mcu.c
index 517419bb7772..f76986c807ab 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/sdio_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/sdio_mcu.c
@@ -10,11 +10,11 @@
#include <linux/module.h>
#include <linux/iopoll.h>
+#include "../sdio.h"
#include "mt7615.h"
#include "mac.h"
#include "mcu.h"
#include "regs.h"
-#include "sdio.h"
static int mt7663s_mcu_init_sched(struct mt7615_dev *dev)
{
@@ -63,7 +63,7 @@ static int __mt7663s_mcu_drv_pmctrl(struct mt7615_dev *dev)
sdio_writel(func, WHLPCR_FW_OWN_REQ_CLR, MCR_WHLPCR, NULL);
- ret = readx_poll_timeout(mt7663s_read_pcr, dev, status,
+ ret = readx_poll_timeout(mt76s_read_pcr, &dev->mt76, status,
status & WHLPCR_IS_DRIVER_OWN, 2000, 1000000);
if (ret < 0) {
dev_err(dev->mt76.dev, "Cannot get ownership from device");
@@ -111,7 +111,7 @@ static int mt7663s_mcu_fw_pmctrl(struct mt7615_dev *dev)
sdio_writel(func, WHLPCR_FW_OWN_REQ_SET, MCR_WHLPCR, NULL);
- ret = readx_poll_timeout(mt7663s_read_pcr, dev, status,
+ ret = readx_poll_timeout(mt76s_read_pcr, &dev->mt76, status,
!(status & WHLPCR_IS_DRIVER_OWN), 2000, 1000000);
if (ret < 0) {
dev_err(dev->mt76.dev, "Cannot set ownership to device");
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/sdio_txrx.c b/drivers/net/wireless/mediatek/mt76/mt7615/sdio_txrx.c
deleted file mode 100644
index 04f4c89b7499..000000000000
--- a/drivers/net/wireless/mediatek/mt76/mt7615/sdio_txrx.c
+++ /dev/null
@@ -1,334 +0,0 @@
-// SPDX-License-Identifier: ISC
-/* Copyright (C) 2020 MediaTek Inc.
- *
- * Author: Felix Fietkau <nbd@nbd.name>
- * Lorenzo Bianconi <lorenzo@kernel.org>
- * Sean Wang <sean.wang@mediatek.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/iopoll.h>
-#include <linux/module.h>
-
-#include <linux/mmc/host.h>
-#include <linux/mmc/sdio_ids.h>
-#include <linux/mmc/sdio_func.h>
-
-#include "../trace.h"
-#include "mt7615.h"
-#include "sdio.h"
-#include "mac.h"
-
-static int mt7663s_refill_sched_quota(struct mt76_dev *dev, u32 *data)
-{
- u32 ple_ac_data_quota[] = {
- FIELD_GET(TXQ_CNT_L, data[4]), /* VO */
- FIELD_GET(TXQ_CNT_H, data[3]), /* VI */
- FIELD_GET(TXQ_CNT_L, data[3]), /* BE */
- FIELD_GET(TXQ_CNT_H, data[2]), /* BK */
- };
- u32 pse_ac_data_quota[] = {
- FIELD_GET(TXQ_CNT_H, data[1]), /* VO */
- FIELD_GET(TXQ_CNT_L, data[1]), /* VI */
- FIELD_GET(TXQ_CNT_H, data[0]), /* BE */
- FIELD_GET(TXQ_CNT_L, data[0]), /* BK */
- };
- u32 pse_mcu_quota = FIELD_GET(TXQ_CNT_L, data[2]);
- u32 pse_data_quota = 0, ple_data_quota = 0;
- struct mt76_sdio *sdio = &dev->sdio;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(pse_ac_data_quota); i++) {
- pse_data_quota += pse_ac_data_quota[i];
- ple_data_quota += ple_ac_data_quota[i];
- }
-
- if (!pse_data_quota && !ple_data_quota && !pse_mcu_quota)
- return 0;
-
- sdio->sched.pse_mcu_quota += pse_mcu_quota;
- sdio->sched.pse_data_quota += pse_data_quota;
- sdio->sched.ple_data_quota += ple_data_quota;
-
- return pse_data_quota + ple_data_quota + pse_mcu_quota;
-}
-
-static struct sk_buff *mt7663s_build_rx_skb(void *data, int data_len,
- int buf_len)
-{
- int len = min_t(int, data_len, MT_SKB_HEAD_LEN);
- struct sk_buff *skb;
-
- skb = alloc_skb(len, GFP_KERNEL);
- if (!skb)
- return NULL;
-
- skb_put_data(skb, data, len);
- if (data_len > len) {
- struct page *page;
-
- data += len;
- page = virt_to_head_page(data);
- skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
- page, data - page_address(page),
- data_len - len, buf_len);
- get_page(page);
- }
-
- return skb;
-}
-
-static int mt7663s_rx_run_queue(struct mt76_dev *dev, enum mt76_rxq_id qid,
- struct mt76s_intr *intr)
-{
- struct mt76_queue *q = &dev->q_rx[qid];
- struct mt76_sdio *sdio = &dev->sdio;
- int len = 0, err, i;
- struct page *page;
- u8 *buf;
-
- for (i = 0; i < intr->rx.num[qid]; i++)
- len += round_up(intr->rx.len[qid][i] + 4, 4);
-
- if (!len)
- return 0;
-
- if (len > sdio->func->cur_blksize)
- len = roundup(len, sdio->func->cur_blksize);
-
- page = __dev_alloc_pages(GFP_KERNEL, get_order(len));
- if (!page)
- return -ENOMEM;
-
- buf = page_address(page);
-
- err = sdio_readsb(sdio->func, buf, MCR_WRDR(qid), len);
- if (err < 0) {
- dev_err(dev->dev, "sdio read data failed:%d\n", err);
- put_page(page);
- return err;
- }
-
- for (i = 0; i < intr->rx.num[qid]; i++) {
- int index = (q->head + i) % q->ndesc;
- struct mt76_queue_entry *e = &q->entry[index];
-
- len = intr->rx.len[qid][i];
- e->skb = mt7663s_build_rx_skb(buf, len, round_up(len + 4, 4));
- if (!e->skb)
- break;
-
- buf += round_up(len + 4, 4);
- if (q->queued + i + 1 == q->ndesc)
- break;
- }
- put_page(page);
-
- spin_lock_bh(&q->lock);
- q->head = (q->head + i) % q->ndesc;
- q->queued += i;
- spin_unlock_bh(&q->lock);
-
- return i;
-}
-
-static int mt7663s_rx_handler(struct mt76_dev *dev)
-{
- struct mt76_sdio *sdio = &dev->sdio;
- struct mt76s_intr *intr = sdio->intr_data;
- int nframes = 0, ret;
-
- ret = sdio_readsb(sdio->func, intr, MCR_WHISR, sizeof(*intr));
- if (ret < 0)
- return ret;
-
- trace_dev_irq(dev, intr->isr, 0);
-
- if (intr->isr & WHIER_RX0_DONE_INT_EN) {
- ret = mt7663s_rx_run_queue(dev, 0, intr);
- if (ret > 0) {
- mt76_worker_schedule(&sdio->net_worker);
- nframes += ret;
- }
- }
-
- if (intr->isr & WHIER_RX1_DONE_INT_EN) {
- ret = mt7663s_rx_run_queue(dev, 1, intr);
- if (ret > 0) {
- mt76_worker_schedule(&sdio->net_worker);
- nframes += ret;
- }
- }
-
- nframes += !!mt7663s_refill_sched_quota(dev, intr->tx.wtqcr);
-
- return nframes;
-}
-
-static int mt7663s_tx_pick_quota(struct mt76_sdio *sdio, bool mcu, int buf_sz,
- int *pse_size, int *ple_size)
-{
- int pse_sz;
-
- pse_sz = DIV_ROUND_UP(buf_sz + sdio->sched.deficit, MT_PSE_PAGE_SZ);
-
- if (mcu) {
- if (sdio->sched.pse_mcu_quota < *pse_size + pse_sz)
- return -EBUSY;
- } else {
- if (sdio->sched.pse_data_quota < *pse_size + pse_sz ||
- sdio->sched.ple_data_quota < *ple_size + 1)
- return -EBUSY;
-
- *ple_size = *ple_size + 1;
- }
- *pse_size = *pse_size + pse_sz;
-
- return 0;
-}
-
-static void mt7663s_tx_update_quota(struct mt76_sdio *sdio, bool mcu,
- int pse_size, int ple_size)
-{
- if (mcu) {
- sdio->sched.pse_mcu_quota -= pse_size;
- } else {
- sdio->sched.pse_data_quota -= pse_size;
- sdio->sched.ple_data_quota -= ple_size;
- }
-}
-
-static int __mt7663s_xmit_queue(struct mt76_dev *dev, u8 *data, int len)
-{
- struct mt76_sdio *sdio = &dev->sdio;
- int err;
-
- if (len > sdio->func->cur_blksize)
- len = roundup(len, sdio->func->cur_blksize);
-
- err = sdio_writesb(sdio->func, MCR_WTDR1, data, len);
- if (err)
- dev_err(dev->dev, "sdio write failed: %d\n", err);
-
- return err;
-}
-
-static int mt7663s_tx_run_queue(struct mt76_dev *dev, struct mt76_queue *q)
-{
- int qid, err, nframes = 0, len = 0, pse_sz = 0, ple_sz = 0;
- bool mcu = q == dev->q_mcu[MT_MCUQ_WM];
- struct mt76_sdio *sdio = &dev->sdio;
- u8 pad;
-
- qid = mcu ? ARRAY_SIZE(sdio->xmit_buf) - 1 : q->qid;
- while (q->first != q->head) {
- struct mt76_queue_entry *e = &q->entry[q->first];
- struct sk_buff *iter;
-
- smp_rmb();
-
- if (!test_bit(MT76_STATE_MCU_RUNNING, &dev->phy.state)) {
- __skb_put_zero(e->skb, 4);
- err = __mt7663s_xmit_queue(dev, e->skb->data,
- e->skb->len);
- if (err)
- return err;
-
- goto next;
- }
-
- pad = roundup(e->skb->len, 4) - e->skb->len;
- if (len + e->skb->len + pad + 4 > MT76S_XMIT_BUF_SZ)
- break;
-
- if (mt7663s_tx_pick_quota(sdio, mcu, e->buf_sz, &pse_sz,
- &ple_sz))
- break;
-
- memcpy(sdio->xmit_buf[qid] + len, e->skb->data,
- skb_headlen(e->skb));
- len += skb_headlen(e->skb);
- nframes++;
-
- skb_walk_frags(e->skb, iter) {
- memcpy(sdio->xmit_buf[qid] + len, iter->data,
- iter->len);
- len += iter->len;
- nframes++;
- }
-
- if (unlikely(pad)) {
- memset(sdio->xmit_buf[qid] + len, 0, pad);
- len += pad;
- }
-next:
- q->first = (q->first + 1) % q->ndesc;
- e->done = true;
- }
-
- if (nframes) {
- memset(sdio->xmit_buf[qid] + len, 0, 4);
- err = __mt7663s_xmit_queue(dev, sdio->xmit_buf[qid], len + 4);
- if (err)
- return err;
- }
- mt7663s_tx_update_quota(sdio, mcu, pse_sz, ple_sz);
-
- mt76_worker_schedule(&sdio->status_worker);
-
- return nframes;
-}
-
-void mt7663s_txrx_worker(struct mt76_worker *w)
-{
- struct mt76_sdio *sdio = container_of(w, struct mt76_sdio,
- txrx_worker);
- struct mt76_dev *mdev = container_of(sdio, struct mt76_dev, sdio);
- struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
- int i, nframes, ret;
-
- if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
- queue_work(mdev->wq, &dev->pm.wake_work);
- return;
- }
-
- /* disable interrupt */
- sdio_claim_host(sdio->func);
- sdio_writel(sdio->func, WHLPCR_INT_EN_CLR, MCR_WHLPCR, NULL);
-
- do {
- nframes = 0;
-
- /* tx */
- for (i = 0; i <= MT_TXQ_PSD; i++) {
- ret = mt7663s_tx_run_queue(mdev, mdev->phy.q_tx[i]);
- if (ret > 0)
- nframes += ret;
- }
- ret = mt7663s_tx_run_queue(mdev, mdev->q_mcu[MT_MCUQ_WM]);
- if (ret > 0)
- nframes += ret;
-
- /* rx */
- ret = mt7663s_rx_handler(mdev);
- if (ret > 0)
- nframes += ret;
- } while (nframes > 0);
-
- /* enable interrupt */
- sdio_writel(sdio->func, WHLPCR_INT_EN_SET, MCR_WHLPCR, NULL);
- sdio_release_host(sdio->func);
-
- mt76_connac_pm_unref(&dev->mphy, &dev->pm);
-}
-
-void mt7663s_sdio_irq(struct sdio_func *func)
-{
- struct mt7615_dev *dev = sdio_get_drvdata(func);
- struct mt76_sdio *sdio = &dev->mt76.sdio;
-
- if (!test_bit(MT76_STATE_INITIALIZED, &dev->mt76.phy.state))
- return;
-
- mt76_worker_schedule(&sdio->txrx_worker);
-}
diff --git a/drivers/net/wireless/mediatek/mt76/sdio.c b/drivers/net/wireless/mediatek/mt76/sdio.c
index f7a1838b4576..7e613462b60e 100644
--- a/drivers/net/wireless/mediatek/mt76/sdio.c
+++ b/drivers/net/wireless/mediatek/mt76/sdio.c
@@ -16,6 +16,271 @@
#include <linux/kthread.h>
#include "mt76.h"
+#include "sdio.h"
+
+static u32 mt76s_read_whisr(struct mt76_dev *dev)
+{
+ return sdio_readl(dev->sdio.func, MCR_WHISR, NULL);
+}
+
+u32 mt76s_read_pcr(struct mt76_dev *dev)
+{
+ struct mt76_sdio *sdio = &dev->sdio;
+
+ return sdio_readl(sdio->func, MCR_WHLPCR, NULL);
+}
+EXPORT_SYMBOL_GPL(mt76s_read_pcr);
+
+static u32 mt76s_read_mailbox(struct mt76_dev *dev, u32 offset)
+{
+ struct sdio_func *func = dev->sdio.func;
+ u32 val = ~0, status;
+ int err;
+
+ sdio_claim_host(func);
+
+ sdio_writel(func, offset, MCR_H2DSM0R, &err);
+ if (err < 0) {
+ dev_err(dev->dev, "failed setting address [err=%d]\n", err);
+ goto out;
+ }
+
+ sdio_writel(func, H2D_SW_INT_READ, MCR_WSICR, &err);
+ if (err < 0) {
+ dev_err(dev->dev, "failed setting read mode [err=%d]\n", err);
+ goto out;
+ }
+
+ err = readx_poll_timeout(mt76s_read_whisr, dev, status,
+ status & H2D_SW_INT_READ, 0, 1000000);
+ if (err < 0) {
+ dev_err(dev->dev, "query whisr timeout\n");
+ goto out;
+ }
+
+ sdio_writel(func, H2D_SW_INT_READ, MCR_WHISR, &err);
+ if (err < 0) {
+ dev_err(dev->dev, "failed setting read mode [err=%d]\n", err);
+ goto out;
+ }
+
+ val = sdio_readl(func, MCR_H2DSM0R, &err);
+ if (err < 0) {
+ dev_err(dev->dev, "failed reading h2dsm0r [err=%d]\n", err);
+ goto out;
+ }
+
+ if (val != offset) {
+ dev_err(dev->dev, "register mismatch\n");
+ val = ~0;
+ goto out;
+ }
+
+ val = sdio_readl(func, MCR_D2HRM1R, &err);
+ if (err < 0)
+ dev_err(dev->dev, "failed reading d2hrm1r [err=%d]\n", err);
+
+out:
+ sdio_release_host(func);
+
+ return val;
+}
+
+static void mt76s_write_mailbox(struct mt76_dev *dev, u32 offset, u32 val)
+{
+ struct sdio_func *func = dev->sdio.func;
+ u32 status;
+ int err;
+
+ sdio_claim_host(func);
+
+ sdio_writel(func, offset, MCR_H2DSM0R, &err);
+ if (err < 0) {
+ dev_err(dev->dev, "failed setting address [err=%d]\n", err);
+ goto out;
+ }
+
+ sdio_writel(func, val, MCR_H2DSM1R, &err);
+ if (err < 0) {
+ dev_err(dev->dev,
+ "failed setting write value [err=%d]\n", err);
+ goto out;
+ }
+
+ sdio_writel(func, H2D_SW_INT_WRITE, MCR_WSICR, &err);
+ if (err < 0) {
+ dev_err(dev->dev, "failed setting write mode [err=%d]\n", err);
+ goto out;
+ }
+
+ err = readx_poll_timeout(mt76s_read_whisr, dev, status,
+ status & H2D_SW_INT_WRITE, 0, 1000000);
+ if (err < 0) {
+ dev_err(dev->dev, "query whisr timeout\n");
+ goto out;
+ }
+
+ sdio_writel(func, H2D_SW_INT_WRITE, MCR_WHISR, &err);
+ if (err < 0) {
+ dev_err(dev->dev, "failed setting write mode [err=%d]\n", err);
+ goto out;
+ }
+
+ val = sdio_readl(func, MCR_H2DSM0R, &err);
+ if (err < 0) {
+ dev_err(dev->dev, "failed reading h2dsm0r [err=%d]\n", err);
+ goto out;
+ }
+
+ if (val != offset)
+ dev_err(dev->dev, "register mismatch\n");
+
+out:
+ sdio_release_host(func);
+}
+
+u32 mt76s_rr(struct mt76_dev *dev, u32 offset)
+{
+ if (test_bit(MT76_STATE_MCU_RUNNING, &dev->phy.state))
+ return dev->mcu_ops->mcu_rr(dev, offset);
+ else
+ return mt76s_read_mailbox(dev, offset);
+}
+EXPORT_SYMBOL_GPL(mt76s_rr);
+
+void mt76s_wr(struct mt76_dev *dev, u32 offset, u32 val)
+{
+ if (test_bit(MT76_STATE_MCU_RUNNING, &dev->phy.state))
+ dev->mcu_ops->mcu_wr(dev, offset, val);
+ else
+ mt76s_write_mailbox(dev, offset, val);
+}
+EXPORT_SYMBOL_GPL(mt76s_wr);
+
+u32 mt76s_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val)
+{
+ val |= mt76s_rr(dev, offset) & ~mask;
+ mt76s_wr(dev, offset, val);
+
+ return val;
+}
+EXPORT_SYMBOL_GPL(mt76s_rmw);
+
+void mt76s_write_copy(struct mt76_dev *dev, u32 offset,
+ const void *data, int len)
+{
+ const u32 *val = data;
+ int i;
+
+ for (i = 0; i < len / sizeof(u32); i++) {
+ mt76s_wr(dev, offset, val[i]);
+ offset += sizeof(u32);
+ }
+}
+EXPORT_SYMBOL_GPL(mt76s_write_copy);
+
+void mt76s_read_copy(struct mt76_dev *dev, u32 offset,
+ void *data, int len)
+{
+ u32 *val = data;
+ int i;
+
+ for (i = 0; i < len / sizeof(u32); i++) {
+ val[i] = mt76s_rr(dev, offset);
+ offset += sizeof(u32);
+ }
+}
+EXPORT_SYMBOL_GPL(mt76s_read_copy);
+
+int mt76s_wr_rp(struct mt76_dev *dev, u32 base,
+ const struct mt76_reg_pair *data,
+ int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++) {
+ mt76s_wr(dev, data->reg, data->value);
+ data++;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mt76s_wr_rp);
+
+int mt76s_rd_rp(struct mt76_dev *dev, u32 base,
+ struct mt76_reg_pair *data, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++) {
+ data->value = mt76s_rr(dev, data->reg);
+ data++;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mt76s_rd_rp);
+
+int mt76s_hw_init(struct mt76_dev *dev, struct sdio_func *func)
+{
+ u32 status, ctrl;
+ int ret;
+
+ sdio_claim_host(func);
+
+ ret = sdio_enable_func(func);
+ if (ret < 0)
+ goto release;
+
+ /* Get ownership from the device */
+ sdio_writel(func, WHLPCR_INT_EN_CLR | WHLPCR_FW_OWN_REQ_CLR,
+ MCR_WHLPCR, &ret);
+ if (ret < 0)
+ goto disable_func;
+
+ ret = readx_poll_timeout(mt76s_read_pcr, dev, status,
+ status & WHLPCR_IS_DRIVER_OWN, 2000, 1000000);
+ if (ret < 0) {
+ dev_err(dev->dev, "Cannot get ownership from device");
+ goto disable_func;
+ }
+
+ ret = sdio_set_block_size(func, 512);
+ if (ret < 0)
+ goto disable_func;
+
+ /* Enable interrupt */
+ sdio_writel(func, WHLPCR_INT_EN_SET, MCR_WHLPCR, &ret);
+ if (ret < 0)
+ goto disable_func;
+
+ ctrl = WHIER_RX0_DONE_INT_EN | WHIER_TX_DONE_INT_EN;
+ sdio_writel(func, ctrl, MCR_WHIER, &ret);
+ if (ret < 0)
+ goto disable_func;
+
+ /* set WHISR as read clear and Rx aggregation number as 16 */
+ ctrl = FIELD_PREP(MAX_HIF_RX_LEN_NUM, 16);
+ sdio_writel(func, ctrl, MCR_WHCR, &ret);
+ if (ret < 0)
+ goto disable_func;
+
+ ret = sdio_claim_irq(func, mt76s_sdio_irq);
+ if (ret < 0)
+ goto disable_func;
+
+ sdio_release_host(func);
+
+ return 0;
+
+disable_func:
+ sdio_disable_func(func);
+release:
+ sdio_release_host(func);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(mt76s_hw_init);
int mt76s_alloc_rx_queue(struct mt76_dev *dev, enum mt76_rxq_id qid)
{
diff --git a/drivers/net/wireless/mediatek/mt76/sdio.h b/drivers/net/wireless/mediatek/mt76/sdio.h
new file mode 100644
index 000000000000..03877d89e152
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/sdio.h
@@ -0,0 +1,115 @@
+/* SPDX-License-Identifier: ISC */
+/* Copyright (C) 2020 MediaTek Inc.
+ *
+ * Author: Sean Wang <sean.wang@mediatek.com>
+ */
+
+#ifndef __MT76S_H
+#define __MT76S_H
+
+#define MT_PSE_PAGE_SZ 128
+
+#define MCR_WCIR 0x0000
+#define MCR_WHLPCR 0x0004
+#define WHLPCR_FW_OWN_REQ_CLR BIT(9)
+#define WHLPCR_FW_OWN_REQ_SET BIT(8)
+#define WHLPCR_IS_DRIVER_OWN BIT(8)
+#define WHLPCR_INT_EN_CLR BIT(1)
+#define WHLPCR_INT_EN_SET BIT(0)
+
+#define MCR_WSDIOCSR 0x0008
+#define MCR_WHCR 0x000C
+#define W_INT_CLR_CTRL BIT(1)
+#define RECV_MAILBOX_RD_CLR_EN BIT(2)
+#define MAX_HIF_RX_LEN_NUM GENMASK(13, 8)
+#define RX_ENHANCE_MODE BIT(16)
+
+#define MCR_WHISR 0x0010
+#define MCR_WHIER 0x0014
+#define WHIER_D2H_SW_INT GENMASK(31, 8)
+#define WHIER_FW_OWN_BACK_INT_EN BIT(7)
+#define WHIER_ABNORMAL_INT_EN BIT(6)
+#define WHIER_RX1_DONE_INT_EN BIT(2)
+#define WHIER_RX0_DONE_INT_EN BIT(1)
+#define WHIER_TX_DONE_INT_EN BIT(0)
+#define WHIER_DEFAULT (WHIER_RX0_DONE_INT_EN | \
+ WHIER_RX1_DONE_INT_EN | \
+ WHIER_TX_DONE_INT_EN | \
+ WHIER_ABNORMAL_INT_EN | \
+ WHIER_D2H_SW_INT)
+
+#define MCR_WASR 0x0020
+#define MCR_WSICR 0x0024
+#define MCR_WTSR0 0x0028
+#define TQ0_CNT GENMASK(7, 0)
+#define TQ1_CNT GENMASK(15, 8)
+#define TQ2_CNT GENMASK(23, 16)
+#define TQ3_CNT GENMASK(31, 24)
+
+#define MCR_WTSR1 0x002c
+#define TQ4_CNT GENMASK(7, 0)
+#define TQ5_CNT GENMASK(15, 8)
+#define TQ6_CNT GENMASK(23, 16)
+#define TQ7_CNT GENMASK(31, 24)
+
+#define MCR_WTDR1 0x0034
+#define MCR_WRDR0 0x0050
+#define MCR_WRDR1 0x0054
+#define MCR_WRDR(p) (0x0050 + 4 * (p))
+#define MCR_H2DSM0R 0x0070
+#define H2D_SW_INT_READ BIT(16)
+#define H2D_SW_INT_WRITE BIT(17)
+
+#define MCR_H2DSM1R 0x0074
+#define MCR_D2HRM0R 0x0078
+#define MCR_D2HRM1R 0x007c
+#define MCR_D2HRM2R 0x0080
+#define MCR_WRPLR 0x0090
+#define RX0_PACKET_LENGTH GENMASK(15, 0)
+#define RX1_PACKET_LENGTH GENMASK(31, 16)
+
+#define MCR_WTMDR 0x00b0
+#define MCR_WTMCR 0x00b4
+#define MCR_WTMDPCR0 0x00b8
+#define MCR_WTMDPCR1 0x00bc
+#define MCR_WPLRCR 0x00d4
+#define MCR_WSR 0x00D8
+#define MCR_CLKIOCR 0x0100
+#define MCR_CMDIOCR 0x0104
+#define MCR_DAT0IOCR 0x0108
+#define MCR_DAT1IOCR 0x010C
+#define MCR_DAT2IOCR 0x0110
+#define MCR_DAT3IOCR 0x0114
+#define MCR_CLKDLYCR 0x0118
+#define MCR_CMDDLYCR 0x011C
+#define MCR_ODATDLYCR 0x0120
+#define MCR_IDATDLYCR1 0x0124
+#define MCR_IDATDLYCR2 0x0128
+#define MCR_ILCHCR 0x012C
+#define MCR_WTQCR0 0x0130
+#define MCR_WTQCR1 0x0134
+#define MCR_WTQCR2 0x0138
+#define MCR_WTQCR3 0x013C
+#define MCR_WTQCR4 0x0140
+#define MCR_WTQCR5 0x0144
+#define MCR_WTQCR6 0x0148
+#define MCR_WTQCR7 0x014C
+#define MCR_WTQCR(x) (0x130 + 4 * (x))
+#define TXQ_CNT_L GENMASK(15, 0)
+#define TXQ_CNT_H GENMASK(31, 16)
+
+#define MCR_SWPCDBGR 0x0154
+
+struct mt76s_intr {
+ u32 isr;
+ struct {
+ u32 wtqcr[8];
+ } tx;
+ struct {
+ u16 num[2];
+ u16 len[2][16];
+ } rx;
+ u32 rec_mb[2];
+} __packed;
+
+#endif
diff --git a/drivers/net/wireless/mediatek/mt76/sdio_txrx.c b/drivers/net/wireless/mediatek/mt76/sdio_txrx.c
new file mode 100644
index 000000000000..ceb3dc0613d6
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/sdio_txrx.c
@@ -0,0 +1,328 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2020 MediaTek Inc.
+ *
+ * Author: Felix Fietkau <nbd@nbd.name>
+ * Lorenzo Bianconi <lorenzo@kernel.org>
+ * Sean Wang <sean.wang@mediatek.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+
+#include <linux/mmc/host.h>
+#include <linux/mmc/sdio_ids.h>
+#include <linux/mmc/sdio_func.h>
+
+#include "trace.h"
+#include "sdio.h"
+#include "mt76.h"
+
+static int mt76s_refill_sched_quota(struct mt76_dev *dev, u32 *data)
+{
+ u32 ple_ac_data_quota[] = {
+ FIELD_GET(TXQ_CNT_L, data[4]), /* VO */
+ FIELD_GET(TXQ_CNT_H, data[3]), /* VI */
+ FIELD_GET(TXQ_CNT_L, data[3]), /* BE */
+ FIELD_GET(TXQ_CNT_H, data[2]), /* BK */
+ };
+ u32 pse_ac_data_quota[] = {
+ FIELD_GET(TXQ_CNT_H, data[1]), /* VO */
+ FIELD_GET(TXQ_CNT_L, data[1]), /* VI */
+ FIELD_GET(TXQ_CNT_H, data[0]), /* BE */
+ FIELD_GET(TXQ_CNT_L, data[0]), /* BK */
+ };
+ u32 pse_mcu_quota = FIELD_GET(TXQ_CNT_L, data[2]);
+ u32 pse_data_quota = 0, ple_data_quota = 0;
+ struct mt76_sdio *sdio = &dev->sdio;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(pse_ac_data_quota); i++) {
+ pse_data_quota += pse_ac_data_quota[i];
+ ple_data_quota += ple_ac_data_quota[i];
+ }
+
+ if (!pse_data_quota && !ple_data_quota && !pse_mcu_quota)
+ return 0;
+
+ sdio->sched.pse_mcu_quota += pse_mcu_quota;
+ sdio->sched.pse_data_quota += pse_data_quota;
+ sdio->sched.ple_data_quota += ple_data_quota;
+
+ return pse_data_quota + ple_data_quota + pse_mcu_quota;
+}
+
+static struct sk_buff *
+mt76s_build_rx_skb(void *data, int data_len, int buf_len)
+{
+ int len = min_t(int, data_len, MT_SKB_HEAD_LEN);
+ struct sk_buff *skb;
+
+ skb = alloc_skb(len, GFP_KERNEL);
+ if (!skb)
+ return NULL;
+
+ skb_put_data(skb, data, len);
+ if (data_len > len) {
+ struct page *page;
+
+ data += len;
+ page = virt_to_head_page(data);
+ skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
+ page, data - page_address(page),
+ data_len - len, buf_len);
+ get_page(page);
+ }
+
+ return skb;
+}
+
+static int
+mt76s_rx_run_queue(struct mt76_dev *dev, enum mt76_rxq_id qid,
+ struct mt76s_intr *intr)
+{
+ struct mt76_queue *q = &dev->q_rx[qid];
+ struct mt76_sdio *sdio = &dev->sdio;
+ int len = 0, err, i;
+ struct page *page;
+ u8 *buf;
+
+ for (i = 0; i < intr->rx.num[qid]; i++)
+ len += round_up(intr->rx.len[qid][i] + 4, 4);
+
+ if (!len)
+ return 0;
+
+ if (len > sdio->func->cur_blksize)
+ len = roundup(len, sdio->func->cur_blksize);
+
+ page = __dev_alloc_pages(GFP_KERNEL, get_order(len));
+ if (!page)
+ return -ENOMEM;
+
+ buf = page_address(page);
+
+ err = sdio_readsb(sdio->func, buf, MCR_WRDR(qid), len);
+ if (err < 0) {
+ dev_err(dev->dev, "sdio read data failed:%d\n", err);
+ put_page(page);
+ return err;
+ }
+
+ for (i = 0; i < intr->rx.num[qid]; i++) {
+ int index = (q->head + i) % q->ndesc;
+ struct mt76_queue_entry *e = &q->entry[index];
+
+ len = intr->rx.len[qid][i];
+ e->skb = mt76s_build_rx_skb(buf, len, round_up(len + 4, 4));
+ if (!e->skb)
+ break;
+
+ buf += round_up(len + 4, 4);
+ if (q->queued + i + 1 == q->ndesc)
+ break;
+ }
+ put_page(page);
+
+ spin_lock_bh(&q->lock);
+ q->head = (q->head + i) % q->ndesc;
+ q->queued += i;
+ spin_unlock_bh(&q->lock);
+
+ return i;
+}
+
+static int mt76s_rx_handler(struct mt76_dev *dev)
+{
+ struct mt76_sdio *sdio = &dev->sdio;
+ struct mt76s_intr *intr = sdio->intr_data;
+ int nframes = 0, ret;
+
+ ret = sdio_readsb(sdio->func, intr, MCR_WHISR, sizeof(*intr));
+ if (ret < 0)
+ return ret;
+
+ trace_dev_irq(dev, intr->isr, 0);
+
+ if (intr->isr & WHIER_RX0_DONE_INT_EN) {
+ ret = mt76s_rx_run_queue(dev, 0, intr);
+ if (ret > 0) {
+ mt76_worker_schedule(&sdio->net_worker);
+ nframes += ret;
+ }
+ }
+
+ if (intr->isr & WHIER_RX1_DONE_INT_EN) {
+ ret = mt76s_rx_run_queue(dev, 1, intr);
+ if (ret > 0) {
+ mt76_worker_schedule(&sdio->net_worker);
+ nframes += ret;
+ }
+ }
+
+ nframes += !!mt76s_refill_sched_quota(dev, intr->tx.wtqcr);
+
+ return nframes;
+}
+
+static int
+mt76s_tx_pick_quota(struct mt76_sdio *sdio, bool mcu, int buf_sz,
+ int *pse_size, int *ple_size)
+{
+ int pse_sz;
+
+ pse_sz = DIV_ROUND_UP(buf_sz + sdio->sched.deficit, MT_PSE_PAGE_SZ);
+
+ if (mcu) {
+ if (sdio->sched.pse_mcu_quota < *pse_size + pse_sz)
+ return -EBUSY;
+ } else {
+ if (sdio->sched.pse_data_quota < *pse_size + pse_sz ||
+ sdio->sched.ple_data_quota < *ple_size + 1)
+ return -EBUSY;
+
+ *ple_size = *ple_size + 1;
+ }
+ *pse_size = *pse_size + pse_sz;
+
+ return 0;
+}
+
+static void
+mt76s_tx_update_quota(struct mt76_sdio *sdio, bool mcu, int pse_size,
+ int ple_size)
+{
+ if (mcu) {
+ sdio->sched.pse_mcu_quota -= pse_size;
+ } else {
+ sdio->sched.pse_data_quota -= pse_size;
+ sdio->sched.ple_data_quota -= ple_size;
+ }
+}
+
+static int __mt76s_xmit_queue(struct mt76_dev *dev, u8 *data, int len)
+{
+ struct mt76_sdio *sdio = &dev->sdio;
+ int err;
+
+ if (len > sdio->func->cur_blksize)
+ len = roundup(len, sdio->func->cur_blksize);
+
+ err = sdio_writesb(sdio->func, MCR_WTDR1, data, len);
+ if (err)
+ dev_err(dev->dev, "sdio write failed: %d\n", err);
+
+ return err;
+}
+
+static int mt76s_tx_run_queue(struct mt76_dev *dev, struct mt76_queue *q)
+{
+ int qid, err, nframes = 0, len = 0, pse_sz = 0, ple_sz = 0;
+ bool mcu = q == dev->q_mcu[MT_MCUQ_WM];
+ struct mt76_sdio *sdio = &dev->sdio;
+ u8 pad;
+
+ qid = mcu ? ARRAY_SIZE(sdio->xmit_buf) - 1 : q->qid;
+ while (q->first != q->head) {
+ struct mt76_queue_entry *e = &q->entry[q->first];
+ struct sk_buff *iter;
+
+ smp_rmb();
+
+ if (!test_bit(MT76_STATE_MCU_RUNNING, &dev->phy.state)) {
+ __skb_put_zero(e->skb, 4);
+ err = __mt76s_xmit_queue(dev, e->skb->data,
+ e->skb->len);
+ if (err)
+ return err;
+
+ goto next;
+ }
+
+ pad = roundup(e->skb->len, 4) - e->skb->len;
+ if (len + e->skb->len + pad + 4 > MT76S_XMIT_BUF_SZ)
+ break;
+
+ if (mt76s_tx_pick_quota(sdio, mcu, e->buf_sz, &pse_sz,
+ &ple_sz))
+ break;
+
+ memcpy(sdio->xmit_buf[qid] + len, e->skb->data,
+ skb_headlen(e->skb));
+ len += skb_headlen(e->skb);
+ nframes++;
+
+ skb_walk_frags(e->skb, iter) {
+ memcpy(sdio->xmit_buf[qid] + len, iter->data,
+ iter->len);
+ len += iter->len;
+ nframes++;
+ }
+
+ if (unlikely(pad)) {
+ memset(sdio->xmit_buf[qid] + len, 0, pad);
+ len += pad;
+ }
+next:
+ q->first = (q->first + 1) % q->ndesc;
+ e->done = true;
+ }
+
+ if (nframes) {
+ memset(sdio->xmit_buf[qid] + len, 0, 4);
+ err = __mt76s_xmit_queue(dev, sdio->xmit_buf[qid], len + 4);
+ if (err)
+ return err;
+ }
+ mt76s_tx_update_quota(sdio, mcu, pse_sz, ple_sz);
+
+ mt76_worker_schedule(&sdio->status_worker);
+
+ return nframes;
+}
+
+void mt76s_txrx_worker(struct mt76_sdio *sdio)
+{
+ struct mt76_dev *dev = container_of(sdio, struct mt76_dev, sdio);
+ int i, nframes, ret;
+
+ /* disable interrupt */
+ sdio_claim_host(sdio->func);
+ sdio_writel(sdio->func, WHLPCR_INT_EN_CLR, MCR_WHLPCR, NULL);
+
+ do {
+ nframes = 0;
+
+ /* tx */
+ for (i = 0; i <= MT_TXQ_PSD; i++) {
+ ret = mt76s_tx_run_queue(dev, dev->phy.q_tx[i]);
+ if (ret > 0)
+ nframes += ret;
+ }
+ ret = mt76s_tx_run_queue(dev, dev->q_mcu[MT_MCUQ_WM]);
+ if (ret > 0)
+ nframes += ret;
+
+ /* rx */
+ ret = mt76s_rx_handler(dev);
+ if (ret > 0)
+ nframes += ret;
+ } while (nframes > 0);
+
+ /* enable interrupt */
+ sdio_writel(sdio->func, WHLPCR_INT_EN_SET, MCR_WHLPCR, NULL);
+ sdio_release_host(sdio->func);
+}
+EXPORT_SYMBOL_GPL(mt76s_txrx_worker);
+
+void mt76s_sdio_irq(struct sdio_func *func)
+{
+ struct mt76_dev *dev = sdio_get_drvdata(func);
+ struct mt76_sdio *sdio = &dev->sdio;
+
+ if (!test_bit(MT76_STATE_INITIALIZED, &dev->phy.state))
+ return;
+
+ mt76_worker_schedule(&sdio->txrx_worker);
+}
+EXPORT_SYMBOL_GPL(mt76s_sdio_irq);
--
2.35.3