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linux-zen-server/drivers/net/ethernet/mediatek/mtk_wed.c

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Initial commit
2023-08-30 17:53:23 +02:00
// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (C) 2021 Felix Fietkau <nbd@nbd.name> */
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/bitfield.h>
#include <linux/dma-mapping.h>
#include <linux/skbuff.h>
#include <linux/of_platform.h>
#include <linux/of_address.h>
#include <linux/of_reserved_mem.h>
#include <linux/mfd/syscon.h>
#include <linux/debugfs.h>
#include <linux/soc/mediatek/mtk_wed.h>
#include "mtk_eth_soc.h"
#include "mtk_wed_regs.h"
#include "mtk_wed.h"
#include "mtk_ppe.h"
#include "mtk_wed_wo.h"
#define MTK_PCIE_BASE(n) (0x1a143000 + (n) * 0x2000)
#define MTK_WED_PKT_SIZE 1900
#define MTK_WED_BUF_SIZE 2048
#define MTK_WED_BUF_PER_PAGE (PAGE_SIZE / 2048)
#define MTK_WED_RX_RING_SIZE 1536
#define MTK_WED_TX_RING_SIZE 2048
#define MTK_WED_WDMA_RING_SIZE 1024
#define MTK_WED_MAX_GROUP_SIZE 0x100
#define MTK_WED_VLD_GROUP_SIZE 0x40
#define MTK_WED_PER_GROUP_PKT 128
#define MTK_WED_FBUF_SIZE 128
#define MTK_WED_MIOD_CNT 16
#define MTK_WED_FB_CMD_CNT 1024
#define MTK_WED_RRO_QUE_CNT 8192
#define MTK_WED_MIOD_ENTRY_CNT 128
static struct mtk_wed_hw *hw_list[2];
static DEFINE_MUTEX(hw_lock);
static void
wed_m32(struct mtk_wed_device *dev, u32 reg, u32 mask, u32 val)
{
regmap_update_bits(dev->hw->regs, reg, mask | val, val);
}
static void
wed_set(struct mtk_wed_device *dev, u32 reg, u32 mask)
{
return wed_m32(dev, reg, 0, mask);
}
static void
wed_clr(struct mtk_wed_device *dev, u32 reg, u32 mask)
{
return wed_m32(dev, reg, mask, 0);
}
static void
wdma_m32(struct mtk_wed_device *dev, u32 reg, u32 mask, u32 val)
{
wdma_w32(dev, reg, (wdma_r32(dev, reg) & ~mask) | val);
}
static void
wdma_set(struct mtk_wed_device *dev, u32 reg, u32 mask)
{
wdma_m32(dev, reg, 0, mask);
}
static void
wdma_clr(struct mtk_wed_device *dev, u32 reg, u32 mask)
{
wdma_m32(dev, reg, mask, 0);
}
static u32
wifi_r32(struct mtk_wed_device *dev, u32 reg)
{
return readl(dev->wlan.base + reg);
}
static void
wifi_w32(struct mtk_wed_device *dev, u32 reg, u32 val)
{
writel(val, dev->wlan.base + reg);
}
static u32
mtk_wed_read_reset(struct mtk_wed_device *dev)
{
return wed_r32(dev, MTK_WED_RESET);
}
static u32
mtk_wdma_read_reset(struct mtk_wed_device *dev)
{
return wdma_r32(dev, MTK_WDMA_GLO_CFG);
}
static int
mtk_wdma_rx_reset(struct mtk_wed_device *dev)
{
u32 status, mask = MTK_WDMA_GLO_CFG_RX_DMA_BUSY;
int i, ret;
wdma_clr(dev, MTK_WDMA_GLO_CFG, MTK_WDMA_GLO_CFG_RX_DMA_EN);
ret = readx_poll_timeout(mtk_wdma_read_reset, dev, status,
!(status & mask), 0, 10000);
if (ret)
dev_err(dev->hw->dev, "rx reset failed\n");
wdma_w32(dev, MTK_WDMA_RESET_IDX, MTK_WDMA_RESET_IDX_RX);
wdma_w32(dev, MTK_WDMA_RESET_IDX, 0);
for (i = 0; i < ARRAY_SIZE(dev->rx_wdma); i++) {
if (dev->rx_wdma[i].desc)
continue;
wdma_w32(dev,
MTK_WDMA_RING_RX(i) + MTK_WED_RING_OFS_CPU_IDX, 0);
}
return ret;
}
static void
mtk_wdma_tx_reset(struct mtk_wed_device *dev)
{
u32 status, mask = MTK_WDMA_GLO_CFG_TX_DMA_BUSY;
int i;
wdma_clr(dev, MTK_WDMA_GLO_CFG, MTK_WDMA_GLO_CFG_TX_DMA_EN);
if (readx_poll_timeout(mtk_wdma_read_reset, dev, status,
!(status & mask), 0, 10000))
dev_err(dev->hw->dev, "tx reset failed\n");
wdma_w32(dev, MTK_WDMA_RESET_IDX, MTK_WDMA_RESET_IDX_TX);
wdma_w32(dev, MTK_WDMA_RESET_IDX, 0);
for (i = 0; i < ARRAY_SIZE(dev->tx_wdma); i++)
wdma_w32(dev,
MTK_WDMA_RING_TX(i) + MTK_WED_RING_OFS_CPU_IDX, 0);
}
static void
mtk_wed_reset(struct mtk_wed_device *dev, u32 mask)
{
u32 status;
wed_w32(dev, MTK_WED_RESET, mask);
if (readx_poll_timeout(mtk_wed_read_reset, dev, status,
!(status & mask), 0, 1000))
WARN_ON_ONCE(1);
}
static u32
mtk_wed_wo_read_status(struct mtk_wed_device *dev)
{
return wed_r32(dev, MTK_WED_SCR0 + 4 * MTK_WED_DUMMY_CR_WO_STATUS);
}
static void
mtk_wed_wo_reset(struct mtk_wed_device *dev)
{
struct mtk_wed_wo *wo = dev->hw->wed_wo;
u8 state = MTK_WED_WO_STATE_DISABLE;
void __iomem *reg;
u32 val;
mtk_wdma_tx_reset(dev);
mtk_wed_reset(dev, MTK_WED_RESET_WED);
if (mtk_wed_mcu_send_msg(wo, MTK_WED_MODULE_ID_WO,
MTK_WED_WO_CMD_CHANGE_STATE, &state,
sizeof(state), false))
return;
if (readx_poll_timeout(mtk_wed_wo_read_status, dev, val,
val == MTK_WED_WOIF_DISABLE_DONE,
100, MTK_WOCPU_TIMEOUT))
dev_err(dev->hw->dev, "failed to disable wed-wo\n");
reg = ioremap(MTK_WED_WO_CPU_MCUSYS_RESET_ADDR, 4);
val = readl(reg);
switch (dev->hw->index) {
case 0:
val |= MTK_WED_WO_CPU_WO0_MCUSYS_RESET_MASK;
writel(val, reg);
val &= ~MTK_WED_WO_CPU_WO0_MCUSYS_RESET_MASK;
writel(val, reg);
break;
case 1:
val |= MTK_WED_WO_CPU_WO1_MCUSYS_RESET_MASK;
writel(val, reg);
val &= ~MTK_WED_WO_CPU_WO1_MCUSYS_RESET_MASK;
writel(val, reg);
break;
default:
break;
}
iounmap(reg);
}
void mtk_wed_fe_reset(void)
{
int i;
mutex_lock(&hw_lock);
for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
struct mtk_wed_hw *hw = hw_list[i];
struct mtk_wed_device *dev = hw->wed_dev;
int err;
if (!dev || !dev->wlan.reset)
continue;
/* reset callback blocks until WLAN reset is completed */
err = dev->wlan.reset(dev);
if (err)
dev_err(dev->dev, "wlan reset failed: %d\n", err);
}
mutex_unlock(&hw_lock);
}
void mtk_wed_fe_reset_complete(void)
{
int i;
mutex_lock(&hw_lock);
for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
struct mtk_wed_hw *hw = hw_list[i];
struct mtk_wed_device *dev = hw->wed_dev;
if (!dev || !dev->wlan.reset_complete)
continue;
dev->wlan.reset_complete(dev);
}
mutex_unlock(&hw_lock);
}
static struct mtk_wed_hw *
mtk_wed_assign(struct mtk_wed_device *dev)
{
struct mtk_wed_hw *hw;
int i;
if (dev->wlan.bus_type == MTK_WED_BUS_PCIE) {
hw = hw_list[pci_domain_nr(dev->wlan.pci_dev->bus)];
if (!hw)
return NULL;
if (!hw->wed_dev)
goto out;
if (hw->version == 1)
return NULL;
/* MT7986 WED devices do not have any pcie slot restrictions */
}
/* MT7986 PCIE or AXI */
for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
hw = hw_list[i];
if (hw && !hw->wed_dev)
goto out;
}
return NULL;
out:
hw->wed_dev = dev;
return hw;
}
static int
mtk_wed_tx_buffer_alloc(struct mtk_wed_device *dev)
{
struct mtk_wdma_desc *desc;
dma_addr_t desc_phys;
void **page_list;
int token = dev->wlan.token_start;
int ring_size;
int n_pages;
int i, page_idx;
ring_size = dev->wlan.nbuf & ~(MTK_WED_BUF_PER_PAGE - 1);
n_pages = ring_size / MTK_WED_BUF_PER_PAGE;
page_list = kcalloc(n_pages, sizeof(*page_list), GFP_KERNEL);
if (!page_list)
return -ENOMEM;
dev->tx_buf_ring.size = ring_size;
dev->tx_buf_ring.pages = page_list;
desc = dma_alloc_coherent(dev->hw->dev, ring_size * sizeof(*desc),
&desc_phys, GFP_KERNEL);
if (!desc)
return -ENOMEM;
dev->tx_buf_ring.desc = desc;
dev->tx_buf_ring.desc_phys = desc_phys;
for (i = 0, page_idx = 0; i < ring_size; i += MTK_WED_BUF_PER_PAGE) {
dma_addr_t page_phys, buf_phys;
struct page *page;
void *buf;
int s;
page = __dev_alloc_pages(GFP_KERNEL, 0);
if (!page)
return -ENOMEM;
page_phys = dma_map_page(dev->hw->dev, page, 0, PAGE_SIZE,
DMA_BIDIRECTIONAL);
if (dma_mapping_error(dev->hw->dev, page_phys)) {
__free_page(page);
return -ENOMEM;
}
page_list[page_idx++] = page;
dma_sync_single_for_cpu(dev->hw->dev, page_phys, PAGE_SIZE,
DMA_BIDIRECTIONAL);
buf = page_to_virt(page);
buf_phys = page_phys;
for (s = 0; s < MTK_WED_BUF_PER_PAGE; s++) {
u32 txd_size;
u32 ctrl;
txd_size = dev->wlan.init_buf(buf, buf_phys, token++);
desc->buf0 = cpu_to_le32(buf_phys);
desc->buf1 = cpu_to_le32(buf_phys + txd_size);
if (dev->hw->version == 1)
ctrl = FIELD_PREP(MTK_WDMA_DESC_CTRL_LEN0, txd_size) |
FIELD_PREP(MTK_WDMA_DESC_CTRL_LEN1,
MTK_WED_BUF_SIZE - txd_size) |
MTK_WDMA_DESC_CTRL_LAST_SEG1;
else
ctrl = FIELD_PREP(MTK_WDMA_DESC_CTRL_LEN0, txd_size) |
FIELD_PREP(MTK_WDMA_DESC_CTRL_LEN1_V2,
MTK_WED_BUF_SIZE - txd_size) |
MTK_WDMA_DESC_CTRL_LAST_SEG0;
desc->ctrl = cpu_to_le32(ctrl);
desc->info = 0;
desc++;
buf += MTK_WED_BUF_SIZE;
buf_phys += MTK_WED_BUF_SIZE;
}
dma_sync_single_for_device(dev->hw->dev, page_phys, PAGE_SIZE,
DMA_BIDIRECTIONAL);
}
return 0;
}
static void
mtk_wed_free_tx_buffer(struct mtk_wed_device *dev)
{
struct mtk_wdma_desc *desc = dev->tx_buf_ring.desc;
void **page_list = dev->tx_buf_ring.pages;
int page_idx;
int i;
if (!page_list)
return;
if (!desc)
goto free_pagelist;
for (i = 0, page_idx = 0; i < dev->tx_buf_ring.size;
i += MTK_WED_BUF_PER_PAGE) {
void *page = page_list[page_idx++];
dma_addr_t buf_addr;
if (!page)
break;
buf_addr = le32_to_cpu(desc[i].buf0);
dma_unmap_page(dev->hw->dev, buf_addr, PAGE_SIZE,
DMA_BIDIRECTIONAL);
__free_page(page);
}
dma_free_coherent(dev->hw->dev, dev->tx_buf_ring.size * sizeof(*desc),
desc, dev->tx_buf_ring.desc_phys);
free_pagelist:
kfree(page_list);
}
static int
mtk_wed_rx_buffer_alloc(struct mtk_wed_device *dev)
{
struct mtk_rxbm_desc *desc;
dma_addr_t desc_phys;
dev->rx_buf_ring.size = dev->wlan.rx_nbuf;
desc = dma_alloc_coherent(dev->hw->dev,
dev->wlan.rx_nbuf * sizeof(*desc),
&desc_phys, GFP_KERNEL);
if (!desc)
return -ENOMEM;
dev->rx_buf_ring.desc = desc;
dev->rx_buf_ring.desc_phys = desc_phys;
dev->wlan.init_rx_buf(dev, dev->wlan.rx_npkt);
return 0;
}
static void
mtk_wed_free_rx_buffer(struct mtk_wed_device *dev)
{
struct mtk_rxbm_desc *desc = dev->rx_buf_ring.desc;
if (!desc)
return;
dev->wlan.release_rx_buf(dev);
dma_free_coherent(dev->hw->dev, dev->rx_buf_ring.size * sizeof(*desc),
desc, dev->rx_buf_ring.desc_phys);
}
static void
mtk_wed_rx_buffer_hw_init(struct mtk_wed_device *dev)
{
wed_w32(dev, MTK_WED_RX_BM_RX_DMAD,
FIELD_PREP(MTK_WED_RX_BM_RX_DMAD_SDL0, dev->wlan.rx_size));
wed_w32(dev, MTK_WED_RX_BM_BASE, dev->rx_buf_ring.desc_phys);
wed_w32(dev, MTK_WED_RX_BM_INIT_PTR, MTK_WED_RX_BM_INIT_SW_TAIL |
FIELD_PREP(MTK_WED_RX_BM_SW_TAIL, dev->wlan.rx_npkt));
wed_w32(dev, MTK_WED_RX_BM_DYN_ALLOC_TH,
FIELD_PREP(MTK_WED_RX_BM_DYN_ALLOC_TH_H, 0xffff));
wed_set(dev, MTK_WED_CTRL, MTK_WED_CTRL_WED_RX_BM_EN);
}
static void
mtk_wed_free_ring(struct mtk_wed_device *dev, struct mtk_wed_ring *ring)
{
if (!ring->desc)
return;
dma_free_coherent(dev->hw->dev, ring->size * ring->desc_size,
ring->desc, ring->desc_phys);
}
static void
mtk_wed_free_rx_rings(struct mtk_wed_device *dev)
{
mtk_wed_free_rx_buffer(dev);
mtk_wed_free_ring(dev, &dev->rro.ring);
}
static void
mtk_wed_free_tx_rings(struct mtk_wed_device *dev)
{
int i;
for (i = 0; i < ARRAY_SIZE(dev->tx_ring); i++)
mtk_wed_free_ring(dev, &dev->tx_ring[i]);
for (i = 0; i < ARRAY_SIZE(dev->rx_wdma); i++)
mtk_wed_free_ring(dev, &dev->rx_wdma[i]);
}
static void
mtk_wed_set_ext_int(struct mtk_wed_device *dev, bool en)
{
u32 mask = MTK_WED_EXT_INT_STATUS_ERROR_MASK;
if (dev->hw->version == 1)
mask |= MTK_WED_EXT_INT_STATUS_TX_DRV_R_RESP_ERR;
else
mask |= MTK_WED_EXT_INT_STATUS_RX_FBUF_LO_TH |
MTK_WED_EXT_INT_STATUS_RX_FBUF_HI_TH |
MTK_WED_EXT_INT_STATUS_RX_DRV_COHERENT |
MTK_WED_EXT_INT_STATUS_TX_DMA_W_RESP_ERR;
if (!dev->hw->num_flows)
mask &= ~MTK_WED_EXT_INT_STATUS_TKID_WO_PYLD;
wed_w32(dev, MTK_WED_EXT_INT_MASK, en ? mask : 0);
wed_r32(dev, MTK_WED_EXT_INT_MASK);
}
static void
mtk_wed_set_512_support(struct mtk_wed_device *dev, bool enable)
{
if (enable) {
wed_w32(dev, MTK_WED_TXDP_CTRL, MTK_WED_TXDP_DW9_OVERWR);
wed_w32(dev, MTK_WED_TXP_DW1,
FIELD_PREP(MTK_WED_WPDMA_WRITE_TXP, 0x0103));
} else {
wed_w32(dev, MTK_WED_TXP_DW1,
FIELD_PREP(MTK_WED_WPDMA_WRITE_TXP, 0x0100));
wed_clr(dev, MTK_WED_TXDP_CTRL, MTK_WED_TXDP_DW9_OVERWR);
}
}
#define MTK_WFMDA_RX_DMA_EN BIT(2)
static void
mtk_wed_check_wfdma_rx_fill(struct mtk_wed_device *dev, int idx)
{
u32 val;
int i;
if (!(dev->rx_ring[idx].flags & MTK_WED_RING_CONFIGURED))
return; /* queue is not configured by mt76 */
for (i = 0; i < 3; i++) {
u32 cur_idx;
cur_idx = wed_r32(dev,
MTK_WED_WPDMA_RING_RX_DATA(idx) +
MTK_WED_RING_OFS_CPU_IDX);
if (cur_idx == MTK_WED_RX_RING_SIZE - 1)
break;
usleep_range(100000, 200000);
}
if (i == 3) {
dev_err(dev->hw->dev, "rx dma enable failed\n");
return;
}
val = wifi_r32(dev, dev->wlan.wpdma_rx_glo - dev->wlan.phy_base) |
MTK_WFMDA_RX_DMA_EN;
wifi_w32(dev, dev->wlan.wpdma_rx_glo - dev->wlan.phy_base, val);
}
static void
mtk_wed_dma_disable(struct mtk_wed_device *dev)
{
wed_clr(dev, MTK_WED_WPDMA_GLO_CFG,
MTK_WED_WPDMA_GLO_CFG_TX_DRV_EN |
MTK_WED_WPDMA_GLO_CFG_RX_DRV_EN);
wed_clr(dev, MTK_WED_WDMA_GLO_CFG, MTK_WED_WDMA_GLO_CFG_RX_DRV_EN);
wed_clr(dev, MTK_WED_GLO_CFG,
MTK_WED_GLO_CFG_TX_DMA_EN |
MTK_WED_GLO_CFG_RX_DMA_EN);
wdma_clr(dev, MTK_WDMA_GLO_CFG,
MTK_WDMA_GLO_CFG_TX_DMA_EN |
MTK_WDMA_GLO_CFG_RX_INFO1_PRERES |
MTK_WDMA_GLO_CFG_RX_INFO2_PRERES);
if (dev->hw->version == 1) {
regmap_write(dev->hw->mirror, dev->hw->index * 4, 0);
wdma_clr(dev, MTK_WDMA_GLO_CFG,
MTK_WDMA_GLO_CFG_RX_INFO3_PRERES);
} else {
wed_clr(dev, MTK_WED_WPDMA_GLO_CFG,
MTK_WED_WPDMA_GLO_CFG_RX_DRV_R0_PKT_PROC |
MTK_WED_WPDMA_GLO_CFG_RX_DRV_R0_CRX_SYNC);
wed_clr(dev, MTK_WED_WPDMA_RX_D_GLO_CFG,
MTK_WED_WPDMA_RX_D_RX_DRV_EN);
wed_clr(dev, MTK_WED_WDMA_GLO_CFG,
MTK_WED_WDMA_GLO_CFG_TX_DDONE_CHK);
}
mtk_wed_set_512_support(dev, false);
}
static void
mtk_wed_stop(struct mtk_wed_device *dev)
{
mtk_wed_set_ext_int(dev, false);
wed_w32(dev, MTK_WED_WPDMA_INT_TRIGGER, 0);
wed_w32(dev, MTK_WED_WDMA_INT_TRIGGER, 0);
wdma_w32(dev, MTK_WDMA_INT_MASK, 0);
wdma_w32(dev, MTK_WDMA_INT_GRP2, 0);
wed_w32(dev, MTK_WED_WPDMA_INT_MASK, 0);
if (dev->hw->version == 1)
return;
wed_w32(dev, MTK_WED_EXT_INT_MASK1, 0);
wed_w32(dev, MTK_WED_EXT_INT_MASK2, 0);
}
static void
mtk_wed_deinit(struct mtk_wed_device *dev)
{
mtk_wed_stop(dev);
mtk_wed_dma_disable(dev);
wed_clr(dev, MTK_WED_CTRL,
MTK_WED_CTRL_WDMA_INT_AGENT_EN |
MTK_WED_CTRL_WPDMA_INT_AGENT_EN |
MTK_WED_CTRL_WED_TX_BM_EN |
MTK_WED_CTRL_WED_TX_FREE_AGENT_EN);
if (dev->hw->version == 1)
return;
wed_clr(dev, MTK_WED_CTRL,
MTK_WED_CTRL_RX_ROUTE_QM_EN |
MTK_WED_CTRL_WED_RX_BM_EN |
MTK_WED_CTRL_RX_RRO_QM_EN);
}
static void
__mtk_wed_detach(struct mtk_wed_device *dev)
{
struct mtk_wed_hw *hw = dev->hw;
mtk_wed_deinit(dev);
mtk_wdma_rx_reset(dev);
mtk_wed_reset(dev, MTK_WED_RESET_WED);
mtk_wed_free_tx_buffer(dev);
mtk_wed_free_tx_rings(dev);
if (mtk_wed_get_rx_capa(dev)) {
if (hw->wed_wo)
mtk_wed_wo_reset(dev);
mtk_wed_free_rx_rings(dev);
if (hw->wed_wo)
mtk_wed_wo_deinit(hw);
}
if (dev->wlan.bus_type == MTK_WED_BUS_PCIE) {
struct device_node *wlan_node;
wlan_node = dev->wlan.pci_dev->dev.of_node;
if (of_dma_is_coherent(wlan_node) && hw->hifsys)
regmap_update_bits(hw->hifsys, HIFSYS_DMA_AG_MAP,
BIT(hw->index), BIT(hw->index));
}
if (!hw_list[!hw->index]->wed_dev &&
hw->eth->dma_dev != hw->eth->dev)
mtk_eth_set_dma_device(hw->eth, hw->eth->dev);
memset(dev, 0, sizeof(*dev));
module_put(THIS_MODULE);
hw->wed_dev = NULL;
}
static void
mtk_wed_detach(struct mtk_wed_device *dev)
{
mutex_lock(&hw_lock);
__mtk_wed_detach(dev);
mutex_unlock(&hw_lock);
}
#define PCIE_BASE_ADDR0 0x11280000
static void
mtk_wed_bus_init(struct mtk_wed_device *dev)
{
switch (dev->wlan.bus_type) {
case MTK_WED_BUS_PCIE: {
struct device_node *np = dev->hw->eth->dev->of_node;
struct regmap *regs;
regs = syscon_regmap_lookup_by_phandle(np,
"mediatek,wed-pcie");
if (IS_ERR(regs))
break;
regmap_update_bits(regs, 0, BIT(0), BIT(0));
wed_w32(dev, MTK_WED_PCIE_INT_CTRL,
FIELD_PREP(MTK_WED_PCIE_INT_CTRL_POLL_EN, 2));
/* pcie interrupt control: pola/source selection */
wed_set(dev, MTK_WED_PCIE_INT_CTRL,
MTK_WED_PCIE_INT_CTRL_MSK_EN_POLA |
FIELD_PREP(MTK_WED_PCIE_INT_CTRL_SRC_SEL, 1));
wed_r32(dev, MTK_WED_PCIE_INT_CTRL);
wed_w32(dev, MTK_WED_PCIE_CFG_INTM, PCIE_BASE_ADDR0 | 0x180);
wed_w32(dev, MTK_WED_PCIE_CFG_BASE, PCIE_BASE_ADDR0 | 0x184);
/* pcie interrupt status trigger register */
wed_w32(dev, MTK_WED_PCIE_INT_TRIGGER, BIT(24));
wed_r32(dev, MTK_WED_PCIE_INT_TRIGGER);
/* pola setting */
wed_set(dev, MTK_WED_PCIE_INT_CTRL,
MTK_WED_PCIE_INT_CTRL_MSK_EN_POLA);
break;
}
case MTK_WED_BUS_AXI:
wed_set(dev, MTK_WED_WPDMA_INT_CTRL,
MTK_WED_WPDMA_INT_CTRL_SIG_SRC |
FIELD_PREP(MTK_WED_WPDMA_INT_CTRL_SRC_SEL, 0));
break;
default:
break;
}
}
static void
mtk_wed_set_wpdma(struct mtk_wed_device *dev)
{
if (dev->hw->version == 1) {
wed_w32(dev, MTK_WED_WPDMA_CFG_BASE, dev->wlan.wpdma_phys);
} else {
mtk_wed_bus_init(dev);
wed_w32(dev, MTK_WED_WPDMA_CFG_BASE, dev->wlan.wpdma_int);
wed_w32(dev, MTK_WED_WPDMA_CFG_INT_MASK, dev->wlan.wpdma_mask);
wed_w32(dev, MTK_WED_WPDMA_CFG_TX, dev->wlan.wpdma_tx);
wed_w32(dev, MTK_WED_WPDMA_CFG_TX_FREE, dev->wlan.wpdma_txfree);
wed_w32(dev, MTK_WED_WPDMA_RX_GLO_CFG, dev->wlan.wpdma_rx_glo);
wed_w32(dev, MTK_WED_WPDMA_RX_RING, dev->wlan.wpdma_rx);
}
}
static void
mtk_wed_hw_init_early(struct mtk_wed_device *dev)
{
u32 mask, set;
mtk_wed_deinit(dev);
mtk_wed_reset(dev, MTK_WED_RESET_WED);
mtk_wed_set_wpdma(dev);
mask = MTK_WED_WDMA_GLO_CFG_BT_SIZE |
MTK_WED_WDMA_GLO_CFG_DYNAMIC_DMAD_RECYCLE |
MTK_WED_WDMA_GLO_CFG_RX_DIS_FSM_AUTO_IDLE;
set = FIELD_PREP(MTK_WED_WDMA_GLO_CFG_BT_SIZE, 2) |
MTK_WED_WDMA_GLO_CFG_DYNAMIC_SKIP_DMAD_PREP |
MTK_WED_WDMA_GLO_CFG_IDLE_DMAD_SUPPLY;
wed_m32(dev, MTK_WED_WDMA_GLO_CFG, mask, set);
if (dev->hw->version == 1) {
u32 offset = dev->hw->index ? 0x04000400 : 0;
wdma_set(dev, MTK_WDMA_GLO_CFG,
MTK_WDMA_GLO_CFG_RX_INFO1_PRERES |
MTK_WDMA_GLO_CFG_RX_INFO2_PRERES |
MTK_WDMA_GLO_CFG_RX_INFO3_PRERES);
wed_w32(dev, MTK_WED_WDMA_OFFSET0, 0x2a042a20 + offset);
wed_w32(dev, MTK_WED_WDMA_OFFSET1, 0x29002800 + offset);
wed_w32(dev, MTK_WED_PCIE_CFG_BASE,
MTK_PCIE_BASE(dev->hw->index));
} else {
wed_w32(dev, MTK_WED_WDMA_CFG_BASE, dev->hw->wdma_phy);
wed_set(dev, MTK_WED_CTRL, MTK_WED_CTRL_ETH_DMAD_FMT);
wed_w32(dev, MTK_WED_WDMA_OFFSET0,
FIELD_PREP(MTK_WED_WDMA_OFST0_GLO_INTS,
MTK_WDMA_INT_STATUS) |
FIELD_PREP(MTK_WED_WDMA_OFST0_GLO_CFG,
MTK_WDMA_GLO_CFG));
wed_w32(dev, MTK_WED_WDMA_OFFSET1,
FIELD_PREP(MTK_WED_WDMA_OFST1_TX_CTRL,
MTK_WDMA_RING_TX(0)) |
FIELD_PREP(MTK_WED_WDMA_OFST1_RX_CTRL,
MTK_WDMA_RING_RX(0)));
}
}
static int
mtk_wed_rro_ring_alloc(struct mtk_wed_device *dev, struct mtk_wed_ring *ring,
int size)
{
ring->desc = dma_alloc_coherent(dev->hw->dev,
size * sizeof(*ring->desc),
&ring->desc_phys, GFP_KERNEL);
if (!ring->desc)
return -ENOMEM;
ring->desc_size = sizeof(*ring->desc);
ring->size = size;
return 0;
}
#define MTK_WED_MIOD_COUNT (MTK_WED_MIOD_ENTRY_CNT * MTK_WED_MIOD_CNT)
static int
mtk_wed_rro_alloc(struct mtk_wed_device *dev)
{
struct reserved_mem *rmem;
struct device_node *np;
int index;
index = of_property_match_string(dev->hw->node, "memory-region-names",
"wo-dlm");
if (index < 0)
return index;
np = of_parse_phandle(dev->hw->node, "memory-region", index);
if (!np)
return -ENODEV;
rmem = of_reserved_mem_lookup(np);
of_node_put(np);
if (!rmem)
return -ENODEV;
dev->rro.miod_phys = rmem->base;
dev->rro.fdbk_phys = MTK_WED_MIOD_COUNT + dev->rro.miod_phys;
return mtk_wed_rro_ring_alloc(dev, &dev->rro.ring,
MTK_WED_RRO_QUE_CNT);
}
static int
mtk_wed_rro_cfg(struct mtk_wed_device *dev)
{
struct mtk_wed_wo *wo = dev->hw->wed_wo;
struct {
struct {
__le32 base;
__le32 cnt;
__le32 unit;
} ring[2];
__le32 wed;
u8 version;
} req = {
.ring[0] = {
.base = cpu_to_le32(MTK_WED_WOCPU_VIEW_MIOD_BASE),
.cnt = cpu_to_le32(MTK_WED_MIOD_CNT),
.unit = cpu_to_le32(MTK_WED_MIOD_ENTRY_CNT),
},
.ring[1] = {
.base = cpu_to_le32(MTK_WED_WOCPU_VIEW_MIOD_BASE +
MTK_WED_MIOD_COUNT),
.cnt = cpu_to_le32(MTK_WED_FB_CMD_CNT),
.unit = cpu_to_le32(4),
},
};
return mtk_wed_mcu_send_msg(wo, MTK_WED_MODULE_ID_WO,
MTK_WED_WO_CMD_WED_CFG,
&req, sizeof(req), true);
}
static void
mtk_wed_rro_hw_init(struct mtk_wed_device *dev)
{
wed_w32(dev, MTK_WED_RROQM_MIOD_CFG,
FIELD_PREP(MTK_WED_RROQM_MIOD_MID_DW, 0x70 >> 2) |
FIELD_PREP(MTK_WED_RROQM_MIOD_MOD_DW, 0x10 >> 2) |
FIELD_PREP(MTK_WED_RROQM_MIOD_ENTRY_DW,
MTK_WED_MIOD_ENTRY_CNT >> 2));
wed_w32(dev, MTK_WED_RROQM_MIOD_CTRL0, dev->rro.miod_phys);
wed_w32(dev, MTK_WED_RROQM_MIOD_CTRL1,
FIELD_PREP(MTK_WED_RROQM_MIOD_CNT, MTK_WED_MIOD_CNT));
wed_w32(dev, MTK_WED_RROQM_FDBK_CTRL0, dev->rro.fdbk_phys);
wed_w32(dev, MTK_WED_RROQM_FDBK_CTRL1,
FIELD_PREP(MTK_WED_RROQM_FDBK_CNT, MTK_WED_FB_CMD_CNT));
wed_w32(dev, MTK_WED_RROQM_FDBK_CTRL2, 0);
wed_w32(dev, MTK_WED_RROQ_BASE_L, dev->rro.ring.desc_phys);
wed_set(dev, MTK_WED_RROQM_RST_IDX,
MTK_WED_RROQM_RST_IDX_MIOD |
MTK_WED_RROQM_RST_IDX_FDBK);
wed_w32(dev, MTK_WED_RROQM_RST_IDX, 0);
wed_w32(dev, MTK_WED_RROQM_MIOD_CTRL2, MTK_WED_MIOD_CNT - 1);
wed_set(dev, MTK_WED_CTRL, MTK_WED_CTRL_RX_RRO_QM_EN);
}
static void
mtk_wed_route_qm_hw_init(struct mtk_wed_device *dev)
{
wed_w32(dev, MTK_WED_RESET, MTK_WED_RESET_RX_ROUTE_QM);
for (;;) {
usleep_range(100, 200);
if (!(wed_r32(dev, MTK_WED_RESET) & MTK_WED_RESET_RX_ROUTE_QM))
break;
}
/* configure RX_ROUTE_QM */
wed_clr(dev, MTK_WED_RTQM_GLO_CFG, MTK_WED_RTQM_Q_RST);
wed_clr(dev, MTK_WED_RTQM_GLO_CFG, MTK_WED_RTQM_TXDMAD_FPORT);
wed_set(dev, MTK_WED_RTQM_GLO_CFG,
FIELD_PREP(MTK_WED_RTQM_TXDMAD_FPORT, 0x3 + dev->hw->index));
wed_clr(dev, MTK_WED_RTQM_GLO_CFG, MTK_WED_RTQM_Q_RST);
/* enable RX_ROUTE_QM */
wed_set(dev, MTK_WED_CTRL, MTK_WED_CTRL_RX_ROUTE_QM_EN);
}
static void
mtk_wed_hw_init(struct mtk_wed_device *dev)
{
if (dev->init_done)
return;
dev->init_done = true;
mtk_wed_set_ext_int(dev, false);
wed_w32(dev, MTK_WED_TX_BM_CTRL,
MTK_WED_TX_BM_CTRL_PAUSE |
FIELD_PREP(MTK_WED_TX_BM_CTRL_VLD_GRP_NUM,
dev->tx_buf_ring.size / 128) |
FIELD_PREP(MTK_WED_TX_BM_CTRL_RSV_GRP_NUM,
MTK_WED_TX_RING_SIZE / 256));
wed_w32(dev, MTK_WED_TX_BM_BASE, dev->tx_buf_ring.desc_phys);
wed_w32(dev, MTK_WED_TX_BM_BUF_LEN, MTK_WED_PKT_SIZE);
if (dev->hw->version == 1) {
wed_w32(dev, MTK_WED_TX_BM_TKID,
FIELD_PREP(MTK_WED_TX_BM_TKID_START,
dev->wlan.token_start) |
FIELD_PREP(MTK_WED_TX_BM_TKID_END,
dev->wlan.token_start +
dev->wlan.nbuf - 1));
wed_w32(dev, MTK_WED_TX_BM_DYN_THR,
FIELD_PREP(MTK_WED_TX_BM_DYN_THR_LO, 1) |
MTK_WED_TX_BM_DYN_THR_HI);
} else {
wed_w32(dev, MTK_WED_TX_BM_TKID_V2,
FIELD_PREP(MTK_WED_TX_BM_TKID_START,
dev->wlan.token_start) |
FIELD_PREP(MTK_WED_TX_BM_TKID_END,
dev->wlan.token_start +
dev->wlan.nbuf - 1));
wed_w32(dev, MTK_WED_TX_BM_DYN_THR,
FIELD_PREP(MTK_WED_TX_BM_DYN_THR_LO_V2, 0) |
MTK_WED_TX_BM_DYN_THR_HI_V2);
wed_w32(dev, MTK_WED_TX_TKID_CTRL,
MTK_WED_TX_TKID_CTRL_PAUSE |
FIELD_PREP(MTK_WED_TX_TKID_CTRL_VLD_GRP_NUM,
dev->tx_buf_ring.size / 128) |
FIELD_PREP(MTK_WED_TX_TKID_CTRL_RSV_GRP_NUM,
dev->tx_buf_ring.size / 128));
wed_w32(dev, MTK_WED_TX_TKID_DYN_THR,
FIELD_PREP(MTK_WED_TX_TKID_DYN_THR_LO, 0) |
MTK_WED_TX_TKID_DYN_THR_HI);
}
mtk_wed_reset(dev, MTK_WED_RESET_TX_BM);
if (dev->hw->version == 1) {
wed_set(dev, MTK_WED_CTRL,
MTK_WED_CTRL_WED_TX_BM_EN |
MTK_WED_CTRL_WED_TX_FREE_AGENT_EN);
} else {
wed_clr(dev, MTK_WED_TX_TKID_CTRL, MTK_WED_TX_TKID_CTRL_PAUSE);
/* rx hw init */
wed_w32(dev, MTK_WED_WPDMA_RX_D_RST_IDX,
MTK_WED_WPDMA_RX_D_RST_CRX_IDX |
MTK_WED_WPDMA_RX_D_RST_DRV_IDX);
wed_w32(dev, MTK_WED_WPDMA_RX_D_RST_IDX, 0);
mtk_wed_rx_buffer_hw_init(dev);
mtk_wed_rro_hw_init(dev);
mtk_wed_route_qm_hw_init(dev);
}
wed_clr(dev, MTK_WED_TX_BM_CTRL, MTK_WED_TX_BM_CTRL_PAUSE);
}
static void
mtk_wed_ring_reset(struct mtk_wed_ring *ring, int size, bool tx)
{
void *head = (void *)ring->desc;
int i;
for (i = 0; i < size; i++) {
struct mtk_wdma_desc *desc;
desc = (struct mtk_wdma_desc *)(head + i * ring->desc_size);
desc->buf0 = 0;
if (tx)
desc->ctrl = cpu_to_le32(MTK_WDMA_DESC_CTRL_DMA_DONE);
else
desc->ctrl = cpu_to_le32(MTK_WFDMA_DESC_CTRL_TO_HOST);
desc->buf1 = 0;
desc->info = 0;
}
}
static u32
mtk_wed_check_busy(struct mtk_wed_device *dev, u32 reg, u32 mask)
{
return !!(wed_r32(dev, reg) & mask);
}
static int
mtk_wed_poll_busy(struct mtk_wed_device *dev, u32 reg, u32 mask)
{
int sleep = 15000;
int timeout = 100 * sleep;
u32 val;
return read_poll_timeout(mtk_wed_check_busy, val, !val, sleep,
timeout, false, dev, reg, mask);
}
static int
mtk_wed_rx_reset(struct mtk_wed_device *dev)
{
struct mtk_wed_wo *wo = dev->hw->wed_wo;
u8 val = MTK_WED_WO_STATE_SER_RESET;
int i, ret;
ret = mtk_wed_mcu_send_msg(wo, MTK_WED_MODULE_ID_WO,
MTK_WED_WO_CMD_CHANGE_STATE, &val,
sizeof(val), true);
if (ret)
return ret;
wed_clr(dev, MTK_WED_WPDMA_RX_D_GLO_CFG, MTK_WED_WPDMA_RX_D_RX_DRV_EN);
ret = mtk_wed_poll_busy(dev, MTK_WED_WPDMA_RX_D_GLO_CFG,
MTK_WED_WPDMA_RX_D_RX_DRV_BUSY);
if (ret) {
mtk_wed_reset(dev, MTK_WED_RESET_WPDMA_INT_AGENT);
mtk_wed_reset(dev, MTK_WED_RESET_WPDMA_RX_D_DRV);
} else {
wed_w32(dev, MTK_WED_WPDMA_RX_D_RST_IDX,
MTK_WED_WPDMA_RX_D_RST_CRX_IDX |
MTK_WED_WPDMA_RX_D_RST_DRV_IDX);
wed_set(dev, MTK_WED_WPDMA_RX_D_GLO_CFG,
MTK_WED_WPDMA_RX_D_RST_INIT_COMPLETE |
MTK_WED_WPDMA_RX_D_FSM_RETURN_IDLE);
wed_clr(dev, MTK_WED_WPDMA_RX_D_GLO_CFG,
MTK_WED_WPDMA_RX_D_RST_INIT_COMPLETE |
MTK_WED_WPDMA_RX_D_FSM_RETURN_IDLE);
wed_w32(dev, MTK_WED_WPDMA_RX_D_RST_IDX, 0);
}
/* reset rro qm */
wed_clr(dev, MTK_WED_CTRL, MTK_WED_CTRL_RX_RRO_QM_EN);
ret = mtk_wed_poll_busy(dev, MTK_WED_CTRL,
MTK_WED_CTRL_RX_RRO_QM_BUSY);
if (ret) {
mtk_wed_reset(dev, MTK_WED_RESET_RX_RRO_QM);
} else {
wed_set(dev, MTK_WED_RROQM_RST_IDX,
MTK_WED_RROQM_RST_IDX_MIOD |
MTK_WED_RROQM_RST_IDX_FDBK);
wed_w32(dev, MTK_WED_RROQM_RST_IDX, 0);
}
/* reset route qm */
wed_clr(dev, MTK_WED_CTRL, MTK_WED_CTRL_RX_ROUTE_QM_EN);
ret = mtk_wed_poll_busy(dev, MTK_WED_CTRL,
MTK_WED_CTRL_RX_ROUTE_QM_BUSY);
if (ret)
mtk_wed_reset(dev, MTK_WED_RESET_RX_ROUTE_QM);
else
wed_set(dev, MTK_WED_RTQM_GLO_CFG,
MTK_WED_RTQM_Q_RST);
/* reset tx wdma */
mtk_wdma_tx_reset(dev);
/* reset tx wdma drv */
wed_clr(dev, MTK_WED_WDMA_GLO_CFG, MTK_WED_WDMA_GLO_CFG_TX_DRV_EN);
mtk_wed_poll_busy(dev, MTK_WED_CTRL,
MTK_WED_CTRL_WDMA_INT_AGENT_BUSY);
mtk_wed_reset(dev, MTK_WED_RESET_WDMA_TX_DRV);
/* reset wed rx dma */
ret = mtk_wed_poll_busy(dev, MTK_WED_GLO_CFG,
MTK_WED_GLO_CFG_RX_DMA_BUSY);
wed_clr(dev, MTK_WED_GLO_CFG, MTK_WED_GLO_CFG_RX_DMA_EN);
if (ret) {
mtk_wed_reset(dev, MTK_WED_RESET_WED_RX_DMA);
} else {
struct mtk_eth *eth = dev->hw->eth;
if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
wed_set(dev, MTK_WED_RESET_IDX,
MTK_WED_RESET_IDX_RX_V2);
else
wed_set(dev, MTK_WED_RESET_IDX, MTK_WED_RESET_IDX_RX);
wed_w32(dev, MTK_WED_RESET_IDX, 0);
}
/* reset rx bm */
wed_clr(dev, MTK_WED_CTRL, MTK_WED_CTRL_WED_RX_BM_EN);
mtk_wed_poll_busy(dev, MTK_WED_CTRL,
MTK_WED_CTRL_WED_RX_BM_BUSY);
mtk_wed_reset(dev, MTK_WED_RESET_RX_BM);
/* wo change to enable state */
val = MTK_WED_WO_STATE_ENABLE;
ret = mtk_wed_mcu_send_msg(wo, MTK_WED_MODULE_ID_WO,
MTK_WED_WO_CMD_CHANGE_STATE, &val,
sizeof(val), true);
if (ret)
return ret;
/* wed_rx_ring_reset */
for (i = 0; i < ARRAY_SIZE(dev->rx_ring); i++) {
if (!dev->rx_ring[i].desc)
continue;
mtk_wed_ring_reset(&dev->rx_ring[i], MTK_WED_RX_RING_SIZE,
false);
}
mtk_wed_free_rx_buffer(dev);
return 0;
}
static void
mtk_wed_reset_dma(struct mtk_wed_device *dev)
{
bool busy = false;
u32 val;
int i;
for (i = 0; i < ARRAY_SIZE(dev->tx_ring); i++) {
if (!dev->tx_ring[i].desc)
continue;
mtk_wed_ring_reset(&dev->tx_ring[i], MTK_WED_TX_RING_SIZE,
true);
}
/* 1. reset WED tx DMA */
wed_clr(dev, MTK_WED_GLO_CFG, MTK_WED_GLO_CFG_TX_DMA_EN);
busy = mtk_wed_poll_busy(dev, MTK_WED_GLO_CFG,
MTK_WED_GLO_CFG_TX_DMA_BUSY);
if (busy) {
mtk_wed_reset(dev, MTK_WED_RESET_WED_TX_DMA);
} else {
wed_w32(dev, MTK_WED_RESET_IDX, MTK_WED_RESET_IDX_TX);
wed_w32(dev, MTK_WED_RESET_IDX, 0);
}
/* 2. reset WDMA rx DMA */
busy = !!mtk_wdma_rx_reset(dev);
wed_clr(dev, MTK_WED_WDMA_GLO_CFG, MTK_WED_WDMA_GLO_CFG_RX_DRV_EN);
if (!busy)
busy = mtk_wed_poll_busy(dev, MTK_WED_WDMA_GLO_CFG,
MTK_WED_WDMA_GLO_CFG_RX_DRV_BUSY);
if (busy) {
mtk_wed_reset(dev, MTK_WED_RESET_WDMA_INT_AGENT);
mtk_wed_reset(dev, MTK_WED_RESET_WDMA_RX_DRV);
} else {
wed_w32(dev, MTK_WED_WDMA_RESET_IDX,
MTK_WED_WDMA_RESET_IDX_RX | MTK_WED_WDMA_RESET_IDX_DRV);
wed_w32(dev, MTK_WED_WDMA_RESET_IDX, 0);
wed_set(dev, MTK_WED_WDMA_GLO_CFG,
MTK_WED_WDMA_GLO_CFG_RST_INIT_COMPLETE);
wed_clr(dev, MTK_WED_WDMA_GLO_CFG,
MTK_WED_WDMA_GLO_CFG_RST_INIT_COMPLETE);
}
/* 3. reset WED WPDMA tx */
wed_clr(dev, MTK_WED_CTRL, MTK_WED_CTRL_WED_TX_FREE_AGENT_EN);
for (i = 0; i < 100; i++) {
val = wed_r32(dev, MTK_WED_TX_BM_INTF);
if (FIELD_GET(MTK_WED_TX_BM_INTF_TKFIFO_FDEP, val) == 0x40)
break;
}
mtk_wed_reset(dev, MTK_WED_RESET_TX_FREE_AGENT);
wed_clr(dev, MTK_WED_CTRL, MTK_WED_CTRL_WED_TX_BM_EN);
mtk_wed_reset(dev, MTK_WED_RESET_TX_BM);
/* 4. reset WED WPDMA tx */
busy = mtk_wed_poll_busy(dev, MTK_WED_WPDMA_GLO_CFG,
MTK_WED_WPDMA_GLO_CFG_TX_DRV_BUSY);
wed_clr(dev, MTK_WED_WPDMA_GLO_CFG,
MTK_WED_WPDMA_GLO_CFG_TX_DRV_EN |
MTK_WED_WPDMA_GLO_CFG_RX_DRV_EN);
if (!busy)
busy = mtk_wed_poll_busy(dev, MTK_WED_WPDMA_GLO_CFG,
MTK_WED_WPDMA_GLO_CFG_RX_DRV_BUSY);
if (busy) {
mtk_wed_reset(dev, MTK_WED_RESET_WPDMA_INT_AGENT);
mtk_wed_reset(dev, MTK_WED_RESET_WPDMA_TX_DRV);
mtk_wed_reset(dev, MTK_WED_RESET_WPDMA_RX_DRV);
} else {
wed_w32(dev, MTK_WED_WPDMA_RESET_IDX,
MTK_WED_WPDMA_RESET_IDX_TX |
MTK_WED_WPDMA_RESET_IDX_RX);
wed_w32(dev, MTK_WED_WPDMA_RESET_IDX, 0);
}
dev->init_done = false;
if (dev->hw->version == 1)
return;
if (!busy) {
wed_w32(dev, MTK_WED_RESET_IDX, MTK_WED_RESET_WPDMA_IDX_RX);
wed_w32(dev, MTK_WED_RESET_IDX, 0);
}
mtk_wed_rx_reset(dev);
}
static int
mtk_wed_ring_alloc(struct mtk_wed_device *dev, struct mtk_wed_ring *ring,
int size, u32 desc_size, bool tx)
{
ring->desc = dma_alloc_coherent(dev->hw->dev, size * desc_size,
&ring->desc_phys, GFP_KERNEL);
if (!ring->desc)
return -ENOMEM;
ring->desc_size = desc_size;
ring->size = size;
mtk_wed_ring_reset(ring, size, tx);
return 0;
}
static int
mtk_wed_wdma_rx_ring_setup(struct mtk_wed_device *dev, int idx, int size,
bool reset)
{
u32 desc_size = sizeof(struct mtk_wdma_desc) * dev->hw->version;
struct mtk_wed_ring *wdma;
if (idx >= ARRAY_SIZE(dev->rx_wdma))
return -EINVAL;
wdma = &dev->rx_wdma[idx];
if (!reset && mtk_wed_ring_alloc(dev, wdma, MTK_WED_WDMA_RING_SIZE,
desc_size, true))
return -ENOMEM;
wdma_w32(dev, MTK_WDMA_RING_RX(idx) + MTK_WED_RING_OFS_BASE,
wdma->desc_phys);
wdma_w32(dev, MTK_WDMA_RING_RX(idx) + MTK_WED_RING_OFS_COUNT,
size);
wdma_w32(dev, MTK_WDMA_RING_RX(idx) + MTK_WED_RING_OFS_CPU_IDX, 0);
wed_w32(dev, MTK_WED_WDMA_RING_RX(idx) + MTK_WED_RING_OFS_BASE,
wdma->desc_phys);
wed_w32(dev, MTK_WED_WDMA_RING_RX(idx) + MTK_WED_RING_OFS_COUNT,
size);
return 0;
}
static int
mtk_wed_wdma_tx_ring_setup(struct mtk_wed_device *dev, int idx, int size,
bool reset)
{
u32 desc_size = sizeof(struct mtk_wdma_desc) * dev->hw->version;
struct mtk_wed_ring *wdma;
if (idx >= ARRAY_SIZE(dev->tx_wdma))
return -EINVAL;
wdma = &dev->tx_wdma[idx];
if (!reset && mtk_wed_ring_alloc(dev, wdma, MTK_WED_WDMA_RING_SIZE,
desc_size, true))
return -ENOMEM;
wdma_w32(dev, MTK_WDMA_RING_TX(idx) + MTK_WED_RING_OFS_BASE,
wdma->desc_phys);
wdma_w32(dev, MTK_WDMA_RING_TX(idx) + MTK_WED_RING_OFS_COUNT,
size);
wdma_w32(dev, MTK_WDMA_RING_TX(idx) + MTK_WED_RING_OFS_CPU_IDX, 0);
wdma_w32(dev, MTK_WDMA_RING_TX(idx) + MTK_WED_RING_OFS_DMA_IDX, 0);
if (reset)
mtk_wed_ring_reset(wdma, MTK_WED_WDMA_RING_SIZE, true);
if (!idx) {
wed_w32(dev, MTK_WED_WDMA_RING_TX + MTK_WED_RING_OFS_BASE,
wdma->desc_phys);
wed_w32(dev, MTK_WED_WDMA_RING_TX + MTK_WED_RING_OFS_COUNT,
size);
wed_w32(dev, MTK_WED_WDMA_RING_TX + MTK_WED_RING_OFS_CPU_IDX,
0);
wed_w32(dev, MTK_WED_WDMA_RING_TX + MTK_WED_RING_OFS_DMA_IDX,
0);
}
return 0;
}
static void
mtk_wed_ppe_check(struct mtk_wed_device *dev, struct sk_buff *skb,
u32 reason, u32 hash)
{
struct mtk_eth *eth = dev->hw->eth;
struct ethhdr *eh;
if (!skb)
return;
if (reason != MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED)
return;
skb_set_mac_header(skb, 0);
eh = eth_hdr(skb);
skb->protocol = eh->h_proto;
mtk_ppe_check_skb(eth->ppe[dev->hw->index], skb, hash);
}
static void
mtk_wed_configure_irq(struct mtk_wed_device *dev, u32 irq_mask)
{
u32 wdma_mask = FIELD_PREP(MTK_WDMA_INT_MASK_RX_DONE, GENMASK(1, 0));
/* wed control cr set */
wed_set(dev, MTK_WED_CTRL,
MTK_WED_CTRL_WDMA_INT_AGENT_EN |
MTK_WED_CTRL_WPDMA_INT_AGENT_EN |
MTK_WED_CTRL_WED_TX_BM_EN |
MTK_WED_CTRL_WED_TX_FREE_AGENT_EN);
if (dev->hw->version == 1) {
wed_w32(dev, MTK_WED_PCIE_INT_TRIGGER,
MTK_WED_PCIE_INT_TRIGGER_STATUS);
wed_w32(dev, MTK_WED_WPDMA_INT_TRIGGER,
MTK_WED_WPDMA_INT_TRIGGER_RX_DONE |
MTK_WED_WPDMA_INT_TRIGGER_TX_DONE);
wed_clr(dev, MTK_WED_WDMA_INT_CTRL, wdma_mask);
} else {
wdma_mask |= FIELD_PREP(MTK_WDMA_INT_MASK_TX_DONE,
GENMASK(1, 0));
/* initail tx interrupt trigger */
wed_w32(dev, MTK_WED_WPDMA_INT_CTRL_TX,
MTK_WED_WPDMA_INT_CTRL_TX0_DONE_EN |
MTK_WED_WPDMA_INT_CTRL_TX0_DONE_CLR |
MTK_WED_WPDMA_INT_CTRL_TX1_DONE_EN |
MTK_WED_WPDMA_INT_CTRL_TX1_DONE_CLR |
FIELD_PREP(MTK_WED_WPDMA_INT_CTRL_TX0_DONE_TRIG,
dev->wlan.tx_tbit[0]) |
FIELD_PREP(MTK_WED_WPDMA_INT_CTRL_TX1_DONE_TRIG,
dev->wlan.tx_tbit[1]));
/* initail txfree interrupt trigger */
wed_w32(dev, MTK_WED_WPDMA_INT_CTRL_TX_FREE,
MTK_WED_WPDMA_INT_CTRL_TX_FREE_DONE_EN |
MTK_WED_WPDMA_INT_CTRL_TX_FREE_DONE_CLR |
FIELD_PREP(MTK_WED_WPDMA_INT_CTRL_TX_FREE_DONE_TRIG,
dev->wlan.txfree_tbit));
wed_w32(dev, MTK_WED_WPDMA_INT_CTRL_RX,
MTK_WED_WPDMA_INT_CTRL_RX0_EN |
MTK_WED_WPDMA_INT_CTRL_RX0_CLR |
MTK_WED_WPDMA_INT_CTRL_RX1_EN |
MTK_WED_WPDMA_INT_CTRL_RX1_CLR |
FIELD_PREP(MTK_WED_WPDMA_INT_CTRL_RX0_DONE_TRIG,
dev->wlan.rx_tbit[0]) |
FIELD_PREP(MTK_WED_WPDMA_INT_CTRL_RX1_DONE_TRIG,
dev->wlan.rx_tbit[1]));
wed_w32(dev, MTK_WED_WDMA_INT_CLR, wdma_mask);
wed_set(dev, MTK_WED_WDMA_INT_CTRL,
FIELD_PREP(MTK_WED_WDMA_INT_CTRL_POLL_SRC_SEL,
dev->wdma_idx));
}
wed_w32(dev, MTK_WED_WDMA_INT_TRIGGER, wdma_mask);
wdma_w32(dev, MTK_WDMA_INT_MASK, wdma_mask);
wdma_w32(dev, MTK_WDMA_INT_GRP2, wdma_mask);
wed_w32(dev, MTK_WED_WPDMA_INT_MASK, irq_mask);
wed_w32(dev, MTK_WED_INT_MASK, irq_mask);
}
static void
mtk_wed_dma_enable(struct mtk_wed_device *dev)
{
wed_set(dev, MTK_WED_WPDMA_INT_CTRL, MTK_WED_WPDMA_INT_CTRL_SUBRT_ADV);
wed_set(dev, MTK_WED_GLO_CFG,
MTK_WED_GLO_CFG_TX_DMA_EN |
MTK_WED_GLO_CFG_RX_DMA_EN);
wed_set(dev, MTK_WED_WPDMA_GLO_CFG,
MTK_WED_WPDMA_GLO_CFG_TX_DRV_EN |
MTK_WED_WPDMA_GLO_CFG_RX_DRV_EN);
wed_set(dev, MTK_WED_WDMA_GLO_CFG,
MTK_WED_WDMA_GLO_CFG_RX_DRV_EN);
wdma_set(dev, MTK_WDMA_GLO_CFG,
MTK_WDMA_GLO_CFG_TX_DMA_EN |
MTK_WDMA_GLO_CFG_RX_INFO1_PRERES |
MTK_WDMA_GLO_CFG_RX_INFO2_PRERES);
if (dev->hw->version == 1) {
wdma_set(dev, MTK_WDMA_GLO_CFG,
MTK_WDMA_GLO_CFG_RX_INFO3_PRERES);
} else {
int i;
wed_set(dev, MTK_WED_WPDMA_CTRL,
MTK_WED_WPDMA_CTRL_SDL1_FIXED);
wed_set(dev, MTK_WED_WDMA_GLO_CFG,
MTK_WED_WDMA_GLO_CFG_TX_DRV_EN |
MTK_WED_WDMA_GLO_CFG_TX_DDONE_CHK);
wed_set(dev, MTK_WED_WPDMA_GLO_CFG,
MTK_WED_WPDMA_GLO_CFG_RX_DRV_R0_PKT_PROC |
MTK_WED_WPDMA_GLO_CFG_RX_DRV_R0_CRX_SYNC);
wed_clr(dev, MTK_WED_WPDMA_GLO_CFG,
MTK_WED_WPDMA_GLO_CFG_TX_TKID_KEEP |
MTK_WED_WPDMA_GLO_CFG_TX_DMAD_DW3_PREV);
wed_set(dev, MTK_WED_WPDMA_RX_D_GLO_CFG,
MTK_WED_WPDMA_RX_D_RX_DRV_EN |
FIELD_PREP(MTK_WED_WPDMA_RX_D_RXD_READ_LEN, 0x18) |
FIELD_PREP(MTK_WED_WPDMA_RX_D_INIT_PHASE_RXEN_SEL,
0x2));
for (i = 0; i < MTK_WED_RX_QUEUES; i++)
mtk_wed_check_wfdma_rx_fill(dev, i);
}
}
static void
mtk_wed_start(struct mtk_wed_device *dev, u32 irq_mask)
{
int i;
if (mtk_wed_get_rx_capa(dev) && mtk_wed_rx_buffer_alloc(dev))
return;
for (i = 0; i < ARRAY_SIZE(dev->rx_wdma); i++)
if (!dev->rx_wdma[i].desc)
mtk_wed_wdma_rx_ring_setup(dev, i, 16, false);
mtk_wed_hw_init(dev);
mtk_wed_configure_irq(dev, irq_mask);
mtk_wed_set_ext_int(dev, true);
if (dev->hw->version == 1) {
u32 val = dev->wlan.wpdma_phys | MTK_PCIE_MIRROR_MAP_EN |
FIELD_PREP(MTK_PCIE_MIRROR_MAP_WED_ID,
dev->hw->index);
val |= BIT(0) | (BIT(1) * !!dev->hw->index);
regmap_write(dev->hw->mirror, dev->hw->index * 4, val);
} else {
/* driver set mid ready and only once */
wed_w32(dev, MTK_WED_EXT_INT_MASK1,
MTK_WED_EXT_INT_STATUS_WPDMA_MID_RDY);
wed_w32(dev, MTK_WED_EXT_INT_MASK2,
MTK_WED_EXT_INT_STATUS_WPDMA_MID_RDY);
wed_r32(dev, MTK_WED_EXT_INT_MASK1);
wed_r32(dev, MTK_WED_EXT_INT_MASK2);
if (mtk_wed_rro_cfg(dev))
return;
}
mtk_wed_set_512_support(dev, dev->wlan.wcid_512);
mtk_wed_dma_enable(dev);
dev->running = true;
}
static int
mtk_wed_attach(struct mtk_wed_device *dev)
__releases(RCU)
{
struct mtk_wed_hw *hw;
struct device *device;
int ret = 0;
RCU_LOCKDEP_WARN(!rcu_read_lock_held(),
"mtk_wed_attach without holding the RCU read lock");
if ((dev->wlan.bus_type == MTK_WED_BUS_PCIE &&
pci_domain_nr(dev->wlan.pci_dev->bus) > 1) ||
!try_module_get(THIS_MODULE))
ret = -ENODEV;
rcu_read_unlock();
if (ret)
return ret;
mutex_lock(&hw_lock);
hw = mtk_wed_assign(dev);
if (!hw) {
module_put(THIS_MODULE);
ret = -ENODEV;
goto unlock;
}
device = dev->wlan.bus_type == MTK_WED_BUS_PCIE
? &dev->wlan.pci_dev->dev
: &dev->wlan.platform_dev->dev;
dev_info(device, "attaching wed device %d version %d\n",
hw->index, hw->version);
dev->hw = hw;
dev->dev = hw->dev;
dev->irq = hw->irq;
dev->wdma_idx = hw->index;
dev->version = hw->version;
if (hw->eth->dma_dev == hw->eth->dev &&
of_dma_is_coherent(hw->eth->dev->of_node))
mtk_eth_set_dma_device(hw->eth, hw->dev);
ret = mtk_wed_tx_buffer_alloc(dev);
if (ret)
goto out;
if (mtk_wed_get_rx_capa(dev)) {
ret = mtk_wed_rro_alloc(dev);
if (ret)
goto out;
}
mtk_wed_hw_init_early(dev);
if (hw->version == 1) {
regmap_update_bits(hw->hifsys, HIFSYS_DMA_AG_MAP,
BIT(hw->index), 0);
} else {
dev->rev_id = wed_r32(dev, MTK_WED_REV_ID);
ret = mtk_wed_wo_init(hw);
}
out:
if (ret) {
dev_err(dev->hw->dev, "failed to attach wed device\n");
__mtk_wed_detach(dev);
}
unlock:
mutex_unlock(&hw_lock);
return ret;
}
static int
mtk_wed_tx_ring_setup(struct mtk_wed_device *dev, int idx, void __iomem *regs,
bool reset)
{
struct mtk_wed_ring *ring = &dev->tx_ring[idx];
/*
* Tx ring redirection:
* Instead of configuring the WLAN PDMA TX ring directly, the WLAN
* driver allocated DMA ring gets configured into WED MTK_WED_RING_TX(n)
* registers.
*
* WED driver posts its own DMA ring as WLAN PDMA TX and configures it
* into MTK_WED_WPDMA_RING_TX(n) registers.
* It gets filled with packets picked up from WED TX ring and from
* WDMA RX.
*/
if (WARN_ON(idx >= ARRAY_SIZE(dev->tx_ring)))
return -EINVAL;
if (!reset && mtk_wed_ring_alloc(dev, ring, MTK_WED_TX_RING_SIZE,
sizeof(*ring->desc), true))
return -ENOMEM;
if (mtk_wed_wdma_rx_ring_setup(dev, idx, MTK_WED_WDMA_RING_SIZE,
reset))
return -ENOMEM;
ring->reg_base = MTK_WED_RING_TX(idx);
ring->wpdma = regs;
/* WED -> WPDMA */
wpdma_tx_w32(dev, idx, MTK_WED_RING_OFS_BASE, ring->desc_phys);
wpdma_tx_w32(dev, idx, MTK_WED_RING_OFS_COUNT, MTK_WED_TX_RING_SIZE);
wpdma_tx_w32(dev, idx, MTK_WED_RING_OFS_CPU_IDX, 0);
wed_w32(dev, MTK_WED_WPDMA_RING_TX(idx) + MTK_WED_RING_OFS_BASE,
ring->desc_phys);
wed_w32(dev, MTK_WED_WPDMA_RING_TX(idx) + MTK_WED_RING_OFS_COUNT,
MTK_WED_TX_RING_SIZE);
wed_w32(dev, MTK_WED_WPDMA_RING_TX(idx) + MTK_WED_RING_OFS_CPU_IDX, 0);
return 0;
}
static int
mtk_wed_txfree_ring_setup(struct mtk_wed_device *dev, void __iomem *regs)
{
struct mtk_wed_ring *ring = &dev->txfree_ring;
int i, index = dev->hw->version == 1;
/*
* For txfree event handling, the same DMA ring is shared between WED
* and WLAN. The WLAN driver accesses the ring index registers through
* WED
*/
ring->reg_base = MTK_WED_RING_RX(index);
ring->wpdma = regs;
for (i = 0; i < 12; i += 4) {
u32 val = readl(regs + i);
wed_w32(dev, MTK_WED_RING_RX(index) + i, val);
wed_w32(dev, MTK_WED_WPDMA_RING_RX(index) + i, val);
}
return 0;
}
static int
mtk_wed_rx_ring_setup(struct mtk_wed_device *dev, int idx, void __iomem *regs,
bool reset)
{
struct mtk_wed_ring *ring = &dev->rx_ring[idx];
if (WARN_ON(idx >= ARRAY_SIZE(dev->rx_ring)))
return -EINVAL;
if (!reset && mtk_wed_ring_alloc(dev, ring, MTK_WED_RX_RING_SIZE,
sizeof(*ring->desc), false))
return -ENOMEM;
if (mtk_wed_wdma_tx_ring_setup(dev, idx, MTK_WED_WDMA_RING_SIZE,
reset))
return -ENOMEM;
ring->reg_base = MTK_WED_RING_RX_DATA(idx);
ring->wpdma = regs;
ring->flags |= MTK_WED_RING_CONFIGURED;
/* WPDMA -> WED */
wpdma_rx_w32(dev, idx, MTK_WED_RING_OFS_BASE, ring->desc_phys);
wpdma_rx_w32(dev, idx, MTK_WED_RING_OFS_COUNT, MTK_WED_RX_RING_SIZE);
wed_w32(dev, MTK_WED_WPDMA_RING_RX_DATA(idx) + MTK_WED_RING_OFS_BASE,
ring->desc_phys);
wed_w32(dev, MTK_WED_WPDMA_RING_RX_DATA(idx) + MTK_WED_RING_OFS_COUNT,
MTK_WED_RX_RING_SIZE);
return 0;
}
static u32
mtk_wed_irq_get(struct mtk_wed_device *dev, u32 mask)
{
u32 val, ext_mask = MTK_WED_EXT_INT_STATUS_ERROR_MASK;
if (dev->hw->version == 1)
ext_mask |= MTK_WED_EXT_INT_STATUS_TX_DRV_R_RESP_ERR;
else
ext_mask |= MTK_WED_EXT_INT_STATUS_RX_FBUF_LO_TH |
MTK_WED_EXT_INT_STATUS_RX_FBUF_HI_TH |
MTK_WED_EXT_INT_STATUS_RX_DRV_COHERENT |
MTK_WED_EXT_INT_STATUS_TX_DMA_W_RESP_ERR;
val = wed_r32(dev, MTK_WED_EXT_INT_STATUS);
wed_w32(dev, MTK_WED_EXT_INT_STATUS, val);
val &= ext_mask;
if (!dev->hw->num_flows)
val &= ~MTK_WED_EXT_INT_STATUS_TKID_WO_PYLD;
if (val && net_ratelimit())
pr_err("mtk_wed%d: error status=%08x\n", dev->hw->index, val);
val = wed_r32(dev, MTK_WED_INT_STATUS);
val &= mask;
wed_w32(dev, MTK_WED_INT_STATUS, val); /* ACK */
return val;
}
static void
mtk_wed_irq_set_mask(struct mtk_wed_device *dev, u32 mask)
{
if (!dev->running)
return;
mtk_wed_set_ext_int(dev, !!mask);
wed_w32(dev, MTK_WED_INT_MASK, mask);
}
int mtk_wed_flow_add(int index)
{
struct mtk_wed_hw *hw = hw_list[index];
int ret;
if (!hw || !hw->wed_dev)
return -ENODEV;
if (hw->num_flows) {
hw->num_flows++;
return 0;
}
mutex_lock(&hw_lock);
if (!hw->wed_dev) {
ret = -ENODEV;
goto out;
}
ret = hw->wed_dev->wlan.offload_enable(hw->wed_dev);
if (!ret)
hw->num_flows++;
mtk_wed_set_ext_int(hw->wed_dev, true);
out:
mutex_unlock(&hw_lock);
return ret;
}
void mtk_wed_flow_remove(int index)
{
struct mtk_wed_hw *hw = hw_list[index];
if (!hw)
return;
if (--hw->num_flows)
return;
mutex_lock(&hw_lock);
if (!hw->wed_dev)
goto out;
hw->wed_dev->wlan.offload_disable(hw->wed_dev);
mtk_wed_set_ext_int(hw->wed_dev, true);
out:
mutex_unlock(&hw_lock);
}
void mtk_wed_add_hw(struct device_node *np, struct mtk_eth *eth,
void __iomem *wdma, phys_addr_t wdma_phy,
int index)
{
static const struct mtk_wed_ops wed_ops = {
.attach = mtk_wed_attach,
.tx_ring_setup = mtk_wed_tx_ring_setup,
.rx_ring_setup = mtk_wed_rx_ring_setup,
.txfree_ring_setup = mtk_wed_txfree_ring_setup,
.msg_update = mtk_wed_mcu_msg_update,
.start = mtk_wed_start,
.stop = mtk_wed_stop,
.reset_dma = mtk_wed_reset_dma,
.reg_read = wed_r32,
.reg_write = wed_w32,
.irq_get = mtk_wed_irq_get,
.irq_set_mask = mtk_wed_irq_set_mask,
.detach = mtk_wed_detach,
.ppe_check = mtk_wed_ppe_check,
};
struct device_node *eth_np = eth->dev->of_node;
struct platform_device *pdev;
struct mtk_wed_hw *hw;
struct regmap *regs;
int irq;
if (!np)
return;
pdev = of_find_device_by_node(np);
if (!pdev)
goto err_of_node_put;
get_device(&pdev->dev);
irq = platform_get_irq(pdev, 0);
if (irq < 0)
goto err_put_device;
regs = syscon_regmap_lookup_by_phandle(np, NULL);
if (IS_ERR(regs))
goto err_put_device;
rcu_assign_pointer(mtk_soc_wed_ops, &wed_ops);
mutex_lock(&hw_lock);
if (WARN_ON(hw_list[index]))
goto unlock;
hw = kzalloc(sizeof(*hw), GFP_KERNEL);
if (!hw)
goto unlock;
hw->node = np;
hw->regs = regs;
hw->eth = eth;
hw->dev = &pdev->dev;
hw->wdma_phy = wdma_phy;
hw->wdma = wdma;
hw->index = index;
hw->irq = irq;
hw->version = MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2) ? 2 : 1;
if (hw->version == 1) {
hw->mirror = syscon_regmap_lookup_by_phandle(eth_np,
"mediatek,pcie-mirror");
hw->hifsys = syscon_regmap_lookup_by_phandle(eth_np,
"mediatek,hifsys");
if (IS_ERR(hw->mirror) || IS_ERR(hw->hifsys)) {
kfree(hw);
goto unlock;
}
if (!index) {
regmap_write(hw->mirror, 0, 0);
regmap_write(hw->mirror, 4, 0);
}
}
mtk_wed_hw_add_debugfs(hw);
hw_list[index] = hw;
mutex_unlock(&hw_lock);
return;
unlock:
mutex_unlock(&hw_lock);
err_put_device:
put_device(&pdev->dev);
err_of_node_put:
of_node_put(np);
}
void mtk_wed_exit(void)
{
int i;
rcu_assign_pointer(mtk_soc_wed_ops, NULL);
synchronize_rcu();
for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
struct mtk_wed_hw *hw;
hw = hw_list[i];
if (!hw)
continue;
hw_list[i] = NULL;
debugfs_remove(hw->debugfs_dir);
put_device(hw->dev);
of_node_put(hw->node);
kfree(hw);
}
}