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/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/* Copyright(c) 2018-2019 Realtek Corporation
*/
#ifndef __RTK_PCI_H_
#define __RTK_PCI_H_
#include "main.h"
#define RTK_DEFAULT_TX_DESC_NUM 128
#define RTK_BEQ_TX_DESC_NUM 256
#define RTK_MAX_RX_DESC_NUM 512
/* 11K + rx desc size */
#define RTK_PCI_RX_BUF_SIZE (11454 + 24)
#define RTK_PCI_CTRL 0x300
#define BIT_RST_TRXDMA_INTF BIT(20)
#define BIT_RX_TAG_EN BIT(15)
#define REG_DBI_WDATA_V1 0x03E8
#define REG_DBI_RDATA_V1 0x03EC
#define REG_DBI_FLAG_V1 0x03F0
#define BIT_DBI_RFLAG BIT(17)
#define BIT_DBI_WFLAG BIT(16)
#define BITS_DBI_WREN GENMASK(15, 12)
#define BITS_DBI_ADDR_MASK GENMASK(11, 2)
#define REG_MDIO_V1 0x03F4
#define REG_PCIE_MIX_CFG 0x03F8
#define BITS_MDIO_ADDR_MASK GENMASK(4, 0)
#define BIT_MDIO_WFLAG_V1 BIT(5)
#define RTW_PCI_MDIO_PG_SZ BIT(5)
#define RTW_PCI_MDIO_PG_OFFS_G1 0
#define RTW_PCI_MDIO_PG_OFFS_G2 2
#define RTW_PCI_WR_RETRY_CNT 20
#define RTK_PCIE_LINK_CFG 0x0719
#define BIT_CLKREQ_SW_EN BIT(4)
#define BIT_L1_SW_EN BIT(3)
#define BIT_CLKREQ_N_PAD BIT(0)
#define RTK_PCIE_CLKDLY_CTRL 0x0725
#define BIT_PCI_BCNQ_FLAG BIT(4)
#define RTK_PCI_TXBD_DESA_BCNQ 0x308
#define RTK_PCI_TXBD_DESA_H2CQ 0x1320
#define RTK_PCI_TXBD_DESA_MGMTQ 0x310
#define RTK_PCI_TXBD_DESA_BKQ 0x330
#define RTK_PCI_TXBD_DESA_BEQ 0x328
#define RTK_PCI_TXBD_DESA_VIQ 0x320
#define RTK_PCI_TXBD_DESA_VOQ 0x318
#define RTK_PCI_TXBD_DESA_HI0Q 0x340
#define RTK_PCI_RXBD_DESA_MPDUQ 0x338
#define TRX_BD_IDX_MASK GENMASK(11, 0)
#define TRX_BD_HW_IDX_MASK GENMASK(27, 16)
/* BCNQ is specialized for rsvd page, does not need to specify a number */
#define RTK_PCI_TXBD_NUM_H2CQ 0x1328
#define RTK_PCI_TXBD_NUM_MGMTQ 0x380
#define RTK_PCI_TXBD_NUM_BKQ 0x38A
#define RTK_PCI_TXBD_NUM_BEQ 0x388
#define RTK_PCI_TXBD_NUM_VIQ 0x386
#define RTK_PCI_TXBD_NUM_VOQ 0x384
#define RTK_PCI_TXBD_NUM_HI0Q 0x38C
#define RTK_PCI_RXBD_NUM_MPDUQ 0x382
#define RTK_PCI_TXBD_IDX_H2CQ 0x132C
#define RTK_PCI_TXBD_IDX_MGMTQ 0x3B0
#define RTK_PCI_TXBD_IDX_BKQ 0x3AC
#define RTK_PCI_TXBD_IDX_BEQ 0x3A8
#define RTK_PCI_TXBD_IDX_VIQ 0x3A4
#define RTK_PCI_TXBD_IDX_VOQ 0x3A0
#define RTK_PCI_TXBD_IDX_HI0Q 0x3B8
#define RTK_PCI_RXBD_IDX_MPDUQ 0x3B4
#define RTK_PCI_TXBD_RWPTR_CLR 0x39C
#define RTK_PCI_TXBD_H2CQ_CSR 0x1330
#define BIT_CLR_H2CQ_HOST_IDX BIT(16)
#define BIT_CLR_H2CQ_HW_IDX BIT(8)
#define RTK_PCI_HIMR0 0x0B0
#define RTK_PCI_HISR0 0x0B4
#define RTK_PCI_HIMR1 0x0B8
#define RTK_PCI_HISR1 0x0BC
#define RTK_PCI_HIMR2 0x10B0
#define RTK_PCI_HISR2 0x10B4
#define RTK_PCI_HIMR3 0x10B8
#define RTK_PCI_HISR3 0x10BC
/* IMR 0 */
#define IMR_TIMER2 BIT(31)
#define IMR_TIMER1 BIT(30)
#define IMR_PSTIMEOUT BIT(29)
#define IMR_GTINT4 BIT(28)
#define IMR_GTINT3 BIT(27)
#define IMR_TBDER BIT(26)
#define IMR_TBDOK BIT(25)
#define IMR_TSF_BIT32_TOGGLE BIT(24)
#define IMR_BCNDMAINT0 BIT(20)
#define IMR_BCNDOK0 BIT(16)
#define IMR_HSISR_IND_ON_INT BIT(15)
#define IMR_BCNDMAINT_E BIT(14)
#define IMR_ATIMEND BIT(12)
#define IMR_HISR1_IND_INT BIT(11)
#define IMR_C2HCMD BIT(10)
#define IMR_CPWM2 BIT(9)
#define IMR_CPWM BIT(8)
#define IMR_HIGHDOK BIT(7)
#define IMR_MGNTDOK BIT(6)
#define IMR_BKDOK BIT(5)
#define IMR_BEDOK BIT(4)
#define IMR_VIDOK BIT(3)
#define IMR_VODOK BIT(2)
#define IMR_RDU BIT(1)
#define IMR_ROK BIT(0)
/* IMR 1 */
#define IMR_TXFIFO_TH_INT BIT(30)
#define IMR_BTON_STS_UPDATE BIT(29)
#define IMR_MCUERR BIT(28)
#define IMR_BCNDMAINT7 BIT(27)
#define IMR_BCNDMAINT6 BIT(26)
#define IMR_BCNDMAINT5 BIT(25)
#define IMR_BCNDMAINT4 BIT(24)
#define IMR_BCNDMAINT3 BIT(23)
#define IMR_BCNDMAINT2 BIT(22)
#define IMR_BCNDMAINT1 BIT(21)
#define IMR_BCNDOK7 BIT(20)
#define IMR_BCNDOK6 BIT(19)
#define IMR_BCNDOK5 BIT(18)
#define IMR_BCNDOK4 BIT(17)
#define IMR_BCNDOK3 BIT(16)
#define IMR_BCNDOK2 BIT(15)
#define IMR_BCNDOK1 BIT(14)
#define IMR_ATIMEND_E BIT(13)
#define IMR_ATIMEND BIT(12)
#define IMR_TXERR BIT(11)
#define IMR_RXERR BIT(10)
#define IMR_TXFOVW BIT(9)
#define IMR_RXFOVW BIT(8)
#define IMR_CPU_MGQ_TXDONE BIT(5)
#define IMR_PS_TIMER_C BIT(4)
#define IMR_PS_TIMER_B BIT(3)
#define IMR_PS_TIMER_A BIT(2)
#define IMR_CPUMGQ_TX_TIMER BIT(1)
/* IMR 3 */
#define IMR_H2CDOK BIT(16)
enum rtw_pci_flags {
RTW_PCI_FLAG_NAPI_RUNNING,
NUM_OF_RTW_PCI_FLAGS,
};
/* one element is reserved to know if the ring is closed */
static inline int avail_desc(u32 wp, u32 rp, u32 len)
{
if (rp > wp)
return rp - wp - 1;
else
return len - wp + rp - 1;
}
#define RTK_PCI_TXBD_OWN_OFFSET 15
#define RTK_PCI_TXBD_BCN_WORK 0x383
struct rtw_pci_tx_buffer_desc {
__le16 buf_size;
__le16 psb_len;
__le32 dma;
};
struct rtw_pci_tx_data {
dma_addr_t dma;
u8 sn;
};
struct rtw_pci_ring {
u8 *head;
dma_addr_t dma;
u8 desc_size;
u32 len;
u32 wp;
u32 rp;
};
struct rtw_pci_tx_ring {
struct rtw_pci_ring r;
struct sk_buff_head queue;
bool queue_stopped;
};
struct rtw_pci_rx_buffer_desc {
__le16 buf_size;
__le16 total_pkt_size;
__le32 dma;
};
struct rtw_pci_rx_ring {
struct rtw_pci_ring r;
struct sk_buff *buf[RTK_MAX_RX_DESC_NUM];
};
#define RX_TAG_MAX 8192
struct rtw_pci {
struct pci_dev *pdev;
/* Used for PCI interrupt. */
spinlock_t hwirq_lock;
/* Used for PCI TX ring/queueing, and enable INT. */
spinlock_t irq_lock;
u32 irq_mask[4];
bool irq_enabled;
bool running;
/* napi structure */
struct net_device *netdev;
struct napi_struct napi;
u16 rx_tag;
DECLARE_BITMAP(tx_queued, RTK_MAX_TX_QUEUE_NUM);
struct rtw_pci_tx_ring tx_rings[RTK_MAX_TX_QUEUE_NUM];
struct rtw_pci_rx_ring rx_rings[RTK_MAX_RX_QUEUE_NUM];
u16 link_ctrl;
atomic_t link_usage;
bool rx_no_aspm;
DECLARE_BITMAP(flags, NUM_OF_RTW_PCI_FLAGS);
void __iomem *mmap;
};
extern const struct dev_pm_ops rtw_pm_ops;
int rtw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id);
void rtw_pci_remove(struct pci_dev *pdev);
void rtw_pci_shutdown(struct pci_dev *pdev);
static inline u32 max_num_of_tx_queue(u8 queue)
{
u32 max_num;
switch (queue) {
case RTW_TX_QUEUE_BE:
max_num = RTK_BEQ_TX_DESC_NUM;
break;
case RTW_TX_QUEUE_BCN:
max_num = 1;
break;
default:
max_num = RTK_DEFAULT_TX_DESC_NUM;
break;
}
return max_num;
}
static inline struct
rtw_pci_tx_data *rtw_pci_get_tx_data(struct sk_buff *skb)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
BUILD_BUG_ON(sizeof(struct rtw_pci_tx_data) >
sizeof(info->status.status_driver_data));
return (struct rtw_pci_tx_data *)info->status.status_driver_data;
}
static inline
struct rtw_pci_tx_buffer_desc *get_tx_buffer_desc(struct rtw_pci_tx_ring *ring,
u32 size)
{
u8 *buf_desc;
buf_desc = ring->r.head + ring->r.wp * size;
return (struct rtw_pci_tx_buffer_desc *)buf_desc;
}
#endif
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