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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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d713804c60
This patch moves the tx cleanup routines out of the critical interrupt context and into the (previously known as rx) tasklet. The main goal of this operation is to remove the extensive usage of spin_lock_irqsaves in the generic p54common library. The next step would be to modify p54usb to do the rx processing inside a tasklet (just like usbnet). Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
#ifndef P54PCI_H
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#define P54PCI_H
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/*
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* Defines for PCI based mac80211 Prism54 driver
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*
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* Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
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*
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* Based on the islsm (softmac prism54) driver, which is:
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* Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/* Device Interrupt register bits */
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#define ISL38XX_DEV_INT_RESET 0x0001
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#define ISL38XX_DEV_INT_UPDATE 0x0002
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#define ISL38XX_DEV_INT_WAKEUP 0x0008
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#define ISL38XX_DEV_INT_SLEEP 0x0010
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#define ISL38XX_DEV_INT_ABORT 0x0020
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/* these two only used in USB */
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#define ISL38XX_DEV_INT_DATA 0x0040
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#define ISL38XX_DEV_INT_MGMT 0x0080
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#define ISL38XX_DEV_INT_PCIUART_CTS 0x4000
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#define ISL38XX_DEV_INT_PCIUART_DR 0x8000
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/* Interrupt Identification/Acknowledge/Enable register bits */
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#define ISL38XX_INT_IDENT_UPDATE 0x0002
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#define ISL38XX_INT_IDENT_INIT 0x0004
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#define ISL38XX_INT_IDENT_WAKEUP 0x0008
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#define ISL38XX_INT_IDENT_SLEEP 0x0010
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#define ISL38XX_INT_IDENT_PCIUART_CTS 0x4000
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#define ISL38XX_INT_IDENT_PCIUART_DR 0x8000
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/* Control/Status register bits */
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#define ISL38XX_CTRL_STAT_SLEEPMODE 0x00000200
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#define ISL38XX_CTRL_STAT_CLKRUN 0x00800000
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#define ISL38XX_CTRL_STAT_RESET 0x10000000
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#define ISL38XX_CTRL_STAT_RAMBOOT 0x20000000
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#define ISL38XX_CTRL_STAT_STARTHALTED 0x40000000
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#define ISL38XX_CTRL_STAT_HOST_OVERRIDE 0x80000000
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struct p54p_csr {
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__le32 dev_int;
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u8 unused_1[12];
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__le32 int_ident;
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__le32 int_ack;
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__le32 int_enable;
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u8 unused_2[4];
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union {
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__le32 ring_control_base;
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__le32 gen_purp_com[2];
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};
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u8 unused_3[8];
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__le32 direct_mem_base;
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u8 unused_4[44];
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__le32 dma_addr;
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__le32 dma_len;
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__le32 dma_ctrl;
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u8 unused_5[12];
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__le32 ctrl_stat;
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u8 unused_6[1924];
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u8 cardbus_cis[0x800];
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u8 direct_mem_win[0x1000];
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} __attribute__ ((packed));
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/* usb backend only needs the register defines above */
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#ifndef P54USB_H
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struct p54p_desc {
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__le32 host_addr;
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__le32 device_addr;
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__le16 len;
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__le16 flags;
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} __attribute__ ((packed));
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struct p54p_ring_control {
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__le32 host_idx[4];
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__le32 device_idx[4];
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struct p54p_desc rx_data[8];
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struct p54p_desc tx_data[32];
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struct p54p_desc rx_mgmt[4];
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struct p54p_desc tx_mgmt[4];
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} __attribute__ ((packed));
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#define P54P_READ(r) (__force __le32)__raw_readl(&priv->map->r)
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#define P54P_WRITE(r, val) __raw_writel((__force u32)(__le32)(val), &priv->map->r)
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struct p54p_priv {
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struct p54_common common;
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struct pci_dev *pdev;
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struct p54p_csr __iomem *map;
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struct tasklet_struct tasklet;
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const struct firmware *firmware;
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spinlock_t lock;
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struct p54p_ring_control *ring_control;
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dma_addr_t ring_control_dma;
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u32 rx_idx_data, tx_idx_data;
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u32 rx_idx_mgmt, tx_idx_mgmt;
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struct sk_buff *rx_buf_data[8];
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struct sk_buff *rx_buf_mgmt[4];
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struct sk_buff *tx_buf_data[32];
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struct sk_buff *tx_buf_mgmt[4];
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struct completion boot_comp;
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};
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#endif /* P54USB_H */
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#endif /* P54PCI_H */
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