- 根目录:
- drivers
- media
- pci
- netup_unidvb
- netup_unidvb_core.c
/*
* netup_unidvb_core.c
*
* Main module for NetUP Universal Dual DVB-CI
*
* Copyright (C) 2014 NetUP Inc.
* Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
* Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kmod.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/list.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-vmalloc.h>
#include "netup_unidvb.h"
#include "cxd2841er.h"
#include "horus3a.h"
#include "ascot2e.h"
#include "lnbh25.h"
static int spi_enable;
module_param(spi_enable, int, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
MODULE_DESCRIPTION("Driver for NetUP Dual Universal DVB CI PCIe card");
MODULE_AUTHOR("info@netup.ru");
MODULE_VERSION(NETUP_UNIDVB_VERSION);
MODULE_LICENSE("GPL");
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
/* Avalon-MM PCI-E registers */
#define AVL_PCIE_IENR 0x50
#define AVL_PCIE_ISR 0x40
#define AVL_IRQ_ENABLE 0x80
#define AVL_IRQ_ASSERTED 0x80
/* GPIO registers */
#define GPIO_REG_IO 0x4880
#define GPIO_REG_IO_TOGGLE 0x4882
#define GPIO_REG_IO_SET 0x4884
#define GPIO_REG_IO_CLEAR 0x4886
/* GPIO bits */
#define GPIO_FEA_RESET (1 << 0)
#define GPIO_FEB_RESET (1 << 1)
#define GPIO_RFA_CTL (1 << 2)
#define GPIO_RFB_CTL (1 << 3)
#define GPIO_FEA_TU_RESET (1 << 4)
#define GPIO_FEB_TU_RESET (1 << 5)
/* DMA base address */
#define NETUP_DMA0_ADDR 0x4900
#define NETUP_DMA1_ADDR 0x4940
/* 8 DMA blocks * 128 packets * 188 bytes*/
#define NETUP_DMA_BLOCKS_COUNT 8
#define NETUP_DMA_PACKETS_COUNT 128
/* DMA status bits */
#define BIT_DMA_RUN 1
#define BIT_DMA_ERROR 2
#define BIT_DMA_IRQ 0x200
/**
* struct netup_dma_regs - the map of DMA module registers
* @ctrlstat_set: Control register, write to set control bits
* @ctrlstat_clear: Control register, write to clear control bits
* @start_addr_lo: DMA ring buffer start address, lower part
* @start_addr_hi: DMA ring buffer start address, higher part
* @size: DMA ring buffer size register
Bits [0-7]: DMA packet size, 188 bytes
Bits [16-23]: packets count in block, 128 packets
Bits [24-31]: blocks count, 8 blocks
* @timeout: DMA timeout in units of 8ns
For example, value of 375000000 equals to 3 sec
* @curr_addr_lo: Current ring buffer head address, lower part
* @curr_addr_hi: Current ring buffer head address, higher part
* @stat_pkt_received: Statistic register, not tested
* @stat_pkt_accepted: Statistic register, not tested
* @stat_pkt_overruns: Statistic register, not tested
* @stat_pkt_underruns: Statistic register, not tested
* @stat_fifo_overruns: Statistic register, not tested
*/
struct netup_dma_regs {
__le32 ctrlstat_set;
__le32 ctrlstat_clear;
__le32 start_addr_lo;
__le32 start_addr_hi;
__le32 size;
__le32 timeout;
__le32 curr_addr_lo;
__le32 curr_addr_hi;
__le32 stat_pkt_received;
__le32 stat_pkt_accepted;
__le32 stat_pkt_overruns;
__le32 stat_pkt_underruns;
__le32 stat_fifo_overruns;
} __packed __aligned(1);
struct netup_unidvb_buffer {
struct vb2_v4l2_buffer vb;
struct list_head list;
u32 size;
};
static int netup_unidvb_tuner_ctrl(void *priv, int is_dvb_tc);
static void netup_unidvb_queue_cleanup(struct netup_dma *dma);
static struct cxd2841er_config demod_config = {
.i2c_addr = 0xc8
};
static struct horus3a_config horus3a_conf = {
.i2c_address = 0xc0,
.xtal_freq_mhz = 16,
.set_tuner_callback = netup_unidvb_tuner_ctrl
};
static struct ascot2e_config ascot2e_conf = {
.i2c_address = 0xc2,
.set_tuner_callback = netup_unidvb_tuner_ctrl
};
static struct lnbh25_config lnbh25_conf = {
.i2c_address = 0x10,
.data2_config = LNBH25_TEN | LNBH25_EXTM
};
static int netup_unidvb_tuner_ctrl(void *priv, int is_dvb_tc)
{
u8 reg, mask;
struct netup_dma *dma = priv;
struct netup_unidvb_dev *ndev;
if (!priv)
return -EINVAL;
ndev = dma->ndev;
dev_dbg(&ndev->pci_dev->dev, "%s(): num %d is_dvb_tc %d\n",
__func__, dma->num, is_dvb_tc);
reg = readb(ndev->bmmio0 + GPIO_REG_IO);
mask = (dma->num == 0) ? GPIO_RFA_CTL : GPIO_RFB_CTL;
if (!is_dvb_tc)
reg |= mask;
else
reg &= ~mask;
writeb(reg, ndev->bmmio0 + GPIO_REG_IO);
return 0;
}
static void netup_unidvb_dev_enable(struct netup_unidvb_dev *ndev)
{
u16 gpio_reg;
/* enable PCI-E interrupts */
writel(AVL_IRQ_ENABLE, ndev->bmmio0 + AVL_PCIE_IENR);
/* unreset frontends bits[0:1] */
writeb(0x00, ndev->bmmio0 + GPIO_REG_IO);
msleep(100);
gpio_reg =
GPIO_FEA_RESET | GPIO_FEB_RESET |
GPIO_FEA_TU_RESET | GPIO_FEB_TU_RESET |
GPIO_RFA_CTL | GPIO_RFB_CTL;
writeb(gpio_reg, ndev->bmmio0 + GPIO_REG_IO);
dev_dbg(&ndev->pci_dev->dev,
"%s(): AVL_PCIE_IENR 0x%x GPIO_REG_IO 0x%x\n",
__func__, readl(ndev->bmmio0 + AVL_PCIE_IENR),
(int)readb(ndev->bmmio0 + GPIO_REG_IO));
}
static void netup_unidvb_dma_enable(struct netup_dma *dma, int enable)
{
u32 irq_mask = (dma->num == 0 ?
NETUP_UNIDVB_IRQ_DMA1 : NETUP_UNIDVB_IRQ_DMA2);
dev_dbg(&dma->ndev->pci_dev->dev,
"%s(): DMA%d enable %d\n", __func__, dma->num, enable);
if (enable) {
writel(BIT_DMA_RUN, &dma->regs->ctrlstat_set);
writew(irq_mask, dma->ndev->bmmio0 + REG_IMASK_SET);
} else {
writel(BIT_DMA_RUN, &dma->regs->ctrlstat_clear);
writew(irq_mask, dma->ndev->bmmio0 + REG_IMASK_CLEAR);
}
}
static irqreturn_t netup_dma_interrupt(struct netup_dma *dma)
{
u64 addr_curr;
u32 size;
unsigned long flags;
struct device *dev = &dma->ndev->pci_dev->dev;
spin_lock_irqsave(&dma->lock, flags);
addr_curr = ((u64)readl(&dma->regs->curr_addr_hi) << 32) |
(u64)readl(&dma->regs->curr_addr_lo) | dma->high_addr;
/* clear IRQ */
writel(BIT_DMA_IRQ, &dma->regs->ctrlstat_clear);
/* sanity check */
if (addr_curr < dma->addr_phys ||
addr_curr > dma->addr_phys + dma->ring_buffer_size) {
if (addr_curr != 0) {
dev_err(dev,
"%s(): addr 0x%llx not from 0x%llx:0x%llx\n",
__func__, addr_curr, (u64)dma->addr_phys,
(u64)(dma->addr_phys + dma->ring_buffer_size));
}
goto irq_handled;
}
size = (addr_curr >= dma->addr_last) ?
(u32)(addr_curr - dma->addr_last) :
(u32)(dma->ring_buffer_size - (dma->addr_last - addr_curr));
if (dma->data_size != 0) {
printk_ratelimited("%s(): lost interrupt, data size %d\n",
__func__, dma->data_size);
dma->data_size += size;
}
if (dma->data_size == 0 || dma->data_size > dma->ring_buffer_size) {
dma->data_size = size;
dma->data_offset = (u32)(dma->addr_last - dma->addr_phys);
}
dma->addr_last = addr_curr;
queue_work(dma->ndev->wq, &dma->work);
irq_handled:
spin_unlock_irqrestore(&dma->lock, flags);
return IRQ_HANDLED;
}
static irqreturn_t netup_unidvb_isr(int irq, void *dev_id)
{
struct pci_dev *pci_dev = (struct pci_dev *)dev_id;
struct netup_unidvb_dev *ndev = pci_get_drvdata(pci_dev);
u32 reg40, reg_isr;
irqreturn_t iret = IRQ_NONE;
/* disable interrupts */
writel(0, ndev->bmmio0 + AVL_PCIE_IENR);
/* check IRQ source */
reg40 = readl(ndev->bmmio0 + AVL_PCIE_ISR);
if ((reg40 & AVL_IRQ_ASSERTED) != 0) {
/* IRQ is being signaled */
reg_isr = readw(ndev->bmmio0 + REG_ISR);
if (reg_isr & NETUP_UNIDVB_IRQ_I2C0) {
iret = netup_i2c_interrupt(&ndev->i2c[0]);
} else if (reg_isr & NETUP_UNIDVB_IRQ_I2C1) {
iret = netup_i2c_interrupt(&ndev->i2c[1]);
} else if (reg_isr & NETUP_UNIDVB_IRQ_SPI) {
iret = netup_spi_interrupt(ndev->spi);
} else if (reg_isr & NETUP_UNIDVB_IRQ_DMA1) {
iret = netup_dma_interrupt(&ndev->dma[0]);
} else if (reg_isr & NETUP_UNIDVB_IRQ_DMA2) {
iret = netup_dma_interrupt(&ndev->dma[1]);
} else if (reg_isr & NETUP_UNIDVB_IRQ_CI) {
iret = netup_ci_interrupt(ndev);
} else {
dev_err(&pci_dev->dev,
"%s(): unknown interrupt 0x%x\n",
__func__, reg_isr);
}
}
/* re-enable interrupts */
writel(AVL_IRQ_ENABLE, ndev->bmmio0 + AVL_PCIE_IENR);
return iret;
}
static int netup_unidvb_queue_setup(struct vb2_queue *vq,
const void *parg,
unsigned int *nbuffers,
unsigned int *nplanes,
unsigned int sizes[],
void *alloc_ctxs[])
{
struct netup_dma *dma = vb2_get_drv_priv(vq);
dev_dbg(&dma->ndev->pci_dev->dev, "%s()\n", __func__);
*nplanes = 1;
if (vq->num_buffers + *nbuffers < VIDEO_MAX_FRAME)
*nbuffers = VIDEO_MAX_FRAME - vq->num_buffers;
sizes[0] = PAGE_ALIGN(NETUP_DMA_PACKETS_COUNT * 188);
dev_dbg(&dma->ndev->pci_dev->dev, "%s() nbuffers=%d sizes[0]=%d\n",
__func__, *nbuffers, sizes[0]);
return 0;
}
static int netup_unidvb_buf_prepare(struct vb2_buffer *vb)
{
struct netup_dma *dma = vb2_get_drv_priv(vb->vb2_queue);
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct netup_unidvb_buffer *buf = container_of(vbuf,
struct netup_unidvb_buffer, vb);
dev_dbg(&dma->ndev->pci_dev->dev, "%s(): buf 0x%p\n", __func__, buf);
buf->size = 0;
return 0;
}
static void netup_unidvb_buf_queue(struct vb2_buffer *vb)
{
unsigned long flags;
struct netup_dma *dma = vb2_get_drv_priv(vb->vb2_queue);
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct netup_unidvb_buffer *buf = container_of(vbuf,
struct netup_unidvb_buffer, vb);
dev_dbg(&dma->ndev->pci_dev->dev, "%s(): %p\n", __func__, buf);
spin_lock_irqsave(&dma->lock, flags);
list_add_tail(&buf->list, &dma->free_buffers);
spin_unlock_irqrestore(&dma->lock, flags);
mod_timer(&dma->timeout, jiffies + msecs_to_jiffies(1000));
}
static int netup_unidvb_start_streaming(struct vb2_queue *q, unsigned int count)
{
struct netup_dma *dma = vb2_get_drv_priv(q);
dev_dbg(&dma->ndev->pci_dev->dev, "%s()\n", __func__);
netup_unidvb_dma_enable(dma, 1);
return 0;
}
static void netup_unidvb_stop_streaming(struct vb2_queue *q)
{
struct netup_dma *dma = vb2_get_drv_priv(q);
dev_dbg(&dma->ndev->pci_dev->dev, "%s()\n", __func__);
netup_unidvb_dma_enable(dma, 0);
netup_unidvb_queue_cleanup(dma);
}
static struct vb2_ops dvb_qops = {
.queue_setup = netup_unidvb_queue_setup,
.buf_prepare = netup_unidvb_buf_prepare,
.buf_queue = netup_unidvb_buf_queue,
.start_streaming = netup_unidvb_start_streaming,
.stop_streaming = netup_unidvb_stop_streaming,
};
static int netup_unidvb_queue_init(struct netup_dma *dma,
struct vb2_queue *vb_queue)
{
int res;
/* Init videobuf2 queue structure */
vb_queue->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vb_queue->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
vb_queue->drv_priv = dma;
vb_queue->buf_struct_size = sizeof(struct netup_unidvb_buffer);
vb_queue->ops = &dvb_qops;
vb_queue->mem_ops = &vb2_vmalloc_memops;
vb_queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
res = vb2_queue_init(vb_queue);
if (res != 0) {
dev_err(&dma->ndev->pci_dev->dev,
"%s(): vb2_queue_init failed (%d)\n", __func__, res);
}
return res;
}
static int netup_unidvb_dvb_init(struct netup_unidvb_dev *ndev,
int num)
{
struct vb2_dvb_frontend *fe0, *fe1, *fe2;
if (num < 0 || num > 1) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): unable to init DVB bus %d\n", __func__, num);
return -ENODEV;
}
mutex_init(&ndev->frontends[num].lock);
INIT_LIST_HEAD(&ndev->frontends[num].felist);
if (vb2_dvb_alloc_frontend(&ndev->frontends[num], 1) == NULL ||
vb2_dvb_alloc_frontend(
&ndev->frontends[num], 2) == NULL ||
vb2_dvb_alloc_frontend(
&ndev->frontends[num], 3) == NULL) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): unable to to alllocate vb2_dvb_frontend\n",
__func__);
return -ENOMEM;
}
fe0 = vb2_dvb_get_frontend(&ndev->frontends[num], 1);
fe1 = vb2_dvb_get_frontend(&ndev->frontends[num], 2);
fe2 = vb2_dvb_get_frontend(&ndev->frontends[num], 3);
if (fe0 == NULL || fe1 == NULL || fe2 == NULL) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): frontends has not been allocated\n", __func__);
return -EINVAL;
}
netup_unidvb_queue_init(&ndev->dma[num], &fe0->dvb.dvbq);
netup_unidvb_queue_init(&ndev->dma[num], &fe1->dvb.dvbq);
netup_unidvb_queue_init(&ndev->dma[num], &fe2->dvb.dvbq);
fe0->dvb.name = "netup_fe0";
fe1->dvb.name = "netup_fe1";
fe2->dvb.name = "netup_fe2";
fe0->dvb.frontend = dvb_attach(cxd2841er_attach_s,
&demod_config, &ndev->i2c[num].adap);
if (fe0->dvb.frontend == NULL) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): unable to attach DVB-S/S2 frontend\n",
__func__);
goto frontend_detach;
}
horus3a_conf.set_tuner_priv = &ndev->dma[num];
if (!dvb_attach(horus3a_attach, fe0->dvb.frontend,
&horus3a_conf, &ndev->i2c[num].adap)) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): unable to attach DVB-S/S2 tuner frontend\n",
__func__);
goto frontend_detach;
}
if (!dvb_attach(lnbh25_attach, fe0->dvb.frontend,
&lnbh25_conf, &ndev->i2c[num].adap)) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): unable to attach SEC frontend\n", __func__);
goto frontend_detach;
}
/* DVB-T/T2 frontend */
fe1->dvb.frontend = dvb_attach(cxd2841er_attach_t,
&demod_config, &ndev->i2c[num].adap);
if (fe1->dvb.frontend == NULL) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): unable to attach DVB-T frontend\n", __func__);
goto frontend_detach;
}
fe1->dvb.frontend->id = 1;
ascot2e_conf.set_tuner_priv = &ndev->dma[num];
if (!dvb_attach(ascot2e_attach, fe1->dvb.frontend,
&ascot2e_conf, &ndev->i2c[num].adap)) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): unable to attach DVB-T tuner frontend\n",
__func__);
goto frontend_detach;
}
/* DVB-C/C2 frontend */
fe2->dvb.frontend = dvb_attach(cxd2841er_attach_c,
&demod_config, &ndev->i2c[num].adap);
if (fe2->dvb.frontend == NULL) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): unable to attach DVB-C frontend\n", __func__);
goto frontend_detach;
}
fe2->dvb.frontend->id = 2;
if (!dvb_attach(ascot2e_attach, fe2->dvb.frontend,
&ascot2e_conf, &ndev->i2c[num].adap)) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): unable to attach DVB-T/C tuner frontend\n",
__func__);
goto frontend_detach;
}
if (vb2_dvb_register_bus(&ndev->frontends[num],
THIS_MODULE, NULL,
&ndev->pci_dev->dev, adapter_nr, 1)) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): unable to register DVB bus %d\n",
__func__, num);
goto frontend_detach;
}
dev_info(&ndev->pci_dev->dev, "DVB init done, num=%d\n", num);
return 0;
frontend_detach:
vb2_dvb_dealloc_frontends(&ndev->frontends[num]);
return -EINVAL;
}
static void netup_unidvb_dvb_fini(struct netup_unidvb_dev *ndev, int num)
{
if (num < 0 || num > 1) {
dev_err(&ndev->pci_dev->dev,
"%s(): unable to unregister DVB bus %d\n",
__func__, num);
return;
}
vb2_dvb_unregister_bus(&ndev->frontends[num]);
dev_info(&ndev->pci_dev->dev,
"%s(): DVB bus %d unregistered\n", __func__, num);
}
static int netup_unidvb_dvb_setup(struct netup_unidvb_dev *ndev)
{
int res;
res = netup_unidvb_dvb_init(ndev, 0);
if (res)
return res;
res = netup_unidvb_dvb_init(ndev, 1);
if (res) {
netup_unidvb_dvb_fini(ndev, 0);
return res;
}
return 0;
}
static int netup_unidvb_ring_copy(struct netup_dma *dma,
struct netup_unidvb_buffer *buf)
{
u32 copy_bytes, ring_bytes;
u32 buff_bytes = NETUP_DMA_PACKETS_COUNT * 188 - buf->size;
u8 *p = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
struct netup_unidvb_dev *ndev = dma->ndev;
if (p == NULL) {
dev_err(&ndev->pci_dev->dev,
"%s(): buffer is NULL\n", __func__);
return -EINVAL;
}
p += buf->size;
if (dma->data_offset + dma->data_size > dma->ring_buffer_size) {
ring_bytes = dma->ring_buffer_size - dma->data_offset;
copy_bytes = (ring_bytes > buff_bytes) ?
buff_bytes : ring_bytes;
memcpy_fromio(p, (u8 __iomem *)(dma->addr_virt + dma->data_offset), copy_bytes);
p += copy_bytes;
buf->size += copy_bytes;
buff_bytes -= copy_bytes;
dma->data_size -= copy_bytes;
dma->data_offset += copy_bytes;
if (dma->data_offset == dma->ring_buffer_size)
dma->data_offset = 0;
}
if (buff_bytes > 0) {
ring_bytes = dma->data_size;
copy_bytes = (ring_bytes > buff_bytes) ?
buff_bytes : ring_bytes;
memcpy_fromio(p, (u8 __iomem *)(dma->addr_virt + dma->data_offset), copy_bytes);
buf->size += copy_bytes;
dma->data_size -= copy_bytes;
dma->data_offset += copy_bytes;
if (dma->data_offset == dma->ring_buffer_size)
dma->data_offset = 0;
}
return 0;
}
static void netup_unidvb_dma_worker(struct work_struct *work)
{
struct netup_dma *dma = container_of(work, struct netup_dma, work);
struct netup_unidvb_dev *ndev = dma->ndev;
struct netup_unidvb_buffer *buf;
unsigned long flags;
spin_lock_irqsave(&dma->lock, flags);
if (dma->data_size == 0) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): data_size == 0\n", __func__);
goto work_done;
}
while (dma->data_size > 0) {
if (list_empty(&dma->free_buffers)) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): no free buffers\n", __func__);
goto work_done;
}
buf = list_first_entry(&dma->free_buffers,
struct netup_unidvb_buffer, list);
if (buf->size >= NETUP_DMA_PACKETS_COUNT * 188) {
dev_dbg(&ndev->pci_dev->dev,
"%s(): buffer overflow, size %d\n",
__func__, buf->size);
goto work_done;
}
if (netup_unidvb_ring_copy(dma, buf))
goto work_done;
if (buf->size == NETUP_DMA_PACKETS_COUNT * 188) {
list_del(&buf->list);
dev_dbg(&ndev->pci_dev->dev,
"%s(): buffer %p done, size %d\n",
__func__, buf, buf->size);
v4l2_get_timestamp(&buf->vb.timestamp);
vb2_set_plane_payload(&buf->vb.vb2_buf, 0, buf->size);
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
}
}
work_done:
dma->data_size = 0;
spin_unlock_irqrestore(&dma->lock, flags);
}
static void netup_unidvb_queue_cleanup(struct netup_dma *dma)
{
struct netup_unidvb_buffer *buf;
unsigned long flags;
spin_lock_irqsave(&dma->lock, flags);
while (!list_empty(&dma->free_buffers)) {
buf = list_first_entry(&dma->free_buffers,
struct netup_unidvb_buffer, list);
list_del(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
}
spin_unlock_irqrestore(&dma->lock, flags);
}
static void netup_unidvb_dma_timeout(unsigned long data)
{
struct netup_dma *dma = (struct netup_dma *)data;
struct netup_unidvb_dev *ndev = dma->ndev;
dev_dbg(&ndev->pci_dev->dev, "%s()\n", __func__);
netup_unidvb_queue_cleanup(dma);
}
static int netup_unidvb_dma_init(struct netup_unidvb_dev *ndev, int num)
{
struct netup_dma *dma;
struct device *dev = &ndev->pci_dev->dev;
if (num < 0 || num > 1) {
dev_err(dev, "%s(): unable to register DMA%d\n",
__func__, num);
return -ENODEV;
}
dma = &ndev->dma[num];
dev_info(dev, "%s(): starting DMA%d\n", __func__, num);
dma->num = num;
dma->ndev = ndev;
spin_lock_init(&dma->lock);
INIT_WORK(&dma->work, netup_unidvb_dma_worker);
INIT_LIST_HEAD(&dma->free_buffers);
dma->timeout.function = netup_unidvb_dma_timeout;
dma->timeout.data = (unsigned long)dma;
init_timer(&dma->timeout);
dma->ring_buffer_size = ndev->dma_size / 2;
dma->addr_virt = ndev->dma_virt + dma->ring_buffer_size * num;
dma->addr_phys = (dma_addr_t)((u64)ndev->dma_phys +
dma->ring_buffer_size * num);
dev_info(dev, "%s(): DMA%d buffer virt/phys 0x%p/0x%llx size %d\n",
__func__, num, dma->addr_virt,
(unsigned long long)dma->addr_phys,
dma->ring_buffer_size);
memset_io((u8 __iomem *)dma->addr_virt, 0, dma->ring_buffer_size);
dma->addr_last = dma->addr_phys;
dma->high_addr = (u32)(dma->addr_phys & 0xC0000000);
dma->regs = (struct netup_dma_regs __iomem *)(num == 0 ?
ndev->bmmio0 + NETUP_DMA0_ADDR :
ndev->bmmio0 + NETUP_DMA1_ADDR);
writel((NETUP_DMA_BLOCKS_COUNT << 24) |
(NETUP_DMA_PACKETS_COUNT << 8) | 188, &dma->regs->size);
writel((u32)(dma->addr_phys & 0x3FFFFFFF), &dma->regs->start_addr_lo);
writel(0, &dma->regs->start_addr_hi);
writel(dma->high_addr, ndev->bmmio0 + 0x1000);
writel(375000000, &dma->regs->timeout);
msleep(1000);
writel(BIT_DMA_IRQ, &dma->regs->ctrlstat_clear);
return 0;
}
static void netup_unidvb_dma_fini(struct netup_unidvb_dev *ndev, int num)
{
struct netup_dma *dma;
if (num < 0 || num > 1)
return;
dev_dbg(&ndev->pci_dev->dev, "%s(): num %d\n", __func__, num);
dma = &ndev->dma[num];
netup_unidvb_dma_enable(dma, 0);
msleep(50);
cancel_work_sync(&dma->work);
del_timer(&dma->timeout);
}
static int netup_unidvb_dma_setup(struct netup_unidvb_dev *ndev)
{
int res;
res = netup_unidvb_dma_init(ndev, 0);
if (res)
return res;
res = netup_unidvb_dma_init(ndev, 1);
if (res) {
netup_unidvb_dma_fini(ndev, 0);
return res;
}
netup_unidvb_dma_enable(&ndev->dma[0], 0);
netup_unidvb_dma_enable(&ndev->dma[1], 0);
return 0;
}
static int netup_unidvb_ci_setup(struct netup_unidvb_dev *ndev,
struct pci_dev *pci_dev)
{
int res;
writew(NETUP_UNIDVB_IRQ_CI, ndev->bmmio0 + REG_IMASK_SET);
res = netup_unidvb_ci_register(ndev, 0, pci_dev);
if (res)
return res;
res = netup_unidvb_ci_register(ndev, 1, pci_dev);
if (res)
netup_unidvb_ci_unregister(ndev, 0);
return res;
}
static int netup_unidvb_request_mmio(struct pci_dev *pci_dev)
{
if (!request_mem_region(pci_resource_start(pci_dev, 0),
pci_resource_len(pci_dev, 0), NETUP_UNIDVB_NAME)) {
dev_err(&pci_dev->dev,
"%s(): unable to request MMIO bar 0 at 0x%llx\n",
__func__,
(unsigned long long)pci_resource_start(pci_dev, 0));
return -EBUSY;
}
if (!request_mem_region(pci_resource_start(pci_dev, 1),
pci_resource_len(pci_dev, 1), NETUP_UNIDVB_NAME)) {
dev_err(&pci_dev->dev,
"%s(): unable to request MMIO bar 1 at 0x%llx\n",
__func__,
(unsigned long long)pci_resource_start(pci_dev, 1));
release_mem_region(pci_resource_start(pci_dev, 0),
pci_resource_len(pci_dev, 0));
return -EBUSY;
}
return 0;
}
static int netup_unidvb_request_modules(struct device *dev)
{
static const char * const modules[] = {
"lnbh25", "ascot2e", "horus3a", "cxd2841er", NULL
};
const char * const *curr_mod = modules;
int err;
while (*curr_mod != NULL) {
err = request_module(*curr_mod);
if (err) {
dev_warn(dev, "request_module(%s) failed: %d\n",
*curr_mod, err);
}
++curr_mod;
}
return 0;
}
static int netup_unidvb_initdev(struct pci_dev *pci_dev,
const struct pci_device_id *pci_id)
{
u8 board_revision;
u16 board_vendor;
struct netup_unidvb_dev *ndev;
int old_firmware = 0;
netup_unidvb_request_modules(&pci_dev->dev);
/* Check card revision */
if (pci_dev->revision != NETUP_PCI_DEV_REVISION) {
dev_err(&pci_dev->dev,
"netup_unidvb: expected card revision %d, got %d\n",
NETUP_PCI_DEV_REVISION, pci_dev->revision);
dev_err(&pci_dev->dev,
"Please upgrade firmware!\n");
dev_err(&pci_dev->dev,
"Instructions on http://www.netup.tv\n");
old_firmware = 1;
spi_enable = 1;
}
/* allocate device context */
ndev = kzalloc(sizeof(*ndev), GFP_KERNEL);
if (!ndev)
goto dev_alloc_err;
memset(ndev, 0, sizeof(*ndev));
ndev->old_fw = old_firmware;
ndev->wq = create_singlethread_workqueue(NETUP_UNIDVB_NAME);
if (!ndev->wq) {
dev_err(&pci_dev->dev,
"%s(): unable to create workqueue\n", __func__);
goto wq_create_err;
}
ndev->pci_dev = pci_dev;
ndev->pci_bus = pci_dev->bus->number;
ndev->pci_slot = PCI_SLOT(pci_dev->devfn);
ndev->pci_func = PCI_FUNC(pci_dev->devfn);
ndev->board_num = ndev->pci_bus*10 + ndev->pci_slot;
pci_set_drvdata(pci_dev, ndev);
/* PCI init */
dev_info(&pci_dev->dev, "%s(): PCI device (%d). Bus:0x%x Slot:0x%x\n",
__func__, ndev->board_num, ndev->pci_bus, ndev->pci_slot);
if (pci_enable_device(pci_dev)) {
dev_err(&pci_dev->dev, "%s(): pci_enable_device failed\n",
__func__);
goto pci_enable_err;
}
/* read PCI info */
pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &board_revision);
pci_read_config_word(pci_dev, PCI_VENDOR_ID, &board_vendor);
if (board_vendor != NETUP_VENDOR_ID) {
dev_err(&pci_dev->dev, "%s(): unknown board vendor 0x%x",
__func__, board_vendor);
goto pci_detect_err;
}
dev_info(&pci_dev->dev,
"%s(): board vendor 0x%x, revision 0x%x\n",
__func__, board_vendor, board_revision);
pci_set_master(pci_dev);
if (pci_set_dma_mask(pci_dev, 0xffffffff) < 0) {
dev_err(&pci_dev->dev,
"%s(): 32bit PCI DMA is not supported\n", __func__);
goto pci_detect_err;
}
dev_info(&pci_dev->dev, "%s(): using 32bit PCI DMA\n", __func__);
/* Clear "no snoop" and "relaxed ordering" bits, use default MRRS. */
pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL,
PCI_EXP_DEVCTL_READRQ | PCI_EXP_DEVCTL_RELAX_EN |
PCI_EXP_DEVCTL_NOSNOOP_EN, 0);
/* Adjust PCIe completion timeout. */
pcie_capability_clear_and_set_word(pci_dev,
PCI_EXP_DEVCTL2, 0xf, 0x2);
if (netup_unidvb_request_mmio(pci_dev)) {
dev_err(&pci_dev->dev,
"%s(): unable to request MMIO regions\n", __func__);
goto pci_detect_err;
}
ndev->lmmio0 = ioremap(pci_resource_start(pci_dev, 0),
pci_resource_len(pci_dev, 0));
if (!ndev->lmmio0) {
dev_err(&pci_dev->dev,
"%s(): unable to remap MMIO bar 0\n", __func__);
goto pci_bar0_error;
}
ndev->lmmio1 = ioremap(pci_resource_start(pci_dev, 1),
pci_resource_len(pci_dev, 1));
if (!ndev->lmmio1) {
dev_err(&pci_dev->dev,
"%s(): unable to remap MMIO bar 1\n", __func__);
goto pci_bar1_error;
}
ndev->bmmio0 = (u8 __iomem *)ndev->lmmio0;
ndev->bmmio1 = (u8 __iomem *)ndev->lmmio1;
dev_info(&pci_dev->dev,
"%s(): PCI MMIO at 0x%p (%d); 0x%p (%d); IRQ %d",
__func__,
ndev->lmmio0, (u32)pci_resource_len(pci_dev, 0),
ndev->lmmio1, (u32)pci_resource_len(pci_dev, 1),
pci_dev->irq);
if (request_irq(pci_dev->irq, netup_unidvb_isr, IRQF_SHARED,
"netup_unidvb", pci_dev) < 0) {
dev_err(&pci_dev->dev,
"%s(): can't get IRQ %d\n", __func__, pci_dev->irq);
goto irq_request_err;
}
ndev->dma_size = 2 * 188 *
NETUP_DMA_BLOCKS_COUNT * NETUP_DMA_PACKETS_COUNT;
ndev->dma_virt = dma_alloc_coherent(&pci_dev->dev,
ndev->dma_size, &ndev->dma_phys, GFP_KERNEL);
if (!ndev->dma_virt) {
dev_err(&pci_dev->dev, "%s(): unable to allocate DMA buffer\n",
__func__);
goto dma_alloc_err;
}
netup_unidvb_dev_enable(ndev);
if (spi_enable && netup_spi_init(ndev)) {
dev_warn(&pci_dev->dev,
"netup_unidvb: SPI flash setup failed\n");
goto spi_setup_err;
}
if (old_firmware) {
dev_err(&pci_dev->dev,
"netup_unidvb: card initialization was incomplete\n");
return 0;
}
if (netup_i2c_register(ndev)) {
dev_err(&pci_dev->dev, "netup_unidvb: I2C setup failed\n");
goto i2c_setup_err;
}
/* enable I2C IRQs */
writew(NETUP_UNIDVB_IRQ_I2C0 | NETUP_UNIDVB_IRQ_I2C1,
ndev->bmmio0 + REG_IMASK_SET);
usleep_range(5000, 10000);
if (netup_unidvb_dvb_setup(ndev)) {
dev_err(&pci_dev->dev, "netup_unidvb: DVB setup failed\n");
goto dvb_setup_err;
}
if (netup_unidvb_ci_setup(ndev, pci_dev)) {
dev_err(&pci_dev->dev, "netup_unidvb: CI setup failed\n");
goto ci_setup_err;
}
if (netup_unidvb_dma_setup(ndev)) {
dev_err(&pci_dev->dev, "netup_unidvb: DMA setup failed\n");
goto dma_setup_err;
}
dev_info(&pci_dev->dev,
"netup_unidvb: device has been initialized\n");
return 0;
dma_setup_err:
netup_unidvb_ci_unregister(ndev, 0);
netup_unidvb_ci_unregister(ndev, 1);
ci_setup_err:
netup_unidvb_dvb_fini(ndev, 0);
netup_unidvb_dvb_fini(ndev, 1);
dvb_setup_err:
netup_i2c_unregister(ndev);
i2c_setup_err:
if (ndev->spi)
netup_spi_release(ndev);
spi_setup_err:
dma_free_coherent(&pci_dev->dev, ndev->dma_size,
ndev->dma_virt, ndev->dma_phys);
dma_alloc_err:
free_irq(pci_dev->irq, pci_dev);
irq_request_err:
iounmap(ndev->lmmio1);
pci_bar1_error:
iounmap(ndev->lmmio0);
pci_bar0_error:
release_mem_region(pci_resource_start(pci_dev, 0),
pci_resource_len(pci_dev, 0));
release_mem_region(pci_resource_start(pci_dev, 1),
pci_resource_len(pci_dev, 1));
pci_detect_err:
pci_disable_device(pci_dev);
pci_enable_err:
pci_set_drvdata(pci_dev, NULL);
destroy_workqueue(ndev->wq);
wq_create_err:
kfree(ndev);
dev_alloc_err:
dev_err(&pci_dev->dev,
"%s(): failed to initizalize device\n", __func__);
return -EIO;
}
static void netup_unidvb_finidev(struct pci_dev *pci_dev)
{
struct netup_unidvb_dev *ndev = pci_get_drvdata(pci_dev);
dev_info(&pci_dev->dev, "%s(): trying to stop device\n", __func__);
if (!ndev->old_fw) {
netup_unidvb_dma_fini(ndev, 0);
netup_unidvb_dma_fini(ndev, 1);
netup_unidvb_ci_unregister(ndev, 0);
netup_unidvb_ci_unregister(ndev, 1);
netup_unidvb_dvb_fini(ndev, 0);
netup_unidvb_dvb_fini(ndev, 1);
netup_i2c_unregister(ndev);
}
if (ndev->spi)
netup_spi_release(ndev);
writew(0xffff, ndev->bmmio0 + REG_IMASK_CLEAR);
dma_free_coherent(&ndev->pci_dev->dev, ndev->dma_size,
ndev->dma_virt, ndev->dma_phys);
free_irq(pci_dev->irq, pci_dev);
iounmap(ndev->lmmio0);
iounmap(ndev->lmmio1);
release_mem_region(pci_resource_start(pci_dev, 0),
pci_resource_len(pci_dev, 0));
release_mem_region(pci_resource_start(pci_dev, 1),
pci_resource_len(pci_dev, 1));
pci_disable_device(pci_dev);
pci_set_drvdata(pci_dev, NULL);
destroy_workqueue(ndev->wq);
kfree(ndev);
dev_info(&pci_dev->dev,
"%s(): device has been successfully stopped\n", __func__);
}
static struct pci_device_id netup_unidvb_pci_tbl[] = {
{ PCI_DEVICE(0x1b55, 0x18f6) },
{ 0, }
};
MODULE_DEVICE_TABLE(pci, netup_unidvb_pci_tbl);
static struct pci_driver netup_unidvb_pci_driver = {
.name = "netup_unidvb",
.id_table = netup_unidvb_pci_tbl,
.probe = netup_unidvb_initdev,
.remove = netup_unidvb_finidev,
.suspend = NULL,
.resume = NULL,
};
static int __init netup_unidvb_init(void)
{
return pci_register_driver(&netup_unidvb_pci_driver);
}
static void __exit netup_unidvb_fini(void)
{
pci_unregister_driver(&netup_unidvb_pci_driver);
}
module_init(netup_unidvb_init);
module_exit(netup_unidvb_fini);