2 * This file is part of linux driver the digital TV devices equipped with B2C2 FlexcopII(b)/III
4 * flexcop-pci.c - covers the PCI part including DMA transfers.
6 * see flexcop.c for copyright information.
9 #define FC_LOG_PREFIX "flexcop-pci"
10 #include "flexcop-common.h"
12 static int enable_pid_filtering = 0;
13 module_param(enable_pid_filtering, int, 0444);
14 MODULE_PARM_DESC(enable_pid_filtering, "enable hardware pid filtering: supported values: 0 (fullts), 1");
16 #ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
17 #define dprintk(level,args...) \
18 do { if ((debug & level)) printk(args); } while (0)
21 #define dprintk(level,args...)
22 #define DEBSTATUS " (debugging is not enabled)"
25 #define deb_info(args...) dprintk(0x01,args)
26 #define deb_reg(args...) dprintk(0x02,args)
27 #define deb_ts(args...) dprintk(0x04,args)
28 #define deb_irq(args...) dprintk(0x08,args)
31 module_param(debug, int, 0644);
32 MODULE_PARM_DESC(debug, "set debug level (1=info,2=regs,4=TS,8=irqdma (|-able))." DEBSTATUS);
34 #define DRIVER_VERSION "0.1"
35 #define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV PCI Driver"
36 #define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de>"
41 #define FC_PCI_INIT 0x01
42 #define FC_PCI_DMA_INIT 0x02
47 /* buffersize (at least for DMA1, need to be % 188 == 0,
48 * this is logic is required */
49 #define FC_DEFAULT_DMA1_BUFSIZE (1280 * 188)
50 #define FC_DEFAULT_DMA2_BUFSIZE (10 * 188)
51 struct flexcop_dma dma[2];
53 int active_dma1_addr; /* 0 = addr0 of dma1; 1 = addr1 of dma1 */
54 u32 last_dma1_cur_pos; /* position of the pointer last time the timer/packet irq occured */
56 struct flexcop_device *fc_dev;
59 static int lastwreg,lastwval,lastrreg,lastrval;
61 static flexcop_ibi_value flexcop_pci_read_ibi_reg (struct flexcop_device *fc, flexcop_ibi_register r)
63 struct flexcop_pci *fc_pci = fc->bus_specific;
65 v.raw = readl(fc_pci->io_mem + r);
67 if (lastrreg != r || lastrval != v.raw) {
68 lastrreg = r; lastrval = v.raw;
69 deb_reg("new rd: %3x: %08x\n",r,v.raw);
75 static int flexcop_pci_write_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register r, flexcop_ibi_value v)
77 struct flexcop_pci *fc_pci = fc->bus_specific;
79 if (lastwreg != r || lastwval != v.raw) {
80 lastwreg = r; lastwval = v.raw;
81 deb_reg("new wr: %3x: %08x\n",r,v.raw);
84 writel(v.raw, fc_pci->io_mem + r);
88 /* When PID filtering is turned on, we use the timer IRQ, because small amounts
89 * of data need to be passed to the user space instantly as well. When PID
90 * filtering is turned off, we use the page-change-IRQ */
91 static irqreturn_t flexcop_pci_irq(int irq, void *dev_id, struct pt_regs *regs)
93 struct flexcop_pci *fc_pci = dev_id;
94 struct flexcop_device *fc = fc_pci->fc_dev;
95 flexcop_ibi_value v = fc->read_ibi_reg(fc,irq_20c);
97 deb_irq("irq: %08x cur_addr: %08x (%d), our addrs. 1: %08x 2: %08x; 0x000: "
98 "%08x, 0x00c: %08x\n",v.raw,
99 fc->read_ibi_reg(fc,dma1_008).dma_0x8.dma_cur_addr << 2,
100 fc_pci->active_dma1_addr,
101 fc_pci->dma[0].dma_addr0,fc_pci->dma[0].dma_addr1,
102 fc->read_ibi_reg(fc,dma1_000).raw,
103 fc->read_ibi_reg(fc,dma1_00c).raw);
105 if (v.irq_20c.DMA1_IRQ_Status == 1) {
106 if (fc_pci->active_dma1_addr == 0)
107 flexcop_pass_dmx_packets(fc_pci->fc_dev,fc_pci->dma[0].cpu_addr0,fc_pci->dma[0].size / 188);
109 flexcop_pass_dmx_packets(fc_pci->fc_dev,fc_pci->dma[0].cpu_addr1,fc_pci->dma[0].size / 188);
111 deb_irq("page change to page: %d\n",!fc_pci->active_dma1_addr);
112 fc_pci->active_dma1_addr = !fc_pci->active_dma1_addr;
113 } else if (v.irq_20c.DMA1_Timer_Status == 1) {
114 /* for the timer IRQ we only can use buffer dmx feeding, because we don't have
115 * complete TS packets when reading from the DMA memory */
116 dma_addr_t cur_addr =
117 fc->read_ibi_reg(fc,dma1_008).dma_0x8.dma_cur_addr << 2;
118 u32 cur_pos = cur_addr - fc_pci->dma[0].dma_addr0;
120 /* buffer end was reached, restarted from the beginning
121 * pass the data from last_cur_pos to the buffer end to the demux
123 if (cur_pos < fc_pci->last_dma1_cur_pos) {
124 flexcop_pass_dmx_data(fc_pci->fc_dev,
125 fc_pci->dma[0].cpu_addr0 + fc_pci->last_dma1_cur_pos,
126 (fc_pci->dma[0].size*2 - 1) - fc_pci->last_dma1_cur_pos);
127 fc_pci->last_dma1_cur_pos = 0;
130 if (cur_pos > fc_pci->last_dma1_cur_pos) {
131 flexcop_pass_dmx_data(fc_pci->fc_dev,
132 fc_pci->dma[0].cpu_addr0 + fc_pci->last_dma1_cur_pos,
133 cur_pos - fc_pci->last_dma1_cur_pos);
136 fc_pci->last_dma1_cur_pos = cur_pos;
139 /* packet count would be ideal for hw filtering, but it isn't working. Either
140 * the data book is wrong, or I'm unable to read it correctly */
142 /* if (v.irq_20c.DMA1_Size_IRQ_Status == 1) { packet counter */
147 static int flexcop_pci_stream_control(struct flexcop_device *fc, int onoff)
149 struct flexcop_pci *fc_pci = fc->bus_specific;
151 flexcop_dma_config(fc,&fc_pci->dma[0],FC_DMA_1,FC_DMA_SUBADDR_0 | FC_DMA_SUBADDR_1);
152 flexcop_dma_config(fc,&fc_pci->dma[1],FC_DMA_2,FC_DMA_SUBADDR_0 | FC_DMA_SUBADDR_1);
153 flexcop_dma_config_timer(fc,FC_DMA_1,1);
155 if (fc_pci->fc_dev->pid_filtering) {
156 fc_pci->last_dma1_cur_pos = 0;
157 flexcop_dma_control_timer_irq(fc,FC_DMA_1,1);
159 fc_pci->active_dma1_addr = 0;
160 flexcop_dma_control_size_irq(fc,FC_DMA_1,1);
163 /* flexcop_dma_config_packet_count(fc,FC_DMA_1,0xc0);
164 flexcop_dma_control_packet_irq(fc,FC_DMA_1,1); */
166 deb_irq("irqs enabled\n");
168 if (fc_pci->fc_dev->pid_filtering)
169 flexcop_dma_control_timer_irq(fc,FC_DMA_1,0);
171 flexcop_dma_control_size_irq(fc,FC_DMA_1,0);
173 // flexcop_dma_control_packet_irq(fc,FC_DMA_1,0);
174 deb_irq("irqs disabled\n");
180 static int flexcop_pci_dma_init(struct flexcop_pci *fc_pci)
183 if ((ret = flexcop_dma_allocate(fc_pci->pdev,&fc_pci->dma[0],FC_DEFAULT_DMA1_BUFSIZE)) != 0)
186 if ((ret = flexcop_dma_allocate(fc_pci->pdev,&fc_pci->dma[1],FC_DEFAULT_DMA2_BUFSIZE)) != 0)
189 flexcop_sram_set_dest(fc_pci->fc_dev,FC_SRAM_DEST_MEDIA | FC_SRAM_DEST_NET, FC_SRAM_DEST_TARGET_DMA1);
190 flexcop_sram_set_dest(fc_pci->fc_dev,FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI, FC_SRAM_DEST_TARGET_DMA2);
192 fc_pci->init_state |= FC_PCI_DMA_INIT;
195 flexcop_dma_free(&fc_pci->dma[0]);
201 static void flexcop_pci_dma_exit(struct flexcop_pci *fc_pci)
203 if (fc_pci->init_state & FC_PCI_DMA_INIT) {
204 flexcop_dma_free(&fc_pci->dma[0]);
205 flexcop_dma_free(&fc_pci->dma[1]);
207 fc_pci->init_state &= ~FC_PCI_DMA_INIT;
210 static int flexcop_pci_init(struct flexcop_pci *fc_pci)
215 pci_read_config_byte(fc_pci->pdev, PCI_CLASS_REVISION, &card_rev);
216 info("card revision %x", card_rev);
218 if ((ret = pci_enable_device(fc_pci->pdev)) != 0)
221 pci_set_master(fc_pci->pdev);
223 /* enable interrupts */
224 // pci_write_config_dword(pdev, 0x6c, 0x8000);
226 if ((ret = pci_request_regions(fc_pci->pdev, DRIVER_NAME)) != 0)
227 goto err_pci_disable_device;
229 fc_pci->io_mem = pci_iomap(fc_pci->pdev, 0, 0x800);
231 if (!fc_pci->io_mem) {
232 err("cannot map io memory\n");
234 goto err_pci_release_regions;
237 pci_set_drvdata(fc_pci->pdev, fc_pci);
239 if ((ret = request_irq(fc_pci->pdev->irq, flexcop_pci_irq,
240 SA_SHIRQ, DRIVER_NAME, fc_pci)) != 0)
241 goto err_pci_iounmap;
243 fc_pci->init_state |= FC_PCI_INIT;
247 pci_iounmap(fc_pci->pdev, fc_pci->io_mem);
248 pci_set_drvdata(fc_pci->pdev, NULL);
249 err_pci_release_regions:
250 pci_release_regions(fc_pci->pdev);
251 err_pci_disable_device:
252 pci_disable_device(fc_pci->pdev);
258 static void flexcop_pci_exit(struct flexcop_pci *fc_pci)
260 if (fc_pci->init_state & FC_PCI_INIT) {
261 free_irq(fc_pci->pdev->irq, fc_pci);
262 pci_iounmap(fc_pci->pdev, fc_pci->io_mem);
263 pci_set_drvdata(fc_pci->pdev, NULL);
264 pci_release_regions(fc_pci->pdev);
265 pci_disable_device(fc_pci->pdev);
267 fc_pci->init_state &= ~FC_PCI_INIT;
271 static int flexcop_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
273 struct flexcop_device *fc;
274 struct flexcop_pci *fc_pci;
277 if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_pci))) == NULL) {
278 err("out of memory\n");
282 /* general flexcop init */
283 fc_pci = fc->bus_specific;
286 fc->read_ibi_reg = flexcop_pci_read_ibi_reg;
287 fc->write_ibi_reg = flexcop_pci_write_ibi_reg;
288 fc->i2c_request = flexcop_i2c_request;
289 fc->get_mac_addr = flexcop_eeprom_check_mac_addr;
291 fc->stream_control = flexcop_pci_stream_control;
293 fc->pid_filtering = enable_pid_filtering;
294 fc->bus_type = FC_PCI;
296 fc->dev = &pdev->dev;
298 /* bus specific part */
300 if ((ret = flexcop_pci_init(fc_pci)) != 0)
304 if ((ret = flexcop_device_initialize(fc)) != 0)
308 if ((ret = flexcop_pci_dma_init(fc_pci)) != 0)
313 flexcop_device_exit(fc);
315 flexcop_pci_exit(fc_pci);
317 flexcop_device_kfree(fc);
322 /* in theory every _exit function should be called exactly two times,
323 * here and in the bail-out-part of the _init-function
325 static void flexcop_pci_remove(struct pci_dev *pdev)
327 struct flexcop_pci *fc_pci = pci_get_drvdata(pdev);
329 flexcop_pci_dma_exit(fc_pci);
330 flexcop_device_exit(fc_pci->fc_dev);
331 flexcop_pci_exit(fc_pci);
332 flexcop_device_kfree(fc_pci->fc_dev);
335 static struct pci_device_id flexcop_pci_tbl[] = {
336 { PCI_DEVICE(0x13d0, 0x2103) },
337 /* { PCI_DEVICE(0x13d0, 0x2200) }, PCI FlexCopIII ? */
341 MODULE_DEVICE_TABLE(pci, flexcop_pci_tbl);
343 static struct pci_driver flexcop_pci_driver = {
344 .name = "Technisat/B2C2 FlexCop II/IIb/III PCI",
345 .id_table = flexcop_pci_tbl,
346 .probe = flexcop_pci_probe,
347 .remove = flexcop_pci_remove,
350 static int __init flexcop_pci_module_init(void)
352 return pci_register_driver(&flexcop_pci_driver);
355 static void __exit flexcop_pci_module_exit(void)
357 pci_unregister_driver(&flexcop_pci_driver);
360 module_init(flexcop_pci_module_init);
361 module_exit(flexcop_pci_module_exit);
363 MODULE_AUTHOR(DRIVER_AUTHOR);
364 MODULE_DESCRIPTION(DRIVER_NAME);
365 MODULE_LICENSE("GPL");