/* $Id: divasmain.c,v 1.55.4.6 2005/02/09 19:28:20 armin Exp $ * * Low level driver for Eicon DIVA Server ISDN cards. * * Copyright 2000-2003 by Armin Schindler (mac@melware.de) * Copyright 2000-2003 Cytronics & Melware (info@melware.de) * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. */ #include #include #include #include #include #include #include #include #include #include #include #include "platform.h" #undef ID_MASK #undef N_DATA #include "pc.h" #include "di_defs.h" #include "divasync.h" #include "diva.h" #include "di.h" #include "io.h" #include "xdi_msg.h" #include "xdi_adapter.h" #include "xdi_vers.h" #include "diva_dma.h" #include "diva_pci.h" static char *main_revision = "$Revision: 1.55.4.6 $"; static int major; static int dbgmask; MODULE_DESCRIPTION("Kernel driver for Eicon DIVA Server cards"); MODULE_AUTHOR("Cytronics & Melware, Eicon Networks"); MODULE_LICENSE("GPL"); module_param(dbgmask, int, 0); MODULE_PARM_DESC(dbgmask, "initial debug mask"); static char *DRIVERNAME = "Eicon DIVA Server driver (http://www.melware.net)"; static char *DRIVERLNAME = "divas"; static char *DEVNAME = "Divas"; char *DRIVERRELEASE_DIVAS = "2.0"; extern irqreturn_t diva_os_irq_wrapper(int irq, void *context); extern int create_divas_proc(void); extern void remove_divas_proc(void); extern void diva_get_vserial_number(PISDN_ADAPTER IoAdapter, char *buf); extern int divasfunc_init(int dbgmask); extern void divasfunc_exit(void); typedef struct _diva_os_thread_dpc { struct tasklet_struct divas_task; diva_os_soft_isr_t *psoft_isr; } diva_os_thread_dpc_t; /* -------------------------------------------------------------------------- PCI driver interface section -------------------------------------------------------------------------- */ /* vendor, device Vendor and device ID to match (or PCI_ANY_ID) subvendor, Subsystem vendor and device ID to match (or PCI_ANY_ID) subdevice class, Device class to match. The class_mask tells which bits class_mask of the class are honored during the comparison. driver_data Data private to the driver. */ #if !defined(PCI_DEVICE_ID_EICON_MAESTRAP_2) #define PCI_DEVICE_ID_EICON_MAESTRAP_2 0xE015 #endif #if !defined(PCI_DEVICE_ID_EICON_4BRI_VOIP) #define PCI_DEVICE_ID_EICON_4BRI_VOIP 0xE016 #endif #if !defined(PCI_DEVICE_ID_EICON_4BRI_2_VOIP) #define PCI_DEVICE_ID_EICON_4BRI_2_VOIP 0xE017 #endif #if !defined(PCI_DEVICE_ID_EICON_BRI2M_2) #define PCI_DEVICE_ID_EICON_BRI2M_2 0xE018 #endif #if !defined(PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP) #define PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP 0xE019 #endif #if !defined(PCI_DEVICE_ID_EICON_2F) #define PCI_DEVICE_ID_EICON_2F 0xE01A #endif #if !defined(PCI_DEVICE_ID_EICON_BRI2M_2_VOIP) #define PCI_DEVICE_ID_EICON_BRI2M_2_VOIP 0xE01B #endif /* This table should be sorted by PCI device ID */ static const struct pci_device_id divas_pci_tbl[] = { /* Diva Server BRI-2M PCI 0xE010 */ { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRA), CARDTYPE_MAESTRA_PCI }, /* Diva Server 4BRI-8M PCI 0xE012 */ { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAQ), CARDTYPE_DIVASRV_Q_8M_PCI }, /* Diva Server 4BRI-8M 2.0 PCI 0xE013 */ { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAQ_U), CARDTYPE_DIVASRV_Q_8M_V2_PCI }, /* Diva Server PRI-30M PCI 0xE014 */ { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAP), CARDTYPE_DIVASRV_P_30M_PCI }, /* Diva Server PRI 2.0 adapter 0xE015 */ { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAP_2), CARDTYPE_DIVASRV_P_30M_V2_PCI }, /* Diva Server Voice 4BRI-8M PCI 0xE016 */ { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_4BRI_VOIP), CARDTYPE_DIVASRV_VOICE_Q_8M_PCI }, /* Diva Server Voice 4BRI-8M 2.0 PCI 0xE017 */ { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_4BRI_2_VOIP), CARDTYPE_DIVASRV_VOICE_Q_8M_V2_PCI }, /* Diva Server BRI-2M 2.0 PCI 0xE018 */ { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_BRI2M_2), CARDTYPE_DIVASRV_B_2M_V2_PCI }, /* Diva Server Voice PRI 2.0 PCI 0xE019 */ { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP), CARDTYPE_DIVASRV_VOICE_P_30M_V2_PCI }, /* Diva Server 2FX 0xE01A */ { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_2F), CARDTYPE_DIVASRV_B_2F_PCI }, /* Diva Server Voice BRI-2M 2.0 PCI 0xE01B */ { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_BRI2M_2_VOIP), CARDTYPE_DIVASRV_VOICE_B_2M_V2_PCI }, { 0, } /* 0 terminated list. */ }; MODULE_DEVICE_TABLE(pci, divas_pci_tbl); static int divas_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); static void divas_remove_one(struct pci_dev *pdev); static struct pci_driver diva_pci_driver = { .name = "divas", .probe = divas_init_one, .remove = divas_remove_one, .id_table = divas_pci_tbl, }; /********************************************************* ** little helper functions *********************************************************/ static char *getrev(const char *revision) { char *rev; char *p; if ((p = strchr(revision, ':'))) { rev = p + 2; p = strchr(rev, '$'); *--p = 0; } else rev = "1.0"; return rev; } void diva_log_info(unsigned char *format, ...) { va_list args; unsigned char line[160]; va_start(args, format); vsnprintf(line, sizeof(line), format, args); va_end(args); printk(KERN_INFO "%s: %s\n", DRIVERLNAME, line); } void divas_get_version(char *p) { char tmprev[32]; strcpy(tmprev, main_revision); sprintf(p, "%s: %s(%s) %s(%s) major=%d\n", DRIVERLNAME, DRIVERRELEASE_DIVAS, getrev(tmprev), diva_xdi_common_code_build, DIVA_BUILD, major); } /* -------------------------------------------------------------------------- PCI Bus services -------------------------------------------------------------------------- */ byte diva_os_get_pci_bus(void *pci_dev_handle) { struct pci_dev *pdev = (struct pci_dev *) pci_dev_handle; return ((byte) pdev->bus->number); } byte diva_os_get_pci_func(void *pci_dev_handle) { struct pci_dev *pdev = (struct pci_dev *) pci_dev_handle; return ((byte) pdev->devfn); } unsigned long divasa_get_pci_irq(unsigned char bus, unsigned char func, void *pci_dev_handle) { unsigned char irq = 0; struct pci_dev *dev = (struct pci_dev *) pci_dev_handle; irq = dev->irq; return ((unsigned long) irq); } unsigned long divasa_get_pci_bar(unsigned char bus, unsigned char func, int bar, void *pci_dev_handle) { unsigned long ret = 0; struct pci_dev *dev = (struct pci_dev *) pci_dev_handle; if (bar < 6) { ret = dev->resource[bar].start; } DBG_TRC(("GOT BAR[%d]=%08x", bar, ret)); { unsigned long type = (ret & 0x00000001); if (type & PCI_BASE_ADDRESS_SPACE_IO) { DBG_TRC((" I/O")); ret &= PCI_BASE_ADDRESS_IO_MASK; } else { DBG_TRC((" memory")); ret &= PCI_BASE_ADDRESS_MEM_MASK; } DBG_TRC((" final=%08x", ret)); } return (ret); } void PCIwrite(byte bus, byte func, int offset, void *data, int length, void *pci_dev_handle) { struct pci_dev *dev = (struct pci_dev *) pci_dev_handle; switch (length) { case 1: /* byte */ pci_write_config_byte(dev, offset, *(unsigned char *) data); break; case 2: /* word */ pci_write_config_word(dev, offset, *(unsigned short *) data); break; case 4: /* dword */ pci_write_config_dword(dev, offset, *(unsigned int *) data); break; default: /* buffer */ if (!(length % 4) && !(length & 0x03)) { /* Copy as dword */ dword *p = (dword *) data; length /= 4; while (length--) { pci_write_config_dword(dev, offset, *(unsigned int *) p++); } } else { /* copy as byte stream */ byte *p = (byte *) data; while (length--) { pci_write_config_byte(dev, offset, *(unsigned char *) p++); } } } } void PCIread(byte bus, byte func, int offset, void *data, int length, void *pci_dev_handle) { struct pci_dev *dev = (struct pci_dev *) pci_dev_handle; switch (length) { case 1: /* byte */ pci_read_config_byte(dev, offset, (unsigned char *) data); break; case 2: /* word */ pci_read_config_word(dev, offset, (unsigned short *) data); break; case 4: /* dword */ pci_read_config_dword(dev, offset, (unsigned int *) data); break; default: /* buffer */ if (!(length % 4) && !(length & 0x03)) { /* Copy as dword */ dword *p = (dword *) data; length /= 4; while (length--) { pci_read_config_dword(dev, offset, (unsigned int *) p++); } } else { /* copy as byte stream */ byte *p = (byte *) data; while (length--) { pci_read_config_byte(dev, offset, (unsigned char *) p++); } } } } /* Init map with DMA pages. It is not problem if some allocations fail - the channels that will not get one DMA page will use standard PIO interface */ static void *diva_pci_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle, void **addr_handle) { void *addr = pci_alloc_consistent(hwdev, size, dma_handle); *addr_handle = addr; return (addr); } void diva_init_dma_map(void *hdev, struct _diva_dma_map_entry **ppmap, int nentries) { struct pci_dev *pdev = (struct pci_dev *) hdev; struct _diva_dma_map_entry *pmap = diva_alloc_dma_map(hdev, nentries); if (pmap) { int i; dma_addr_t dma_handle; void *cpu_addr; void *addr_handle; for (i = 0; i < nentries; i++) { if (!(cpu_addr = diva_pci_alloc_consistent(pdev, PAGE_SIZE, &dma_handle, &addr_handle))) { break; } diva_init_dma_map_entry(pmap, i, cpu_addr, (dword) dma_handle, addr_handle); DBG_TRC(("dma map alloc [%d]=(%08lx:%08x:%08lx)", i, (unsigned long) cpu_addr, (dword) dma_handle, (unsigned long) addr_handle))} } *ppmap = pmap; } /* Free all contained in the map entries and memory used by the map Should be always called after adapter removal from DIDD array */ void diva_free_dma_map(void *hdev, struct _diva_dma_map_entry *pmap) { struct pci_dev *pdev = (struct pci_dev *) hdev; int i; dword phys_addr; void *cpu_addr; dma_addr_t dma_handle; void *addr_handle; for (i = 0; (pmap != NULL); i++) { diva_get_dma_map_entry(pmap, i, &cpu_addr, &phys_addr); if (!cpu_addr) { break; } addr_handle = diva_get_entry_handle(pmap, i); dma_handle = (dma_addr_t) phys_addr; pci_free_consistent(pdev, PAGE_SIZE, addr_handle, dma_handle); DBG_TRC(("dma map free [%d]=(%08lx:%08x:%08lx)", i, (unsigned long) cpu_addr, (dword) dma_handle, (unsigned long) addr_handle)) } diva_free_dma_mapping(pmap); } /********************************************************* ** I/O port utilities *********************************************************/ int diva_os_register_io_port(void *adapter, int on, unsigned long port, unsigned long length, const char *name, int id) { if (on) { if (!request_region(port, length, name)) { DBG_ERR(("A: I/O: can't register port=%08x", port)) return (-1); } } else { release_region(port, length); } return (0); } void __iomem *divasa_remap_pci_bar(diva_os_xdi_adapter_t *a, int id, unsigned long bar, unsigned long area_length) { void __iomem *ret = ioremap(bar, area_length); DBG_TRC(("remap(%08x)->%p", bar, ret)); return (ret); } void divasa_unmap_pci_bar(void __iomem *bar) { if (bar) { iounmap(bar); } } /********************************************************* ** I/O port access *********************************************************/ inline byte inpp(void __iomem *addr) { return (inb((unsigned long) addr)); } inline word inppw(void __iomem *addr) { return (inw((unsigned long) addr)); } inline void inppw_buffer(void __iomem *addr, void *P, int length) { insw((unsigned long) addr, (word *) P, length >> 1); } inline void outppw_buffer(void __iomem *addr, void *P, int length) { outsw((unsigned long) addr, (word *) P, length >> 1); } inline void outppw(void __iomem *addr, word w) { outw(w, (unsigned long) addr); } inline void outpp(void __iomem *addr, word p) { outb(p, (unsigned long) addr); } /* -------------------------------------------------------------------------- IRQ request / remove -------------------------------------------------------------------------- */ int diva_os_register_irq(void *context, byte irq, const char *name) { int result = request_irq(irq, diva_os_irq_wrapper, IRQF_SHARED, name, context); return (result); } void diva_os_remove_irq(void *context, byte irq) { free_irq(irq, context); } /* -------------------------------------------------------------------------- DPC framework implementation -------------------------------------------------------------------------- */ static void diva_os_dpc_proc(unsigned long context) { diva_os_thread_dpc_t *psoft_isr = (diva_os_thread_dpc_t *) context; diva_os_soft_isr_t *pisr = psoft_isr->psoft_isr; (*(pisr->callback)) (pisr, pisr->callback_context); } int diva_os_initialize_soft_isr(diva_os_soft_isr_t *psoft_isr, diva_os_soft_isr_callback_t callback, void *callback_context) { diva_os_thread_dpc_t *pdpc; pdpc = (diva_os_thread_dpc_t *) diva_os_malloc(0, sizeof(*pdpc)); if (!(psoft_isr->object = pdpc)) { return (-1); } memset(pdpc, 0x00, sizeof(*pdpc)); psoft_isr->callback = callback; psoft_isr->callback_context = callback_context; pdpc->psoft_isr = psoft_isr; tasklet_init(&pdpc->divas_task, diva_os_dpc_proc, (unsigned long)pdpc); return (0); } int diva_os_schedule_soft_isr(diva_os_soft_isr_t *psoft_isr) { if (psoft_isr && psoft_isr->object) { diva_os_thread_dpc_t *pdpc = (diva_os_thread_dpc_t *) psoft_isr->object; tasklet_schedule(&pdpc->divas_task); } return (1); } int diva_os_cancel_soft_isr(diva_os_soft_isr_t *psoft_isr) { return (0); } void diva_os_remove_soft_isr(diva_os_soft_isr_t *psoft_isr) { if (psoft_isr && psoft_isr->object) { diva_os_thread_dpc_t *pdpc = (diva_os_thread_dpc_t *) psoft_isr->object; void *mem; tasklet_kill(&pdpc->divas_task); mem = psoft_isr->object; psoft_isr->object = NULL; diva_os_free(0, mem); } } /* * kernel/user space copy functions */ static int xdi_copy_to_user(void *os_handle, void __user *dst, const void *src, int length) { if (copy_to_user(dst, src, length)) { return (-EFAULT); } return (length); } static int xdi_copy_from_user(void *os_handle, void *dst, const void __user *src, int length) { if (copy_from_user(dst, src, length)) { return (-EFAULT); } return (length); } /* * device node operations */ static int divas_open(struct inode *inode, struct file *file) { return (0); } static int divas_release(struct inode *inode, struct file *file) { if (file->private_data) { diva_xdi_close_adapter(file->private_data, file); } return (0); } static ssize_t divas_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { int ret = -EINVAL; if (!file->private_data) { file->private_data = diva_xdi_open_adapter(file, buf, count, xdi_copy_from_user); } if (!file->private_data) { return (-ENODEV); } ret = diva_xdi_write(file->private_data, file, buf, count, xdi_copy_from_user); switch (ret) { case -1: /* Message should be removed from rx mailbox first */ ret = -EBUSY; break; case -2: /* invalid adapter was specified in this call */ ret = -ENOMEM; break; case -3: ret = -ENXIO; break; } DBG_TRC(("write: ret %d", ret)); return (ret); } static ssize_t divas_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { int ret = -EINVAL; if (!file->private_data) { file->private_data = diva_xdi_open_adapter(file, buf, count, xdi_copy_from_user); } if (!file->private_data) { return (-ENODEV); } ret = diva_xdi_read(file->private_data, file, buf, count, xdi_copy_to_user); switch (ret) { case -1: /* RX mailbox is empty */ ret = -EAGAIN; break; case -2: /* no memory, mailbox was cleared, last command is failed */ ret = -ENOMEM; break; case -3: /* can't copy to user, retry */ ret = -EFAULT; break; } DBG_TRC(("read: ret %d", ret)); return (ret); } static __poll_t divas_poll(struct file *file, poll_table *wait) { if (!file->private_data) { return (POLLERR); } return (POLLIN | POLLRDNORM); } static const struct file_operations divas_fops = { .owner = THIS_MODULE, .llseek = no_llseek, .read = divas_read, .write = divas_write, .poll = divas_poll, .open = divas_open, .release = divas_release }; static void divas_unregister_chrdev(void) { unregister_chrdev(major, DEVNAME); } static int __init divas_register_chrdev(void) { if ((major = register_chrdev(0, DEVNAME, &divas_fops)) < 0) { printk(KERN_ERR "%s: failed to create /dev entry.\n", DRIVERLNAME); return (0); } return (1); } /* -------------------------------------------------------------------------- PCI driver section -------------------------------------------------------------------------- */ static int divas_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) { void *pdiva = NULL; u8 pci_latency; u8 new_latency = 32; DBG_TRC(("%s bus: %08x fn: %08x insertion.\n", CardProperties[ent->driver_data].Name, pdev->bus->number, pdev->devfn)) printk(KERN_INFO "%s: %s bus: %08x fn: %08x insertion.\n", DRIVERLNAME, CardProperties[ent->driver_data].Name, pdev->bus->number, pdev->devfn); if (pci_enable_device(pdev)) { DBG_TRC(("%s: %s bus: %08x fn: %08x device init failed.\n", DRIVERLNAME, CardProperties[ent->driver_data].Name, pdev->bus->number, pdev->devfn)) printk(KERN_ERR "%s: %s bus: %08x fn: %08x device init failed.\n", DRIVERLNAME, CardProperties[ent->driver_data]. Name, pdev->bus->number, pdev->devfn); return (-EIO); } pci_set_master(pdev); pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency); if (!pci_latency) { DBG_TRC(("%s: bus: %08x fn: %08x fix latency.\n", DRIVERLNAME, pdev->bus->number, pdev->devfn)) printk(KERN_INFO "%s: bus: %08x fn: %08x fix latency.\n", DRIVERLNAME, pdev->bus->number, pdev->devfn); pci_write_config_byte(pdev, PCI_LATENCY_TIMER, new_latency); } if (!(pdiva = diva_driver_add_card(pdev, ent->driver_data))) { DBG_TRC(("%s: %s bus: %08x fn: %08x card init failed.\n", DRIVERLNAME, CardProperties[ent->driver_data].Name, pdev->bus->number, pdev->devfn)) printk(KERN_ERR "%s: %s bus: %08x fn: %08x card init failed.\n", DRIVERLNAME, CardProperties[ent->driver_data]. Name, pdev->bus->number, pdev->devfn); return (-EIO); } pci_set_drvdata(pdev, pdiva); return (0); } static void divas_remove_one(struct pci_dev *pdev) { void *pdiva = pci_get_drvdata(pdev); DBG_TRC(("bus: %08x fn: %08x removal.\n", pdev->bus->number, pdev->devfn)) printk(KERN_INFO "%s: bus: %08x fn: %08x removal.\n", DRIVERLNAME, pdev->bus->number, pdev->devfn); if (pdiva) { diva_driver_remove_card(pdiva); } } /* -------------------------------------------------------------------------- Driver Load / Startup -------------------------------------------------------------------------- */ static int __init divas_init(void) { char tmprev[50]; int ret = 0; printk(KERN_INFO "%s\n", DRIVERNAME); printk(KERN_INFO "%s: Rel:%s Rev:", DRIVERLNAME, DRIVERRELEASE_DIVAS); strcpy(tmprev, main_revision); printk("%s Build: %s(%s)\n", getrev(tmprev), diva_xdi_common_code_build, DIVA_BUILD); printk(KERN_INFO "%s: support for: ", DRIVERLNAME); #ifdef CONFIG_ISDN_DIVAS_BRIPCI printk("BRI/PCI "); #endif #ifdef CONFIG_ISDN_DIVAS_PRIPCI printk("PRI/PCI "); #endif printk("adapters\n"); if (!divasfunc_init(dbgmask)) { printk(KERN_ERR "%s: failed to connect to DIDD.\n", DRIVERLNAME); ret = -EIO; goto out; } if (!divas_register_chrdev()) { #ifdef MODULE divasfunc_exit(); #endif ret = -EIO; goto out; } if (!create_divas_proc()) { #ifdef MODULE divas_unregister_chrdev(); divasfunc_exit(); #endif printk(KERN_ERR "%s: failed to create proc entry.\n", DRIVERLNAME); ret = -EIO; goto out; } if ((ret = pci_register_driver(&diva_pci_driver))) { #ifdef MODULE remove_divas_proc(); divas_unregister_chrdev(); divasfunc_exit(); #endif printk(KERN_ERR "%s: failed to init pci driver.\n", DRIVERLNAME); goto out; } printk(KERN_INFO "%s: started with major %d\n", DRIVERLNAME, major); out: return (ret); } /* -------------------------------------------------------------------------- Driver Unload -------------------------------------------------------------------------- */ static void __exit divas_exit(void) { pci_unregister_driver(&diva_pci_driver); remove_divas_proc(); divas_unregister_chrdev(); divasfunc_exit(); printk(KERN_INFO "%s: module unloaded.\n", DRIVERLNAME); } module_init(divas_init); module_exit(divas_exit);