diva.c

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/* $Id: diva.c,v 1.21.4.1 2004/05/08 14:33:43 armin Exp $ */

#define CARDTYPE_H_WANT_DATA            1
#define CARDTYPE_H_WANT_IDI_DATA        0
#define CARDTYPE_H_WANT_RESOURCE_DATA   0
#define CARDTYPE_H_WANT_FILE_DATA       0

#include "platform.h"
#include "debuglib.h"
#include "cardtype.h"
#include "pc.h"
#include "di_defs.h"
#include "di.h"
#include "io.h"
#include "pc_maint.h"
#include "xdi_msg.h"
#include "xdi_adapter.h"
#include "diva_pci.h"
#include "diva.h"

#ifdef CONFIG_ISDN_DIVAS_PRIPCI
#include "os_pri.h"
#endif
#ifdef CONFIG_ISDN_DIVAS_BRIPCI
#include "os_bri.h"
#include "os_4bri.h"
#endif

PISDN_ADAPTER IoAdapters[MAX_ADAPTER];
extern IDI_CALL Requests[MAX_ADAPTER];
extern int create_adapter_proc(diva_os_xdi_adapter_t *a);
extern void remove_adapter_proc(diva_os_xdi_adapter_t *a);

#define DivaIdiReqFunc(N)                       \
    static void DivaIdiRequest##N(ENTITY *e)            \
    { if (IoAdapters[N]) (*IoAdapters[N]->DIRequest)(IoAdapters[N], e); }

/*
**  Create own 32 Adapters
*/
DivaIdiReqFunc(0)
DivaIdiReqFunc(1)
DivaIdiReqFunc(2)
DivaIdiReqFunc(3)
DivaIdiReqFunc(4)
DivaIdiReqFunc(5)
DivaIdiReqFunc(6)
DivaIdiReqFunc(7)
DivaIdiReqFunc(8)
DivaIdiReqFunc(9)
DivaIdiReqFunc(10)
DivaIdiReqFunc(11)
DivaIdiReqFunc(12)
DivaIdiReqFunc(13)
DivaIdiReqFunc(14)
DivaIdiReqFunc(15)
DivaIdiReqFunc(16)
DivaIdiReqFunc(17)
DivaIdiReqFunc(18)
DivaIdiReqFunc(19)
DivaIdiReqFunc(20)
DivaIdiReqFunc(21)
DivaIdiReqFunc(22)
DivaIdiReqFunc(23)
DivaIdiReqFunc(24)
DivaIdiReqFunc(25)
DivaIdiReqFunc(26)
DivaIdiReqFunc(27)
DivaIdiReqFunc(28)
DivaIdiReqFunc(29)
DivaIdiReqFunc(30)
DivaIdiReqFunc(31)

/*
**  LOCALS
*/
static LIST_HEAD(adapter_queue);

typedef struct _diva_get_xlog {
    word command;
    byte req;
    byte rc;
    byte data[sizeof(struct mi_pc_maint)];
} diva_get_xlog_t;

typedef struct _diva_supported_cards_info {
    int CardOrdinal;
    diva_init_card_proc_t init_card;
} diva_supported_cards_info_t;

static diva_supported_cards_info_t divas_supported_cards[] = {
#ifdef CONFIG_ISDN_DIVAS_PRIPCI
    /*
      PRI Cards
    */
    {CARDTYPE_DIVASRV_P_30M_PCI, diva_pri_init_card},
    /*
      PRI Rev.2 Cards
    */
    {CARDTYPE_DIVASRV_P_30M_V2_PCI, diva_pri_init_card},
    /*
      PRI Rev.2 VoIP Cards
    */
    {CARDTYPE_DIVASRV_VOICE_P_30M_V2_PCI, diva_pri_init_card},
#endif
#ifdef CONFIG_ISDN_DIVAS_BRIPCI
    /*
      4BRI Rev 1 Cards
    */
    {CARDTYPE_DIVASRV_Q_8M_PCI, diva_4bri_init_card},
    {CARDTYPE_DIVASRV_VOICE_Q_8M_PCI, diva_4bri_init_card},
    /*
      4BRI Rev 2 Cards
    */
    {CARDTYPE_DIVASRV_Q_8M_V2_PCI, diva_4bri_init_card},
    {CARDTYPE_DIVASRV_VOICE_Q_8M_V2_PCI, diva_4bri_init_card},
    /*
      4BRI Based BRI Rev 2 Cards
    */
    {CARDTYPE_DIVASRV_B_2M_V2_PCI, diva_4bri_init_card},
    {CARDTYPE_DIVASRV_B_2F_PCI, diva_4bri_init_card},
    {CARDTYPE_DIVASRV_VOICE_B_2M_V2_PCI, diva_4bri_init_card},
    /*
      BRI
    */
    {CARDTYPE_MAESTRA_PCI, diva_bri_init_card},
#endif

    /*
      EOL
    */
    {-1}
};

static void diva_init_request_array(void);
static void *divas_create_pci_card(int handle, void *pci_dev_handle);

static diva_os_spin_lock_t adapter_lock;

static int diva_find_free_adapters(int base, int nr)
{
    int i;

    for (i = 0; i < nr; i++) {
        if (IoAdapters[base + i]) {
            return (-1);
        }
    }

    return (0);
}

static diva_os_xdi_adapter_t *diva_q_get_next(struct list_head *what)
{
    diva_os_xdi_adapter_t *a = NULL;

    if (what && (what->next != &adapter_queue))
        a = list_entry(what->next, diva_os_xdi_adapter_t, link);

    return (a);
}

/* --------------------------------------------------------------------------
   Add card to the card list
   -------------------------------------------------------------------------- */
void *diva_driver_add_card(void *pdev, unsigned long CardOrdinal)
{
    diva_os_spin_lock_magic_t old_irql;
    diva_os_xdi_adapter_t *pdiva, *pa;
    int i, j, max, nr;

    for (i = 0; divas_supported_cards[i].CardOrdinal != -1; i++) {
        if (divas_supported_cards[i].CardOrdinal == CardOrdinal) {
            if (!(pdiva = divas_create_pci_card(i, pdev))) {
                return NULL;
            }
            switch (CardOrdinal) {
            case CARDTYPE_DIVASRV_Q_8M_PCI:
            case CARDTYPE_DIVASRV_VOICE_Q_8M_PCI:
            case CARDTYPE_DIVASRV_Q_8M_V2_PCI:
            case CARDTYPE_DIVASRV_VOICE_Q_8M_V2_PCI:
                max = MAX_ADAPTER - 4;
                nr = 4;
                break;

            default:
                max = MAX_ADAPTER;
                nr = 1;
            }

            diva_os_enter_spin_lock(&adapter_lock, &old_irql, "add card");

            for (i = 0; i < max; i++) {
                if (!diva_find_free_adapters(i, nr)) {
                    pdiva->controller = i + 1;
                    pdiva->xdi_adapter.ANum = pdiva->controller;
                    IoAdapters[i] = &pdiva->xdi_adapter;
                    diva_os_leave_spin_lock(&adapter_lock, &old_irql, "add card");
                    create_adapter_proc(pdiva); /* add adapter to proc file system */

                    DBG_LOG(("add %s:%d",
                         CardProperties
                         [CardOrdinal].Name,
                         pdiva->controller))

                        diva_os_enter_spin_lock(&adapter_lock, &old_irql, "add card");
                    pa = pdiva;
                    for (j = 1; j < nr; j++) {  /* slave adapters, if any */
                        pa = diva_q_get_next(&pa->link);
                        if (pa && !pa->interface.cleanup_adapter_proc) {
                            pa->controller = i + 1 + j;
                            pa->xdi_adapter.ANum = pa->controller;
                            IoAdapters[i + j] = &pa->xdi_adapter;
                            diva_os_leave_spin_lock(&adapter_lock, &old_irql, "add card");
                            DBG_LOG(("add slave adapter (%d)",
                                 pa->controller))
                                create_adapter_proc(pa);    /* add adapter to proc file system */
                            diva_os_enter_spin_lock(&adapter_lock, &old_irql, "add card");
                        } else {
                            DBG_ERR(("slave adapter problem"))
                                break;
                        }
                    }

                    diva_os_leave_spin_lock(&adapter_lock, &old_irql, "add card");
                    return (pdiva);
                }
            }

            diva_os_leave_spin_lock(&adapter_lock, &old_irql, "add card");

            /*
              Not able to add adapter - remove it and return error
            */
            DBG_ERR(("can not alloc request array"))
                diva_driver_remove_card(pdiva);

            return NULL;
        }
    }

    return NULL;
}

/* --------------------------------------------------------------------------
   Called on driver load, MAIN, main, DriverEntry
   -------------------------------------------------------------------------- */
int divasa_xdi_driver_entry(void)
{
    diva_os_initialize_spin_lock(&adapter_lock, "adapter");
    memset(&IoAdapters[0], 0x00, sizeof(IoAdapters));
    diva_init_request_array();

    return (0);
}

/* --------------------------------------------------------------------------
   Remove adapter from list
   -------------------------------------------------------------------------- */
static diva_os_xdi_adapter_t *get_and_remove_from_queue(void)
{
    diva_os_spin_lock_magic_t old_irql;
    diva_os_xdi_adapter_t *a = NULL;

    diva_os_enter_spin_lock(&adapter_lock, &old_irql, "driver_unload");

    if (!list_empty(&adapter_queue)) {
        a = list_entry(adapter_queue.next, diva_os_xdi_adapter_t, link);
        list_del(adapter_queue.next);
    }

    diva_os_leave_spin_lock(&adapter_lock, &old_irql, "driver_unload");
    return (a);
}

/* --------------------------------------------------------------------------
   Remove card from the card list
   -------------------------------------------------------------------------- */
void diva_driver_remove_card(void *pdiva)
{
    diva_os_spin_lock_magic_t old_irql;
    diva_os_xdi_adapter_t *a[4];
    diva_os_xdi_adapter_t *pa;
    int i;

    pa = a[0] = (diva_os_xdi_adapter_t *) pdiva;
    a[1] = a[2] = a[3] = NULL;

    diva_os_enter_spin_lock(&adapter_lock, &old_irql, "remode adapter");

    for (i = 1; i < 4; i++) {
        if ((pa = diva_q_get_next(&pa->link))
            && !pa->interface.cleanup_adapter_proc) {
            a[i] = pa;
        } else {
            break;
        }
    }

    for (i = 0; ((i < 4) && a[i]); i++) {
        list_del(&a[i]->link);
    }

    diva_os_leave_spin_lock(&adapter_lock, &old_irql, "driver_unload");

    (*(a[0]->interface.cleanup_adapter_proc)) (a[0]);

    for (i = 0; i < 4; i++) {
        if (a[i]) {
            if (a[i]->controller) {
                DBG_LOG(("remove adapter (%d)",
                     a[i]->controller)) IoAdapters[a[i]->controller - 1] = NULL;
                remove_adapter_proc(a[i]);
            }
            diva_os_free(0, a[i]);
        }
    }
}

/* --------------------------------------------------------------------------
   Create diva PCI adapter and init internal adapter structures
   -------------------------------------------------------------------------- */
static void *divas_create_pci_card(int handle, void *pci_dev_handle)
{
    diva_supported_cards_info_t *pI = &divas_supported_cards[handle];
    diva_os_spin_lock_magic_t old_irql;
    diva_os_xdi_adapter_t *a;

    DBG_LOG(("found %d-%s", pI->CardOrdinal, CardProperties[pI->CardOrdinal].Name))

        if (!(a = (diva_os_xdi_adapter_t *) diva_os_malloc(0, sizeof(*a)))) {
            DBG_ERR(("A: can't alloc adapter"));
            return NULL;
        }

    memset(a, 0x00, sizeof(*a));

    a->CardIndex = handle;
    a->CardOrdinal = pI->CardOrdinal;
    a->Bus = DIVAS_XDI_ADAPTER_BUS_PCI;
    a->xdi_adapter.cardType = a->CardOrdinal;
    a->resources.pci.bus = diva_os_get_pci_bus(pci_dev_handle);
    a->resources.pci.func = diva_os_get_pci_func(pci_dev_handle);
    a->resources.pci.hdev = pci_dev_handle;

    /*
      Add master adapter first, so slave adapters will receive higher
      numbers as master adapter
    */
    diva_os_enter_spin_lock(&adapter_lock, &old_irql, "found_pci_card");
    list_add_tail(&a->link, &adapter_queue);
    diva_os_leave_spin_lock(&adapter_lock, &old_irql, "found_pci_card");

    if ((*(pI->init_card)) (a)) {
        diva_os_enter_spin_lock(&adapter_lock, &old_irql, "found_pci_card");
        list_del(&a->link);
        diva_os_leave_spin_lock(&adapter_lock, &old_irql, "found_pci_card");
        diva_os_free(0, a);
        DBG_ERR(("A: can't get adapter resources"));
        return NULL;
    }

    return (a);
}

/* --------------------------------------------------------------------------
   Called on driver unload FINIT, finit, Unload
   -------------------------------------------------------------------------- */
void divasa_xdi_driver_unload(void)
{
    diva_os_xdi_adapter_t *a;

    while ((a = get_and_remove_from_queue())) {
        if (a->interface.cleanup_adapter_proc) {
            (*(a->interface.cleanup_adapter_proc)) (a);
        }
        if (a->controller) {
            IoAdapters[a->controller - 1] = NULL;
            remove_adapter_proc(a);
        }
        diva_os_free(0, a);
    }
    diva_os_destroy_spin_lock(&adapter_lock, "adapter");
}

/*
**  Receive and process command from user mode utility
*/
void *diva_xdi_open_adapter(void *os_handle, const void __user *src,
                int length,
                divas_xdi_copy_from_user_fn_t cp_fn)
{
    diva_xdi_um_cfg_cmd_t msg;
    diva_os_xdi_adapter_t *a = NULL;
    diva_os_spin_lock_magic_t old_irql;
    struct list_head *tmp;

    if (length < sizeof(diva_xdi_um_cfg_cmd_t)) {
        DBG_ERR(("A: A(?) open, msg too small (%d < %d)",
             length, sizeof(diva_xdi_um_cfg_cmd_t)))
            return NULL;
    }
    if ((*cp_fn) (os_handle, &msg, src, sizeof(msg)) <= 0) {
        DBG_ERR(("A: A(?) open, write error"))
            return NULL;
    }
    diva_os_enter_spin_lock(&adapter_lock, &old_irql, "open_adapter");
    list_for_each(tmp, &adapter_queue) {
        a = list_entry(tmp, diva_os_xdi_adapter_t, link);
        if (a->controller == (int)msg.adapter)
            break;
        a = NULL;
    }
    diva_os_leave_spin_lock(&adapter_lock, &old_irql, "open_adapter");

    if (!a) {
        DBG_ERR(("A: A(%d) open, adapter not found", msg.adapter))
            }

    return (a);
}

/*
**  Easy cleanup mailbox status
*/
void diva_xdi_close_adapter(void *adapter, void *os_handle)
{
    diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) adapter;

    a->xdi_mbox.status &= ~DIVA_XDI_MBOX_BUSY;
    if (a->xdi_mbox.data) {
        diva_os_free(0, a->xdi_mbox.data);
        a->xdi_mbox.data = NULL;
    }
}

int
diva_xdi_write(void *adapter, void *os_handle, const void __user *src,
           int length, divas_xdi_copy_from_user_fn_t cp_fn)
{
    diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) adapter;
    void *data;

    if (a->xdi_mbox.status & DIVA_XDI_MBOX_BUSY) {
        DBG_ERR(("A: A(%d) write, mbox busy", a->controller))
            return (-1);
    }

    if (length < sizeof(diva_xdi_um_cfg_cmd_t)) {
        DBG_ERR(("A: A(%d) write, message too small (%d < %d)",
             a->controller, length,
             sizeof(diva_xdi_um_cfg_cmd_t)))
            return (-3);
    }

    if (!(data = diva_os_malloc(0, length))) {
        DBG_ERR(("A: A(%d) write, ENOMEM", a->controller))
            return (-2);
    }

    length = (*cp_fn) (os_handle, data, src, length);
    if (length > 0) {
        if ((*(a->interface.cmd_proc))
            (a, (diva_xdi_um_cfg_cmd_t *) data, length)) {
            length = -3;
        }
    } else {
        DBG_ERR(("A: A(%d) write error (%d)", a->controller,
             length))
            }

    diva_os_free(0, data);

    return (length);
}

/*
**  Write answers to user mode utility, if any
*/
int
diva_xdi_read(void *adapter, void *os_handle, void __user *dst,
          int max_length, divas_xdi_copy_to_user_fn_t cp_fn)
{
    diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) adapter;
    int ret;

    if (!(a->xdi_mbox.status & DIVA_XDI_MBOX_BUSY)) {
        DBG_ERR(("A: A(%d) rx mbox empty", a->controller))
            return (-1);
    }
    if (!a->xdi_mbox.data) {
        a->xdi_mbox.status &= ~DIVA_XDI_MBOX_BUSY;
        DBG_ERR(("A: A(%d) rx ENOMEM", a->controller))
            return (-2);
    }

    if (max_length < a->xdi_mbox.data_length) {
        DBG_ERR(("A: A(%d) rx buffer too short(%d < %d)",
             a->controller, max_length,
             a->xdi_mbox.data_length))
            return (-3);
    }

    ret = (*cp_fn) (os_handle, dst, a->xdi_mbox.data,
            a->xdi_mbox.data_length);
    if (ret > 0) {
        diva_os_free(0, a->xdi_mbox.data);
        a->xdi_mbox.data = NULL;
        a->xdi_mbox.status &= ~DIVA_XDI_MBOX_BUSY;
    }

    return (ret);
}


irqreturn_t diva_os_irq_wrapper(int irq, void *context)
{
    diva_os_xdi_adapter_t *a = context;
    diva_xdi_clear_interrupts_proc_t clear_int_proc;

    if (!a || !a->xdi_adapter.diva_isr_handler)
        return IRQ_NONE;

    if ((clear_int_proc = a->clear_interrupts_proc)) {
        (*clear_int_proc) (a);
        a->clear_interrupts_proc = NULL;
        return IRQ_HANDLED;
    }

    (*(a->xdi_adapter.diva_isr_handler)) (&a->xdi_adapter);
    return IRQ_HANDLED;
}

static void diva_init_request_array(void)
{
    Requests[0] = DivaIdiRequest0;
    Requests[1] = DivaIdiRequest1;
    Requests[2] = DivaIdiRequest2;
    Requests[3] = DivaIdiRequest3;
    Requests[4] = DivaIdiRequest4;
    Requests[5] = DivaIdiRequest5;
    Requests[6] = DivaIdiRequest6;
    Requests[7] = DivaIdiRequest7;
    Requests[8] = DivaIdiRequest8;
    Requests[9] = DivaIdiRequest9;
    Requests[10] = DivaIdiRequest10;
    Requests[11] = DivaIdiRequest11;
    Requests[12] = DivaIdiRequest12;
    Requests[13] = DivaIdiRequest13;
    Requests[14] = DivaIdiRequest14;
    Requests[15] = DivaIdiRequest15;
    Requests[16] = DivaIdiRequest16;
    Requests[17] = DivaIdiRequest17;
    Requests[18] = DivaIdiRequest18;
    Requests[19] = DivaIdiRequest19;
    Requests[20] = DivaIdiRequest20;
    Requests[21] = DivaIdiRequest21;
    Requests[22] = DivaIdiRequest22;
    Requests[23] = DivaIdiRequest23;
    Requests[24] = DivaIdiRequest24;
    Requests[25] = DivaIdiRequest25;
    Requests[26] = DivaIdiRequest26;
    Requests[27] = DivaIdiRequest27;
    Requests[28] = DivaIdiRequest28;
    Requests[29] = DivaIdiRequest29;
    Requests[30] = DivaIdiRequest30;
    Requests[31] = DivaIdiRequest31;
}

void diva_xdi_display_adapter_features(int card)
{
    dword features;
    if (!card || ((card - 1) >= MAX_ADAPTER) || !IoAdapters[card - 1]) {
        return;
    }
    card--;
    features = IoAdapters[card]->Properties.Features;

    DBG_LOG(("FEATURES FOR ADAPTER: %d", card + 1))
        DBG_LOG((" DI_FAX3          :  %s",
             (features & DI_FAX3) ? "Y" : "N"))
        DBG_LOG((" DI_MODEM         :  %s",
             (features & DI_MODEM) ? "Y" : "N"))
        DBG_LOG((" DI_POST          :  %s",
             (features & DI_POST) ? "Y" : "N"))
        DBG_LOG((" DI_V110          :  %s",
             (features & DI_V110) ? "Y" : "N"))
        DBG_LOG((" DI_V120          :  %s",
             (features & DI_V120) ? "Y" : "N"))
        DBG_LOG((" DI_POTS          :  %s",
             (features & DI_POTS) ? "Y" : "N"))
        DBG_LOG((" DI_CODEC         :  %s",
             (features & DI_CODEC) ? "Y" : "N"))
        DBG_LOG((" DI_MANAGE        :  %s",
             (features & DI_MANAGE) ? "Y" : "N"))
        DBG_LOG((" DI_V_42          :  %s",
             (features & DI_V_42) ? "Y" : "N"))
        DBG_LOG((" DI_EXTD_FAX      :  %s",
             (features & DI_EXTD_FAX) ? "Y" : "N"))
        DBG_LOG((" DI_AT_PARSER     :  %s",
             (features & DI_AT_PARSER) ? "Y" : "N"))
        DBG_LOG((" DI_VOICE_OVER_IP :  %s",
             (features & DI_VOICE_OVER_IP) ? "Y" : "N"))
        }

void diva_add_slave_adapter(diva_os_xdi_adapter_t *a)
{
    diva_os_spin_lock_magic_t old_irql;

    diva_os_enter_spin_lock(&adapter_lock, &old_irql, "add_slave");
    list_add_tail(&a->link, &adapter_queue);
    diva_os_leave_spin_lock(&adapter_lock, &old_irql, "add_slave");
}

int diva_card_read_xlog(diva_os_xdi_adapter_t *a)
{
    diva_get_xlog_t *req;
    byte *data;

    if (!a->xdi_adapter.Initialized || !a->xdi_adapter.DIRequest) {
        return (-1);
    }
    if (!(data = diva_os_malloc(0, sizeof(struct mi_pc_maint)))) {
        return (-1);
    }
    memset(data, 0x00, sizeof(struct mi_pc_maint));

    if (!(req = diva_os_malloc(0, sizeof(*req)))) {
        diva_os_free(0, data);
        return (-1);
    }
    req->command = 0x0400;
    req->req = LOG;
    req->rc = 0x00;

    (*(a->xdi_adapter.DIRequest)) (&a->xdi_adapter, (ENTITY *) req);

    if (!req->rc || req->req) {
        diva_os_free(0, data);
        diva_os_free(0, req);
        return (-1);
    }

    memcpy(data, &req->req, sizeof(struct mi_pc_maint));

    diva_os_free(0, req);

    a->xdi_mbox.data_length = sizeof(struct mi_pc_maint);
    a->xdi_mbox.data = data;
    a->xdi_mbox.status = DIVA_XDI_MBOX_BUSY;

    return (0);
}

void xdiFreeFile(void *handle)
{
}