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linux-next/drivers/net/skfp/skfddi.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

2292 lines
65 KiB
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/*
* File Name:
* skfddi.c
*
* Copyright Information:
* Copyright SysKonnect 1998,1999.
*
* 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.
*
* The information in this file is provided "AS IS" without warranty.
*
* Abstract:
* A Linux device driver supporting the SysKonnect FDDI PCI controller
* familie.
*
* Maintainers:
* CG Christoph Goos (cgoos@syskonnect.de)
*
* Contributors:
* DM David S. Miller
*
* Address all question to:
* linux@syskonnect.de
*
* The technical manual for the adapters is available from SysKonnect's
* web pages: www.syskonnect.com
* Goto "Support" and search Knowledge Base for "manual".
*
* Driver Architecture:
* The driver architecture is based on the DEC FDDI driver by
* Lawrence V. Stefani and several ethernet drivers.
* I also used an existing Windows NT miniport driver.
* All hardware dependent fuctions are handled by the SysKonnect
* Hardware Module.
* The only headerfiles that are directly related to this source
* are skfddi.c, h/types.h, h/osdef1st.h, h/targetos.h.
* The others belong to the SysKonnect FDDI Hardware Module and
* should better not be changed.
*
* Modification History:
* Date Name Description
* 02-Mar-98 CG Created.
*
* 10-Mar-99 CG Support for 2.2.x added.
* 25-Mar-99 CG Corrected IRQ routing for SMP (APIC)
* 26-Oct-99 CG Fixed compilation error on 2.2.13
* 12-Nov-99 CG Source code release
* 22-Nov-99 CG Included in kernel source.
* 07-May-00 DM 64 bit fixes, new dma interface
* 31-Jul-03 DB Audit copy_*_user in skfp_ioctl
* Daniele Bellucci <bellucda@tiscali.it>
* 03-Dec-03 SH Convert to PCI device model
*
* Compilation options (-Dxxx):
* DRIVERDEBUG print lots of messages to log file
* DUMPPACKETS print received/transmitted packets to logfile
*
* Tested cpu architectures:
* - i386
* - sparc64
*/
/* Version information string - should be updated prior to */
/* each new release!!! */
#define VERSION "2.07"
static const char * const boot_msg =
"SysKonnect FDDI PCI Adapter driver v" VERSION " for\n"
" SK-55xx/SK-58xx adapters (SK-NET FDDI-FP/UP/LP)";
/* Include files */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/fddidevice.h>
#include <linux/skbuff.h>
#include <linux/bitops.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include "h/types.h"
#undef ADDR // undo Linux definition
#include "h/skfbi.h"
#include "h/fddi.h"
#include "h/smc.h"
#include "h/smtstate.h"
// Define module-wide (static) routines
static int skfp_driver_init(struct net_device *dev);
static int skfp_open(struct net_device *dev);
static int skfp_close(struct net_device *dev);
static irqreturn_t skfp_interrupt(int irq, void *dev_id);
static struct net_device_stats *skfp_ctl_get_stats(struct net_device *dev);
static void skfp_ctl_set_multicast_list(struct net_device *dev);
static void skfp_ctl_set_multicast_list_wo_lock(struct net_device *dev);
static int skfp_ctl_set_mac_address(struct net_device *dev, void *addr);
static int skfp_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static int skfp_send_pkt(struct sk_buff *skb, struct net_device *dev);
static void send_queued_packets(struct s_smc *smc);
static void CheckSourceAddress(unsigned char *frame, unsigned char *hw_addr);
static void ResetAdapter(struct s_smc *smc);
// Functions needed by the hardware module
void *mac_drv_get_space(struct s_smc *smc, u_int size);
void *mac_drv_get_desc_mem(struct s_smc *smc, u_int size);
unsigned long mac_drv_virt2phys(struct s_smc *smc, void *virt);
unsigned long dma_master(struct s_smc *smc, void *virt, int len, int flag);
void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr,
int flag);
void mac_drv_tx_complete(struct s_smc *smc, volatile struct s_smt_fp_txd *txd);
void llc_restart_tx(struct s_smc *smc);
void mac_drv_rx_complete(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd,
int frag_count, int len);
void mac_drv_requeue_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd,
int frag_count);
void mac_drv_fill_rxd(struct s_smc *smc);
void mac_drv_clear_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd,
int frag_count);
int mac_drv_rx_init(struct s_smc *smc, int len, int fc, char *look_ahead,
int la_len);
void dump_data(unsigned char *Data, int length);
// External functions from the hardware module
extern u_int mac_drv_check_space(void);
extern void read_address(struct s_smc *smc, u_char * mac_addr);
extern void card_stop(struct s_smc *smc);
extern int mac_drv_init(struct s_smc *smc);
extern void hwm_tx_frag(struct s_smc *smc, char far * virt, u_long phys,
int len, int frame_status);
extern int hwm_tx_init(struct s_smc *smc, u_char fc, int frag_count,
int frame_len, int frame_status);
extern int init_smt(struct s_smc *smc, u_char * mac_addr);
extern void fddi_isr(struct s_smc *smc);
extern void hwm_rx_frag(struct s_smc *smc, char far * virt, u_long phys,
int len, int frame_status);
extern void mac_drv_rx_mode(struct s_smc *smc, int mode);
extern void mac_drv_clear_rx_queue(struct s_smc *smc);
extern void enable_tx_irq(struct s_smc *smc, u_short queue);
static struct pci_device_id skfddi_pci_tbl[] = {
{ PCI_VENDOR_ID_SK, PCI_DEVICE_ID_SK_FP, PCI_ANY_ID, PCI_ANY_ID, },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, skfddi_pci_tbl);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mirko Lindner <mlindner@syskonnect.de>");
// Define module-wide (static) variables
static int num_boards; /* total number of adapters configured */
#ifdef DRIVERDEBUG
#define PRINTK(s, args...) printk(s, ## args)
#else
#define PRINTK(s, args...)
#endif // DRIVERDEBUG
/*
* =================
* = skfp_init_one =
* =================
*
* Overview:
* Probes for supported FDDI PCI controllers
*
* Returns:
* Condition code
*
* Arguments:
* pdev - pointer to PCI device information
*
* Functional Description:
* This is now called by PCI driver registration process
* for each board found.
*
* Return Codes:
* 0 - This device (fddi0, fddi1, etc) configured successfully
* -ENODEV - No devices present, or no SysKonnect FDDI PCI device
* present for this device name
*
*
* Side Effects:
* Device structures for FDDI adapters (fddi0, fddi1, etc) are
* initialized and the board resources are read and stored in
* the device structure.
*/
static int skfp_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct net_device *dev;
struct s_smc *smc; /* board pointer */
void __iomem *mem;
int err;
PRINTK(KERN_INFO "entering skfp_init_one\n");
if (num_boards == 0)
printk("%s\n", boot_msg);
err = pci_enable_device(pdev);
if (err)
return err;
err = pci_request_regions(pdev, "skfddi");
if (err)
goto err_out1;
pci_set_master(pdev);
#ifdef MEM_MAPPED_IO
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
printk(KERN_ERR "skfp: region is not an MMIO resource\n");
err = -EIO;
goto err_out2;
}
mem = ioremap(pci_resource_start(pdev, 0), 0x4000);
#else
if (!(pci_resource_flags(pdev, 1) & IO_RESOURCE_IO)) {
printk(KERN_ERR "skfp: region is not PIO resource\n");
err = -EIO;
goto err_out2;
}
mem = ioport_map(pci_resource_start(pdev, 1), FP_IO_LEN);
#endif
if (!mem) {
printk(KERN_ERR "skfp: Unable to map register, "
"FDDI adapter will be disabled.\n");
err = -EIO;
goto err_out2;
}
dev = alloc_fddidev(sizeof(struct s_smc));
if (!dev) {
printk(KERN_ERR "skfp: Unable to allocate fddi device, "
"FDDI adapter will be disabled.\n");
err = -ENOMEM;
goto err_out3;
}
dev->irq = pdev->irq;
dev->get_stats = &skfp_ctl_get_stats;
dev->open = &skfp_open;
dev->stop = &skfp_close;
dev->hard_start_xmit = &skfp_send_pkt;
dev->set_multicast_list = &skfp_ctl_set_multicast_list;
dev->set_mac_address = &skfp_ctl_set_mac_address;
dev->do_ioctl = &skfp_ioctl;
dev->header_cache_update = NULL; /* not supported */
SET_MODULE_OWNER(dev);
SET_NETDEV_DEV(dev, &pdev->dev);
/* Initialize board structure with bus-specific info */
smc = netdev_priv(dev);
smc->os.dev = dev;
smc->os.bus_type = SK_BUS_TYPE_PCI;
smc->os.pdev = *pdev;
smc->os.QueueSkb = MAX_TX_QUEUE_LEN;
smc->os.MaxFrameSize = MAX_FRAME_SIZE;
smc->os.dev = dev;
smc->hw.slot = -1;
smc->hw.iop = mem;
smc->os.ResetRequested = FALSE;
skb_queue_head_init(&smc->os.SendSkbQueue);
dev->base_addr = (unsigned long)mem;
err = skfp_driver_init(dev);
if (err)
goto err_out4;
err = register_netdev(dev);
if (err)
goto err_out5;
++num_boards;
pci_set_drvdata(pdev, dev);
if ((pdev->subsystem_device & 0xff00) == 0x5500 ||
(pdev->subsystem_device & 0xff00) == 0x5800)
printk("%s: SysKonnect FDDI PCI adapter"
" found (SK-%04X)\n", dev->name,
pdev->subsystem_device);
else
printk("%s: FDDI PCI adapter found\n", dev->name);
return 0;
err_out5:
if (smc->os.SharedMemAddr)
pci_free_consistent(pdev, smc->os.SharedMemSize,
smc->os.SharedMemAddr,
smc->os.SharedMemDMA);
pci_free_consistent(pdev, MAX_FRAME_SIZE,
smc->os.LocalRxBuffer, smc->os.LocalRxBufferDMA);
err_out4:
free_netdev(dev);
err_out3:
#ifdef MEM_MAPPED_IO
iounmap(mem);
#else
ioport_unmap(mem);
#endif
err_out2:
pci_release_regions(pdev);
err_out1:
pci_disable_device(pdev);
return err;
}
/*
* Called for each adapter board from pci_unregister_driver
*/
static void __devexit skfp_remove_one(struct pci_dev *pdev)
{
struct net_device *p = pci_get_drvdata(pdev);
struct s_smc *lp = netdev_priv(p);
unregister_netdev(p);
if (lp->os.SharedMemAddr) {
pci_free_consistent(&lp->os.pdev,
lp->os.SharedMemSize,
lp->os.SharedMemAddr,
lp->os.SharedMemDMA);
lp->os.SharedMemAddr = NULL;
}
if (lp->os.LocalRxBuffer) {
pci_free_consistent(&lp->os.pdev,
MAX_FRAME_SIZE,
lp->os.LocalRxBuffer,
lp->os.LocalRxBufferDMA);
lp->os.LocalRxBuffer = NULL;
}
#ifdef MEM_MAPPED_IO
iounmap(lp->hw.iop);
#else
ioport_unmap(lp->hw.iop);
#endif
pci_release_regions(pdev);
free_netdev(p);
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
}
/*
* ====================
* = skfp_driver_init =
* ====================
*
* Overview:
* Initializes remaining adapter board structure information
* and makes sure adapter is in a safe state prior to skfp_open().
*
* Returns:
* Condition code
*
* Arguments:
* dev - pointer to device information
*
* Functional Description:
* This function allocates additional resources such as the host memory
* blocks needed by the adapter.
* The adapter is also reset. The OS must call skfp_open() to open
* the adapter and bring it on-line.
*
* Return Codes:
* 0 - initialization succeeded
* -1 - initialization failed
*/
static int skfp_driver_init(struct net_device *dev)
{
struct s_smc *smc = netdev_priv(dev);
skfddi_priv *bp = &smc->os;
int err = -EIO;
PRINTK(KERN_INFO "entering skfp_driver_init\n");
// set the io address in private structures
bp->base_addr = dev->base_addr;
// Get the interrupt level from the PCI Configuration Table
smc->hw.irq = dev->irq;
spin_lock_init(&bp->DriverLock);
// Allocate invalid frame
bp->LocalRxBuffer = pci_alloc_consistent(&bp->pdev, MAX_FRAME_SIZE, &bp->LocalRxBufferDMA);
if (!bp->LocalRxBuffer) {
printk("could not allocate mem for ");
printk("LocalRxBuffer: %d byte\n", MAX_FRAME_SIZE);
goto fail;
}
// Determine the required size of the 'shared' memory area.
bp->SharedMemSize = mac_drv_check_space();
PRINTK(KERN_INFO "Memory for HWM: %ld\n", bp->SharedMemSize);
if (bp->SharedMemSize > 0) {
bp->SharedMemSize += 16; // for descriptor alignment
bp->SharedMemAddr = pci_alloc_consistent(&bp->pdev,
bp->SharedMemSize,
&bp->SharedMemDMA);
if (!bp->SharedMemSize) {
printk("could not allocate mem for ");
printk("hardware module: %ld byte\n",
bp->SharedMemSize);
goto fail;
}
bp->SharedMemHeap = 0; // Nothing used yet.
} else {
bp->SharedMemAddr = NULL;
bp->SharedMemHeap = 0;
} // SharedMemSize > 0
memset(bp->SharedMemAddr, 0, bp->SharedMemSize);
card_stop(smc); // Reset adapter.
PRINTK(KERN_INFO "mac_drv_init()..\n");
if (mac_drv_init(smc) != 0) {
PRINTK(KERN_INFO "mac_drv_init() failed.\n");
goto fail;
}
read_address(smc, NULL);
PRINTK(KERN_INFO "HW-Addr: %02x %02x %02x %02x %02x %02x\n",
smc->hw.fddi_canon_addr.a[0],
smc->hw.fddi_canon_addr.a[1],
smc->hw.fddi_canon_addr.a[2],
smc->hw.fddi_canon_addr.a[3],
smc->hw.fddi_canon_addr.a[4],
smc->hw.fddi_canon_addr.a[5]);
memcpy(dev->dev_addr, smc->hw.fddi_canon_addr.a, 6);
smt_reset_defaults(smc, 0);
return (0);
fail:
if (bp->SharedMemAddr) {
pci_free_consistent(&bp->pdev,
bp->SharedMemSize,
bp->SharedMemAddr,
bp->SharedMemDMA);
bp->SharedMemAddr = NULL;
}
if (bp->LocalRxBuffer) {
pci_free_consistent(&bp->pdev, MAX_FRAME_SIZE,
bp->LocalRxBuffer, bp->LocalRxBufferDMA);
bp->LocalRxBuffer = NULL;
}
return err;
} // skfp_driver_init
/*
* =============
* = skfp_open =
* =============
*
* Overview:
* Opens the adapter
*
* Returns:
* Condition code
*
* Arguments:
* dev - pointer to device information
*
* Functional Description:
* This function brings the adapter to an operational state.
*
* Return Codes:
* 0 - Adapter was successfully opened
* -EAGAIN - Could not register IRQ
*/
static int skfp_open(struct net_device *dev)
{
struct s_smc *smc = netdev_priv(dev);
int err;
PRINTK(KERN_INFO "entering skfp_open\n");
/* Register IRQ - support shared interrupts by passing device ptr */
err = request_irq(dev->irq, (void *) skfp_interrupt, IRQF_SHARED,
dev->name, dev);
if (err)
return err;
/*
* Set current address to factory MAC address
*
* Note: We've already done this step in skfp_driver_init.
* However, it's possible that a user has set a node
* address override, then closed and reopened the
* adapter. Unless we reset the device address field
* now, we'll continue to use the existing modified
* address.
*/
read_address(smc, NULL);
memcpy(dev->dev_addr, smc->hw.fddi_canon_addr.a, 6);
init_smt(smc, NULL);
smt_online(smc, 1);
STI_FBI();
/* Clear local multicast address tables */
mac_clear_multicast(smc);
/* Disable promiscuous filter settings */
mac_drv_rx_mode(smc, RX_DISABLE_PROMISC);
netif_start_queue(dev);
return (0);
} // skfp_open
/*
* ==============
* = skfp_close =
* ==============
*
* Overview:
* Closes the device/module.
*
* Returns:
* Condition code
*
* Arguments:
* dev - pointer to device information
*
* Functional Description:
* This routine closes the adapter and brings it to a safe state.
* The interrupt service routine is deregistered with the OS.
* The adapter can be opened again with another call to skfp_open().
*
* Return Codes:
* Always return 0.
*
* Assumptions:
* No further requests for this adapter are made after this routine is
* called. skfp_open() can be called to reset and reinitialize the
* adapter.
*/
static int skfp_close(struct net_device *dev)
{
struct s_smc *smc = netdev_priv(dev);
skfddi_priv *bp = &smc->os;
CLI_FBI();
smt_reset_defaults(smc, 1);
card_stop(smc);
mac_drv_clear_tx_queue(smc);
mac_drv_clear_rx_queue(smc);
netif_stop_queue(dev);
/* Deregister (free) IRQ */
free_irq(dev->irq, dev);
skb_queue_purge(&bp->SendSkbQueue);
bp->QueueSkb = MAX_TX_QUEUE_LEN;
return (0);
} // skfp_close
/*
* ==================
* = skfp_interrupt =
* ==================
*
* Overview:
* Interrupt processing routine
*
* Returns:
* None
*
* Arguments:
* irq - interrupt vector
* dev_id - pointer to device information
*
* Functional Description:
* This routine calls the interrupt processing routine for this adapter. It
* disables and reenables adapter interrupts, as appropriate. We can support
* shared interrupts since the incoming dev_id pointer provides our device
* structure context. All the real work is done in the hardware module.
*
* Return Codes:
* None
*
* Assumptions:
* The interrupt acknowledgement at the hardware level (eg. ACKing the PIC
* on Intel-based systems) is done by the operating system outside this
* routine.
*
* System interrupts are enabled through this call.
*
* Side Effects:
* Interrupts are disabled, then reenabled at the adapter.
*/
irqreturn_t skfp_interrupt(int irq, void *dev_id)
{
struct net_device *dev = (struct net_device *) dev_id;
struct s_smc *smc; /* private board structure pointer */
skfddi_priv *bp;
if (dev == NULL) {
printk("%s: irq %d for unknown device\n", dev->name, irq);
return IRQ_NONE;
}
smc = netdev_priv(dev);
bp = &smc->os;
// IRQs enabled or disabled ?
if (inpd(ADDR(B0_IMSK)) == 0) {
// IRQs are disabled: must be shared interrupt
return IRQ_NONE;
}
// Note: At this point, IRQs are enabled.
if ((inpd(ISR_A) & smc->hw.is_imask) == 0) { // IRQ?
// Adapter did not issue an IRQ: must be shared interrupt
return IRQ_NONE;
}
CLI_FBI(); // Disable IRQs from our adapter.
spin_lock(&bp->DriverLock);
// Call interrupt handler in hardware module (HWM).
fddi_isr(smc);
if (smc->os.ResetRequested) {
ResetAdapter(smc);
smc->os.ResetRequested = FALSE;
}
spin_unlock(&bp->DriverLock);
STI_FBI(); // Enable IRQs from our adapter.
return IRQ_HANDLED;
} // skfp_interrupt
/*
* ======================
* = skfp_ctl_get_stats =
* ======================
*
* Overview:
* Get statistics for FDDI adapter
*
* Returns:
* Pointer to FDDI statistics structure
*
* Arguments:
* dev - pointer to device information
*
* Functional Description:
* Gets current MIB objects from adapter, then
* returns FDDI statistics structure as defined
* in if_fddi.h.
*
* Note: Since the FDDI statistics structure is
* still new and the device structure doesn't
* have an FDDI-specific get statistics handler,
* we'll return the FDDI statistics structure as
* a pointer to an Ethernet statistics structure.
* That way, at least the first part of the statistics
* structure can be decoded properly.
* We'll have to pay attention to this routine as the
* device structure becomes more mature and LAN media
* independent.
*
*/
struct net_device_stats *skfp_ctl_get_stats(struct net_device *dev)
{
struct s_smc *bp = netdev_priv(dev);
/* Fill the bp->stats structure with driver-maintained counters */
bp->os.MacStat.port_bs_flag[0] = 0x1234;
bp->os.MacStat.port_bs_flag[1] = 0x5678;
// goos: need to fill out fddi statistic
#if 0
/* Get FDDI SMT MIB objects */
/* Fill the bp->stats structure with the SMT MIB object values */
memcpy(bp->stats.smt_station_id, &bp->cmd_rsp_virt->smt_mib_get.smt_station_id, sizeof(bp->cmd_rsp_virt->smt_mib_get.smt_station_id));
bp->stats.smt_op_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_op_version_id;
bp->stats.smt_hi_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_hi_version_id;
bp->stats.smt_lo_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_lo_version_id;
memcpy(bp->stats.smt_user_data, &bp->cmd_rsp_virt->smt_mib_get.smt_user_data, sizeof(bp->cmd_rsp_virt->smt_mib_get.smt_user_data));
bp->stats.smt_mib_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_mib_version_id;
bp->stats.smt_mac_cts = bp->cmd_rsp_virt->smt_mib_get.smt_mac_ct;
bp->stats.smt_non_master_cts = bp->cmd_rsp_virt->smt_mib_get.smt_non_master_ct;
bp->stats.smt_master_cts = bp->cmd_rsp_virt->smt_mib_get.smt_master_ct;
bp->stats.smt_available_paths = bp->cmd_rsp_virt->smt_mib_get.smt_available_paths;
bp->stats.smt_config_capabilities = bp->cmd_rsp_virt->smt_mib_get.smt_config_capabilities;
bp->stats.smt_config_policy = bp->cmd_rsp_virt->smt_mib_get.smt_config_policy;
bp->stats.smt_connection_policy = bp->cmd_rsp_virt->smt_mib_get.smt_connection_policy;
bp->stats.smt_t_notify = bp->cmd_rsp_virt->smt_mib_get.smt_t_notify;
bp->stats.smt_stat_rpt_policy = bp->cmd_rsp_virt->smt_mib_get.smt_stat_rpt_policy;
bp->stats.smt_trace_max_expiration = bp->cmd_rsp_virt->smt_mib_get.smt_trace_max_expiration;
bp->stats.smt_bypass_present = bp->cmd_rsp_virt->smt_mib_get.smt_bypass_present;
bp->stats.smt_ecm_state = bp->cmd_rsp_virt->smt_mib_get.smt_ecm_state;
bp->stats.smt_cf_state = bp->cmd_rsp_virt->smt_mib_get.smt_cf_state;
bp->stats.smt_remote_disconnect_flag = bp->cmd_rsp_virt->smt_mib_get.smt_remote_disconnect_flag;
bp->stats.smt_station_status = bp->cmd_rsp_virt->smt_mib_get.smt_station_status;
bp->stats.smt_peer_wrap_flag = bp->cmd_rsp_virt->smt_mib_get.smt_peer_wrap_flag;
bp->stats.smt_time_stamp = bp->cmd_rsp_virt->smt_mib_get.smt_msg_time_stamp.ls;
bp->stats.smt_transition_time_stamp = bp->cmd_rsp_virt->smt_mib_get.smt_transition_time_stamp.ls;
bp->stats.mac_frame_status_functions = bp->cmd_rsp_virt->smt_mib_get.mac_frame_status_functions;
bp->stats.mac_t_max_capability = bp->cmd_rsp_virt->smt_mib_get.mac_t_max_capability;
bp->stats.mac_tvx_capability = bp->cmd_rsp_virt->smt_mib_get.mac_tvx_capability;
bp->stats.mac_available_paths = bp->cmd_rsp_virt->smt_mib_get.mac_available_paths;
bp->stats.mac_current_path = bp->cmd_rsp_virt->smt_mib_get.mac_current_path;
memcpy(bp->stats.mac_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_upstream_nbr, FDDI_K_ALEN);
memcpy(bp->stats.mac_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_downstream_nbr, FDDI_K_ALEN);
memcpy(bp->stats.mac_old_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_upstream_nbr, FDDI_K_ALEN);
memcpy(bp->stats.mac_old_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_downstream_nbr, FDDI_K_ALEN);
bp->stats.mac_dup_address_test = bp->cmd_rsp_virt->smt_mib_get.mac_dup_address_test;
bp->stats.mac_requested_paths = bp->cmd_rsp_virt->smt_mib_get.mac_requested_paths;
bp->stats.mac_downstream_port_type = bp->cmd_rsp_virt->smt_mib_get.mac_downstream_port_type;
memcpy(bp->stats.mac_smt_address, &bp->cmd_rsp_virt->smt_mib_get.mac_smt_address, FDDI_K_ALEN);
bp->stats.mac_t_req = bp->cmd_rsp_virt->smt_mib_get.mac_t_req;
bp->stats.mac_t_neg = bp->cmd_rsp_virt->smt_mib_get.mac_t_neg;
bp->stats.mac_t_max = bp->cmd_rsp_virt->smt_mib_get.mac_t_max;
bp->stats.mac_tvx_value = bp->cmd_rsp_virt->smt_mib_get.mac_tvx_value;
bp->stats.mac_frame_error_threshold = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_threshold;
bp->stats.mac_frame_error_ratio = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_ratio;
bp->stats.mac_rmt_state = bp->cmd_rsp_virt->smt_mib_get.mac_rmt_state;
bp->stats.mac_da_flag = bp->cmd_rsp_virt->smt_mib_get.mac_da_flag;
bp->stats.mac_una_da_flag = bp->cmd_rsp_virt->smt_mib_get.mac_unda_flag;
bp->stats.mac_frame_error_flag = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_flag;
bp->stats.mac_ma_unitdata_available = bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_available;
bp->stats.mac_hardware_present = bp->cmd_rsp_virt->smt_mib_get.mac_hardware_present;
bp->stats.mac_ma_unitdata_enable = bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_enable;
bp->stats.path_tvx_lower_bound = bp->cmd_rsp_virt->smt_mib_get.path_tvx_lower_bound;
bp->stats.path_t_max_lower_bound = bp->cmd_rsp_virt->smt_mib_get.path_t_max_lower_bound;
bp->stats.path_max_t_req = bp->cmd_rsp_virt->smt_mib_get.path_max_t_req;
memcpy(bp->stats.path_configuration, &bp->cmd_rsp_virt->smt_mib_get.path_configuration, sizeof(bp->cmd_rsp_virt->smt_mib_get.path_configuration));
bp->stats.port_my_type[0] = bp->cmd_rsp_virt->smt_mib_get.port_my_type[0];
bp->stats.port_my_type[1] = bp->cmd_rsp_virt->smt_mib_get.port_my_type[1];
bp->stats.port_neighbor_type[0] = bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[0];
bp->stats.port_neighbor_type[1] = bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[1];
bp->stats.port_connection_policies[0] = bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[0];
bp->stats.port_connection_policies[1] = bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[1];
bp->stats.port_mac_indicated[0] = bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[0];
bp->stats.port_mac_indicated[1] = bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[1];
bp->stats.port_current_path[0] = bp->cmd_rsp_virt->smt_mib_get.port_current_path[0];
bp->stats.port_current_path[1] = bp->cmd_rsp_virt->smt_mib_get.port_current_path[1];
memcpy(&bp->stats.port_requested_paths[0 * 3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[0], 3);
memcpy(&bp->stats.port_requested_paths[1 * 3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[1], 3);
bp->stats.port_mac_placement[0] = bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[0];
bp->stats.port_mac_placement[1] = bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[1];
bp->stats.port_available_paths[0] = bp->cmd_rsp_virt->smt_mib_get.port_available_paths[0];
bp->stats.port_available_paths[1] = bp->cmd_rsp_virt->smt_mib_get.port_available_paths[1];
bp->stats.port_pmd_class[0] = bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[0];
bp->stats.port_pmd_class[1] = bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[1];
bp->stats.port_connection_capabilities[0] = bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[0];
bp->stats.port_connection_capabilities[1] = bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[1];
bp->stats.port_bs_flag[0] = bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[0];
bp->stats.port_bs_flag[1] = bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[1];
bp->stats.port_ler_estimate[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[0];
bp->stats.port_ler_estimate[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[1];
bp->stats.port_ler_cutoff[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[0];
bp->stats.port_ler_cutoff[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[1];
bp->stats.port_ler_alarm[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[0];
bp->stats.port_ler_alarm[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[1];
bp->stats.port_connect_state[0] = bp->cmd_rsp_virt->smt_mib_get.port_connect_state[0];
bp->stats.port_connect_state[1] = bp->cmd_rsp_virt->smt_mib_get.port_connect_state[1];
bp->stats.port_pcm_state[0] = bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[0];
bp->stats.port_pcm_state[1] = bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[1];
bp->stats.port_pc_withhold[0] = bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[0];
bp->stats.port_pc_withhold[1] = bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[1];
bp->stats.port_ler_flag[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[0];
bp->stats.port_ler_flag[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[1];
bp->stats.port_hardware_present[0] = bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[0];
bp->stats.port_hardware_present[1] = bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[1];
/* Fill the bp->stats structure with the FDDI counter values */
bp->stats.mac_frame_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.frame_cnt.ls;
bp->stats.mac_copied_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.copied_cnt.ls;
bp->stats.mac_transmit_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.transmit_cnt.ls;
bp->stats.mac_error_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.error_cnt.ls;
bp->stats.mac_lost_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.lost_cnt.ls;
bp->stats.port_lct_fail_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[0].ls;
bp->stats.port_lct_fail_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[1].ls;
bp->stats.port_lem_reject_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[0].ls;
bp->stats.port_lem_reject_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[1].ls;
bp->stats.port_lem_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[0].ls;
bp->stats.port_lem_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[1].ls;
#endif
return ((struct net_device_stats *) &bp->os.MacStat);
} // ctl_get_stat
/*
* ==============================
* = skfp_ctl_set_multicast_list =
* ==============================
*
* Overview:
* Enable/Disable LLC frame promiscuous mode reception
* on the adapter and/or update multicast address table.
*
* Returns:
* None
*
* Arguments:
* dev - pointer to device information
*
* Functional Description:
* This function acquires the driver lock and only calls
* skfp_ctl_set_multicast_list_wo_lock then.
* This routine follows a fairly simple algorithm for setting the
* adapter filters and CAM:
*
* if IFF_PROMISC flag is set
* enable promiscuous mode
* else
* disable promiscuous mode
* if number of multicast addresses <= max. multicast number
* add mc addresses to adapter table
* else
* enable promiscuous mode
* update adapter filters
*
* Assumptions:
* Multicast addresses are presented in canonical (LSB) format.
*
* Side Effects:
* On-board adapter filters are updated.
*/
static void skfp_ctl_set_multicast_list(struct net_device *dev)
{
struct s_smc *smc = netdev_priv(dev);
skfddi_priv *bp = &smc->os;
unsigned long Flags;
spin_lock_irqsave(&bp->DriverLock, Flags);
skfp_ctl_set_multicast_list_wo_lock(dev);
spin_unlock_irqrestore(&bp->DriverLock, Flags);
return;
} // skfp_ctl_set_multicast_list
static void skfp_ctl_set_multicast_list_wo_lock(struct net_device *dev)
{
struct s_smc *smc = netdev_priv(dev);
struct dev_mc_list *dmi; /* ptr to multicast addr entry */
int i;
/* Enable promiscuous mode, if necessary */
if (dev->flags & IFF_PROMISC) {
mac_drv_rx_mode(smc, RX_ENABLE_PROMISC);
PRINTK(KERN_INFO "PROMISCUOUS MODE ENABLED\n");
}
/* Else, update multicast address table */
else {
mac_drv_rx_mode(smc, RX_DISABLE_PROMISC);
PRINTK(KERN_INFO "PROMISCUOUS MODE DISABLED\n");
// Reset all MC addresses
mac_clear_multicast(smc);
mac_drv_rx_mode(smc, RX_DISABLE_ALLMULTI);
if (dev->flags & IFF_ALLMULTI) {
mac_drv_rx_mode(smc, RX_ENABLE_ALLMULTI);
PRINTK(KERN_INFO "ENABLE ALL MC ADDRESSES\n");
} else if (dev->mc_count > 0) {
if (dev->mc_count <= FPMAX_MULTICAST) {
/* use exact filtering */
// point to first multicast addr
dmi = dev->mc_list;
for (i = 0; i < dev->mc_count; i++) {
mac_add_multicast(smc,
(struct fddi_addr *)dmi->dmi_addr,
1);
PRINTK(KERN_INFO "ENABLE MC ADDRESS:");
PRINTK(" %02x %02x %02x ",
dmi->dmi_addr[0],
dmi->dmi_addr[1],
dmi->dmi_addr[2]);
PRINTK("%02x %02x %02x\n",
dmi->dmi_addr[3],
dmi->dmi_addr[4],
dmi->dmi_addr[5]);
dmi = dmi->next;
} // for
} else { // more MC addresses than HW supports
mac_drv_rx_mode(smc, RX_ENABLE_ALLMULTI);
PRINTK(KERN_INFO "ENABLE ALL MC ADDRESSES\n");
}
} else { // no MC addresses
PRINTK(KERN_INFO "DISABLE ALL MC ADDRESSES\n");
}
/* Update adapter filters */
mac_update_multicast(smc);
}
return;
} // skfp_ctl_set_multicast_list_wo_lock
/*
* ===========================
* = skfp_ctl_set_mac_address =
* ===========================
*
* Overview:
* set new mac address on adapter and update dev_addr field in device table.
*
* Returns:
* None
*
* Arguments:
* dev - pointer to device information
* addr - pointer to sockaddr structure containing unicast address to set
*
* Assumptions:
* The address pointed to by addr->sa_data is a valid unicast
* address and is presented in canonical (LSB) format.
*/
static int skfp_ctl_set_mac_address(struct net_device *dev, void *addr)
{
struct s_smc *smc = netdev_priv(dev);
struct sockaddr *p_sockaddr = (struct sockaddr *) addr;
skfddi_priv *bp = &smc->os;
unsigned long Flags;
memcpy(dev->dev_addr, p_sockaddr->sa_data, FDDI_K_ALEN);
spin_lock_irqsave(&bp->DriverLock, Flags);
ResetAdapter(smc);
spin_unlock_irqrestore(&bp->DriverLock, Flags);
return (0); /* always return zero */
} // skfp_ctl_set_mac_address
/*
* ==============
* = skfp_ioctl =
* ==============
*
* Overview:
*
* Perform IOCTL call functions here. Some are privileged operations and the
* effective uid is checked in those cases.
*
* Returns:
* status value
* 0 - success
* other - failure
*
* Arguments:
* dev - pointer to device information
* rq - pointer to ioctl request structure
* cmd - ?
*
*/
static int skfp_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct s_smc *smc = netdev_priv(dev);
skfddi_priv *lp = &smc->os;
struct s_skfp_ioctl ioc;
int status = 0;
if (copy_from_user(&ioc, rq->ifr_data, sizeof(struct s_skfp_ioctl)))
return -EFAULT;
switch (ioc.cmd) {
case SKFP_GET_STATS: /* Get the driver statistics */
ioc.len = sizeof(lp->MacStat);
status = copy_to_user(ioc.data, skfp_ctl_get_stats(dev), ioc.len)
? -EFAULT : 0;
break;
case SKFP_CLR_STATS: /* Zero out the driver statistics */
if (!capable(CAP_NET_ADMIN)) {
memset(&lp->MacStat, 0, sizeof(lp->MacStat));
} else {
status = -EPERM;
}
break;
default:
printk("ioctl for %s: unknow cmd: %04x\n", dev->name, ioc.cmd);
status = -EOPNOTSUPP;
} // switch
return status;
} // skfp_ioctl
/*
* =====================
* = skfp_send_pkt =
* =====================
*
* Overview:
* Queues a packet for transmission and try to transmit it.
*
* Returns:
* Condition code
*
* Arguments:
* skb - pointer to sk_buff to queue for transmission
* dev - pointer to device information
*
* Functional Description:
* Here we assume that an incoming skb transmit request
* is contained in a single physically contiguous buffer
* in which the virtual address of the start of packet
* (skb->data) can be converted to a physical address
* by using pci_map_single().
*
* We have an internal queue for packets we can not send
* immediately. Packets in this queue can be given to the
* adapter if transmit buffers are freed.
*
* We can't free the skb until after it's been DMA'd
* out by the adapter, so we'll keep it in the driver and
* return it in mac_drv_tx_complete.
*
* Return Codes:
* 0 - driver has queued and/or sent packet
* 1 - caller should requeue the sk_buff for later transmission
*
* Assumptions:
* The entire packet is stored in one physically
* contiguous buffer which is not cached and whose
* 32-bit physical address can be determined.
*
* It's vital that this routine is NOT reentered for the
* same board and that the OS is not in another section of
* code (eg. skfp_interrupt) for the same board on a
* different thread.
*
* Side Effects:
* None
*/
static int skfp_send_pkt(struct sk_buff *skb, struct net_device *dev)
{
struct s_smc *smc = netdev_priv(dev);
skfddi_priv *bp = &smc->os;
PRINTK(KERN_INFO "skfp_send_pkt\n");
/*
* Verify that incoming transmit request is OK
*
* Note: The packet size check is consistent with other
* Linux device drivers, although the correct packet
* size should be verified before calling the
* transmit routine.
*/
if (!(skb->len >= FDDI_K_LLC_ZLEN && skb->len <= FDDI_K_LLC_LEN)) {
bp->MacStat.gen.tx_errors++; /* bump error counter */
// dequeue packets from xmt queue and send them
netif_start_queue(dev);
dev_kfree_skb(skb);
return (0); /* return "success" */
}
if (bp->QueueSkb == 0) { // return with tbusy set: queue full
netif_stop_queue(dev);
return 1;
}
bp->QueueSkb--;
skb_queue_tail(&bp->SendSkbQueue, skb);
send_queued_packets(netdev_priv(dev));
if (bp->QueueSkb == 0) {
netif_stop_queue(dev);
}
dev->trans_start = jiffies;
return 0;
} // skfp_send_pkt
/*
* =======================
* = send_queued_packets =
* =======================
*
* Overview:
* Send packets from the driver queue as long as there are some and
* transmit resources are available.
*
* Returns:
* None
*
* Arguments:
* smc - pointer to smc (adapter) structure
*
* Functional Description:
* Take a packet from queue if there is any. If not, then we are done.
* Check if there are resources to send the packet. If not, requeue it
* and exit.
* Set packet descriptor flags and give packet to adapter.
* Check if any send resources can be freed (we do not use the
* transmit complete interrupt).
*/
static void send_queued_packets(struct s_smc *smc)
{
skfddi_priv *bp = &smc->os;
struct sk_buff *skb;
unsigned char fc;
int queue;
struct s_smt_fp_txd *txd; // Current TxD.
dma_addr_t dma_address;
unsigned long Flags;
int frame_status; // HWM tx frame status.
PRINTK(KERN_INFO "send queued packets\n");
for (;;) {
// send first buffer from queue
skb = skb_dequeue(&bp->SendSkbQueue);
if (!skb) {
PRINTK(KERN_INFO "queue empty\n");
return;
} // queue empty !
spin_lock_irqsave(&bp->DriverLock, Flags);
fc = skb->data[0];
queue = (fc & FC_SYNC_BIT) ? QUEUE_S : QUEUE_A0;
#ifdef ESS
// Check if the frame may/must be sent as a synchronous frame.
if ((fc & ~(FC_SYNC_BIT | FC_LLC_PRIOR)) == FC_ASYNC_LLC) {
// It's an LLC frame.
if (!smc->ess.sync_bw_available)
fc &= ~FC_SYNC_BIT; // No bandwidth available.
else { // Bandwidth is available.
if (smc->mib.fddiESSSynchTxMode) {
// Send as sync. frame.
fc |= FC_SYNC_BIT;
}
}
}
#endif // ESS
frame_status = hwm_tx_init(smc, fc, 1, skb->len, queue);
if ((frame_status & (LOC_TX | LAN_TX)) == 0) {
// Unable to send the frame.
if ((frame_status & RING_DOWN) != 0) {
// Ring is down.
PRINTK("Tx attempt while ring down.\n");
} else if ((frame_status & OUT_OF_TXD) != 0) {
PRINTK("%s: out of TXDs.\n", bp->dev->name);
} else {
PRINTK("%s: out of transmit resources",
bp->dev->name);
}
// Note: We will retry the operation as soon as
// transmit resources become available.
skb_queue_head(&bp->SendSkbQueue, skb);
spin_unlock_irqrestore(&bp->DriverLock, Flags);
return; // Packet has been queued.
} // if (unable to send frame)
bp->QueueSkb++; // one packet less in local queue
// source address in packet ?
CheckSourceAddress(skb->data, smc->hw.fddi_canon_addr.a);
txd = (struct s_smt_fp_txd *) HWM_GET_CURR_TXD(smc, queue);
dma_address = pci_map_single(&bp->pdev, skb->data,
skb->len, PCI_DMA_TODEVICE);
if (frame_status & LAN_TX) {
txd->txd_os.skb = skb; // save skb
txd->txd_os.dma_addr = dma_address; // save dma mapping
}
hwm_tx_frag(smc, skb->data, dma_address, skb->len,
frame_status | FIRST_FRAG | LAST_FRAG | EN_IRQ_EOF);
if (!(frame_status & LAN_TX)) { // local only frame
pci_unmap_single(&bp->pdev, dma_address,
skb->len, PCI_DMA_TODEVICE);
dev_kfree_skb_irq(skb);
}
spin_unlock_irqrestore(&bp->DriverLock, Flags);
} // for
return; // never reached
} // send_queued_packets
/************************
*
* CheckSourceAddress
*
* Verify if the source address is set. Insert it if necessary.
*
************************/
void CheckSourceAddress(unsigned char *frame, unsigned char *hw_addr)
{
unsigned char SRBit;
if ((((unsigned long) frame[1 + 6]) & ~0x01) != 0) // source routing bit
return;
if ((unsigned short) frame[1 + 10] != 0)
return;
SRBit = frame[1 + 6] & 0x01;
memcpy(&frame[1 + 6], hw_addr, 6);
frame[8] |= SRBit;
} // CheckSourceAddress
/************************
*
* ResetAdapter
*
* Reset the adapter and bring it back to operational mode.
* Args
* smc - A pointer to the SMT context struct.
* Out
* Nothing.
*
************************/
static void ResetAdapter(struct s_smc *smc)
{
PRINTK(KERN_INFO "[fddi: ResetAdapter]\n");
// Stop the adapter.
card_stop(smc); // Stop all activity.
// Clear the transmit and receive descriptor queues.
mac_drv_clear_tx_queue(smc);
mac_drv_clear_rx_queue(smc);
// Restart the adapter.
smt_reset_defaults(smc, 1); // Initialize the SMT module.
init_smt(smc, (smc->os.dev)->dev_addr); // Initialize the hardware.
smt_online(smc, 1); // Insert into the ring again.
STI_FBI();
// Restore original receive mode (multicasts, promiscuous, etc.).
skfp_ctl_set_multicast_list_wo_lock(smc->os.dev);
} // ResetAdapter
//--------------- functions called by hardware module ----------------
/************************
*
* llc_restart_tx
*
* The hardware driver calls this routine when the transmit complete
* interrupt bits (end of frame) for the synchronous or asynchronous
* queue is set.
*
* NOTE The hardware driver calls this function also if no packets are queued.
* The routine must be able to handle this case.
* Args
* smc - A pointer to the SMT context struct.
* Out
* Nothing.
*
************************/
void llc_restart_tx(struct s_smc *smc)
{
skfddi_priv *bp = &smc->os;
PRINTK(KERN_INFO "[llc_restart_tx]\n");
// Try to send queued packets
spin_unlock(&bp->DriverLock);
send_queued_packets(smc);
spin_lock(&bp->DriverLock);
netif_start_queue(bp->dev);// system may send again if it was blocked
} // llc_restart_tx
/************************
*
* mac_drv_get_space
*
* The hardware module calls this function to allocate the memory
* for the SMT MBufs if the define MB_OUTSIDE_SMC is specified.
* Args
* smc - A pointer to the SMT context struct.
*
* size - Size of memory in bytes to allocate.
* Out
* != 0 A pointer to the virtual address of the allocated memory.
* == 0 Allocation error.
*
************************/
void *mac_drv_get_space(struct s_smc *smc, unsigned int size)
{
void *virt;
PRINTK(KERN_INFO "mac_drv_get_space (%d bytes), ", size);
virt = (void *) (smc->os.SharedMemAddr + smc->os.SharedMemHeap);
if ((smc->os.SharedMemHeap + size) > smc->os.SharedMemSize) {
printk("Unexpected SMT memory size requested: %d\n", size);
return (NULL);
}
smc->os.SharedMemHeap += size; // Move heap pointer.
PRINTK(KERN_INFO "mac_drv_get_space end\n");
PRINTK(KERN_INFO "virt addr: %lx\n", (ulong) virt);
PRINTK(KERN_INFO "bus addr: %lx\n", (ulong)
(smc->os.SharedMemDMA +
((char *) virt - (char *)smc->os.SharedMemAddr)));
return (virt);
} // mac_drv_get_space
/************************
*
* mac_drv_get_desc_mem
*
* This function is called by the hardware dependent module.
* It allocates the memory for the RxD and TxD descriptors.
*
* This memory must be non-cached, non-movable and non-swappable.
* This memory should start at a physical page boundary.
* Args
* smc - A pointer to the SMT context struct.
*
* size - Size of memory in bytes to allocate.
* Out
* != 0 A pointer to the virtual address of the allocated memory.
* == 0 Allocation error.
*
************************/
void *mac_drv_get_desc_mem(struct s_smc *smc, unsigned int size)
{
char *virt;
PRINTK(KERN_INFO "mac_drv_get_desc_mem\n");
// Descriptor memory must be aligned on 16-byte boundary.
virt = mac_drv_get_space(smc, size);
size = (u_int) (16 - (((unsigned long) virt) & 15UL));
size = size % 16;
PRINTK("Allocate %u bytes alignment gap ", size);
PRINTK("for descriptor memory.\n");
if (!mac_drv_get_space(smc, size)) {
printk("fddi: Unable to align descriptor memory.\n");
return (NULL);
}
return (virt + size);
} // mac_drv_get_desc_mem
/************************
*
* mac_drv_virt2phys
*
* Get the physical address of a given virtual address.
* Args
* smc - A pointer to the SMT context struct.
*
* virt - A (virtual) pointer into our 'shared' memory area.
* Out
* Physical address of the given virtual address.
*
************************/
unsigned long mac_drv_virt2phys(struct s_smc *smc, void *virt)
{
return (smc->os.SharedMemDMA +
((char *) virt - (char *)smc->os.SharedMemAddr));
} // mac_drv_virt2phys
/************************
*
* dma_master
*
* The HWM calls this function, when the driver leads through a DMA
* transfer. If the OS-specific module must prepare the system hardware
* for the DMA transfer, it should do it in this function.
*
* The hardware module calls this dma_master if it wants to send an SMT
* frame. This means that the virt address passed in here is part of
* the 'shared' memory area.
* Args
* smc - A pointer to the SMT context struct.
*
* virt - The virtual address of the data.
*
* len - The length in bytes of the data.
*
* flag - Indicates the transmit direction and the buffer type:
* DMA_RD (0x01) system RAM ==> adapter buffer memory
* DMA_WR (0x02) adapter buffer memory ==> system RAM
* SMT_BUF (0x80) SMT buffer
*
* >> NOTE: SMT_BUF and DMA_RD are always set for PCI. <<
* Out
* Returns the pyhsical address for the DMA transfer.
*
************************/
u_long dma_master(struct s_smc * smc, void *virt, int len, int flag)
{
return (smc->os.SharedMemDMA +
((char *) virt - (char *)smc->os.SharedMemAddr));
} // dma_master
/************************
*
* dma_complete
*
* The hardware module calls this routine when it has completed a DMA
* transfer. If the operating system dependent module has set up the DMA
* channel via dma_master() (e.g. Windows NT or AIX) it should clean up
* the DMA channel.
* Args
* smc - A pointer to the SMT context struct.
*
* descr - A pointer to a TxD or RxD, respectively.
*
* flag - Indicates the DMA transfer direction / SMT buffer:
* DMA_RD (0x01) system RAM ==> adapter buffer memory
* DMA_WR (0x02) adapter buffer memory ==> system RAM
* SMT_BUF (0x80) SMT buffer (managed by HWM)
* Out
* Nothing.
*
************************/
void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr, int flag)
{
/* For TX buffers, there are two cases. If it is an SMT transmit
* buffer, there is nothing to do since we use consistent memory
* for the 'shared' memory area. The other case is for normal
* transmit packets given to us by the networking stack, and in
* that case we cleanup the PCI DMA mapping in mac_drv_tx_complete
* below.
*
* For RX buffers, we have to unmap dynamic PCI DMA mappings here
* because the hardware module is about to potentially look at
* the contents of the buffer. If we did not call the PCI DMA
* unmap first, the hardware module could read inconsistent data.
*/
if (flag & DMA_WR) {
skfddi_priv *bp = &smc->os;
volatile struct s_smt_fp_rxd *r = &descr->r;
/* If SKB is NULL, we used the local buffer. */
if (r->rxd_os.skb && r->rxd_os.dma_addr) {
int MaxFrameSize = bp->MaxFrameSize;
pci_unmap_single(&bp->pdev, r->rxd_os.dma_addr,
MaxFrameSize, PCI_DMA_FROMDEVICE);
r->rxd_os.dma_addr = 0;
}
}
} // dma_complete
/************************
*
* mac_drv_tx_complete
*
* Transmit of a packet is complete. Release the tx staging buffer.
*
* Args
* smc - A pointer to the SMT context struct.
*
* txd - A pointer to the last TxD which is used by the frame.
* Out
* Returns nothing.
*
************************/
void mac_drv_tx_complete(struct s_smc *smc, volatile struct s_smt_fp_txd *txd)
{
struct sk_buff *skb;
PRINTK(KERN_INFO "entering mac_drv_tx_complete\n");
// Check if this TxD points to a skb
if (!(skb = txd->txd_os.skb)) {
PRINTK("TXD with no skb assigned.\n");
return;
}
txd->txd_os.skb = NULL;
// release the DMA mapping
pci_unmap_single(&smc->os.pdev, txd->txd_os.dma_addr,
skb->len, PCI_DMA_TODEVICE);
txd->txd_os.dma_addr = 0;
smc->os.MacStat.gen.tx_packets++; // Count transmitted packets.
smc->os.MacStat.gen.tx_bytes+=skb->len; // Count bytes
// free the skb
dev_kfree_skb_irq(skb);
PRINTK(KERN_INFO "leaving mac_drv_tx_complete\n");
} // mac_drv_tx_complete
/************************
*
* dump packets to logfile
*
************************/
#ifdef DUMPPACKETS
void dump_data(unsigned char *Data, int length)
{
int i, j;
unsigned char s[255], sh[10];
if (length > 64) {
length = 64;
}
printk(KERN_INFO "---Packet start---\n");
for (i = 0, j = 0; i < length / 8; i++, j += 8)
printk(KERN_INFO "%02x %02x %02x %02x %02x %02x %02x %02x\n",
Data[j + 0], Data[j + 1], Data[j + 2], Data[j + 3],
Data[j + 4], Data[j + 5], Data[j + 6], Data[j + 7]);
strcpy(s, "");
for (i = 0; i < length % 8; i++) {
sprintf(sh, "%02x ", Data[j + i]);
strcat(s, sh);
}
printk(KERN_INFO "%s\n", s);
printk(KERN_INFO "------------------\n");
} // dump_data
#else
#define dump_data(data,len)
#endif // DUMPPACKETS
/************************
*
* mac_drv_rx_complete
*
* The hardware module calls this function if an LLC frame is received
* in a receive buffer. Also the SMT, NSA, and directed beacon frames
* from the network will be passed to the LLC layer by this function
* if passing is enabled.
*
* mac_drv_rx_complete forwards the frame to the LLC layer if it should
* be received. It also fills the RxD ring with new receive buffers if
* some can be queued.
* Args
* smc - A pointer to the SMT context struct.
*
* rxd - A pointer to the first RxD which is used by the receive frame.
*
* frag_count - Count of RxDs used by the received frame.
*
* len - Frame length.
* Out
* Nothing.
*
************************/
void mac_drv_rx_complete(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd,
int frag_count, int len)
{
skfddi_priv *bp = &smc->os;
struct sk_buff *skb;
unsigned char *virt, *cp;
unsigned short ri;
u_int RifLength;
PRINTK(KERN_INFO "entering mac_drv_rx_complete (len=%d)\n", len);
if (frag_count != 1) { // This is not allowed to happen.
printk("fddi: Multi-fragment receive!\n");
goto RequeueRxd; // Re-use the given RXD(s).
}
skb = rxd->rxd_os.skb;
if (!skb) {
PRINTK(KERN_INFO "No skb in rxd\n");
smc->os.MacStat.gen.rx_errors++;
goto RequeueRxd;
}
virt = skb->data;
// The DMA mapping was released in dma_complete above.
dump_data(skb->data, len);
/*
* FDDI Frame format:
* +-------+-------+-------+------------+--------+------------+
* | FC[1] | DA[6] | SA[6] | RIF[0..18] | LLC[3] | Data[0..n] |
* +-------+-------+-------+------------+--------+------------+
*
* FC = Frame Control
* DA = Destination Address
* SA = Source Address
* RIF = Routing Information Field
* LLC = Logical Link Control
*/
// Remove Routing Information Field (RIF), if present.
if ((virt[1 + 6] & FDDI_RII) == 0)
RifLength = 0;
else {
int n;
// goos: RIF removal has still to be tested
PRINTK(KERN_INFO "RIF found\n");
// Get RIF length from Routing Control (RC) field.
cp = virt + FDDI_MAC_HDR_LEN; // Point behind MAC header.
ri = ntohs(*((unsigned short *) cp));
RifLength = ri & FDDI_RCF_LEN_MASK;
if (len < (int) (FDDI_MAC_HDR_LEN + RifLength)) {
printk("fddi: Invalid RIF.\n");
goto RequeueRxd; // Discard the frame.
}
virt[1 + 6] &= ~FDDI_RII; // Clear RII bit.
// regions overlap
virt = cp + RifLength;
for (n = FDDI_MAC_HDR_LEN; n; n--)
*--virt = *--cp;
// adjust sbd->data pointer
skb_pull(skb, RifLength);
len -= RifLength;
RifLength = 0;
}
// Count statistics.
smc->os.MacStat.gen.rx_packets++; // Count indicated receive
// packets.
smc->os.MacStat.gen.rx_bytes+=len; // Count bytes.
// virt points to header again
if (virt[1] & 0x01) { // Check group (multicast) bit.
smc->os.MacStat.gen.multicast++;
}
// deliver frame to system
rxd->rxd_os.skb = NULL;
skb_trim(skb, len);
skb->protocol = fddi_type_trans(skb, bp->dev);
skb->dev = bp->dev; /* pass up device pointer */
netif_rx(skb);
bp->dev->last_rx = jiffies;
HWM_RX_CHECK(smc, RX_LOW_WATERMARK);
return;
RequeueRxd:
PRINTK(KERN_INFO "Rx: re-queue RXD.\n");
mac_drv_requeue_rxd(smc, rxd, frag_count);
smc->os.MacStat.gen.rx_errors++; // Count receive packets
// not indicated.
} // mac_drv_rx_complete
/************************
*
* mac_drv_requeue_rxd
*
* The hardware module calls this function to request the OS-specific
* module to queue the receive buffer(s) represented by the pointer
* to the RxD and the frag_count into the receive queue again. This
* buffer was filled with an invalid frame or an SMT frame.
* Args
* smc - A pointer to the SMT context struct.
*
* rxd - A pointer to the first RxD which is used by the receive frame.
*
* frag_count - Count of RxDs used by the received frame.
* Out
* Nothing.
*
************************/
void mac_drv_requeue_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd,
int frag_count)
{
volatile struct s_smt_fp_rxd *next_rxd;
volatile struct s_smt_fp_rxd *src_rxd;
struct sk_buff *skb;
int MaxFrameSize;
unsigned char *v_addr;
dma_addr_t b_addr;
if (frag_count != 1) // This is not allowed to happen.
printk("fddi: Multi-fragment requeue!\n");
MaxFrameSize = smc->os.MaxFrameSize;
src_rxd = rxd;
for (; frag_count > 0; frag_count--) {
next_rxd = src_rxd->rxd_next;
rxd = HWM_GET_CURR_RXD(smc);
skb = src_rxd->rxd_os.skb;
if (skb == NULL) { // this should not happen
PRINTK("Requeue with no skb in rxd!\n");
skb = alloc_skb(MaxFrameSize + 3, GFP_ATOMIC);
if (skb) {
// we got a skb
rxd->rxd_os.skb = skb;
skb_reserve(skb, 3);
skb_put(skb, MaxFrameSize);
v_addr = skb->data;
b_addr = pci_map_single(&smc->os.pdev,
v_addr,
MaxFrameSize,
PCI_DMA_FROMDEVICE);
rxd->rxd_os.dma_addr = b_addr;
} else {
// no skb available, use local buffer
PRINTK("Queueing invalid buffer!\n");
rxd->rxd_os.skb = NULL;
v_addr = smc->os.LocalRxBuffer;
b_addr = smc->os.LocalRxBufferDMA;
}
} else {
// we use skb from old rxd
rxd->rxd_os.skb = skb;
v_addr = skb->data;
b_addr = pci_map_single(&smc->os.pdev,
v_addr,
MaxFrameSize,
PCI_DMA_FROMDEVICE);
rxd->rxd_os.dma_addr = b_addr;
}
hwm_rx_frag(smc, v_addr, b_addr, MaxFrameSize,
FIRST_FRAG | LAST_FRAG);
src_rxd = next_rxd;
}
} // mac_drv_requeue_rxd
/************************
*
* mac_drv_fill_rxd
*
* The hardware module calls this function at initialization time
* to fill the RxD ring with receive buffers. It is also called by
* mac_drv_rx_complete if rx_free is large enough to queue some new
* receive buffers into the RxD ring. mac_drv_fill_rxd queues new
* receive buffers as long as enough RxDs and receive buffers are
* available.
* Args
* smc - A pointer to the SMT context struct.
* Out
* Nothing.
*
************************/
void mac_drv_fill_rxd(struct s_smc *smc)
{
int MaxFrameSize;
unsigned char *v_addr;
unsigned long b_addr;
struct sk_buff *skb;
volatile struct s_smt_fp_rxd *rxd;
PRINTK(KERN_INFO "entering mac_drv_fill_rxd\n");
// Walk through the list of free receive buffers, passing receive
// buffers to the HWM as long as RXDs are available.
MaxFrameSize = smc->os.MaxFrameSize;
// Check if there is any RXD left.
while (HWM_GET_RX_FREE(smc) > 0) {
PRINTK(KERN_INFO ".\n");
rxd = HWM_GET_CURR_RXD(smc);
skb = alloc_skb(MaxFrameSize + 3, GFP_ATOMIC);
if (skb) {
// we got a skb
skb_reserve(skb, 3);
skb_put(skb, MaxFrameSize);
v_addr = skb->data;
b_addr = pci_map_single(&smc->os.pdev,
v_addr,
MaxFrameSize,
PCI_DMA_FROMDEVICE);
rxd->rxd_os.dma_addr = b_addr;
} else {
// no skb available, use local buffer
// System has run out of buffer memory, but we want to
// keep the receiver running in hope of better times.
// Multiple descriptors may point to this local buffer,
// so data in it must be considered invalid.
PRINTK("Queueing invalid buffer!\n");
v_addr = smc->os.LocalRxBuffer;
b_addr = smc->os.LocalRxBufferDMA;
}
rxd->rxd_os.skb = skb;
// Pass receive buffer to HWM.
hwm_rx_frag(smc, v_addr, b_addr, MaxFrameSize,
FIRST_FRAG | LAST_FRAG);
}
PRINTK(KERN_INFO "leaving mac_drv_fill_rxd\n");
} // mac_drv_fill_rxd
/************************
*
* mac_drv_clear_rxd
*
* The hardware module calls this function to release unused
* receive buffers.
* Args
* smc - A pointer to the SMT context struct.
*
* rxd - A pointer to the first RxD which is used by the receive buffer.
*
* frag_count - Count of RxDs used by the receive buffer.
* Out
* Nothing.
*
************************/
void mac_drv_clear_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd,
int frag_count)
{
struct sk_buff *skb;
PRINTK("entering mac_drv_clear_rxd\n");
if (frag_count != 1) // This is not allowed to happen.
printk("fddi: Multi-fragment clear!\n");
for (; frag_count > 0; frag_count--) {
skb = rxd->rxd_os.skb;
if (skb != NULL) {
skfddi_priv *bp = &smc->os;
int MaxFrameSize = bp->MaxFrameSize;
pci_unmap_single(&bp->pdev, rxd->rxd_os.dma_addr,
MaxFrameSize, PCI_DMA_FROMDEVICE);
dev_kfree_skb(skb);
rxd->rxd_os.skb = NULL;
}
rxd = rxd->rxd_next; // Next RXD.
}
} // mac_drv_clear_rxd
/************************
*
* mac_drv_rx_init
*
* The hardware module calls this routine when an SMT or NSA frame of the
* local SMT should be delivered to the LLC layer.
*
* It is necessary to have this function, because there is no other way to
* copy the contents of SMT MBufs into receive buffers.
*
* mac_drv_rx_init allocates the required target memory for this frame,
* and receives the frame fragment by fragment by calling mac_drv_rx_frag.
* Args
* smc - A pointer to the SMT context struct.
*
* len - The length (in bytes) of the received frame (FC, DA, SA, Data).
*
* fc - The Frame Control field of the received frame.
*
* look_ahead - A pointer to the lookahead data buffer (may be NULL).
*
* la_len - The length of the lookahead data stored in the lookahead
* buffer (may be zero).
* Out
* Always returns zero (0).
*
************************/
int mac_drv_rx_init(struct s_smc *smc, int len, int fc,
char *look_ahead, int la_len)
{
struct sk_buff *skb;
PRINTK("entering mac_drv_rx_init(len=%d)\n", len);
// "Received" a SMT or NSA frame of the local SMT.
if (len != la_len || len < FDDI_MAC_HDR_LEN || !look_ahead) {
PRINTK("fddi: Discard invalid local SMT frame\n");
PRINTK(" len=%d, la_len=%d, (ULONG) look_ahead=%08lXh.\n",
len, la_len, (unsigned long) look_ahead);
return (0);
}
skb = alloc_skb(len + 3, GFP_ATOMIC);
if (!skb) {
PRINTK("fddi: Local SMT: skb memory exhausted.\n");
return (0);
}
skb_reserve(skb, 3);
skb_put(skb, len);
memcpy(skb->data, look_ahead, len);
// deliver frame to system
skb->protocol = fddi_type_trans(skb, smc->os.dev);
skb->dev->last_rx = jiffies;
netif_rx(skb);
return (0);
} // mac_drv_rx_init
/************************
*
* smt_timer_poll
*
* This routine is called periodically by the SMT module to clean up the
* driver.
*
* Return any queued frames back to the upper protocol layers if the ring
* is down.
* Args
* smc - A pointer to the SMT context struct.
* Out
* Nothing.
*
************************/
void smt_timer_poll(struct s_smc *smc)
{
} // smt_timer_poll
/************************
*
* ring_status_indication
*
* This function indicates a change of the ring state.
* Args
* smc - A pointer to the SMT context struct.
*
* status - The current ring status.
* Out
* Nothing.
*
************************/
void ring_status_indication(struct s_smc *smc, u_long status)
{
PRINTK("ring_status_indication( ");
if (status & RS_RES15)
PRINTK("RS_RES15 ");
if (status & RS_HARDERROR)
PRINTK("RS_HARDERROR ");
if (status & RS_SOFTERROR)
PRINTK("RS_SOFTERROR ");
if (status & RS_BEACON)
PRINTK("RS_BEACON ");
if (status & RS_PATHTEST)
PRINTK("RS_PATHTEST ");
if (status & RS_SELFTEST)
PRINTK("RS_SELFTEST ");
if (status & RS_RES9)
PRINTK("RS_RES9 ");
if (status & RS_DISCONNECT)
PRINTK("RS_DISCONNECT ");
if (status & RS_RES7)
PRINTK("RS_RES7 ");
if (status & RS_DUPADDR)
PRINTK("RS_DUPADDR ");
if (status & RS_NORINGOP)
PRINTK("RS_NORINGOP ");
if (status & RS_VERSION)
PRINTK("RS_VERSION ");
if (status & RS_STUCKBYPASSS)
PRINTK("RS_STUCKBYPASSS ");
if (status & RS_EVENT)
PRINTK("RS_EVENT ");
if (status & RS_RINGOPCHANGE)
PRINTK("RS_RINGOPCHANGE ");
if (status & RS_RES0)
PRINTK("RS_RES0 ");
PRINTK("]\n");
} // ring_status_indication
/************************
*
* smt_get_time
*
* Gets the current time from the system.
* Args
* None.
* Out
* The current time in TICKS_PER_SECOND.
*
* TICKS_PER_SECOND has the unit 'count of timer ticks per second'. It is
* defined in "targetos.h". The definition of TICKS_PER_SECOND must comply
* to the time returned by smt_get_time().
*
************************/
unsigned long smt_get_time(void)
{
return jiffies;
} // smt_get_time
/************************
*
* smt_stat_counter
*
* Status counter update (ring_op, fifo full).
* Args
* smc - A pointer to the SMT context struct.
*
* stat - = 0: A ring operational change occurred.
* = 1: The FORMAC FIFO buffer is full / FIFO overflow.
* Out
* Nothing.
*
************************/
void smt_stat_counter(struct s_smc *smc, int stat)
{
// BOOLEAN RingIsUp ;
PRINTK(KERN_INFO "smt_stat_counter\n");
switch (stat) {
case 0:
PRINTK(KERN_INFO "Ring operational change.\n");
break;
case 1:
PRINTK(KERN_INFO "Receive fifo overflow.\n");
smc->os.MacStat.gen.rx_errors++;
break;
default:
PRINTK(KERN_INFO "Unknown status (%d).\n", stat);
break;
}
} // smt_stat_counter
/************************
*
* cfm_state_change
*
* Sets CFM state in custom statistics.
* Args
* smc - A pointer to the SMT context struct.
*
* c_state - Possible values are:
*
* EC0_OUT, EC1_IN, EC2_TRACE, EC3_LEAVE, EC4_PATH_TEST,
* EC5_INSERT, EC6_CHECK, EC7_DEINSERT
* Out
* Nothing.
*
************************/
void cfm_state_change(struct s_smc *smc, int c_state)
{
#ifdef DRIVERDEBUG
char *s;
switch (c_state) {
case SC0_ISOLATED:
s = "SC0_ISOLATED";
break;
case SC1_WRAP_A:
s = "SC1_WRAP_A";
break;
case SC2_WRAP_B:
s = "SC2_WRAP_B";
break;
case SC4_THRU_A:
s = "SC4_THRU_A";
break;
case SC5_THRU_B:
s = "SC5_THRU_B";
break;
case SC7_WRAP_S:
s = "SC7_WRAP_S";
break;
case SC9_C_WRAP_A:
s = "SC9_C_WRAP_A";
break;
case SC10_C_WRAP_B:
s = "SC10_C_WRAP_B";
break;
case SC11_C_WRAP_S:
s = "SC11_C_WRAP_S";
break;
default:
PRINTK(KERN_INFO "cfm_state_change: unknown %d\n", c_state);
return;
}
PRINTK(KERN_INFO "cfm_state_change: %s\n", s);
#endif // DRIVERDEBUG
} // cfm_state_change
/************************
*
* ecm_state_change
*
* Sets ECM state in custom statistics.
* Args
* smc - A pointer to the SMT context struct.
*
* e_state - Possible values are:
*
* SC0_ISOLATED, SC1_WRAP_A (5), SC2_WRAP_B (6), SC4_THRU_A (12),
* SC5_THRU_B (7), SC7_WRAP_S (8)
* Out
* Nothing.
*
************************/
void ecm_state_change(struct s_smc *smc, int e_state)
{
#ifdef DRIVERDEBUG
char *s;
switch (e_state) {
case EC0_OUT:
s = "EC0_OUT";
break;
case EC1_IN:
s = "EC1_IN";
break;
case EC2_TRACE:
s = "EC2_TRACE";
break;
case EC3_LEAVE:
s = "EC3_LEAVE";
break;
case EC4_PATH_TEST:
s = "EC4_PATH_TEST";
break;
case EC5_INSERT:
s = "EC5_INSERT";
break;
case EC6_CHECK:
s = "EC6_CHECK";
break;
case EC7_DEINSERT:
s = "EC7_DEINSERT";
break;
default:
s = "unknown";
break;
}
PRINTK(KERN_INFO "ecm_state_change: %s\n", s);
#endif //DRIVERDEBUG
} // ecm_state_change
/************************
*
* rmt_state_change
*
* Sets RMT state in custom statistics.
* Args
* smc - A pointer to the SMT context struct.
*
* r_state - Possible values are:
*
* RM0_ISOLATED, RM1_NON_OP, RM2_RING_OP, RM3_DETECT,
* RM4_NON_OP_DUP, RM5_RING_OP_DUP, RM6_DIRECTED, RM7_TRACE
* Out
* Nothing.
*
************************/
void rmt_state_change(struct s_smc *smc, int r_state)
{
#ifdef DRIVERDEBUG
char *s;
switch (r_state) {
case RM0_ISOLATED:
s = "RM0_ISOLATED";
break;
case RM1_NON_OP:
s = "RM1_NON_OP - not operational";
break;
case RM2_RING_OP:
s = "RM2_RING_OP - ring operational";
break;
case RM3_DETECT:
s = "RM3_DETECT - detect dupl addresses";
break;
case RM4_NON_OP_DUP:
s = "RM4_NON_OP_DUP - dupl. addr detected";
break;
case RM5_RING_OP_DUP:
s = "RM5_RING_OP_DUP - ring oper. with dupl. addr";
break;
case RM6_DIRECTED:
s = "RM6_DIRECTED - sending directed beacons";
break;
case RM7_TRACE:
s = "RM7_TRACE - trace initiated";
break;
default:
s = "unknown";
break;
}
PRINTK(KERN_INFO "[rmt_state_change: %s]\n", s);
#endif // DRIVERDEBUG
} // rmt_state_change
/************************
*
* drv_reset_indication
*
* This function is called by the SMT when it has detected a severe
* hardware problem. The driver should perform a reset on the adapter
* as soon as possible, but not from within this function.
* Args
* smc - A pointer to the SMT context struct.
* Out
* Nothing.
*
************************/
void drv_reset_indication(struct s_smc *smc)
{
PRINTK(KERN_INFO "entering drv_reset_indication\n");
smc->os.ResetRequested = TRUE; // Set flag.
} // drv_reset_indication
static struct pci_driver skfddi_pci_driver = {
.name = "skfddi",
.id_table = skfddi_pci_tbl,
.probe = skfp_init_one,
.remove = __devexit_p(skfp_remove_one),
};
static int __init skfd_init(void)
{
return pci_register_driver(&skfddi_pci_driver);
}
static void __exit skfd_exit(void)
{
pci_unregister_driver(&skfddi_pci_driver);
}
module_init(skfd_init);
module_exit(skfd_exit);
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