/* version and credits */
#ifndef PCMCIA
-static char version[] __initdata =
+static char version[] __devinitdata =
"\nibmtr.c: v1.3.57 8/ 7/94 Peter De Schrijver and Mark Swanson\n"
" v2.1.125 10/20/98 Paul Norton <pnorton@ieee.org>\n"
" v2.2.0 12/30/98 Joel Sloan <jjs@c-me.com>\n"
/* this allows displaying full adapter information */
-char *channel_def[] __devinitdata = { "ISA", "MCA", "ISA P&P" };
+static char *channel_def[] __devinitdata = { "ISA", "MCA", "ISA P&P" };
static char pcchannelid[] __devinitdata = {
0x05, 0x00, 0x04, 0x09,
0x03, 0x08, 0x02, 0x00
};
-char __devinit *adapter_def(char type)
+static char __devinit *adapter_def(char type)
{
switch (type) {
case 0xF: return "PC Adapter | PC Adapter II | Adapter/A";
#define TRC_INIT 0x01 /* Trace initialization & PROBEs */
#define TRC_INITV 0x02 /* verbose init trace points */
-unsigned char ibmtr_debug_trace = 0;
+static unsigned char ibmtr_debug_trace = 0;
static int ibmtr_probe(struct net_device *dev);
static int ibmtr_probe1(struct net_device *dev, int ioaddr);
static int trdev_init(struct net_device *dev);
static int tok_open(struct net_device *dev);
static int tok_init_card(struct net_device *dev);
-void tok_open_adapter(unsigned long dev_addr);
+static void tok_open_adapter(unsigned long dev_addr);
static void open_sap(unsigned char type, struct net_device *dev);
static void tok_set_multicast_list(struct net_device *dev);
static int tok_send_packet(struct sk_buff *skb, struct net_device *dev);
static int tok_close(struct net_device *dev);
-irqreturn_t tok_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static irqreturn_t tok_interrupt(int irq, void *dev_id, struct pt_regs *regs);
static void initial_tok_int(struct net_device *dev);
static void tr_tx(struct net_device *dev);
static void tr_rx(struct net_device *dev);
-void ibmtr_reset_timer(struct timer_list*tmr,struct net_device *dev);
+static void ibmtr_reset_timer(struct timer_list*tmr,struct net_device *dev);
static void tok_rerun(unsigned long dev_addr);
-void ibmtr_readlog(struct net_device *dev);
+static void ibmtr_readlog(struct net_device *dev);
static struct net_device_stats *tok_get_stats(struct net_device *dev);
-int ibmtr_change_mtu(struct net_device *dev, int mtu);
+static int ibmtr_change_mtu(struct net_device *dev, int mtu);
static void find_turbo_adapters(int *iolist);
static int ibmtr_portlist[IBMTR_MAX_ADAPTERS+1] __devinitdata = {
static int __devinitdata turbo_searched = 0;
#ifndef PCMCIA
-static __u32 ibmtr_mem_base __initdata = 0xd0000;
+static __u32 ibmtr_mem_base __devinitdata = 0xd0000;
#endif
static void __devinit PrtChanID(char *pcid, short stride)
printk("\n");
}
-static void __devinit HWPrtChanID(void * pcid, short stride)
+static void __devinit HWPrtChanID(void __iomem *pcid, short stride)
{
short i, j;
for (i = 0, j = 0; i < 24; i++, j += stride)
* going away.
*/
-static void __devinit find_turbo_adapters(int *iolist) {
+static void __devinit find_turbo_adapters(int *iolist)
+{
int ram_addr;
int index=0;
- void *chanid;
+ void __iomem *chanid;
int found_turbo=0;
unsigned char *tchanid, ctemp;
int i, j;
unsigned long jif;
- void *ram_mapped ;
+ void __iomem *ram_mapped ;
if (turbo_searched == 1) return;
turbo_searched=1;
if (dev->base_addr) {
outb(0,dev->base_addr+ADAPTRESET);
- schedule_timeout(TR_RST_TIME); /* wait 50ms */
+ schedule_timeout_uninterruptible(TR_RST_TIME); /* wait 50ms */
outb(0,dev->base_addr+ADAPTRESETREL);
}
{
struct tok_info *ti = (struct tok_info *) dev->priv;
- iounmap((u32 *)ti->mmio);
- iounmap((u32 *)ti->sram_virt);
+ iounmap(ti->mmio);
+ iounmap(ti->sram_virt);
}
#endif
}
{
unsigned char segment, intr=0, irq=0, i, j, cardpresent=NOTOK, temp=0;
- void * t_mmio = NULL;
+ void __iomem * t_mmio = NULL;
struct tok_info *ti = dev->priv;
- void *cd_chanid;
+ void __iomem *cd_chanid;
unsigned char *tchanid, ctemp;
#ifndef PCMCIA
unsigned char t_irq=0;
*/
#ifdef PCMCIA
iounmap(t_mmio);
- t_mmio = (void *)ti->mmio; /*BMS to get virtual address */
+ t_mmio = ti->mmio; /*BMS to get virtual address */
irq = ti->irq; /*BMS to display the irq! */
#endif
cd_chanid = (CHANNEL_ID + t_mmio); /* for efficiency */
if (intr == 3) irq = 11;
ti->global_int_enable = 0;
ti->adapter_int_enable = 0;
- ti->sram_virt=(__u32)(inb(PIOaddr+ADAPTRESETREL) & 0xfe) << 12;
+ ti->sram_phys=(__u32)(inb(PIOaddr+ADAPTRESETREL) & 0xfe) << 12;
break;
case TR_ISAPNP:
if (!t_irq) {
if (!time_after(jiffies, timeout)) continue;
DPRINTK( "Hardware timeout during initialization.\n");
iounmap(t_mmio);
- kfree(ti);
return -ENODEV;
}
- ti->sram_virt =
+ ti->sram_phys =
((__u32)readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_EVEN)<<12);
ti->adapter_int_enable = PIOaddr + ADAPTINTREL;
break;
if (ibmtr_debug_trace & TRC_INIT) { /* just report int */
DPRINTK("irq=%d", irq);
- printk(", sram_virt=0x%x", ti->sram_virt);
+ printk(", sram_phys=0x%x", ti->sram_phys);
if(ibmtr_debug_trace&TRC_INITV){ /* full chat in verbose only */
DPRINTK(", ti->mmio=%p", ti->mmio);
printk(", segment=%02X", segment);
DPRINTK("Unknown shared ram paging info %01X\n",
ti->shared_ram_paging);
iounmap(t_mmio);
- kfree(ti);
return -ENODEV;
break;
} /*end switch shared_ram_paging */
"driver limit (%05x), adapter not started.\n",
chk_base, ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE);
iounmap(t_mmio);
- kfree(ti);
return -ENODEV;
} else { /* seems cool, record what we have figured out */
ti->sram_base = new_base >> 12;
ibmtr_mem_base = chk_base;
}
}
- else ti->sram_base = ti->sram_virt >> 12;
+ else ti->sram_base = ti->sram_phys >> 12;
/* The PCMCIA has already got the interrupt line and the io port,
so no chance of anybody else getting it - MLP */
DPRINTK("Could not grab irq %d. Halting Token Ring driver.\n",
irq);
iounmap(t_mmio);
- kfree(ti);
return -ENODEV;
}
/*?? Now, allocate some of the PIO PORTs for this driver.. */
DPRINTK("Could not grab PIO range. Halting driver.\n");
free_irq(dev->irq, dev);
iounmap(t_mmio);
- kfree(ti);
return -EBUSY;
}
struct tok_info *ti;
short PIOaddr;
unsigned long i;
+ wait_queue_t __wait;
+ init_waitqueue_entry(&__wait, current);
PIOaddr = dev->base_addr;
ti = (struct tok_info *) dev->priv;
writeb(~INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
outb(0, PIOaddr + ADAPTRESET);
- current->state=TASK_UNINTERRUPTIBLE;
- schedule_timeout(TR_RST_TIME); /* wait 50ms */
+ schedule_timeout_uninterruptible(TR_RST_TIME); /* wait 50ms */
+ add_wait_queue(&ti->wait_for_reset, &__wait);
+ set_current_state(TASK_UNINTERRUPTIBLE);
outb(0, PIOaddr + ADAPTRESETREL);
#ifdef ENABLE_PAGING
if (ti->page_mask)
writeb(SRPR_ENABLE_PAGING,ti->mmio+ACA_OFFSET+ACA_RW+SRPR_EVEN);
#endif
writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
- i = sleep_on_timeout(&ti->wait_for_reset, 4 * HZ);
+ #warning pci posting bug
+ i = schedule_timeout(4 * HZ);
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&ti->wait_for_reset, &__wait);
return i? 0 : -EAGAIN;
}
ti->sap_status = CLOSED; /* CLOSED or OPEN */
ti->open_failure = NO; /* NO or YES */
ti->open_mode = MANUAL; /* MANUAL or AUTOMATIC */
- /* 12/2000 not typical Linux, but we can use RUNNING to let us know when
- the network has crapped out or cables are disconnected. Useful because
- the IFF_UP flag stays up the whole time, until ifconfig tr0 down.
- */
- dev->flags &= ~IFF_RUNNING;
- ti->sram_virt &= ~1; /* to reverse what we do in tok_close */
+ ti->sram_phys &= ~1; /* to reverse what we do in tok_close */
/* init the spinlock */
- ti->lock = (spinlock_t) SPIN_LOCK_UNLOCKED;
+ spin_lock_init(&ti->lock);
init_timer(&ti->tr_timer);
i = tok_init_card(dev);
DPRINTK("Adapter is up and running\n");
return 0;
}
- current->state=TASK_INTERRUPTIBLE;
- i=schedule_timeout(TR_RETRY_INTERVAL); /* wait 30 seconds */
+ i=schedule_timeout_interruptible(TR_RETRY_INTERVAL);
+ /* wait 30 seconds */
if(i!=0) break; /*prob. a signal, like the i>24*HZ case above */
}
outb(0, dev->base_addr + ADAPTRESET);/* kill pending interrupts*/
#define DLC_MAX_SAP_OFST 32
#define DLC_MAX_STA_OFST 33
-void tok_open_adapter(unsigned long dev_addr)
+static void tok_open_adapter(unsigned long dev_addr)
{
struct net_device *dev = (struct net_device *) dev_addr;
struct tok_info *ti;
/* unloading the module from memory, and then if a timer pops, ouch */
del_timer_sync(&ti->tr_timer);
outb(0, dev->base_addr + ADAPTRESET);
- ti->sram_virt |= 1;
+ ti->sram_phys |= 1;
ti->open_status = CLOSED;
netif_stop_queue(dev);
"IMPL force received","Duplicate modifier",
"No monitor detected","Monitor contention failed for RPL"};
-void dir_open_adapter (struct net_device *dev) {
+static void __iomem *map_address(struct tok_info *ti, unsigned index, __u8 *page)
+{
+ if (ti->page_mask) {
+ *page = (index >> 8) & ti->page_mask;
+ index &= ~(ti->page_mask << 8);
+ }
+ return ti->sram_virt + index;
+}
+static void dir_open_adapter (struct net_device *dev)
+{
struct tok_info *ti = (struct tok_info *) dev->priv;
unsigned char ret_code;
__u16 err;
- ti->srb = ntohs(readw(ti->init_srb + SRB_ADDRESS_OFST));
- ti->ssb = ntohs(readw(ti->init_srb + SSB_ADDRESS_OFST));
- ti->arb = ntohs(readw(ti->init_srb + ARB_ADDRESS_OFST));
- ti->asb = ntohs(readw(ti->init_srb + ASB_ADDRESS_OFST));
- if (ti->page_mask) {
- ti->srb_page = (ti->srb >> 8) & ti->page_mask;
- ti->srb &= ~(ti->page_mask << 8);
- ti->ssb_page = (ti->ssb >> 8) & ti->page_mask;
- ti->ssb &= ~(ti->page_mask << 8);
- ti->arb_page = (ti->arb >> 8) & ti->page_mask;
- ti->arb &= ~(ti->page_mask << 8);
- ti->asb_page = (ti->asb >> 8) & ti->page_mask;
- ti->asb &= ~(ti->page_mask << 8);
- }
- ti->srb += ti->sram_virt;
- ti->ssb += ti->sram_virt;
- ti->arb += ti->sram_virt;
- ti->asb += ti->sram_virt;
+ ti->srb = map_address(ti,
+ ntohs(readw(ti->init_srb + SRB_ADDRESS_OFST)),
+ &ti->srb_page);
+ ti->ssb = map_address(ti,
+ ntohs(readw(ti->init_srb + SSB_ADDRESS_OFST)),
+ &ti->ssb_page);
+ ti->arb = map_address(ti,
+ ntohs(readw(ti->init_srb + ARB_ADDRESS_OFST)),
+ &ti->arb_page);
+ ti->asb = map_address(ti,
+ ntohs(readw(ti->init_srb + ASB_ADDRESS_OFST)),
+ &ti->asb_page);
ti->current_skb = NULL;
ret_code = readb(ti->init_srb + RETCODE_OFST);
err = ntohs(readw(ti->init_srb + OPEN_ERROR_CODE_OFST));
/******************************************************************************/
-irqreturn_t tok_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t tok_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
unsigned char status;
/* unsigned char status_even ; */
DPRINTK("Int from tok_driver, dev : %p irq%d regs=%p\n", dev,irq,regs);
#endif
ti = (struct tok_info *) dev->priv;
- if (ti->sram_virt & 1)
+ if (ti->sram_phys & 1)
return IRQ_NONE; /* PCMCIA card extraction flag */
spin_lock(&(ti->lock));
#ifdef ENABLE_PAGING
if (status & ADAP_CHK_INT) {
int i;
- __u32 check_reason;
+ void __iomem *check_reason;
__u8 check_reason_page = 0;
- check_reason =
- ntohs(readw(ti->mmio+ ACA_OFFSET+ACA_RW + WWCR_EVEN));
- if (ti->page_mask) {
- check_reason_page = (check_reason >> 8) & ti->page_mask;
- check_reason &= ~(ti->page_mask << 8);
- }
- check_reason += ti->sram_virt;
+ check_reason = map_address(ti,
+ ntohs(readw(ti->mmio+ ACA_OFFSET+ACA_RW + WWCR_EVEN)),
+ &check_reason_page);
SET_PAGE(check_reason_page);
DPRINTK("Adapter check interrupt\n");
ti->open_status = CLOSED;
ti->sap_status = CLOSED;
ti->open_mode = AUTOMATIC;
- dev->flags &= ~IFF_RUNNING;
+ netif_carrier_off(dev);
netif_stop_queue(dev);
ti->open_action = RESTART;
outb(0, dev->base_addr + ADAPTRESET);
break;
}
netif_wake_queue(dev);
- dev->flags |= IFF_RUNNING;/*BMS 12/2000*/
+ netif_carrier_on(dev);
break;
case DIR_INTERRUPT:
case DIR_MOD_OPEN_PARAMS:
ring_status);
if(ring_status& (REMOVE_RECV|AUTO_REMOVAL|LOBE_FAULT)){
netif_stop_queue(dev);
- dev->flags &= ~IFF_RUNNING;/*not typical Linux*/
+ netif_carrier_off(dev);
DPRINTK("Remove received, or Auto-removal error"
", or Lobe fault\n");
DPRINTK("We'll try to reopen the closed adapter"
/* we assign the shared-ram address for ISA devices */
writeb(ti->sram_base, ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN);
#ifndef PCMCIA
- ti->sram_virt = (u32)ioremap(((__u32)ti->sram_base << 12), ti->avail_shared_ram);
+ ti->sram_virt = ioremap(((__u32)ti->sram_base << 12), ti->avail_shared_ram);
#endif
- ti->init_srb = ntohs(readw(ti->mmio + ACA_OFFSET + WRBR_EVEN));
- if (ti->page_mask) {
- ti->init_srb_page = (ti->init_srb >> 8) & ti->page_mask;
- ti->init_srb &= ~(ti->page_mask << 8);
- }
- ti->init_srb += ti->sram_virt;
+ ti->init_srb = map_address(ti,
+ ntohs(readw(ti->mmio + ACA_OFFSET + WRBR_EVEN)),
+ &ti->init_srb_page);
if (ti->page_mask && ti->avail_shared_ram == 127) {
- int last_512 = 0xfe00, i;
- int last_512_page=0;
- last_512_page=(last_512>>8)&ti->page_mask;
- last_512 &= ~(ti->page_mask << 8);
+ void __iomem *last_512;
+ __u8 last_512_page=0;
+ int i;
+ last_512 = map_address(ti, 0xfe00, &last_512_page);
/* initialize high section of ram (if necessary) */
SET_PAGE(last_512_page);
for (i = 0; i < 512; i++)
- writeb(0, ti->sram_virt + last_512 + i);
+ writeb(0, last_512 + i);
}
SET_PAGE(ti->init_srb_page);
int i;
DPRINTK("ti->init_srb_page=0x%x\n", ti->init_srb_page);
- DPRINTK("init_srb(%x):", (ti->init_srb) );
+ DPRINTK("init_srb(%p):", ti->init_srb );
for (i = 0; i < 20; i++)
printk("%02X ", (int) readb(ti->init_srb + i));
printk("\n");
struct trh_hdr *trhdr = (struct trh_hdr *) ti->current_skb->data;
unsigned int hdr_len;
__u32 dhb=0,dhb_base;
+ void __iomem *dhbuf = NULL;
unsigned char xmit_command;
int i,dhb_len=0x4000,src_len,src_offset;
struct trllc *llc;
dhb_page = (dhb_base >> 8) & ti->page_mask;
dhb=dhb_base & ~(ti->page_mask << 8);
}
- dhb += ti->sram_virt;
+ dhbuf = ti->sram_virt + dhb;
/* Figure out the size of the 802.5 header */
if (!(trhdr->saddr[0] & 0x80)) /* RIF present? */
writew(htons(0x11), ti->asb + FRAME_LENGTH_OFST);
writeb(0x0e, ti->asb + HEADER_LENGTH_OFST);
SET_PAGE(dhb_page);
- writeb(AC, dhb);
- writeb(LLC_FRAME, dhb + 1);
+ writeb(AC, dhbuf);
+ writeb(LLC_FRAME, dhbuf + 1);
for (i = 0; i < TR_ALEN; i++)
- writeb((int) 0x0FF, dhb + i + 2);
+ writeb((int) 0x0FF, dhbuf + i + 2);
for (i = 0; i < TR_ALEN; i++)
- writeb(0, dhb + i + TR_ALEN + 2);
+ writeb(0, dhbuf + i + TR_ALEN + 2);
writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
return;
}
dhb=dhb & ~(ti->page_mask << 8);
dhb_len=0x4000-dhb; /* remaining size of this page */
}
- dhb+=ti->sram_virt;
+ dhbuf = ti->sram_virt + dhb;
SET_PAGE(dhb_page);
if (src_len > dhb_len) {
- memcpy_toio(dhb,&ti->current_skb->data[src_offset],
+ memcpy_toio(dhbuf,&ti->current_skb->data[src_offset],
dhb_len);
src_len -= dhb_len;
src_offset += dhb_len;
dhb=dhb_base;
continue;
}
- memcpy_toio(dhb, &ti->current_skb->data[src_offset], src_len);
+ memcpy_toio(dhbuf, &ti->current_skb->data[src_offset], src_len);
break;
}
writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
static void tr_rx(struct net_device *dev)
{
struct tok_info *ti = (struct tok_info *) dev->priv;
- __u32 rbuffer, rbufdata;
+ __u32 rbuffer;
+ void __iomem *rbuf, *rbufdata, *llc;
__u8 rbuffer_page = 0;
- __u32 llc;
unsigned char *data;
unsigned int rbuffer_len, lan_hdr_len, hdr_len, ip_len, length;
unsigned char dlc_hdr_len;
SET_PAGE(ti->arb_page);
memcpy_fromio(&rarb, ti->arb, sizeof(rarb));
rbuffer = ntohs(rarb.rec_buf_addr) ;
- if (ti->page_mask) {
- rbuffer_page = (rbuffer >> 8) & ti->page_mask;
- rbuffer &= ~(ti->page_mask << 8);
- }
- rbuffer += ti->sram_virt;
+ rbuf = map_address(ti, rbuffer, &rbuffer_page);
SET_PAGE(ti->asb_page);
hdr_len = lan_hdr_len + sizeof(struct trllc) + sizeof(struct iphdr);
SET_PAGE(rbuffer_page);
- llc = (rbuffer + offsetof(struct rec_buf, data) + lan_hdr_len);
+ llc = rbuf + offsetof(struct rec_buf, data) + lan_hdr_len;
#if TR_VERBOSE
DPRINTK("offsetof data: %02X lan_hdr_len: %02X\n",
if (!IPv4_p) {
- __u32 trhhdr;
-
- trhhdr = (rbuffer + offsetof(struct rec_buf, data));
+ void __iomem *trhhdr = rbuf + offsetof(struct rec_buf, data);
DPRINTK("Probably non-IP frame received.\n");
DPRINTK("ssap: %02X dsap: %02X "
skb_put(skb, length);
skb->dev = dev;
data = skb->data;
- rbuffer_len = ntohs(readw(rbuffer + offsetof(struct rec_buf, buf_len)));
- rbufdata = rbuffer + offsetof(struct rec_buf, data);
+ rbuffer_len = ntohs(readw(rbuf + offsetof(struct rec_buf, buf_len)));
+ rbufdata = rbuf + offsetof(struct rec_buf, data);
if (IPv4_p) {
/* Copy the headers without checksumming */
data,length<rbuffer_len?length:rbuffer_len,chksum);
else
memcpy_fromio(data, rbufdata, rbuffer_len);
- rbuffer = ntohs(readw(rbuffer+BUFFER_POINTER_OFST)) ;
+ rbuffer = ntohs(readw(rbuf+BUFFER_POINTER_OFST)) ;
if (!rbuffer)
break;
rbuffer -= 2;
length -= rbuffer_len;
data += rbuffer_len;
- if (ti->page_mask) {
- rbuffer_page = (rbuffer >> 8) & ti->page_mask;
- rbuffer &= ~(ti->page_mask << 8);
- }
- rbuffer += ti->sram_virt;
+ rbuf = map_address(ti, rbuffer, &rbuffer_page);
SET_PAGE(rbuffer_page);
- rbuffer_len = ntohs(readw(rbuffer + BUFFER_LENGTH_OFST));
- rbufdata = rbuffer + offsetof(struct rec_buf, data);
+ rbuffer_len = ntohs(readw(rbuf + BUFFER_LENGTH_OFST));
+ rbufdata = rbuf + offsetof(struct rec_buf, data);
}
SET_PAGE(ti->asb_page);
/*****************************************************************************/
-void ibmtr_reset_timer(struct timer_list *tmr, struct net_device *dev)
+static void ibmtr_reset_timer(struct timer_list *tmr, struct net_device *dev)
{
tmr->expires = jiffies + TR_RETRY_INTERVAL;
tmr->data = (unsigned long) dev;
/*****************************************************************************/
-void ibmtr_readlog(struct net_device *dev)
+static void ibmtr_readlog(struct net_device *dev)
{
struct tok_info *ti;
/*****************************************************************************/
-int ibmtr_change_mtu(struct net_device *dev, int mtu)
+static int ibmtr_change_mtu(struct net_device *dev, int mtu)
{
struct tok_info *ti = (struct tok_info *) dev->priv;
MODULE_LICENSE("GPL");
-MODULE_PARM(io, "1-" __MODULE_STRING(IBMTR_MAX_ADAPTERS) "i");
-MODULE_PARM(irq, "1-" __MODULE_STRING(IBMTR_MAX_ADAPTERS) "i");
-MODULE_PARM(mem, "1-" __MODULE_STRING(IBMTR_MAX_ADAPTERS) "i");
+module_param_array(io, int, NULL, 0);
+module_param_array(irq, int, NULL, 0);
+module_param_array(mem, int, NULL, 0);
static int __init ibmtr_init(void)
{
git://git.onelab.eu / linux-2.6.git / blobdiff