#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/poison.h>
+#include <linux/bitrev.h>
+#include <linux/mutex.h>
+#include <linux/firmware.h>
+#include <linux/ihex.h>
+#include <linux/slab.h>
#include <asm/atomic.h>
#include <asm/io.h>
*/
-/********** microcode **********/
-
-#ifdef AMB_NEW_MICROCODE
-#define UCODE(x) UCODE2(atmsar12.x)
-#else
-#define UCODE(x) UCODE2(atmsar11.x)
-#endif
-#define UCODE2(x) #x
-
-static u32 __devinitdata ucode_start =
-#include UCODE(start)
-;
-
-static region __devinitdata ucode_regions[] = {
-#include UCODE(regions)
- { 0, 0 }
-};
-
-static u32 __devinitdata ucode_data[] = {
-#include UCODE(data)
- 0xdeadbeef
-};
-
static void do_housekeeping (unsigned long arg);
/********** globals **********/
/* see limitations under Hardware Features */
-static inline int check_area (void * start, size_t length) {
+static int check_area (void * start, size_t length) {
// assumes length > 0
const u32 fourmegmask = -1 << 22;
const u32 twofivesixmask = -1 << 8;
/********** free an skb (as per ATM device driver documentation) **********/
-static inline void amb_kfree_skb (struct sk_buff * skb) {
+static void amb_kfree_skb (struct sk_buff * skb) {
if (ATM_SKB(skb)->vcc->pop) {
ATM_SKB(skb)->vcc->pop (ATM_SKB(skb)->vcc, skb);
} else {
/********** TX completion **********/
-static inline void tx_complete (amb_dev * dev, tx_out * tx) {
+static void tx_complete (amb_dev * dev, tx_out * tx) {
tx_simple * tx_descr = bus_to_virt (tx->handle);
struct sk_buff * skb = tx_descr->skb;
/********** TX queue pair **********/
-static inline int tx_give (amb_dev * dev, tx_in * tx) {
+static int tx_give (amb_dev * dev, tx_in * tx) {
amb_txq * txq = &dev->txq;
unsigned long flags;
}
}
-static inline int tx_take (amb_dev * dev) {
+static int tx_take (amb_dev * dev) {
amb_txq * txq = &dev->txq;
unsigned long flags;
/********** RX queue pairs **********/
-static inline int rx_give (amb_dev * dev, rx_in * rx, unsigned char pool) {
+static int rx_give (amb_dev * dev, rx_in * rx, unsigned char pool) {
amb_rxq * rxq = &dev->rxq[pool];
unsigned long flags;
}
}
-static inline int rx_take (amb_dev * dev, unsigned char pool) {
+static int rx_take (amb_dev * dev, unsigned char pool) {
amb_rxq * rxq = &dev->rxq[pool];
unsigned long flags;
/********** RX Pool handling **********/
/* pre: buffers_wanted = 0, post: pending = 0 */
-static inline void drain_rx_pool (amb_dev * dev, unsigned char pool) {
+static void drain_rx_pool (amb_dev * dev, unsigned char pool) {
amb_rxq * rxq = &dev->rxq[pool];
PRINTD (DBG_FLOW|DBG_POOL, "drain_rx_pool %p %hu", dev, pool);
drain_rx_pool (dev, pool);
}
-static inline void fill_rx_pool (amb_dev * dev, unsigned char pool,
+static void fill_rx_pool (amb_dev * dev, unsigned char pool,
gfp_t priority)
{
rx_in rx;
}
// cast needed as there is no %? for pointer differences
PRINTD (DBG_SKB, "allocated skb at %p, head %p, area %li",
- skb, skb->head, (long) (skb->end - skb->head));
+ skb, skb->head, (long) (skb_end_pointer(skb) - skb->head));
rx.handle = virt_to_bus (skb);
rx.host_address = cpu_to_be32 (virt_to_bus (skb->data));
if (rx_give (dev, &rx, pool))
/********** enable host interrupts **********/
-static inline void interrupts_on (amb_dev * dev) {
+static void interrupts_on (amb_dev * dev) {
wr_plain (dev, offsetof(amb_mem, interrupt_control),
rd_plain (dev, offsetof(amb_mem, interrupt_control))
| AMB_INTERRUPT_BITS);
/********** disable host interrupts **********/
-static inline void interrupts_off (amb_dev * dev) {
+static void interrupts_off (amb_dev * dev) {
wr_plain (dev, offsetof(amb_mem, interrupt_control),
rd_plain (dev, offsetof(amb_mem, interrupt_control))
&~ AMB_INTERRUPT_BITS);
/********** interrupt handling **********/
-static irqreturn_t interrupt_handler(int irq, void *dev_id,
- struct pt_regs *pt_regs) {
- amb_dev * dev = (amb_dev *) dev_id;
- (void) pt_regs;
+static irqreturn_t interrupt_handler(int irq, void *dev_id) {
+ amb_dev * dev = dev_id;
PRINTD (DBG_IRQ|DBG_FLOW, "interrupt_handler: %p", dev_id);
- if (!dev_id) {
- PRINTD (DBG_IRQ|DBG_ERR, "irq with NULL dev_id: %d", irq);
- return IRQ_NONE;
- }
-
{
u32 interrupt = rd_plain (dev, offsetof(amb_mem, interrupt));
}
case round_up: {
// check all bits that we are discarding
- if (man & (-1>>9)) {
+ if (man & (~0U>>9)) {
man = (man>>(32-9)) + 1;
if (man == (1<<9)) {
// no need to check for round up outside of range
struct atm_qos * qos;
struct atm_trafprm * txtp;
struct atm_trafprm * rxtp;
- u16 tx_rate_bits;
+ u16 tx_rate_bits = -1; // hush gcc
u16 tx_vc_bits = -1; // hush gcc
u16 tx_frame_bits = -1; // hush gcc
r = round_up;
}
error = make_rate (pcr, r, &tx_rate_bits, NULL);
+ if (error)
+ return error;
tx_vc_bits = TX_UBR_CAPPED;
tx_frame_bits = TX_FRAME_CAPPED;
}
vcc->tx_frame_bits = tx_frame_bits;
- down (&dev->vcc_sf);
+ mutex_lock(&dev->vcc_sf);
if (dev->rxer[vci]) {
// RXer on the channel already, just modify rate...
cmd.request = cpu_to_be32 (SRB_MODIFY_VC_RATE);
schedule();
}
dev->txer[vci].tx_present = 1;
- up (&dev->vcc_sf);
+ mutex_unlock(&dev->vcc_sf);
}
if (rxtp->traffic_class != ATM_NONE) {
vcc->rx_info.pool = pool;
- down (&dev->vcc_sf);
+ mutex_lock(&dev->vcc_sf);
/* grow RX buffer pool */
if (!dev->rxq[pool].buffers_wanted)
dev->rxq[pool].buffers_wanted = rx_lats;
schedule();
// this link allows RX frames through
dev->rxer[vci] = atm_vcc;
- up (&dev->vcc_sf);
+ mutex_unlock(&dev->vcc_sf);
}
// indicate readiness
if (atm_vcc->qos.txtp.traffic_class != ATM_NONE) {
command cmd;
- down (&dev->vcc_sf);
+ mutex_lock(&dev->vcc_sf);
if (dev->rxer[vci]) {
// RXer still on the channel, just modify rate... XXX not really needed
cmd.request = cpu_to_be32 (SRB_MODIFY_VC_RATE);
dev->txer[vci].tx_present = 0;
while (command_do (dev, &cmd))
schedule();
- up (&dev->vcc_sf);
+ mutex_unlock(&dev->vcc_sf);
}
// disable RXing
// this is (the?) one reason why we need the amb_vcc struct
unsigned char pool = vcc->rx_info.pool;
- down (&dev->vcc_sf);
+ mutex_lock(&dev->vcc_sf);
if (dev->txer[vci].tx_present) {
// TXer still on the channel, just go to pool zero XXX not really needed
cmd.request = cpu_to_be32 (SRB_MODIFY_VC_FLAGS);
dev->rxq[pool].buffers_wanted = 0;
drain_rx_pool (dev, pool);
}
- up (&dev->vcc_sf);
+ mutex_unlock(&dev->vcc_sf);
}
// free our structure
return;
}
-/********** Set socket options for a VC **********/
-
-// int amb_getsockopt (struct atm_vcc * atm_vcc, int level, int optname, void * optval, int optlen);
-
-/********** Set socket options for a VC **********/
-
-// int amb_setsockopt (struct atm_vcc * atm_vcc, int level, int optname, void * optval, int optlen);
-
/********** Send **********/
static int amb_send (struct atm_vcc * atm_vcc, struct sk_buff * skb) {
/* loader: write memory data blocks */
-static int __devinit loader_write (loader_block * lb,
- const amb_dev * dev, const u32 * data,
- u32 address, unsigned int count) {
- unsigned int i;
+static int __devinit loader_write (loader_block* lb,
+ const amb_dev *dev,
+ const struct ihex_binrec *rec) {
transfer_block * tb = &lb->payload.transfer;
PRINTD (DBG_FLOW|DBG_LOAD, "loader_write");
-
- if (count > MAX_TRANSFER_DATA)
- return -EINVAL;
- tb->address = cpu_to_be32 (address);
- tb->count = cpu_to_be32 (count);
- for (i = 0; i < count; ++i)
- tb->data[i] = cpu_to_be32 (data[i]);
+
+ tb->address = rec->addr;
+ tb->count = cpu_to_be32(be16_to_cpu(rec->len) / 4);
+ memcpy(tb->data, rec->data, be16_to_cpu(rec->len));
return do_loader_command (lb, dev, write_adapter_memory);
}
/* loader: verify memory data blocks */
static int __devinit loader_verify (loader_block * lb,
- const amb_dev * dev, const u32 * data,
- u32 address, unsigned int count) {
- unsigned int i;
+ const amb_dev *dev,
+ const struct ihex_binrec *rec) {
transfer_block * tb = &lb->payload.transfer;
int res;
PRINTD (DBG_FLOW|DBG_LOAD, "loader_verify");
- if (count > MAX_TRANSFER_DATA)
- return -EINVAL;
- tb->address = cpu_to_be32 (address);
- tb->count = cpu_to_be32 (count);
+ tb->address = rec->addr;
+ tb->count = cpu_to_be32(be16_to_cpu(rec->len) / 4);
res = do_loader_command (lb, dev, read_adapter_memory);
- if (!res)
- for (i = 0; i < count; ++i)
- if (tb->data[i] != cpu_to_be32 (data[i])) {
- res = -EINVAL;
- break;
- }
+ if (!res && memcmp(tb->data, rec->data, be16_to_cpu(rec->len)))
+ res = -EINVAL;
return res;
}
/********** transfer and start the microcode **********/
static int __devinit ucode_init (loader_block * lb, amb_dev * dev) {
- unsigned int i = 0;
- unsigned int total = 0;
- const u32 * pointer = ucode_data;
- u32 address;
- unsigned int count;
+ const struct firmware *fw;
+ unsigned long start_address;
+ const struct ihex_binrec *rec;
int res;
+ res = request_ihex_firmware(&fw, "atmsar11.fw", &dev->pci_dev->dev);
+ if (res) {
+ PRINTK (KERN_ERR, "Cannot load microcode data");
+ return res;
+ }
+
+ /* First record contains just the start address */
+ rec = (const struct ihex_binrec *)fw->data;
+ if (be16_to_cpu(rec->len) != sizeof(__be32) || be32_to_cpu(rec->addr)) {
+ PRINTK (KERN_ERR, "Bad microcode data (no start record)");
+ return -EINVAL;
+ }
+ start_address = be32_to_cpup((__be32 *)rec->data);
+
+ rec = ihex_next_binrec(rec);
+
PRINTD (DBG_FLOW|DBG_LOAD, "ucode_init");
-
- while (address = ucode_regions[i].start,
- count = ucode_regions[i].count) {
- PRINTD (DBG_LOAD, "starting region (%x, %u)", address, count);
- while (count) {
- unsigned int words;
- if (count <= MAX_TRANSFER_DATA)
- words = count;
- else
- words = MAX_TRANSFER_DATA;
- total += words;
- res = loader_write (lb, dev, pointer, address, words);
- if (res)
- return res;
- res = loader_verify (lb, dev, pointer, address, words);
- if (res)
- return res;
- count -= words;
- address += sizeof(u32) * words;
- pointer += words;
+
+ while (rec) {
+ PRINTD (DBG_LOAD, "starting region (%x, %u)", be32_to_cpu(rec->addr),
+ be16_to_cpu(rec->len));
+ if (be16_to_cpu(rec->len) > 4 * MAX_TRANSFER_DATA) {
+ PRINTK (KERN_ERR, "Bad microcode data (record too long)");
+ return -EINVAL;
}
- i += 1;
- }
- if (*pointer == ATM_POISON) {
- return loader_start (lb, dev, ucode_start);
- } else {
- // cast needed as there is no %? for pointer differnces
- PRINTD (DBG_LOAD|DBG_ERR,
- "offset=%li, *pointer=%x, address=%x, total=%u",
- (long) (pointer - ucode_data), *pointer, address, total);
- PRINTK (KERN_ERR, "incorrect microcode data");
- return -ENOMEM;
+ if (be16_to_cpu(rec->len) & 3) {
+ PRINTK (KERN_ERR, "Bad microcode data (odd number of bytes)");
+ return -EINVAL;
+ }
+ res = loader_write(lb, dev, rec);
+ if (res)
+ break;
+
+ res = loader_verify(lb, dev, rec);
+ if (res)
+ break;
}
+ release_firmware(fw);
+ if (!res)
+ res = loader_start(lb, dev, start_address);
+
+ return res;
}
/********** give adapter parameters **********/
PRINTK (KERN_INFO, "microcode version is %u.%u", major, minor);
}
-// swap bits within byte to get Ethernet ordering
-static u8 bit_swap (u8 byte)
-{
- const u8 swap[] = {
- 0x0, 0x8, 0x4, 0xc,
- 0x2, 0xa, 0x6, 0xe,
- 0x1, 0x9, 0x5, 0xd,
- 0x3, 0xb, 0x7, 0xf
- };
- return ((swap[byte & 0xf]<<4) | swap[byte>>4]);
-}
-
// get end station address
static void __devinit amb_esi (amb_dev * dev, u8 * esi) {
u32 lower4;
PRINTDB (DBG_INIT, "ESI:");
for (i = 0; i < ESI_LEN; ++i) {
if (i < 4)
- esi[i] = bit_swap (lower4>>(8*i));
+ esi[i] = bitrev8(lower4>>(8*i));
else
- esi[i] = bit_swap (upper2>>(8*(i-4)));
+ esi[i] = bitrev8(upper2>>(8*(i-4)));
PRINTDM (DBG_INIT, " %02x", esi[i]);
}
static void setup_dev(amb_dev *dev, struct pci_dev *pci_dev)
{
unsigned char pool;
- memset (dev, 0, sizeof(amb_dev));
// set up known dev items straight away
dev->pci_dev = pci_dev;
// semaphore for txer/rxer modifications - we cannot use a
// spinlock as the critical region needs to switch processes
- init_MUTEX (&dev->vcc_sf);
+ mutex_init(&dev->vcc_sf);
// queue manipulation spinlocks; we want atomic reads and
// writes to the queue descriptors (handles IRQ and SMP)
// consider replacing "int pending" -> "atomic_t available"
goto out_disable;
}
- dev = kmalloc (sizeof(amb_dev), GFP_KERNEL);
+ dev = kzalloc(sizeof(amb_dev), GFP_KERNEL);
if (!dev) {
PRINTK (KERN_ERR, "out of memory!");
err = -ENOMEM;
MODULE_AUTHOR(maintainer_string);
MODULE_DESCRIPTION(description_string);
MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("atmsar11.fw");
module_param(debug, ushort, 0644);
module_param(cmds, uint, 0);
module_param(txs, uint, 0);
static void __exit amb_module_exit (void)
{
PRINTD (DBG_FLOW|DBG_INIT, "cleanup_module");
-
- return pci_unregister_driver(&amb_driver);
+
+ pci_unregister_driver(&amb_driver);
}
module_init(amb_module_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff