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Diffstat (limited to 'drivers/atm/fore200e.c')
| -rw-r--r-- | drivers/atm/fore200e.c | 3249 |
1 files changed, 3249 insertions, 0 deletions
diff --git a/drivers/atm/fore200e.c b/drivers/atm/fore200e.c new file mode 100644 index 0000000..196b336 --- /dev/null +++ b/drivers/atm/fore200e.c @@ -0,0 +1,3249 @@ +/* + $Id: fore200e.c,v 1.5 2000/04/14 10:10:34 davem Exp $ + + A FORE Systems 200E-series driver for ATM on Linux. + Christophe Lizzi (lizzi@cnam.fr), October 1999-March 2003. + + Based on the PCA-200E driver from Uwe Dannowski (Uwe.Dannowski@inf.tu-dresden.de). + + This driver simultaneously supports PCA-200E and SBA-200E adapters + on i386, alpha (untested), powerpc, sparc and sparc64 architectures. + + 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. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/capability.h> +#include <linux/sched.h> +#include <linux/interrupt.h> +#include <linux/bitops.h> +#include <linux/pci.h> +#include <linux/module.h> +#include <linux/atmdev.h> +#include <linux/sonet.h> +#include <linux/atm_suni.h> +#include <linux/dma-mapping.h> +#include <linux/delay.h> +#include <asm/io.h> +#include <asm/string.h> +#include <asm/page.h> +#include <asm/irq.h> +#include <asm/dma.h> +#include <asm/byteorder.h> +#include <asm/uaccess.h> +#include <asm/atomic.h> + +#ifdef CONFIG_ATM_FORE200E_SBA +#include <asm/idprom.h> +#include <asm/sbus.h> +#include <asm/openprom.h> +#include <asm/oplib.h> +#include <asm/pgtable.h> +#endif + +#if defined(CONFIG_ATM_FORE200E_USE_TASKLET) /* defer interrupt work to a tasklet */ +#define FORE200E_USE_TASKLET +#endif + +#if 0 /* enable the debugging code of the buffer supply queues */ +#define FORE200E_BSQ_DEBUG +#endif + +#if 1 /* ensure correct handling of 52-byte AAL0 SDUs expected by atmdump-like apps */ +#define FORE200E_52BYTE_AAL0_SDU +#endif + +#include "fore200e.h" +#include "suni.h" + +#define FORE200E_VERSION "0.3e" + +#define FORE200E "fore200e: " + +#if 0 /* override .config */ +#define CONFIG_ATM_FORE200E_DEBUG 1 +#endif +#if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG > 0) +#define DPRINTK(level, format, args...) do { if (CONFIG_ATM_FORE200E_DEBUG >= (level)) \ + printk(FORE200E format, ##args); } while (0) +#else +#define DPRINTK(level, format, args...) do {} while (0) +#endif + + +#define FORE200E_ALIGN(addr, alignment) \ + ((((unsigned long)(addr) + (alignment - 1)) & ~(alignment - 1)) - (unsigned long)(addr)) + +#define FORE200E_DMA_INDEX(dma_addr, type, index) ((dma_addr) + (index) * sizeof(type)) + +#define FORE200E_INDEX(virt_addr, type, index) (&((type *)(virt_addr))[ index ]) + +#define FORE200E_NEXT_ENTRY(index, modulo) (index = ++(index) % (modulo)) + +#if 1 +#define ASSERT(expr) if (!(expr)) { \ + printk(FORE200E "assertion failed! %s[%d]: %s\n", \ + __FUNCTION__, __LINE__, #expr); \ + panic(FORE200E "%s", __FUNCTION__); \ + } +#else +#define ASSERT(expr) do {} while (0) +#endif + + +static const struct atmdev_ops fore200e_ops; +static const struct fore200e_bus fore200e_bus[]; + +static LIST_HEAD(fore200e_boards); + + +MODULE_AUTHOR("Christophe Lizzi - credits to Uwe Dannowski and Heikki Vatiainen"); +MODULE_DESCRIPTION("FORE Systems 200E-series ATM driver - version " FORE200E_VERSION); +MODULE_SUPPORTED_DEVICE("PCA-200E, SBA-200E"); + + +static const int fore200e_rx_buf_nbr[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ] = { + { BUFFER_S1_NBR, BUFFER_L1_NBR }, + { BUFFER_S2_NBR, BUFFER_L2_NBR } +}; + +static const int fore200e_rx_buf_size[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ] = { + { BUFFER_S1_SIZE, BUFFER_L1_SIZE }, + { BUFFER_S2_SIZE, BUFFER_L2_SIZE } +}; + + +#if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG > 0) +static const char* fore200e_traffic_class[] = { "NONE", "UBR", "CBR", "VBR", "ABR", "ANY" }; +#endif + + +#if 0 /* currently unused */ +static int +fore200e_fore2atm_aal(enum fore200e_aal aal) +{ + switch(aal) { + case FORE200E_AAL0: return ATM_AAL0; + case FORE200E_AAL34: return ATM_AAL34; + case FORE200E_AAL5: return ATM_AAL5; + } + + return -EINVAL; +} +#endif + + +static enum fore200e_aal +fore200e_atm2fore_aal(int aal) +{ + switch(aal) { + case ATM_AAL0: return FORE200E_AAL0; + case ATM_AAL34: return FORE200E_AAL34; + case ATM_AAL1: + case ATM_AAL2: + case ATM_AAL5: return FORE200E_AAL5; + } + + return -EINVAL; +} + + +static char* +fore200e_irq_itoa(int irq) +{ +#if defined(__sparc_v9__) + return __irq_itoa(irq); +#else + static char str[8]; + sprintf(str, "%d", irq); + return str; +#endif +} + + +static void* +fore200e_kmalloc(int size, int flags) +{ + void* chunk = kmalloc(size, flags); + + if (chunk) + memset(chunk, 0x00, size); + else + printk(FORE200E "kmalloc() failed, requested size = %d, flags = 0x%x\n", size, flags); + + return chunk; +} + + +static void +fore200e_kfree(void* chunk) +{ + kfree(chunk); +} + + +/* allocate and align a chunk of memory intended to hold the data behing exchanged + between the driver and the adapter (using streaming DVMA) */ + +static int +fore200e_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk, int size, int alignment, int direction) +{ + unsigned long offset = 0; + + if (alignment <= sizeof(int)) + alignment = 0; + + chunk->alloc_size = size + alignment; + chunk->align_size = size; + chunk->direction = direction; + + chunk->alloc_addr = fore200e_kmalloc(chunk->alloc_size, GFP_KERNEL | GFP_DMA); + if (chunk->alloc_addr == NULL) + return -ENOMEM; + + if (alignment > 0) + offset = FORE200E_ALIGN(chunk->alloc_addr, alignment); + + chunk->align_addr = chunk->alloc_addr + offset; + + chunk->dma_addr = fore200e->bus->dma_map(fore200e, chunk->align_addr, chunk->align_size, direction); + + return 0; +} + + +/* free a chunk of memory */ + +static void +fore200e_chunk_free(struct fore200e* fore200e, struct chunk* chunk) +{ + fore200e->bus->dma_unmap(fore200e, chunk->dma_addr, chunk->dma_size, chunk->direction); + + fore200e_kfree(chunk->alloc_addr); +} + + +static void +fore200e_spin(int msecs) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(msecs); + while (time_before(jiffies, timeout)); +} + + +static int +fore200e_poll(struct fore200e* fore200e, volatile u32* addr, u32 val, int msecs) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(msecs); + int ok; + + mb(); + do { + if ((ok = (*addr == val)) || (*addr & STATUS_ERROR)) + break; + + } while (time_before(jiffies, timeout)); + +#if 1 + if (!ok) { + printk(FORE200E "cmd polling failed, got status 0x%08x, expected 0x%08x\n", + *addr, val); + } +#endif + + return ok; +} + + +static int +fore200e_io_poll(struct fore200e* fore200e, volatile u32 __iomem *addr, u32 val, int msecs) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(msecs); + int ok; + + do { + if ((ok = (fore200e->bus->read(addr) == val))) + break; + + } while (time_before(jiffies, timeout)); + +#if 1 + if (!ok) { + printk(FORE200E "I/O polling failed, got status 0x%08x, expected 0x%08x\n", + fore200e->bus->read(addr), val); + } +#endif + + return ok; +} + + +static void +fore200e_free_rx_buf(struct fore200e* fore200e) +{ + int scheme, magn, nbr; + struct buffer* buffer; + + for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) { + for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) { + + if ((buffer = fore200e->host_bsq[ scheme ][ magn ].buffer) != NULL) { + + for (nbr = 0; nbr < fore200e_rx_buf_nbr[ scheme ][ magn ]; nbr++) { + + struct chunk* data = &buffer[ nbr ].data; + + if (data->alloc_addr != NULL) + fore200e_chunk_free(fore200e, data); + } + } + } + } +} + + +static void +fore200e_uninit_bs_queue(struct fore200e* fore200e) +{ + int scheme, magn; + + for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) { + for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) { + + struct chunk* status = &fore200e->host_bsq[ scheme ][ magn ].status; + struct chunk* rbd_block = &fore200e->host_bsq[ scheme ][ magn ].rbd_block; + + if (status->alloc_addr) + fore200e->bus->dma_chunk_free(fore200e, status); + + if (rbd_block->alloc_addr) + fore200e->bus->dma_chunk_free(fore200e, rbd_block); + } + } +} + + +static int +fore200e_reset(struct fore200e* fore200e, int diag) +{ + int ok; + + fore200e->cp_monitor = fore200e->virt_base + FORE200E_CP_MONITOR_OFFSET; + + fore200e->bus->write(BSTAT_COLD_START, &fore200e->cp_monitor->bstat); + + fore200e->bus->reset(fore200e); + + if (diag) { + ok = fore200e_io_poll(fore200e, &fore200e->cp_monitor->bstat, BSTAT_SELFTEST_OK, 1000); + if (ok == 0) { + + printk(FORE200E "device %s self-test failed\n", fore200e->name); + return -ENODEV; + } + + printk(FORE200E "device %s self-test passed\n", fore200e->name); + + fore200e->state = FORE200E_STATE_RESET; + } + + return 0; +} + + +static void +fore200e_shutdown(struct fore200e* fore200e) +{ + printk(FORE200E "removing device %s at 0x%lx, IRQ %s\n", + fore200e->name, fore200e->phys_base, + fore200e_irq_itoa(fore200e->irq)); + + if (fore200e->state > FORE200E_STATE_RESET) { + /* first, reset the board to prevent further interrupts or data transfers */ + fore200e_reset(fore200e, 0); + } + + /* then, release all allocated resources */ + switch(fore200e->state) { + + case FORE200E_STATE_COMPLETE: + if (fore200e->stats) + kfree(fore200e->stats); + + case FORE200E_STATE_IRQ: + free_irq(fore200e->irq, fore200e->atm_dev); + + case FORE200E_STATE_ALLOC_BUF: + fore200e_free_rx_buf(fore200e); + + case FORE200E_STATE_INIT_BSQ: + fore200e_uninit_bs_queue(fore200e); + + case FORE200E_STATE_INIT_RXQ: + fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_rxq.status); + fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_rxq.rpd); + + case FORE200E_STATE_INIT_TXQ: + fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_txq.status); + fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_txq.tpd); + + case FORE200E_STATE_INIT_CMDQ: + fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_cmdq.status); + + case FORE200E_STATE_INITIALIZE: + /* nothing to do for that state */ + + case FORE200E_STATE_START_FW: + /* nothing to do for that state */ + + case FORE200E_STATE_LOAD_FW: + /* nothing to do for that state */ + + case FORE200E_STATE_RESET: + /* nothing to do for that state */ + + case FORE200E_STATE_MAP: + fore200e->bus->unmap(fore200e); + + case FORE200E_STATE_CONFIGURE: + /* nothing to do for that state */ + + case FORE200E_STATE_REGISTER: + /* XXX shouldn't we *start* by deregistering the device? */ + atm_dev_deregister(fore200e->atm_dev); + + case FORE200E_STATE_BLANK: + /* nothing to do for that state */ + break; + } +} + + +#ifdef CONFIG_ATM_FORE200E_PCA + +static u32 fore200e_pca_read(volatile u32 __iomem *addr) +{ + /* on big-endian hosts, the board is configured to convert + the endianess of slave RAM accesses */ + return le32_to_cpu(readl(addr)); +} + + +static void fore200e_pca_write(u32 val, volatile u32 __iomem *addr) +{ + /* on big-endian hosts, the board is configured to convert + the endianess of slave RAM accesses */ + writel(cpu_to_le32(val), addr); +} + + +static u32 +fore200e_pca_dma_map(struct fore200e* fore200e, void* virt_addr, int size, int direction) +{ + u32 dma_addr = pci_map_single((struct pci_dev*)fore200e->bus_dev, virt_addr, size, direction); + + DPRINTK(3, "PCI DVMA mapping: virt_addr = 0x%p, size = %d, direction = %d, --> dma_addr = 0x%08x\n", + virt_addr, size, direction, dma_addr); + + return dma_addr; +} + + +static void +fore200e_pca_dma_unmap(struct fore200e* fore200e, u32 dma_addr, int size, int direction) +{ + DPRINTK(3, "PCI DVMA unmapping: dma_addr = 0x%08x, size = %d, direction = %d\n", + dma_addr, size, direction); + + pci_unmap_single((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction); +} + + +static void +fore200e_pca_dma_sync_for_cpu(struct fore200e* fore200e, u32 dma_addr, int size, int direction) +{ + DPRINTK(3, "PCI DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction); + + pci_dma_sync_single_for_cpu((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction); +} + +static void +fore200e_pca_dma_sync_for_device(struct fore200e* fore200e, u32 dma_addr, int size, int direction) +{ + DPRINTK(3, "PCI DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction); + + pci_dma_sync_single_for_device((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction); +} + + +/* allocate a DMA consistent chunk of memory intended to act as a communication mechanism + (to hold descriptors, status, queues, etc.) shared by the driver and the adapter */ + +static int +fore200e_pca_dma_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk, + int size, int nbr, int alignment) +{ + /* returned chunks are page-aligned */ + chunk->alloc_size = size * nbr; + chunk->alloc_addr = pci_alloc_consistent((struct pci_dev*)fore200e->bus_dev, + chunk->alloc_size, + &chunk->dma_addr); + + if ((chunk->alloc_addr == NULL) || (chunk->dma_addr == 0)) + return -ENOMEM; + + chunk->align_addr = chunk->alloc_addr; + + return 0; +} + + +/* free a DMA consistent chunk of memory */ + +static void +fore200e_pca_dma_chunk_free(struct fore200e* fore200e, struct chunk* chunk) +{ + pci_free_consistent((struct pci_dev*)fore200e->bus_dev, + chunk->alloc_size, + chunk->alloc_addr, + chunk->dma_addr); +} + + +static int +fore200e_pca_irq_check(struct fore200e* fore200e) +{ + /* this is a 1 bit register */ + int irq_posted = readl(fore200e->regs.pca.psr); + +#if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG == 2) + if (irq_posted && (readl(fore200e->regs.pca.hcr) & PCA200E_HCR_OUTFULL)) { + DPRINTK(2,"FIFO OUT full, device %d\n", fore200e->atm_dev->number); + } +#endif + + return irq_posted; +} + + +static void +fore200e_pca_irq_ack(struct fore200e* fore200e) +{ + writel(PCA200E_HCR_CLRINTR, fore200e->regs.pca.hcr); +} + + +static void +fore200e_pca_reset(struct fore200e* fore200e) +{ + writel(PCA200E_HCR_RESET, fore200e->regs.pca.hcr); + fore200e_spin(10); + writel(0, fore200e->regs.pca.hcr); +} + + +static int __init +fore200e_pca_map(struct fore200e* fore200e) +{ + DPRINTK(2, "device %s being mapped in memory\n", fore200e->name); + + fore200e->virt_base = ioremap(fore200e->phys_base, PCA200E_IOSPACE_LENGTH); + + if (fore200e->virt_base == NULL) { + printk(FORE200E "can't map device %s\n", fore200e->name); + return -EFAULT; + } + + DPRINTK(1, "device %s mapped to 0x%p\n", fore200e->name, fore200e->virt_base); + + /* gain access to the PCA specific registers */ + fore200e->regs.pca.hcr = fore200e->virt_base + PCA200E_HCR_OFFSET; + fore200e->regs.pca.imr = fore200e->virt_base + PCA200E_IMR_OFFSET; + fore200e->regs.pca.psr = fore200e->virt_base + PCA200E_PSR_OFFSET; + + fore200e->state = FORE200E_STATE_MAP; + return 0; +} + + +static void +fore200e_pca_unmap(struct fore200e* fore200e) +{ + DPRINTK(2, "device %s being unmapped from memory\n", fore200e->name); + + if (fore200e->virt_base != NULL) + iounmap(fore200e->virt_base); +} + + +static int __init +fore200e_pca_configure(struct fore200e* fore200e) +{ + struct pci_dev* pci_dev = (struct pci_dev*)fore200e->bus_dev; + u8 master_ctrl, latency; + + DPRINTK(2, "device %s being configured\n", fore200e->name); + + if ((pci_dev->irq == 0) || (pci_dev->irq == 0xFF)) { + printk(FORE200E "incorrect IRQ setting - misconfigured PCI-PCI bridge?\n"); + return -EIO; + } + + pci_read_config_byte(pci_dev, PCA200E_PCI_MASTER_CTRL, &master_ctrl); + + master_ctrl = master_ctrl +#if defined(__BIG_ENDIAN) + /* request the PCA board to convert the endianess of slave RAM accesses */ + | PCA200E_CTRL_CONVERT_ENDIAN +#endif +#if 0 + | PCA200E_CTRL_DIS_CACHE_RD + | PCA200E_CTRL_DIS_WRT_INVAL + | PCA200E_CTRL_ENA_CONT_REQ_MODE + | PCA200E_CTRL_2_CACHE_WRT_INVAL +#endif + | PCA200E_CTRL_LARGE_PCI_BURSTS; + + pci_write_config_byte(pci_dev, PCA200E_PCI_MASTER_CTRL, master_ctrl); + + /* raise latency from 32 (default) to 192, as this seems to prevent NIC + lockups (under heavy rx loads) due to continuous 'FIFO OUT full' condition. + this may impact the performances of other PCI devices on the same bus, though */ + latency = 192; + pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency); + + fore200e->state = FORE200E_STATE_CONFIGURE; + return 0; +} + + +static int __init +fore200e_pca_prom_read(struct fore200e* fore200e, struct prom_data* prom) +{ + struct host_cmdq* cmdq = &fore200e->host_cmdq; + struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ]; + struct prom_opcode opcode; + int ok; + u32 prom_dma; + + FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD); + + opcode.opcode = OPCODE_GET_PROM; + opcode.pad = 0; + + prom_dma = fore200e->bus->dma_map(fore200e, prom, sizeof(struct prom_data), DMA_FROM_DEVICE); + + fore200e->bus->write(prom_dma, &entry->cp_entry->cmd.prom_block.prom_haddr); + + *entry->status = STATUS_PENDING; + + fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.prom_block.opcode); + + ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400); + + *entry->status = STATUS_FREE; + + fore200e->bus->dma_unmap(fore200e, prom_dma, sizeof(struct prom_data), DMA_FROM_DEVICE); + + if (ok == 0) { + printk(FORE200E "unable to get PROM data from device %s\n", fore200e->name); + return -EIO; + } + +#if defined(__BIG_ENDIAN) + +#define swap_here(addr) (*((u32*)(addr)) = swab32( *((u32*)(addr)) )) + + /* MAC address is stored as little-endian */ + swap_here(&prom->mac_addr[0]); + swap_here(&prom->mac_addr[4]); +#endif + + return 0; +} + + +static int +fore200e_pca_proc_read(struct fore200e* fore200e, char *page) +{ + struct pci_dev* pci_dev = (struct pci_dev*)fore200e->bus_dev; + + return sprintf(page, " PCI bus/slot/function:\t%d/%d/%d\n", + pci_dev->bus->number, PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn)); +} + +#endif /* CONFIG_ATM_FORE200E_PCA */ + + +#ifdef CONFIG_ATM_FORE200E_SBA + +static u32 +fore200e_sba_read(volatile u32 __iomem *addr) +{ + return sbus_readl(addr); +} + + +static void +fore200e_sba_write(u32 val, volatile u32 __iomem *addr) +{ + sbus_writel(val, addr); +} + + +static u32 +fore200e_sba_dma_map(struct fore200e* fore200e, void* virt_addr, int size, int direction) +{ + u32 dma_addr = sbus_map_single((struct sbus_dev*)fore200e->bus_dev, virt_addr, size, direction); + + DPRINTK(3, "SBUS DVMA mapping: virt_addr = 0x%p, size = %d, direction = %d --> dma_addr = 0x%08x\n", + virt_addr, size, direction, dma_addr); + + return dma_addr; +} + + +static void +fore200e_sba_dma_unmap(struct fore200e* fore200e, u32 dma_addr, int size, int direction) +{ + DPRINTK(3, "SBUS DVMA unmapping: dma_addr = 0x%08x, size = %d, direction = %d,\n", + dma_addr, size, direction); + + sbus_unmap_single((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction); +} + + +static void +fore200e_sba_dma_sync_for_cpu(struct fore200e* fore200e, u32 dma_addr, int size, int direction) +{ + DPRINTK(3, "SBUS DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction); + + sbus_dma_sync_single_for_cpu((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction); +} + +static void +fore200e_sba_dma_sync_for_device(struct fore200e* fore200e, u32 dma_addr, int size, int direction) +{ + DPRINTK(3, "SBUS DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction); + + sbus_dma_sync_single_for_device((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction); +} + + +/* allocate a DVMA consistent chunk of memory intended to act as a communication mechanism + (to hold descriptors, status, queues, etc.) shared by the driver and the adapter */ + +static int +fore200e_sba_dma_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk, + int size, int nbr, int alignment) +{ + chunk->alloc_size = chunk->align_size = size * nbr; + + /* returned chunks are page-aligned */ + chunk->alloc_addr = sbus_alloc_consistent((struct sbus_dev*)fore200e->bus_dev, + chunk->alloc_size, + &chunk->dma_addr); + + if ((chunk->alloc_addr == NULL) || (chunk->dma_addr == 0)) + return -ENOMEM; + + chunk->align_addr = chunk->alloc_addr; + + return 0; +} + + +/* free a DVMA consistent chunk of memory */ + +static void +fore200e_sba_dma_chunk_free(struct fore200e* fore200e, struct chunk* chunk) +{ + sbus_free_consistent((struct sbus_dev*)fore200e->bus_dev, + chunk->alloc_size, + chunk->alloc_addr, + chunk->dma_addr); +} + + +static void +fore200e_sba_irq_enable(struct fore200e* fore200e) +{ + u32 hcr = fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_STICKY; + fore200e->bus->write(hcr | SBA200E_HCR_INTR_ENA, fore200e->regs.sba.hcr); +} + + +static int +fore200e_sba_irq_check(struct fore200e* fore200e) +{ + return fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_INTR_REQ; +} + + +static void +fore200e_sba_irq_ack(struct fore200e* fore200e) +{ + u32 hcr = fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_STICKY; + fore200e->bus->write(hcr | SBA200E_HCR_INTR_CLR, fore200e->regs.sba.hcr); +} + + +static void +fore200e_sba_reset(struct fore200e* fore200e) +{ + fore200e->bus->write(SBA200E_HCR_RESET, fore200e->regs.sba.hcr); + fore200e_spin(10); + fore200e->bus->write(0, fore200e->regs.sba.hcr); +} + + +static int __init +fore200e_sba_map(struct fore200e* fore200e) +{ + struct sbus_dev* sbus_dev = (struct sbus_dev*)fore200e->bus_dev; + unsigned int bursts; + + /* gain access to the SBA specific registers */ + fore200e->regs.sba.hcr = sbus_ioremap(&sbus_dev->resource[0], 0, SBA200E_HCR_LENGTH, "SBA HCR"); + fore200e->regs.sba.bsr = sbus_ioremap(&sbus_dev->resource[1], 0, SBA200E_BSR_LENGTH, "SBA BSR"); + fore200e->regs.sba.isr = sbus_ioremap(&sbus_dev->resource[2], 0, SBA200E_ISR_LENGTH, "SBA ISR"); + fore200e->virt_base = sbus_ioremap(&sbus_dev->resource[3], 0, SBA200E_RAM_LENGTH, "SBA RAM"); + + if (fore200e->virt_base == NULL) { + printk(FORE200E "unable to map RAM of device %s\n", fore200e->name); + return -EFAULT; + } + + DPRINTK(1, "device %s mapped to 0x%p\n", fore200e->name, fore200e->virt_base); + + fore200e->bus->write(0x02, fore200e->regs.sba.isr); /* XXX hardwired interrupt level */ + + /* get the supported DVMA burst sizes */ + bursts = prom_getintdefault(sbus_dev->bus->prom_node, "burst-sizes", 0x00); + + if (sbus_can_dma_64bit(sbus_dev)) + sbus_set_sbus64(sbus_dev, bursts); + + fore200e->state = FORE200E_STATE_MAP; + return 0; +} + + +static void +fore200e_sba_unmap(struct fore200e* fore200e) +{ + sbus_iounmap(fore200e->regs.sba.hcr, SBA200E_HCR_LENGTH); + sbus_iounmap(fore200e->regs.sba.bsr, SBA200E_BSR_LENGTH); + sbus_iounmap(fore200e->regs.sba.isr, SBA200E_ISR_LENGTH); + sbus_iounmap(fore200e->virt_base, SBA200E_RAM_LENGTH); +} + + +static int __init +fore200e_sba_configure(struct fore200e* fore200e) +{ + fore200e->state = FORE200E_STATE_CONFIGURE; + return 0; +} + + +static struct fore200e* __init +fore200e_sba_detect(const struct fore200e_bus* bus, int index) +{ + struct fore200e* fore200e; + struct sbus_bus* sbus_bus; + struct sbus_dev* sbus_dev = NULL; + + unsigned int count = 0; + + for_each_sbus (sbus_bus) { + for_each_sbusdev (sbus_dev, sbus_bus) { + if (strcmp(sbus_dev->prom_name, SBA200E_PROM_NAME) == 0) { + if (count >= index) + goto found; + count++; + } + } + } + return NULL; + + found: + if (sbus_dev->num_registers != 4) { + printk(FORE200E "this %s device has %d instead of 4 registers\n", + bus->model_name, sbus_dev->num_registers); + return NULL; + } + + fore200e = fore200e_kmalloc(sizeof(struct fore200e), GFP_KERNEL); + if (fore200e == NULL) + return NULL; + + fore200e->bus = bus; + fore200e->bus_dev = sbus_dev; + fore200e->irq = sbus_dev->irqs[ 0 ]; + + fore200e->phys_base = (unsigned long)sbus_dev; + + sprintf(fore200e->name, "%s-%d", bus->model_name, index - 1); + + return fore200e; +} + + +static int __init +fore200e_sba_prom_read(struct fore200e* fore200e, struct prom_data* prom) +{ + struct sbus_dev* sbus_dev = (struct sbus_dev*) fore200e->bus_dev; + int len; + + len = prom_getproperty(sbus_dev->prom_node, "macaddrlo2", &prom->mac_addr[ 4 ], 4); + if (len < 0) + return -EBUSY; + + len = prom_getproperty(sbus_dev->prom_node, "macaddrhi4", &prom->mac_addr[ 2 ], 4); + if (len < 0) + return -EBUSY; + + prom_getproperty(sbus_dev->prom_node, "serialnumber", + (char*)&prom->serial_number, sizeof(prom->serial_number)); + + prom_getproperty(sbus_dev->prom_node, "promversion", + (char*)&prom->hw_revision, sizeof(prom->hw_revision)); + + return 0; +} + + +static int +fore200e_sba_proc_read(struct fore200e* fore200e, char *page) +{ + struct sbus_dev* sbus_dev = (struct sbus_dev*)fore200e->bus_dev; + + return sprintf(page, " SBUS slot/device:\t\t%d/'%s'\n", sbus_dev->slot, sbus_dev->prom_name); +} +#endif /* CONFIG_ATM_FORE200E_SBA */ + + +static void +fore200e_tx_irq(struct fore200e* fore200e) +{ + struct host_txq* txq = &fore200e->host_txq; + struct host_txq_entry* entry; + struct atm_vcc* vcc; + struct fore200e_vc_map* vc_map; + + if (fore200e->host_txq.txing == 0) + return; + + for (;;) { + + entry = &txq->host_entry[ txq->tail ]; + + if ((*entry->status & STATUS_COMPLETE) == 0) { + break; + } + + DPRINTK(3, "TX COMPLETED: entry = %p [tail = %d], vc_map = %p, skb = %p\n", + entry, txq->tail, entry->vc_map, entry->skb); + + /* free copy of misaligned data */ + if (entry->data) + kfree(entry->data); + + /* remove DMA mapping */ + fore200e->bus->dma_unmap(fore200e, entry->tpd->tsd[ 0 ].buffer, entry->tpd->tsd[ 0 ].length, + DMA_TO_DEVICE); + + vc_map = entry->vc_map; + + /* vcc closed since the time the entry was submitted for tx? */ + if ((vc_map->vcc == NULL) || + (test_bit(ATM_VF_READY, &vc_map->vcc->flags) == 0)) { + + DPRINTK(1, "no ready vcc found for PDU sent on device %d\n", + fore200e->atm_dev->number); + + dev_kfree_skb_any(entry->skb); + } + else { + ASSERT(vc_map->vcc); + + /* vcc closed then immediately re-opened? */ + if (vc_map->incarn != entry->incarn) { + + /* when a vcc is closed, some PDUs may be still pending in the tx queue. + if the same vcc is immediately re-opened, those pending PDUs must + not be popped after the completion of their emission, as they refer + to the prior incarnation of that vcc. otherwise, sk_atm(vcc)->sk_wmem_alloc + would be decremented by the size of the (unrelated) skb, possibly + leading to a negative sk->sk_wmem_alloc count, ultimately freezing the vcc. + we thus bind the tx entry to the current incarnation of the vcc + when the entry is submitted for tx. When the tx later completes, + if the incarnation number of the tx entry does not match the one + of the vcc, then this implies that the vcc has been closed then re-opened. + we thus just drop the skb here. */ + + DPRINTK(1, "vcc closed-then-re-opened; dropping PDU sent on device %d\n", + fore200e->atm_dev->number); + + dev_kfree_skb_any(entry->skb); + } + else { + vcc = vc_map->vcc; + ASSERT(vcc); + + /* notify tx completion */ + if (vcc->pop) { + vcc->pop(vcc, entry->skb); + } + else { + dev_kfree_skb_any(entry->skb); + } +#if 1 + /* race fixed by the above incarnation mechanism, but... */ + if (atomic_read(&sk_atm(vcc)->sk_wmem_alloc) < 0) { + atomic_set(&sk_atm(vcc)->sk_wmem_alloc, 0); + } +#endif + /* check error condition */ + if (*entry->status & STATUS_ERROR) + atomic_inc(&vcc->stats->tx_err); + else + atomic_inc(&vcc->stats->tx); + } + } + + *entry->status = STATUS_FREE; + + fore200e->host_txq.txing--; + + FORE200E_NEXT_ENTRY(txq->tail, QUEUE_SIZE_TX); + } +} + + +#ifdef FORE200E_BSQ_DEBUG +int bsq_audit(int where, struct host_bsq* bsq, int scheme, int magn) +{ + struct buffer* buffer; + int count = 0; + + buffer = bsq->freebuf; + while (buffer) { + + if (buffer->supplied) { + printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld supplied but in free list!\n", + where, scheme, magn, buffer->index); + } + + if (buffer->magn != magn) { + printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld, unexpected magn = %d\n", + where, scheme, magn, buffer->index, buffer->magn); + } + + if (buffer->scheme != scheme) { + printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld, unexpected scheme = %d\n", + where, scheme, magn, buffer->index, buffer->scheme); + } + + if ((buffer->index < 0) || (buffer->index >= fore200e_rx_buf_nbr[ scheme ][ magn ])) { + printk(FORE200E "bsq_audit(%d): queue %d.%d, out of range buffer index = %ld !\n", + where, scheme, magn, buffer->index); + } + + count++; + buffer = buffer->next; + } + + if (count != bsq->freebuf_count) { + printk(FORE200E "bsq_audit(%d): queue %d.%d, %d bufs in free list, but freebuf_count = %d\n", + where, scheme, magn, count, bsq->freebuf_count); + } + return 0; +} +#endif + + +static void +fore200e_supply(struct fore200e* fore200e) +{ + int scheme, magn, i; + + struct host_bsq* bsq; + struct host_bsq_entry* entry; + struct buffer* buffer; + + for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) { + for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) { + + bsq = &fore200e->host_bsq[ scheme ][ magn ]; + +#ifdef FORE200E_BSQ_DEBUG + bsq_audit(1, bsq, scheme, magn); +#endif + while (bsq->freebuf_count >= RBD_BLK_SIZE) { + + DPRINTK(2, "supplying %d rx buffers to queue %d / %d, freebuf_count = %d\n", + RBD_BLK_SIZE, scheme, magn, bsq->freebuf_count); + + entry = &bsq->host_entry[ bsq->head ]; + + for (i = 0; i < RBD_BLK_SIZE; i++) { + + /* take the first buffer in the free buffer list */ + buffer = bsq->freebuf; + if (!buffer) { + printk(FORE200E "no more free bufs in queue %d.%d, but freebuf_count = %d\n", + scheme, magn, bsq->freebuf_count); + return; + } + bsq->freebuf = buffer->next; + +#ifdef FORE200E_BSQ_DEBUG + if (buffer->supplied) + printk(FORE200E "queue %d.%d, buffer %lu already supplied\n", + scheme, magn, buffer->index); + buffer->supplied = 1; +#endif + entry->rbd_block->rbd[ i ].buffer_haddr = buffer->data.dma_addr; + entry->rbd_block->rbd[ i ].handle = FORE200E_BUF2HDL(buffer); + } + + FORE200E_NEXT_ENTRY(bsq->head, QUEUE_SIZE_BS); + + /* decrease accordingly the number of free rx buffers */ + bsq->freebuf_count -= RBD_BLK_SIZE; + + *entry->status = STATUS_PENDING; + fore200e->bus->write(entry->rbd_block_dma, &entry->cp_entry->rbd_block_haddr); + } + } + } +} + + +static int +fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rpd) +{ + struct sk_buff* skb; + struct buffer* buffer; + struct fore200e_vcc* fore200e_vcc; + int i, pdu_len = 0; +#ifdef FORE200E_52BYTE_AAL0_SDU + u32 cell_header = 0; +#endif + + ASSERT(vcc); + + fore200e_vcc = FORE200E_VCC(vcc); + ASSERT(fore200e_vcc); + +#ifdef FORE200E_52BYTE_AAL0_SDU + if ((vcc->qos.aal == ATM_AAL0) && (vcc->qos.rxtp.max_sdu == ATM_AAL0_SDU)) { + + cell_header = (rpd->atm_header.gfc << ATM_HDR_GFC_SHIFT) | + (rpd->atm_header.vpi << ATM_HDR_VPI_SHIFT) | + (rpd->atm_header.vci << ATM_HDR_VCI_SHIFT) | + (rpd->atm_header.plt << ATM_HDR_PTI_SHIFT) | + rpd->atm_header.clp; + pdu_len = 4; + } +#endif + + /* compute total PDU length */ + for (i = 0; i < rpd->nseg; i++) + pdu_len += rpd->rsd[ i ].length; + + skb = alloc_skb(pdu_len, GFP_ATOMIC); + if (skb == NULL) { + DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len); + + atomic_inc(&vcc->stats->rx_drop); + return -ENOMEM; + } + + do_gettimeofday(&skb->stamp); + +#ifdef FORE200E_52BYTE_AAL0_SDU + if (cell_header) { + *((u32*)skb_put(skb, 4)) = cell_header; + } +#endif + + /* reassemble segments */ + for (i = 0; i < rpd->nseg; i++) { + + /* rebuild rx buffer address from rsd handle */ + buffer = FORE200E_HDL2BUF(rpd->rsd[ i ].handle); + + /* Make device DMA transfer visible to CPU. */ + fore200e->bus->dma_sync_for_cpu(fore200e, buffer->data.dma_addr, rpd->rsd[ i ].length, DMA_FROM_DEVICE); + + memcpy(skb_put(skb, rpd->rsd[ i ].length), buffer->data.align_addr, rpd->rsd[ i ].length); + + /* Now let the device get at it again. */ + fore200e->bus->dma_sync_for_device(fore200e, buffer->data.dma_addr, rpd->rsd[ i ].length, DMA_FROM_DEVICE); + } + + DPRINTK(3, "rx skb: len = %d, truesize = %d\n", skb->len, skb->truesize); + + if (pdu_len < fore200e_vcc->rx_min_pdu) + fore200e_vcc->rx_min_pdu = pdu_len; + if (pdu_len > fore200e_vcc->rx_max_pdu) + fore200e_vcc->rx_max_pdu = pdu_len; + fore200e_vcc->rx_pdu++; + + /* push PDU */ + if (atm_charge(vcc, skb->truesize) == 0) { + + DPRINTK(2, "receive buffers saturated for %d.%d.%d - PDU dropped\n", + vcc->itf, vcc->vpi, vcc->vci); + + dev_kfree_skb_any(skb); + + atomic_inc(&vcc->stats->rx_drop); + return -ENOMEM; + } + + ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0); + + vcc->push(vcc, skb); + atomic_inc(&vcc->stats->rx); + + ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0); + + return 0; +} + + +static void +fore200e_collect_rpd(struct fore200e* fore200e, struct rpd* rpd) +{ + struct host_bsq* bsq; + struct buffer* buffer; + int i; + + for (i = 0; i < rpd->nseg; i++) { + + /* rebuild rx buffer address from rsd handle */ + buffer = FORE200E_HDL2BUF(rpd->rsd[ i ].handle); + + bsq = &fore200e->host_bsq[ buffer->scheme ][ buffer->magn ]; + +#ifdef FORE200E_BSQ_DEBUG + bsq_audit(2, bsq, buffer->scheme, buffer->magn); + + if (buffer->supplied == 0) + printk(FORE200E "queue %d.%d, buffer %ld was not supplied\n", + buffer->scheme, buffer->magn, buffer->index); + buffer->supplied = 0; +#endif + + /* re-insert the buffer into the free buffer list */ + buffer->next = bsq->freebuf; + bsq->freebuf = buffer; + + /* then increment the number of free rx buffers */ + bsq->freebuf_count++; + } +} + + +static void +fore200e_rx_irq(struct fore200e* fore200e) +{ + struct host_rxq* rxq = &fore200e->host_rxq; + struct host_rxq_entry* entry; + struct atm_vcc* vcc; + struct fore200e_vc_map* vc_map; + + for (;;) { + + entry = &rxq->host_entry[ rxq->head ]; + + /* no more received PDUs */ + if ((*entry->status & STATUS_COMPLETE) == 0) + break; + + vc_map = FORE200E_VC_MAP(fore200e, entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci); + + if ((vc_map->vcc == NULL) || + (test_bit(ATM_VF_READY, &vc_map->vcc->flags) == 0)) { + + DPRINTK(1, "no ready VC found for PDU received on %d.%d.%d\n", + fore200e->atm_dev->number, + entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci); + } + else { + vcc = vc_map->vcc; + ASSERT(vcc); + + if ((*entry->status & STATUS_ERROR) == 0) { + + fore200e_push_rpd(fore200e, vcc, entry->rpd); + } + else { + DPRINTK(2, "damaged PDU on %d.%d.%d\n", + fore200e->atm_dev->number, + entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci); + atomic_inc(&vcc->stats->rx_err); + } + } + + FORE200E_NEXT_ENTRY(rxq->head, QUEUE_SIZE_RX); + + fore200e_collect_rpd(fore200e, entry->rpd); + + /* rewrite the rpd address to ack the received PDU */ + fore200e->bus->write(entry->rpd_dma, &entry->cp_entry->rpd_haddr); + *entry->status = STATUS_FREE; + + fore200e_supply(fore200e); + } +} + + +#ifndef FORE200E_USE_TASKLET +static void +fore200e_irq(struct fore200e* fore200e) +{ + unsigned long flags; + + spin_lock_irqsave(&fore200e->q_lock, flags); + fore200e_rx_irq(fore200e); + spin_unlock_irqrestore(&fore200e->q_lock, flags); + + spin_lock_irqsave(&fore200e->q_lock, flags); + fore200e_tx_irq(fore200e); + spin_unlock_irqrestore(&fore200e->q_lock, flags); +} +#endif + + +static irqreturn_t +fore200e_interrupt(int irq, void* dev, struct pt_regs* regs) +{ + struct fore200e* fore200e = FORE200E_DEV((struct atm_dev*)dev); + + if (fore200e->bus->irq_check(fore200e) == 0) { + + DPRINTK(3, "interrupt NOT triggered by device %d\n", fore200e->atm_dev->number); + return IRQ_NONE; + } + DPRINTK(3, "interrupt triggered by device %d\n", fore200e->atm_dev->number); + +#ifdef FORE200E_USE_TASKLET + tasklet_schedule(&fore200e->tx_tasklet); + tasklet_schedule(&fore200e->rx_tasklet); +#else + fore200e_irq(fore200e); +#endif + + fore200e->bus->irq_ack(fore200e); + return IRQ_HANDLED; +} + + +#ifdef FORE200E_USE_TASKLET +static void +fore200e_tx_tasklet(unsigned long data) +{ + struct fore200e* fore200e = (struct fore200e*) data; + unsigned long flags; + + DPRINTK(3, "tx tasklet scheduled for device %d\n", fore200e->atm_dev->number); + + spin_lock_irqsave(&fore200e->q_lock, flags); + fore200e_tx_irq(fore200e); + spin_unlock_irqrestore(&fore200e->q_lock, flags); +} + + +static void +fore200e_rx_tasklet(unsigned long data) +{ + struct fore200e* fore200e = (struct fore200e*) data; + unsigned long flags; + + DPRINTK(3, "rx tasklet scheduled for device %d\n", fore200e->atm_dev->number); + + spin_lock_irqsave(&fore200e->q_lock, flags); + fore200e_rx_irq((struct fore200e*) data); + spin_unlock_irqrestore(&fore200e->q_lock, flags); +} +#endif + + +static int +fore200e_select_scheme(struct atm_vcc* vcc) +{ + /* fairly balance the VCs over (identical) buffer schemes */ + int scheme = vcc->vci % 2 ? BUFFER_SCHEME_ONE : BUFFER_SCHEME_TWO; + + DPRINTK(1, "VC %d.%d.%d uses buffer scheme %d\n", + vcc->itf, vcc->vpi, vcc->vci, scheme); + + return scheme; +} + + +static int +fore200e_activate_vcin(struct fore200e* fore200e, int activate, struct atm_vcc* vcc, int mtu) +{ + struct host_cmdq* cmdq = &fore200e->host_cmdq; + struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ]; + struct activate_opcode activ_opcode; + struct deactivate_opcode deactiv_opcode; + struct vpvc vpvc; + int ok; + enum fore200e_aal aal = fore200e_atm2fore_aal(vcc->qos.aal); + + FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD); + + if (activate) { + FORE200E_VCC(vcc)->scheme = fore200e_select_scheme(vcc); + + activ_opcode.opcode = OPCODE_ACTIVATE_VCIN; + activ_opcode.aal = aal; + activ_opcode.scheme = FORE200E_VCC(vcc)->scheme; + activ_opcode.pad = 0; + } + else { + deactiv_opcode.opcode = OPCODE_DEACTIVATE_VCIN; + deactiv_opcode.pad = 0; + } + + vpvc.vci = vcc->vci; + vpvc.vpi = vcc->vpi; + + *entry->status = STATUS_PENDING; + + if (activate) { + +#ifdef FORE200E_52BYTE_AAL0_SDU + mtu = 48; +#endif + /* the MTU is not used by the cp, except in the case of AAL0 */ + fore200e->bus->write(mtu, &entry->cp_entry->cmd.activate_block.mtu); + fore200e->bus->write(*(u32*)&vpvc, (u32 __iomem *)&entry->cp_entry->cmd.activate_block.vpvc); + fore200e->bus->write(*(u32*)&activ_opcode, (u32 __iomem *)&entry->cp_entry->cmd.activate_block.opcode); + } + else { + fore200e->bus->write(*(u32*)&vpvc, (u32 __iomem *)&entry->cp_entry->cmd.deactivate_block.vpvc); + fore200e->bus->write(*(u32*)&deactiv_opcode, (u32 __iomem *)&entry->cp_entry->cmd.deactivate_block.opcode); + } + + ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400); + + *entry->status = STATUS_FREE; + + if (ok == 0) { + printk(FORE200E "unable to %s VC %d.%d.%d\n", + activate ? "open" : "close", vcc->itf, vcc->vpi, vcc->vci); + return -EIO; + } + + DPRINTK(1, "VC %d.%d.%d %sed\n", vcc->itf, vcc->vpi, vcc->vci, + activate ? "open" : "clos"); + + return 0; +} + + +#define FORE200E_MAX_BACK2BACK_CELLS 255 /* XXX depends on CDVT */ + +static void +fore200e_rate_ctrl(struct atm_qos* qos, struct tpd_rate* rate) +{ + if (qos->txtp.max_pcr < ATM_OC3_PCR) { + + /* compute the data cells to idle cells ratio from the tx PCR */ + rate->data_cells = qos->txtp.max_pcr * FORE200E_MAX_BACK2BACK_CELLS / ATM_OC3_PCR; + rate->idle_cells = FORE200E_MAX_BACK2BACK_CELLS - rate->data_cells; + } + else { + /* disable rate control */ + rate->data_cells = rate->idle_cells = 0; + } +} + + +static int +fore200e_open(struct atm_vcc *vcc) +{ + struct fore200e* fore200e = FORE200E_DEV(vcc->dev); + struct fore200e_vcc* fore200e_vcc; + struct fore200e_vc_map* vc_map; + unsigned long flags; + int vci = vcc->vci; + short vpi = vcc->vpi; + + ASSERT((vpi >= 0) && (vpi < 1<<FORE200E_VPI_BITS)); + ASSERT((vci >= 0) && (vci < 1<<FORE200E_VCI_BITS)); + + spin_lock_irqsave(&fore200e->q_lock, flags); + + vc_map = FORE200E_VC_MAP(fore200e, vpi, vci); + if (vc_map->vcc) { + + spin_unlock_irqrestore(&fore200e->q_lock, flags); + + printk(FORE200E "VC %d.%d.%d already in use\n", + fore200e->atm_dev->number, vpi, vci); + + return -EINVAL; + } + + vc_map->vcc = vcc; + + spin_unlock_irqrestore(&fore200e->q_lock, flags); + + fore200e_vcc = fore200e_kmalloc(sizeof(struct fore200e_vcc), GFP_ATOMIC); + if (fore200e_vcc == NULL) { + vc_map->vcc = NULL; + return -ENOMEM; + } + + DPRINTK(2, "opening %d.%d.%d:%d QoS = (tx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d; " + "rx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d)\n", + vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal), + fore200e_traffic_class[ vcc->qos.txtp.traffic_class ], + vcc->qos.txtp.min_pcr, vcc->qos.txtp.max_pcr, vcc->qos.txtp.max_cdv, vcc->qos.txtp.max_sdu, + fore200e_traffic_class[ vcc->qos.rxtp.traffic_class ], + vcc->qos.rxtp.min_pcr, vcc->qos.rxtp.max_pcr, vcc->qos.rxtp.max_cdv, vcc->qos.rxtp.max_sdu); + + /* pseudo-CBR bandwidth requested? */ + if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) { + + down(&fore200e->rate_sf); + if (fore200e->available_cell_rate < vcc->qos.txtp.max_pcr) { + up(&fore200e->rate_sf); + + fore200e_kfree(fore200e_vcc); + vc_map->vcc = NULL; + return -EAGAIN; + } + + /* reserve bandwidth */ + fore200e->available_cell_rate -= vcc->qos.txtp.max_pcr; + up(&fore200e->rate_sf); + } + + vcc->itf = vcc->dev->number; + + set_bit(ATM_VF_PARTIAL,&vcc->flags); + set_bit(ATM_VF_ADDR, &vcc->flags); + + vcc->dev_data = fore200e_vcc; + + if (fore200e_activate_vcin(fore200e, 1, vcc, vcc->qos.rxtp.max_sdu) < 0) { + + vc_map->vcc = NULL; + + clear_bit(ATM_VF_ADDR, &vcc->flags); + clear_bit(ATM_VF_PARTIAL,&vcc->flags); + + vcc->dev_data = NULL; + + fore200e->available_cell_rate += vcc->qos.txtp.max_pcr; + + fore200e_kfree(fore200e_vcc); + return -EINVAL; + } + + /* compute rate control parameters */ + if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) { + + fore200e_rate_ctrl(&vcc->qos, &fore200e_vcc->rate); + set_bit(ATM_VF_HASQOS, &vcc->flags); + + DPRINTK(3, "tx on %d.%d.%d:%d, tx PCR = %d, rx PCR = %d, data_cells = %u, idle_cells = %u\n", + vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal), + vcc->qos.txtp.max_pcr, vcc->qos.rxtp.max_pcr, + fore200e_vcc->rate.data_cells, fore200e_vcc->rate.idle_cells); + } + + fore200e_vcc->tx_min_pdu = fore200e_vcc->rx_min_pdu = MAX_PDU_SIZE + 1; + fore200e_vcc->tx_max_pdu = fore200e_vcc->rx_max_pdu = 0; + fore200e_vcc->tx_pdu = fore200e_vcc->rx_pdu = 0; + + /* new incarnation of the vcc */ + vc_map->incarn = ++fore200e->incarn_count; + + /* VC unusable before this flag is set */ + set_bit(ATM_VF_READY, &vcc->flags); + + return 0; +} + + +static void +fore200e_close(struct atm_vcc* vcc) +{ + struct fore200e* fore200e = FORE200E_DEV(vcc->dev); + struct fore200e_vcc* fore200e_vcc; + struct fore200e_vc_map* vc_map; + unsigned long flags; + + ASSERT(vcc); + ASSERT((vcc->vpi >= 0) && (vcc->vpi < 1<<FORE200E_VPI_BITS)); + ASSERT((vcc->vci >= 0) && (vcc->vci < 1<<FORE200E_VCI_BITS)); + + DPRINTK(2, "closing %d.%d.%d:%d\n", vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal)); + + clear_bit(ATM_VF_READY, &vcc->flags); + + fore200e_activate_vcin(fore200e, 0, vcc, 0); + + spin_lock_irqsave(&fore200e->q_lock, flags); + + vc_map = FORE200E_VC_MAP(fore200e, vcc->vpi, vcc->vci); + + /* the vc is no longer considered as "in use" by fore200e_open() */ + vc_map->vcc = NULL; + + vcc->itf = vcc->vci = vcc->vpi = 0; + + fore200e_vcc = FORE200E_VCC(vcc); + vcc->dev_data = NULL; + + spin_unlock_irqrestore(&fore200e->q_lock, flags); + + /* release reserved bandwidth, if any */ + if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) { + + down(&fore200e->rate_sf); + fore200e->available_cell_rate += vcc->qos.txtp.max_pcr; + up(&fore200e->rate_sf); + + clear_bit(ATM_VF_HASQOS, &vcc->flags); + } + + clear_bit(ATM_VF_ADDR, &vcc->flags); + clear_bit(ATM_VF_PARTIAL,&vcc->flags); + + ASSERT(fore200e_vcc); + fore200e_kfree(fore200e_vcc); +} + + +static int +fore200e_send(struct atm_vcc *vcc, struct sk_buff *skb) +{ + struct fore200e* fore200e = FORE200E_DEV(vcc->dev); + struct fore200e_vcc* fore200e_vcc = FORE200E_VCC(vcc); + struct fore200e_vc_map* vc_map; + struct host_txq* txq = &fore200e->host_txq; + struct host_txq_entry* entry; + struct tpd* tpd; + struct tpd_haddr tpd_haddr; + int retry = CONFIG_ATM_FORE200E_TX_RETRY; + int tx_copy = 0; + int tx_len = skb->len; + u32* cell_header = NULL; + unsigned char* skb_data; + int skb_len; + unsigned char* data; + unsigned long flags; + + ASSERT(vcc); + ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0); + ASSERT(fore200e); + ASSERT(fore200e_vcc); + + if (!test_bit(ATM_VF_READY, &vcc->flags)) { + DPRINTK(1, "VC %d.%d.%d not ready for tx\n", vcc->itf, vcc->vpi, vcc->vpi); + dev_kfree_skb_any(skb); + return -EINVAL; + } + +#ifdef FORE200E_52BYTE_AAL0_SDU + if ((vcc->qos.aal == ATM_AAL0) && (vcc->qos.txtp.max_sdu == ATM_AAL0_SDU)) { + cell_header = (u32*) skb->data; + skb_data = skb->data + 4; /* skip 4-byte cell header */ + skb_len = tx_len = skb->len - 4; + + DPRINTK(3, "user-supplied cell header = 0x%08x\n", *cell_header); + } + else +#endif + { + skb_data = skb->data; + skb_len = skb->len; + } + + if (((unsigned long)skb_data) & 0x3) { + + DPRINTK(2, "misaligned tx PDU on device %s\n", fore200e->name); + tx_copy = 1; + tx_len = skb_len; + } + + if ((vcc->qos.aal == ATM_AAL0) && (skb_len % ATM_CELL_PAYLOAD)) { + + /* this simply NUKES the PCA board */ + DPRINTK(2, "incomplete tx AAL0 PDU on device %s\n", fore200e->name); + tx_copy = 1; + tx_len = ((skb_len / ATM_CELL_PAYLOAD) + 1) * ATM_CELL_PAYLOAD; + } + + if (tx_copy) { + data = kmalloc(tx_len, GFP_ATOMIC | GFP_DMA); + if (data == NULL) { + if (vcc->pop) { + vcc->pop(vcc, skb); + } + else { + dev_kfree_skb_any(skb); + } + return -ENOMEM; + } + + memcpy(data, skb_data, skb_len); + if (skb_len < tx_len) + memset(data + skb_len, 0x00, tx_len - skb_len); + } + else { + data = skb_data; + } + + vc_map = FORE200E_VC_MAP(fore200e, vcc->vpi, vcc->vci); + ASSERT(vc_map->vcc == vcc); + + retry_here: + + spin_lock_irqsave(&fore200e->q_lock, flags); + + entry = &txq->host_entry[ txq->head ]; + + if ((*entry->status != STATUS_FREE) || (txq->txing >= QUEUE_SIZE_TX - 2)) { + + /* try to free completed tx queue entries */ + fore200e_tx_irq(fore200e); + + if (*entry->status != STATUS_FREE) { + + spin_unlock_irqrestore(&fore200e->q_lock, flags); + + /* retry once again? */ + if (--retry > 0) { + udelay(50); + goto retry_here; + } + + atomic_inc(&vcc->stats->tx_err); + + fore200e->tx_sat++; + DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n", + fore200e->name, fore200e->cp_queues->heartbeat); + if (vcc->pop) { + vcc->pop(vcc, skb); + } + else { + dev_kfree_skb_any(skb); + } + + if (tx_copy) + kfree(data); + + return -ENOBUFS; + } + } + + entry->incarn = vc_map->incarn; + entry->vc_map = vc_map; + entry->skb = skb; + entry->data = tx_copy ? data : NULL; + + tpd = entry->tpd; + tpd->tsd[ 0 ].buffer = fore200e->bus->dma_map(fore200e, data, tx_len, DMA_TO_DEVICE); + tpd->tsd[ 0 ].length = tx_len; + + FORE200E_NEXT_ENTRY(txq->head, QUEUE_SIZE_TX); + txq->txing++; + + /* The dma_map call above implies a dma_sync so the device can use it, + * thus no explicit dma_sync call is necessary here. + */ + + DPRINTK(3, "tx on %d.%d.%d:%d, len = %u (%u)\n", + vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal), + tpd->tsd[0].length, skb_len); + + if (skb_len < fore200e_vcc->tx_min_pdu) + fore200e_vcc->tx_min_pdu = skb_len; + if (skb_len > fore200e_vcc->tx_max_pdu) + fore200e_vcc->tx_max_pdu = skb_len; + fore200e_vcc->tx_pdu++; + + /* set tx rate control information */ + tpd->rate.data_cells = fore200e_vcc->rate.data_cells; + tpd->rate.idle_cells = fore200e_vcc->rate.idle_cells; + + if (cell_header) { + tpd->atm_header.clp = (*cell_header & ATM_HDR_CLP); + tpd->atm_header.plt = (*cell_header & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT; + tpd->atm_header.vci = (*cell_header & ATM_HDR_VCI_MASK) >> ATM_HDR_VCI_SHIFT; + tpd->atm_header.vpi = (*cell_header & ATM_HDR_VPI_MASK) >> ATM_HDR_VPI_SHIFT; + tpd->atm_header.gfc = (*cell_header & ATM_HDR_GFC_MASK) >> ATM_HDR_GFC_SHIFT; + } + else { + /* set the ATM header, common to all cells conveying the PDU */ + tpd->atm_header.clp = 0; + tpd->atm_header.plt = 0; + tpd->atm_header.vci = vcc->vci; + tpd->atm_header.vpi = vcc->vpi; + tpd->atm_header.gfc = 0; + } + + tpd->spec.length = tx_len; + tpd->spec.nseg = 1; + tpd->spec.aal = fore200e_atm2fore_aal(vcc->qos.aal); + tpd->spec.intr = 1; + + tpd_haddr.size = sizeof(struct tpd) / (1<<TPD_HADDR_SHIFT); /* size is expressed in 32 byte blocks */ + tpd_haddr.pad = 0; + tpd_haddr.haddr = entry->tpd_dma >> TPD_HADDR_SHIFT; /* shift the address, as we are in a bitfield */ + + *entry->status = STATUS_PENDING; + fore200e->bus->write(*(u32*)&tpd_haddr, (u32 __iomem *)&entry->cp_entry->tpd_haddr); + + spin_unlock_irqrestore(&fore200e->q_lock, flags); + + return 0; +} + + +static int +fore200e_getstats(struct fore200e* fore200e) +{ + struct host_cmdq* cmdq = &fore200e->host_cmdq; + struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ]; + struct stats_opcode opcode; + int ok; + u32 stats_dma_addr; + + if (fore200e->stats == NULL) { + fore200e->stats = fore200e_kmalloc(sizeof(struct stats), GFP_KERNEL | GFP_DMA); + if (fore200e->stats == NULL) + return -ENOMEM; + } + + stats_dma_addr = fore200e->bus->dma_map(fore200e, fore200e->stats, + sizeof(struct stats), DMA_FROM_DEVICE); + + FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD); + + opcode.opcode = OPCODE_GET_STATS; + opcode.pad = 0; + + fore200e->bus->write(stats_dma_addr, &entry->cp_entry->cmd.stats_block.stats_haddr); + + *entry->status = STATUS_PENDING; + + fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.stats_block.opcode); + + ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400); + + *entry->status = STATUS_FREE; + + fore200e->bus->dma_unmap(fore200e, stats_dma_addr, sizeof(struct stats), DMA_FROM_DEVICE); + + if (ok == 0) { + printk(FORE200E "unable to get statistics from device %s\n", fore200e->name); + return -EIO; + } + + return 0; +} + + +static int +fore200e_getsockopt(struct atm_vcc* vcc, int level, int optname, void __user *optval, int optlen) +{ + /* struct fore200e* fore200e = FORE200E_DEV(vcc->dev); */ + + DPRINTK(2, "getsockopt %d.%d.%d, level = %d, optname = 0x%x, optval = 0x%p, optlen = %d\n", + vcc->itf, vcc->vpi, vcc->vci, level, optname, optval, optlen); + + return -EINVAL; +} + + +static int +fore200e_setsockopt(struct atm_vcc* vcc, int level, int optname, void __user *optval, int optlen) +{ + /* struct fore200e* fore200e = FORE200E_DEV(vcc->dev); */ + + DPRINTK(2, "setsockopt %d.%d.%d, level = %d, optname = 0x%x, optval = 0x%p, optlen = %d\n", + vcc->itf, vcc->vpi, vcc->vci, level, optname, optval, optlen); + + return -EINVAL; +} + + +#if 0 /* currently unused */ +static int +fore200e_get_oc3(struct fore200e* fore200e, struct oc3_regs* regs) +{ + struct host_cmdq* cmdq = &fore200e->host_cmdq; + struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ]; + struct oc3_opcode opcode; + int ok; + u32 oc3_regs_dma_addr; + + oc3_regs_dma_addr = fore200e->bus->dma_map(fore200e, regs, sizeof(struct oc3_regs), DMA_FROM_DEVICE); + + FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD); + + opcode.opcode = OPCODE_GET_OC3; + opcode.reg = 0; + opcode.value = 0; + opcode.mask = 0; + + fore200e->bus->write(oc3_regs_dma_addr, &entry->cp_entry->cmd.oc3_block.regs_haddr); + + *entry->status = STATUS_PENDING; + + fore200e->bus->write(*(u32*)&opcode, (u32*)&entry->cp_entry->cmd.oc3_block.opcode); + + ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400); + + *entry->status = STATUS_FREE; + + fore200e->bus->dma_unmap(fore200e, oc3_regs_dma_addr, sizeof(struct oc3_regs), DMA_FROM_DEVICE); + + if (ok == 0) { + printk(FORE200E "unable to get OC-3 regs of device %s\n", fore200e->name); + return -EIO; + } + + return 0; +} +#endif + + +static int +fore200e_set_oc3(struct fore200e* fore200e, u32 reg, u32 value, u32 mask) +{ + struct host_cmdq* cmdq = &fore200e->host_cmdq; + struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ]; + struct oc3_opcode opcode; + int ok; + + DPRINTK(2, "set OC-3 reg = 0x%02x, value = 0x%02x, mask = 0x%02x\n", reg, value, mask); + + FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD); + + opcode.opcode = OPCODE_SET_OC3; + opcode.reg = reg; + opcode.value = value; + opcode.mask = mask; + + fore200e->bus->write(0, &entry->cp_entry->cmd.oc3_block.regs_haddr); + + *entry->status = STATUS_PENDING; + + fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.oc3_block.opcode); + + ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400); + + *entry->status = STATUS_FREE; + + if (ok == 0) { + printk(FORE200E "unable to set OC-3 reg 0x%02x of device %s\n", reg, fore200e->name); + return -EIO; + } + + return 0; +} + + +static int +fore200e_setloop(struct fore200e* fore200e, int loop_mode) +{ + u32 mct_value, mct_mask; + int error; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + switch (loop_mode) { + + case ATM_LM_NONE: + mct_value = 0; + mct_mask = SUNI_MCT_DLE | SUNI_MCT_LLE; + break; + + case ATM_LM_LOC_PHY: + mct_value = mct_mask = SUNI_MCT_DLE; + break; + + case ATM_LM_RMT_PHY: + mct_value = mct_mask = SUNI_MCT_LLE; + break; + + default: + return -EINVAL; + } + + error = fore200e_set_oc3(fore200e, SUNI_MCT, mct_value, mct_mask); + if (error == 0) + fore200e->loop_mode = loop_mode; + + return error; +} + + +static inline unsigned int +fore200e_swap(unsigned int in) +{ +#if defined(__LITTLE_ENDIAN) + return swab32(in); +#else + return in; +#endif +} + + +static int +fore200e_fetch_stats(struct fore200e* fore200e, struct sonet_stats __user *arg) +{ + struct sonet_stats tmp; + + if (fore200e_getstats(fore200e) < 0) + return -EIO; + + tmp.section_bip = fore200e_swap(fore200e->stats->oc3.section_bip8_errors); + tmp.line_bip = fore200e_swap(fore200e->stats->oc3.line_bip24_errors); + tmp.path_bip = fore200e_swap(fore200e->stats->oc3.path_bip8_errors); + tmp.line_febe = fore200e_swap(fore200e->stats->oc3.line_febe_errors); + tmp.path_febe = fore200e_swap(fore200e->stats->oc3.path_febe_errors); + tmp.corr_hcs = fore200e_swap(fore200e->stats->oc3.corr_hcs_errors); + tmp.uncorr_hcs = fore200e_swap(fore200e->stats->oc3.ucorr_hcs_errors); + tmp.tx_cells = fore200e_swap(fore200e->stats->aal0.cells_transmitted) + + fore200e_swap(fore200e->stats->aal34.cells_transmitted) + + fore200e_swap(fore200e->stats->aal5.cells_transmitted); + tmp.rx_cells = fore200e_swap(fore200e->stats->aal0.cells_received) + + fore200e_swap(fore200e->stats->aal34.cells_received) + + fore200e_swap(fore200e->stats->aal5.cells_received); + + if (arg) + return copy_to_user(arg, &tmp, sizeof(struct sonet_stats)) ? -EFAULT : 0; + + return 0; +} + + +static int +fore200e_ioctl(struct atm_dev* dev, unsigned int cmd, void __user * arg) +{ + struct fore200e* fore200e = FORE200E_DEV(dev); + + DPRINTK(2, "ioctl cmd = 0x%x (%u), arg = 0x%p (%lu)\n", cmd, cmd, arg, (unsigned long)arg); + + switch (cmd) { + + case SONET_GETSTAT: + return fore200e_fetch_stats(fore200e, (struct sonet_stats __user *)arg); + + case SONET_GETDIAG: + return put_user(0, (int __user *)arg) ? -EFAULT : 0; + + case ATM_SETLOOP: + return fore200e_setloop(fore200e, (int)(unsigned long)arg); + + case ATM_GETLOOP: + return put_user(fore200e->loop_mode, (int __user *)arg) ? -EFAULT : 0; + + case ATM_QUERYLOOP: + return put_user(ATM_LM_LOC_PHY | ATM_LM_RMT_PHY, (int __user *)arg) ? -EFAULT : 0; + } + + return -ENOSYS; /* not implemented */ +} + + +static int +fore200e_change_qos(struct atm_vcc* vcc,struct atm_qos* qos, int flags) +{ + struct fore200e_vcc* fore200e_vcc = FORE200E_VCC(vcc); + struct fore200e* fore200e = FORE200E_DEV(vcc->dev); + + if (!test_bit(ATM_VF_READY, &vcc->flags)) { + DPRINTK(1, "VC %d.%d.%d not ready for QoS change\n", vcc->itf, vcc->vpi, vcc->vpi); + return -EINVAL; + } + + DPRINTK(2, "change_qos %d.%d.%d, " + "(tx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d; " + "rx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d), flags = 0x%x\n" + "available_cell_rate = %u", + vcc->itf, vcc->vpi, vcc->vci, + fore200e_traffic_class[ qos->txtp.traffic_class ], + qos->txtp.min_pcr, qos->txtp.max_pcr, qos->txtp.max_cdv, qos->txtp.max_sdu, + fore200e_traffic_class[ qos->rxtp.traffic_class ], + qos->rxtp.min_pcr, qos->rxtp.max_pcr, qos->rxtp.max_cdv, qos->rxtp.max_sdu, + flags, fore200e->available_cell_rate); + + if ((qos->txtp.traffic_class == ATM_CBR) && (qos->txtp.max_pcr > 0)) { + + down(&fore200e->rate_sf); + if (fore200e->available_cell_rate + vcc->qos.txtp.max_pcr < qos->txtp.max_pcr) { + up(&fore200e->rate_sf); + return -EAGAIN; + } + + fore200e->available_cell_rate += vcc->qos.txtp.max_pcr; + fore200e->available_cell_rate -= qos->txtp.max_pcr; + + up(&fore200e->rate_sf); + + memcpy(&vcc->qos, qos, sizeof(struct atm_qos)); + + /* update rate control parameters */ + fore200e_rate_ctrl(qos, &fore200e_vcc->rate); + + set_bit(ATM_VF_HASQOS, &vcc->flags); + + return 0; + } + + return -EINVAL; +} + + +static int __init +fore200e_irq_request(struct fore200e* fore200e) +{ + if (request_irq(fore200e->irq, fore200e_interrupt, SA_SHIRQ, fore200e->name, fore200e->atm_dev) < 0) { + + printk(FORE200E "unable to reserve IRQ %s for device %s\n", + fore200e_irq_itoa(fore200e->irq), fore200e->name); + return -EBUSY; + } + + printk(FORE200E "IRQ %s reserved for device %s\n", + fore200e_irq_itoa(fore200e->irq), fore200e->name); + +#ifdef FORE200E_USE_TASKLET + tasklet_init(&fore200e->tx_tasklet, fore200e_tx_tasklet, (unsigned long)fore200e); + tasklet_init(&fore200e->rx_tasklet, fore200e_rx_tasklet, (unsigned long)fore200e); +#endif + + fore200e->state = FORE200E_STATE_IRQ; + return 0; +} + + +static int __init +fore200e_get_esi(struct fore200e* fore200e) +{ + struct prom_data* prom = fore200e_kmalloc(sizeof(struct prom_data), GFP_KERNEL | GFP_DMA); + int ok, i; + + if (!prom) + return -ENOMEM; + + ok = fore200e->bus->prom_read(fore200e, prom); + if (ok < 0) { + fore200e_kfree(prom); + return -EBUSY; + } + + printk(FORE200E "device %s, rev. %c, S/N: %d, ESI: %02x:%02x:%02x:%02x:%02x:%02x\n", + fore200e->name, + (prom->hw_revision & 0xFF) + '@', /* probably meaningless with SBA boards */ + prom->serial_number & 0xFFFF, + prom->mac_addr[ 2 ], prom->mac_addr[ 3 ], prom->mac_addr[ 4 ], + prom->mac_addr[ 5 ], prom->mac_addr[ 6 ], prom->mac_addr[ 7 ]); + + for (i = 0; i < ESI_LEN; i++) { + fore200e->esi[ i ] = fore200e->atm_dev->esi[ i ] = prom->mac_addr[ i + 2 ]; + } + + fore200e_kfree(prom); + + return 0; +} + + +static int __init +fore200e_alloc_rx_buf(struct fore200e* fore200e) +{ + int scheme, magn, nbr, size, i; + + struct host_bsq* bsq; + struct buffer* buffer; + + for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) { + for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) { + + bsq = &fore200e->host_bsq[ scheme ][ magn ]; + + nbr = fore200e_rx_buf_nbr[ scheme ][ magn ]; + size = fore200e_rx_buf_size[ scheme ][ magn ]; + + DPRINTK(2, "rx buffers %d / %d are being allocated\n", scheme, magn); + + /* allocate the array of receive buffers */ + buffer = bsq->buffer = fore200e_kmalloc(nbr * sizeof(struct buffer), GFP_KERNEL); + + if (buffer == NULL) + return -ENOMEM; + + bsq->freebuf = NULL; + + for (i = 0; i < nbr; i++) { + + buffer[ i ].scheme = scheme; + buffer[ i ].magn = magn; +#ifdef FORE200E_BSQ_DEBUG + buffer[ i ].index = i; + buffer[ i ].supplied = 0; +#endif + + /* allocate the receive buffer body */ + if (fore200e_chunk_alloc(fore200e, + &buffer[ i ].data, size, fore200e->bus->buffer_alignment, + DMA_FROM_DEVICE) < 0) { + + while (i > 0) + fore200e_chunk_free(fore200e, &buffer[ --i ].data); + fore200e_kfree(buffer); + + return -ENOMEM; + } + + /* insert the buffer into the free buffer list */ + buffer[ i ].next = bsq->freebuf; + bsq->freebuf = &buffer[ i ]; + } + /* all the buffers are free, initially */ + bsq->freebuf_count = nbr; + +#ifdef FORE200E_BSQ_DEBUG + bsq_audit(3, bsq, scheme, magn); +#endif + } + } + + fore200e->state = FORE200E_STATE_ALLOC_BUF; + return 0; +} + + +static int __init +fore200e_init_bs_queue(struct fore200e* fore200e) +{ + int scheme, magn, i; + + struct host_bsq* bsq; + struct cp_bsq_entry __iomem * cp_entry; + + for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) { + for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) { + + DPRINTK(2, "buffer supply queue %d / %d is being initialized\n", scheme, magn); + + bsq = &fore200e->host_bsq[ scheme ][ magn ]; + + /* allocate and align the array of status words */ + if (fore200e->bus->dma_chunk_alloc(fore200e, + &bsq->status, + sizeof(enum status), + QUEUE_SIZE_BS, + fore200e->bus->status_alignment) < 0) { + return -ENOMEM; + } + + /* allocate and align the array of receive buffer descriptors */ + if (fore200e->bus->dma_chunk_alloc(fore200e, + &bsq->rbd_block, + sizeof(struct rbd_block), + QUEUE_SIZE_BS, + fore200e->bus->descr_alignment) < 0) { + + fore200e->bus->dma_chunk_free(fore200e, &bsq->status); + return -ENOMEM; + } + + /* get the base address of the cp resident buffer supply queue entries */ + cp_entry = fore200e->virt_base + + fore200e->bus->read(&fore200e->cp_queues->cp_bsq[ scheme ][ magn ]); + + /* fill the host resident and cp resident buffer supply queue entries */ + for (i = 0; i < QUEUE_SIZE_BS; i++) { + + bsq->host_entry[ i ].status = + FORE200E_INDEX(bsq->status.align_addr, enum status, i); + bsq->host_entry[ i ].rbd_block = + FORE200E_INDEX(bsq->rbd_block.align_addr, struct rbd_block, i); + bsq->host_entry[ i ].rbd_block_dma = + FORE200E_DMA_INDEX(bsq->rbd_block.dma_addr, struct rbd_block, i); + bsq->host_entry[ i ].cp_entry = &cp_entry[ i ]; + + *bsq->host_entry[ i ].status = STATUS_FREE; + + fore200e->bus->write(FORE200E_DMA_INDEX(bsq->status.dma_addr, enum status, i), + &cp_entry[ i ].status_haddr); + } + } + } + + fore200e->state = FORE200E_STATE_INIT_BSQ; + return 0; +} + + +static int __init +fore200e_init_rx_queue(struct fore200e* fore200e) +{ + struct host_rxq* rxq = &fore200e->host_rxq; + struct cp_rxq_entry __iomem * cp_entry; + int i; + + DPRINTK(2, "receive queue is being initialized\n"); + + /* allocate and align the array of status words */ + if (fore200e->bus->dma_chunk_alloc(fore200e, + &rxq->status, + sizeof(enum status), + QUEUE_SIZE_RX, + fore200e->bus->status_alignment) < 0) { + return -ENOMEM; + } + + /* allocate and align the array of receive PDU descriptors */ + if (fore200e->bus->dma_chunk_alloc(fore200e, + &rxq->rpd, + sizeof(struct rpd), + QUEUE_SIZE_RX, + fore200e->bus->descr_alignment) < 0) { + + fore200e->bus->dma_chunk_free(fore200e, &rxq->status); + return -ENOMEM; + } + + /* get the base address of the cp resident rx queue entries */ + cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_rxq); + + /* fill the host resident and cp resident rx entries */ + for (i=0; i < QUEUE_SIZE_RX; i++) { + + rxq->host_entry[ i ].status = + FORE200E_INDEX(rxq->status.align_addr, enum status, i); + rxq->host_entry[ i ].rpd = + FORE200E_INDEX(rxq->rpd.align_addr, struct rpd, i); + rxq->host_entry[ i ].rpd_dma = + FORE200E_DMA_INDEX(rxq->rpd.dma_addr, struct rpd, i); + rxq->host_entry[ i ].cp_entry = &cp_entry[ i ]; + + *rxq->host_entry[ i ].status = STATUS_FREE; + + fore200e->bus->write(FORE200E_DMA_INDEX(rxq->status.dma_addr, enum status, i), + &cp_entry[ i ].status_haddr); + + fore200e->bus->write(FORE200E_DMA_INDEX(rxq->rpd.dma_addr, struct rpd, i), + &cp_entry[ i ].rpd_haddr); + } + + /* set the head entry of the queue */ + rxq->head = 0; + + fore200e->state = FORE200E_STATE_INIT_RXQ; + return 0; +} + + +static int __init +fore200e_init_tx_queue(struct fore200e* fore200e) +{ + struct host_txq* txq = &fore200e->host_txq; + struct cp_txq_entry __iomem * cp_entry; + int i; + + DPRINTK(2, "transmit queue is being initialized\n"); + + /* allocate and align the array of status words */ + if (fore200e->bus->dma_chunk_alloc(fore200e, + &txq->status, + sizeof(enum status), + QUEUE_SIZE_TX, + fore200e->bus->status_alignment) < 0) { + return -ENOMEM; + } + + /* allocate and align the array of transmit PDU descriptors */ + if (fore200e->bus->dma_chunk_alloc(fore200e, + &txq->tpd, + sizeof(struct tpd), + QUEUE_SIZE_TX, + fore200e->bus->descr_alignment) < 0) { + + fore200e->bus->dma_chunk_free(fore200e, &txq->status); + return -ENOMEM; + } + + /* get the base address of the cp resident tx queue entries */ + cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_txq); + + /* fill the host resident and cp resident tx entries */ + for (i=0; i < QUEUE_SIZE_TX; i++) { + + txq->host_entry[ i ].status = + FORE200E_INDEX(txq->status.align_addr, enum status, i); + txq->host_entry[ i ].tpd = + FORE200E_INDEX(txq->tpd.align_addr, struct tpd, i); + txq->host_entry[ i ].tpd_dma = + FORE200E_DMA_INDEX(txq->tpd.dma_addr, struct tpd, i); + txq->host_entry[ i ].cp_entry = &cp_entry[ i ]; + + *txq->host_entry[ i ].status = STATUS_FREE; + + fore200e->bus->write(FORE200E_DMA_INDEX(txq->status.dma_addr, enum status, i), + &cp_entry[ i ].status_haddr); + + /* although there is a one-to-one mapping of tx queue entries and tpds, + we do not write here the DMA (physical) base address of each tpd into + the related cp resident entry, because the cp relies on this write + operation to detect that a new pdu has been submitted for tx */ + } + + /* set the head and tail entries of the queue */ + txq->head = 0; + txq->tail = 0; + + fore200e->state = FORE200E_STATE_INIT_TXQ; + return 0; +} + + +static int __init +fore200e_init_cmd_queue(struct fore200e* fore200e) +{ + struct host_cmdq* cmdq = &fore200e->host_cmdq; + struct cp_cmdq_entry __iomem * cp_entry; + int i; + + DPRINTK(2, "command queue is being initialized\n"); + + /* allocate and align the array of status words */ + if (fore200e->bus->dma_chunk_alloc(fore200e, + &cmdq->status, + sizeof(enum status), + QUEUE_SIZE_CMD, + fore200e->bus->status_alignment) < 0) { + return -ENOMEM; + } + + /* get the base address of the cp resident cmd queue entries */ + cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_cmdq); + + /* fill the host resident and cp resident cmd entries */ + for (i=0; i < QUEUE_SIZE_CMD; i++) { + + cmdq->host_entry[ i ].status = + FORE200E_INDEX(cmdq->status.align_addr, enum status, i); + cmdq->host_entry[ i ].cp_entry = &cp_entry[ i ]; + + *cmdq->host_entry[ i ].status = STATUS_FREE; + + fore200e->bus->write(FORE200E_DMA_INDEX(cmdq->status.dma_addr, enum status, i), + &cp_entry[ i ].status_haddr); + } + + /* set the head entry of the queue */ + cmdq->head = 0; + + fore200e->state = FORE200E_STATE_INIT_CMDQ; + return 0; +} + + +static void __init +fore200e_param_bs_queue(struct fore200e* fore200e, + enum buffer_scheme scheme, enum buffer_magn magn, + int queue_length, int pool_size, int supply_blksize) +{ + struct bs_spec __iomem * bs_spec = &fore200e->cp_queues->init.bs_spec[ scheme ][ magn ]; + + fore200e->bus->write(queue_length, &bs_spec->queue_length); + fore200e->bus->write(fore200e_rx_buf_size[ scheme ][ magn ], &bs_spec->buffer_size); + fore200e->bus->write(pool_size, &bs_spec->pool_size); + fore200e->bus->write(supply_blksize, &bs_spec->supply_blksize); +} + + +static int __init +fore200e_initialize(struct fore200e* fore200e) +{ + struct cp_queues __iomem * cpq; + int ok, scheme, magn; + + DPRINTK(2, "device %s being initialized\n", fore200e->name); + + init_MUTEX(&fore200e->rate_sf); + spin_lock_init(&fore200e->q_lock); + + cpq = fore200e->cp_queues = fore200e->virt_base + FORE200E_CP_QUEUES_OFFSET; + + /* enable cp to host interrupts */ + fore200e->bus->write(1, &cpq->imask); + + if (fore200e->bus->irq_enable) + fore200e->bus->irq_enable(fore200e); + + fore200e->bus->write(NBR_CONNECT, &cpq->init.num_connect); + + fore200e->bus->write(QUEUE_SIZE_CMD, &cpq->init.cmd_queue_len); + fore200e->bus->write(QUEUE_SIZE_RX, &cpq->init.rx_queue_len); + fore200e->bus->write(QUEUE_SIZE_TX, &cpq->init.tx_queue_len); + + fore200e->bus->write(RSD_EXTENSION, &cpq->init.rsd_extension); + fore200e->bus->write(TSD_EXTENSION, &cpq->init.tsd_extension); + + for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) + for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) + fore200e_param_bs_queue(fore200e, scheme, magn, + QUEUE_SIZE_BS, + fore200e_rx_buf_nbr[ scheme ][ magn ], + RBD_BLK_SIZE); + + /* issue the initialize command */ + fore200e->bus->write(STATUS_PENDING, &cpq->init.status); + fore200e->bus->write(OPCODE_INITIALIZE, &cpq->init.opcode); + + ok = fore200e_io_poll(fore200e, &cpq->init.status, STATUS_COMPLETE, 3000); + if (ok == 0) { + printk(FORE200E "device %s initialization failed\n", fore200e->name); + return -ENODEV; + } + + printk(FORE200E "device %s initialized\n", fore200e->name); + + fore200e->state = FORE200E_STATE_INITIALIZE; + return 0; +} + + +static void __init +fore200e_monitor_putc(struct fore200e* fore200e, char c) +{ + struct cp_monitor __iomem * monitor = fore200e->cp_monitor; + +#if 0 + printk("%c", c); +#endif + fore200e->bus->write(((u32) c) | FORE200E_CP_MONITOR_UART_AVAIL, &monitor->soft_uart.send); +} + + +static int __init +fore200e_monitor_getc(struct fore200e* fore200e) +{ + struct cp_monitor __iomem * monitor = fore200e->cp_monitor; + unsigned long timeout = jiffies + msecs_to_jiffies(50); + int c; + + while (time_before(jiffies, timeout)) { + + c = (int) fore200e->bus->read(&monitor->soft_uart.recv); + + if (c & FORE200E_CP_MONITOR_UART_AVAIL) { + + fore200e->bus->write(FORE200E_CP_MONITOR_UART_FREE, &monitor->soft_uart.recv); +#if 0 + printk("%c", c & 0xFF); +#endif + return c & 0xFF; + } + } + + return -1; +} + + +static void __init +fore200e_monitor_puts(struct fore200e* fore200e, char* str) +{ + while (*str) { + + /* the i960 monitor doesn't accept any new character if it has something to say */ + while (fore200e_monitor_getc(fore200e) >= 0); + + fore200e_monitor_putc(fore200e, *str++); + } + + while (fore200e_monitor_getc(fore200e) >= 0); +} + + +static int __init +fore200e_start_fw(struct fore200e* fore200e) +{ + int ok; + char cmd[ 48 ]; + struct fw_header* fw_header = (struct fw_header*) fore200e->bus->fw_data; + + DPRINTK(2, "device %s firmware being started\n", fore200e->name); + +#if defined(__sparc_v9__) + /* reported to be required by SBA cards on some sparc64 hosts */ + fore200e_spin(100); +#endif + + sprintf(cmd, "\rgo %x\r", le32_to_cpu(fw_header->start_offset)); + + fore200e_monitor_puts(fore200e, cmd); + + ok = fore200e_io_poll(fore200e, &fore200e->cp_monitor->bstat, BSTAT_CP_RUNNING, 1000); + if (ok == 0) { + printk(FORE200E "device %s firmware didn't start\n", fore200e->name); + return -ENODEV; + } + + printk(FORE200E "device %s firmware started\n", fore200e->name); + + fore200e->state = FORE200E_STATE_START_FW; + return 0; +} + + +static int __init +fore200e_load_fw(struct fore200e* fore200e) +{ + u32* fw_data = (u32*) fore200e->bus->fw_data; + u32 fw_size = (u32) *fore200e->bus->fw_size / sizeof(u32); + + struct fw_header* fw_header = (struct fw_header*) fw_data; + + u32 __iomem *load_addr = fore200e->virt_base + le32_to_cpu(fw_header->load_offset); + + DPRINTK(2, "device %s firmware being loaded at 0x%p (%d words)\n", + fore200e->name, load_addr, fw_size); + + if (le32_to_cpu(fw_header->magic) != FW_HEADER_MAGIC) { + printk(FORE200E "corrupted %s firmware image\n", fore200e->bus->model_name); + return -ENODEV; + } + + for (; fw_size--; fw_data++, load_addr++) + fore200e->bus->write(le32_to_cpu(*fw_data), load_addr); + + fore200e->state = FORE200E_STATE_LOAD_FW; + return 0; +} + + +static int __init +fore200e_register(struct fore200e* fore200e) +{ + struct atm_dev* atm_dev; + + DPRINTK(2, "device %s being registered\n", fore200e->name); + + atm_dev = atm_dev_register(fore200e->bus->proc_name, &fore200e_ops, -1, + NULL); + if (atm_dev == NULL) { + printk(FORE200E "unable to register device %s\n", fore200e->name); + return -ENODEV; + } + + atm_dev->dev_data = fore200e; + fore200e->atm_dev = atm_dev; + + atm_dev->ci_range.vpi_bits = FORE200E_VPI_BITS; + atm_dev->ci_range.vci_bits = FORE200E_VCI_BITS; + + fore200e->available_cell_rate = ATM_OC3_PCR; + + fore200e->state = FORE200E_STATE_REGISTER; + return 0; +} + + +static int __init +fore200e_init(struct fore200e* fore200e) +{ + if (fore200e_register(fore200e) < 0) + return -ENODEV; + + if (fore200e->bus->configure(fore200e) < 0) + return -ENODEV; + + if (fore200e->bus->map(fore200e) < 0) + return -ENODEV; + + if (fore200e_reset(fore200e, 1) < 0) + return -ENODEV; + + if (fore200e_load_fw(fore200e) < 0) + return -ENODEV; + + if (fore200e_start_fw(fore200e) < 0) + return -ENODEV; + + if (fore200e_initialize(fore200e) < 0) + return -ENODEV; + + if (fore200e_init_cmd_queue(fore200e) < 0) + return -ENOMEM; + + if (fore200e_init_tx_queue(fore200e) < 0) + return -ENOMEM; + + if (fore200e_init_rx_queue(fore200e) < 0) + return -ENOMEM; + + if (fore200e_init_bs_queue(fore200e) < 0) + return -ENOMEM; + + if (fore200e_alloc_rx_buf(fore200e) < 0) + return -ENOMEM; + + if (fore200e_get_esi(fore200e) < 0) + return -EIO; + + if (fore200e_irq_request(fore200e) < 0) + return -EBUSY; + + fore200e_supply(fore200e); + + /* all done, board initialization is now complete */ + fore200e->state = FORE200E_STATE_COMPLETE; + return 0; +} + + +static int __devinit +fore200e_pca_detect(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent) +{ + const struct fore200e_bus* bus = (struct fore200e_bus*) pci_ent->driver_data; + struct fore200e* fore200e; + int err = 0; + static int index = 0; + + if (pci_enable_device(pci_dev)) { + err = -EINVAL; + goto out; + } + + fore200e = fore200e_kmalloc(sizeof(struct fore200e), GFP_KERNEL); + if (fore200e == NULL) { + err = -ENOMEM; + goto out_disable; + } + + fore200e->bus = bus; + fore200e->bus_dev = pci_dev; + fore200e->irq = pci_dev->irq; + fore200e->phys_base = pci_resource_start(pci_dev, 0); + + sprintf(fore200e->name, "%s-%d", bus->model_name, index - 1); + + pci_set_master(pci_dev); + + printk(FORE200E "device %s found at 0x%lx, IRQ %s\n", + fore200e->bus->model_name, + fore200e->phys_base, fore200e_irq_itoa(fore200e->irq)); + + sprintf(fore200e->name, "%s-%d", bus->model_name, index); + + err = fore200e_init(fore200e); + if (err < 0) { + fore200e_shutdown(fore200e); + goto out_free; + } + + ++index; + pci_set_drvdata(pci_dev, fore200e); + +out: + return err; + +out_free: + kfree(fore200e); +out_disable: + pci_disable_device(pci_dev); + goto out; +} + + +static void __devexit fore200e_pca_remove_one(struct pci_dev *pci_dev) +{ + struct fore200e *fore200e; + + fore200e = pci_get_drvdata(pci_dev); + + list_del(&fore200e->entry); + + fore200e_shutdown(fore200e); + kfree(fore200e); + pci_disable_device(pci_dev); +} + + +#ifdef CONFIG_ATM_FORE200E_PCA +static struct pci_device_id fore200e_pca_tbl[] = { + { PCI_VENDOR_ID_FORE, PCI_DEVICE_ID_FORE_PCA200E, PCI_ANY_ID, PCI_ANY_ID, + 0, 0, (unsigned long) &fore200e_bus[0] }, + { 0, } +}; + +MODULE_DEVICE_TABLE(pci, fore200e_pca_tbl); + +static struct pci_driver fore200e_pca_driver = { + .name = "fore_200e", + .probe = fore200e_pca_detect, + .remove = __devexit_p(fore200e_pca_remove_one), + .id_table = fore200e_pca_tbl, +}; +#endif + + +static int __init +fore200e_module_init(void) +{ + const struct fore200e_bus* bus; + struct fore200e* fore200e; + int index; + + printk(FORE200E "FORE Systems 200E-series ATM driver - version " FORE200E_VERSION "\n"); + + /* for each configured bus interface */ + for (bus = fore200e_bus; bus->model_name; bus++) { + + /* detect all boards present on that bus */ + for (index = 0; bus->detect && (fore200e = bus->detect(bus, index)); index++) { + + printk(FORE200E "device %s found at 0x%lx, IRQ %s\n", + fore200e->bus->model_name, + fore200e->phys_base, fore200e_irq_itoa(fore200e->irq)); + + sprintf(fore200e->name, "%s-%d", bus->model_name, index); + + if (fore200e_init(fore200e) < 0) { + + fore200e_shutdown(fore200e); + break; + } + + list_add(&fore200e->entry, &fore200e_boards); + } + } + +#ifdef CONFIG_ATM_FORE200E_PCA + if (!pci_module_init(&fore200e_pca_driver)) + return 0; +#endif + + if (!list_empty(&fore200e_boards)) + return 0; + + return -ENODEV; +} + + +static void __exit +fore200e_module_cleanup(void) +{ + struct fore200e *fore200e, *next; + +#ifdef CONFIG_ATM_FORE200E_PCA + pci_unregister_driver(&fore200e_pca_driver); +#endif + + list_for_each_entry_safe(fore200e, next, &fore200e_boards, entry) { + fore200e_shutdown(fore200e); + kfree(fore200e); + } + DPRINTK(1, "module being removed\n"); +} + + +static int +fore200e_proc_read(struct atm_dev *dev, loff_t* pos, char* page) +{ + struct fore200e* fore200e = FORE200E_DEV(dev); + struct fore200e_vcc* fore200e_vcc; + struct atm_vcc* vcc; + int i, len, left = *pos; + unsigned long flags; + + if (!left--) { + + if (fore200e_getstats(fore200e) < 0) + return -EIO; + + len = sprintf(page,"\n" + " device:\n" + " internal name:\t\t%s\n", fore200e->name); + + /* print bus-specific information */ + if (fore200e->bus->proc_read) + len += fore200e->bus->proc_read(fore200e, page + len); + + len += sprintf(page + len, + " interrupt line:\t\t%s\n" + " physical base address:\t0x%p\n" + " virtual base address:\t0x%p\n" + " factory address (ESI):\t%02x:%02x:%02x:%02x:%02x:%02x\n" + " board serial number:\t\t%d\n\n", + fore200e_irq_itoa(fore200e->irq), + (void*)fore200e->phys_base, + fore200e->virt_base, + fore200e->esi[0], fore200e->esi[1], fore200e->esi[2], + fore200e->esi[3], fore200e->esi[4], fore200e->esi[5], + fore200e->esi[4] * 256 + fore200e->esi[5]); + + return len; + } + + if (!left--) + return sprintf(page, + " free small bufs, scheme 1:\t%d\n" + " free large bufs, scheme 1:\t%d\n" + " free small bufs, scheme 2:\t%d\n" + " free large bufs, scheme 2:\t%d\n", + fore200e->host_bsq[ BUFFER_SCHEME_ONE ][ BUFFER_MAGN_SMALL ].freebuf_count, + fore200e->host_bsq[ BUFFER_SCHEME_ONE ][ BUFFER_MAGN_LARGE ].freebuf_count, + fore200e->host_bsq[ BUFFER_SCHEME_TWO ][ BUFFER_MAGN_SMALL ].freebuf_count, + fore200e->host_bsq[ BUFFER_SCHEME_TWO ][ BUFFER_MAGN_LARGE ].freebuf_count); + + if (!left--) { + u32 hb = fore200e->bus->read(&fore200e->cp_queues->heartbeat); + + len = sprintf(page,"\n\n" + " cell processor:\n" + " heartbeat state:\t\t"); + + if (hb >> 16 != 0xDEAD) + len += sprintf(page + len, "0x%08x\n", hb); + else + len += sprintf(page + len, "*** FATAL ERROR %04x ***\n", hb & 0xFFFF); + + return len; + } + + if (!left--) { + static const char* media_name[] = { + "unshielded twisted pair", + "multimode optical fiber ST", + "multimode optical fiber SC", + "single-mode optical fiber ST", + "single-mode optical fiber SC", + "unknown" + }; + + static const char* oc3_mode[] = { + "normal operation", + "diagnostic loopback", + "line loopback", + "unknown" + }; + + u32 fw_release = fore200e->bus->read(&fore200e->cp_queues->fw_release); + u32 mon960_release = fore200e->bus->read(&fore200e->cp_queues->mon960_release); + u32 oc3_revision = fore200e->bus->read(&fore200e->cp_queues->oc3_revision); + u32 media_index = FORE200E_MEDIA_INDEX(fore200e->bus->read(&fore200e->cp_queues->media_type)); + u32 oc3_index; + + if ((media_index < 0) || (media_index > 4)) + media_index = 5; + + switch (fore200e->loop_mode) { + case ATM_LM_NONE: oc3_index = 0; + break; + case ATM_LM_LOC_PHY: oc3_index = 1; + break; + case ATM_LM_RMT_PHY: oc3_index = 2; + break; + default: oc3_index = 3; + } + + return sprintf(page, + " firmware release:\t\t%d.%d.%d\n" + " monitor release:\t\t%d.%d\n" + " media type:\t\t\t%s\n" + " OC-3 revision:\t\t0x%x\n" + " OC-3 mode:\t\t\t%s", + fw_release >> 16, fw_release << 16 >> 24, fw_release << 24 >> 24, + mon960_release >> 16, mon960_release << 16 >> 16, + media_name[ media_index ], + oc3_revision, + oc3_mode[ oc3_index ]); + } + + if (!left--) { + struct cp_monitor __iomem * cp_monitor = fore200e->cp_monitor; + + return sprintf(page, + "\n\n" + " monitor:\n" + " version number:\t\t%d\n" + " boot status word:\t\t0x%08x\n", + fore200e->bus->read(&cp_monitor->mon_version), + fore200e->bus->read(&cp_monitor->bstat)); + } + + if (!left--) + return sprintf(page, + "\n" + " device statistics:\n" + " 4b5b:\n" + " crc_header_errors:\t\t%10u\n" + " framing_errors:\t\t%10u\n", + fore200e_swap(fore200e->stats->phy.crc_header_errors), + fore200e_swap(fore200e->stats->phy.framing_errors)); + + if (!left--) + return sprintf(page, "\n" + " OC-3:\n" + " section_bip8_errors:\t%10u\n" + " path_bip8_errors:\t\t%10u\n" + " line_bip24_errors:\t\t%10u\n" + " line_febe_errors:\t\t%10u\n" + " path_febe_errors:\t\t%10u\n" + " corr_hcs_errors:\t\t%10u\n" + " ucorr_hcs_errors:\t\t%10u\n", + fore200e_swap(fore200e->stats->oc3.section_bip8_errors), + fore200e_swap(fore200e->stats->oc3.path_bip8_errors), + fore200e_swap(fore200e->stats->oc3.line_bip24_errors), + fore200e_swap(fore200e->stats->oc3.line_febe_errors), + fore200e_swap(fore200e->stats->oc3.path_febe_errors), + fore200e_swap(fore200e->stats->oc3.corr_hcs_errors), + fore200e_swap(fore200e->stats->oc3.ucorr_hcs_errors)); + + if (!left--) + return sprintf(page,"\n" + " ATM:\t\t\t\t cells\n" + " TX:\t\t\t%10u\n" + " RX:\t\t\t%10u\n" + " vpi out of range:\t\t%10u\n" + " vpi no conn:\t\t%10u\n" + " vci out of range:\t\t%10u\n" + " vci no conn:\t\t%10u\n", + fore200e_swap(fore200e->stats->atm.cells_transmitted), + fore200e_swap(fore200e->stats->atm.cells_received), + fore200e_swap(fore200e->stats->atm.vpi_bad_range), + fore200e_swap(fore200e->stats->atm.vpi_no_conn), + fore200e_swap(fore200e->stats->atm.vci_bad_range), + fore200e_swap(fore200e->stats->atm.vci_no_conn)); + + if (!left--) + return sprintf(page,"\n" + " AAL0:\t\t\t cells\n" + " TX:\t\t\t%10u\n" + " RX:\t\t\t%10u\n" + " dropped:\t\t\t%10u\n", + fore200e_swap(fore200e->stats->aal0.cells_transmitted), + fore200e_swap(fore200e->stats->aal0.cells_received), + fore200e_swap(fore200e->stats->aal0.cells_dropped)); + + if (!left--) + return sprintf(page,"\n" + " AAL3/4:\n" + " SAR sublayer:\t\t cells\n" + " TX:\t\t\t%10u\n" + " RX:\t\t\t%10u\n" + " dropped:\t\t\t%10u\n" + " CRC errors:\t\t%10u\n" + " protocol errors:\t\t%10u\n\n" + " CS sublayer:\t\t PDUs\n" + " TX:\t\t\t%10u\n" + " RX:\t\t\t%10u\n" + " dropped:\t\t\t%10u\n" + " protocol errors:\t\t%10u\n", + fore200e_swap(fore200e->stats->aal34.cells_transmitted), + fore200e_swap(fore200e->stats->aal34.cells_received), + fore200e_swap(fore200e->stats->aal34.cells_dropped), + fore200e_swap(fore200e->stats->aal34.cells_crc_errors), + fore200e_swap(fore200e->stats->aal34.cells_protocol_errors), + fore200e_swap(fore200e->stats->aal34.cspdus_transmitted), + fore200e_swap(fore200e->stats->aal34.cspdus_received), + fore200e_swap(fore200e->stats->aal34.cspdus_dropped), + fore200e_swap(fore200e->stats->aal34.cspdus_protocol_errors)); + + if (!left--) + return sprintf(page,"\n" + " AAL5:\n" + " SAR sublayer:\t\t cells\n" + " TX:\t\t\t%10u\n" + " RX:\t\t\t%10u\n" + " dropped:\t\t\t%10u\n" + " congestions:\t\t%10u\n\n" + " CS sublayer:\t\t PDUs\n" + " TX:\t\t\t%10u\n" + " RX:\t\t\t%10u\n" + " dropped:\t\t\t%10u\n" + " CRC errors:\t\t%10u\n" + " protocol errors:\t\t%10u\n", + fore200e_swap(fore200e->stats->aal5.cells_transmitted), + fore200e_swap(fore200e->stats->aal5.cells_received), + fore200e_swap(fore200e->stats->aal5.cells_dropped), + fore200e_swap(fore200e->stats->aal5.congestion_experienced), + fore200e_swap(fore200e->stats->aal5.cspdus_transmitted), + fore200e_swap(fore200e->stats->aal5.cspdus_received), + fore200e_swap(fore200e->stats->aal5.cspdus_dropped), + fore200e_swap(fore200e->stats->aal5.cspdus_crc_errors), + fore200e_swap(fore200e->stats->aal5.cspdus_protocol_errors)); + + if (!left--) + return sprintf(page,"\n" + " AUX:\t\t allocation failures\n" + " small b1:\t\t\t%10u\n" + " large b1:\t\t\t%10u\n" + " small b2:\t\t\t%10u\n" + " large b2:\t\t\t%10u\n" + " RX PDUs:\t\t\t%10u\n" + " TX PDUs:\t\t\t%10lu\n", + fore200e_swap(fore200e->stats->aux.small_b1_failed), + fore200e_swap(fore200e->stats->aux.large_b1_failed), + fore200e_swap(fore200e->stats->aux.small_b2_failed), + fore200e_swap(fore200e->stats->aux.large_b2_failed), + fore200e_swap(fore200e->stats->aux.rpd_alloc_failed), + fore200e->tx_sat); + + if (!left--) + return sprintf(page,"\n" + " receive carrier:\t\t\t%s\n", + fore200e->stats->aux.receive_carrier ? "ON" : "OFF!"); + + if (!left--) { + return sprintf(page,"\n" + " VCCs:\n address VPI VCI AAL " + "TX PDUs TX min/max size RX PDUs RX min/max size\n"); + } + + for (i = 0; i < NBR_CONNECT; i++) { + + vcc = fore200e->vc_map[i].vcc; + + if (vcc == NULL) + continue; + + spin_lock_irqsave(&fore200e->q_lock, flags); + + if (vcc && test_bit(ATM_VF_READY, &vcc->flags) && !left--) { + + fore200e_vcc = FORE200E_VCC(vcc); + ASSERT(fore200e_vcc); + + len = sprintf(page, + " %08x %03d %05d %1d %09lu %05d/%05d %09lu %05d/%05d\n", + (u32)(unsigned long)vcc, + vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal), + fore200e_vcc->tx_pdu, + fore200e_vcc->tx_min_pdu > 0xFFFF ? 0 : fore200e_vcc->tx_min_pdu, + fore200e_vcc->tx_max_pdu, + fore200e_vcc->rx_pdu, + fore200e_vcc->rx_min_pdu > 0xFFFF ? 0 : fore200e_vcc->rx_min_pdu, + fore200e_vcc->rx_max_pdu); + + spin_unlock_irqrestore(&fore200e->q_lock, flags); + return len; + } + + spin_unlock_irqrestore(&fore200e->q_lock, flags); + } + + return 0; +} + +module_init(fore200e_module_init); +module_exit(fore200e_module_cleanup); + + +static const struct atmdev_ops fore200e_ops = +{ + .open = fore200e_open, + .close = fore200e_close, + .ioctl = fore200e_ioctl, + .getsockopt = fore200e_getsockopt, + .setsockopt = fore200e_setsockopt, + .send = fore200e_send, + .change_qos = fore200e_change_qos, + .proc_read = fore200e_proc_read, + .owner = THIS_MODULE +}; + + +#ifdef CONFIG_ATM_FORE200E_PCA +extern const unsigned char _fore200e_pca_fw_data[]; +extern const unsigned int _fore200e_pca_fw_size; +#endif +#ifdef CONFIG_ATM_FORE200E_SBA +extern const unsigned char _fore200e_sba_fw_data[]; +extern const unsigned int _fore200e_sba_fw_size; +#endif + +static const struct fore200e_bus fore200e_bus[] = { +#ifdef CONFIG_ATM_FORE200E_PCA + { "PCA-200E", "pca200e", 32, 4, 32, + _fore200e_pca_fw_data, &_fore200e_pca_fw_size, + fore200e_pca_read, + fore200e_pca_write, + fore200e_pca_dma_map, + fore200e_pca_dma_unmap, + fore200e_pca_dma_sync_for_cpu, + fore200e_pca_dma_sync_for_device, + fore200e_pca_dma_chunk_alloc, + fore200e_pca_dma_chunk_free, + NULL, + fore200e_pca_configure, + fore200e_pca_map, + fore200e_pca_reset, + fore200e_pca_prom_read, + fore200e_pca_unmap, + NULL, + fore200e_pca_irq_check, + fore200e_pca_irq_ack, + fore200e_pca_proc_read, + }, +#endif +#ifdef CONFIG_ATM_FORE200E_SBA + { "SBA-200E", "sba200e", 32, 64, 32, + _fore200e_sba_fw_data, &_fore200e_sba_fw_size, + fore200e_sba_read, + fore200e_sba_write, + fore200e_sba_dma_map, + fore200e_sba_dma_unmap, + fore200e_sba_dma_sync_for_cpu, + fore200e_sba_dma_sync_for_device, + fore200e_sba_dma_chunk_alloc, + fore200e_sba_dma_chunk_free, + fore200e_sba_detect, + fore200e_sba_configure, + fore200e_sba_map, + fore200e_sba_reset, + fore200e_sba_prom_read, + fore200e_sba_unmap, + fore200e_sba_irq_enable, + fore200e_sba_irq_check, + fore200e_sba_irq_ack, + fore200e_sba_proc_read, + }, +#endif + {} +}; + +#ifdef MODULE_LICENSE +MODULE_LICENSE("GPL"); +#endif |
