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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/atm/eni.h
downloadlinux-stericsson-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/atm/eni.h')
-rw-r--r--drivers/atm/eni.h130
1 files changed, 130 insertions, 0 deletions
diff --git a/drivers/atm/eni.h b/drivers/atm/eni.h
new file mode 100644
index 000000000000..385090c2a580
--- /dev/null
+++ b/drivers/atm/eni.h
@@ -0,0 +1,130 @@
+/* drivers/atm/eni.h - Efficient Networks ENI155P device driver declarations */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#ifndef DRIVER_ATM_ENI_H
+#define DRIVER_ATM_ENI_H
+
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/sonet.h>
+#include <linux/skbuff.h>
+#include <linux/time.h>
+#include <linux/pci.h>
+#include <linux/spinlock.h>
+#include <asm/atomic.h>
+
+#include "midway.h"
+
+
+#define KERNEL_OFFSET 0xC0000000 /* kernel 0x0 is at phys 0xC0000000 */
+#define DEV_LABEL "eni"
+
+#define UBR_BUFFER (128*1024) /* UBR buffer size */
+
+#define RX_DMA_BUF 8 /* burst and skip a few things */
+#define TX_DMA_BUF 100 /* should be enough for 64 kB */
+
+#define DEFAULT_RX_MULT 300 /* max_sdu*3 */
+#define DEFAULT_TX_MULT 300 /* max_sdu*3 */
+
+#define ENI_ZEROES_SIZE 4 /* need that many DMA-able zero bytes */
+
+
+struct eni_free {
+ void __iomem *start; /* counting in bytes */
+ int order;
+};
+
+struct eni_tx {
+ void __iomem *send; /* base, 0 if unused */
+ int prescaler; /* shaping prescaler */
+ int resolution; /* shaping divider */
+ unsigned long tx_pos; /* current TX write position */
+ unsigned long words; /* size of TX queue */
+ int index; /* TX channel number */
+ int reserved; /* reserved peak cell rate */
+ int shaping; /* shaped peak cell rate */
+ struct sk_buff_head backlog; /* queue of waiting TX buffers */
+};
+
+struct eni_vcc {
+ int (*rx)(struct atm_vcc *vcc); /* RX function, NULL if none */
+ void __iomem *recv; /* receive buffer */
+ unsigned long words; /* its size in words */
+ unsigned long descr; /* next descriptor (RX) */
+ unsigned long rx_pos; /* current RX descriptor pos */
+ struct eni_tx *tx; /* TXer, NULL if none */
+ int rxing; /* number of pending PDUs */
+ int servicing; /* number of waiting VCs (0 or 1) */
+ int txing; /* number of pending TX bytes */
+ struct timeval timestamp; /* for RX timing */
+ struct atm_vcc *next; /* next pending RX */
+ struct sk_buff *last; /* last PDU being DMAed (used to carry
+ discard information) */
+};
+
+struct eni_dev {
+ /*-------------------------------- spinlock */
+ spinlock_t lock; /* sync with interrupt */
+ struct tasklet_struct task; /* tasklet for interrupt work */
+ u32 events; /* pending events */
+ /*-------------------------------- base pointers into Midway address
+ space */
+ void __iomem *phy; /* PHY interface chip registers */
+ void __iomem *reg; /* register base */
+ void __iomem *ram; /* RAM base */
+ void __iomem *vci; /* VCI table */
+ void __iomem *rx_dma; /* RX DMA queue */
+ void __iomem *tx_dma; /* TX DMA queue */
+ void __iomem *service; /* service list */
+ /*-------------------------------- TX part */
+ struct eni_tx tx[NR_CHAN]; /* TX channels */
+ struct eni_tx *ubr; /* UBR channel */
+ struct sk_buff_head tx_queue; /* PDUs currently being TX DMAed*/
+ wait_queue_head_t tx_wait; /* for close */
+ int tx_bw; /* remaining bandwidth */
+ u32 dma[TX_DMA_BUF*2]; /* DMA request scratch area */
+ int tx_mult; /* buffer size multiplier (percent) */
+ /*-------------------------------- RX part */
+ u32 serv_read; /* host service read index */
+ struct atm_vcc *fast,*last_fast;/* queues of VCCs with pending PDUs */
+ struct atm_vcc *slow,*last_slow;
+ struct atm_vcc **rx_map; /* for fast lookups */
+ struct sk_buff_head rx_queue; /* PDUs currently being RX-DMAed */
+ wait_queue_head_t rx_wait; /* for close */
+ int rx_mult; /* buffer size multiplier (percent) */
+ /*-------------------------------- statistics */
+ unsigned long lost; /* number of lost cells (RX) */
+ /*-------------------------------- memory management */
+ unsigned long base_diff; /* virtual-real base address */
+ int free_len; /* free list length */
+ struct eni_free *free_list; /* free list */
+ int free_list_size; /* maximum size of free list */
+ /*-------------------------------- ENI links */
+ struct atm_dev *more; /* other ENI devices */
+ /*-------------------------------- general information */
+ int mem; /* RAM on board (in bytes) */
+ int asic; /* PCI interface type, 0 for FPGA */
+ unsigned int irq; /* IRQ */
+ struct pci_dev *pci_dev; /* PCI stuff */
+};
+
+
+#define ENI_DEV(d) ((struct eni_dev *) (d)->dev_data)
+#define ENI_VCC(d) ((struct eni_vcc *) (d)->dev_data)
+
+
+struct eni_skb_prv {
+ struct atm_skb_data _; /* reserved */
+ unsigned long pos; /* position of next descriptor */
+ int size; /* PDU size in reassembly buffer */
+ dma_addr_t paddr; /* DMA handle */
+};
+
+#define ENI_PRV_SIZE(skb) (((struct eni_skb_prv *) (skb)->cb)->size)
+#define ENI_PRV_POS(skb) (((struct eni_skb_prv *) (skb)->cb)->pos)
+#define ENI_PRV_PADDR(skb) (((struct eni_skb_prv *) (skb)->cb)->paddr)
+
+#endif