diff options
Diffstat (limited to 'drivers/atm/he.h')
| -rw-r--r-- | drivers/atm/he.h | 91 |
1 files changed, 25 insertions, 66 deletions
diff --git a/drivers/atm/he.h b/drivers/atm/he.h index b87d6ccabac..110a27d2ecf 100644 --- a/drivers/atm/he.h +++ b/drivers/atm/he.h @@ -51,8 +51,6 @@ #define CONFIG_IRQ_SIZE 128 #define CONFIG_IRQ_THRESH (CONFIG_IRQ_SIZE/2) -#define CONFIG_NUMTPDS 256 - #define CONFIG_TPDRQ_SIZE 512 #define TPDRQ_MASK(x) (((unsigned long)(x))&((CONFIG_TPDRQ_SIZE<<3)-1)) @@ -69,11 +67,6 @@ #define CONFIG_RBPL_BUFSIZE 4096 #define RBPL_MASK(x) (((unsigned long)(x))&((CONFIG_RBPL_SIZE<<3)-1)) -#define CONFIG_RBPS_SIZE 1024 -#define CONFIG_RBPS_THRESH 64 -#define CONFIG_RBPS_BUFSIZE 128 -#define RBPS_MASK(x) (((unsigned long)(x))&((CONFIG_RBPS_SIZE<<3)-1)) - /* 5.1.3 initialize connection memory */ #define CONFIG_RSRA 0x00000 @@ -140,12 +133,7 @@ struct he_tpd { struct sk_buff *skb; struct atm_vcc *vcc; -#ifdef USE_TPD_POOL struct list_head entry; -#else - u32 inuse; - char padding[32 - sizeof(u32) - (2*sizeof(void*))]; -#endif }; #define TPD_ALIGNMENT 64 @@ -210,36 +198,37 @@ struct he_hsp { } group[HE_NUM_GROUPS]; }; -/* figure 2.9 receive buffer pools */ +/* + * figure 2.9 receive buffer pools + * + * since a virtual address might be more than 32 bits, we store an index + * in the virt member of he_rbp. NOTE: the lower six bits in the rbrq + * addr member are used for buffer status further limiting us to 26 bits. + */ struct he_rbp { volatile u32 phys; - volatile u32 status; + volatile u32 idx; /* virt */ }; -/* NOTE: it is suggested that virt be the virtual address of the host - buffer. on a 64-bit machine, this would not work. Instead, we - store the real virtual address in another list, and store an index - (and buffer status) in the virt member. -*/ +#define RBP_IDX_OFFSET 6 + +/* + * the he dma engine will try to hold an extra 16 buffers in its local + * caches. and add a couple buffers for safety. + */ -#define RBP_INDEX_OFF 6 -#define RBP_INDEX(x) (((long)(x) >> RBP_INDEX_OFF) & 0xffff) -#define RBP_LOANED 0x80000000 -#define RBP_SMALLBUF 0x40000000 +#define RBPL_TABLE_SIZE (CONFIG_RBPL_SIZE + 16 + 2) -struct he_virt { - void *virt; +struct he_buff { + struct list_head entry; + dma_addr_t mapping; + unsigned long len; + u8 data[]; }; -#define RBPL_ALIGNMENT CONFIG_RBPL_SIZE -#define RBPS_ALIGNMENT CONFIG_RBPS_SIZE - #ifdef notyet struct he_group { - u32 rpbs_size, rpbs_qsize; - struct he_rbp rbps_ba; - u32 rpbl_size, rpbl_qsize; struct he_rpb_entry *rbpl_ba; }; @@ -291,16 +280,9 @@ struct he_dev { volatile unsigned *irq_tailoffset; int irq_peak; -#ifdef USE_TASKLET struct tasklet_struct tasklet; -#endif -#ifdef USE_TPD_POOL struct pci_pool *tpd_pool; struct list_head outstanding_tpds; -#else - struct he_tpd *tpd_head, *tpd_base, *tpd_end; - dma_addr_t tpd_base_phys; -#endif dma_addr_t tpdrq_phys; struct he_tpdrq *tpdrq_base, *tpdrq_tail, *tpdrq_head; @@ -311,30 +293,15 @@ struct he_dev { struct he_rbrq *rbrq_base, *rbrq_head; int rbrq_peak; -#ifdef USE_RBPL_POOL + struct he_buff **rbpl_virt; + unsigned long *rbpl_table; + unsigned long rbpl_hint; struct pci_pool *rbpl_pool; -#else - void *rbpl_pages; - dma_addr_t rbpl_pages_phys; -#endif dma_addr_t rbpl_phys; struct he_rbp *rbpl_base, *rbpl_tail; - struct he_virt *rbpl_virt; + struct list_head rbpl_outstanding; int rbpl_peak; -#ifdef USE_RBPS -#ifdef USE_RBPS_POOL - struct pci_pool *rbps_pool; -#else - void *rbps_pages; - dma_addr_t rbps_pages_phys; -#endif -#endif - dma_addr_t rbps_phys; - struct he_rbp *rbps_base, *rbps_tail; - struct he_virt *rbps_virt; - int rbps_peak; - dma_addr_t tbrq_phys; struct he_tbrq *tbrq_base, *tbrq_head; int tbrq_peak; @@ -347,20 +314,12 @@ struct he_dev { struct he_dev *next; }; -struct he_iovec -{ - u32 iov_base; - u32 iov_len; -}; - #define HE_MAXIOV 20 struct he_vcc { - struct he_iovec iov_head[HE_MAXIOV]; - struct he_iovec *iov_tail; + struct list_head buffers; int pdu_len; - int rc_index; wait_queue_head_t rx_waitq; |