mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
1f8bdae9ef
Free sent skbs in some finite amount of time. Affected are asynchronous queue of Hipersockets devices and the output queues of all eth-devices respectively. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
403 lines
13 KiB
C
403 lines
13 KiB
C
/*
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* linux/include/asm-s390/qdio.h
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*
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* Linux for S/390 QDIO base support, Hipersocket base support
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* version 2
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*
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* Copyright 2000,2002 IBM Corporation
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* Author(s): Utz Bacher <utz.bacher@de.ibm.com>
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*
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*/
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#ifndef __QDIO_H__
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#define __QDIO_H__
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/* note, that most of the typedef's are from ingo. */
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#include <linux/interrupt.h>
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#include <asm/cio.h>
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#include <asm/ccwdev.h>
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#define QDIO_NAME "qdio "
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#ifndef __s390x__
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#define QDIO_32_BIT
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#endif /* __s390x__ */
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/**** CONSTANTS, that are relied on without using these symbols *****/
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#define QDIO_MAX_QUEUES_PER_IRQ 32 /* used in width of unsigned int */
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/************************ END of CONSTANTS **************************/
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#define QDIO_MAX_BUFFERS_PER_Q 128 /* must be a power of 2 (%x=&(x-1)*/
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#define QDIO_BUF_ORDER 7 /* 2**this == number of pages used for sbals in 1 q */
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#define QDIO_MAX_ELEMENTS_PER_BUFFER 16
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#define SBAL_SIZE 256
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#define QDIO_QETH_QFMT 0
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#define QDIO_ZFCP_QFMT 1
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#define QDIO_IQDIO_QFMT 2
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#define QDIO_IQDIO_QFMT_ASYNCH 3
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struct qdio_buffer_element{
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unsigned int flags;
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unsigned int length;
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#ifdef QDIO_32_BIT
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void *reserved;
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#endif /* QDIO_32_BIT */
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void *addr;
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} __attribute__ ((packed,aligned(16)));
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struct qdio_buffer{
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volatile struct qdio_buffer_element element[16];
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} __attribute__ ((packed,aligned(256)));
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/* params are: ccw_device, status, qdio_error, siga_error,
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queue_number, first element processed, number of elements processed,
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int_parm */
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typedef void qdio_handler_t(struct ccw_device *,unsigned int,unsigned int,
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unsigned int,unsigned int,int,int,unsigned long);
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#define QDIO_STATUS_INBOUND_INT 0x01
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#define QDIO_STATUS_OUTBOUND_INT 0x02
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#define QDIO_STATUS_LOOK_FOR_ERROR 0x04
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#define QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR 0x08
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#define QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR 0x10
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#define QDIO_STATUS_ACTIVATE_CHECK_CONDITION 0x20
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#define QDIO_SIGA_ERROR_ACCESS_EXCEPTION 0x10
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#define QDIO_SIGA_ERROR_B_BIT_SET 0x20
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/* for qdio_initialize */
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#define QDIO_INBOUND_0COPY_SBALS 0x01
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#define QDIO_OUTBOUND_0COPY_SBALS 0x02
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#define QDIO_USE_OUTBOUND_PCIS 0x04
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/* for qdio_cleanup */
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#define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01
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#define QDIO_FLAG_CLEANUP_USING_HALT 0x02
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struct qdio_initialize {
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struct ccw_device *cdev;
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unsigned char q_format;
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unsigned char adapter_name[8];
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unsigned int qib_param_field_format; /*adapter dependent*/
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/* pointer to 128 bytes or NULL, if no param field */
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unsigned char *qib_param_field; /* adapter dependent */
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/* pointer to no_queues*128 words of data or NULL */
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unsigned long *input_slib_elements;
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unsigned long *output_slib_elements;
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unsigned int min_input_threshold;
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unsigned int max_input_threshold;
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unsigned int min_output_threshold;
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unsigned int max_output_threshold;
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unsigned int no_input_qs;
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unsigned int no_output_qs;
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qdio_handler_t *input_handler;
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qdio_handler_t *output_handler;
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unsigned long int_parm;
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unsigned long flags;
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void **input_sbal_addr_array; /* addr of n*128 void ptrs */
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void **output_sbal_addr_array; /* addr of n*128 void ptrs */
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};
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extern int qdio_initialize(struct qdio_initialize *init_data);
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extern int qdio_allocate(struct qdio_initialize *init_data);
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extern int qdio_establish(struct qdio_initialize *init_data);
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extern int qdio_activate(struct ccw_device *,int flags);
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#define QDIO_STATE_MUST_USE_OUTB_PCI 0x00000001
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#define QDIO_STATE_INACTIVE 0x00000002 /* after qdio_cleanup */
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#define QDIO_STATE_ESTABLISHED 0x00000004 /* after qdio_initialize */
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#define QDIO_STATE_ACTIVE 0x00000008 /* after qdio_activate */
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#define QDIO_STATE_STOPPED 0x00000010 /* after queues went down */
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extern unsigned long qdio_get_status(int irq);
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#define QDIO_FLAG_SYNC_INPUT 0x01
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#define QDIO_FLAG_SYNC_OUTPUT 0x02
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#define QDIO_FLAG_UNDER_INTERRUPT 0x04
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#define QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT 0x08 /* no effect on
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adapter interrupts */
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#define QDIO_FLAG_DONT_SIGA 0x10
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#define QDIO_FLAG_PCI_OUT 0x20
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extern int do_QDIO(struct ccw_device*, unsigned int flags,
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unsigned int queue_number,
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unsigned int qidx,unsigned int count,
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struct qdio_buffer *buffers);
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extern int qdio_synchronize(struct ccw_device*, unsigned int flags,
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unsigned int queue_number);
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extern int qdio_cleanup(struct ccw_device*, int how);
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extern int qdio_shutdown(struct ccw_device*, int how);
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extern int qdio_free(struct ccw_device*);
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unsigned char qdio_get_slsb_state(struct ccw_device*, unsigned int flag,
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unsigned int queue_number,
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unsigned int qidx);
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extern void qdio_init_scrubber(void);
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struct qdesfmt0 {
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#ifdef QDIO_32_BIT
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unsigned long res1; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long sliba; /* storage-list-information-block
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address */
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#ifdef QDIO_32_BIT
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unsigned long res2; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long sla; /* storage-list address */
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#ifdef QDIO_32_BIT
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unsigned long res3; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long slsba; /* storage-list-state-block address */
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unsigned int res4; /* reserved */
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unsigned int akey : 4; /* access key for DLIB */
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unsigned int bkey : 4; /* access key for SL */
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unsigned int ckey : 4; /* access key for SBALs */
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unsigned int dkey : 4; /* access key for SLSB */
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unsigned int res5 : 16; /* reserved */
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} __attribute__ ((packed));
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/*
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* Queue-Description record (QDR)
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*/
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struct qdr {
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unsigned int qfmt : 8; /* queue format */
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unsigned int pfmt : 8; /* impl. dep. parameter format */
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unsigned int res1 : 8; /* reserved */
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unsigned int ac : 8; /* adapter characteristics */
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unsigned int res2 : 8; /* reserved */
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unsigned int iqdcnt : 8; /* input-queue-descriptor count */
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unsigned int res3 : 8; /* reserved */
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unsigned int oqdcnt : 8; /* output-queue-descriptor count */
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unsigned int res4 : 8; /* reserved */
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unsigned int iqdsz : 8; /* input-queue-descriptor size */
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unsigned int res5 : 8; /* reserved */
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unsigned int oqdsz : 8; /* output-queue-descriptor size */
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unsigned int res6[9]; /* reserved */
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#ifdef QDIO_32_BIT
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unsigned long res7; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long qiba; /* queue-information-block address */
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unsigned int res8; /* reserved */
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unsigned int qkey : 4; /* queue-informatio-block key */
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unsigned int res9 : 28; /* reserved */
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/* union _qd {*/ /* why this? */
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struct qdesfmt0 qdf0[126];
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/* } qd;*/
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} __attribute__ ((packed,aligned(4096)));
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/*
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* queue information block (QIB)
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*/
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#define QIB_AC_INBOUND_PCI_SUPPORTED 0x80
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#define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40
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#define QIB_RFLAGS_ENABLE_QEBSM 0x80
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struct qib {
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unsigned int qfmt : 8; /* queue format */
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unsigned int pfmt : 8; /* impl. dep. parameter format */
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unsigned int rflags : 8; /* QEBSM */
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unsigned int ac : 8; /* adapter characteristics */
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unsigned int res2; /* reserved */
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#ifdef QDIO_32_BIT
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unsigned long res3; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long isliba; /* absolute address of 1st
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input SLIB */
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#ifdef QDIO_32_BIT
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unsigned long res4; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long osliba; /* absolute address of 1st
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output SLIB */
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unsigned int res5; /* reserved */
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unsigned int res6; /* reserved */
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unsigned char ebcnam[8]; /* adapter identifier in EBCDIC */
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unsigned char res7[88]; /* reserved */
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unsigned char parm[QDIO_MAX_BUFFERS_PER_Q];
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/* implementation dependent
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parameters */
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} __attribute__ ((packed,aligned(256)));
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/*
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* storage-list-information block element (SLIBE)
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*/
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struct slibe {
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#ifdef QDIO_32_BIT
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unsigned long res; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long parms; /* implementation dependent
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parameters */
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};
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/*
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* storage-list-information block (SLIB)
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*/
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struct slib {
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#ifdef QDIO_32_BIT
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unsigned long res1; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long nsliba; /* next SLIB address (if any) */
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#ifdef QDIO_32_BIT
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unsigned long res2; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long sla; /* SL address */
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#ifdef QDIO_32_BIT
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unsigned long res3; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long slsba; /* SLSB address */
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unsigned char res4[1000]; /* reserved */
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struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q]; /* SLIB elements */
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} __attribute__ ((packed,aligned(2048)));
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struct sbal_flags {
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unsigned char res1 : 1; /* reserved */
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unsigned char last : 1; /* last entry */
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unsigned char cont : 1; /* contiguous storage */
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unsigned char res2 : 1; /* reserved */
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unsigned char frag : 2; /* fragmentation (s.below) */
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unsigned char res3 : 2; /* reserved */
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} __attribute__ ((packed));
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#define SBAL_FLAGS_FIRST_FRAG 0x04000000UL
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#define SBAL_FLAGS_MIDDLE_FRAG 0x08000000UL
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#define SBAL_FLAGS_LAST_FRAG 0x0c000000UL
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#define SBAL_FLAGS_LAST_ENTRY 0x40000000UL
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#define SBAL_FLAGS_CONTIGUOUS 0x20000000UL
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#define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL
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/* Awesome OpenFCP extensions */
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#define SBAL_FLAGS0_TYPE_STATUS 0x00UL
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#define SBAL_FLAGS0_TYPE_WRITE 0x08UL
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#define SBAL_FLAGS0_TYPE_READ 0x10UL
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#define SBAL_FLAGS0_TYPE_WRITE_READ 0x18UL
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#define SBAL_FLAGS0_MORE_SBALS 0x04UL
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#define SBAL_FLAGS0_COMMAND 0x02UL
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#define SBAL_FLAGS0_LAST_SBAL 0x00UL
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#define SBAL_FLAGS0_ONLY_SBAL SBAL_FLAGS0_COMMAND
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#define SBAL_FLAGS0_MIDDLE_SBAL SBAL_FLAGS0_MORE_SBALS
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#define SBAL_FLAGS0_FIRST_SBAL SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND
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/* Naught of interest beyond this point */
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#define SBAL_FLAGS0_PCI 0x40
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struct sbal_sbalf_0 {
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unsigned char res1 : 1; /* reserved */
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unsigned char pci : 1; /* PCI indicator */
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unsigned char cont : 1; /* data continuation */
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unsigned char sbtype: 2; /* storage-block type (OpenFCP) */
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unsigned char res2 : 3; /* reserved */
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} __attribute__ ((packed));
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struct sbal_sbalf_1 {
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unsigned char res1 : 4; /* reserved */
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unsigned char key : 4; /* storage key */
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} __attribute__ ((packed));
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struct sbal_sbalf_14 {
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unsigned char res1 : 4; /* reserved */
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unsigned char erridx : 4; /* error index */
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} __attribute__ ((packed));
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struct sbal_sbalf_15 {
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unsigned char reason; /* reserved */
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} __attribute__ ((packed));
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union sbal_sbalf {
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struct sbal_sbalf_0 i0;
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struct sbal_sbalf_1 i1;
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struct sbal_sbalf_14 i14;
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struct sbal_sbalf_15 i15;
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unsigned char value;
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};
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struct sbal_element {
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union {
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struct sbal_flags bits; /* flags */
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unsigned char value;
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} flags;
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unsigned int res1 : 16; /* reserved */
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union sbal_sbalf sbalf; /* SBAL flags */
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unsigned int res2 : 16; /* reserved */
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unsigned int count : 16; /* data count */
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#ifdef QDIO_32_BIT
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unsigned long res3; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long addr; /* absolute data address */
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} __attribute__ ((packed,aligned(16)));
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/*
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* strorage-block access-list (SBAL)
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*/
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struct sbal {
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struct sbal_element element[QDIO_MAX_ELEMENTS_PER_BUFFER];
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} __attribute__ ((packed,aligned(256)));
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/*
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* storage-list (SL)
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*/
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struct sl_element {
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#ifdef QDIO_32_BIT
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unsigned long res; /* reserved */
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#endif /* QDIO_32_BIT */
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unsigned long sbal; /* absolute SBAL address */
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} __attribute__ ((packed));
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struct sl {
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struct sl_element element[QDIO_MAX_BUFFERS_PER_Q];
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} __attribute__ ((packed,aligned(1024)));
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/*
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* storage-list-state block (SLSB)
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*/
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struct slsb_flags {
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unsigned char owner : 2; /* SBAL owner */
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unsigned char type : 1; /* buffer type */
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unsigned char state : 5; /* processing state */
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} __attribute__ ((packed));
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struct slsb {
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union {
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unsigned char val[QDIO_MAX_BUFFERS_PER_Q];
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struct slsb_flags flags[QDIO_MAX_BUFFERS_PER_Q];
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} acc;
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} __attribute__ ((packed,aligned(256)));
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/*
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* SLSB values
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*/
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#define SLSB_OWNER_PROG 1
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#define SLSB_OWNER_CU 2
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#define SLSB_TYPE_INPUT 0
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#define SLSB_TYPE_OUTPUT 1
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#define SLSB_STATE_NOT_INIT 0
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#define SLSB_STATE_EMPTY 1
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#define SLSB_STATE_PRIMED 2
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#define SLSB_STATE_HALTED 0xe
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#define SLSB_STATE_ERROR 0xf
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#define SLSB_P_INPUT_NOT_INIT 0x80
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#define SLSB_P_INPUT_PROCESSING 0x81
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#define SLSB_CU_INPUT_EMPTY 0x41
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#define SLSB_P_INPUT_PRIMED 0x82
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#define SLSB_P_INPUT_HALTED 0x8E
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#define SLSB_P_INPUT_ERROR 0x8F
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#define SLSB_P_OUTPUT_NOT_INIT 0xA0
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#define SLSB_P_OUTPUT_EMPTY 0xA1
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#define SLSB_CU_OUTPUT_PRIMED 0x62
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#define SLSB_P_OUTPUT_HALTED 0xAE
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#define SLSB_P_OUTPUT_ERROR 0xAF
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#define SLSB_ERROR_DURING_LOOKUP 0xFF
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#endif /* __QDIO_H__ */
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