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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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add09d61fe
Use the __get_free_pages wrapper in clp_alloc_block. Also change the allocation to use one page only. This page is used as CLP response block e.g. to list available pci functions. Using one page we can list > 250 pci functions at once and we have code to loop around this CLP command (if not all functions fit into to the CLP block) already in place. Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
29 lines
827 B
C
29 lines
827 B
C
#ifndef _ASM_S390_CLP_H
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#define _ASM_S390_CLP_H
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/* CLP common request & response block size */
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#define CLP_BLK_SIZE PAGE_SIZE
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struct clp_req_hdr {
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u16 len;
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u16 cmd;
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} __packed;
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struct clp_rsp_hdr {
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u16 len;
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u16 rsp;
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} __packed;
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/* CLP Response Codes */
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#define CLP_RC_OK 0x0010 /* Command request successfully */
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#define CLP_RC_CMD 0x0020 /* Command code not recognized */
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#define CLP_RC_PERM 0x0030 /* Command not authorized */
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#define CLP_RC_FMT 0x0040 /* Invalid command request format */
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#define CLP_RC_LEN 0x0050 /* Invalid command request length */
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#define CLP_RC_8K 0x0060 /* Command requires 8K LPCB */
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#define CLP_RC_RESNOT0 0x0070 /* Reserved field not zero */
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#define CLP_RC_NODATA 0x0080 /* No data available */
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#define CLP_RC_FC_UNKNOWN 0x0100 /* Function code not recognized */
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#endif
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