c5b309ff07
Main changes: - COW optimization for safecopy. - safemap, a grant-based interface for sharing memory regions between processes. - Integration with safemap and complete rework of DS, supporting new data types natively (labels, memory ranges, memory mapped ranges). - For further information: http://wiki.minix3.org/en/SummerOfCode2009/MemoryGrants Additional changes not included in the original Wu's branch: - Fixed unhandled case in VM when using COW optimization for safecopy in case of a block that has already been shared as SMAP. - Better interface and naming scheme for sys_saferevmap and ds_retrieve_map calls. - Better input checking in syslib: check for page alignment when creating memory mapping grants. - DS notifies subscribers when an entry is deleted. - Documented the behavior of indirect grants in case of memory mapping. - Test suite in /usr/src/test/safeperf|safecopy|safemap|ds/* reworked and extended. - Minor fixes and general cleanup. - TO-DO: Grant ids should be generated and managed the way endpoints are to make sure grant slots are never misreused.
47 lines
1,000 B
C
47 lines
1,000 B
C
/*
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pci_init1.c
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*/
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#include "pci.h"
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#include "syslib.h"
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#include <string.h>
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#include <unistd.h>
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#include <minix/ds.h>
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#include <minix/sysutil.h>
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int pci_procnr= ANY;
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/*===========================================================================*
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* pci_init1 *
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*===========================================================================*/
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PUBLIC void pci_init1(name)
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char *name;
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{
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int r;
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u32_t u32;
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size_t len;
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message m;
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r= ds_retrieve_label_num("pci", &u32);
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if (r != 0)
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panic("syslib/" __FILE__, "pci_init1: ds_retrieve_label_num failed for 'pci'", r);
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pci_procnr= u32;
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m.m_type= BUSC_PCI_INIT;
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len= strlen(name);
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if (len+1 <= sizeof(m.m3_ca1))
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strcpy(m.m3_ca1, name);
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else
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{
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len= sizeof(m.m3_ca1)-1;
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memcpy(m.m3_ca1, name, len);
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m.m3_ca1[len]= '\0';
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}
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r= sendrec(pci_procnr, &m);
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if (r != 0)
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panic("syslib/" __FILE__, "pci_init1: can't talk to PCI", r);
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if (m.m_type != 0)
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panic("syslib/" __FILE__, "pci_init1: got bad reply from PCI", m.m_type);
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}
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