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Add Error **errp for xen_pt_config_init()

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To catch the error message. Also modify the caller

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This commit is contained in:
Cao jin 2016-01-17 20:13:14 +08:00 committed by Stefano Stabellini
parent 5226bb59f7
commit d50a6e58e8
3 changed files with 33 additions and 28 deletions
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8
hw/xen/xen_pt.c
View File

@ -825,9 +825,11 @@ static int xen_pt_initfn(PCIDevice *d)
xen_pt_register_regions(s, &cmd);
/* reinitialize each config register to be emulated */
rc = xen_pt_config_init(s);
if (rc) {
XEN_PT_ERR(d, "PCI Config space initialisation failed.\n");
xen_pt_config_init(s, &err);
if (err) {
error_append_hint(&err, "PCI Config space initialisation failed");
error_report_err(err);
rc = -1;
goto err_out;
}

2
hw/xen/xen_pt.h
View File

@ -230,7 +230,7 @@ struct XenPCIPassthroughState {
bool listener_set;
};
int xen_pt_config_init(XenPCIPassthroughState *s);
void xen_pt_config_init(XenPCIPassthroughState *s, Error **errp);
void xen_pt_config_delete(XenPCIPassthroughState *s);
XenPTRegGroup *xen_pt_find_reg_grp(XenPCIPassthroughState *s, uint32_t address);
XenPTReg *xen_pt_find_reg(XenPTRegGroup *reg_grp, uint32_t address);

51
hw/xen/xen_pt_config_init.c
View File

@ -1887,8 +1887,9 @@ static uint8_t find_cap_offset(XenPCIPassthroughState *s, uint8_t cap)
return 0;
}
static int xen_pt_config_reg_init(XenPCIPassthroughState *s,
XenPTRegGroup *reg_grp, XenPTRegInfo *reg)
static void xen_pt_config_reg_init(XenPCIPassthroughState *s,
XenPTRegGroup *reg_grp, XenPTRegInfo *reg,
Error **errp)
{
XenPTReg *reg_entry;
uint32_t data = 0;
@ -1907,12 +1908,13 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s,
reg_grp->base_offset + reg->offset, &data);
if (rc < 0) {
g_free(reg_entry);
return rc;
error_setg(errp, "Init emulate register fail");
return;
}
if (data == XEN_PT_INVALID_REG) {
/* free unused BAR register entry */
g_free(reg_entry);
return 0;
return;
}
/* Sync up the data to dev.config */
offset = reg_grp->base_offset + reg->offset;
@ -1930,7 +1932,8 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s,
if (rc) {
/* Serious issues when we cannot read the host values! */
g_free(reg_entry);
return rc;
error_setg(errp, "Cannot read host values");
return;
}
/* Set bits in emu_mask are the ones we emulate. The dev.config shall
* contain the emulated view of the guest - therefore we flip the mask
@ -1955,10 +1958,10 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s,
val = data;
if (val & ~size_mask) {
XEN_PT_ERR(&s->dev,"Offset 0x%04x:0x%04x expands past register size(%d)!\n",
offset, val, reg->size);
error_setg(errp, "Offset 0x%04x:0x%04x expands past"
" register size (%d)", offset, val, reg->size);
g_free(reg_entry);
return -ENXIO;
return;
}
/* This could be just pci_set_long as we don't modify the bits
* past reg->size, but in case this routine is run in parallel or the
@ -1978,13 +1981,12 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s,
}
/* list add register entry */
QLIST_INSERT_HEAD(&reg_grp->reg_tbl_list, reg_entry, entries);
return 0;
}
int xen_pt_config_init(XenPCIPassthroughState *s)
void xen_pt_config_init(XenPCIPassthroughState *s, Error **errp)
{
int i, rc;
Error *err = NULL;
QLIST_INIT(&s->reg_grps);
@ -2027,11 +2029,12 @@ int xen_pt_config_init(XenPCIPassthroughState *s)
reg_grp_offset,
&reg_grp_entry->size);
if (rc < 0) {
XEN_PT_LOG(&s->dev, "Failed to initialize %d/%ld, type=0x%x, rc:%d\n",
i, ARRAY_SIZE(xen_pt_emu_reg_grps),
error_setg(&err, "Failed to initialize %d/%zu, type = 0x%x,"
" rc: %d", i, ARRAY_SIZE(xen_pt_emu_reg_grps),
xen_pt_emu_reg_grps[i].grp_type, rc);
error_propagate(errp, err);
xen_pt_config_delete(s);
return rc;
return;
}
}
@ -2039,24 +2042,24 @@ int xen_pt_config_init(XenPCIPassthroughState *s)
if (xen_pt_emu_reg_grps[i].emu_regs) {
int j = 0;
XenPTRegInfo *regs = xen_pt_emu_reg_grps[i].emu_regs;
/* initialize capability register */
for (j = 0; regs->size != 0; j++, regs++) {
/* initialize capability register */
rc = xen_pt_config_reg_init(s, reg_grp_entry, regs);
if (rc < 0) {
XEN_PT_LOG(&s->dev, "Failed to initialize %d/%ld reg 0x%x in grp_type=0x%x (%d/%ld), rc=%d\n",
j, ARRAY_SIZE(xen_pt_emu_reg_grps[i].emu_regs),
regs->offset, xen_pt_emu_reg_grps[i].grp_type,
i, ARRAY_SIZE(xen_pt_emu_reg_grps), rc);
xen_pt_config_reg_init(s, reg_grp_entry, regs, &err);
if (err) {
error_append_hint(&err, "Failed to initialize %d/%zu"
" reg 0x%x in grp_type = 0x%x (%d/%zu)",
j, ARRAY_SIZE(xen_pt_emu_reg_grps[i].emu_regs),
regs->offset, xen_pt_emu_reg_grps[i].grp_type,
i, ARRAY_SIZE(xen_pt_emu_reg_grps));
error_propagate(errp, err);
xen_pt_config_delete(s);
return rc;
return;
}
}
}
}
}
return 0;
}
/* delete all emulate register */