haraldwolff/qemu-patch-raspberry4
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vmw_pvscsi: use PCI DMA APIs

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It is wrong to use address_space_memory directly, because there could be an
IOMMU in the middle.  Passing the entire PVSCSIRingInfo to RS_GET_FIELD
and RS_SET_FIELD makes it easy to go back to the PVSCSIState.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2015-03-23 17:28:13 +01:00
parent 16578c6ffe
commit 0dc40f2851
1 changed files with 21 additions and 21 deletions
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42
hw/scsi/vmw_pvscsi.c
View file

@ -42,12 +42,12 @@
#define PVSCSI_MAX_CMD_DATA_WORDS \
(sizeof(PVSCSICmdDescSetupRings)/sizeof(uint32_t))
#define RS_GET_FIELD(rs_pa, field) \
(ldl_le_phys(&address_space_memory, \
rs_pa + offsetof(struct PVSCSIRingsState, field)))
#define RS_SET_FIELD(rs_pa, field, val) \
(stl_le_phys(&address_space_memory, \
rs_pa + offsetof(struct PVSCSIRingsState, field), val))
#define RS_GET_FIELD(m, field) \
(ldl_le_pci_dma(&container_of(m, PVSCSIState, rings)->parent_obj, \
(m)->rs_pa + offsetof(struct PVSCSIRingsState, field)))
#define RS_SET_FIELD(m, field, val) \
(stl_le_pci_dma(&container_of(m, PVSCSIState, rings)->parent_obj, \
(m)->rs_pa + offsetof(struct PVSCSIRingsState, field), val))
#define TYPE_PVSCSI "pvscsi"
#define PVSCSI(obj) OBJECT_CHECK(PVSCSIState, (obj), TYPE_PVSCSI)
@ -153,13 +153,13 @@ pvscsi_ring_init_data(PVSCSIRingInfo *m, PVSCSICmdDescSetupRings *ri)
m->cmp_ring_pages_pa[i] = ri->cmpRingPPNs[i] << VMW_PAGE_SHIFT;
}
RS_SET_FIELD(m->rs_pa, reqProdIdx, 0);
RS_SET_FIELD(m->rs_pa, reqConsIdx, 0);
RS_SET_FIELD(m->rs_pa, reqNumEntriesLog2, txr_len_log2);
RS_SET_FIELD(m, reqProdIdx, 0);
RS_SET_FIELD(m, reqConsIdx, 0);
RS_SET_FIELD(m, reqNumEntriesLog2, txr_len_log2);
RS_SET_FIELD(m->rs_pa, cmpProdIdx, 0);
RS_SET_FIELD(m->rs_pa, cmpConsIdx, 0);
RS_SET_FIELD(m->rs_pa, cmpNumEntriesLog2, rxr_len_log2);
RS_SET_FIELD(m, cmpProdIdx, 0);
RS_SET_FIELD(m, cmpConsIdx, 0);
RS_SET_FIELD(m, cmpNumEntriesLog2, rxr_len_log2);
trace_pvscsi_ring_init_data(txr_len_log2, rxr_len_log2);
@ -185,9 +185,9 @@ pvscsi_ring_init_msg(PVSCSIRingInfo *m, PVSCSICmdDescSetupMsgRing *ri)
m->msg_ring_pages_pa[i] = ri->ringPPNs[i] << VMW_PAGE_SHIFT;
}
RS_SET_FIELD(m->rs_pa, msgProdIdx, 0);
RS_SET_FIELD(m->rs_pa, msgConsIdx, 0);
RS_SET_FIELD(m->rs_pa, msgNumEntriesLog2, len_log2);
RS_SET_FIELD(m, msgProdIdx, 0);
RS_SET_FIELD(m, msgConsIdx, 0);
RS_SET_FIELD(m, msgNumEntriesLog2, len_log2);
trace_pvscsi_ring_init_msg(len_log2);
@ -213,7 +213,7 @@ pvscsi_ring_cleanup(PVSCSIRingInfo *mgr)
static hwaddr
pvscsi_ring_pop_req_descr(PVSCSIRingInfo *mgr)
{
uint32_t ready_ptr = RS_GET_FIELD(mgr->rs_pa, reqProdIdx);
uint32_t ready_ptr = RS_GET_FIELD(mgr, reqProdIdx);
if (ready_ptr != mgr->consumed_ptr) {
uint32_t next_ready_ptr =
@ -233,7 +233,7 @@ pvscsi_ring_pop_req_descr(PVSCSIRingInfo *mgr)
static void
pvscsi_ring_flush_req(PVSCSIRingInfo *mgr)
{
RS_SET_FIELD(mgr->rs_pa, reqConsIdx, mgr->consumed_ptr);
RS_SET_FIELD(mgr, reqConsIdx, mgr->consumed_ptr);
}
static hwaddr
@ -278,14 +278,14 @@ pvscsi_ring_flush_cmp(PVSCSIRingInfo *mgr)
trace_pvscsi_ring_flush_cmp(mgr->filled_cmp_ptr);
RS_SET_FIELD(mgr->rs_pa, cmpProdIdx, mgr->filled_cmp_ptr);
RS_SET_FIELD(mgr, cmpProdIdx, mgr->filled_cmp_ptr);
}
static bool
pvscsi_ring_msg_has_room(PVSCSIRingInfo *mgr)
{
uint32_t prodIdx = RS_GET_FIELD(mgr->rs_pa, msgProdIdx);
uint32_t consIdx = RS_GET_FIELD(mgr->rs_pa, msgConsIdx);
uint32_t prodIdx = RS_GET_FIELD(mgr, msgProdIdx);
uint32_t consIdx = RS_GET_FIELD(mgr, msgConsIdx);
return (prodIdx - consIdx) < (mgr->msg_len_mask + 1);
}
@ -298,7 +298,7 @@ pvscsi_ring_flush_msg(PVSCSIRingInfo *mgr)
trace_pvscsi_ring_flush_msg(mgr->filled_msg_ptr);
RS_SET_FIELD(mgr->rs_pa, msgProdIdx, mgr->filled_msg_ptr);
RS_SET_FIELD(mgr, msgProdIdx, mgr->filled_msg_ptr);
}
static void