void
tsp_bus_mem_init2(bus_space_tag_t t, void *v)
{
struct tsp_config *pcp = v;
struct ts_pchip *pccsr = pcp->pc_csr;
int i, error;
/*
* Allocate the DMA windows out of the extent map.
*/
for (i = 0; i < 4; i++) {
alpha_mb();
if ((pccsr->tsp_wsba[i].tsg_r & WSBA_ENA) == 0) {
/* Window not in use. */
continue;
}
error = extent_alloc_region(CHIP_MEM_EXTENT(v),
WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r),
WSM_LEN(pccsr->tsp_wsm[i].tsg_r),
EX_NOWAIT | (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
if (error) {
printf("WARNING: unable to reserve DMA window "
"0x%lx - 0x%lx\n",
WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r),
WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r) +
(WSM_LEN(pccsr->tsp_wsm[i].tsg_r) - 1));
}
}
}
void
tsp_dma_init(struct tsp_config *pcp)
{
int i;
bus_dma_tag_t t;
struct ts_pchip *pccsr = pcp->pc_csr;
bus_addr_t dwbase, dwlen, sgwbase, sgwlen, tbase;
static struct map_expected {
uint32_t base, mask, enables;
} premap[4] = {
{ 0x00800000, 0x00700000, WSBA_ENA | WSBA_SG },
{ 0x80000000, 0x3ff00000, WSBA_ENA },
{ 0, 0, 0 },
{ 0, 0, 0 }
};
alpha_mb();
for(i = 0; i < 4; ++i) {
if (EDIFF(pccsr->tsp_wsba[i].tsg_r, premap[i].base) ||
EDIFF(pccsr->tsp_wsm[i].tsg_r, premap[i].mask))
printf("tsp%d: window %d: %lx/base %lx/mask %lx"
" reinitialized\n",
pcp->pc_pslot, i,
pccsr->tsp_wsba[i].tsg_r,
pccsr->tsp_wsm[i].tsg_r,
pccsr->tsp_tba[i].tsg_r);
pccsr->tsp_wsba[i].tsg_r = premap[i].base | premap[i].enables;
pccsr->tsp_wsm[i].tsg_r = premap[i].mask;
}
alpha_mb();
/*
* Initialize the DMA tag used for direct-mapped DMA.
*/
t = &pcp->pc_dmat_direct;
t->_cookie = pcp;
t->_wbase = dwbase = WSBA_ADDR(pccsr->tsp_wsba[1].tsg_r);
t->_wsize = dwlen = WSM_LEN(pccsr->tsp_wsm[1].tsg_r);
t->_next_window = &pcp->pc_dmat_sgmap;
t->_boundary = 0;
t->_sgmap = NULL;
t->_get_tag = tsp_dma_get_tag;
t->_dmamap_create = _bus_dmamap_create;
t->_dmamap_destroy = _bus_dmamap_destroy;
t->_dmamap_load = _bus_dmamap_load_direct;
t->_dmamap_load_mbuf = _bus_dmamap_load_mbuf_direct;
t->_dmamap_load_uio = _bus_dmamap_load_uio_direct;
t->_dmamap_load_raw = _bus_dmamap_load_raw_direct;
t->_dmamap_unload = _bus_dmamap_unload;
t->_dmamap_sync = _bus_dmamap_sync;
t->_dmamem_alloc = _bus_dmamem_alloc;
t->_dmamem_free = _bus_dmamem_free;
t->_dmamem_map = _bus_dmamem_map;
t->_dmamem_unmap = _bus_dmamem_unmap;
t->_dmamem_mmap = _bus_dmamem_mmap;
/*
* Initialize the DMA tag used for sgmap-mapped DMA.
*/
t = &pcp->pc_dmat_sgmap;
t->_cookie = pcp;
t->_wbase = sgwbase = WSBA_ADDR(pccsr->tsp_wsba[0].tsg_r);
t->_wsize = sgwlen = WSM_LEN(pccsr->tsp_wsm[0].tsg_r);
t->_next_window = NULL;
t->_boundary = 0;
t->_sgmap = &pcp->pc_sgmap;
t->_pfthresh = TSP_SGMAP_PFTHRESH;
t->_get_tag = tsp_dma_get_tag;
t->_dmamap_create = alpha_sgmap_dmamap_create;
t->_dmamap_destroy = alpha_sgmap_dmamap_destroy;
t->_dmamap_load = tsp_bus_dmamap_load_sgmap;
t->_dmamap_load_mbuf = tsp_bus_dmamap_load_mbuf_sgmap;
t->_dmamap_load_uio = tsp_bus_dmamap_load_uio_sgmap;
t->_dmamap_load_raw = tsp_bus_dmamap_load_raw_sgmap;
t->_dmamap_unload = tsp_bus_dmamap_unload_sgmap;
t->_dmamap_sync = _bus_dmamap_sync;
t->_dmamem_alloc = _bus_dmamem_alloc;
t->_dmamem_free = _bus_dmamem_free;
t->_dmamem_map = _bus_dmamem_map;
t->_dmamem_unmap = _bus_dmamem_unmap;
t->_dmamem_mmap = _bus_dmamem_mmap;
/*
* Initialize the SGMAP. Align page table to 32k in case
* window is somewhat larger than expected.
*/
alpha_sgmap_init(t, &pcp->pc_sgmap, "tsp_sgmap",
sgwbase, 0, sgwlen, sizeof(uint64_t), NULL, (32*1024));
/*
* Enable window 0 and enable SG PTE mapping.
*/
alpha_mb();
pccsr->tsp_wsba[0].tsg_r |= WSBA_SG | WSBA_ENA;
alpha_mb();
/*
* Enable window 1 in direct mode.
*/
alpha_mb();
pccsr->tsp_wsba[1].tsg_r =
(pccsr->tsp_wsba[1].tsg_r & ~WSBA_SG) | WSBA_ENA;
alpha_mb();
/*
* Check windows for sanity, especially if we later decide to
* use the firmware's initialization in some cases.
*/
if ((sgwbase <= dwbase && dwbase < sgwbase + sgwlen) ||
(dwbase <= sgwbase && sgwbase < dwbase + dwlen))
panic("tsp_dma_init: overlap");
tbase = pcp->pc_sgmap.aps_ptpa;
if (tbase & ~0x7fffffc00UL)
panic("tsp_dma_init: bad page table address");
alpha_mb();
pccsr->tsp_tba[0].tsg_r = tbase;
alpha_mb();
tsp_tlb_invalidate(pcp);
alpha_mb();
/* XXX XXX BEGIN XXX XXX */
{ /* XXX */
extern paddr_t alpha_XXX_dmamap_or; /* XXX */
alpha_XXX_dmamap_or = dwbase; /* XXX */
} /* XXX */
/* XXX XXX END XXX XXX */
}