aboutsummaryrefslogtreecommitdiffstats
path: root/sound/pci/ctxfi/ctvmem.c
diff options
context:
space:
mode:
authorStefan Richter <stefanr@s5r6.in-berlin.de>2010-02-24 14:31:04 -0500
committerStefan Richter <stefanr@s5r6.in-berlin.de>2010-02-24 14:33:45 -0500
commit109d28152b6e9d5de64cd23e3bc08885ccb3d1ef (patch)
treeb7b8863faa05254781acfb85cc41da3eef467c6b /sound/pci/ctxfi/ctvmem.c
parent168cf9af699e87d5a6f44b684583714ecabb8e71 (diff)
parent60b341b778cc2929df16c0a504c91621b3c6a4ad (diff)
Merge tag 'v2.6.33' for its firewire changes since last branch point
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'sound/pci/ctxfi/ctvmem.c')
-rw-r--r--sound/pci/ctxfi/ctvmem.c38
1 files changed, 18 insertions, 20 deletions
diff --git a/sound/pci/ctxfi/ctvmem.c b/sound/pci/ctxfi/ctvmem.c
index 6b78752e9503..65da6e466f80 100644
--- a/sound/pci/ctxfi/ctvmem.c
+++ b/sound/pci/ctxfi/ctvmem.c
@@ -138,7 +138,7 @@ ct_vm_map(struct ct_vm *vm, struct snd_pcm_substream *substream, int size)
138 return NULL; 138 return NULL;
139 } 139 }
140 140
141 ptp = vm->ptp[0]; 141 ptp = (unsigned long *)vm->ptp[0].area;
142 pte_start = (block->addr >> CT_PAGE_SHIFT); 142 pte_start = (block->addr >> CT_PAGE_SHIFT);
143 pages = block->size >> CT_PAGE_SHIFT; 143 pages = block->size >> CT_PAGE_SHIFT;
144 for (i = 0; i < pages; i++) { 144 for (i = 0; i < pages; i++) {
@@ -158,25 +158,25 @@ static void ct_vm_unmap(struct ct_vm *vm, struct ct_vm_block *block)
158} 158}
159 159
160/* * 160/* *
161 * return the host (kmalloced) addr of the @index-th device 161 * return the host physical addr of the @index-th device
162 * page talbe page on success, or NULL on failure. 162 * page table page on success, or ~0UL on failure.
163 * The first returned NULL indicates the termination. 163 * The first returned ~0UL indicates the termination.
164 * */ 164 * */
165static void * 165static dma_addr_t
166ct_get_ptp_virt(struct ct_vm *vm, int index) 166ct_get_ptp_phys(struct ct_vm *vm, int index)
167{ 167{
168 void *addr; 168 dma_addr_t addr;
169 169
170 addr = (index >= CT_PTP_NUM) ? NULL : vm->ptp[index]; 170 addr = (index >= CT_PTP_NUM) ? ~0UL : vm->ptp[index].addr;
171 171
172 return addr; 172 return addr;
173} 173}
174 174
175int ct_vm_create(struct ct_vm **rvm) 175int ct_vm_create(struct ct_vm **rvm, struct pci_dev *pci)
176{ 176{
177 struct ct_vm *vm; 177 struct ct_vm *vm;
178 struct ct_vm_block *block; 178 struct ct_vm_block *block;
179 int i; 179 int i, err = 0;
180 180
181 *rvm = NULL; 181 *rvm = NULL;
182 182
@@ -188,23 +188,21 @@ int ct_vm_create(struct ct_vm **rvm)
188 188
189 /* Allocate page table pages */ 189 /* Allocate page table pages */
190 for (i = 0; i < CT_PTP_NUM; i++) { 190 for (i = 0; i < CT_PTP_NUM; i++) {
191 vm->ptp[i] = kmalloc(PAGE_SIZE, GFP_KERNEL); 191 err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
192 if (!vm->ptp[i]) 192 snd_dma_pci_data(pci),
193 PAGE_SIZE, &vm->ptp[i]);
194 if (err < 0)
193 break; 195 break;
194 } 196 }
195 if (!i) { 197 if (err < 0) {
196 /* no page table pages are allocated */ 198 /* no page table pages are allocated */
197 kfree(vm); 199 ct_vm_destroy(vm);
198 return -ENOMEM; 200 return -ENOMEM;
199 } 201 }
200 vm->size = CT_ADDRS_PER_PAGE * i; 202 vm->size = CT_ADDRS_PER_PAGE * i;
201 /* Initialise remaining ptps */
202 for (; i < CT_PTP_NUM; i++)
203 vm->ptp[i] = NULL;
204
205 vm->map = ct_vm_map; 203 vm->map = ct_vm_map;
206 vm->unmap = ct_vm_unmap; 204 vm->unmap = ct_vm_unmap;
207 vm->get_ptp_virt = ct_get_ptp_virt; 205 vm->get_ptp_phys = ct_get_ptp_phys;
208 INIT_LIST_HEAD(&vm->unused); 206 INIT_LIST_HEAD(&vm->unused);
209 INIT_LIST_HEAD(&vm->used); 207 INIT_LIST_HEAD(&vm->used);
210 block = kzalloc(sizeof(*block), GFP_KERNEL); 208 block = kzalloc(sizeof(*block), GFP_KERNEL);
@@ -242,7 +240,7 @@ void ct_vm_destroy(struct ct_vm *vm)
242 240
243 /* free allocated page table pages */ 241 /* free allocated page table pages */
244 for (i = 0; i < CT_PTP_NUM; i++) 242 for (i = 0; i < CT_PTP_NUM; i++)
245 kfree(vm->ptp[i]); 243 snd_dma_free_pages(&vm->ptp[i]);
246 244
247 vm->size = 0; 245 vm->size = 0;
248 246