Commit b73a635f authored by Milton Miller's avatar Milton Miller Committed by Benjamin Herrenschmidt

powerpc/pseries/iommu: Cleanup ddw naming

When using a property refering to the availibily of dynamic dma windows
call it ddw_avail not ddr_avail.

dupe_ddw_if_already_created does not dupilcate anything, it only finds
and reuses the windows we already created, so rename it to
find_existing_ddw.  Also, it does not need the pci device node, so
remove that argument.
Signed-off-by: default avatarMilton Miller <miltonm@bga.com>
Signed-off-by: default avatarNishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent c8566780
...@@ -659,16 +659,16 @@ static void remove_ddw(struct device_node *np) ...@@ -659,16 +659,16 @@ static void remove_ddw(struct device_node *np)
{ {
struct dynamic_dma_window_prop *dwp; struct dynamic_dma_window_prop *dwp;
struct property *win64; struct property *win64;
const u32 *ddr_avail; const u32 *ddw_avail;
u64 liobn; u64 liobn;
int len, ret; int len, ret;
ddr_avail = of_get_property(np, "ibm,ddw-applicable", &len); ddw_avail = of_get_property(np, "ibm,ddw-applicable", &len);
win64 = of_find_property(np, DIRECT64_PROPNAME, NULL); win64 = of_find_property(np, DIRECT64_PROPNAME, NULL);
if (!win64) if (!win64)
return; return;
if (!ddr_avail || len < 3 * sizeof(u32) || win64->length < sizeof(*dwp)) if (!ddw_avail || len < 3 * sizeof(u32) || win64->length < sizeof(*dwp))
goto delprop; goto delprop;
dwp = win64->value; dwp = win64->value;
...@@ -684,15 +684,15 @@ static void remove_ddw(struct device_node *np) ...@@ -684,15 +684,15 @@ static void remove_ddw(struct device_node *np)
pr_debug("%s successfully cleared tces in window.\n", pr_debug("%s successfully cleared tces in window.\n",
np->full_name); np->full_name);
ret = rtas_call(ddr_avail[2], 1, 1, NULL, liobn); ret = rtas_call(ddw_avail[2], 1, 1, NULL, liobn);
if (ret) if (ret)
pr_warning("%s: failed to remove direct window: rtas returned " pr_warning("%s: failed to remove direct window: rtas returned "
"%d to ibm,remove-pe-dma-window(%x) %llx\n", "%d to ibm,remove-pe-dma-window(%x) %llx\n",
np->full_name, ret, ddr_avail[2], liobn); np->full_name, ret, ddw_avail[2], liobn);
else else
pr_debug("%s: successfully removed direct window: rtas returned " pr_debug("%s: successfully removed direct window: rtas returned "
"%d to ibm,remove-pe-dma-window(%x) %llx\n", "%d to ibm,remove-pe-dma-window(%x) %llx\n",
np->full_name, ret, ddr_avail[2], liobn); np->full_name, ret, ddw_avail[2], liobn);
delprop: delprop:
ret = prom_remove_property(np, win64); ret = prom_remove_property(np, win64);
...@@ -701,16 +701,12 @@ static void remove_ddw(struct device_node *np) ...@@ -701,16 +701,12 @@ static void remove_ddw(struct device_node *np)
np->full_name, ret); np->full_name, ret);
} }
static u64 dupe_ddw_if_already_created(struct pci_dev *dev, struct device_node *pdn) static u64 find_existing_ddw(struct device_node *pdn)
{ {
struct device_node *dn;
struct pci_dn *pcidn;
struct direct_window *window; struct direct_window *window;
const struct dynamic_dma_window_prop *direct64; const struct dynamic_dma_window_prop *direct64;
u64 dma_addr = 0; u64 dma_addr = 0;
dn = pci_device_to_OF_node(dev);
pcidn = PCI_DN(dn);
spin_lock(&direct_window_list_lock); spin_lock(&direct_window_list_lock);
/* check if we already created a window and dupe that config if so */ /* check if we already created a window and dupe that config if so */
list_for_each_entry(window, &direct_window_list, list) { list_for_each_entry(window, &direct_window_list, list) {
...@@ -758,7 +754,7 @@ static int find_existing_ddw_windows(void) ...@@ -758,7 +754,7 @@ static int find_existing_ddw_windows(void)
} }
machine_arch_initcall(pseries, find_existing_ddw_windows); machine_arch_initcall(pseries, find_existing_ddw_windows);
static int query_ddw(struct pci_dev *dev, const u32 *ddr_avail, static int query_ddw(struct pci_dev *dev, const u32 *ddw_avail,
struct ddw_query_response *query) struct ddw_query_response *query)
{ {
struct device_node *dn; struct device_node *dn;
...@@ -779,15 +775,15 @@ static int query_ddw(struct pci_dev *dev, const u32 *ddr_avail, ...@@ -779,15 +775,15 @@ static int query_ddw(struct pci_dev *dev, const u32 *ddr_avail,
if (pcidn->eeh_pe_config_addr) if (pcidn->eeh_pe_config_addr)
cfg_addr = pcidn->eeh_pe_config_addr; cfg_addr = pcidn->eeh_pe_config_addr;
buid = pcidn->phb->buid; buid = pcidn->phb->buid;
ret = rtas_call(ddr_avail[0], 3, 5, (u32 *)query, ret = rtas_call(ddw_avail[0], 3, 5, (u32 *)query,
cfg_addr, BUID_HI(buid), BUID_LO(buid)); cfg_addr, BUID_HI(buid), BUID_LO(buid));
dev_info(&dev->dev, "ibm,query-pe-dma-windows(%x) %x %x %x" dev_info(&dev->dev, "ibm,query-pe-dma-windows(%x) %x %x %x"
" returned %d\n", ddr_avail[0], cfg_addr, BUID_HI(buid), " returned %d\n", ddw_avail[0], cfg_addr, BUID_HI(buid),
BUID_LO(buid), ret); BUID_LO(buid), ret);
return ret; return ret;
} }
static int create_ddw(struct pci_dev *dev, const u32 *ddr_avail, static int create_ddw(struct pci_dev *dev, const u32 *ddw_avail,
struct ddw_create_response *create, int page_shift, struct ddw_create_response *create, int page_shift,
int window_shift) int window_shift)
{ {
...@@ -812,12 +808,12 @@ static int create_ddw(struct pci_dev *dev, const u32 *ddr_avail, ...@@ -812,12 +808,12 @@ static int create_ddw(struct pci_dev *dev, const u32 *ddr_avail,
do { do {
/* extra outputs are LIOBN and dma-addr (hi, lo) */ /* extra outputs are LIOBN and dma-addr (hi, lo) */
ret = rtas_call(ddr_avail[1], 5, 4, (u32 *)create, cfg_addr, ret = rtas_call(ddw_avail[1], 5, 4, (u32 *)create, cfg_addr,
BUID_HI(buid), BUID_LO(buid), page_shift, window_shift); BUID_HI(buid), BUID_LO(buid), page_shift, window_shift);
} while (rtas_busy_delay(ret)); } while (rtas_busy_delay(ret));
dev_info(&dev->dev, dev_info(&dev->dev,
"ibm,create-pe-dma-window(%x) %x %x %x %x %x returned %d " "ibm,create-pe-dma-window(%x) %x %x %x %x %x returned %d "
"(liobn = 0x%x starting addr = %x %x)\n", ddr_avail[1], "(liobn = 0x%x starting addr = %x %x)\n", ddw_avail[1],
cfg_addr, BUID_HI(buid), BUID_LO(buid), page_shift, cfg_addr, BUID_HI(buid), BUID_LO(buid), page_shift,
window_shift, ret, create->liobn, create->addr_hi, create->addr_lo); window_shift, ret, create->liobn, create->addr_hi, create->addr_lo);
...@@ -843,14 +839,14 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn) ...@@ -843,14 +839,14 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn)
int page_shift; int page_shift;
u64 dma_addr, max_addr; u64 dma_addr, max_addr;
struct device_node *dn; struct device_node *dn;
const u32 *uninitialized_var(ddr_avail); const u32 *uninitialized_var(ddw_avail);
struct direct_window *window; struct direct_window *window;
struct property *win64; struct property *win64;
struct dynamic_dma_window_prop *ddwprop; struct dynamic_dma_window_prop *ddwprop;
mutex_lock(&direct_window_init_mutex); mutex_lock(&direct_window_init_mutex);
dma_addr = dupe_ddw_if_already_created(dev, pdn); dma_addr = find_existing_ddw(pdn);
if (dma_addr != 0) if (dma_addr != 0)
goto out_unlock; goto out_unlock;
...@@ -862,8 +858,8 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn) ...@@ -862,8 +858,8 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn)
* for the given node in that order. * for the given node in that order.
* the property is actually in the parent, not the PE * the property is actually in the parent, not the PE
*/ */
ddr_avail = of_get_property(pdn, "ibm,ddw-applicable", &len); ddw_avail = of_get_property(pdn, "ibm,ddw-applicable", &len);
if (!ddr_avail || len < 3 * sizeof(u32)) if (!ddw_avail || len < 3 * sizeof(u32))
goto out_unlock; goto out_unlock;
/* /*
...@@ -873,7 +869,7 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn) ...@@ -873,7 +869,7 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn)
* of page sizes: supported and supported for migrate-dma. * of page sizes: supported and supported for migrate-dma.
*/ */
dn = pci_device_to_OF_node(dev); dn = pci_device_to_OF_node(dev);
ret = query_ddw(dev, ddr_avail, &query); ret = query_ddw(dev, ddw_avail, &query);
if (ret != 0) if (ret != 0)
goto out_unlock; goto out_unlock;
...@@ -922,7 +918,7 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn) ...@@ -922,7 +918,7 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn)
goto out_free_prop; goto out_free_prop;
} }
ret = create_ddw(dev, ddr_avail, &create, page_shift, len); ret = create_ddw(dev, ddw_avail, &create, page_shift, len);
if (ret != 0) if (ret != 0)
goto out_free_prop; goto out_free_prop;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment