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usb: ci_udc: lift ilist size calculations to global scope

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This will allow functions other than ci_udc_probe() to make use of the
constants in a future change.

This in turn requires converting the const int variables to #defines,
since the initialization of one global const int can't depend on the
value of another const int; the compiler thinks it's non-constant if
that dependency exists.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Stephen Warren 2014-07-01 11:41:15 -06:00 committed by Marek Vasut
parent 8d7c39d3e8
commit 06b38fcbae
1 changed files with 14 additions and 14 deletions
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28
drivers/usb/gadget/ci_udc.c
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@ -34,6 +34,17 @@
#error This driver can not work on systems with caches longer than 128b
#endif
/*
* Each qTD item must be 32-byte aligned, each qTD touple must be
* cacheline aligned. There are two qTD items for each endpoint and
* only one of them is used for the endpoint at time, so we can group
* them together.
*/
#define ILIST_ALIGN roundup(ARCH_DMA_MINALIGN, 32)
#define ILIST_ENT_RAW_SZ (2 * sizeof(struct ept_queue_item))
#define ILIST_ENT_SZ roundup(ILIST_ENT_RAW_SZ, ARCH_DMA_MINALIGN)
#define ILIST_SZ (NUM_ENDPOINTS * ILIST_ENT_SZ)
#ifndef DEBUG
#define DBG(x...) do {} while (0)
#else
@ -786,29 +797,18 @@ static int ci_udc_probe(void)
const int eplist_raw_sz = num * sizeof(struct ept_queue_head);
const int eplist_sz = roundup(eplist_raw_sz, ARCH_DMA_MINALIGN);
const int ilist_align = roundup(ARCH_DMA_MINALIGN, 32);
const int ilist_ent_raw_sz = 2 * sizeof(struct ept_queue_item);
const int ilist_ent_sz = roundup(ilist_ent_raw_sz, ARCH_DMA_MINALIGN);
const int ilist_sz = NUM_ENDPOINTS * ilist_ent_sz;
/* The QH list must be aligned to 4096 bytes. */
controller.epts = memalign(eplist_align, eplist_sz);
if (!controller.epts)
return -ENOMEM;
memset(controller.epts, 0, eplist_sz);
/*
* Each qTD item must be 32-byte aligned, each qTD touple must be
* cacheline aligned. There are two qTD items for each endpoint and
* only one of them is used for the endpoint at time, so we can group
* them together.
*/
controller.items_mem = memalign(ilist_align, ilist_sz);
controller.items_mem = memalign(ILIST_ALIGN, ILIST_SZ);
if (!controller.items_mem) {
free(controller.epts);
return -ENOMEM;
}
memset(controller.items_mem, 0, ilist_sz);
memset(controller.items_mem, 0, ILIST_SZ);
for (i = 0; i < 2 * NUM_ENDPOINTS; i++) {
/*
@ -828,7 +828,7 @@ static int ci_udc_probe(void)
head->next = TERMINATE;
head->info = 0;
imem = controller.items_mem + ((i >> 1) * ilist_ent_sz);
imem = controller.items_mem + ((i >> 1) * ILIST_ENT_SZ);
if (i & 1)
imem += sizeof(struct ept_queue_item);