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mm_drv: tlb: Fix mapped page in bank calculation

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The initial implementation was broken during improvements.
There was incorrect assumption that all pages are unmapped at
initials state. In reality at the beginning whole memory is
powered on, so we should mark all pages as mapped. Later in
initialization code unused pages are unmapped and if after this
some banks become empty (all pages unmapped), the power is
switched off.

Signed-off-by: Jaroslaw Stelter <Jaroslaw.Stelter@intel.com>
This commit is contained in:
Jaroslaw Stelter 2023-06-02 15:08:46 +02:00 • committed by Anas Nashif
commit faadbc42ee
4 changed files with 19 additions and 12 deletions
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14
drivers/mm/mm_drv_bank.c
View file

@ -15,24 +15,22 @@
*/
#include <zephyr/kernel.h>
#include <zephyr/sys/__assert.h>
#include <zephyr/drivers/mm/mm_drv_bank.h>
#include <zephyr/sys/mem_stats.h>
void sys_mm_drv_bank_init(struct mem_drv_bank *bank, uint32_t bank_pages)
{
bank->unmapped_pages = bank_pages;
bank->mapped_pages = 0;
bank->max_mapped_pages = 0;
bank->unmapped_pages = 0;
bank->mapped_pages = bank_pages;
bank->max_mapped_pages = bank_pages;
}
uint32_t sys_mm_drv_bank_page_mapped(struct mem_drv_bank *bank)
{
bank->unmapped_pages--;
bank->mapped_pages++;
if (bank->mapped_pages > bank->max_mapped_pages) {
bank->max_mapped_pages = bank->mapped_pages;
}
__ASSERT_NO_MSG(bank->mapped_pages <= bank->max_mapped_pages);
return bank->mapped_pages;
}
@ -40,7 +38,7 @@ uint32_t sys_mm_drv_bank_page_unmapped(struct mem_drv_bank *bank)
{
bank->unmapped_pages++;
bank->mapped_pages--;
__ASSERT_NO_MSG(bank->unmapped_pages <= bank->max_mapped_pages);
return bank->unmapped_pages;
}

4
drivers/mm/mm_drv_intel_adsp_mtl_tlb.c
View file

@ -378,7 +378,7 @@ int sys_mm_drv_unmap_page(void *virt)
sys_mm_drv_report_page_usage();
#endif
if (sys_mm_drv_bank_page_unmapped(&hpsram_bank[bank_idx]) == 0) {
if (sys_mm_drv_bank_page_unmapped(&hpsram_bank[bank_idx]) == SRAM_BANK_PAGE_NUM) {
sys_mm_drv_hpsram_pwr(bank_idx, false, false);
}
}
@ -649,7 +649,7 @@ static int sys_mm_drv_mm_init(const struct device *dev)
*/
for (int i = 0; i < L2_SRAM_BANK_NUM; i++) {
sys_mm_drv_bank_init(&hpsram_bank[i],
SRAM_BANK_SIZE / CONFIG_MM_DRV_PAGE_SIZE);
SRAM_BANK_PAGE_NUM);
}
#ifdef CONFIG_SOC_INTEL_COMM_WIDGET
used_pages = L2_SRAM_BANK_NUM * SRAM_BANK_SIZE / CONFIG_MM_DRV_PAGE_SIZE;