From b22da3d8526a935aa31e086e63f60ff3246cb61c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 07:24:11 +0000
Subject: [PATCH] add stmac read mac form eeprom
---
kernel/drivers/iommu/rockchip-iommu.c | 661 ++++++++++++++++--------------------------------------
1 files changed, 196 insertions(+), 465 deletions(-)
diff --git a/kernel/drivers/iommu/rockchip-iommu.c b/kernel/drivers/iommu/rockchip-iommu.c
index 4a8481a..f6720d0 100644
--- a/kernel/drivers/iommu/rockchip-iommu.c
+++ b/kernel/drivers/iommu/rockchip-iommu.c
@@ -1,7 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * IOMMU API for Rockchip
+ *
+ * Module Authors: Simon Xue <xxm@rock-chips.com>
+ * Daniel Kurtz <djkurtz@chromium.org>
*/
#include <linux/clk.h>
@@ -18,6 +20,7 @@
#include <linux/list.h>
#include <linux/mm.h>
#include <linux/module.h>
+#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_iommu.h>
#include <linux/of_platform.h>
@@ -84,30 +87,6 @@
*/
#define RK_IOMMU_PGSIZE_BITMAP 0x007ff000
-#define DT_LO_MASK 0xfffff000
-#define DT_HI_MASK GENMASK_ULL(39, 32)
-#define DT_SHIFT 28
-
-#define DTE_BASE_HI_MASK GENMASK(11, 4)
-
-#define PAGE_DESC_LO_MASK 0xfffff000
-#define PAGE_DESC_HI1_LOWER 32
-#define PAGE_DESC_HI1_UPPER 35
-#define PAGE_DESC_HI2_LOWER 36
-#define PAGE_DESC_HI2_UPPER 39
-#define PAGE_DESC_HI_MASK1 GENMASK_ULL(PAGE_DESC_HI1_UPPER, PAGE_DESC_HI1_LOWER)
-#define PAGE_DESC_HI_MASK2 GENMASK_ULL(PAGE_DESC_HI2_UPPER, PAGE_DESC_HI2_LOWER)
-
-#define DTE_HI1_LOWER 8
-#define DTE_HI1_UPPER 11
-#define DTE_HI2_LOWER 4
-#define DTE_HI2_UPPER 7
-#define DTE_HI_MASK1 GENMASK(DTE_HI1_UPPER, DTE_HI1_LOWER)
-#define DTE_HI_MASK2 GENMASK(DTE_HI2_UPPER, DTE_HI2_LOWER)
-
-#define PAGE_DESC_HI_SHIFT1 (PAGE_DESC_HI1_LOWER - DTE_HI1_LOWER)
-#define PAGE_DESC_HI_SHIFT2 (PAGE_DESC_HI2_LOWER - DTE_HI2_LOWER)
-
struct rk_iommu_domain {
struct list_head iommus;
u32 *dt; /* page directory table */
@@ -119,18 +98,24 @@
struct iommu_domain domain;
};
-struct rockchip_iommu_data {
- u32 version;
+struct rk_iommu_ops {
+ phys_addr_t (*pt_address)(u32 dte);
+ u32 (*mk_dtentries)(dma_addr_t pt_dma);
+ u32 (*mk_ptentries)(phys_addr_t page, int prot);
+ phys_addr_t (*dte_addr_phys)(u32 addr);
+ u32 (*dma_addr_dte)(dma_addr_t dt_dma);
+ u64 dma_bit_mask;
};
struct rk_iommu {
struct device *dev;
void __iomem **bases;
int num_mmu;
+ int num_irq;
struct clk_bulk_data *clocks;
int num_clocks;
bool reset_disabled;
- bool skip_read; /* rk3126/rk3128 can't read vop iommu registers */
+ bool skip_read; /* rk3126/rk3128 can't read vop iommu registers */
bool dlr_disable; /* avoid access iommu when runtime ops called */
bool cmd_retry;
bool master_handle_irq;
@@ -138,8 +123,8 @@
struct list_head node; /* entry in rk_iommu_domain.iommus */
struct iommu_domain *domain; /* domain to which iommu is attached */
struct iommu_group *group;
- u32 version;
bool shootdown_entire;
+ bool iommu_enabled;
bool need_res_map;
};
@@ -150,6 +135,7 @@
};
static struct device *dma_dev;
+static const struct rk_iommu_ops *rk_ops;
static struct rk_iommu *rk_iommu_from_dev(struct device *dev);
static char reserve_range[PAGE_SIZE] __aligned(PAGE_SIZE);
static phys_addr_t res_page;
@@ -211,6 +197,11 @@
#define RK_DTE_PT_ADDRESS_MASK 0xfffff000
#define RK_DTE_PT_VALID BIT(0)
+static inline phys_addr_t rk_dte_pt_address(u32 dte)
+{
+ return (phys_addr_t)dte & RK_DTE_PT_ADDRESS_MASK;
+}
+
/*
* In v2:
* 31:12 - PT address bit 31:0
@@ -219,20 +210,21 @@
* 3: 1 - Reserved
* 0 - 1 if PT @ PT address is valid
*/
-#define RK_DTE_PT_ADDRESS_MASK_V2 0xfffffff0
-
-static inline phys_addr_t rk_dte_pt_address(u32 dte)
-{
- return (phys_addr_t)dte & RK_DTE_PT_ADDRESS_MASK;
-}
+#define RK_DTE_PT_ADDRESS_MASK_V2 GENMASK_ULL(31, 4)
+#define DTE_HI_MASK1 GENMASK(11, 8)
+#define DTE_HI_MASK2 GENMASK(7, 4)
+#define DTE_HI_SHIFT1 24 /* shift bit 8 to bit 32 */
+#define DTE_HI_SHIFT2 32 /* shift bit 4 to bit 36 */
+#define PAGE_DESC_HI_MASK1 GENMASK_ULL(35, 32)
+#define PAGE_DESC_HI_MASK2 GENMASK_ULL(39, 36)
static inline phys_addr_t rk_dte_pt_address_v2(u32 dte)
{
u64 dte_v2 = dte;
- dte_v2 = ((dte_v2 & DTE_HI_MASK2) << PAGE_DESC_HI_SHIFT2) |
- ((dte_v2 & DTE_HI_MASK1) << PAGE_DESC_HI_SHIFT1) |
- (dte_v2 & PAGE_DESC_LO_MASK);
+ dte_v2 = ((dte_v2 & DTE_HI_MASK2) << DTE_HI_SHIFT2) |
+ ((dte_v2 & DTE_HI_MASK1) << DTE_HI_SHIFT1) |
+ (dte_v2 & RK_DTE_PT_ADDRESS_MASK);
return (phys_addr_t)dte_v2;
}
@@ -249,9 +241,9 @@
static inline u32 rk_mk_dte_v2(dma_addr_t pt_dma)
{
- pt_dma = (pt_dma & PAGE_DESC_LO_MASK) |
- ((pt_dma & PAGE_DESC_HI_MASK1) >> PAGE_DESC_HI_SHIFT1) |
- (pt_dma & PAGE_DESC_HI_MASK2) >> PAGE_DESC_HI_SHIFT2;
+ pt_dma = (pt_dma & RK_DTE_PT_ADDRESS_MASK) |
+ ((pt_dma & PAGE_DESC_HI_MASK1) >> DTE_HI_SHIFT1) |
+ (pt_dma & PAGE_DESC_HI_MASK2) >> DTE_HI_SHIFT2;
return (pt_dma & RK_DTE_PT_ADDRESS_MASK_V2) | RK_DTE_PT_VALID;
}
@@ -282,43 +274,12 @@
#define RK_PTE_PAGE_READABLE BIT(1)
#define RK_PTE_PAGE_VALID BIT(0)
-/*
- * In v2:
- * 31:12 - Page address bit 31:0
- * 11:9 - Page address bit 34:32
- * 8:4 - Page address bit 39:35
- * 3 - Security
- * 2 - Readable
- * 1 - Writable
- * 0 - 1 if Page @ Page address is valid
- */
-#define RK_PTE_PAGE_ADDRESS_MASK_V2 0xfffffff0
-#define RK_PTE_PAGE_FLAGS_MASK_V2 0x0000000e
-#define RK_PTE_PAGE_READABLE_V2 BIT(2)
-#define RK_PTE_PAGE_WRITABLE_V2 BIT(1)
-
-#define RK_PTE_PAGE_REPRESENT BIT(3)
-
-static inline phys_addr_t rk_pte_page_address(u32 pte)
-{
- return (phys_addr_t)pte & RK_PTE_PAGE_ADDRESS_MASK;
-}
-
-static inline phys_addr_t rk_pte_page_address_v2(u32 pte)
-{
- u64 pte_v2 = pte;
-
- pte_v2 = ((pte_v2 & DTE_HI_MASK2) << PAGE_DESC_HI_SHIFT2) |
- ((pte_v2 & DTE_HI_MASK1) << PAGE_DESC_HI_SHIFT1) |
- (pte_v2 & PAGE_DESC_LO_MASK);
-
- return (phys_addr_t)pte_v2;
-}
-
static inline bool rk_pte_is_page_valid(u32 pte)
{
return pte & RK_PTE_PAGE_VALID;
}
+
+#define RK_PTE_PAGE_REPRESENT BIT(3)
static inline bool rk_pte_is_page_represent(u32 pte)
{
@@ -329,11 +290,9 @@
static u32 rk_mk_pte(phys_addr_t page, int prot)
{
u32 flags = 0;
-
flags |= (prot & IOMMU_READ) ? RK_PTE_PAGE_READABLE : 0;
flags |= (prot & IOMMU_WRITE) ? RK_PTE_PAGE_WRITABLE : 0;
flags |= (prot & IOMMU_PRIV) ? RK_PTE_PAGE_REPRESENT : 0;
-
page &= RK_PTE_PAGE_ADDRESS_MASK;
return page | flags | RK_PTE_PAGE_VALID;
}
@@ -342,19 +301,16 @@
{
u32 flags = 0;
- flags |= (prot & IOMMU_READ) ? RK_PTE_PAGE_READABLE_V2 : 0;
- flags |= (prot & IOMMU_WRITE) ? RK_PTE_PAGE_WRITABLE_V2 : 0;
/* If BIT(3) set, don't break iommu_map if BIT(0) set.
* Means we can reupdate a page that already presented. We can use
* this bit to reupdate a pre-mapped 4G range.
*/
flags |= (prot & IOMMU_PRIV) ? RK_PTE_PAGE_REPRESENT : 0;
- page = (page & PAGE_DESC_LO_MASK) |
- ((page & PAGE_DESC_HI_MASK1) >> PAGE_DESC_HI_SHIFT1) |
- (page & PAGE_DESC_HI_MASK2) >> PAGE_DESC_HI_SHIFT2;
- page &= RK_PTE_PAGE_ADDRESS_MASK_V2;
- return page | flags | RK_PTE_PAGE_VALID;
+ flags |= (prot & IOMMU_READ) ? RK_PTE_PAGE_READABLE : 0;
+ flags |= (prot & IOMMU_WRITE) ? RK_PTE_PAGE_WRITABLE : 0;
+
+ return rk_mk_dte_v2(page) | flags;
}
static u32 rk_mk_pte_invalid(u32 pte)
@@ -600,12 +556,17 @@
return ret;
}
+static u32 rk_iommu_read_dte_addr(void __iomem *base)
+{
+ return rk_iommu_read(base, RK_MMU_DTE_ADDR);
+}
+
static int rk_iommu_force_reset(struct rk_iommu *iommu)
{
int ret, i;
u32 dte_addr;
bool val;
- u32 address_mask;
+ u32 dte_address_mask;
if (iommu->reset_disabled)
return 0;
@@ -622,14 +583,13 @@
* In v2: upper 7 nybbles are read back.
*/
for (i = 0; i < iommu->num_mmu; i++) {
- rk_iommu_write(iommu->bases[i], RK_MMU_DTE_ADDR, DTE_ADDR_DUMMY);
+ dte_address_mask = rk_ops->pt_address(DTE_ADDR_DUMMY);
+ rk_iommu_write(iommu->bases[i], RK_MMU_DTE_ADDR, dte_address_mask);
- if (iommu->version >= 0x2)
- address_mask = RK_DTE_PT_ADDRESS_MASK_V2;
- else
- address_mask = RK_DTE_PT_ADDRESS_MASK;
- dte_addr = rk_iommu_read(iommu->bases[i], RK_MMU_DTE_ADDR);
- if (dte_addr != (DTE_ADDR_DUMMY & address_mask)) {
+ ret = readx_poll_timeout(rk_iommu_read_dte_addr, iommu->bases[i], dte_addr,
+ dte_addr == dte_address_mask,
+ RK_MMU_POLL_PERIOD_US, RK_MMU_POLL_TIMEOUT_US);
+ if (ret) {
dev_err(iommu->dev, "Error during raw reset. MMU_DTE_ADDR is not functioning\n");
return -EFAULT;
}
@@ -641,14 +601,41 @@
return 0;
ret = readx_poll_timeout(rk_iommu_is_reset_done, iommu, val,
- val, RK_MMU_FORCE_RESET_TIMEOUT_US,
- RK_MMU_POLL_TIMEOUT_US);
+ val, RK_MMU_POLL_TIMEOUT_US,
+ RK_MMU_FORCE_RESET_TIMEOUT_US);
if (ret) {
dev_err(iommu->dev, "FORCE_RESET command timed out\n");
return ret;
}
return 0;
+}
+
+static inline phys_addr_t rk_dte_addr_phys(u32 addr)
+{
+ return (phys_addr_t)addr;
+}
+
+static inline u32 rk_dma_addr_dte(dma_addr_t dt_dma)
+{
+ return dt_dma;
+}
+
+#define DT_HI_MASK GENMASK_ULL(39, 32)
+#define DTE_BASE_HI_MASK GENMASK(11, 4)
+#define DT_SHIFT 28
+
+static inline phys_addr_t rk_dte_addr_phys_v2(u32 addr)
+{
+ u64 addr64 = addr;
+ return (phys_addr_t)(addr64 & RK_DTE_PT_ADDRESS_MASK) |
+ ((addr64 & DTE_BASE_HI_MASK) << DT_SHIFT);
+}
+
+static inline u32 rk_dma_addr_dte_v2(dma_addr_t dt_dma)
+{
+ return (dt_dma & RK_DTE_PT_ADDRESS_MASK) |
+ ((dt_dma & DT_HI_MASK) >> DT_SHIFT);
}
static void log_iova(struct rk_iommu *iommu, int index, dma_addr_t iova)
@@ -670,11 +657,7 @@
page_offset = rk_iova_page_offset(iova);
mmu_dte_addr = rk_iommu_read(base, RK_MMU_DTE_ADDR);
- mmu_dte_addr_phys = (phys_addr_t)mmu_dte_addr;
- if (iommu->version >= 0x2) {
- mmu_dte_addr_phys = (mmu_dte_addr_phys & DT_LO_MASK) |
- ((mmu_dte_addr_phys & DTE_BASE_HI_MASK) << DT_SHIFT);
- }
+ mmu_dte_addr_phys = rk_ops->dte_addr_phys(mmu_dte_addr);
dte_addr_phys = mmu_dte_addr_phys + (4 * dte_index);
dte_addr = phys_to_virt(dte_addr_phys);
@@ -683,20 +666,14 @@
if (!rk_dte_is_pt_valid(dte))
goto print_it;
- if (iommu->version >= 0x2)
- pte_addr_phys = rk_dte_pt_address_v2(dte) + (pte_index * 4);
- else
- pte_addr_phys = rk_dte_pt_address(dte) + (pte_index * 4);
+ pte_addr_phys = rk_ops->pt_address(dte) + (pte_index * 4);
pte_addr = phys_to_virt(pte_addr_phys);
pte = *pte_addr;
if (!rk_pte_is_page_valid(pte))
goto print_it;
- if (iommu->version >= 0x2)
- page_addr_phys = rk_pte_page_address_v2(pte) + page_offset;
- else
- page_addr_phys = rk_pte_page_address(pte) + page_offset;
+ page_addr_phys = rk_ops->pt_address(pte) + page_offset;
page_flags = pte & RK_PTE_PAGE_FLAGS_MASK;
print_it:
@@ -835,41 +812,13 @@
if (!rk_dte_is_pt_valid(dte))
goto out;
- pt_phys = rk_dte_pt_address(dte);
+ pt_phys = rk_ops->pt_address(dte);
page_table = (u32 *)phys_to_virt(pt_phys);
pte = page_table[rk_iova_pte_index(iova)];
if (!rk_pte_is_page_valid(pte))
goto out;
- phys = rk_pte_page_address(pte) + rk_iova_page_offset(iova);
-out:
- spin_unlock_irqrestore(&rk_domain->dt_lock, flags);
-
- return phys;
-}
-
-static phys_addr_t rk_iommu_iova_to_phys_v2(struct iommu_domain *domain,
- dma_addr_t iova)
-{
- struct rk_iommu_domain *rk_domain = to_rk_domain(domain);
- unsigned long flags;
- phys_addr_t pt_phys, phys = 0;
- u32 dte, pte;
- u32 *page_table;
-
- spin_lock_irqsave(&rk_domain->dt_lock, flags);
-
- dte = rk_domain->dt[rk_iova_dte_index(iova)];
- if (!rk_dte_is_pt_valid(dte))
- goto out;
-
- pt_phys = rk_dte_pt_address_v2(dte);
- page_table = (u32 *)phys_to_virt(pt_phys);
- pte = page_table[rk_iova_pte_index(iova)];
- if (!rk_pte_is_page_valid(pte))
- goto out;
-
- phys = rk_pte_page_address_v2(pte) + rk_iova_page_offset(iova);
+ phys = rk_ops->pt_address(pte) + rk_iova_page_offset(iova);
out:
spin_unlock_irqrestore(&rk_domain->dt_lock, flags);
@@ -945,52 +894,13 @@
return ERR_PTR(-ENOMEM);
}
- dte = rk_mk_dte(pt_dma);
+ dte = rk_ops->mk_dtentries(pt_dma);
*dte_addr = dte;
- rk_table_flush(rk_domain, pt_dma, NUM_PT_ENTRIES);
rk_table_flush(rk_domain,
rk_domain->dt_dma + dte_index * sizeof(u32), 1);
done:
- pt_phys = rk_dte_pt_address(dte);
- return (u32 *)phys_to_virt(pt_phys);
-}
-
-static u32 *rk_dte_get_page_table_v2(struct rk_iommu_domain *rk_domain,
- dma_addr_t iova)
-{
- u32 *page_table, *dte_addr;
- u32 dte_index, dte;
- phys_addr_t pt_phys;
- dma_addr_t pt_dma;
-
- assert_spin_locked(&rk_domain->dt_lock);
-
- dte_index = rk_iova_dte_index(iova);
- dte_addr = &rk_domain->dt[dte_index];
- dte = *dte_addr;
- if (rk_dte_is_pt_valid(dte))
- goto done;
-
- page_table = (u32 *)get_zeroed_page(GFP_ATOMIC | GFP_DMA32);
- if (!page_table)
- return ERR_PTR(-ENOMEM);
-
- pt_dma = dma_map_single(dma_dev, page_table, SPAGE_SIZE, DMA_TO_DEVICE);
- if (dma_mapping_error(dma_dev, pt_dma)) {
- dev_err(dma_dev, "DMA mapping error while allocating page table\n");
- free_page((unsigned long)page_table);
- return ERR_PTR(-ENOMEM);
- }
-
- dte = rk_mk_dte_v2(pt_dma);
- *dte_addr = dte;
-
- rk_table_flush(rk_domain, pt_dma, NUM_PT_ENTRIES);
- rk_table_flush(rk_domain,
- rk_domain->dt_dma + dte_index * sizeof(u32), 1);
-done:
- pt_phys = rk_dte_pt_address_v2(dte);
+ pt_phys = rk_ops->pt_address(dte);
return (u32 *)phys_to_virt(pt_phys);
}
@@ -1009,15 +919,11 @@
if (!rk_pte_is_page_valid(pte))
break;
- if (iommu && iommu->need_res_map) {
- if (iommu->version >= 0x2)
- pte_addr[pte_count] = rk_mk_pte_v2(res_page,
+ if (iommu && iommu->need_res_map)
+ pte_addr[pte_count] = rk_ops->mk_ptentries(res_page,
prot);
- else
- pte_addr[pte_count] = rk_mk_pte(res_page, prot);
- } else {
+ else
pte_addr[pte_count] = rk_mk_pte_invalid(pte);
- }
}
rk_table_flush(rk_domain, pte_dma, pte_count);
@@ -1038,6 +944,7 @@
break;
}
spin_unlock_irqrestore(&rk_domain->iommus_lock, flags);
+
return iommu;
}
@@ -1058,9 +965,10 @@
goto unwind;
if (prot & IOMMU_PRIV) {
- pte_addr[pte_count] = rk_mk_pte(res_page, prot);
+ pte_addr[pte_count] = rk_ops->mk_ptentries(res_page, prot);
} else {
- pte_addr[pte_count] = rk_mk_pte(paddr, prot);
+ pte_addr[pte_count] = rk_ops->mk_ptentries(paddr, prot);
+
paddr += SPAGE_SIZE;
}
}
@@ -1082,55 +990,7 @@
pte_count * SPAGE_SIZE, NULL);
iova += pte_count * SPAGE_SIZE;
- page_phys = rk_pte_page_address(pte_addr[pte_count]);
- pr_err("iova: %pad already mapped to %pa cannot remap to phys: %pa prot: %#x\n",
- &iova, &page_phys, &paddr, prot);
-
- return -EADDRINUSE;
-}
-
-static int rk_iommu_map_iova_v2(struct rk_iommu_domain *rk_domain, u32 *pte_addr,
- dma_addr_t pte_dma, dma_addr_t iova,
- phys_addr_t paddr, size_t size, int prot)
-{
- unsigned int pte_count;
- unsigned int pte_total = size / SPAGE_SIZE;
- phys_addr_t page_phys;
-
- assert_spin_locked(&rk_domain->dt_lock);
-
- for (pte_count = 0; pte_count < pte_total; pte_count++) {
- u32 pte = pte_addr[pte_count];
-
- if (rk_pte_is_page_valid(pte) && !rk_pte_is_page_represent(pte))
- goto unwind;
-
- if (prot & IOMMU_PRIV) {
- pte_addr[pte_count] = rk_mk_pte_v2(res_page, prot);
- } else {
- pte_addr[pte_count] = rk_mk_pte_v2(paddr, prot);
- paddr += SPAGE_SIZE;
- }
- }
-
- rk_table_flush(rk_domain, pte_dma, pte_total);
-
- /*
- * Zap the first and last iova to evict from iotlb any previously
- * mapped cachelines holding stale values for its dte and pte.
- * We only zap the first and last iova, since only they could have
- * dte or pte shared with an existing mapping.
- */
- rk_iommu_zap_iova_first_last(rk_domain, iova, size);
-
- return 0;
-unwind:
- /* Unmap the range of iovas that we just mapped */
- rk_iommu_unmap_iova(rk_domain, pte_addr, pte_dma,
- pte_count * SPAGE_SIZE, NULL);
-
- iova += pte_count * SPAGE_SIZE;
- page_phys = rk_pte_page_address_v2(pte_addr[pte_count]);
+ page_phys = rk_ops->pt_address(pte_addr[pte_count]);
pr_err("iova: %pad already mapped to %pa cannot remap to phys: %pa prot: %#x\n",
&iova, &page_phys, &paddr, prot);
@@ -1138,7 +998,7 @@
}
static int rk_iommu_map(struct iommu_domain *domain, unsigned long _iova,
- phys_addr_t paddr, size_t size, int prot)
+ phys_addr_t paddr, size_t size, int prot, gfp_t gfp)
{
struct rk_iommu_domain *rk_domain = to_rk_domain(domain);
unsigned long flags;
@@ -1165,7 +1025,7 @@
dte = rk_domain->dt[rk_iova_dte_index(iova)];
pte_index = rk_iova_pte_index(iova);
pte_addr = &page_table[pte_index];
- pte_dma = rk_dte_pt_address(dte) + pte_index * sizeof(u32);
+ pte_dma = rk_ops->pt_address(dte) + pte_index * sizeof(u32);
ret = rk_iommu_map_iova(rk_domain, pte_addr, pte_dma, iova,
paddr, size, prot);
@@ -1174,45 +1034,8 @@
return ret;
}
-static int rk_iommu_map_v2(struct iommu_domain *domain, unsigned long _iova,
- phys_addr_t paddr, size_t size, int prot)
-{
- struct rk_iommu_domain *rk_domain = to_rk_domain(domain);
- unsigned long flags;
- dma_addr_t pte_dma, iova = (dma_addr_t)_iova;
- u32 *page_table, *pte_addr;
- u32 dte, pte_index;
- int ret;
-
- spin_lock_irqsave(&rk_domain->dt_lock, flags);
-
- /*
- * pgsize_bitmap specifies iova sizes that fit in one page table
- * (1024 4-KiB pages = 4 MiB).
- * So, size will always be 4096 <= size <= 4194304.
- * Since iommu_map() guarantees that both iova and size will be
- * aligned, we will always only be mapping from a single dte here.
- */
- page_table = rk_dte_get_page_table_v2(rk_domain, iova);
- if (IS_ERR(page_table)) {
- spin_unlock_irqrestore(&rk_domain->dt_lock, flags);
- return PTR_ERR(page_table);
- }
-
- dte = rk_domain->dt[rk_iova_dte_index(iova)];
- pte_index = rk_iova_pte_index(iova);
- pte_addr = &page_table[pte_index];
- pte_dma = rk_dte_pt_address_v2(dte) + pte_index * sizeof(u32);
- ret = rk_iommu_map_iova_v2(rk_domain, pte_addr, pte_dma, iova,
- paddr, size, prot);
-
- spin_unlock_irqrestore(&rk_domain->dt_lock, flags);
-
- return ret;
-}
-
static size_t rk_iommu_unmap(struct iommu_domain *domain, unsigned long _iova,
- size_t size)
+ size_t size, struct iommu_iotlb_gather *gather)
{
struct rk_iommu_domain *rk_domain = to_rk_domain(domain);
unsigned long flags;
@@ -1239,49 +1062,7 @@
return 0;
}
- pt_phys = rk_dte_pt_address(dte);
- pte_addr = (u32 *)phys_to_virt(pt_phys) + rk_iova_pte_index(iova);
- pte_dma = pt_phys + rk_iova_pte_index(iova) * sizeof(u32);
- unmap_size = rk_iommu_unmap_iova(rk_domain, pte_addr, pte_dma, size,
- iommu);
-
- spin_unlock_irqrestore(&rk_domain->dt_lock, flags);
-
- /* Shootdown iotlb entries for iova range that was just unmapped */
- rk_iommu_zap_iova(rk_domain, iova, unmap_size);
-
- return unmap_size;
-}
-
-static size_t rk_iommu_unmap_v2(struct iommu_domain *domain, unsigned long _iova,
- size_t size)
-{
- struct rk_iommu_domain *rk_domain = to_rk_domain(domain);
- unsigned long flags;
- dma_addr_t pte_dma, iova = (dma_addr_t)_iova;
- phys_addr_t pt_phys;
- u32 dte;
- u32 *pte_addr;
- size_t unmap_size;
- struct rk_iommu *iommu = rk_iommu_get(rk_domain);
-
- spin_lock_irqsave(&rk_domain->dt_lock, flags);
-
- /*
- * pgsize_bitmap specifies iova sizes that fit in one page table
- * (1024 4-KiB pages = 4 MiB).
- * So, size will always be 4096 <= size <= 4194304.
- * Since iommu_unmap() guarantees that both iova and size will be
- * aligned, we will always only be unmapping from a single dte here.
- */
- dte = rk_domain->dt[rk_iova_dte_index(iova)];
- /* Just return 0 if iova is unmapped */
- if (!rk_dte_is_pt_valid(dte)) {
- spin_unlock_irqrestore(&rk_domain->dt_lock, flags);
- return 0;
- }
-
- pt_phys = rk_dte_pt_address_v2(dte);
+ pt_phys = rk_ops->pt_address(dte);
pte_addr = (u32 *)phys_to_virt(pt_phys) + rk_iova_pte_index(iova);
pte_dma = pt_phys + rk_iova_pte_index(iova) * sizeof(u32);
unmap_size = rk_iommu_unmap_iova(rk_domain, pte_addr, pte_dma, size,
@@ -1326,7 +1107,7 @@
static struct rk_iommu *rk_iommu_from_dev(struct device *dev)
{
- struct rk_iommudata *data = dev->archdata.iommu;
+ struct rk_iommudata *data = dev_iommu_priv_get(dev);
return data ? data->iommu : NULL;
}
@@ -1346,6 +1127,8 @@
}
rk_iommu_disable_stall(iommu);
clk_bulk_disable(iommu->num_clocks, iommu->clocks);
+
+ iommu->iommu_enabled = false;
}
int rockchip_iommu_disable(struct device *dev)
@@ -1368,7 +1151,6 @@
struct iommu_domain *domain = iommu->domain;
struct rk_iommu_domain *rk_domain = to_rk_domain(domain);
int ret, i;
- u32 dt_v2;
u32 auto_gate;
ret = clk_bulk_enable(iommu->num_clocks, iommu->clocks);
@@ -1384,14 +1166,8 @@
goto out_disable_stall;
for (i = 0; i < iommu->num_mmu; i++) {
- if (iommu->version >= 0x2) {
- dt_v2 = (rk_domain->dt_dma & DT_LO_MASK) |
- ((rk_domain->dt_dma & DT_HI_MASK) >> DT_SHIFT);
- rk_iommu_write(iommu->bases[i], RK_MMU_DTE_ADDR, dt_v2);
- } else {
- rk_iommu_write(iommu->bases[i], RK_MMU_DTE_ADDR,
- rk_domain->dt_dma);
- }
+ rk_iommu_write(iommu->bases[i], RK_MMU_DTE_ADDR,
+ rk_ops->dma_addr_dte(rk_domain->dt_dma));
rk_iommu_base_command(iommu->bases[i], RK_MMU_CMD_ZAP_CACHE);
rk_iommu_write(iommu->bases[i], RK_MMU_INT_MASK, RK_MMU_IRQ_MASK);
@@ -1407,6 +1183,10 @@
rk_iommu_disable_stall(iommu);
out_disable_clocks:
clk_bulk_disable(iommu->num_clocks, iommu->clocks);
+
+ if (!ret)
+ iommu->iommu_enabled = true;
+
return ret;
}
@@ -1430,7 +1210,7 @@
if (!iommu)
return false;
- return rk_iommu_is_paging_enabled(iommu);
+ return iommu->iommu_enabled;
}
EXPORT_SYMBOL(rockchip_iommu_is_enabled);
@@ -1471,8 +1251,7 @@
dev_dbg(dev, "Detaching from iommu domain\n");
- /* iommu already detached */
- if (iommu->domain != domain)
+ if (!iommu->domain)
return;
iommu->domain = NULL;
@@ -1506,10 +1285,6 @@
return 0;
dev_dbg(dev, "Attaching to iommu domain\n");
-
- /* iommu already attached */
- if (iommu->domain == domain)
- return 0;
if (iommu->domain)
rk_iommu_detach_device(iommu->domain, dev);
@@ -1572,8 +1347,6 @@
goto err_free_dt;
}
- rk_table_flush(rk_domain, rk_domain->dt_dma, NUM_DT_ENTRIES);
-
spin_lock_init(&rk_domain->iommus_lock);
spin_lock_init(&rk_domain->dt_lock);
INIT_LIST_HEAD(&rk_domain->iommus);
@@ -1605,7 +1378,7 @@
for (i = 0; i < NUM_DT_ENTRIES; i++) {
u32 dte = rk_domain->dt[i];
if (rk_dte_is_pt_valid(dte)) {
- phys_addr_t pt_phys = rk_dte_pt_address(dte);
+ phys_addr_t pt_phys = rk_ops->pt_address(dte);
u32 *page_table = phys_to_virt(pt_phys);
dma_unmap_single(dma_dev, pt_phys,
SPAGE_SIZE, DMA_TO_DEVICE);
@@ -1617,58 +1390,20 @@
SPAGE_SIZE, DMA_TO_DEVICE);
free_page((unsigned long)rk_domain->dt);
- if (domain->type == IOMMU_DOMAIN_DMA)
- iommu_put_dma_cookie(&rk_domain->domain);
kfree(rk_domain);
}
-static void rk_iommu_domain_free_v2(struct iommu_domain *domain)
+static struct iommu_device *rk_iommu_probe_device(struct device *dev)
{
- struct rk_iommu_domain *rk_domain = to_rk_domain(domain);
- int i;
-
- WARN_ON(!list_empty(&rk_domain->iommus));
-
- for (i = 0; i < NUM_DT_ENTRIES; i++) {
- u32 dte = rk_domain->dt[i];
-
- if (rk_dte_is_pt_valid(dte)) {
- phys_addr_t pt_phys = rk_dte_pt_address_v2(dte);
- u32 *page_table = phys_to_virt(pt_phys);
-
- dma_unmap_single(dma_dev, pt_phys,
- SPAGE_SIZE, DMA_TO_DEVICE);
- free_page((unsigned long)page_table);
- }
- }
-
- dma_unmap_single(dma_dev, rk_domain->dt_dma,
- SPAGE_SIZE, DMA_TO_DEVICE);
- free_page((unsigned long)rk_domain->dt);
-
- if (domain->type == IOMMU_DOMAIN_DMA)
- iommu_put_dma_cookie(&rk_domain->domain);
- kfree(rk_domain);
-}
-
-static int rk_iommu_add_device(struct device *dev)
-{
- struct iommu_group *group;
- struct rk_iommu *iommu;
struct rk_iommudata *data;
+ struct rk_iommu *iommu;
- data = dev->archdata.iommu;
+ data = dev_iommu_priv_get(dev);
if (!data)
- return -ENODEV;
+ return ERR_PTR(-ENODEV);
iommu = rk_iommu_from_dev(dev);
- group = iommu_group_get_for_dev(dev);
- if (IS_ERR(group))
- return PTR_ERR(group);
- iommu_group_put(group);
-
- iommu_device_link(&iommu->iommu, dev);
data->link = device_link_add(dev, iommu->dev,
DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME);
@@ -1678,26 +1413,18 @@
if (!dev->dma_parms)
dev->dma_parms = kzalloc(sizeof(*dev->dma_parms), GFP_KERNEL);
if (!dev->dma_parms)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
- return 0;
+ return &iommu->iommu;
}
-static void rk_iommu_remove_device(struct device *dev)
+static void rk_iommu_release_device(struct device *dev)
{
- struct rk_iommu *iommu;
- struct rk_iommudata *data = dev->archdata.iommu;
-
- iommu = rk_iommu_from_dev(dev);
-
- kfree(dev->dma_parms);
- dev->dma_parms = NULL;
+ struct rk_iommudata *data = dev_iommu_priv_get(dev);
device_link_del(data->link);
- iommu_device_unlink(&iommu->iommu, dev);
- iommu_group_remove_device(dev);
}
static struct iommu_group *rk_iommu_device_group(struct device *dev)
@@ -1710,9 +1437,9 @@
}
static bool rk_iommu_is_attach_deferred(struct iommu_domain *domain,
- struct device *dev)
+ struct device *dev)
{
- struct rk_iommudata *data = dev->archdata.iommu;
+ struct rk_iommudata *data = dev_iommu_priv_get(dev);
return data->defer_attach;
}
@@ -1734,14 +1461,14 @@
if (strstr(dev_name(dev), "vop"))
data->defer_attach = true;
- dev->archdata.iommu = data;
+ dev_iommu_priv_set(dev, data);
platform_device_put(iommu_dev);
return 0;
}
-void rk_iommu_mask_irq(struct device *dev)
+void rockchip_iommu_mask_irq(struct device *dev)
{
struct rk_iommu *iommu = rk_iommu_from_dev(dev);
int i;
@@ -1752,9 +1479,9 @@
for (i = 0; i < iommu->num_mmu; i++)
rk_iommu_write(iommu->bases[i], RK_MMU_INT_MASK, 0);
}
-EXPORT_SYMBOL(rk_iommu_mask_irq);
+EXPORT_SYMBOL(rockchip_iommu_mask_irq);
-void rk_iommu_unmask_irq(struct device *dev)
+void rockchip_iommu_unmask_irq(struct device *dev)
{
struct rk_iommu *iommu = rk_iommu_from_dev(dev);
int i;
@@ -1770,7 +1497,7 @@
rk_iommu_base_command(iommu->bases[i], RK_MMU_CMD_PAGE_FAULT_DONE);
}
}
-EXPORT_SYMBOL(rk_iommu_unmask_irq);
+EXPORT_SYMBOL(rockchip_iommu_unmask_irq);
static const struct iommu_ops rk_iommu_ops = {
.domain_alloc = rk_iommu_domain_alloc,
@@ -1778,11 +1505,10 @@
.attach_dev = rk_iommu_attach_device,
.detach_dev = rk_iommu_detach_device,
.map = rk_iommu_map,
- .map_sg = default_iommu_map_sg,
.unmap = rk_iommu_unmap,
.flush_iotlb_all = rk_iommu_flush_tlb_all,
- .add_device = rk_iommu_add_device,
- .remove_device = rk_iommu_remove_device,
+ .probe_device = rk_iommu_probe_device,
+ .release_device = rk_iommu_release_device,
.iova_to_phys = rk_iommu_iova_to_phys,
.is_attach_deferred = rk_iommu_is_attach_deferred,
.device_group = rk_iommu_device_group,
@@ -1790,68 +1516,33 @@
.of_xlate = rk_iommu_of_xlate,
};
-static const struct iommu_ops rk_iommu_ops_v2 = {
- .domain_alloc = rk_iommu_domain_alloc,
- .domain_free = rk_iommu_domain_free_v2,
- .attach_dev = rk_iommu_attach_device,
- .detach_dev = rk_iommu_detach_device,
- .map = rk_iommu_map_v2,
- .unmap = rk_iommu_unmap_v2,
- .map_sg = default_iommu_map_sg,
- .flush_iotlb_all = rk_iommu_flush_tlb_all,
- .add_device = rk_iommu_add_device,
- .remove_device = rk_iommu_remove_device,
- .iova_to_phys = rk_iommu_iova_to_phys_v2,
- .is_attach_deferred = rk_iommu_is_attach_deferred,
- .device_group = rk_iommu_device_group,
- .pgsize_bitmap = RK_IOMMU_PGSIZE_BITMAP,
- .of_xlate = rk_iommu_of_xlate,
-};
-
-static const struct rockchip_iommu_data iommu_data_v1 = {
- .version = 0x1,
-};
-
-static const struct rockchip_iommu_data iommu_data_v2 = {
- .version = 0x2,
-};
-
-static const struct of_device_id rk_iommu_dt_ids[] = {
- { .compatible = "rockchip,iommu",
- .data = &iommu_data_v1,
- }, {
- .compatible = "rockchip,iommu-v2",
- .data = &iommu_data_v2,
- },
- { /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, rk_iommu_dt_ids);
-
static int rk_iommu_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct rk_iommu *iommu;
struct resource *res;
+ const struct rk_iommu_ops *ops;
int num_res = pdev->num_resources;
- int err, i, irq;
- const struct of_device_id *match;
- struct rockchip_iommu_data *data;
+ int err, i;
iommu = devm_kzalloc(dev, sizeof(*iommu), GFP_KERNEL);
if (!iommu)
return -ENOMEM;
- match = of_match_device(rk_iommu_dt_ids, dev);
- if (!match)
- return -EINVAL;
-
- data = (struct rockchip_iommu_data *)match->data;
- iommu->version = data->version;
- dev_info(dev, "version = %x\n", iommu->version);
-
platform_set_drvdata(pdev, iommu);
iommu->dev = dev;
iommu->num_mmu = 0;
+
+ ops = of_device_get_match_data(dev);
+ if (!rk_ops)
+ rk_ops = ops;
+
+ /*
+ * That should not happen unless different versions of the
+ * hardware block are embedded the same SoC
+ */
+ if (WARN_ON(rk_ops != ops))
+ return -EINVAL;
iommu->bases = devm_kcalloc(dev, num_res, sizeof(*iommu->bases),
GFP_KERNEL);
@@ -1870,6 +1561,10 @@
if (iommu->num_mmu == 0)
return PTR_ERR(iommu->bases[0]);
+ iommu->num_irq = platform_irq_count(pdev);
+ if (iommu->num_irq < 0)
+ return iommu->num_irq;
+
iommu->reset_disabled = device_property_read_bool(dev,
"rockchip,disable-mmu-reset");
iommu->skip_read = device_property_read_bool(dev,
@@ -1884,6 +1579,7 @@
of_machine_is_compatible("rockchip,rv1109"))
iommu->cmd_retry = device_property_read_bool(dev,
"rockchip,enable-cmd-retry");
+
iommu->need_res_map = device_property_read_bool(dev,
"rockchip,reserve-map");
@@ -1914,10 +1610,8 @@
if (err)
goto err_put_group;
- if (iommu->version >= 0x2)
- iommu_device_set_ops(&iommu->iommu, &rk_iommu_ops_v2);
- else
- iommu_device_set_ops(&iommu->iommu, &rk_iommu_ops);
+ iommu_device_set_ops(&iommu->iommu, &rk_iommu_ops);
+
iommu_device_set_fwnode(&iommu->iommu, &dev->of_node->fwnode);
err = iommu_device_register(&iommu->iommu);
@@ -1932,18 +1626,16 @@
if (!dma_dev)
dma_dev = &pdev->dev;
- if (iommu->version >= 0x2)
- bus_set_iommu(&platform_bus_type, &rk_iommu_ops_v2);
- else
- bus_set_iommu(&platform_bus_type, &rk_iommu_ops);
+ bus_set_iommu(&platform_bus_type, &rk_iommu_ops);
pm_runtime_enable(dev);
if (iommu->skip_read)
goto skip_request_irq;
- i = 0;
- while ((irq = platform_get_irq(pdev, i++)) != -ENXIO) {
+ for (i = 0; i < iommu->num_irq; i++) {
+ int irq = platform_get_irq(pdev, i);
+
if (irq < 0)
return irq;
@@ -1958,8 +1650,12 @@
skip_request_irq:
if (!res_page && iommu->need_res_map) {
res_page = __pa_symbol(reserve_range);
+
pr_info("%s,%d, res_page = 0x%pa\n", __func__, __LINE__, &res_page);
}
+
+ dma_set_mask_and_coherent(dev, rk_ops->dma_bit_mask);
+
return 0;
err_remove_sysfs:
iommu_device_sysfs_remove(&iommu->iommu);
@@ -1973,16 +1669,20 @@
static void rk_iommu_shutdown(struct platform_device *pdev)
{
struct rk_iommu *iommu = platform_get_drvdata(pdev);
- int i = 0, irq;
+ int i;
if (iommu->skip_read)
goto skip_free_irq;
- while ((irq = platform_get_irq(pdev, i++)) != -ENXIO)
+ for (i = 0; i < iommu->num_irq; i++) {
+ int irq = platform_get_irq(pdev, i);
+
devm_free_irq(iommu->dev, irq, iommu);
+ }
skip_free_irq:
- pm_runtime_force_suspend(&pdev->dev);
+ if (!iommu->dlr_disable)
+ pm_runtime_force_suspend(&pdev->dev);
}
static int __maybe_unused rk_iommu_suspend(struct device *dev)
@@ -2018,6 +1718,37 @@
pm_runtime_force_resume)
};
+static struct rk_iommu_ops iommu_data_ops_v1 = {
+ .pt_address = &rk_dte_pt_address,
+ .mk_dtentries = &rk_mk_dte,
+ .mk_ptentries = &rk_mk_pte,
+ .dte_addr_phys = &rk_dte_addr_phys,
+ .dma_addr_dte = &rk_dma_addr_dte,
+ .dma_bit_mask = DMA_BIT_MASK(32),
+};
+
+static struct rk_iommu_ops iommu_data_ops_v2 = {
+ .pt_address = &rk_dte_pt_address_v2,
+ .mk_dtentries = &rk_mk_dte_v2,
+ .mk_ptentries = &rk_mk_pte_v2,
+ .dte_addr_phys = &rk_dte_addr_phys_v2,
+ .dma_addr_dte = &rk_dma_addr_dte_v2,
+ .dma_bit_mask = DMA_BIT_MASK(40),
+};
+
+static const struct of_device_id rk_iommu_dt_ids[] = {
+ { .compatible = "rockchip,iommu",
+ .data = &iommu_data_ops_v1,
+ },
+ { .compatible = "rockchip,iommu-v2",
+ .data = &iommu_data_ops_v2,
+ },
+ { .compatible = "rockchip,rk3568-iommu",
+ .data = &iommu_data_ops_v2,
+ },
+ { /* sentinel */ }
+};
+
static struct platform_driver rk_iommu_driver = {
.probe = rk_iommu_probe,
.shutdown = rk_iommu_shutdown,
--
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