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-rw-r--r--arch/x86/include/asm/iosf_mbi.h25
-rw-r--r--arch/x86/kernel/early-quirks.c87
-rw-r--r--arch/x86/platform/intel/iosf_mbi.c19
3 files changed, 90 insertions, 41 deletions
diff --git a/arch/x86/include/asm/iosf_mbi.h b/arch/x86/include/asm/iosf_mbi.h
index 7d87437bd030..3de0489deade 100644
--- a/arch/x86/include/asm/iosf_mbi.h
+++ b/arch/x86/include/asm/iosf_mbi.h
@@ -147,6 +147,18 @@ int iosf_mbi_register_pmic_bus_access_notifier(struct notifier_block *nb);
int iosf_mbi_unregister_pmic_bus_access_notifier(struct notifier_block *nb);
/**
+ * iosf_mbi_unregister_pmic_bus_access_notifier_unlocked - Unregister PMIC bus
+ * notifier, unlocked
+ *
+ * Like iosf_mbi_unregister_pmic_bus_access_notifier(), but for use when the
+ * caller has already called iosf_mbi_punit_acquire() itself.
+ *
+ * @nb: notifier_block to unregister
+ */
+int iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(
+ struct notifier_block *nb);
+
+/**
* iosf_mbi_call_pmic_bus_access_notifier_chain - Call PMIC bus notifier chain
*
* @val: action to pass into listener's notifier_call function
@@ -154,6 +166,11 @@ int iosf_mbi_unregister_pmic_bus_access_notifier(struct notifier_block *nb);
*/
int iosf_mbi_call_pmic_bus_access_notifier_chain(unsigned long val, void *v);
+/**
+ * iosf_mbi_assert_punit_acquired - Assert that the P-Unit has been acquired.
+ */
+void iosf_mbi_assert_punit_acquired(void);
+
#else /* CONFIG_IOSF_MBI is not enabled */
static inline
bool iosf_mbi_available(void)
@@ -197,12 +214,20 @@ int iosf_mbi_unregister_pmic_bus_access_notifier(struct notifier_block *nb)
return 0;
}
+static inline int
+iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(struct notifier_block *nb)
+{
+ return 0;
+}
+
static inline
int iosf_mbi_call_pmic_bus_access_notifier_chain(unsigned long val, void *v)
{
return 0;
}
+static inline void iosf_mbi_assert_punit_acquired(void) {}
+
#endif /* CONFIG_IOSF_MBI */
#endif /* IOSF_MBI_SYMS_H */
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 1e82f787c160..bae0d32e327b 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -243,7 +243,7 @@ static void __init intel_remapping_check(int num, int slot, int func)
#define KB(x) ((x) * 1024UL)
#define MB(x) (KB (KB (x)))
-static size_t __init i830_tseg_size(void)
+static resource_size_t __init i830_tseg_size(void)
{
u8 esmramc = read_pci_config_byte(0, 0, 0, I830_ESMRAMC);
@@ -256,7 +256,7 @@ static size_t __init i830_tseg_size(void)
return KB(512);
}
-static size_t __init i845_tseg_size(void)
+static resource_size_t __init i845_tseg_size(void)
{
u8 esmramc = read_pci_config_byte(0, 0, 0, I845_ESMRAMC);
u8 tseg_size = esmramc & I845_TSEG_SIZE_MASK;
@@ -273,7 +273,7 @@ static size_t __init i845_tseg_size(void)
return 0;
}
-static size_t __init i85x_tseg_size(void)
+static resource_size_t __init i85x_tseg_size(void)
{
u8 esmramc = read_pci_config_byte(0, 0, 0, I85X_ESMRAMC);
@@ -283,12 +283,12 @@ static size_t __init i85x_tseg_size(void)
return MB(1);
}
-static size_t __init i830_mem_size(void)
+static resource_size_t __init i830_mem_size(void)
{
return read_pci_config_byte(0, 0, 0, I830_DRB3) * MB(32);
}
-static size_t __init i85x_mem_size(void)
+static resource_size_t __init i85x_mem_size(void)
{
return read_pci_config_byte(0, 0, 1, I85X_DRB3) * MB(32);
}
@@ -297,36 +297,36 @@ static size_t __init i85x_mem_size(void)
* On 830/845/85x the stolen memory base isn't available in any
* register. We need to calculate it as TOM-TSEG_SIZE-stolen_size.
*/
-static phys_addr_t __init i830_stolen_base(int num, int slot, int func,
- size_t stolen_size)
+static resource_size_t __init i830_stolen_base(int num, int slot, int func,
+ resource_size_t stolen_size)
{
- return (phys_addr_t)i830_mem_size() - i830_tseg_size() - stolen_size;
+ return i830_mem_size() - i830_tseg_size() - stolen_size;
}
-static phys_addr_t __init i845_stolen_base(int num, int slot, int func,
- size_t stolen_size)
+static resource_size_t __init i845_stolen_base(int num, int slot, int func,
+ resource_size_t stolen_size)
{
- return (phys_addr_t)i830_mem_size() - i845_tseg_size() - stolen_size;
+ return i830_mem_size() - i845_tseg_size() - stolen_size;
}
-static phys_addr_t __init i85x_stolen_base(int num, int slot, int func,
- size_t stolen_size)
+static resource_size_t __init i85x_stolen_base(int num, int slot, int func,
+ resource_size_t stolen_size)
{
- return (phys_addr_t)i85x_mem_size() - i85x_tseg_size() - stolen_size;
+ return i85x_mem_size() - i85x_tseg_size() - stolen_size;
}
-static phys_addr_t __init i865_stolen_base(int num, int slot, int func,
- size_t stolen_size)
+static resource_size_t __init i865_stolen_base(int num, int slot, int func,
+ resource_size_t stolen_size)
{
u16 toud = 0;
toud = read_pci_config_16(0, 0, 0, I865_TOUD);
- return (phys_addr_t)(toud << 16) + i845_tseg_size();
+ return toud * KB(64) + i845_tseg_size();
}
-static phys_addr_t __init gen3_stolen_base(int num, int slot, int func,
- size_t stolen_size)
+static resource_size_t __init gen3_stolen_base(int num, int slot, int func,
+ resource_size_t stolen_size)
{
u32 bsm;
@@ -337,10 +337,10 @@ static phys_addr_t __init gen3_stolen_base(int num, int slot, int func,
*/
bsm = read_pci_config(num, slot, func, INTEL_BSM);
- return (phys_addr_t)bsm & INTEL_BSM_MASK;
+ return bsm & INTEL_BSM_MASK;
}
-static size_t __init i830_stolen_size(int num, int slot, int func)
+static resource_size_t __init i830_stolen_size(int num, int slot, int func)
{
u16 gmch_ctrl;
u16 gms;
@@ -361,7 +361,7 @@ static size_t __init i830_stolen_size(int num, int slot, int func)
return 0;
}
-static size_t __init gen3_stolen_size(int num, int slot, int func)
+static resource_size_t __init gen3_stolen_size(int num, int slot, int func)
{
u16 gmch_ctrl;
u16 gms;
@@ -390,7 +390,7 @@ static size_t __init gen3_stolen_size(int num, int slot, int func)
return 0;
}
-static size_t __init gen6_stolen_size(int num, int slot, int func)
+static resource_size_t __init gen6_stolen_size(int num, int slot, int func)
{
u16 gmch_ctrl;
u16 gms;
@@ -398,10 +398,10 @@ static size_t __init gen6_stolen_size(int num, int slot, int func)
gmch_ctrl = read_pci_config_16(num, slot, func, SNB_GMCH_CTRL);
gms = (gmch_ctrl >> SNB_GMCH_GMS_SHIFT) & SNB_GMCH_GMS_MASK;
- return (size_t)gms * MB(32);
+ return gms * MB(32);
}
-static size_t __init gen8_stolen_size(int num, int slot, int func)
+static resource_size_t __init gen8_stolen_size(int num, int slot, int func)
{
u16 gmch_ctrl;
u16 gms;
@@ -409,10 +409,10 @@ static size_t __init gen8_stolen_size(int num, int slot, int func)
gmch_ctrl = read_pci_config_16(num, slot, func, SNB_GMCH_CTRL);
gms = (gmch_ctrl >> BDW_GMCH_GMS_SHIFT) & BDW_GMCH_GMS_MASK;
- return (size_t)gms * MB(32);
+ return gms * MB(32);
}
-static size_t __init chv_stolen_size(int num, int slot, int func)
+static resource_size_t __init chv_stolen_size(int num, int slot, int func)
{
u16 gmch_ctrl;
u16 gms;
@@ -426,14 +426,14 @@ static size_t __init chv_stolen_size(int num, int slot, int func)
* 0x17 to 0x1d: 4MB increments start at 36MB
*/
if (gms < 0x11)
- return (size_t)gms * MB(32);
+ return gms * MB(32);
else if (gms < 0x17)
- return (size_t)(gms - 0x11 + 2) * MB(4);
+ return (gms - 0x11) * MB(4) + MB(8);
else
- return (size_t)(gms - 0x17 + 9) * MB(4);
+ return (gms - 0x17) * MB(4) + MB(36);
}
-static size_t __init gen9_stolen_size(int num, int slot, int func)
+static resource_size_t __init gen9_stolen_size(int num, int slot, int func)
{
u16 gmch_ctrl;
u16 gms;
@@ -444,14 +444,15 @@ static size_t __init gen9_stolen_size(int num, int slot, int func)
/* 0x0 to 0xef: 32MB increments starting at 0MB */
/* 0xf0 to 0xfe: 4MB increments starting at 4MB */
if (gms < 0xf0)
- return (size_t)gms * MB(32);
+ return gms * MB(32);
else
- return (size_t)(gms - 0xf0 + 1) * MB(4);
+ return (gms - 0xf0) * MB(4) + MB(4);
}
struct intel_early_ops {
- size_t (*stolen_size)(int num, int slot, int func);
- phys_addr_t (*stolen_base)(int num, int slot, int func, size_t size);
+ resource_size_t (*stolen_size)(int num, int slot, int func);
+ resource_size_t (*stolen_base)(int num, int slot, int func,
+ resource_size_t size);
};
static const struct intel_early_ops i830_early_ops __initconst = {
@@ -527,16 +528,20 @@ static const struct pci_device_id intel_early_ids[] __initconst = {
INTEL_SKL_IDS(&gen9_early_ops),
INTEL_BXT_IDS(&gen9_early_ops),
INTEL_KBL_IDS(&gen9_early_ops),
+ INTEL_CFL_IDS(&gen9_early_ops),
INTEL_GLK_IDS(&gen9_early_ops),
INTEL_CNL_IDS(&gen9_early_ops),
};
+struct resource intel_graphics_stolen_res __ro_after_init = DEFINE_RES_MEM(0, 0);
+EXPORT_SYMBOL(intel_graphics_stolen_res);
+
static void __init
intel_graphics_stolen(int num, int slot, int func,
const struct intel_early_ops *early_ops)
{
- phys_addr_t base, end;
- size_t size;
+ resource_size_t base, size;
+ resource_size_t end;
size = early_ops->stolen_size(num, slot, func);
base = early_ops->stolen_base(num, slot, func, size);
@@ -545,8 +550,12 @@ intel_graphics_stolen(int num, int slot, int func,
return;
end = base + size - 1;
- printk(KERN_INFO "Reserving Intel graphics memory at %pa-%pa\n",
- &base, &end);
+
+ intel_graphics_stolen_res.start = base;
+ intel_graphics_stolen_res.end = end;
+
+ printk(KERN_INFO "Reserving Intel graphics memory at %pR\n",
+ &intel_graphics_stolen_res);
/* Mark this space as reserved */
e820__range_add(base, size, E820_TYPE_RESERVED);
diff --git a/arch/x86/platform/intel/iosf_mbi.c b/arch/x86/platform/intel/iosf_mbi.c
index a952ac199741..6f37a2137a79 100644
--- a/arch/x86/platform/intel/iosf_mbi.c
+++ b/arch/x86/platform/intel/iosf_mbi.c
@@ -218,14 +218,23 @@ int iosf_mbi_register_pmic_bus_access_notifier(struct notifier_block *nb)
}
EXPORT_SYMBOL(iosf_mbi_register_pmic_bus_access_notifier);
+int iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(
+ struct notifier_block *nb)
+{
+ iosf_mbi_assert_punit_acquired();
+
+ return blocking_notifier_chain_unregister(
+ &iosf_mbi_pmic_bus_access_notifier, nb);
+}
+EXPORT_SYMBOL(iosf_mbi_unregister_pmic_bus_access_notifier_unlocked);
+
int iosf_mbi_unregister_pmic_bus_access_notifier(struct notifier_block *nb)
{
int ret;
/* Wait for the bus to go inactive before unregistering */
mutex_lock(&iosf_mbi_punit_mutex);
- ret = blocking_notifier_chain_unregister(
- &iosf_mbi_pmic_bus_access_notifier, nb);
+ ret = iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(nb);
mutex_unlock(&iosf_mbi_punit_mutex);
return ret;
@@ -239,6 +248,12 @@ int iosf_mbi_call_pmic_bus_access_notifier_chain(unsigned long val, void *v)
}
EXPORT_SYMBOL(iosf_mbi_call_pmic_bus_access_notifier_chain);
+void iosf_mbi_assert_punit_acquired(void)
+{
+ WARN_ON(!mutex_is_locked(&iosf_mbi_punit_mutex));
+}
+EXPORT_SYMBOL(iosf_mbi_assert_punit_acquired);
+
#ifdef CONFIG_IOSF_MBI_DEBUG
static u32 dbg_mdr;
static u32 dbg_mcr;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 01:38:08 +0000