[PATCH 3/3] PCI/ACPI: Remove unnecessary struct hotplug_program_ops from pci-acpi.c
From: Krzysztof Wilczynski
Date: Tue Aug 27 2019 - 05:50:05 EST
Move the ACPI-specific structs hpx_type0, hpx_type1, hpx_type2 and
hpx_type3 to drivers/pci/pci-acpi.c as they are not used anywhere
else. Then remove the struct hotplug_program_ops that has been
shared between drivers/pci/probe.c and drivers/pci/pci-acpi.c
from drivers/pci/pci.h as it is no longer needed.
The struct hotplug_program_ops was introduced in the commit 87fcf12e846a
("PCI/ACPI: Remove the need for 'struct hotplug_params'") and replaced
previously used struct hotplug_params enabling the support for the _HPX
Type 3 Setting Record that has been added in the commit f873c51a155a
("PCI/ACPI: Implement _HPX Type 3 Setting Record").
The new struct allowed for the static functions such program_hpx_type0(),
program_hpx_type1(), etc., from the drivers/pci/probe.c to be called from
the function pci_acpi_program_hp_params() in the drivers/pci/pci-acpi.c.
Currently, a programming of _HPX Type 0 would be as follows:
drivers/pci/probe.c:
program_hpx_type0()
...
pci_configure_device()
hp_ops = {
.program_type0 = program_hpx_type0,
...
}
pci_acpi_program_hp_params(&hp_ops)
drivers/pci/pci-acpi.c:
pci_acpi_program_hp_params(&hp_ops)
acpi_run_hpx(hp_ops)
decode_type0_hpx_record()
hp_ops->program_type0 # program_hpx_type0() called via hp_ops
After the ACPI-specific functions, structs, enums, etc., have been
moved to drivers/pci/pci-acpi.c there will be no need to keep using
the struct hotplug_program_ops as all of the _HPX Type 0, 1, 2 and 3
would be directly accessible.
Signed-off-by: Krzysztof Wilczynski <kw@xxxxxxxxx>
---
drivers/pci/pci-acpi.c | 96 ++++++++++++++++++++++++++++++++----------
drivers/pci/pci.h | 74 +-------------------------------
drivers/pci/probe.c | 9 +---
3 files changed, 77 insertions(+), 102 deletions(-)
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 0bfabb3f9931..c476b9ed009e 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -118,6 +118,15 @@ phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle)
return (phys_addr_t)mcfg_addr;
}
+/* _HPX PCI Setting Record (Type 0) */
+struct hpx_type0 {
+ u32 revision; /* Not present in _HPP */
+ u8 cache_line_size; /* Not applicable to PCI Express */
+ u8 latency_timer; /* Not applicable to PCI Express */
+ u8 enable_serr;
+ u8 enable_perr;
+};
+
static struct hpx_type0 pci_default_type0 = {
.revision = 1,
.cache_line_size = 8,
@@ -126,7 +135,7 @@ static struct hpx_type0 pci_default_type0 = {
.enable_perr = 0,
};
-void program_hpx_type0(struct pci_dev *dev, struct hpx_type0 *hpx)
+static void program_hpx_type0(struct pci_dev *dev, struct hpx_type0 *hpx)
{
u16 pci_cmd, pci_bctl;
@@ -187,7 +196,15 @@ static acpi_status decode_type0_hpx_record(union acpi_object *record,
return AE_OK;
}
-void program_hpx_type1(struct pci_dev *dev, struct hpx_type1 *hpx)
+/* _HPX PCI-X Setting Record (Type 1) */
+struct hpx_type1 {
+ u32 revision;
+ u8 max_mem_read;
+ u8 avg_max_split;
+ u16 tot_max_split;
+};
+
+static void program_hpx_type1(struct pci_dev *dev, struct hpx_type1 *hpx)
{
int pos;
@@ -243,7 +260,28 @@ static bool pcie_root_rcb_set(struct pci_dev *dev)
return false;
}
-void program_hpx_type2(struct pci_dev *dev, struct hpx_type2 *hpx)
+/* _HPX PCI Express Setting Record (Type 2) */
+struct hpx_type2 {
+ u32 revision;
+ u32 unc_err_mask_and;
+ u32 unc_err_mask_or;
+ u32 unc_err_sever_and;
+ u32 unc_err_sever_or;
+ u32 cor_err_mask_and;
+ u32 cor_err_mask_or;
+ u32 adv_err_cap_and;
+ u32 adv_err_cap_or;
+ u16 pci_exp_devctl_and;
+ u16 pci_exp_devctl_or;
+ u16 pci_exp_lnkctl_and;
+ u16 pci_exp_lnkctl_or;
+ u32 sec_unc_err_sever_and;
+ u32 sec_unc_err_sever_or;
+ u32 sec_unc_err_mask_and;
+ u32 sec_unc_err_mask_or;
+};
+
+static void program_hpx_type2(struct pci_dev *dev, struct hpx_type2 *hpx)
{
int pos;
u32 reg32;
@@ -369,6 +407,24 @@ static acpi_status decode_type2_hpx_record(union acpi_object *record,
return AE_OK;
}
+/* _HPX PCI Express Setting Record (Type 3) */
+struct hpx_type3 {
+ u16 device_type;
+ u16 function_type;
+ u16 config_space_location;
+ u16 pci_exp_cap_id;
+ u16 pci_exp_cap_ver;
+ u16 pci_exp_vendor_id;
+ u16 dvsec_id;
+ u16 dvsec_rev;
+ u16 match_offset;
+ u32 match_mask_and;
+ u32 match_value;
+ u16 reg_offset;
+ u32 reg_mask_and;
+ u32 reg_mask_or;
+};
+
enum hpx_type3_dev_type {
HPX_TYPE_ENDPOINT = BIT(0),
HPX_TYPE_LEG_END = BIT(1),
@@ -498,7 +554,7 @@ static void program_hpx_type3_register(struct pci_dev *dev,
pos, orig_value, write_reg);
}
-void program_hpx_type3(struct pci_dev *dev, struct hpx_type3 *hpx)
+static void program_hpx_type3(struct pci_dev *dev, struct hpx_type3 *hpx)
{
if (!hpx)
return;
@@ -529,8 +585,7 @@ static void parse_hpx3_register(struct hpx_type3 *hpx3_reg,
}
static acpi_status program_type3_hpx_record(struct pci_dev *dev,
- union acpi_object *record,
- const struct hotplug_program_ops *hp_ops)
+ union acpi_object *record)
{
union acpi_object *fields = record->package.elements;
u32 desc_count, expected_length, revision;
@@ -554,7 +609,7 @@ static acpi_status program_type3_hpx_record(struct pci_dev *dev,
for (i = 0; i < desc_count; i++) {
reg_fields = fields + 3 + i * 14;
parse_hpx3_register(&hpx3, reg_fields);
- hp_ops->program_type3(dev, &hpx3);
+ program_hpx_type3(dev, &hpx3);
}
break;
@@ -567,8 +622,7 @@ static acpi_status program_type3_hpx_record(struct pci_dev *dev,
return AE_OK;
}
-static acpi_status acpi_run_hpx(struct pci_dev *dev, acpi_handle handle,
- const struct hotplug_program_ops *hp_ops)
+static acpi_status acpi_run_hpx(struct pci_dev *dev, acpi_handle handle)
{
acpi_status status;
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
@@ -610,24 +664,24 @@ static acpi_status acpi_run_hpx(struct pci_dev *dev, acpi_handle handle,
status = decode_type0_hpx_record(record, &hpx0);
if (ACPI_FAILURE(status))
goto exit;
- hp_ops->program_type0(dev, &hpx0);
+ program_hpx_type0(dev, &hpx0);
break;
case 1:
memset(&hpx1, 0, sizeof(hpx1));
status = decode_type1_hpx_record(record, &hpx1);
if (ACPI_FAILURE(status))
goto exit;
- hp_ops->program_type1(dev, &hpx1);
+ program_hpx_type1(dev, &hpx1);
break;
case 2:
memset(&hpx2, 0, sizeof(hpx2));
status = decode_type2_hpx_record(record, &hpx2);
if (ACPI_FAILURE(status))
goto exit;
- hp_ops->program_type2(dev, &hpx2);
+ program_hpx_type2(dev, &hpx2);
break;
case 3:
- status = program_type3_hpx_record(dev, record, hp_ops);
+ status = program_type3_hpx_record(dev, record);
if (ACPI_FAILURE(status))
goto exit;
break;
@@ -643,8 +697,7 @@ static acpi_status acpi_run_hpx(struct pci_dev *dev, acpi_handle handle,
return status;
}
-static acpi_status acpi_run_hpp(struct pci_dev *dev, acpi_handle handle,
- const struct hotplug_program_ops *hp_ops)
+static acpi_status acpi_run_hpp(struct pci_dev *dev, acpi_handle handle)
{
acpi_status status;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
@@ -679,20 +732,18 @@ static acpi_status acpi_run_hpp(struct pci_dev *dev, acpi_handle handle,
hpx0.enable_serr = fields[2].integer.value;
hpx0.enable_perr = fields[3].integer.value;
- hp_ops->program_type0(dev, &hpx0);
+ program_hpx_type0(dev, &hpx0);
exit:
kfree(buffer.pointer);
return status;
}
-/* pci_get_hp_params
+/* pci_acpi_program_hp_params
*
* @dev - the pci_dev for which we want parameters
- * @hpp - allocated by the caller
*/
-int pci_acpi_program_hp_params(struct pci_dev *dev,
- const struct hotplug_program_ops *hp_ops)
+int pci_acpi_program_hp_params(struct pci_dev *dev)
{
acpi_status status;
acpi_handle handle, phandle;
@@ -715,10 +766,10 @@ int pci_acpi_program_hp_params(struct pci_dev *dev,
* this pci dev.
*/
while (handle) {
- status = acpi_run_hpx(dev, handle, hp_ops);
+ status = acpi_run_hpx(dev, handle);
if (ACPI_SUCCESS(status))
return 0;
- status = acpi_run_hpp(dev, handle, hp_ops);
+ status = acpi_run_hpp(dev, handle);
if (ACPI_SUCCESS(status))
return 0;
if (acpi_is_root_bridge(handle))
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -649,80 +649,10 @@ static inline void pci_aer_clear_fatal_status(struct pci_dev *dev) { }
static inline void pci_aer_clear_device_status(struct pci_dev *dev) { }
#endif
-/* _HPX PCI Setting Record (Type 0) */
-struct hpx_type0 {
- u32 revision; /* Not present in _HPP */
- u8 cache_line_size; /* Not applicable to PCI Express */
- u8 latency_timer; /* Not applicable to PCI Express */
- u8 enable_serr;
- u8 enable_perr;
-};
-
-/* _HPX PCI-X Setting Record (Type 1) */
-struct hpx_type1 {
- u32 revision;
- u8 max_mem_read;
- u8 avg_max_split;
- u16 tot_max_split;
-};
-
-/* _HPX PCI Express Setting Record (Type 2) */
-struct hpx_type2 {
- u32 revision;
- u32 unc_err_mask_and;
- u32 unc_err_mask_or;
- u32 unc_err_sever_and;
- u32 unc_err_sever_or;
- u32 cor_err_mask_and;
- u32 cor_err_mask_or;
- u32 adv_err_cap_and;
- u32 adv_err_cap_or;
- u16 pci_exp_devctl_and;
- u16 pci_exp_devctl_or;
- u16 pci_exp_lnkctl_and;
- u16 pci_exp_lnkctl_or;
- u32 sec_unc_err_sever_and;
- u32 sec_unc_err_sever_or;
- u32 sec_unc_err_mask_and;
- u32 sec_unc_err_mask_or;
-};
-
-/* _HPX PCI Express Setting Record (Type 3) */
-struct hpx_type3 {
- u16 device_type;
- u16 function_type;
- u16 config_space_location;
- u16 pci_exp_cap_id;
- u16 pci_exp_cap_ver;
- u16 pci_exp_vendor_id;
- u16 dvsec_id;
- u16 dvsec_rev;
- u16 match_offset;
- u32 match_mask_and;
- u32 match_value;
- u16 reg_offset;
- u32 reg_mask_and;
- u32 reg_mask_or;
-};
-
-void program_hpx_type0(struct pci_dev *dev, struct hpx_type0 *hpx);
-void program_hpx_type1(struct pci_dev *dev, struct hpx_type1 *hpx);
-void program_hpx_type2(struct pci_dev *dev, struct hpx_type2 *hpx);
-void program_hpx_type3(struct pci_dev *dev, struct hpx_type3 *hpx);
-
-struct hotplug_program_ops {
- void (*program_type0)(struct pci_dev *dev, struct hpx_type0 *hpx);
- void (*program_type1)(struct pci_dev *dev, struct hpx_type1 *hpx);
- void (*program_type2)(struct pci_dev *dev, struct hpx_type2 *hpx);
- void (*program_type3)(struct pci_dev *dev, struct hpx_type3 *hpx);
-};
-
#ifdef CONFIG_ACPI
-int pci_acpi_program_hp_params(struct pci_dev *dev,
- const struct hotplug_program_ops *hp_ops);
+int pci_acpi_program_hp_params(struct pci_dev *dev);
#else
-static inline int pci_acpi_program_hp_params(struct pci_dev *dev,
- const struct hotplug_program_ops *hp_ops)
+static inline int pci_acpi_program_hp_params(struct pci_dev *dev)
{
return -ENODEV;
}
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2095,13 +2095,6 @@ static void pci_configure_serr(struct pci_dev *dev)
static void pci_configure_device(struct pci_dev *dev)
{
- static const struct hotplug_program_ops hp_ops = {
- .program_type0 = program_hpx_type0,
- .program_type1 = program_hpx_type1,
- .program_type2 = program_hpx_type2,
- .program_type3 = program_hpx_type3,
- };
-
pci_configure_mps(dev);
pci_configure_extended_tags(dev, NULL);
pci_configure_relaxed_ordering(dev);
@@ -2109,7 +2102,7 @@ static void pci_configure_device(struct pci_dev *dev)
pci_configure_eetlp_prefix(dev);
pci_configure_serr(dev);
- pci_acpi_program_hp_params(dev, &hp_ops);
+ pci_acpi_program_hp_params(dev);
}
static void pci_release_capabilities(struct pci_dev *dev)
--
2.22.1