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Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 platform updates from Ingo Molnar:
 "Most of the commits are continued SGI UV4 hardware-enablement changes,
  plus there's also new Bluetooth support for the Intel Edison platform"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/platform/intel-mid: Enable Bluetooth support on Intel Edison
  x86/platform/uv/BAU: Implement uv4_wait_completion with read_status
  x86/platform/uv/BAU: Add wait_completion to bau_operations
  x86/platform/uv/BAU: Add status mmr location fields to bau_control
  x86/platform/uv/BAU: Cleanup bau_operations declaration and instances
  x86/platform/uv/BAU: Add payload descriptor qualifier
  x86/platform/uv/BAU: Add uv_bau_version enumerated constants
This commit is contained in:
Linus Torvalds
2017-05-01 23:05:12 -07:00
parent 888411be09 d4d969909b
commit d19458a4ea
4 changed files with 299 additions and 89 deletions
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82
arch/x86/include/asm/uv/uv_bau.h
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@@ -185,6 +185,15 @@
#define MSG_REGULAR 1
#define MSG_RETRY 2
#define BAU_DESC_QUALIFIER 0x534749
enum uv_bau_version {
UV_BAU_V1 = 1,
UV_BAU_V2,
UV_BAU_V3,
UV_BAU_V4,
};
/*
* Distribution: 32 bytes (256 bits) (bytes 0-0x1f of descriptor)
* If the 'multilevel' flag in the header portion of the descriptor
@@ -222,20 +231,32 @@ struct bau_local_cpumask {
* the s/w ack bit vector ]
*/
/*
* The payload is software-defined for INTD transactions
/**
* struct uv1_2_3_bau_msg_payload - defines payload for INTD transactions
* @address: Signifies a page or all TLB's of the cpu
* @sending_cpu: CPU from which the message originates
* @acknowledge_count: CPUs on the destination Hub that received the interrupt
*/
struct bau_msg_payload {
unsigned long address; /* signifies a page or all
TLB's of the cpu */
/* 64 bits */
unsigned short sending_cpu; /* filled in by sender */
/* 16 bits */
unsigned short acknowledge_count; /* filled in by destination */
/* 16 bits */
unsigned int reserved1:32; /* not usable */
struct uv1_2_3_bau_msg_payload {
u64 address;
u16 sending_cpu;
u16 acknowledge_count;
};
/**
* struct uv4_bau_msg_payload - defines payload for INTD transactions
* @address: Signifies a page or all TLB's of the cpu
* @sending_cpu: CPU from which the message originates
* @acknowledge_count: CPUs on the destination Hub that received the interrupt
* @qualifier: Set by source to verify origin of INTD broadcast
*/
struct uv4_bau_msg_payload {
u64 address;
u16 sending_cpu;
u16 acknowledge_count;
u32 reserved:8;
u32 qualifier:24;
};
/*
* UV1 Message header: 16 bytes (128 bits) (bytes 0x30-0x3f of descriptor)
@@ -385,17 +406,6 @@ struct uv2_3_bau_msg_header {
/* bits 127:120 */
};
/* Abstracted BAU functions */
struct bau_operations {
unsigned long (*read_l_sw_ack)(void);
unsigned long (*read_g_sw_ack)(int pnode);
unsigned long (*bau_gpa_to_offset)(unsigned long vaddr);
void (*write_l_sw_ack)(unsigned long mmr);
void (*write_g_sw_ack)(int pnode, unsigned long mmr);
void (*write_payload_first)(int pnode, unsigned long mmr);
void (*write_payload_last)(int pnode, unsigned long mmr);
};
/*
* The activation descriptor:
* The format of the message to send, plus all accompanying control
@@ -411,7 +421,10 @@ struct bau_desc {
struct uv2_3_bau_msg_header uv2_3_hdr;
} header;
struct bau_msg_payload payload;
union bau_payload_header {
struct uv1_2_3_bau_msg_payload uv1_2_3;
struct uv4_bau_msg_payload uv4;
} payload;
};
/* UV1:
* -payload-- ---------header------
@@ -588,8 +601,12 @@ struct uvhub_desc {
struct socket_desc socket[2];
};
/*
* one per-cpu; to locate the software tables
/**
* struct bau_control
* @status_mmr: location of status mmr, determined by uvhub_cpu
* @status_index: index of ERR|BUSY bits in status mmr, determined by uvhub_cpu
*
* Per-cpu control struct containing CPU topology information and BAU tuneables.
*/
struct bau_control {
struct bau_desc *descriptor_base;
@@ -607,6 +624,8 @@ struct bau_control {
int timeout_tries;
int ipi_attempts;
int conseccompletes;
u64 status_mmr;
int status_index;
bool nobau;
short baudisabled;
short cpu;
@@ -644,6 +663,19 @@ struct bau_control {
struct hub_and_pnode *thp;
};
/* Abstracted BAU functions */
struct bau_operations {
unsigned long (*read_l_sw_ack)(void);
unsigned long (*read_g_sw_ack)(int pnode);
unsigned long (*bau_gpa_to_offset)(unsigned long vaddr);
void (*write_l_sw_ack)(unsigned long mmr);
void (*write_g_sw_ack)(int pnode, unsigned long mmr);
void (*write_payload_first)(int pnode, unsigned long mmr);
void (*write_payload_last)(int pnode, unsigned long mmr);
int (*wait_completion)(struct bau_desc*,
struct bau_control*, long try);
};
static inline void write_mmr_data_broadcast(int pnode, unsigned long mmr_image)
{
write_gmmr(pnode, UVH_BAU_DATA_BROADCAST, mmr_image);