diff options
Diffstat (limited to 'drivers/peci/request.c')
| -rw-r--r-- | drivers/peci/request.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/drivers/peci/request.c b/drivers/peci/request.c index a49eb351cda3..8d6dd7b6b559 100644 --- a/drivers/peci/request.c +++ b/drivers/peci/request.c @@ -3,6 +3,7 @@ #include <linux/bug.h> #include <linux/export.h> +#include <linux/pci.h> #include <linux/peci.h> #include <linux/slab.h> #include <linux/types.h> @@ -15,6 +16,10 @@ #define PECI_GET_DIB_WR_LEN 1 #define PECI_GET_DIB_RD_LEN 8 +#define PECI_GET_TEMP_CMD 0x01 +#define PECI_GET_TEMP_WR_LEN 1 +#define PECI_GET_TEMP_RD_LEN 2 + #define PECI_RDPKGCFG_CMD 0xa1 #define PECI_RDPKGCFG_WR_LEN 5 #define PECI_RDPKGCFG_RD_LEN_BASE 1 @@ -22,6 +27,45 @@ #define PECI_WRPKGCFG_WR_LEN_BASE 6 #define PECI_WRPKGCFG_RD_LEN 1 +#define PECI_RDIAMSR_CMD 0xb1 +#define PECI_RDIAMSR_WR_LEN 5 +#define PECI_RDIAMSR_RD_LEN 9 +#define PECI_WRIAMSR_CMD 0xb5 +#define PECI_RDIAMSREX_CMD 0xd1 +#define PECI_RDIAMSREX_WR_LEN 6 +#define PECI_RDIAMSREX_RD_LEN 9 + +#define PECI_RDPCICFG_CMD 0x61 +#define PECI_RDPCICFG_WR_LEN 6 +#define PECI_RDPCICFG_RD_LEN 5 +#define PECI_RDPCICFG_RD_LEN_MAX 24 +#define PECI_WRPCICFG_CMD 0x65 + +#define PECI_RDPCICFGLOCAL_CMD 0xe1 +#define PECI_RDPCICFGLOCAL_WR_LEN 5 +#define PECI_RDPCICFGLOCAL_RD_LEN_BASE 1 +#define PECI_WRPCICFGLOCAL_CMD 0xe5 +#define PECI_WRPCICFGLOCAL_WR_LEN_BASE 6 +#define PECI_WRPCICFGLOCAL_RD_LEN 1 + +#define PECI_ENDPTCFG_TYPE_LOCAL_PCI 0x03 +#define PECI_ENDPTCFG_TYPE_PCI 0x04 +#define PECI_ENDPTCFG_TYPE_MMIO 0x05 +#define PECI_ENDPTCFG_ADDR_TYPE_PCI 0x04 +#define PECI_ENDPTCFG_ADDR_TYPE_MMIO_D 0x05 +#define PECI_ENDPTCFG_ADDR_TYPE_MMIO_Q 0x06 +#define PECI_RDENDPTCFG_CMD 0xc1 +#define PECI_RDENDPTCFG_PCI_WR_LEN 12 +#define PECI_RDENDPTCFG_MMIO_WR_LEN_BASE 10 +#define PECI_RDENDPTCFG_MMIO_D_WR_LEN 14 +#define PECI_RDENDPTCFG_MMIO_Q_WR_LEN 18 +#define PECI_RDENDPTCFG_RD_LEN_BASE 1 +#define PECI_WRENDPTCFG_CMD 0xc5 +#define PECI_WRENDPTCFG_PCI_WR_LEN_BASE 13 +#define PECI_WRENDPTCFG_MMIO_D_WR_LEN_BASE 15 +#define PECI_WRENDPTCFG_MMIO_Q_WR_LEN_BASE 19 +#define PECI_WRENDPTCFG_RD_LEN 1 + /* Device Specific Completion Code (CC) Definition */ #define PECI_CC_SUCCESS 0x40 #define PECI_CC_NEED_RETRY 0x80 @@ -202,6 +246,27 @@ struct peci_request *peci_xfer_get_dib(struct peci_device *device) } EXPORT_SYMBOL_NS_GPL(peci_xfer_get_dib, PECI); +struct peci_request *peci_xfer_get_temp(struct peci_device *device) +{ + struct peci_request *req; + int ret; + + req = peci_request_alloc(device, PECI_GET_TEMP_WR_LEN, PECI_GET_TEMP_RD_LEN); + if (!req) + return ERR_PTR(-ENOMEM); + + req->tx.buf[0] = PECI_GET_TEMP_CMD; + + ret = peci_request_xfer(req); + if (ret) { + peci_request_free(req); + return ERR_PTR(ret); + } + + return req; +} +EXPORT_SYMBOL_NS_GPL(peci_xfer_get_temp, PECI); + static struct peci_request * __pkg_cfg_read(struct peci_device *device, u8 index, u16 param, u8 len) { @@ -226,6 +291,108 @@ __pkg_cfg_read(struct peci_device *device, u8 index, u16 param, u8 len) return req; } +static u32 __get_pci_addr(u8 bus, u8 dev, u8 func, u16 reg) +{ + return reg | PCI_DEVID(bus, PCI_DEVFN(dev, func)) << 12; +} + +static struct peci_request * +__pci_cfg_local_read(struct peci_device *device, u8 bus, u8 dev, u8 func, u16 reg, u8 len) +{ + struct peci_request *req; + u32 pci_addr; + int ret; + + req = peci_request_alloc(device, PECI_RDPCICFGLOCAL_WR_LEN, + PECI_RDPCICFGLOCAL_RD_LEN_BASE + len); + if (!req) + return ERR_PTR(-ENOMEM); + + pci_addr = __get_pci_addr(bus, dev, func, reg); + + req->tx.buf[0] = PECI_RDPCICFGLOCAL_CMD; + req->tx.buf[1] = 0; + put_unaligned_le24(pci_addr, &req->tx.buf[2]); + + ret = peci_request_xfer_retry(req); + if (ret) { + peci_request_free(req); + return ERR_PTR(ret); + } + + return req; +} + +static struct peci_request * +__ep_pci_cfg_read(struct peci_device *device, u8 msg_type, u8 seg, + u8 bus, u8 dev, u8 func, u16 reg, u8 len) +{ + struct peci_request *req; + u32 pci_addr; + int ret; + + req = peci_request_alloc(device, PECI_RDENDPTCFG_PCI_WR_LEN, + PECI_RDENDPTCFG_RD_LEN_BASE + len); + if (!req) + return ERR_PTR(-ENOMEM); + + pci_addr = __get_pci_addr(bus, dev, func, reg); + + req->tx.buf[0] = PECI_RDENDPTCFG_CMD; + req->tx.buf[1] = 0; + req->tx.buf[2] = msg_type; + req->tx.buf[3] = 0; + req->tx.buf[4] = 0; + req->tx.buf[5] = 0; + req->tx.buf[6] = PECI_ENDPTCFG_ADDR_TYPE_PCI; + req->tx.buf[7] = seg; /* PCI Segment */ + put_unaligned_le32(pci_addr, &req->tx.buf[8]); + + ret = peci_request_xfer_retry(req); + if (ret) { + peci_request_free(req); + return ERR_PTR(ret); + } + + return req; +} + +static struct peci_request * +__ep_mmio_read(struct peci_device *device, u8 bar, u8 addr_type, u8 seg, + u8 bus, u8 dev, u8 func, u64 offset, u8 tx_len, u8 len) +{ + struct peci_request *req; + int ret; + + req = peci_request_alloc(device, tx_len, PECI_RDENDPTCFG_RD_LEN_BASE + len); + if (!req) + return ERR_PTR(-ENOMEM); + + req->tx.buf[0] = PECI_RDENDPTCFG_CMD; + req->tx.buf[1] = 0; + req->tx.buf[2] = PECI_ENDPTCFG_TYPE_MMIO; + req->tx.buf[3] = 0; /* Endpoint ID */ + req->tx.buf[4] = 0; /* Reserved */ + req->tx.buf[5] = bar; + req->tx.buf[6] = addr_type; + req->tx.buf[7] = seg; /* PCI Segment */ + req->tx.buf[8] = PCI_DEVFN(dev, func); + req->tx.buf[9] = bus; /* PCI Bus */ + + if (addr_type == PECI_ENDPTCFG_ADDR_TYPE_MMIO_D) + put_unaligned_le32(offset, &req->tx.buf[10]); + else + put_unaligned_le64(offset, &req->tx.buf[10]); + + ret = peci_request_xfer_retry(req); + if (ret) { + peci_request_free(req); + return ERR_PTR(ret); + } + + return req; +} + u8 peci_request_data_readb(struct peci_request *req) { return req->rx.buf[1]; @@ -256,6 +423,12 @@ u64 peci_request_dib_read(struct peci_request *req) } EXPORT_SYMBOL_NS_GPL(peci_request_dib_read, PECI); +s16 peci_request_temp_read(struct peci_request *req) +{ + return get_unaligned_le16(&req->rx.buf[0]); +} +EXPORT_SYMBOL_NS_GPL(peci_request_temp_read, PECI); + #define __read_pkg_config(x, type) \ struct peci_request *peci_xfer_pkg_cfg_##x(struct peci_device *device, u8 index, u16 param) \ { \ @@ -267,3 +440,43 @@ __read_pkg_config(readb, u8); __read_pkg_config(readw, u16); __read_pkg_config(readl, u32); __read_pkg_config(readq, u64); + +#define __read_pci_config_local(x, type) \ +struct peci_request * \ +peci_xfer_pci_cfg_local_##x(struct peci_device *device, u8 bus, u8 dev, u8 func, u16 reg) \ +{ \ + return __pci_cfg_local_read(device, bus, dev, func, reg, sizeof(type)); \ +} \ +EXPORT_SYMBOL_NS_GPL(peci_xfer_pci_cfg_local_##x, PECI) + +__read_pci_config_local(readb, u8); +__read_pci_config_local(readw, u16); +__read_pci_config_local(readl, u32); + +#define __read_ep_pci_config(x, msg_type, type) \ +struct peci_request * \ +peci_xfer_ep_pci_cfg_##x(struct peci_device *device, u8 seg, u8 bus, u8 dev, u8 func, u16 reg) \ +{ \ + return __ep_pci_cfg_read(device, msg_type, seg, bus, dev, func, reg, sizeof(type)); \ +} \ +EXPORT_SYMBOL_NS_GPL(peci_xfer_ep_pci_cfg_##x, PECI) + +__read_ep_pci_config(local_readb, PECI_ENDPTCFG_TYPE_LOCAL_PCI, u8); +__read_ep_pci_config(local_readw, PECI_ENDPTCFG_TYPE_LOCAL_PCI, u16); +__read_ep_pci_config(local_readl, PECI_ENDPTCFG_TYPE_LOCAL_PCI, u32); +__read_ep_pci_config(readb, PECI_ENDPTCFG_TYPE_PCI, u8); +__read_ep_pci_config(readw, PECI_ENDPTCFG_TYPE_PCI, u16); +__read_ep_pci_config(readl, PECI_ENDPTCFG_TYPE_PCI, u32); + +#define __read_ep_mmio(x, y, addr_type, type1, type2) \ +struct peci_request *peci_xfer_ep_mmio##y##_##x(struct peci_device *device, u8 bar, u8 seg, \ + u8 bus, u8 dev, u8 func, u64 offset) \ +{ \ + return __ep_mmio_read(device, bar, addr_type, seg, bus, dev, func, \ + offset, PECI_RDENDPTCFG_MMIO_WR_LEN_BASE + sizeof(type1), \ + sizeof(type2)); \ +} \ +EXPORT_SYMBOL_NS_GPL(peci_xfer_ep_mmio##y##_##x, PECI) + +__read_ep_mmio(readl, 32, PECI_ENDPTCFG_ADDR_TYPE_MMIO_D, u32, u32); +__read_ep_mmio(readl, 64, PECI_ENDPTCFG_ADDR_TYPE_MMIO_Q, u64, u32); |