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-rw-r--r--drivers/gpu/drm/radeon/radeon.h15
-rw-r--r--drivers/gpu/drm/radeon/radeon_atpx_handler.c56
-rw-r--r--drivers/gpu/drm/radeon/radeon_bios.c80
3 files changed, 77 insertions, 74 deletions
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 99304194a65c..59a15315ae9f 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -142,21 +142,6 @@ struct radeon_device;
142/* 142/*
143 * BIOS. 143 * BIOS.
144 */ 144 */
145#define ATRM_BIOS_PAGE 4096
146
147#if defined(CONFIG_VGA_SWITCHEROO)
148bool radeon_atrm_supported(struct pci_dev *pdev);
149int radeon_atrm_get_bios_chunk(uint8_t *bios, int offset, int len);
150#else
151static inline bool radeon_atrm_supported(struct pci_dev *pdev)
152{
153 return false;
154}
155
156static inline int radeon_atrm_get_bios_chunk(uint8_t *bios, int offset, int len){
157 return -EINVAL;
158}
159#endif
160bool radeon_get_bios(struct radeon_device *rdev); 145bool radeon_get_bios(struct radeon_device *rdev);
161 146
162/* 147/*
diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
index 98724fcb0088..2a2cf0b88a28 100644
--- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c
+++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
@@ -30,57 +30,8 @@ static struct radeon_atpx_priv {
30 /* handle for device - and atpx */ 30 /* handle for device - and atpx */
31 acpi_handle dhandle; 31 acpi_handle dhandle;
32 acpi_handle atpx_handle; 32 acpi_handle atpx_handle;
33 acpi_handle atrm_handle;
34} radeon_atpx_priv; 33} radeon_atpx_priv;
35 34
36/* retrieve the ROM in 4k blocks */
37static int radeon_atrm_call(acpi_handle atrm_handle, uint8_t *bios,
38 int offset, int len)
39{
40 acpi_status status;
41 union acpi_object atrm_arg_elements[2], *obj;
42 struct acpi_object_list atrm_arg;
43 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
44
45 atrm_arg.count = 2;
46 atrm_arg.pointer = &atrm_arg_elements[0];
47
48 atrm_arg_elements[0].type = ACPI_TYPE_INTEGER;
49 atrm_arg_elements[0].integer.value = offset;
50
51 atrm_arg_elements[1].type = ACPI_TYPE_INTEGER;
52 atrm_arg_elements[1].integer.value = len;
53
54 status = acpi_evaluate_object(atrm_handle, NULL, &atrm_arg, &buffer);
55 if (ACPI_FAILURE(status)) {
56 printk("failed to evaluate ATRM got %s\n", acpi_format_exception(status));
57 return -ENODEV;
58 }
59
60 obj = (union acpi_object *)buffer.pointer;
61 memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length);
62 len = obj->buffer.length;
63 kfree(buffer.pointer);
64 return len;
65}
66
67bool radeon_atrm_supported(struct pci_dev *pdev)
68{
69 /* get the discrete ROM only via ATRM */
70 if (!radeon_atpx_priv.atpx_detected)
71 return false;
72
73 if (radeon_atpx_priv.dhandle == DEVICE_ACPI_HANDLE(&pdev->dev))
74 return false;
75 return true;
76}
77
78
79int radeon_atrm_get_bios_chunk(uint8_t *bios, int offset, int len)
80{
81 return radeon_atrm_call(radeon_atpx_priv.atrm_handle, bios, offset, len);
82}
83
84static int radeon_atpx_get_version(acpi_handle handle) 35static int radeon_atpx_get_version(acpi_handle handle)
85{ 36{
86 acpi_status status; 37 acpi_status status;
@@ -198,7 +149,7 @@ static int radeon_atpx_power_state(enum vga_switcheroo_client_id id,
198 149
199static bool radeon_atpx_pci_probe_handle(struct pci_dev *pdev) 150static bool radeon_atpx_pci_probe_handle(struct pci_dev *pdev)
200{ 151{
201 acpi_handle dhandle, atpx_handle, atrm_handle; 152 acpi_handle dhandle, atpx_handle;
202 acpi_status status; 153 acpi_status status;
203 154
204 dhandle = DEVICE_ACPI_HANDLE(&pdev->dev); 155 dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
@@ -209,13 +160,8 @@ static bool radeon_atpx_pci_probe_handle(struct pci_dev *pdev)
209 if (ACPI_FAILURE(status)) 160 if (ACPI_FAILURE(status))
210 return false; 161 return false;
211 162
212 status = acpi_get_handle(dhandle, "ATRM", &atrm_handle);
213 if (ACPI_FAILURE(status))
214 return false;
215
216 radeon_atpx_priv.dhandle = dhandle; 163 radeon_atpx_priv.dhandle = dhandle;
217 radeon_atpx_priv.atpx_handle = atpx_handle; 164 radeon_atpx_priv.atpx_handle = atpx_handle;
218 radeon_atpx_priv.atrm_handle = atrm_handle;
219 return true; 165 return true;
220} 166}
221 167
diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index ab0b2f7292ae..d306cc8fdeaa 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -99,16 +99,81 @@ static bool radeon_read_bios(struct radeon_device *rdev)
99 return true; 99 return true;
100} 100}
101 101
102#ifdef CONFIG_ACPI
102/* ATRM is used to get the BIOS on the discrete cards in 103/* ATRM is used to get the BIOS on the discrete cards in
103 * dual-gpu systems. 104 * dual-gpu systems.
104 */ 105 */
106/* retrieve the ROM in 4k blocks */
107#define ATRM_BIOS_PAGE 4096
108/**
109 * radeon_atrm_call - fetch a chunk of the vbios
110 *
111 * @atrm_handle: acpi ATRM handle
112 * @bios: vbios image pointer
113 * @offset: offset of vbios image data to fetch
114 * @len: length of vbios image data to fetch
115 *
116 * Executes ATRM to fetch a chunk of the discrete
117 * vbios image on PX systems (all asics).
118 * Returns the length of the buffer fetched.
119 */
120static int radeon_atrm_call(acpi_handle atrm_handle, uint8_t *bios,
121 int offset, int len)
122{
123 acpi_status status;
124 union acpi_object atrm_arg_elements[2], *obj;
125 struct acpi_object_list atrm_arg;
126 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
127
128 atrm_arg.count = 2;
129 atrm_arg.pointer = &atrm_arg_elements[0];
130
131 atrm_arg_elements[0].type = ACPI_TYPE_INTEGER;
132 atrm_arg_elements[0].integer.value = offset;
133
134 atrm_arg_elements[1].type = ACPI_TYPE_INTEGER;
135 atrm_arg_elements[1].integer.value = len;
136
137 status = acpi_evaluate_object(atrm_handle, NULL, &atrm_arg, &buffer);
138 if (ACPI_FAILURE(status)) {
139 printk("failed to evaluate ATRM got %s\n", acpi_format_exception(status));
140 return -ENODEV;
141 }
142
143 obj = (union acpi_object *)buffer.pointer;
144 memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length);
145 len = obj->buffer.length;
146 kfree(buffer.pointer);
147 return len;
148}
149
105static bool radeon_atrm_get_bios(struct radeon_device *rdev) 150static bool radeon_atrm_get_bios(struct radeon_device *rdev)
106{ 151{
107 int ret; 152 int ret;
108 int size = 256 * 1024; 153 int size = 256 * 1024;
109 int i; 154 int i;
155 struct pci_dev *pdev = NULL;
156 acpi_handle dhandle, atrm_handle;
157 acpi_status status;
158 bool found = false;
110 159
111 if (!radeon_atrm_supported(rdev->pdev)) 160 /* ATRM is for the discrete card only */
161 if (rdev->flags & RADEON_IS_IGP)
162 return false;
163
164 while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
165 dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
166 if (!dhandle)
167 continue;
168
169 status = acpi_get_handle(dhandle, "ATRM", &atrm_handle);
170 if (!ACPI_FAILURE(status)) {
171 found = true;
172 break;
173 }
174 }
175
176 if (!found)
112 return false; 177 return false;
113 178
114 rdev->bios = kmalloc(size, GFP_KERNEL); 179 rdev->bios = kmalloc(size, GFP_KERNEL);
@@ -118,9 +183,10 @@ static bool radeon_atrm_get_bios(struct radeon_device *rdev)
118 } 183 }
119 184
120 for (i = 0; i < size / ATRM_BIOS_PAGE; i++) { 185 for (i = 0; i < size / ATRM_BIOS_PAGE; i++) {
121 ret = radeon_atrm_get_bios_chunk(rdev->bios, 186 ret = radeon_atrm_call(atrm_handle,
122 (i * ATRM_BIOS_PAGE), 187 rdev->bios,
123 ATRM_BIOS_PAGE); 188 (i * ATRM_BIOS_PAGE),
189 ATRM_BIOS_PAGE);
124 if (ret < ATRM_BIOS_PAGE) 190 if (ret < ATRM_BIOS_PAGE)
125 break; 191 break;
126 } 192 }
@@ -131,6 +197,12 @@ static bool radeon_atrm_get_bios(struct radeon_device *rdev)
131 } 197 }
132 return true; 198 return true;
133} 199}
200#else
201static inline bool radeon_atrm_get_bios(struct radeon_device *rdev)
202{
203 return false;
204}
205#endif
134 206
135static bool ni_read_disabled_bios(struct radeon_device *rdev) 207static bool ni_read_disabled_bios(struct radeon_device *rdev)
136{ 208{